US 11,057,872 B2
Method and device for transmitting uplink control information
Qianqian Si, Beijing (CN); Xuejuan Gao, Beijing (CN); Xueming Pan, Beijing (CN); and Jiaqing Wang, Beijing (CN)
Assigned to China Academy of Telcommunications Technology, Beijing (CN)
Appl. No. 16/75,146
Filed by China Academy of Telecommunications Technology, Beijing (CN)
PCT Filed Jan. 24, 2017, PCT No. PCT/CN2017/072498
§ 371(c)(1), (2) Date Aug. 3, 2018,
PCT Pub. No. WO2017/133596, PCT Pub. Date Aug. 10, 2017.
Claims priority of application No. 201610080061.2 (CN), filed on Feb. 4, 2016.
Prior Publication US 2020/0170004 A1, May 28, 2020
Int. Cl. H04W 72/04 (2009.01); H04W 16/14 (2009.01); H04W 72/02 (2009.01); H04W 74/08 (2009.01)
CPC H04W 72/0413 (2013.01) [H04W 16/14 (2013.01); H04W 72/02 (2013.01); H04W 72/0453 (2013.01); H04W 74/0808 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for transmitting uplink control information, comprising:
determining, by a user equipment, a Physical Uplink Control Channel (PUCCH) switching carrier group and a maximum feedback delay, wherein the PUCCH switching carrier group comprises one licensed primary carrier and N unlicensed carriers, N is an integer more than or equal to 1, and end time of the maximum feedback delay is latest time when the user equipment transmits feedback information;
performing, by the user equipment, Listen Before Talk (LBT) detection for the unlicensed carriers in the PUCCH switching carrier group during the maximum feedback delay; and
when the LBT detection succeeds, selecting one of the unlicensed carriers to transmit uplink control information; or
when the LBT detection fails, transmitting the uplink control information over the licensed primary carrier.