	US 12,323,360 B2
	Uplink codeword to layer mapping and phase tracking reference signaling
Yushu Zhang, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Cupertino, CA (US); Hong He, Cupertino, CA (US); Huaning Niu, Cupertino, CA (US); Oghenekome Oteri, Cupertino, CA (US); Seyed Ali Akbar Fakoorian, Cupertino, CA (US); Wei Zeng, Saratoga, CA (US); and Weidong Yang, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/441,249
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Jul. 28, 2021, PCT No. PCT/CN2021/109062 § 371(c)(1), (2) Date Sep. 20, 2021, PCT Pub. No. WO2023/004646, PCT Pub. Date Feb. 2, 2023.
Prior Publication US 2023/0035992 A1, Feb. 2, 2023
Int. Cl. H04L 5/00 (2006.01); H04W 72/044 (2023.01)

CPC H04L 5/0053 (2013.01) [H04W 72/0466 (2013.01)]

12 Claims

1. A baseband processor comprising:

processing circuitry to:

receive configuration information from a base station, the configuration information to indicate at least two codewords are enabled for uplink transmissions;

receive scheduling information to schedule an uplink transmission;

identify a first mapping between a first phase-tracking reference signal (PTRS) port and a first transmission layer;

identify a second mapping between a first codeword and the first PTRS port; and

map the first codeword to the first transmission layer based on the first and second mappings;

map, based on the scheduling information and configuration information, a second codeword to a second transmission layer; and

generate the first codeword for transmission with the first transmission layer and the second codeword with the second transmission layer; and

interface circuitry coupled with the processing circuitry, the interface circuitry to enable communication.