US Patent No. 10,172,163

RANDOM ACCESS PREAMBLE FOR MINIMIZING PA BACKOFF


Patent No. 10,172,163
Issue Date January 01, 2019
Title Random Access Preamble For Minimizing Pa Backoff
Inventorship Xingqin Lin, San Jose, CA (US)
Ansuman Adhikary, Santa Clara, CA (US)
Dennis Hui, Sunnyvale, CA (US)
Niklas Johansson, Sunnyvale, CA (US)
Yutao Sui, Solna (SE)
Yi-Pin Eric Wang, Fremont, CA (US)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,172,163

1. A method, in a user equipment, the method comprising:generating a random access preamble signal comprising a plurality of preamble symbol groups, wherein each preamble symbol group comprises a cyclic prefix portion and a plurality of identical symbols; and
transmitting the random access preamble signal such that each preamble symbol group occupies a single subcarrier, and wherein a first preamble symbol group occupies a first subcarrier frequency, and a second preamble symbol group that is adjacent in time to the first symbol group occupies a second subcarrier frequency.