Method for transmitting uplink control signal
A method for transmitting an uplink control signal includes receiving scheduling information for transmission of the uplink control signal, and transmitting the uplink control signal according to the scheduling information. Various control signals can be transmitted without interference with other control signals while maintaining a single carrier property.
1. A method for transmitting, by a user equipment, an uplink control signal, the method comprising:
receiving a first request for a channel quality indicator (CQI) from a base station in a first subframe, the first request indicating that the CQI is not to be transmitted in a second subframe which is a next subframe of the first subframe, the second subframe being a subframe where the CQI is to be transmitted periodically and an acknowledgement/nonacknowledgement (ACK/NACK) signal is to be transmitted;
transmitting the ACK/NACK signal to the base station in the second subframe;
receiving a second request for the CQI from the base station in the second subframe, the second request indicating that the CQI is to be transmitted in a third subframe which is a next subframe of the second subframe;
transmitting the CQI to the base station in the third subframe.
2. The method of claim 1 , wherein a value of the first request is 0, and
wherein a value of the second request is 1.
3. The method of claim 1 , wherein the first request and the second request are received through a physical downlink control channel (PDCCH).
4. The method of claim 1 , wherein the first request and the second request are medium access control (MAC) messages and are received through a physical downlink shared channel (PDSCH).
5. The method of claim 4 , wherein the MAC message includes a MAC header and a MAC payload including at least one MAC service data unit (SDU),
wherein the MAC header includes a Logical Channel Identifier (LCID) field and an R field, and
wherein the R field indicates the first request or the second request.