Patent ID: 9713127
Date: 2017-07-18
CPC Classifications: H04L,H04W

Claim:
1. A method for configuring a data transmission resource, the method comprising: configuring, by a first network device, a first transmission resource and a second transmission resource for a user equipment (UE), the first transmission resource used by the first network device and the UE, the second transmission resource used by a second network device and the UE, wherein carrier frequencies of the first transmission resource and the second transmission resource are different; configuring, by the first network device for the UE, a resource of a physical uplink control channel (PUCCH) corresponding to a physical downlink control channel in the second transmission resource, wherein the resource of the PUCCH is located on an uplink carrier corresponding to a downlink carrier of the first transmission resource, wherein the resource of the PUCCH is configured to be acquired by the UE according to a signaling indication or higher layer signaling of at least one physical downlink control channel in the physical downlink control channel, wherein the PUCCH is used to carry answer information sent by the UE for data that is carried in a physical downlink shared channel (PDSCH) of the second transmission resource; receiving, by the first network device, the PUCCH sent by the UE; and when information carried in the PUCCH comprises negative acknowledgement information sent by the UE for the data that is carried in the PDSCH of the second transmission resource, retransmitting, by the first network device by using a PDSCH of the first transmission resource, the data carried in the PDSCH of the second transmission resource, and indicating, by using signaling of a physical downlink control channel of the first transmission resource, to the UE that the data transmitted by the PDSCH of the first transmission resource is retransmitted data carried in the PDSCH of the second transmission resource, wherein the indicating comprises performing scrambling on the physical downlink control channel of the first transmission resource.