公开(公告)号：US20230076120A1

公开(公告)日：2023-03-09

申请号：US17899698

申请日：2022-08-31

Applicant: Apple Inc.

Inventor： Ashish Kumar Singh ,  Anshul Kumar Gupta ,  Franz Goldhofer ,  Pradeep Pangi ,  Mark Jeffery ,  Avinash Venugopal

IPC: H04W36/14 ,  H04W76/18

Abstract: Methods, apparatuses, and systems are disclosed for reducing latency during IRAT re-selection in the presence of race conditions. When a UE initiates an IRAT re-selection procedure, and concurrently initiates a call setup procedure, a race condition may result, in which the UE's NAS layer prioritizes the call setup procedure, while the RRC layer prioritizes the IRAT re-selection procedure. This may result in failure of the call setup procedure, which may lead to a user needing to re-initiate the call, resulting in poor user experience and significant latency. To prevent this, the UE may cache a message and/or other information relevant to the call setup procedure, until the IRAT re-selection procedure is complete. The UE may then proceed to complete the call setup procedure. The message may be cached, e.g., at the NAS layer or the RRC layer of the cellular modem, or by an application processor.

公开(公告)号：US11671822B2

公开(公告)日：2023-06-06

申请号：US16376528

申请日：2019-04-05

Applicant: APPLE INC.

Inventor： Alexandre Saso Stojanovski ,  Ashish Singh ,  Franz Goldhofer ,  Michael Zitzmann ,  Naveen Palle ,  Puneet Jain ,  Richard Burbidge ,  Sudeep Palat ,  Sudeep Manithara Vamanan ,  Sushant Kumar ,  Youn Hyoung Heo

IPC: H04W8/22 ,  H04W8/26 ,  H04W8/08 ,  H04W36/00 ,  H04W76/27 ,  H04W60/00

CPC classification number: H04W8/22 ,  H04W8/08 ,  H04W8/26 ,  H04W36/0022 ,  H04W36/0027 ,  H04W76/27 ,  H04W60/00

Abstract: An apparatus of a user equipment (UE) comprises one or more baseband processors to encode a unique UE identifier to be transmitted to an Access and Mobility Function (AMF) of a Fifth Generation (5G) network, wherein the unique identifier identifies UE capabilities to be stored in a UE capabilities database. An apparatus of Access and Mobility Function (AMF) of a Fifth Generation (5G) network comprises one or more processors to receive a user equipment (UE) Capabilities update from a remote server to update a UE capability database that stores UE capability information corresponding to one or more UEs identified with a unique identifier, and to process the UE Capabilities update via one or more Application Programming Interfaces (APIs).