Search International and National Patent Collections

1. (WO2017156699) ACK FEEDBACK DEVICE, METHOD AND COMMUNICATIONS SYSTEM

Pub. No.:    WO/2017/156699    International Application No.:    PCT/CN2016/076348
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Wed Mar 16 00:59:59 CET 2016
IPC: H04L 1/00
Applicants: FUJITSU LIMITED
富士通株式会社
YANG, Xianjun
杨现俊
WANG, Xin
王昕
ZHANG, Jian
张健
Inventors: YANG, Xianjun
杨现俊
WANG, Xin
王昕
ZHANG, Jian
张健
Title: ACK FEEDBACK DEVICE, METHOD AND COMMUNICATIONS SYSTEM
Abstract:
An ACK feedback device, method and communications system. The ACK feedback method comprises: generating an ACK response vector according to whether or not data sent on a contention basis by multiple UEs is correctly demodulated; generating a measurement vector on the basis of a pre-determined compressed sensing measurement matrix and the ACK response vector; and broadcasting said measurement vector to multiple UEs; a UE recovers the ACK response vector on the basis of the compressed sensing measurement matrix and the measurement vector, and, according to the ACK response vector, determines whether the data sent was correctly demodulated. Thus, the present invention not only can be used in a contention-based data transmission scenario, but also has relatively low signaling overhead and reliable performance.