公开(公告)号：US20230319690A1

公开(公告)日：2023-10-05

申请号：US17654788

申请日：2022-03-14

Applicant: QUALCOMM Incorporated

Inventor： Harish REDDY KOTHAKAPU ,  Bhanu Kiran JANGA ,  Sohrab AHMAD

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W84/042

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for a scan reduction associated with legacy RATs. A UE may receive, from a database, an indication that a first RAT is unavailable for communications associated with a PLMN. The indication that the first RAT is unavailable may be based on one or more unsuccessful scans for the first RAT. The UE may scan for a second RAT based on a skipped scan for the first RAT. The skipped scan may be based on the indication that the first RAT is unavailable. The UE may communicate with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.

公开(公告)号：US20170111512A1

公开(公告)日：2017-04-20

申请号：US15270624

申请日：2016-09-20

Applicant: QUALCOMM Incorporated

Inventor： Harish REDDY KOTHAKAPU ,  Bhanu Kiran JANGA ,  Ajit GUPTA ,  Venkatesh Savithri MAHESH ,  Guatam Kumar GUPTA ,  Raju KASARAMONI

IPC: H04M7/00 ,  H04W76/02 ,  H04L29/06

CPC classification number: H04W76/16 ,  H04L65/1016 ,  H04L65/1069 ,  H04W48/18

Abstract: Aspects of the present disclosure provide an apparatus and techniques for wireless communication by a user equipment (UE), such as placing a video telephony (VT) call when a user equipment (UE) is camped on a non-Internet Protocol Multimedia Subsystem (IMS) network, such as a non-IMS Long Term Evolution (LTE) network. The UE may be in a coverage area of a first radio access technology (RAT) supported by a first standard, and in a coverage area of a second RAT supported by a second standard. The UE may determine the LTE network does not support IMS services. In response to the determination, the UE may take one or more actions to place a VT call using the second RAT which supports IMS services.