US 12,335,026 B2
Multiple access in backscatter communication systems
Sanjeewa Herath, Kanata (CA); and Javad Abdoli, Kanata (CA)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Oct. 26, 2022, as Appl. No. 17/973,685.
Application 17/973,685 is a continuation of application No. PCT/CN2021/088542, filed on Apr. 20, 2021.
Prior Publication US 2024/0146408 A1, May 2, 2024
Int. Cl. H04B 7/22 (2006.01); H04W 76/28 (2018.01)
CPC H04B 7/22 (2013.01) [H04W 76/28 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
a backscatter device receiving a carrier signal from a carrier communication device, the carrier signal having a start time;
the backscatter device producing a backscatter carrier signal from the received carrier signal;
at a time offset relative to the start time, the backscatter device generating a backscattered signal by modulating data using the backscatter carrier signal and transmitting the backscattered signal using a transmission resource; and
wherein the time offset is predefined and at least in part defines a time segment of the transmission resource.