US Patent No. 10,485,023

PAYLOAD-LESS PHYSICAL UPLINK MEASUREMENT INDICATION CHANNEL (PUMICH) DESIGN FOR UPLINK BASED MOBILITY


Patent No. 10,485,023
Issue Date November 19, 2019
Title Payload-less Physical Uplink Measurement Indication Channel (pumich) Design For Uplink Based Mobility
Inventorship Kambiz Azarian Yazdi, San Diego, CA (US)
Haitong Sun, Sunnyvale, CA (US)
Tingfang Ji, San Diego, CA (US)
Wanshi Chen, San Diego, CA (US)
Hao Xu, Beijing (CN)
Heechoon Lee, San Diego, CA (US)
Hung Ly, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,485,023

1. A method for wireless communications by a base station (BS), comprising:selecting a first set of random access procedure (RACH) signatures, each RACH signature comprising a combination of one or more RACH sequences, from a second set of RACH signatures, wherein the second set of RACH signatures comprises a pruned set of RACH signatures of a set of all possible RACH signatures, and wherein the pruned set of RACH signatures includes one or more non-orthogonal RACH signatures;
assigning RACH signatures only from the selected first set of RACH signatures to one or more user equipments (UEs) in a zone covered by the base station, wherein each of the one or more UEs is assigned a single RACH signature;
receiving at least one RACH signature of the first set of RACH signatures from at least one of the one or more UEs, wherein the at least one RACH signature is received without a corresponding data payload identifying the at least one UE; and
identifying the at least one UE based on the at least one RACH signature and the pruned set of RACH signatures.