US 11,991,697 B2
Method and apparatus for subband based channel access on unlicensed spectrum
Haipeng Lei, Beijing (CN); Zhi Yan, Beijing (CN); Lianhai Wu, Beijing (CN); and Bingchao Liu, Beijing (CN)
Assigned to Lenovo (Beijing) Limited, Beijing (CN)
Appl. No. 17/276,132
Filed by LENOVO (BEIJING) LIMITED, Beijing (CN)
PCT Filed Sep. 28, 2018, PCT No. PCT/CN2018/108407
§ 371(c)(1), (2) Date Mar. 13, 2021,
PCT Pub. No. WO2020/062056, PCT Pub. Date Apr. 2, 2020.
Prior Publication US 2022/0053536 A1, Feb. 17, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 1/16 (2023.01); H04L 1/1607 (2023.01); H04W 72/12 (2023.01); H04W 72/20 (2023.01); H04W 74/08 (2009.01); H04W 74/0808 (2024.01)
CPC H04W 72/20 (2023.01) [H04L 1/1614 (2013.01); H04L 5/0048 (2013.01); H04W 74/0808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE), the method comprising:
receiving a downlink control information (DCI) for scheduling transmission of data on a set of bandwidth portions of a carrier, wherein the carrier comprises a plurality of bandwidth portions and each bandwidth portion has a same bandwidth in frequency;
performing a listen-before-talk (LBT) test on the set of bandwidth portions, wherein the LBT test comprises a plurality of different types of operations, and the plurality of different types of operations comprises a complete LBT operation performed on a first bandwidth portion of the set of bandwidth portions and a one-shot LBT operation performed on a second bandwidth portion of the set of bandwidth portions; and
transmitting the data on one or more bandwidth portions of the set of bandwidth portions based on a result of the LBT test.