| 摘要 |
Disclosed is a information transmission method, comprising: a user equipment (UE) receiving the UL grant sent by a base station, the UL grant comprises the maximum value N of set {Ni,i=1,2,...,C}, wherein C is the number of downlink component carrier corresponding to the UE and is equal to or greater than 2, Ni is the sum of the number of downlink subframe bearing the physical downlink shared channel (PDSCH) of the UE and the number of downlink subframe bearing the physical downlink control channel (PDCCH) of the UE within all the downlink subframes of the downlink component carrier i of the downlink associated subframe set, the PDCCH is used to instruct the release of the downlink semi-persistent scheduling business (SPS) of the UE, and the downlink associated subframe set corresponds to the uplink subframe corresponding to the UL grant; the UE determining a response message according to the maximum value N and sending the response message to the base station via a physical uplink channel. Also disclosed is a base station, terminal and communication system. The transmission of response message on the physical uplink channel can be effectively achieved according to the technical scheme provided in the present invention.
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