US Patent No. 10,433,332

METHOD FOR TRANSMITTING UPLINK IN UNLICENSED BAND AND DEVICE USING SAME


Patent No. 10,433,332
Issue Date October 01, 2019
Title Method For Transmitting Uplink In Unlicensed Band And Device Using Same
Inventorship Joonkui Ahn, Seoul (KR)
Suckchel Yang, Seoul (KR)
Hanbyul Seo, Seoul (KR)
Yunjung Yi, Seoul (KR)
Seonwook Kim, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,433,332

1. A method for transmitting an uplink transport block in a wireless communication system, the method comprising:receiving, by a wireless device from a base station, an uplink grant scheduling at least one first subframe and at least one second subframe for transmitting an uplink transport block,
wherein the uplink grant scheduling includes scheduling a transmission of the uplink transport block during the at least one first subframe and the at least one second subframe;
performing, by the wireless device, a clear channel assessment (CCA) within a transmission window in an unlicensed band to determine whether a channel is idle or busy during the transmission window;
when the CCA determines that the channel is busy during the transmission window, dropping the scheduled transmission of the uplink transport block in the at least one first subframe and the at least one second subframe; and
when the CCA determines that the channel is idle, performing the scheduled transmission, by the wireless device, of the uplink transport block to the base station in the at least one first subframe within the transmission window in the unlicensed band,
wherein the performing the scheduled transmission includes:
determining whether the at least one first subframe and the at least second subframe are within a transmission window, and
suspending the scheduled transmission of the uplink transport block in the at least one second subframe when the at least one second subframe is beyond the transmission window.