公开(公告)号：US20230413185A1

公开(公告)日：2023-12-21

申请号：US18251050

申请日：2020-12-14

Applicant: QUALCOMM Incorporated

Inventor： Hao ZHANG ,  Wei HE ,  Yan WANG ,  Jian LI ,  Aimin SHANG ,  Miao FU ,  Chaofeng HUI ,  Yuankun ZHU ,  Fojian ZHANG

IPC: H04W52/22 ,  H04W52/50 ,  H04W74/08 ,  H04W36/14

CPC classification number: H04W52/228 ,  H04W36/14 ,  H04W74/0833 ,  H04W52/50

Abstract: In an aspect, a UE may determine an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures. The UE may further attempt an initial transmission of the PRACH preamble based on the determined initial transmission power.

公开(公告)号：US20240049119A1

公开(公告)日：2024-02-08

申请号：US18256034

申请日：2021-02-05

Applicant: QUALCOMM Incorporated

Inventor： Hao ZHANG ,  Aimin SHANG ,  Jian LI

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W84/042

Abstract: Apparatus, methods, and computer-readable media for improvements to public land mobile network (PLMN) search at user equipment (UE) switch-on for wireless communications are disclosed herein. A user equipment (UE) may determine to request for a first service associated with a first radio access technology (RAT). The UE may determine whether an identifier of a first registered public land mobile network (RPLMN) associated with the first RAT is present in the UE. The UE may camp on a first cell of the first RPLMN when the identifier of the first RPLMN is present in the UE.