US 12,471,044 B2
In-channel narrowband companion air-interface assisted wideband RACH procedures
Alpaslan Demir, East Meadow, NY (US); Sanjay Goyal, Deer Park, NY (US); Hussain Elkotby, Conshohocken, PA (US); Tanbir Haque, Jackson Heights, NY (US); Ravikumar Pragada, Warrington, PA (US); Patrick Cabrol, Bayshore, NY (US); and Mihaela Beluri, Jericho, NY (US)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Appl. No. 18/267,273
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
PCT Filed Dec. 16, 2021, PCT No. PCT/US2021/063863
§ 371(c)(1), (2) Date Jun. 14, 2023,
PCT Pub. No. WO2022/133119, PCT Pub. Date Jun. 23, 2022.
Claims priority of provisional application 63/126,401, filed on Dec. 16, 2020.
Prior Publication US 2024/0064818 A1, Feb. 22, 2024
Int. Cl. H04W 74/00 (2009.01); H04W 56/00 (2009.01); H04W 74/0833 (2024.01); H04W 74/0836 (2024.01); H04W 74/0838 (2024.01)
CPC H04W 56/001 (2013.01) [H04W 74/0833 (2013.01); H04W 74/0836 (2024.01); H04W 74/0838 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A method implemented in a wireless transmit-receive unit (WTRU), the method comprising:
receiving a periodic downlink (DL) synchronization sequence on a narrowband air interface;
transmitting, in a first random access channel (RACH) procedure for the narrowband air interface, to a base station, information regarding a range between the WTRU and the base station;
receiving, in the first RACH procedure, from the base station, information indicating a RACH sequence for a wideband transceiver (WB TRX) and information indicating at least one RACH occasion for a second RACH procedure, wherein the RACH sequence for the WB TRX is based on a molecular absorption characteristic and the range; and
transmitting the RACH sequence for the WB TRX, in the second RACH procedure, during a first RACH occasion of the at least one RACH occasion for the second RACH procedure.