METHOD FOR TRANSMITTING UPLINK RESPONSE SIGNALS, BASE STATION, MOBILE STATION AND COMMUNICATION SYSTEM

摘要

A method for transmitting uplink response signals, base station, mobile station and communication system, includes judging whether to use a downlink secondary component carrier to transmit data to a mobile station; if the judging result is positive, allocating resources according to the number of transmission blocks for transmitting the downlink data in the secondary component carrier, accordingly the mobile station is able to use the resources corresponding to a preconfigured primary component carrier and the resources allocated to the secondary component carrier to select uplink resources for transmitting response signals.

主权项

1. A user equipment (UE), comprising:
a receiver configured to receive downlink data transmitted by a base station via a downlink component carrier; a circuit configured to select uplink resources from available resources for transmitting response signals obtained by decoding the received downlink data and select corresponding modulation symbols when the downlink component carrier for transmitting the downlink data includes a secondary component carrier; wherein the available resources include resources corresponding to a primary component carrier and resources allocated to the secondary component carrier by the base station; and a transmitter configured to transmit the response signals by using the selected uplink resources and the corresponding modulation symbols; wherein the circuit is further configured to select the uplink resources for transmitting the response signals and the modulation symbols by using a mapping relation between a state of the response signals and the selected resources and the modulation symbols according to the state of the response signals; and, wherein the mapping relation includes cases in which the resource corresponding to the response signal that is NACK/DTX is not selected; where NACK represents Negative Acknowledgement, and DTX represents Discontinuous Transmission; and when the response signals are all DTX, no resource is selected.