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1. (WO2018204136) TRANSMISSION ADAPTATION AND GRANT-FREE ACCESS

Pub. No.:    WO/2018/204136    International Application No.:    PCT/US2018/029251
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu Apr 26 01:59:59 CEST 2018
IPC: H04W 72/04
H04B 7/0413
H04W 74/08
H04L 5/00
Applicants: IDAC HOLDINGS, INC.
Inventors: STERN-BERKOWITZ, Janet, A.
LEE, Moon-il
TOOHER, J., Patrick
DEMIR, Alpaslan
GOYAL, Sanjay
BELURI, Mihaela, C.
Title: TRANSMISSION ADAPTATION AND GRANT-FREE ACCESS
Abstract:
A wireless transmit receive unit (WTRU) may receive a set of candidate resources, which may be used for transmission. The WTRU may periodically perform CCA on a channel (e.g., before transmitting on the channel). When the channel is determined to be free, the WTRU may determine a resource for transmission from the candidate resources. The resource may be determined based on the time remaining in the time period. For example, when the time remaining in the time period is shorter, the WTRU may determine to transmit on a resource that comprises more frequency resources. The WTRU may determine a Multiple Input Multiple Output (MIMO) scheme based on the number of frequency resources. The WTRU may send a transmission on the resource, which may include a demodulation reference signal (DM-RS). The DM-RS may indicate the resource used from transmission to a receiver of the transmission.