Patent ID: 9629139
Date: 2017-04-18
CPC Classifications: H04W

Claim:
1. A method for controlling data transmission of a User Equipment (UE), comprising: a second UE receiving control information for instructing the second UE to receive data from a first UE, wherein the control information is transmitted on Physical Downlink Control Channel (PDCCH) and a Radio Network Temporary Identifier (RNTI), a signaling in the control information, or a format of the control information on the PDCCH indicates that the control information is used to control data transmission between the first UE and the second UE; the second UE receiving data from the first UE through Physical Uplink Shared Channel (PUSCH) according to the control information; and the second UE feeding back Acknowledgement/Negative Acknowledgement (ACK/NACK) information of the data received from the first UE through a Physical Uplink Control Channel (PUCCH); wherein, the PUCCH used by the second UE to transmit the ACK/NACK information is determined by any one of following modes: mode one: determining the PUCCH according to signaling transmitted by a base station to the second UE; and mode two: determining the PUCCH according to a location of a physical downlink control channel carrying scheduling information that the data is transmitted from the first UE to the second UE.