US Patent No. 10,462,824

WIRELESS COMMUNICATION SYSTEM, AND BASE STATION SIDE AND USER EQUIPMENT SIDE DEVICE AND METHOD


Patent No. 10,462,824
Issue Date October 29, 2019
Title Wireless Communication System, And Base Station Side And User Equipment Side Device And Method
Inventorship Yanzhao Hou, Beijing (CN)
Yuxin Wei, Beijing (CN)
Qimei Cui, Beijing (CN)
Qinyan Jiang, Beijing (CN)
Shiyu Zhang, Beijing (CN)
Hui Liang, Beijing (CN)
Shiwei Cao, Beijing (CN)
Xin Guo, Beijing (CN)
Chen Sun, Beijing (CN)
Jinhui Chen, Beijing (CN)
Assignee SONY CORPORATION, Tokyo (JP)

Claim of US Patent No. 10,462,824

1. An apparatus on a base station side in a wireless communication system, comprising:a processing unit configured to
receive a failed random access request from a user equipment, which was sent while the user equipment was in an RRC_IDLE state, wherein the failed random access request included a preamble sequence and a PRACH time-frequency resource indication which were both already received from a first successful random access request sent by another user equipment;
determine, in response to the failed random access request from the user equipment, whether the failed random access request was part of a contention-based access procedure; and
after determining the failed random access request was part of the contention-based access procedure, prepare auxiliary access information for the user equipment which was determined to have sent the second random access request which is part of the contention-based access procedure and which was determined to have included the preamble sequence and the PRACH time-frequency resource indication which were both already received from the first random access request;
wherein the auxiliary information is set so that the user equipment can use the auxiliary information in a subsequent non-contention based access request, and the auxiliary information includes a unique identification of the user equipment which sent the failed random access request for use in the subsequent non-contention based access request.