US 12,256,425 B2
Network access by a reduced capability user equipment
Hong He, San Jose, CA (US); Chunhai Yao, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Cupertino, CA (US); Jie Cui, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Sigen Ye, Whitehouse Station, NJ (US); Wei Zeng, Saratoga, CA (US); Weidong Yang, San Diego, CA (US); Yang Tang, San Jose, CA (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/593,511
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Aug. 5, 2020, PCT No. PCT/CN2020/107198
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2022/027356, PCT Pub. Date Feb. 10, 2022.
Prior Publication US 2022/0312475 A1, Sep. 29, 2022
Int. Cl. H04W 74/00 (2009.01); H04W 72/044 (2023.01); H04W 74/0833 (2024.01)
CPC H04W 74/006 (2013.01) [H04W 72/044 (2013.01); H04W 74/0833 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE), comprising:
receiving, from a base station of a wireless network, a broadcast including a system information block (SIB) identifying a plurality of random access channel (RACH) sub-bands of an uplink (UL) bandwidth and which of the plurality of RACH sub-bands includes physical random access channel (PRACH) resources;
selecting one of the plurality of RACH sub-bands for a PRACH transmission;
selecting a preamble from the selected RACH sub-band and transmit the preamble to the base station to initiate a RACH procedure;
receiving a random access response (RAR) from the base station; and
determining a number of message 3 (msg3) repetitions based on the RAR, wherein the number of msg3 repetitions is based on a predetermined number of bits of an UL grant in the RAR indicating one of a set of predetermined repetitions values for msg3 repetitions.