Method for allocating resources to uplink control channel
A method for adaptively allocating resources of an uplink control channel according to a system situation is disclosed. If a base station (BS) recognizes the system situation, establishes control information for resource allocation, and transmits the control information to a mobile station (MS), the mobile station (MS) allocates resources for transmitting uplink control information using a specific block or a specific resource distribution method according to the corresponding control information. The system situation may be changed according to the number of users contained in the BS's coverage or the usage of a multi-antenna. The variation of the system situation is actively reflected so that the uplink channel resources can be effectively used.
1. A method for a mobile station to transmit uplink pilot signals to a base station in a mobile communication system, the method comprising:
transmitting a first type uplink pilot signal and first uplink control information to the base station,
wherein the first uplink control information mapped on one time domain unit within a first subframe is punctured by the first type uplink pilot signal, in response to the first type uplink pilot signal and the first uplink control information being simultaneously transmitted on the first subframe; and
transmitting a second type uplink pilot signal and second uplink control information on a second subframe to the base station, wherein the second uplink control information is mapped to each of time domain units adherent to a time domain unit where the second type uplink pilot signal is mapped,
wherein the second type uplink pilot signal is mapped to two time domain units, separated from each other, within one transmission time interval (TTI), and
wherein the second uplink control information is mapped to 4 time domain units, and each 2 of the 4 time domain units are adherent to each of the two time domain units within the one TTI.
2. The method of claim 1 , wherein the first type uplink pilot signal is for channel quality measurement, and the second type uplink pilot signal is for demodulation of the second uplink control information.
3. The method of claim 1 ,
wherein the first type uplink pilot signal is periodically transmitted with a first period, and the first uplink control information is periodically transmitted with a second period, and
wherein the first subframe is a subframe for simultaneously transmitting the first type uplink pilot signal and the first uplink control information according to the first and the second periods.
4. A mobile station for transmit uplink pilot signals to a base station in a mobile communication system, the mobile station comprising:
a transceiver for transmitting a first type uplink pilot signal and first uplink control information to the base station, and for transmitting a second type uplink pilot signal and second uplink control information on a second subframe to the base station; and
a processor configured for puncturing the first uplink control information mapped on one time domain unit within a first subframe by the first type uplink pilot signal, in response to the first type uplink pilot signal and the first uplink control information being simultaneously transmitted on the first subframe,
wherein the processor further configured for mapping the second uplink control information to each of time domain units adherent to a time domain unit where the second type uplink pilot signal is mapped,
wherein the second type uplink pilot signal is mapped to two time domain units, separated from each other, within one transmission time interval (TTI), and
wherein the second uplink control information is mapped to 4 time domain units, and each 2 of the 4 time domain units are adherent to each of the two time domain units within the one TTI.
5. The mobile station of claim 4 , wherein the first type uplink pilot signal is for channel quality measurement, and the second type uplink pilot signal is for demodulation of the second uplink control information.
6. The mobile station of claim 4 ,
wherein the processor controls the transceiver to periodically transmit the first type uplink pilot signal with a first period, and to periodically transmit the first uplink control information with a second period, and
wherein the first subframe is a subframe for simultaneously transmitting the first type uplink pilot signal and the first uplink control information according to the first and the second periods.