公开(公告)号：US20240172295A1

公开(公告)日：2024-05-23

申请号：US18548869

申请日：2021-05-29

Applicant: QUALCOMM Incorporated

Inventor： Yuyu YAN ,  Liang HONG ,  Jie MAO ,  Levent AYDIN ,  Erman KOKEN ,  yongle WU ,  Rebecca Wen-Ling YUAN ,  Ziad AHMAD ,  Brian Clarke BANISTER ,  Ashok MANTRAVADI ,  Nanrun WU ,  Xinyu WANG ,  Jie ZHU

IPC: H04W74/0833 ,  H04B17/318 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04B17/328 ,  H04W74/0866

Abstract: Aspects are provided which allow a UE to apply CFO compensation to resolve mismatched RAPIDs caused by uplink Doppler shifts in HST deployments. The UE obtains one or more RARs each including a RAPID, where each of the RARs is responsive to a random access message including a preamble. The UE determines, in each of a threshold number of the one or more RARs, that the RAPID of a corresponding RAR is different than the preamble of a corresponding random access message. The UE then offsets a carrier frequency for each of one or more subsequent random access messages in response to the determination. As a result, mismatched RAPIDs due to uplink Doppler shifts may be avoided and RACH success rates may thereby be improved.

公开(公告)号：US20230261785A1

公开(公告)日：2023-08-17

申请号：US17651058

申请日：2022-02-14

Applicant: QUALCOMM Incorporated

Inventor： Erman KOKEN ,  Gabi SARKIS ,  Hobin KIM ,  Hari SANKAR ,  Omar MEHANNA ,  Shravan Kumar Reddy GARLAPATI ,  Alessandro RISSO ,  Afshin HAFTBARADARAN

IPC: H04L1/00 ,  H03M13/13 ,  H04B1/7093

CPC classification number: H04L1/0057 ,  H03M13/13 ,  H04L1/0041 ,  H04B1/7093 ,  H04B2001/70935

Abstract: An apparatus may be configured to receive a polar-encoded transmission comprising at least one intermediate node associated with a first configuration of frozen leaf nodes and information leaf nodes. The apparatus may further be configured to apply an FHT to a first set of values associated with a first intermediate node of the at least one intermediate node to generate a second set of values associated with the first intermediate node. The apparatus may also be configured to select, based on the second set of values, one or more paths associated with the first intermediate node for a SSCL decoding. The apparatus may further be configured to calculate a path metric for each of the selected one or more paths associated with the first intermediate node.