Patent ID: 9203587
Filing Date: 2015-12-01
Classification: H04L,H04W

Abstract:
1. A method for transmitting acknowledgement or negative acknowledgement (ACK/NACK) indication information, comprising: configuring, by a network-side device, at least two carriers for a user equipment (UE), wherein the at least two carriers comprise a primary carrier and a secondary carrier; transmitting, by the network-side device, physical downlink control channel (PDCCH) information to the UE in a first downlink subframe, wherein the PDCCH information indicates scheduling information of a physical downlink shared channel (PDSCH), and the PDSCH is carried in a second downlink subframe, wherein subframes on the primary carrier and the secondary carrier at a timing of the second downlink subframe are downlink subframes; selecting, by the network-side device, from a group consisting of at least two timing relationships, timing relationship; determining an uplink subframe corresponding to the selected timing relationship, wherein the uplink subframe is usable for the UE to transmit the ACK/NACK corresponding to the PDSCH; and determining a carrier corresponding to the selected timing relationship usable for the UE to transmit the ACK/NACK corresponding to the PDSCH; indicating, by the network-side device, information relating to the determined third uplink subframe and the determined carrier to the UE; determining, by the network-side device, a channel resource usable for the UE to feed back the ACK/NACK corresponding to the PDSCH in the determined uplink subframe of the determined carrier, and indicating the channel resource to the UE; and receiving, by the network-side device, the ACK/NACK fed back by the UE on the first channel resource in the determined uplink subframe; wherein each of the at least two timing relationships indicates a timing for sending an ACK/NACK in an uplink subframe relative to reception of a downlink subframe carrying the PDSCH; and wherein the group consisting of at least two timing relationships comprises: a first timing relationship corresponding to the primary carrier and a second timing relationship corresponding to the secondary carrier.