公开(公告)号：US20230189371A1

公开(公告)日：2023-06-15

申请号：US17997088

申请日：2020-06-21

Applicant: QUALCOMM INCORPORATED

Inventor： Sohrab AHMAD ,  Bhanu Kiran JANGA ,  Osama LOTFALLAH ,  Abhishek BHATNAGAR ,  Quanling ZHANG

IPC: H04W76/18

CPC classification number: H04W76/18

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently falling back from one RAT to another RAT while maximizing the services available to a UE. When a request from a UE for communicating with a base station using one RAT is rejected by a network node for unexpected causes, the UE may use the techniques described herein to fallback to an appropriate RAT. For instance, after receiving a response indicating that a request including fifth generation (5G) parameters is rejected, the UE may drop the 5G parameters and fall back to fourth generation (4G), rather than falling back to second generation (2G) or third generation (3G). The unexpected causes may be preconfigured and may be determined based on a number of factors, including a subscription of the UE, a public land mobile network (PLMN) associated with the network node, etc.

公开(公告)号：US20240089805A1

公开(公告)日：2024-03-14

申请号：US18263044

申请日：2021-03-16

Applicant: QUALCOMM Incorporated

Inventor： Chaofeng HUI ,  Yuankun ZHU ,  Fojian ZHANG ,  Bing LENG ,  Quanling ZHANG ,  Bo YU

IPC: H04W36/00 ,  H04L1/00

CPC classification number: H04W36/0022 ,  H04L1/0013 ,  H04W36/0088

Abstract: Disclosed are techniques for wireless communication. In an aspect, a UE sets up an evolved packet system fallback (EPSFB) call procedure that is associated with network-configured inter-frequency measurements to be performed by the UE at a first inter-frequency measurement interval. The UE punctures some or all of the network-configured inter-frequency measurements during the EPSFB call procedure.

公开(公告)号：US20230072061A1

公开(公告)日：2023-03-09

申请号：US17760307

申请日：2020-04-07

Applicant: QUALCOMM Incorporated

Inventor： Fojian ZHENG ,  Jian LI ,  Chaofeng HUI ,  Quanling ZHANG ,  Hao ZHANG

IPC: H04W52/02

Abstract: Embodiments include systems and methods for enabling fast recovery by a user equipment (UE) from packet switched (PS) call failure in a fifth generation (5G) non-standalone (NSA) network. Various embodiments for recovering from PS call failure in a 5G NSA network may include determining whether a total number of Evolved Packet System (EPS) bearer deactivation requests received from a base station of a 5G NSA network during a time period exceeds a maximum counter value, and disabling 5G data calls on the UE in response to determining that the total number of EPS bearer deactivation requests received from the base station of the 5G NSA network during the time period exceeds the maximum counter value.