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Last updated: April 17, 2026
Application No. 18/553,353

AIR-TO-GROUND DEDICATED RANDOM ACCESS CHANNEL CONFIGURATION DESIGN FOR WIRELESS AIR-TO-GROUND COMMUNICATIONS

Non-Final OA §103
Filed
Sep 29, 2023
Examiner
NGUYEN, LIEM HONG
Art Unit
2416
Tech Center
2400 — Computer Networks
Assignee
qualcomm Incorporated
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
2y 12m
To Grant
96%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allow Rate
158 granted / 222 resolved
+13.2% vs TC avg
Strong +25% interview lift
Without
With
+25.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
31 currently pending
Career history
253
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
56.2%
+16.2% vs TC avg
§102
21.0%
-19.0% vs TC avg
§112
19.0%
-21.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 222 resolved cases

Office Action

§103
DETAILED ACTION This communication is responsive to Application No. #18/553353 filed on September 29, 2023. Claims 1-28 are subject to examination. 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 . Allowable Subject Matter Claims 15-22 are allowed. Claims 9-12 and 14 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: Regarding claims 9-12 and 14-22, none of the art cited discloses the comparison of configuration parameter indication related to occasions/resources between air-to-ground (ATG) RACH configuration and legacy RACH configuration. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied 23upon, and the rationale supporting the rejection, would be the same under either status. 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 1-2, 4, 13, 23-24, and 26 are rejected under 35 U.S.C. 103 as being unpatentable over Shrestha et.al. (US Patent Application Publication, 20210251012, hereinafter, “Shrestha”) in view of Shao et.al. (Chinese Patent Application Publication, 20230268983, hereinafter, “Shao”). Regarding claim 1, Shrestha teaches: A user equipment (UE) for wireless communication, comprising (Shrestha: [0094] FIG. 4 illustrates an example of a non-terrestrial network that supports random access procedures for non-terrestrial networks, in accordance with one or more aspects of the present disclosure ... The UE 115-b communicates with the non-terrestrial base station 105b via wireless communications links 335.): a memory; and one or more processors, coupled to the memory, configured to (Shrestha: [0085] Controller/processor 240 of base station 105, controller/processor 280 of UE 115, and/or any other component(s) of FIG. 2 may perform one or more techniques associated with random access procedures, as described in more detail elsewhere. For example, controller/processor 240 of base station 105, controller/processor 280 of UE 115, and/or any other component(s) of FIG. 2 may perform or direct operations of, for example, the methods 1200, 1300 of FIGS. 12 and 13 and/or other processes as described. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively ... Fig. 2): receive, from a base station, an indication of an air-to-ground (ATG) dedicated random access channel (RACH) configuration (Shrestha: [0095] .. . Enhancements are desired for NR non-terrestrial networks, especially those with nodes in low earth orbit (LEO), medium Earth orbit (MEO) and geostationary orbit (GEO). Such enhancements may also be compatible with high altitude platform station (HAPS) and air-to-ground (ATG) scenarios … [0096] Aspects of the present disclosure provide techniques to align random access channel (RACH) occasions between the UE and the network node (e.g., eNB/gNB (also referred to as a base station)). Random access is a procedure for establishing a connection between a UE and a base station. During a random access procedure, a UE transmits a preamble via a RACH to a base station to initiate establishment of a connection. Upon receiving the preamble, the base station schedules uplink resources for the UE and assigns the resources in a random access response (RAR) [i.e., RACH configuration].); and communicate with the base station based at least in part on the uplink grant of the RAR (Shrestha: [0097] … One or more examples include address uplink (UL) grant handling in the RAR (e.g., message two (Msg2) of the random access procedure) where in one example, the RAR includes an uplink grant. In this example, message three (Msg3) of the random access procedure may be transmitted based on the uplink grant of the RAR [i.e., dedicated RACK config].). Although Shrestha teaches an UE receiving an uplink grant from a base station during random access procedure, including in air-to-ground (ATG) scenarios, Shrestha does not explicitly teach dedicated access grant for ATG UE; i.e.,: communicate with the UE based at least in part on the ATG dedicated RACH configuration. However, in the same field of endeavor, Shao teaches: communicate with the UE based at least in part on the ATG dedicated RACH configuration (Shrestha: [0097] … One or more examples include address uplink (UL) grant handling in the RAR (e.g., message two (Msg2) of the random access procedure) where in one example, the RAR includes an uplink grant. In this example, message three (Msg3) of the random access procedure may be transmitted based on the uplink grant of the RAR [i.e., dedicated RACK config].) (Shao: [0092] In an ATG communications system, ground ATG base stations and an ATG terminal (e.g., CPE type) communicate with each other, and user equipment (UE) of passengers onboard the plane are connected to the ATG terminal via WiFi, thus the ATG terminal needs to report a terminal type, and the network side issues an access grant indication according to the terminal type, to grant the ATG terminal the access to the ATG base station, and prevent ground terminals (e.g., NR UE) and terminals (e.g., NR UE) of passengers onboard the plane from accessing the ATG base station [i.e., dedicated ATG config].). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha to include the features as taught by Shao above in order to suppress interferences caused by the ATG communications network. (Shao, ¶ [0010]). Regarding claim 23, Shrestha teaches: A base station for wireless communication, comprising (Shrestha: [0094] FIG. 4 illustrates an example of a non-terrestrial network that supports random access procedures for non-terrestrial networks, in accordance with one or more aspects of the present disclosure ... The UE 115-b communicates with the non-terrestrial base station 105b via wireless communications links 335.): a memory; and one or more processors, coupled to the memory, configured to (Shrestha: [0085] Controller/processor 240 of base station 105, controller/processor 280 of UE 115, and/or any other component(s) of FIG. 2 may perform one or more techniques associated with random access procedures, as described in more detail elsewhere. For example, controller/processor 240 of base station 105, controller/processor 280 of UE 115, and/or any other component(s) of FIG. 2 may perform or direct operations of, for example, the methods 1200, 1300 of FIGS. 12 and 13 and/or other processes as described. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively ... Fig. 2): transmit, to a user equipment (UE), an indication of an air-to-ground (ATG) dedicated random access channel (RACH) configuration (Shrestha: [0095] .. . Enhancements are desired for NR non-terrestrial networks, especially those with nodes in low earth orbit (LEO), medium Earth orbit (MEO) and geostationary orbit (GEO). Such enhancements may also be compatible with high altitude platform station (HAPS) and air-to-ground (ATG) scenarios … [0096] Aspects of the present disclosure provide techniques to align random access channel (RACH) occasions between the UE and the network node (e.g., eNB/gNB (also referred to as a base station)). Random access is a procedure for establishing a connection between a UE and a base station. During a random access procedure, a UE transmits a preamble via a RACH to a base station to initiate establishment of a connection. Upon receiving the preamble, the base station schedules uplink resources for the UE and assigns the resources in a random access response (RAR) [i.e., RACH configuration].); and communicate with the UE based at least in part on the uplink grant of the RAR (Shrestha: [0097] … One or more examples include address uplink (UL) grant handling in the RAR (e.g., message two (Msg2) of the random access procedure) where in one example, the RAR includes an uplink grant. In this example, message three (Msg3) of the random access procedure may be transmitted based on the uplink grant of the RAR [i.e., dedicated RACK config].). Although Shrestha teaches an UE receiving an uplink grant from a base station during random access procedure, including in air-to-ground (ATG) scenarios, Shrestha does not explicitly teach dedicated access grant for ATG UE; i.e.,: communicate with the base station based at least in part on the ATG dedicated RACH configuration. However, in the same field of endeavor, Shao teaches: communicate with the base station based at least in part on the ATG dedicated RACH configuration (Shao: [0092] In an ATG communications system, ground ATG base stations and an ATG terminal (e.g., CPE type) communicate with each other, and user equipment (UE) of passengers onboard the plane are connected to the ATG terminal via WiFi, thus the ATG terminal needs to report a terminal type, and the network side issues an access grant indication according to the terminal type, to grant the ATG terminal the access to the ATG base station, and prevent ground terminals (e.g., NR UE) and terminals (e.g., NR UE) of passengers onboard the plane from accessing the ATG base station [i.e., dedicated ATG config].). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha to include the features as taught by Shao above in order to suppress interferences caused by the ATG communications network. (Shao, ¶ [0010]). Regarding claims 2 and 24, Shrestha-Shao discloses on the features with respect to claims 1 and 23 as outlined above. Shao further teaches: wherein the one or more processors, to receive the indication of the ATG dedicated RACH configuration, are configured to receive the indication of the ATG dedicated RACH configuration based at least in part on an identification of a type of the UE (Shao: [0092] In an ATG communications system, ground ATG base stations and an ATG terminal (e.g., CPE type) communicate with each other, and user equipment (UE) of passengers onboard the plane are connected to the ATG terminal via WiFi, thus the ATG terminal needs to report a terminal type, and the network side issues an access grant indication according to the terminal type, to grant the ATG terminal the access to the ATG base station, and prevent ground terminals (e.g., NR UE) and terminals (e.g., NR UE) of passengers onboard the plane from accessing the ATG base station.). The rationale and motivation for adding this teaching of Shao is the same as the rationale and motivation for claims 1 and 23. Regarding claims 4 and 26, Shrestha-Shao discloses on the features with respect to claims 1 and 23 as outlined above. Shao further teaches: wherein the one or more processors are further configured to determine that the base station is a New Radio-ATG specific base station, wherein the one or more processors, to receive the indication of the ATG dedicated RACH configuration, are configured to receive the indication of the ATG dedicated RACH configuration based at least in part on determining that the base station is a New Radio-ATG specific base station (Shao: [0092] In an ATG communications system, ground ATG base stations and an ATG terminal (e.g., CPE type) communicate with each other, and user equipment (UE) of passengers onboard the plane are connected to the ATG terminal via WiFi, thus the ATG terminal needs to report a terminal type, and the network side issues an access grant indication according to the terminal type, to grant the ATG terminal the access to the ATG base station, and prevent ground terminals (e.g., NR UE) and terminals (e.g., NR UE) of passengers onboard the plane from accessing the ATG base station.). The rationale and motivation for adding this teaching of Shao is the same as the rationale and motivation for claims 1 and 23. Regarding claim 13, Shrestha-Shao discloses on the features with respect to claim 1 as outlined above. Shrestha further teaches: wherein the one or more processors, to communicate with the base station, are configured to transmit a RACH preamble based at least in part on the ATG dedicated RACH configuration (Shrestha: [0096] Aspects of the present disclosure provide techniques to align random access channel (RACH) occasions between the UE and the network node (e.g., eNB/gNB (also referred to as a base station)). Random access is a procedure for establishing a connection between a UE and a base station. During a random access procedure, a UE transmits a preamble via a RACH to a base station to initiate establishment of a connection. Upon receiving the preamble, the base station schedules uplink resources for the UE and assigns the resources in a random access response (RAR) [i.e., RACH configuration].). Claims 3, 5-7, 25, and 27 are rejected under 35 U.S.C. 103 as being unpatentable over Shrestha-Shao in view of Wang et.al. (US Patent Application Publication, 20220393957, hereinafter, “Wang”). Regarding claims 3 and 25, Shrestha-Shao discloses on the features with respect to claims 2 and 24 as outlined above. Shrestha-Shao does not explicitly teach: wherein the type of the UE is an aircraft type. However, in the same field of endeavor, Wang teaches: wherein the type of the UE is an aircraft type (Wang: [0169] ... The ATG communication system includes an air-to-ground ATG network device and a terminal. The ATG network device includes a terrestrial base station, and the terminal includes a high-altitude mobile terminal, for example, a high-altitude airplane … Fig. 8). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha-Shao to include the features as taught by Wang above in order to improve accuracy of the Timing Advance. (Wang, ¶ [0005]). Regarding claim 5, Shrestha-Shao discloses on the features with respect to claim 4 as outlined above. Shrestha-Shao does not explicitly teach: wherein the one or more processors, to determine that the base station is a New Radio-ATG specific base station, are configured to receive system information that indicates that the base station is a New Radio-ATG specific base station. However, in the same field of endeavor, Wang teaches: wherein the one or more processors, to determine that the base station is a New Radio-ATG specific base station, are configured to receive system information that indicates that the base station is a New Radio-ATG specific base station (Wang: [0255] Manner 1: A network device may carry parameters such … ATG reference point coordinates of a target cell/beam in broadcast information such as a SIB1, OSI, an MIB, or the like, and the network device sends the broadcast information to a terminal in a unicast, broadcast, or multicast manner.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha-Shao to include the features as taught by Wang above in order to improve accuracy of the Timing Advance. (Wang, ¶ [0005]). Regarding claim 6, Shrestha-Shao-Wang discloses on the features with respect to claim 5 as outlined above. Wang further teaches: wherein the one or more processors, to receive the system information, are configured to receive at least one of a master information block or a system information block (Wang: [0255] Manner 1: A network device may carry parameters such as a service link common timing advance value/service link reference point coordinates, a common compensation timing advance value/compensation reference point coordinates, and ATG reference point coordinates of a target cell/beam in broadcast information such as a SIB1, OSI, an MIB, or the like, and the network device sends the broadcast information to a terminal in a unicast, broadcast, or multicast manner.). The rationale and motivation for adding this teaching of Wang is the same as the rationale and motivation for Claim 5. Regarding claims 7 and 27, Shrestha-Shao discloses on the features with respect to claims 1 and 23 as outlined above. Shrestha-Shao does not explicitly teach: wherein the one or more processors, to receive the indication of the ATG dedicated RACH configuration, are configured to receive one or more ATG dedicated RACH configuration parameters, the one or more ATG dedicated RACH configuration parameters comprising at least one of: an ATG dedicated RACH common configuration parameter, or an ATG dedicated RACH generic configuration parameter. However, in the same field of endeavor, Wang teaches: wherein the one or more processors, to receive the indication of the ATG dedicated RACH configuration, are configured to receive one or more ATG dedicated RACH configuration parameters, the one or more ATG dedicated RACH configuration parameters comprising at least one of an ATG dedicated RACH generic configuration parameter (Wang: [0334] Example 3: The network side may send a common compensation timing advance value to the terminal by using a random access generic configuration (RACH-ConfigGeneric) parameter, to enable the terminal to obtain an accurate TA value and apply to access a communication system. TA-common is used to represent the common compensation timing advance value.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha-Shao to include the features as taught by Wang above in order to improve accuracy of the Timing Advance. (Wang, ¶ [0005]). Claims 8 and 28 are rejected under 35 U.S.C. 103 as being unpatentable over Shrestha-Shao-Wang in view of Ke et.al. (Chinese Patent Application Publication, CN112449439A, hereinafter, “Ke”). Regarding claims 8 and 28, Shrestha-Shao discloses on the features with respect to claims 7 and 27 as outlined above. Shrestha-Shao-Wang does not explicitly teach: wherein the one or more ATG dedicated RACH configuration parameters indicate one or more ATG dedicated RACH occasions. However, in the same field of endeavor, Ke teaches: wherein the one or more ATG dedicated RACH configuration parameters indicate one or more ATG dedicated RACH occasions (Ke: [n0307] In this embodiment of the invention, each airway and/or air route within the airspace covered by the network-side device corresponds to a second random access resource set, that is, the network-side device allocates a second random access resource set to each airway and/or air route within its airspace coverage area … [n0312] If the number of random access resources NPRACH in the second random access resource set satisfies the above relationship, then it can be guaranteed that within the airspace covered by the network-side equipment, different ATG airborne terminals on the airway or route are allocated different random access resources.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Shrestha-Shao-Wang to include the features as taught by Ke above in order to improve the random access success rate of the current ATG onboard terminal. (Ke, ¶ [n0006]). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LIEM H NGUYEN whose telephone number is (408) 918-7636. The examiner can normally be reached on Monday-Friday, 8:30AM-5:00PM PT. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Noel Beharry can be reached on (571) 270-5630. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /LIEM H. NGUYEN/Primary Examiner, Art Unit 2416
Read full office action

Prosecution Timeline

Sep 29, 2023
Application Filed
Jan 07, 2026
Non-Final Rejection — §103
Apr 02, 2026
Response Filed

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
71%
Grant Probability
96%
With Interview (+25.2%)
2y 12m
Median Time to Grant
Low
PTA Risk
Based on 222 resolved cases by this examiner. Grant probability derived from career allow rate.

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