US 12,112,183 B2
Method and apparatus for contention window size adjustment
Yu Zhang, Beijing (CN); Haipeng Lei, Beijing (CN); and Alexander Golitschek Edler Von Elbwart, Darmstadt (DE)
Assigned to Lenovo (Beijing) Limited, Beijing (CN)
Appl. No. 17/431,083
Filed by LENOVO (BEIJING) LIMITED, Beijing (CN)
PCT Filed Feb. 15, 2019, PCT No. PCT/CN2019/075298
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/164157, PCT Pub. Date Aug. 20, 2020.
Prior Publication US 2022/0129286 A1, Apr. 28, 2022
Int. Cl. G06F 9/355 (2018.01); G06F 9/451 (2018.01)
CPC G06F 9/452 (2018.02) [G06F 9/3555 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method performed by a base station, comprising:
receiving a first group of feedback signals from a user equipment (UE) indicating a first state corresponding to data transmitted in a first band used by a carrier, the first group of feedback signals comprising at least one first feedback signal;
receiving a second group of feedback signals from the UE indicating a second state corresponding to data transmitted in the first band used by the carrier;
determining a first scaling factor α for one of the at least one first feedback signal;
determining a ratio of the first group of feedback signals to the first group of feedback signals and the second group of feedback signals; and
comparing the ratio to a threshold to determine a contention window size of the first band for a contention window;
generating a random back-off counter within the contention window, and adjusting the contention window size of a transmitter of the base station, based on the ratio;
wherein the first scaling factor α substitutes a weight of the one of the at least one first feedback signal in determination of the ratio of the first group of feedback signals to the first group of feedback signals and the second group of feedback signals.