US 11,843,551 B2
Flexible NR-U wideband operation
Umer Salim, Nanterre (FR)
Assigned to JRD COMMUNICATION (SHENZHEN) LTD., Guangdong (CN)
Appl. No. 17/265,190
Filed by JRD COMMUNICATION (SHENZHEN) LTD., Guangdong (CN)
PCT Filed Sep. 24, 2019, PCT No. PCT/CN2019/107523
§ 371(c)(1), (2) Date Feb. 1, 2021,
PCT Pub. No. WO2020/063586, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 1815700 (GB), filed on Sep. 26, 2018.
Prior Publication US 2021/0306117 A1, Sep. 30, 2021
Int. Cl. H04L 5/00 (2006.01); H04W 72/0453 (2023.01); H04W 72/23 (2023.01); H04W 72/0446 (2023.01); H04W 16/14 (2009.01)
CPC H04L 5/001 (2013.01) [H04L 5/0053 (2013.01); H04L 5/0094 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 72/23 (2023.01); H04L 5/0048 (2013.01); H04W 16/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of data communication in a cellular communications network based on an unlicensed carrier, the method performed by a base station of the cellular communications network, the base station being in communication with one or more mobile devices, the method comprising the steps of:
determining a set of sub-bands to be used of the plurality of sub-bands available for data transmission;
generating used sub-band control information pertaining to a plurality of sub-bands in the carrier based on the set of sub-bands to be used; and
providing the used sub-band control information to the one or more mobile devices,
wherein providing the used sub-band control information to the one or more mobile devices includes:
generating downlink control information (DCI) including the used sub-band control information; and
transmitting the DCI, in a group-common manner,
wherein the DCI is configured to include the information of the used sub-bands in a bitmap-based signalling where each bit of the bitmap provides a usage status of a sub-band in a channel occupancy time (COT) included with a COT identification and/or a COT duration;
wherein providing the used sub-band control information to the one or more mobile devices includes:
generating one or more preambles based on the set of used sub-bands; and transmitting the one or more preambles;
wherein the one or more preambles include single preamble, and the single preamble includes control information indicative of an active pattern of used sub-bands in a COT.