US 12,267,698 B2
Interference cancellation method, apparatus, and system
Dongcheng Pan, Nanjing (CN); Bo Yang, Nanjing (CN); Peng Chen, Nanjing (CN); Yinliang Hu, Nanjing (CN); Fangchao Yuan, Nanjing (CN); Wei Gu, Nanjing (CN); and Jia Ke Li, Nanjing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on May 26, 2022, as Appl. No. 17/825,512.
Application 17/825,512 is a continuation of application No. PCT/CN2020/129843, filed on Nov. 18, 2020.
Claims priority of application No. 201911184428.5 (CN), filed on Nov. 27, 2019.
Prior Publication US 2022/0353704 A1, Nov. 3, 2022
Int. Cl. H04W 24/02 (2009.01); H04L 25/03 (2006.01); H04W 24/08 (2009.01)
CPC H04W 24/02 (2013.01) [H04L 25/03006 (2013.01); H04W 24/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An interference cancellation method, the method comprising:
generating, by a first device, a first packet, wherein the first packet comprises a first group of elements, a second group of elements, and user data, the first group of elements being different from the second group of elements; and
sending, by the first device, the first packet to a second device by using at least one pair of subcarriers, wherein two subcarriers in the at least one pair of subcarriers are symmetrical with respect to a direct current subcarrier, and wherein the first packet is usable by the second device to cancel interference in the user data based on the first group of elements and the second group of elements,
wherein there are a plurality of second devices, and
wherein generating the first packet comprises:
obtaining a joint interference cancellation coefficient of the at least one pair of subcarriers,
for any one of the plurality of second devices, performing, based on the joint interference cancellation coefficient, spatial mapping on a first group of elements, a second group of elements, and user data that are to be sent to any of the second devices, and
generating a first packet to be sent to any of the second devices, wherein the first packet comprises the first group of elements, the second group of elements, and the user data that are obtained after the spatial mapping.