DETAILED ACTION
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 .
Information Disclosure Statement
The information disclosure statements (IDS) submitted on August 23, and 30, 2024 have been considered by the Examiner and made of record in the application file.
Claim Rejections - 35 USC § 102
The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action:
A person shall be entitled to a patent unless –
(a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention.
Claims 1, 3-12, 14-32 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Agiwal et al. (US 2020/0260500, “Agiwal”).
Regarding claim 1, Agiwal teaches a method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI) ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding”);
receiving, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, a random access response that is scheduled by DCI identified by an RNTI associated with the two-step random access procedure and different from the C-RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” Note: C-RNTI and TC-RNTI are two different parameters); and
causing, based on the receiving the random access response, transmission of a contention resolution identifier parameter ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 3, Agiwal teaches claim 1 and further teaches wherein the causing transmission of the contention resolution identifier parameter comprises causing a Msg3 transmission that comprises the contention resolution identifier parameter ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 4, Agiwal teaches claim 1 and further teaches wherein the transmission of the preamble and the C-RNTI comprises a Msg A transmission ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding.”)
Regarding claim 5, Agiwal teaches claim 1 and further teaches wherein the DCI that is identified by the C-RNTI comprises at least one of: a timing advance command; an uplink grant; a temporary C-RNTI; or a reserve bit ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant”).
Regarding claim 6, Agiwal teaches claim 1 and further teaches determining, based on the DCI identified by the RNTI, to fall back from a two-step random access procedure to a four-step random access procedure, wherein the causing transmission of the contention resolution identifier parameter is associated with the four-step random access procedure ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 7, Agiwal teaches claim 1 and further teaches comprising: causing, by the wireless device, second transmission of: a preamble; and the C-RNTI; monitoring for a response to the second transmission; and determining, based on receiving a response to the second transmission that is identified by the C-RNTI, successful completion of a two-step random access procedure ([0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 8, Agiwal teaches claim 1 and further teaches starting, based on the causing transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on the DCI identified by the RNTI, the random access response time window ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 9, Agiwal teaches claim 1 and further teaches further comprising: based on the DCI identified by the RNTI, stopping monitoring ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.”)
Regarding claim 10, Agiwal teaches claim 1 and further teaches monitoring for the random access response that is scheduled the DCI that is identified by the RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”).
Regarding claim 11, Agiwal teaches claim 1 and further teaches wherein the RNTI associated with the two-step random access response is different from an RNTI associated with a four-step random access response ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”. C-RNTI and TC-RNTI are two different parameters).
Regarding claim 12, Agiwal teaches a wireless device comprising: one or more processors; and memory storing instructions, that when executed by the one or more processors (FIG. 20, terminal 2000, [0352]), cause the wireless device to:
cause transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI) ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding”);
receive, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, a random access response that is scheduled by DCI identified by an RNTI associated with the two-step random access procedure and different from the C-RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” Note: C-RNTI and TC-RNTI are two different parameters); and
cause, based on receiving the random access response, transmission of a contention resolution identifier parameter ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 14, Agiwal teaches claim 12 and further teaches to cause transmission of the contention resolution identifier parameter by causing a Msg3 transmission that comprises the contention resolution identifier parameter ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 15, Agiwal teaches claim 12 and further teaches wherein the transmission of the preamble and the C-RNTI comprises a Msg A transmission ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding.”)
Regarding claim 16, Agiwal teaches claim 12 and further teaches to determine, based on the DCI identified by the RNTI, to fall back from a two-step random access procedure to a four-step random access procedure, wherein causing transmission of the contention resolution identifier parameter is associated with the four-step random access procedure ([0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260.” [0061] “… the UE's contention resolution identity (first X bits of common control channel (CCCH) service data unit (SDU) transmitted in the Msg3).”)
Regarding claim 17, Agiwal teaches claim 12 and further teaches to: cause second transmission of: a preamble; and the C-RNTI; monitor for a response to the second transmission; and determine, based on receiving a response to the second transmission that is identified by the C-RNTI, successful completion of a two-step random access procedure ([0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 18, Agiwal teaches claim 12 and further teaches to monitor for the random access response that is scheduled by the DCI that is identified by the RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”).
Regarding claim 19, Agiwal teaches claim 12 and further teaches to: start, based on causing transmission of the preamble and the C-RNTI, a random access response time window; and stop, based on the DCI identified by the RNTI, the random access response time window ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 20, Agiwal teaches claim 12 and further teaches to stop monitoring based on the DCI identified by the RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.”)
Regarding claim 21, Agiwal teaches a method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI) ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding”);
receiving, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, DCI identified by the C-RNTI ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.” [0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”); and
sending data using an uplink grant indicated by the received DCI identified by the C-RNTI ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.” [00138] “If the msgB includes an HARQ process ID other than zero, the UE 1001 discards the msgA payload. The UE 1001 transmits a new MAC PDU in the UL grant received in the msgB”).
Regarding claim 22, Agiwal teaches claim 21, and further teaches determining, based on the received DCI that is identified by the C-RNTI, the successful completion of the two-step random access procedure ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.”)
Regarding claim 23, Agiwal teaches claim 21, and further teaches wherein the DCI that is identified by the RNTI is associated with a Msg B reception ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.”)
Regarding claim 24, Agiwal teaches claim 21, and further teaches wherein the received DCI that is identified by the C-RNTI comprises at least one of: a timing advance command; an uplink grant; a temporary C-RNTI; or a reserve bit ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.” [0102] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 includes a RAPID, a TA command, a UL grant, a C-RNTI of the UE 801 (which transmitted the msgA) in the msgB.” [0103] “If the gNB 803 only receives the PRACH preamble but fails to receive the msgA payload, the gNB 80-3 includes the RAPID, the TA command, the UL grant and a temporary C-RNTI (a TC-RNTI) in the msgB.”)
Regarding claim 25, Agiwal teaches claim 21, and further teaches starting, based on causing the transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on the received DCI that is identified by the C-RNTI, the random access response time window ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 26, Agiwal teaches claim 21, and further teaches monitoring for the DCI that is identified by the C-RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”
Regarding claim 27, Agiwal teaches claim 21, and further teaches stopping monitoring for the random access response based on the received DCI that is identified by the C-RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 28, Agiwal teaches a wireless device comprising: one or more processors; and memory storing instructions, that when executed by the one or more processors (FIG. 20, terminal 2000, [0352]), cause the wireless device to:
cause transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI) ([0146] The UE transmits a PRACH preamble in a PRACH occasion and an msgA payload (or an msgA MAC PDU) in a PUSCH resource/occasion in step 1210. [0068] “The MsgA payload may include one or more of a CCCH SDU, a dedicated control channel (DCCH) SDU, a dedicated traffic channel (DTCH) SDU, a buffer status report (BSR) MAC control element (CE), a power headroom report (PHR) a MAC CE, synchronization signal block (SSB) information, a C-RNTI MAC CE, or padding”);
receive, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, DCI identified by the C-RNTI ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.” [0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”); and
send data using an uplink grant indicated by the received DCI identified by the C-RNTI ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.” [00138] “If the msgB includes an HARQ process ID other than zero, the UE 1001 discards the msgA payload. The UE 1001 transmits a new MAC PDU in the UL grant received in the msgB”).
Regarding claim 29, Agiwal teaches claim 28, and further teaches cause the wireless device to determine, based on the received DCI that is identified by the C-RNTI, the successful completion of the two-step random access procedure ([0105] “If the gNB 803 receives the msgA (i.e., both the PRACH preamble and the msgA payload) successfully, the gNB 803 transmits a PDCCH addressed to a C-RNTI of the UE 801 (which transmitted the msgA), wherein the PDCCH may schedule a UL grant for a new transmission or the PDCCH may include a DL assignment. Upon receiving the PDCCH, the random access procedure is successfully completed.”)
Regarding claim 30, Agiwal teaches claim 28, and further teaches to: start, based on causing the transmission of the preamble and the C-RNTI, a random access response time window; and stop, based on the received DCI that is identified by the C-RNTI, the random access response time window ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
Regarding claim 31, Agiwal teaches claim 28, and further teaches to monitor for the DCI that is identified by the C-RNTI. ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250”
Regarding claim 32, Agiwal teaches claim 28, and further teaches to stop monitoring for the random access response based on the received DCI that is identified by the C-RNTI ([0147] “After transmitting the msgA, the UE starts a msgB-ResponseWindow and monitors a PDCCH for a random access response (i.e., the msgB) in an msgB-ResponseWindow. The UE monitors a PDCCH of an SpCell for a random access response identified by an MSGB-RNTI while the msgB-ResponseWindow is running. If a C-RNTI MAC CE was included in the msgA payload, the UE additionally monitors the PDCCH of the SpCell for a random access response identified by the C-RNTI while the msgB-ResponseWindow is running.” [0148] “If the UE receives the msgB in step 1230, and the msgB includes fallback information, i.e., a RAPID, a TA, a TC-RNTI and a UL grant and the RAPID in the fallback information matches the random access preamble index of the PRACH preamble transmitted by the UE in step 1240, the UE prepares an msg3 MAC PDU using contents of the msgA MAC PDU and transmits the msg3 MAC PDU in the UL grant received in the msgB in step 1260. Otherwise, if the msgB does not include fallback information and the RA procedure is successfully completed upon receiving the msgB, the UE discards the msgA payload in steps 1240 and 1250.” [0067] “If the window in which the UE 101 monitors for a network response after transmitting the MsgA expires and the UE 101 has not received the MsgB including contention resolution information or fallback information as described above, the UE 101 goes back to the first step 110 and transmits the MsgA.”)
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.
The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows:
1. Determining the scope and contents of the prior art.
2. Ascertaining the differences between the prior art and the claims at issue.
3. Resolving the level of ordinary skill in the pertinent art.
4. Considering objective evidence present in the application indicating obviousness or nonobviousness.
This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention.
Claims 2 and 13 are rejected under 35 U.S.C. 103 as being unpatentable over Agiwal in view of Chen et al. (US 2020/0146069, “Chen”).
Regarding claim 2, Agiwal teaches claim 1 but fails to teach wherein the causing transmission of the contention resolution identifier parameter is further based on the random access response not comprising the contention resolution identifier parameter
Chen teaches wherein the causing transmission of the contention resolution identifier parameter is further based on the random access response not comprising the contention resolution identifier parameter ([0092] “In some of the present implementations, the UE may transmit a Msg3 (e.g., for re-sending the content in MsgA payload) using the UL grant received in the MsgB in order to perform a fallback mechanism from a 2-step RA procedure to a 4-step RA procedure, based on a response for fallback indication associated with the sent MsgA, or based on other information (successfully) received in the MsgB (e.g., when Temporary C-RNTI is included, or when Contention Resolution ID is not included).”)
It would have been obvious before the effective filing date of the claimed invention for a person having ordinary skill in the art to include the feature wherein the causing transmission of the contention resolution identifier parameter is further based on the random access response not comprising the contention resolution identifier parameter, to resolve the issue with contention resolution unsuccessful in two-step random access.
Regarding claim 13, Agiwal teaches claim 12 but fails to teach to cause transmission of the contention resolution identifier parameter based on the random access response not comprising the contention resolution identifier parameter
Chen teaches to cause transmission of the contention resolution identifier parameter based on the random access response not comprising the contention resolution identifier parameter ([0092] “In some of the present implementations, the UE may transmit a Msg3 (e.g., for re-sending the content in MsgA payload) using the UL grant received in the MsgB in order to perform a fallback mechanism from a 2-step RA procedure to a 4-step RA procedure, based on a response for fallback indication associated with the sent MsgA, or based on other information (successfully) received in the MsgB (e.g., when Temporary C-RNTI is included, or when Contention Resolution ID is not included).”)
It would have been obvious before the effective filing date of the claimed invention for a person having ordinary skill in the art to include the feature to cause transmission of the contention resolution identifier parameter based on the random access response not comprising the contention resolution identifier parameter, to resolve the issue with contention resolution unsuccessful in two-step random access.
Double Patenting
The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory obviousness-type double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969).
A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or
1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the conflicting application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement.
Effective January 1, 1994, a registered attorney or agent of record may sign a terminal disclaimer. A terminal disclaimer signed by the assignee must fully comply with 37 CFR 3.73(b).
Claims 1, 2, and 4-11 and 21-27 are provisionally rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1, 3, 5-12, and 14-18 of Patent No. 11,985,706. Although the conflicting claims are not identical, they are not patentably distinct from each other because claims of the instant application are broader.
Application 18/625,682
Patent 11,985,706
1. A method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI);
receiving, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, a random access response that is scheduled by DCI identified by an RNTI associated with the two-step random access procedure and different from the C-RNTI; and
causing, based on the receiving the random access response, transmission of a contention resolution identifier parameter.
2. The method of claim 1, wherein the causing transmission of the contention resolution identifier parameter is further based on the random access response not comprising the contention resolution identifier parameter.
4. The method of claim 1, wherein the transmission of the preamble and the C-RNTI comprises a Msg A transmission.
5. The method of claim 1, wherein the DCI that is identified by the C-RNTI comprises at least one of: a timing advance command; an uplink grant; a temporary C-RNTI; or a reserve bit.
6. The method of claim 1, further comprising: determining, based on the DCI identified by the RNTI, to fall back from a two-step random access procedure to a four-step random access procedure, wherein the causing transmission of the contention resolution identifier parameter is associated with the four-step random access procedure.
7. The method of claim 1, further comprising: causing, by the wireless device, second transmission of: a preamble; and the C-RNTI; monitoring for a response to the second transmission; and determining, based on receiving a response to the second transmission that is identified by the C-RNTI, successful completion of a two-step random access procedure.
8. The method of claim 1, further comprising: starting, based on the causing transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on the DCI identified by the RNTI, the random access response time window.
9. The method of claim 1, further comprising: based on the DCI identified by the RNTI, stopping monitoring.
10. The method of claim 1, further comprising monitoring for the random access response that is scheduled the DCI that is identified by the RNTI.
11. The method of claim 1, wherein the RNTI associated with the two-step random access response is different from an RNTI associated with a four-step random access response.
21. A method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI);
receiving, while monitoring for downlink control information (DCI) that is identified by the C-RNTI for indication of a successful completion of a two-step random access procedure, DCI identified by the C-RNTI; and
sending data using an uplink grant indicated by the received DCI identified by the C-RNTI.
22. The method of claim 21, further comprising determining, based on the received DCI that is identified by the C-RNTI, the successful completion of the two-step random access procedure.
23. The method of claim 21, wherein the DCI that is identified by the RNTI is associated with a Msg B reception.
24. The method of claim 21, wherein the received DCI that is identified by the C-RNTI comprises at least one of: a timing advance command; an uplink grant; a temporary C-RNTI; or a reserve bit.
25. The method of claim 21, further comprising: starting, based on causing the transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on the received DCI that is identified by the C-RNTI, the random access response time window.
26. The method of claim 21, further comprising monitoring for the DCI that is identified by the C-RNTI.
27. The method of claim 21, further comprising: stopping monitoring for the random access response based on the received DCI that is identified by the C-RNTI.
1. A method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI);
monitoring for a random access response to the transmission, wherein: a received random access response that is scheduled by received downlink control information (DCI) identified by a radio network temporary identifier (RNTI) associated with a two-step random access procedure and that comprises an identifier of a preamble indicates proceeding with a transmission associated with a contention resolution procedure; and received DCI that is identified by the C-RNTI indicates successful completion of a two-step random access procedure; and
based on receiving a random access response that is scheduled by received DCI identified by the RNTI associated with a two-step random access procedure and that comprises the identifier of the preamble, causing transmission of a contention resolution identifier parameter.
3. The method of claim 1, wherein the causing transmission of the contention resolution identifier parameter is further based on the random access response not comprising the contention resolution identifier parameter.
5. The method of claim 1, wherein the transmission of the preamble and the C-RNTI comprises a Msg A transmission.
6. The method of claim 1, wherein the received DCI that is identified by the C-RNTI consists of at least one of each of: a timing advance command; an uplink grant; a temporary C-RNTI; and a reserve bit.
7. The method of claim 1, further comprising: determining, based on the received DCI that is identified by the RNTI, to fall back from a two-step random access procedure to a four-step random access procedure, wherein the causing transmission of the contention resolution identifier parameter is associated with the four-step random access procedure.
8. The method of claim 1, further comprising: causing, by the wireless device, second transmission of: a preamble; and the C-RNTI; monitoring for a response to the second transmission; and determining, based on receiving a response to the second transmission that is identified by the C-RNTI, successful completion of a two-step random access procedure.
9. The method of claim 1, further comprising: starting, based on causing transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on received DCI that is identified by the RNTI associated with the random access response, the random access response time window.
10. The method of claim 1, further comprising: stopping the monitoring of the random access response based on received DCI that is identified by the C-RNTI; or stopping the monitoring of the random access response based on received DCI that is identified by the RNTI.
11. The method of claim 1, wherein the RNTI associated with the random access response is different from an RNTI associated with a four-step random access response.
12. A method comprising:
causing, by a wireless device, transmission of: a preamble; and a cell-radio network temporary identifier (C-RNTI), wherein the transmission of the preamble and the C-RNTI comprises a Msg A transmission;
monitoring for a random access response to the transmission, wherein: a received random access response that is scheduled by received downlink control information (DCI) identified by a radio network temporary identifier (RNTI) associated with a two-step random access procedure and that comprises an identifier of the preamble indicates proceeding with a transmission associated with a contention resolution procedure; and received DCI that is identified by the C-RNTI indicates successful completion of a two-step random access procedure; and
sending data using an uplink grant in the received DCI that is identified by the C-RNTI.
14. The method of claim 12, further comprising determining, based on the received DCI that is identified by the C-RNTI, the successful completion of the two-step random access procedure.
15. The method of claim 12, wherein the received DCI that is identified by the RNTI is associated with a Msg B reception.
16. The method of claim 12, wherein the received DCI that is identified by the C-RNTI consists of at least one of each of: a timing advance command; an uplink grant; a temporary C-RNTI; and a reserve bit.
17. The method of claim 12, further comprising: starting, based on causing the transmission of the preamble and the C-RNTI, a random access response time window; and stopping, based on the received DCI that is identified by the C-RNTI, the random access response time window.
18. The method of claim 12, further comprising: stopping the monitoring of the random access response based on the received DCI that is identified by the C-RNTI; or stopping the monitoring of the random access response based on received DCI that is identified by the RNTI.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure.
InterDigital Communications, “2-Step Random Access Procedure in NR”, 3GPP TSG-RAN WG2 NR Ad Hoc, R2-1700237, 2017, 3 pages.
Asustek, MediaTek Inc., “Consideration on use cases of 2-step RACH procedure”, 3GPP TSG-RAN WG2 Meeting #NR Ad Hoc, R2-1700356, 2017, 4 pages.
Futaki (US 2021/0385867) discloses a procedure to fallback to 4-step random access procedure from 2-step procedure.
Agiwal et al. (US 2018/0103465) discloses random access procedures. At least embodiments of FIGs. 7-10 teach two-step to four-step fall back methods for a RA.
Any inquiry concerning this communication or earlier communications from the examiner should be directed to QUOC THAI NGOC VU whose telephone number is (571)270-5901. The examiner can normally be reached M-F, 9:30AM-6:00PM.
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/QUOC THAI N VU/ Primary Examiner, Art Unit 2642
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