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1. (WO2015042896) DATA TRANSMISSION METHOD AND DEVICE

Pub. No.:    WO/2015/042896    International Application No.:    PCT/CN2013/084556
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Mon Sep 30 01:59:59 CEST 2013
IPC: H04W 28/16
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: YANG, Xun
杨讯
WU, Tianyu
伍天宇
LI, Yunbo
李云波
Title: DATA TRANSMISSION METHOD AND DEVICE
Abstract:
Disclosed is a data transmission method. The method comprises: reserving a first channel and a second channel, wherein the first channel is used for transmitting data and the second channel is used for transmitting ACKs; sending data to a receiving end on the first channel that is reserved; receiving an ACK that is sent by the receiving end and corresponds to the data on the second channel that is reserved and determining whether the data needs to be cached based on information carried in the ACK; and if the information carried in the ACK indicates that the receiving end has correctly received the data, clearing the data that is cached by a sending end. Through separate transmission of the data and the ACK, an efficiency problem of the sending end in providing MAC in a wireless system in a condition of a limited cache capacity is resolved.