DETAILED ACTION
The office action is in response to the application filed received on March 06, 2026 as RCE.
The RCE application was received on March 06, 2026.
Claims 1-30 are pending in this application.
Information Disclosure Statement
No information disclosure statements (IDSs) has been submitted.
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Response to Arguments
Applicant’s Amendments and Arguments filed 03/06/2026 have been considered for examination. Claims 1-30 are pending in the instant application.
With regard to the 103 rejections, Applicant’s arguments filed 03/06/2026 (see pages 10-17 of Remarks) in view of the amendments have been fully considered but are not persuasive at least in view of the reasons set forth below. Further, Examiner notes that Applicant’s amendments necessitated the new ground(s) of rejection presented in the instant Office Action.
Regarding claims 1, 15, 29, and 30, Applicant argued:
In the argument, Applicant argued Parichehrehteroujeni does not disclose the amended claim 1, recited as “trigger, prior to expiration of a random access timer associated with the random access procedure, a radio link failure mode … greater than the first reference signal received power threshold” (similarly for the amended claims 15, 29 and 30).
Merely triggering CHO based on satisfaction of a high threshold as discussed in Parichehrehteroujeni does not teach or suggest this part of the amended claim 1.
Further, RLF detection in Parichehrehteroujeni is performed after conditional handover (CHO) is triggered and, consequently, RLF itself is not detected in response to satisfaction of the threshold for triggering CHO. RLF detection and RLM as discussed in Parichehrehteroujeni is performed with respect to the serving cell, which does not teach or suggest the part of the claim 1, recited as “a radio link failure mode for the first cell … greater than the first reference signal received power threshold," where the second reference signal received power is "for a second reference signal received from a second cell” as recited in amended independent claim 1.
Parichehrehteroujeni does not teach or suggest "trigger[ing] a radio link failure mode for the first cell prior to expiration of a random access timer," as recited in independent claim 1. Rather, Parichehrehteroujeni discusses detecting OOS conditions prior to starting a timer T310, and subsequently declaring RLF based on expiration of that timer. However, merely detecting OOS conditions does not teach or suggest "trigger a radio link failure mode." Indeed, Parichehrehteroujeni discusses declaring RLF after expiration of the timer T310 or the timer T304, which is not the same as triggering a RLF mode in the amended claim 1.
Further, two thresholds of Parichehrehteroujeni associated different signal quality threshold is taught for the same node, but does not teach the part of the amended claim 1.
In response to Applicant’s argument, Examiner respectfully disagrees.
In the argument, Applicant argued Parichehrehteroujeni does not disclose the part of the amended claim 1 (similarly for the amended claims 15, 29 and 30), recited as “trigger, prior to expiration of a random access timer associated with the random access procedure, a radio link failure mode … greater than the first reference signal received power threshold.” However, Examiner respectfully disagrees.
Regarding the part of the amended claim 1 mentioned in the above, Parichehrehteroujeni teaches that in Paragraph [0101]-[0102], to support mobility (handover or reselection) between cells and/or beams, UE performs periodic cell search and measurement of signal power and quality such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) in both RRC_Connected and RRC_Idle states for the neighbor cells (the first cells: target cells) detected and the serving cell (the second cell), using various downlink reference signals (RS) such as CRS (Cell-Specific RS), MB SFN RS, UE specific Demodulation RS (DMRS) of PDSCH, DMRS for EPDCCH or M/NPDCCH, Positioning RS (PRS), and Channel State Information RS (CSI-RS). UE reports the detected neighbor cells and the associated measurement report to the network. The measurement reports of UE are configured to be periodic or aperiodic based on a particular event such as A3 event, A5 event, etc. Further, as described in Fig. 6A and 6B and in Paragraphs [0157]-[0158], in CHO (Conditional HandOver), the handover command is sent earlier to UE on the good radio condition and when the handover condition is met, the CHO is executed. The condition is determined based on the thresholds regarding the above event measurements (RSRP or RSRQ). Namely, the condition is met when for A3 event, the signal strength (RSRP) of the candidate target cell (the neighbor cell: the first cell) becomes X dBm better than the serving cell (the second cell) or when for A5 event, the signal strength (RSRP) of candidate target cell becomes better than Y dBm. Rather, in described in Paragraph [0167], when the UE is configured with multiple CHO command and each is associated to different target cell candidates. The condition associated with a first target cell (the first cell) is fulfilled and the UE applies a stored CHO target configuration (i.e. a stored RRCReconfiguration), starts timer T304, and attempts to perform random access towards that first candidate target cell (the first cell) while timer T304 is running. However, the UE fails to perform the random access (resulted in RLF (Radio link failure) as described in Paragraphs [0189]-[0192]), due to either timer T304 expiring or the UE reaching a maximum number of random access attempts. The latter case can be happened before the random access timer T304 is expired, since after the timer T304 is started, UE is allowed to try the maximum number of random access attempts to the target cell (as described in Paragraph [0109]). Thus, this case is corresponding to the RLF case mentioned in the part of the amended claim 1 based on the event measurements with RSRP thresholds from two cells. Upon declaring RLF, the RLF mode is triggered at the first cell. Thus, the part of the claim 1 mentioned is clearly disclosed by Parichehrehteroujeni.
Therefore, the amended claim 1 is disclosed by Parichehrehteroujeni and Hwang and by the similar reasoning, the independent claims 15, 29, and 30 are disclosed, too.
However, it is noted that the scopes of the previous claims have been changed by the amendments, the new rejection is presented in the instant Office Action as set forth below.
Continued Examination Under 37 CFR 1.114
A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on March 6, 2026 has been entered.
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claims 1, 4-5, 7, 14-15, 18-19, 21, and 28-30 are rejected under U.S.C. 103 as being unpatentable over Ali Parichehrehteroujeni et. al. (USPub. No.: US 20230040285 A1, hereinafter “Parichehrehteroujeni”) in a view of June Hwang et. al. (USPub. No.: US 20210274559 A1, hereinafter “Hwang”).
Regarding claim 1, Parichehrehteroujeni teaches that a user equipment (UE) for wireless communication, comprising: one or more memories storing processor executable code; and one or more processors coupled with the one or more memories and operable to execute the code to cause the UE to: (Parichehrehteroujeni, in Fig. 14 and in Paragraphs [0392], [0395], and [0396], teaches that wireless device 1410 includes antenna 1411, interface 1414, processing circuitry 1420, device readable medium 1430, user interface equipment 1432, auxiliary equipment 1434, power source 1436 and power circuitry 1437. Processing circuitry 1420 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software, and/or encoded logic operable to provide WD 1410 functionality either alone or in combination with other WD 1410 components, such as device readable medium 1430. Processing circuitry 1420 may execute instructions stored in device readable medium 1430 or in memory within processing circuitry 1420 to provide the functionality. Therefore, it is clear that an apparatus for wireless communication at a user equipment (UE) may comprise a processor, memory coupled with the processor, and instructions stored in the memory that is executable by the processor.) perform a random access procedure to establish a connection with a first cell; (Parichehrehteroujeni, in Fig. 5 and in Paragraphs [0122]-[0129], teaches that UEs conventionally access a serving cell using a contention-based random-access procedure (CBRA). FIG. 5 illustrates the steps (i.e., operations) in an exemplary CBRA procedure. The detail 4 step procedure message 1: selecting and transmitting random access preamble, message 2: random access response processing, message3: RRC (Radio Resource Control) signaling to gNB, and message 4: RRC signaling to UE. Further detail procedure for each message can be found in Paragraphs [0123]-[0129]. Therefore, it is clear that the random access procedure to establish a connection with the source cell may be performed by UE.) measure, in response to performing the random access procedure, a first reference signal received power of a first reference signal received from the first cell; measure, in response to performing the random access procedure, a second reference signal received power for a second reference signal received from a second cell; (Parichehrehteroujeni, in Paragraphs [0101]-[0102], teaches that to support mobility (handover or reselection) between cells and/or beams, UE performs periodic cell search and measurement of signal power and quality such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) in both RRC_Connected and RRC_Idle states for the neighbor cells detected and the serving cell, using various downlink reference signals (RS) such as CRS (Cell-Specific RS), MB SFN RS, UE specific Demodulation RS (DMRS) of PDSCH, DMRS for EPDCCH or M/NPDCCH, Positioning RS (PRS), and Channel State Information RS (CSI-RS). UE reports the detected neighbor cells and the associated measurement report to the network. The measurement reports of UE are configured to be periodic or aperiodic based on a particular event such as A3 event, A5 event, etc. As described in Paragraph [0113]-[0114], UE performs the random access procedure to establish the initial connection in each cell. Thus, for the initial access for the serving cell (the second cell), the RA procedure is performed. Also, for the cell reselection or handover, for the access for the target cell (the first cell), the RA procedure is performed, again. Thus, for each cell, thru the random access procedure, the RSRP of each cell is measured and reported.) trigger, prior to expiration of a random access timer associated with the random access procedure, a radio link failure mode for the first cell in response to the first reference signal received power being less than a first reference signal received power threshold, the second reference signal received power being greater than the first reference signal received power threshold, (Parichehrehteroujeni, in Fig. 6A, 6B, and 7 and in Paragraphs [0157]-[0158] and [0167],teaches that, as described in Fig. 6A and 6B and in Paragraphs [0157]-[0158], in CHO (Conditional HandOver), the handover command is sent earlier to UE on the good radio condition and when the handover condition is met, the CHO is executed. The condition is determined based on the thresholds regarding the above event measurements (RSRP or RSRQ). Namely, the condition is met when for A3 event, the signal strength (RSRP) of the candidate target cell (the neighbor cell: the first cell) becomes X dBm better than the serving cell (the second cell) or when for A5 event, the signal strength (RSRP) of candidate target cell becomes better than Y dBm. Rather, in described in Paragraph [0167], when the UE is configured with multiple CHO command and each is associated to different target cell candidates. The condition associated with a first target cell (the first cell) is fulfilled and the UE applies a stored CHO target configuration (i.e. a stored RRCReconfiguration), starts timer T304, and attempts to perform random access towards that first candidate target cell (the first cell) while timer T304 is running. However, the UE fails to perform the random access (resulted in RLF (Radio link failure) as described in Paragraphs [0189]-[0192]), due to either timer T304 expiring or the UE reaching a maximum number of random access attempts. The latter case can be happened before the random access timer T304 is expired, since after the timer T304 is started in the handover, UE is allowed to try the maximum number of random access attempts to the target cell (as described in Paragraph [0109]). Thus, this case is corresponding to the RLF case mentioned in the claim, during CHO based on the event (RSRP) measurements with RSRP thresholds from two cells. Upon declaring RLF, the RLF mode is triggered at the first cell.)
Parichehrehteroujeni does not explicitly teach about a transmission power for a random access preamble on performing the random access procedure.
Hwang teaches that calculate, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold (Hwang, in Fig. 15 and in Paragraphs [0243]- [0244], teaches that In FIG. 15, a scenario in which the UE 2d-01 received the RAR message via RA-RNTI corresponding to the preamble transmission of operation 2d-11 but the index corresponding to the preamble is not included is assumed. When the UE 2d-01 retransmits the preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that based on the transmission power for a random access preamble may be calculated based on performing the random access procedure and further, if the transmission power of the random access preamble may be greater than the maximum transmit power of the UE, a radio link failure may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni and Hwang to include the technique of calculate, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold of Hwang in the system of Parichehrehteroujeni to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Regarding claim 4, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein to trigger the radio link failure mode, the one or more processors are operable to execute the code to cause the UE to: trigger the radio link failure mode based on a quantity of random access preamble transmissions exceeding a threshold quantity of random access preamble transmissions (Parichehrehteroujeni, in Paragraph [0130], teaches that preamble retransmission is also triggered when the UE sends a preamble and does not receive a RAR within a RAR (Random Access Response) time window. In that case, the UE performs preamble power
ramping and transmits the preamble again. In all these cases, when RAR time window expires when collision is detected, the UE performs preamble retransmission. A parameter provided by the RAN node via RRC signaling (see parameter preambleTransMax in RACH-ConfigCommon IE) controls how many times the UE should attempt preamble retransmission. Based on this observation, if continuously UE does not receive a RAR message, since the preamble power may reach UE maximum transmission power by preamble power ramping, the maximum number of preamble retransmission may be limited by the threshold such as the preambleTransMax value. Therefore, it is clear that when the preamble retransmission is reached at the threshold (such as the preambleTransMax value) and the RAR message is not received until then, the radio link may be failed and the radio link failure mode can be triggered.).
Regarding claim 5, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 4, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein the threshold quantity of random access preamble transmissions is half of a maximum quantity of preamble transmissions configured at the UE (Parichehrehteroujeni, in Paragraph [0130], teaches that preamble retransmission is also triggered when the UE sends a preamble and does not receive a RAR within a RAR (Random Access Response) time window. In that case, the UE performs preamble power ramping and transmits the preamble again. In all these cases, when RAR time window expires when collision is detected, the UE performs preamble retransmission. A parameter provided by the RAN node via RRC signaling (see parameter preambleTransMax in RACH-ConfigCommon IE) controls how many times the UE should attempt preamble retransmission. If continuously UE does not receive a RAR message, since the preamble power may reach UE maximum transmission power by preamble power ramping, the maximum number of preamble retransmission may be limited by the threshold such as the preambleTransMax value. According to this observation, the threshold for the maximum number of preamble retransmission can be chosen the value less than the limit such as preambleTransMax in RACH-ConfigCommon IE predefined by higher layer message and the threshold value may be a half of preambleTransMax.).
Regarding claim 7, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Hwang further teaches that wherein the transmission power threshold is a maximum output power of the UE (Hwang, in Fig. 15 and in Paragraph [0244], teaches that when the UE 2d-01 retransmits the
preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the
base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that the transmission power threshold for random access preamble retransmission may be the maximum transmit power of the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni and Hwang to include the technique of wherein the transmission power threshold is a maximum output power of the UE of Hwang in the system of Parichehrehteroujeni to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Regarding claim 14, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that perform, in response to triggering the radio link failure mode in the first cell, a cell reselection procedure; (Parichehrehteroujeni, in Fig. 7 and in Paragraph [0191], teaches that if the first failure is an RLF, the UE logs information regarding the RLF (e.g. in an RLF report) that led to the cell (re)selection that led to the successful CHO execution. Therefore, it is clear that if the RLF is declared during CHO (Conditional Handover), cell (re)selection procedure is performed.) and establish a connection with the second cell based at least in part on performing the cell reselection procedure (Parichehrehteroujeni, in Fig. 7 and in Paragraph [0192], teaches that in Paragraph [0192], the UE has first detected the RLF failure, logged the information, and in the second attempt the UE selects a cell for which it has stored a CHO configuration (i.e. an RRCReconfiguration with reconfiguration With-Sync) and applies that stored CHO configuration but the second attempt also fails, leading to cell selection and a re-establishment procedure that finally succeeds. Therefore, it is clear that declaring RLF lead to establish a connection with the second cell by performing the cell reselection procedure.)
Regarding claim 15, Parichehrehteroujeni teaches that an method for wireless communication at a user equipment (UE), comprising: performing a random access procedure to establish a connection with a first cell; (Parichehrehteroujeni, in Fig. 5 and in Paragraphs [0122]-[0129], teaches that UEs conventionally access a serving cell using a contention-based random-access procedure (CBRA). FIG. 5 illustrates the steps (i.e., operations) in an exemplary CBRA procedure. The detail 4 step procedure message 1: selecting and transmitting random access preamble, message 2: random access response processing, message3: RRC (Radio Resource Control) signaling to gNB, and message 4: RRC signaling to UE. Further detail procedure for each message can be found in Paragraphs [0123]-[0129]. Therefore, it is clear that the random access procedure to establish a connection with the source cell may be performed by UE.) measuring, in response to performing the random access procedure, a first reference signal received power of a first reference signal received from the first cell; measuring, in response to performing the random access procedure, a second reference signal received power for a second reference signal received from a second cell; (Parichehrehteroujeni, in Paragraphs [0101]-[0102], teaches that to support mobility (handover or reselection) between cells and/or beams, UE performs periodic cell search and measurement of signal power and quality such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) in both RRC_Connected and RRC_Idle states for the neighbor cells detected and the serving cell, using various downlink reference signals (RS) such as CRS (Cell-Specific RS), MB SFN RS, UE specific Demodulation RS (DMRS) of PDSCH, DMRS for EPDCCH or M/NPDCCH, Positioning RS (PRS), and Channel State Information RS (CSI-RS). UE reports the detected neighbor cells and the associated measurement report to the network. The measurement reports of UE are configured to be periodic or aperiodic based on a particular event such as A3 event, A5 event, etc. As described in Paragraph [0113]-[0114], UE performs the random access procedure to establish the initial connection in each cell. Thus, for the initial access for the serving cell (the second cell), the RA procedure is performed. Also, for the cell reselection or handover, for the access for the target cell (the first cell), the RA procedure is performed, again. Thus, for each cell, thru the random access procedure, the RSRP of each cell is measured and reported.) triggering, prior to expiration of a random access timer associated with the random access procedure, a radio link failure mode for the first cell in response to the first reference signal received power being less than a first reference signal received power threshold, the second reference signal received power being greater than the first reference signal received power threshold, (Parichehrehteroujeni, in Fig. 6A, 6B, and 7 and in Paragraphs [0157]-[0158] and [0167],teaches that, as described in Fig. 6A and 6B and in Paragraphs [0157]-[0158], in CHO (Conditional HandOver), the handover command is sent earlier to UE on the good radio condition and when the handover condition is met, the CHO is executed. The condition is determined based on the thresholds regarding the above event measurements (RSRP or RSRQ). Namely, the condition is met when for A3 event, the signal strength (RSRP) of the candidate target cell (the neighbor cell: the first cell) becomes X dBm better than the serving cell (the second cell) or when for A5 event, the signal strength (RSRP) of candidate target cell becomes better than Y dBm. Rather, in described in Paragraph [0167], when the UE is configured with multiple CHO command and each is associated to different target cell candidates. The condition associated with a first target cell (the first cell) is fulfilled and the UE applies a stored CHO target configuration (i.e. a stored RRCReconfiguration), starts timer T304, and attempts to perform random access towards that first candidate target cell (the first cell) while timer T304 is running. However, the UE fails to perform the random access (resulted in RLF (Radio link failure) as described in Paragraphs [0189]-[0192]), due to either timer T304 expiring or the UE reaching a maximum number of random access attempts. The latter case can be happened before the random access timer T304 is expired, since after the timer T304 is started in the handover, UE is allowed to try the maximum number of random access attempts to the target cell (as described in Paragraph [0109]). Thus, this case is corresponding to the RLF case mentioned in the claim, during CHO based on the event (RSRP) measurements with RSRP thresholds from two cells. Upon declaring RLF, the RLF mode is triggered at the first cell.)
Parichehrehteroujeni does not explicitly teach about a transmission power for a random access preamble on performing the random access procedure.
Hwang teaches that calculating, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold (Hwang, in Fig. 15 and in Paragraphs [0243]- [0244], teaches that In FIG. 15, a scenario in which the UE 2d-01 received the RAR message via RA-RNTI corresponding to the preamble transmission of operation 2d-11 but the index corresponding to the preamble is not included is assumed. When the UE 2d-01 retransmits the preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that based on the transmission power for a random access preamble may be calculated based on performing the random access procedure and further, if the transmission power of the random access preamble may be greater than the maximum transmit power of the UE, a radio link failure may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni and Hwang to include the technique of calculating, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold of Hwang in the system of Parichehrehteroujeni to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Regarding claim 18, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein triggering the radio link failure mode comprises: triggering the radio link failure mode based on a quantity of random access preamble transmissions exceeding a threshold quantity of random access preamble transmissions (Parichehrehteroujeni, in Paragraph [0130], teaches that preamble retransmission is also triggered when the UE sends a preamble and does not receive a RAR within a RAR (Random Access Response) time window. In that case, the UE performs preamble power ramping and transmits the preamble again. In all these cases, when RAR time window expires when collision is detected, the UE performs preamble retransmission. A parameter provided by the RAN node via RRC signaling (see parameter preambleTransMax in RACH-ConfigCommon IE) controls how many times the UE should attempt preamble retransmission. Based on this observation, if continuously UE does not receive a RAR message, since the preamble power may reach UE maximum transmission power by preamble power ramping, the maximum number of preamble retransmission may be limited by the threshold such as the preambleTransMax value. Therefore, it is clear that when the preamble retransmission is reached at the threshold (such as the preambleTransMax value) and the RAR message is not received until then, the radio link may be failed and the radio link failure mode can be triggered.).
Regarding claim 19, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 18, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein the threshold quantity of random access preamble transmissions is half of a maximum quantity of preamble transmissions configured at the UE (Parichehrehteroujeni, in Paragraph [0130], teaches that preamble retransmission is also triggered when the UE sends a preamble and does not receive a RAR within a RAR (Random Access Response) time window. In that case, the UE performs preamble power ramping and transmits the preamble again. In all these cases, when RAR time window expires when collision is detected, the UE performs preamble retransmission. A parameter provided by the RAN node via RRC signaling (see parameter preambleTransMax in RACH-ConfigCommon IE) controls how many times the UE should attempt preamble retransmission. If continuously UE does not receive a RAR message, since the preamble power may reach UE maximum transmission power by preamble power ramping, the maximum number of preamble retransmission may be limited by the threshold such as the preambleTransMax value. According to this observation, the threshold for the maximum number of preamble retransmission can be chosen the value less than the limit such as preambleTransMax in RACH-ConfigCommon IE predefined by higher layer message and the threshold value may be a half of preambleTransMax.).
Regarding claim 21, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Hwang further teaches that wherein the transmission power threshold is a maximum output power of the UE (Hwang, in Fig. 15 and in Paragraph [0244], teaches that when the UE 2d-01 retransmits the
preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the
base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that the transmission power threshold for random access preamble retransmission may be the maximum transmit power of the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang and Da Silva to include the technique of wherein the transmission power threshold is a maximum output power of the UE of Hwang in the system of combination of Parichehrehteroujeni and Da Silva to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Regarding claim 28, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that further comprising: performing, in response to triggering the radio link failure mode in the first cell, a cell reselection procedure; (Parichehrehteroujeni, in Fig. 7 and in Paragraph [0191], teaches that if the first failure is an RLF, the UE logs information regarding the RLF (e.g. in an RLF report) that led to the cell (re)selection that led to the successful CHO execution. Therefore, it is clear that if the RLF is declared during CHO (Conditional Handover), cell (re)selection procedure is performed.) and establishing a connection with the second cell based at least in part on performing the cell reselection procedure (Parichehrehteroujeni, in Fig. 7 and in Paragraph [0192], teaches that in Paragraph [0192], the UE has first detected the RLF failure, logged the information, and in the second attempt the UE selects a cell for which it has stored a CHO configuration (i.e. an RRCReconfiguration with reconfiguration With-Sync) and applies that stored CHO configuration but the second attempt also fails, leading to cell selection and a re-establishment procedure that finally succeeds. Therefore, it is clear that declaring RLF lead to establish a connection with the second cell by performing the cell reselection procedure.)
Regarding claim 29, Parichehrehteroujeni teaches that an apparatus for wireless communication at a user equipment (UE), comprising: means for performing a random access procedure to establish a connection with a first cell; (Parichehrehteroujeni, in Fig. 5 and in Paragraphs [0122]-[0129], teaches that UEs conventionally access a serving cell using a contention-based random-access procedure (CBRA). FIG. 5 illustrates the steps (i.e., operations) in an exemplary CBRA procedure. The detail 4 step procedure message 1: selecting and transmitting random access preamble, message 2: random access response processing, message3: RRC (Radio Resource Control) signaling to gNB, and message 4: RRC signaling to UE. Further detail procedure for each message can be found in Paragraphs [0123]-[0129]. Therefore, it is clear that the random access procedure to establish a connection with the source cell may be performed by UE.) means for measuring, in response to performing the random access procedure, a first reference signal received power of a first reference signal received from the first cell; means for measuring, in response to performing the random access procedure, a second reference signal received power for a second reference signal received from a second cell; (Parichehrehteroujeni, in Paragraphs [0101]-[0102], teaches that to support mobility (handover or reselection) between cells and/or beams, UE performs periodic cell search and measurement of signal power and quality such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) in both RRC_Connected and RRC_Idle states for the neighbor cells detected and the serving cell, using various downlink reference signals (RS) such as CRS (Cell-Specific RS), MB SFN RS, UE specific Demodulation RS (DMRS) of PDSCH, DMRS for EPDCCH or M/NPDCCH, Positioning RS (PRS), and Channel State Information RS (CSI-RS). UE reports the detected neighbor cells and the associated measurement report to the network. The measurement reports of UE are configured to be periodic or aperiodic based on a particular event such as A3 event, A5 event, etc. As described in Paragraph [0113]-[0114], UE performs the random access procedure to establish the initial connection in each cell. Thus, for the initial access for the serving cell (the second cell), the RA procedure is performed. Also, for the cell reselection or handover, for the access for the target cell (the first cell), the RA procedure is performed, again. Thus, for each cell, thru the random access procedure, the RSRP of each cell is measured and reported.) means for triggering, prior to expiration of a random access timer associated with the random access procedure, a radio link failure mode for the first cell in response to the first reference signal received power being less than a first reference signal received power threshold, the second reference signal received power being greater than the first reference signal received power threshold, (Parichehrehteroujeni, in Fig. 6A, 6B, and 7 and in Paragraphs [0157]-[0158] and [0167],teaches that, as described in Fig. 6A and 6B and in Paragraphs [0157]-[0158], in CHO (Conditional HandOver), the handover command is sent earlier to UE on the good radio condition and when the handover condition is met, the CHO is executed. The condition is determined based on the thresholds regarding the above event measurements (RSRP or RSRQ). Namely, the condition is met when for A3 event, the signal strength (RSRP) of the candidate target cell (the neighbor cell: the first cell) becomes X dBm better than the serving cell (the second cell) or when for A5 event, the signal strength (RSRP) of candidate target cell becomes better than Y dBm. Rather, in described in Paragraph [0167], when the UE is configured with multiple CHO command and each is associated to different target cell candidates. The condition associated with a first target cell (the first cell) is fulfilled and the UE applies a stored CHO target configuration (i.e. a stored RRCReconfiguration), starts timer T304, and attempts to perform random access towards that first candidate target cell (the first cell) while timer T304 is running. However, the UE fails to perform the random access (resulted in RLF (Radio link failure) as described in Paragraphs [0189]-[0192]), due to either timer T304 expiring or the UE reaching a maximum number of random access attempts. The latter case can be happened before the random access timer T304 is expired, since after the timer T304 is started in the handover, UE is allowed to try the maximum number of random access attempts to the target cell (as described in Paragraph [0109]). Thus, this case is corresponding to the RLF case mentioned in the claim, during CHO based on the event (RSRP) measurements with RSRP thresholds from two cells. Upon declaring RLF, the RLF mode is triggered at the first cell.)
Parichehrehteroujeni does not explicitly teach about a transmission power for a random access preamble on performing the random access procedure.
Hwang teaches that means for calculating, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold (Hwang, in Fig. 15 and in Paragraphs [0243]- [0244], teaches that In FIG. 15, a scenario in which the UE 2d-01 received the RAR message via RA-RNTI corresponding to the preamble transmission of operation 2d-11 but the index corresponding to the preamble is not included is assumed. When the UE 2d-01 retransmits the preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that based on the transmission power for a random access preamble may be calculated based on performing the random access procedure and further, if the transmission power of the random access preamble may be greater than the maximum transmit power of the UE, a radio link failure may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni and Hwang to include the technique of means for calculating, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold of Hwang in the system of Parichehrehteroujeni to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Regarding claim 30, Parichehrehteroujeni teaches that A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by one or more processors to: (Parichehrehteroujeni, in Fig. 14 and in Paragraphs [0392], [0395], and [0396], teaches that wireless device 1410 includes antenna 1411, interface 1414, processing circuitry 1420, device readable medium 1430, user interface equipment 1432, auxiliary equipment 1434, power source 1436 and power circuitry 1437. Processing circuitry 1420 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software, and/or encoded logic operable to provide WD 1410 functionality either alone or in combination with other WD 1410 components, such as device readable medium 1430. Processing circuitry 1420 may execute instructions stored in device readable medium 1430 or in memory within processing circuitry 1420 to provide the functionality. Therefore, it is clear that an apparatus for wireless communication at a user equipment (UE) may comprise a processor, memory coupled with the processor, and instructions stored in the memory that is executable by the processor.) perform a random access procedure to establish a connection with a first cell; (Parichehrehteroujeni, in Fig. 5 and in Paragraphs [0122]-[0129], teaches that UEs conventionally access a serving cell using a contention-based random-access procedure (CBRA). FIG. 5 illustrates the steps (i.e., operations) in an exemplary CBRA procedure. The detail 4 step procedure message 1: selecting and transmitting random access preamble, message 2: random access response processing, message3: RRC (Radio Resource Control) signaling to gNB, and message 4: RRC signaling to UE. Further detail procedure for each message can be found in Paragraphs [0123]-[0129]. Therefore, it is clear that the random access procedure to establish a connection with the source cell may be performed by UE.) measure, in response to performing the random access procedure, a first reference signal received power of a first reference signal received from the first cell; measure, in response to performing the random access procedure, a second reference signal received power for a second reference signal received from a second cell; (Parichehrehteroujeni, in Paragraphs [0101]-[0102], teaches that to support mobility (handover or reselection) between cells and/or beams, UE performs periodic cell search and measurement of signal power and quality such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) in both RRC_Connected and RRC_Idle states for the neighbor cells detected and the serving cell, using various downlink reference signals (RS) such as CRS (Cell-Specific RS), MB SFN RS, UE specific Demodulation RS (DMRS) of PDSCH, DMRS for EPDCCH or M/NPDCCH, Positioning RS (PRS), and Channel State Information RS (CSI-RS). UE reports the detected neighbor cells and the associated measurement report to the network. The measurement reports of UE are configured to be periodic or aperiodic based on a particular event such as A3 event, A5 event, etc. As described in Paragraph [0113]-[0114], UE performs the random access procedure to establish the initial connection in each cell. Thus, for the initial access for the serving cell (the second cell), the RA procedure is performed. Also, for the cell reselection or handover, for the access for the target cell (the first cell), the RA procedure is performed, again. Thus, for each cell, thru the random access procedure, the RSRP of each cell is measured and reported.) trigger a radio link failure mode for the first cell prior to expiration of a random access timer associated with the random access procedure and based at least in part on the first reference signal received power being less than a first reference signal received power threshold, the second reference signal received power being greater than the first reference signal received power threshold, (Parichehrehteroujeni, in Fig. 6A, 6B, and 7 and in Paragraphs [0157]-[0158] and [0167],teaches that, as described in Fig. 6A and 6B and in Paragraphs [0157]-[0158], in CHO (Conditional HandOver), the handover command is sent earlier to UE on the good radio condition and when the handover condition is met, the CHO is executed. The condition is determined based on the thresholds regarding the above event measurements (RSRP or RSRQ). Namely, the condition is met when for A3 event, the signal strength (RSRP) of the candidate target cell (the neighbor cell: the first cell) becomes X dBm better than the serving cell (the second cell) or when for A5 event, the signal strength (RSRP) of candidate target cell becomes better than Y dBm. Rather, in described in Paragraph [0167], when the UE is configured with multiple CHO command and each is associated to different target cell candidates. The condition associated with a first target cell (the first cell) is fulfilled and the UE applies a stored CHO target configuration (i.e. a stored RRCReconfiguration), starts timer T304, and attempts to perform random access towards that first candidate target cell (the first cell) while timer T304 is running. However, the UE fails to perform the random access (resulted in RLF (Radio link failure) as described in Paragraphs [0189]-[0192]), due to either timer T304 expiring or the UE reaching a maximum number of random access attempts. The latter case can be happened before the random access timer T304 is expired, since after the timer T304 is started in the handover, UE is allowed to try the maximum number of random access attempts to the target cell (as described in Paragraph [0109]). Thus, this case is corresponding to the RLF case mentioned in the claim, during CHO based on the event (RSRP) measurements with RSRP thresholds from two cells. Upon declaring RLF, the RLF mode is triggered at the first cell.)
Parichehrehteroujeni does not explicitly teach about a transmission power for a random access preamble on performing the random access procedure.
Hwang teaches that calculate, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold (Hwang, in Fig. 15 and in Paragraphs [0243]- [0244], teaches that In FIG. 15, a scenario in which the UE 2d-01 received the RAR message via RA-RNTI corresponding to the preamble transmission of operation 2d-11 but the index corresponding to the preamble is not included is assumed. When the UE 2d-01 retransmits the preamble in operation 2d-13, the UE 2d-01 may retransmit the preamble in power (power ramping) obtained by increasing transmit power of transmitting the preamble compared to the preamble that was transmitted in operation 2d-11 only by a value (preamblePowerRampingStep) configured by the base station 2d-03. Accordingly, as the number of retransmissions increases, the power continuously increases until the maximum transmit power of the UE 2d-01 is reached. Therefore, it is clear that based on the transmission power for a random access preamble may be calculated based on performing the random access procedure and further, if the transmission power of the random access preamble may be greater than the maximum transmit power of the UE, a radio link failure may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni and Hwang to include the technique of calculate, based at least in part on performing the random access procedure, a transmission power for a random access preamble; and the transmission power being greater than a transmission power threshold of Hwang in the system of Parichehrehteroujeni to propose a method of reporting radio link failure to a base station during a random access process performed to request System Information and to effectively provide or optimize various services in a mobile communication system. (Hwang, see Paragraphs [0001], [0008], and [0306]).).
Claims 2-3, 12-13, 16-17, and 26-27 are rejected under U.S.C. 103 as being unpatentable over Ali Parichehrehteroujeni et. al. (USPub. No.: US 20230040285 A1, hereinafter “Parichehrehteroujeni”) in a view of June Hwang et. al. (USPub. No.: US 20210274559 A1, hereinafter “Hwang”) and further in a view of Icaro L. J. Da Silva et. al. (USPub. No.: US 20240040461 A1, hereinafter “Da Silva”).
Regarding claim 2, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the one or more processors are further operable to execute the code to cause the apparatus UE to: use a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE.
Da Silva teaches that wherein the one or more processors are further operable to execute the code to cause the apparatus UE to: (Da Silva, in Paragraphs [0097], teaches that The methods described herein for the UE 401 may be respectively implemented by means of a computer program 2320 product, comprising instructions, i.e., software code portions, which, when executed on at least one processor2310, cause the at least one processor 2310 to carry out the actions described herein, as performed by the UE 401. Therefore, it is clear that the instructions are further executable by the processor.) use a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE (Da Silva, in Paragraphs [0308]-[0320], teaches that the event A2 is related to the measurement RSRP of the serving cell and the condition can be occurred when the RSRP of the serving cell becomes worse than the thresholdA2 where the thresholdA2 is defined in reportConfigNR in the table for ReportConfigNR information element in Page 22-23. As described in Paragraph [0319], the mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. Therefore, it is clear that a reference signal received power threshold corresponding to a serving cell measurement reporting event may be used as the first reference signal received power threshold (ThreshA2) based on the serving cell measurement reporting event (event A2) being configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein the one or more processors are further operable to execute the code to cause the apparatus UE to: use a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 3, combination of Parichehrehteroujeni, Hwang, and Da Silva teaches the features defined in the claims 2, -refer to the indicated claim for reference(s).
Da Silva further teaches that wherein to use the reference signal received power threshold corresponding to the serving cell measurement reporting event, the one or more processors are operable to execute the code to cause the UE to: (Da Silva, in Paragraphs [0308]-[0320], teaches that the event A2 is related to the measurement RSRP of the serving cell and the condition can be occurred when the RSRP of the serving cell becomes worse than the thresholdA2 where the thresholdA2 is defined in reportConfigNR in the table for ReportConfigNR information element in Page 22-23. As described in Paragraph [0319], the mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. Therefore, it is clear that a reference signal received power threshold corresponding to a serving cell measurement reporting event may be used by following a report configuration and a measurement configuration.) use, as the first reference signal received power threshold, a minimum reference signal received power threshold of a plurality of reference signal received power thresholds corresponding to the serving cell measurement reporting event that is configured at the UE (Da Silva, in Paragraphs [0480]-[0485] and in Page 24, Table for EventTriggerConfig field descriptions, teaches that Paragraphs [0480]-[0485] describes the summary of measurement events Ax, x = 1 to 6 with thresholds. The detail event explanation can be found in Paragraphs [0289]-[0412]. For event A1, A2, A4, and A5, each measurement event is triggered for serving cell and neighbor cells, based on the threshold for each event. As shown in the table of EventTriggerConfig field descriptions in Page 24, threshold value associated to the selected trigger quantity (e.g. RSRP (Reference Signal Received Power, RSRQ (Reference Signal Received Quality), SINR (Signal to Interference and Noise Ratio) per RS (Reference Signal) Type (e.g. SS (Synchronization Signal)/PBCH (Physical Broadcast Channel) block, CSI-RS (Channel State Information-Reference Signal)) to be used in NR(New Radio) measurement or prediction report triggering condition for event number aN (corresponding to Ax, where a = A, x = N). If multiple thresholds are defined for event number aN, the thresholds are differentiated by M. The network configures aN-Threshold1 only for events A1, A2, A4, A5 and a5-Threshold2 only for event A5. In the same eventA5, the network configures the same quantity for the Meas TriggerQuantity of the a5-Threshold1 and for the Meas TriggerQuantity of the a5-Threshold2. Among the measurement events Ax, x = 1 to 6, event A2, A4, and A5 need the event threshold to trigger the event. Among events, the event A2 and the event A5 checks the unacceptable quality condition of the cell (serving cell), but the rest of them checks the acceptable quality condition of the cell. Since the unacceptable quality condition of a cell should be less than the acceptable quality condition of a cell, one of the threshold for the event A2 (ThresholdA2) and the threshold for the serving cell measurement in the event A5 (a5-Threshold1 or Threshold1 in the above) can be minimum thresholds with measurement quantity. Therefore, the event A2 is considered with serving cell RSRP measurement and the threshold (ThresholdA2) can be a minimum RSRP threshold among RSRP thresholds for the serving cell measurement reporting event configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein to use the reference signal received power threshold corresponding to the serving cell measurement reporting event, the one or more processors are operable to execute the code to cause the UE to: use, as the first reference signal received power threshold, a minimum reference signal received power threshold of a plurality of reference signal received power thresholds corresponding to the serving cell measurement reporting event that is configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 12, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein to trigger the radio link failure mode, the one or
more processors are operable to execute the code to cause the UE to: (Parichehrehteroujeni, in Fig. 6A and 6B and in Paragraph [0155], teaches that although in Fig. 6A and 6B, the description is based on event A3, in general, based on the event Ax measurement and results based on thresholds, the radio link failure mode can be trigger. Therefore, it is clear that the radio link failure mode can be triggered based on the event based measurement and its results.).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that evaluate whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold.
Da Silva teaches that evaluate whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, (Da Silva, in Paragraphs [0309]-[0320], teaches that this case is corresponding to the event A2 based measurement and decision. The event A2 may be triggered when the serving cell (first cell) measurement becomes worse that the threshold, namely, Ms + Hys < ThresholdA2, where the Ms is the measurement results (RSRP, RSRQ, or SNR) of the serving cell and Hys is the hysteresis parameter for the event A2 defined within reportConfigNR of event A2. Therefore, when event A2 is triggered, the first reference signal received power plus a hysteresis value may be less than the first reference signal received power threshold (ThresholdA2).) wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold (Da Silva, in Paragraphs [0309]-[0320], teaches that in the above, it is learned that according to the event measurement and its results, the RLF (Radio Link Failure) mode can be triggered. When the event A2 is applied and the first RSRP (Reference Signal Received Power) plus the hysteresis value is less than the threshold (RSRP based thresholdA2), the RLF mode may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of evaluate whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 13, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Parichehrehteroujeni further teaches that wherein to trigger the radio link failure mode, the one or
more processors are operable to execute the code to cause the UE to: (Parichehrehteroujeni, in Fig. 6A and 6B and in Paragraph [0155], teaches that although in Fig. 6A and 6B, the description is based on event A3, in general, based on the event Ax measurement and results based on thresholds, the radio link failure mode can be trigger. Therefore, it is clear that the radio link failure mode can be triggered based on the event based measurement and its results.).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that evaluate whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold.
Da Silva further teaches that evaluate whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, (Da Silva, in Paragraphs [0309]-[0320], [0331]-[0337], and [0426]-[0427], teaches that as shown in [0426]-[0427], Ax AND Ay with x and y being integers 1 to 6 with various different configurations. To declare RLF, event A2 and event A3 can be used where event A2 is related to the RSRP measurement of a serving cell and event A3 is related to the RSRP measurement of neighbor cells. In Paragraphs [0309]-[0320], an event A2 condition is that the measurement RSRP of the serving cell becomes worse than the threshold that is Ms+Hys < ThreshA2 where Ms is the measured RSRP of the serving cell, Hys is the hysteresis parameter for this event, and ThreshA2 is defined with in reportConfigNR for event A2 (shown in Table for ReportConfigNR information element in Page 22-23). The mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. In Paragraphs [0331]-[0337], an event A3 condition is that the measurement RSRP of neighbor cell becomes better than the measurement RSRP of the serving cell. In Paragraph [0334], when ignoring all the offset, the condition can be Mn + Ofn + Ocn - Hys > Mp + Ofp + Ocp + Off, where Mn is the measured RSRP of the neighbor cell, Mp is Ms, the measured RSRP of the serving cell, Hys is the hysteresis parameter, and other parameters are offset. With ignoring offsets, the condition of event A3 becomes Mn -Hys > Ms, namely Mn >Ms +Hys. If using the combined event condition, A2 AND A3, the condition can be Mn > Ms + Hys, to declare RLF, where Ms +Hys < ThresholdA2 and Mn can be greater than and equal to ThresholdA2. To satisfy this combination event, the condition of RLF can be chosen that the RSRP of the serving cell (the first cell) is less than ThresholdA2 and the RSRP of neighbor cell is greater than ThresholdA2. From this, it is also true that Mn + Hys > ThresholdA2. Therefore, when the combination of event A2 and A3 may be triggered, whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold can be evaluated to declare the RLF.) wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold (Da Silva, in Paragraphs [0309]-[0320], [0331]-[0337], and [0426]-[0427], teaches that when event A2 and A3 is triggered, as shown in the above, the reference signal received power (RSRP) plus the hysteresis value can be greater that the first RSRP threshold (ThresholdA2) and if this condition is met, the RLF mode for the first cell (serving cell) can be triggered as described in the above. Therefore, it is clear if the reference signal received power (RSRP) plus the hysteresis value can be greater that the first RSRP threshold (ThresholdA2), the RLF mode in the first cell can be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of evaluate whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 16, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that using a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE.
Da Silva further teaches that using a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE (Da Silva, in Paragraphs [0308]-[0320], teaches that the event A2 is related to the measurement RSRP of the serving cell and the condition can be occurred when the RSRP of the serving cell becomes worse than the thresholdA2 where the thresholdA2 is defined in reportConfigNR in the table for ReportConfigNR information element in Page 22-23. As described in Paragraph [0319], the mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. Therefore, it is clear that a reference signal received power threshold corresponding to a serving cell measurement reporting event may be used as the first reference signal received power threshold (ThreshA2) based on the serving cell measurement reporting event (event A2) being configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of using a reference signal received power threshold corresponding to a serving cell measurement reporting event as the first reference signal received power threshold based at least in part on the serving cell measurement reporting event being configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 17, combination of Parichehrehteroujeni, Hwang, and Da Silva teaches the features defined in the claims 16, -refer to the indicated claim for reference(s).
Da Silva further teaches that wherein using the reference signal received power threshold corresponding to serving cell measurement event comprises: (Da Silva, in Paragraphs [0308]-[0320], teaches that the event A2 is related to the measurement RSRP of the serving cell and the condition can be occurred when the RSRP of the serving cell becomes worse than the thresholdA2 where the thresholdA2 is defined in reportConfigNR in the table for ReportConfigNR information element in Page 22-23. As described in Paragraph [0319], the mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. Therefore, it is clear that a reference signal received power threshold corresponding to a serving cell measurement reporting event may be used by following a report configuration and a measurement configuration.) using, as the first reference signal received power threshold, a minimum reference signal received power threshold of a plurality of reference signal received power thresholds corresponding to the serving cell measurement reporting event that is configured at the UE (Da Silva, in Paragraphs [0480]-[0485] and in Page 24, Table for EventTriggerConfig field descriptions, teaches that Paragraphs [0480]-[0485] describes the summary of measurement events Ax, x = 1 to 6 with thresholds. The detail event explanation can be found in Paragraphs [0289]-[0412]. For event A1, A2, A4, and A5, each measurement event is triggered for serving cell and neighbor cells, based on the threshold for each event. As shown in the table of EventTriggerConfig field descriptions in Page 24, threshold value associated to the selected trigger quantity (e.g. RSRP (Reference Signal Received Power, RSRQ (Reference Signal Received Quality), SINR (Signal to Interference and Noise Ratio) per RS (Reference Signal) Type (e.g. SS (Synchronization Signal)/PBCH (Physical Broadcast Channel) block, CSI-RS (Channel State Information-Reference Signal)) to be used in NR(New Radio) measurement or prediction report triggering condition for event number aN (corresponding to Ax, where a = A, x = N). If multiple thresholds are defined for event number aN, the thresholds are differentiated by M. The network configures aN-Threshold1 only for events A1, A2, A4, A5 and a5-Threshold2 only for event A5. In the same eventA5, the network configures the same quantity for the Meas TriggerQuantity of the a5-Threshold1 and for the Meas TriggerQuantity of the a5-Threshold2. Among the measurement events Ax, x = 1 to 6, event A2, A4, and A5 need the event threshold to trigger the event. Among events, the event A2 and the event A5 checks the unacceptable quality condition of the cell (serving cell), but the rest of them checks the acceptable quality condition of the cell. Since the unacceptable quality condition of a cell should be less than the acceptable quality condition of a cell, one of the threshold for the event A2 (ThresholdA2) and the threshold for the serving cell measurement in the event A5 (a5-Threshold1 or Threshold1 in the above) can be minimum thresholds with measurement quantity. Therefore, the event A2 is considered with serving cell RSRP measurement and the threshold (ThresholdA2) can be a minimum RSRP threshold among RSRP thresholds for the serving cell measurement reporting event configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein using the reference signal received power threshold corresponding to serving cell measurement event comprises: using, as the first reference signal received power threshold, a minimum reference signal received power threshold of a plurality of reference signal received power thresholds corresponding to the serving cell measurement reporting event that is configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 26, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein triggering the radio link failure mode comprises: evaluating whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold.
Da Silva further teaches that wherein triggering the radio link failure mode comprises: evaluating whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, (Da Silva, in Paragraphs [0309]-[0320], teaches that this case is corresponding to the event A2 based measurement and decision. The event A2 may be triggered when the serving cell (first cell) measurement becomes worse that the threshold, namely, Ms + Hys < ThresholdA2, where the Ms is the measurement results (RSRP, RSRQ, or SNR) of the serving cell and Hys is the hysteresis parameter for the event A2 defined within reportConfigNR of event A2. Therefore, when event A2 is triggered, the first reference signal received power plus a hysteresis value may be less than the first reference signal received power threshold (ThresholdA2).) wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold (Da Silva, in Paragraphs [0309]-[0320], teaches that in the above, it is learned that according to the event measurement and its results, the RLF (Radio Link Failure) mode can be triggered. When the event A2 is applied and the first RSRP (Reference Signal Received Power) plus the hysteresis value is less than the threshold (RSRP based thresholdA2), the RLF mode may be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein triggering the radio link failure mode comprises: evaluating whether the first reference signal received power plus a hysteresis value is less than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the first reference signal received power plus the hysteresis value being less than the first reference signal received power threshold of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Regarding claim 27, combination of Parichehrehteroujeni and Hwang, and Da Silva teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein triggering the radio link failure mode comprises: evaluating whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold.
Da Silva further teaches that wherein triggering the radio link failure mode comprises: evaluating whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, (Da Silva, in Paragraphs [0309]-[0320], [0331]-[0337], and [0426]-[0427], teaches that as shown in [0426]-[0427], Ax AND Ay with x and y being integers 1 to 6 with various different configurations. To declare RLF, event A2 and event A3 can be used where event A2 is related to the RSRP measurement of a serving cell and event A3 is related to the RSRP measurement of neighbor cells. In Paragraphs [0309]-[0320], an event A2 condition is that the measurement RSRP of the serving cell becomes worse than the threshold that is Ms+Hys < ThreshA2 where Ms is the measured RSRP of the serving cell, Hys is the hysteresis parameter for this event, and ThreshA2 is defined with in reportConfigNR for event A2 (shown in Table for ReportConfigNR information element in Page 22-23). The mobility information for the event A2 may correspond to a measurement result of the serving cell that is indicated by the measObjectNR associated to this event. In Paragraphs [0331]-[0337], an event A3 condition is that the measurement RSRP of neighbor cell becomes better than the measurement RSRP of the serving cell. In Paragraph [0334], when ignoring all the offset, the condition can be Mn + Ofn + Ocn - Hys > Mp + Ofp + Ocp + Off, where Mn is the measured RSRP of the neighbor cell, Mp is Ms, the measured RSRP of the serving cell, Hys is the hysteresis parameter, and other parameters are offset. With ignoring offsets, the condition of event A3 becomes Mn -Hys > Ms, namely Mn >Ms +Hys. If using the combined event condition, A2 AND A3, the condition can be Mn > Ms + Hys, to declare RLF, where Ms +Hys < ThresholdA2 and Mn can be greater than and equal to ThresholdA2. To satisfy this combination event, the condition of RLF can be chosen that the RSRP of the serving cell (the first cell) is less than ThresholdA2 and the RSRP of neighbor cell is greater than ThresholdA2. From this, it is also true that Mn + Hys > ThresholdA2. Therefore, when the combination of event A2 and A3 may be triggered, whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold can be evaluated to declare the RLF.) wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold (Da Silva, in Paragraphs [0309]-[0320], [0331]-[0337], and [0426]-[0427], teaches that when event A2 and A3 is triggered, as shown in the above, the reference signal received power (RSRP) plus the hysteresis value can be greater that the first RSRP threshold (ThresholdA2) and if this condition is met, the RLF mode for the first cell (serving cell) can be triggered as described in the above. Therefore, it is clear if the reference signal received power (RSRP) plus the hysteresis value can be greater that the first RSRP threshold (ThresholdA2), the RLF mode in the first cell can be triggered.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein triggering the radio link failure mode comprises: evaluating whether the second reference signal received power plus a hysteresis value is greater than the first reference signal received power threshold, wherein the radio link failure mode for the first cell is triggered based at least in part on the second reference signal received power plus the hysteresis value being greater than the first reference signal received power threshold of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
Claims 6 and 20 are rejected under U.S.C. 103 as being unpatentable over Ali Parichehrehteroujeni et. al. (USPub. No.: US 20230040285 A1, hereinafter “Parichehrehteroujeni”) in a view of June Hwang et. al. (USPub. No.: US 20210274559 A1, hereinafter “Hwang”) and further in a view of Icaro L. J. Da Silva et. al. (USPub. No.: US 20240040461 A1, hereinafter “Da Silva”) and further in a view of Tarakkumar G. Dhanani et. al. (USPub. No.: US 20210400757 A1, hereinafter “Dhanani”).
Regarding claim 6, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the one or more processors are further operable to execute the code to cause the UE to: determine that a serving cell measurement reporting event is not configured at the UE; and use a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE.
Da Silva teaches that wherein the instructions are further executable by the processor to cause the apparatus to: determine that a serving cell measurement reporting event is not configured at the UE; (Da Silva, in Pargarphs [0099]-[0101] and [0526]-[0527], teaches that in Paragraphs [0099]-[0101], Although talking about measurement prediction, the measurement type is same as non-predicted measurement. To improve handover performance, UE measurement rely on the following: Periodic measurement reports and/or Event trigger measurement reports but using an early trigger, e.g. trigger condition more conservative than the condition closer to a handover, i.e. source is still good enough.
In Paragraphs [0526]-[0527], to trigger measurement report, UE shall set either eventTriggered or Periodical if the corresponding reportConfig includes a reportType for each measId in the measIdList within VarMeasConfig. Therefore, it is clear that to trigger measurement report, UE shall select the measurement triggering method, either periodic or eventTriggered, based on the measurement configuration.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of wherein the instructions are further executable by the processor to cause the apparatus to: determine that a serving cell measurement reporting event is not configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
However, combination of Parichehrehteroujeni, Hwang, and Da Silva does not explicitly teach that use a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE.
Dhanani teaches that use a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE (Dhanani, in Paragraphs [0019] and [0021], teaches that as described in the above, to support mobility (e.g., handover or reselection) between cells and/or beams, a UE can perform periodic cell search and measurements of signal power and quality (e.g., reference signal received power, RSRP, and reference signal received quality, RSRQ) in both RRC_CONNECTED and RRC_IDLE states, instead of event-triggered measurement. In Paragraph [0019], a UE in Radio Resource Control (RRC) Idle mode monitors a reference signal received power (RSRP) of a serving cell for the UE (e.g., the currently camped serving cell). If this RSRP drops below a threshold, the UE may reselect to another serving cell of a same or different RAT (if available). In these systems, relevant threshold may be, e.g., 2*qRxLevMin, where qRxLevMin is a minimum required RSRP measurement of the current serving cell as set by a RAN node of the serving cell.
Otherwise (if another serving cell of a same or different RAT is not available), the UE declares that it is out of service (OOS) (it is also called out-of-synch). To come back into service, the UE searches for available serving cells on various RATs that meet a minimum camping threshold (which may be, e.g., the same 2*qRxLevMin threshold discussed above) in order to camp back on the network. If these conditions are not met then the UE continues to be in OOS. Another similar case to declare OOS is occurred during RRC Connected mode. A UE in RRC Connected mode stays in RRC Connected mode until it has a Radio Link Failure (RLF) and is unable to recover from the RLF. The criteria for a RLF may not align with the threshold corresponding to declaring OOS from RRC Idle mode as discussed above (e.g., the RLF criteria may not be met unless a signal measurement weaker than 2*qRxLevMin is in effect at the serving cell of the UE). Therefore, during either RRC Idle state or RRC Connected state, based on the threshold, 2*qRxLevMin, the RLF is declared either by declaring OOS in RRC Idle state with this exact threshold or by declaring RLF in RRC Connected State by about the threshold. Based on this observation, it is clear that a threshold corresponding to a minimum required receive power threshold (2*qRxLevMin) in the first cell (Serving Cell) is used as the first RSRP threshold for the non-event triggered serving cell measurement reporting configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, Da Silva, and Dhanani to include the technique of use a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE of Dhanani in the system of combination of Parichehrehteroujeni, Hwang, and Da Silva to provide a method for a UE for
initiating signaling activity with a RAN node in order to extend RRC Connected mode opportunistically or to reduce the number of transitions between RRC Connected mode and RRC Idle mode (Dhanani, see Paragraphs [0028] and [0051]-[0052]).).
Regarding claim20, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
Combination of Parichehrehteroujeni and Hwang does not explicitly teach that further comprising: determining that a serving cell measurement reporting event is not configured at the UE; and using a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE.
Da Silva teaches that further comprising: determining that a serving cell measurement reporting event is not configured at the UE; (Da Silva, in Pargarphs [0099]-[0101] and [0526]-[0527], teaches that in Paragraphs [0099]-[0101], Although talking about measurement prediction, the measurement type is same as non-predicted measurement. To improve handover performance, UE measurement rely on the following: Periodic measurement reports and/or Event trigger measurement reports but using an early trigger, e.g. trigger condition more conservative than the condition closer to a handover, i.e. source is still good enough. In Paragraphs [0526]-[0527], to trigger measurement report, UE shall set either eventTriggered or Periodical if the corresponding reportConfig includes a reportType for each measId in the measIdList within VarMeasConfig. Therefore, it is clear that to trigger measurement report, UE shall select the measurement triggering method, either periodic or eventTriggered, based on the measurement configuration.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Da Silva to include the technique of further comprising: determining that a serving cell measurement reporting event is not configured at the UE of Da Silva in the system of combination of Parichehrehteroujeni and Hwang to provide a prediction method of mobility related information to enable a network node to figure out earlier a handover or conditional handover configuration and SCG (secondary cell group) addition, release or reconfiguration, resulting in improving the radio link robustness in wireless communication (Da Silva, see Paragraphs [0116] and [0118]).).
However, combination of Parichehrehteroujeni, Hwang, and Da Silva does not explicitly teach that using a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE.
Dhanani teaches that using a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE (Dhanani, in Paragraphs [0019] and [0021], teaches that as described in the above, to support mobility (e.g., handover or reselection) between cells and/or beams, a UE can perform periodic cell search and measurements of signal power and quality (e.g., reference signal received power, RSRP, and reference signal received quality, RSRQ) in both RRC_CONNECTED and RRC_IDLE states, instead of event-triggered measurement. In Paragraph [0019], a UE in Radio Resource Control (RRC) Idle mode monitors a reference signal received power (RSRP) of a serving cell for the UE (e.g., the currently camped serving cell). If this RSRP drops below a threshold, the UE may reselect to another serving cell of a same or different RAT (if available). In these systems, relevant threshold may be, e.g., 2*qRxLevMin, where qRxLevMin is a minimum required RSRP measurement of the current serving cell as set by a RAN node of the serving cell.
Otherwise (if another serving cell of a same or different RAT is not available), the UE declares that it is out of service (OOS) (it is also called out-of-synch). To come back into service, the UE searches for available serving cells on various RATs that meet a minimum camping threshold (which may be, e.g., the same 2*qRxLevMin threshold discussed above) in order to camp back on the network. If these conditions are not met then the UE continues to be in OOS. Another similar case to declare OOS is occurred during RRC Connected mode. A UE in RRC Connected mode stays in RRC Connected mode until it has a Radio Link Failure (RLF) and is unable to recover from the RLF. The criteria for a RLF may not align with the threshold corresponding to declaring OOS from RRC Idle mode as discussed above (e.g., the RLF criteria may not be met unless a signal measurement weaker than 2*qRxLevMin is in effect at the serving cell of the UE). Therefore, during either RRC Idle state or RRC Connected state, based on the threshold, 2*qRxLevMin, the RLF is declared either by declaring OOS in RRC Idle state with this exact threshold or by declaring RLF in RRC Connected State by about the threshold. Based on this observation, it is clear that a threshold corresponding to a minimum required receive power threshold (2*qRxLevMin) in the first cell (Serving Cell) is used as the first RSRP threshold for the non-event triggered serving cell measurement reporting configured at the UE.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, Da Silva, and Dhanani to include the technique of using a threshold corresponding to a minimum required receive power threshold in the first cell as the first reference signal received power threshold based at least in part on determining that the serving cell measurement reporting event is not configured at the UE of Dhanani in the system of combination of Parichehrehteroujeni, Hwang, and Da Silva to provide a method for a UE for initiating signaling activity with a RAN node in order to extend RRC Connected mode opportunistically or to reduce the number of transitions between RRC Connected mode and RRC Idle mode (Dhanani, see Paragraphs [0028] and [0051]-[0052]).).
Claims 8-11 and 22-25 are rejected under U.S.C. 103 as being unpatentable over Ali Parichehrehteroujeni et. al. (USPub. No.: US 20230040285 A1, hereinafter “Parichehrehteroujeni”) in a view of June Hwang et. al. (USPub. No.: US 20210274559 A1, hereinafter “Hwang”) and further in a view of Marco Belleschi et. al. (USPub. No.: US 20240163746 A1, hereinafter “Belleschi”).
Regarding claim 8, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the one or more processors are further operable to execute the code to cause the UE to: perform a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure.
Belleschi teaches that wherein the one or more processors are further operable to execute the code to cause the UE to: perform a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure (Belleschi, in Fig. 6 and 7 and in Paragrph [0160], teaches that the UE succeeds to perform handover to cell B 600 via a random access procedure in block 603. Then the source cell B 600 triggers a DAPS (Dual Active Protocol Stack) HO (Handover) for the UE that is received by the UE in block 605. The UE triggers a random access procedure
towards the target Cell C 602 in block 607, while keeping the MAC configuration with the source cell B 600 so that the UE can continue communicating with the source cell B 600. However, in this scenario, the UE does not complete the handover towards cell C 602 due to a handover failure in block 609, e.g., T304 timer expires, and as a result, the UE performs a DAPS fallback to the source cell B 600 in block. Based on this observation, it is clear that the random access procedure (Block 603) is performed in response to performing the handover procedure (DAPS HO) for the first cell (Source Cell B 600).
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, Da Silva, and Belleschi to include the technique of wherein the instructions are further executable by the processor to cause the apparatus to: perform a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 9, combination of Parichehrehteroujeni, Hwang, and Belleschi teaches the features defined in the claims 8, -refer to the indicated claim for reference(s).
Belleschi further teaches that wherein the handover procedure is a dual active protocol stack (DAPS) handover, a conditional handover (CHO), or a T312-based fast failure recovery handover (Belleschi, in Fig. 6 and 7 and in Paragrph [0160], teaches that the UE succeeds to perform handover to cell B 600 via a random access procedure in block 603. Then the source cell B 600 triggers a DAPS (Dual Active Protocol Stack) HO (Handover) for the UE that is received by the UE in block 605. The UE triggers a random access procedure towards the target Cell C 602 in block 607, while keeping the MAC configuration with the source cell B 600 so that the UE can continue communicating with the source cell B 600. Further, in Paragraph [0109], the radio link failure can be occurred with expiry of the measurement reporting associated timer T312 (not receiving the handover command from the network within this timer's duration despite sending the measurement report when T310 was running). In this observation, it is clear that the handover procedure may be DAPS handover or a T312-based fast failure recovery handover.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of wherein the handover procedure is a dual active protocol stack (DAPS) handover, a conditional handover (CHO), or a T312-based fast failure recovery handover of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 10, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the one or more processors are further operable to execute the code to cause the UE to: communicate via the second cell prior to performing the random access procedure; and receive, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command.
Belleschi teaches that wherein the one or more processors are further operable to execute the code to cause the UE to: communicate via the second cell prior to performing the random access procedure; and receive, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command (Belleschi, in Fig. 6 and 7 and in Paragraphs [0160], teaches that in Fig. 6 and 7, the UE communicates via the second cell (Cell A 604) and Cell A 604 sends the handover command to the UE. In response to the handover command, the random access procedure 603 is performed between UE and the source cell, cell B 600 (first cell). Before receiving HO command, as shown in Fig. 1 and 2, UE sends out the measurement report that may include the measurement for the second cell. Therefore, it is clear that when UE communicates via the second cell prior to performing the random access procedure and receive a handover command from the second cell based on a measurement of the second cell, UE may send RACH (random access channel) and the random access procedure is performed in the first cell in response to receiving the handover command.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of wherein the instructions are further executable by the processor to cause the apparatus to: communicate via the second cell prior to performing the random access procedure; and receive, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 11, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 1, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random access procedure in the first cell.
Belleschi teaches that wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random access procedure in the first cell (Belleschi, in Fig. 6 and 7, teaches that in Fig. 6 and 7, the Cell A 604 is a second cell and a neighbor cell and the Cell B 600 is a first cell and a source cell. As soon as a handover command from the second cell, Cell A 604, the UE communicates with a souce cell, Cell B 600 and send a RACH (Random Access Channel). Then, the source cell (first cell), Cell B 600, perform the random access procedure. Therefore, it is clear that UE communicate with a source cell (first cell) prior to perform the random procedure after receiving the handover command from the second cell (neighbor cell).
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang and Belleschi to include the technique of wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random procedure in the first cell of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 22, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that further comprising: performing a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure.
Belleschi teaches that further comprising: performing a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure (Belleschi, in Fig. 6 and 7 and in Paragrph [0160], teaches that the UE succeeds to perform handover to cell B 600 via a random access procedure in block 603. Then the source cell B 600 triggers a DAPS (Dual Active Protocol Stack) HO (Handover) for the UE that is received by the UE in block 605. The UE triggers a random access procedure towards the target Cell C 602 in block 607, while keeping the MAC configuration with the source cell B 600 so that the UE can continue communicating with the source cell B 600. However, in this scenario, the UE does not complete the handover towards cell C 602 due to a handover failure in block 609, e.g., T304 timer expires, and as a result, the UE performs a DAPS fallback to the source cell B 600 in block. Based on this observation, it is clear that the random access procedure (Block 603) is performed in response to performing the handover procedure (DAPS HO) for the first cell (Source Cell B 600).
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of further comprising: performing a handover procedure for the first cell, wherein the random access procedure is performed in response to performing the handover procedure of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 23, combination of Parichehrehteroujeni, Hwang, and Belleschi teaches the features defined in the claims 22, -refer to the indicated claim for reference(s).
Belleschi further teaches that wherein the handover procedure is a dual active protocol stack (DAPS) handover, a conditional handover (CHO), or a T312-based fast failure recovery handover (Belleschi, in Fig. 6 and 7 and in Paragrph [0160], teaches that the UE succeeds to perform handover to cell B 600 via a random access procedure in block 603. Then the source cell B 600 triggers a DAPS (Dual Active Protocol Stack) HO (Handover) for the UE that is received by the UE in block 605. The UE triggers a random access procedure towards the target Cell C 602 in block 607, while keeping the MAC configuration with the source cell B 600 so that the UE can continue communicating with the source cell B 600. Further, in Paragraph [0109], the radio link failure can be occurred with expiry of the measurement reporting associated timer T312 (not receiving the handover command from the network within this timer's duration despite sending the measurement report when T310 was running). In this observation, it is clear that the handover procedure may be DAPS handover or a T312-based fast failure recovery handover.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of wherein the handover procedure is a dual active protocol stack (DAPS) handover, a conditional handover (CHO), or a T312-based fast failure recovery handover of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 24, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that further comprising: communicating via the second cell prior to performing the random access procedure; and receiving, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command.
Belleschi teaches that further comprising: communicating via the second cell prior to performing the random access procedure; and receiving, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command (Belleschi, in Fig. 6 and 7 and in Paragraphs [0160], teaches that in Fig. 6 and 7, the UE communicates via the second cell (Cell A 604) and Cell A 604 sends the handover command to the UE. In response to the handover command, the random access procedure 603 is performed between UE and the source cell, cell B 600 (first cell). Before receiving HO command, as shown in Fig. 1 and 2, UE sends out the measurement report that may include the measurement for the second cell. Therefore, it is clear that when UE communicates via the second cell prior to performing the random access procedure and receive a handover command from the second cell based on a measurement of the second cell, UE may send RACH (random access channel) and the random access procedure is performed in the first cell in response to receiving the handover command.
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of further comprising: communicating via the second cell prior to performing the random access procedure; and receiving, from the second cell based at least in part on a measurement of the second cell, a handover command, wherein the random access procedure is performed in the first cell in response to receiving the handover command of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Regarding claim 25, combination of Parichehrehteroujeni and Hwang teaches the features defined in the claims 15, -refer to the indicated claim for reference(s).
However, combination of Parichehrehteroujeni and Hwang does not explicitly teach that wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random access procedure in the first cell.
Belleschi teaches that wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random access procedure in the first cell (Belleschi, in Fig. 6 and 7, teaches that in Fig. 6 and 7, the Cell A 604 is a second cell and a neighbor cell and the Cell B 600 is a first cell and a source cell. As soon as a handover command from the second cell, Cell A 604, the UE communicates with a souce cell, Cell B 600 and send a RACH (Random Access Channel). Then, the source cell (first cell), Cell B 600, perform the random access procedure. Therefore, it is clear that UE communicate with a source cell (first cell) prior to perform the random procedure after receiving the handover command from the second cell (neighbor cell).
It would have been obvious for one of ordinary skill in the art, before the effective filing date of the claimed invention, to combine Parichehrehteroujeni, Hwang, and Belleschi to include the technique of wherein the second cell is a neighbor cell and the UE communicates with a source cell prior to performing the random access procedure in the first cell of Belleschi in the system of combination of Parichehrehteroujeni and Hwang to provide an efficient method not only for UE to reflect the scenario of RLF (Radio Link Failure) after DAPS fallback in RLF-Report but also for a network node to unambiguously distinguish with the same RLF-report which parameters/information are associated to the RLF after DAPA fallback case for the handover between a first cell and a second cell and which parameters are associated to the previous handover from another cell to the first cell. (Belleschi, see Paragraph [0141]).).
Conclusion
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/JAEYOUNG KWAK/Examiner, Art Unit 2472
/KEVIN T BATES/Supervisory Patent Examiner, Art Unit 2472
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