Method for transmitting and receiving signal between base station and vehicle terminal in distributed antenna communication system and apparatus therefor
Disclosed in the present application is a method by which a terminal having a plurality of distributed antenna groups transmits and receives a signal in a wireless communication system. Particularly, the method comprises the steps of: calculating channel quality indicators for each of distributed antenna groups; selecting a preferred distributed antenna group among the distributed antenna groups on the basis of the channel quality indicators; and reporting information on the channel quality indicators to a base station, wherein the method further comprises a step for reporting information on the preferred distributed antenna group to the base station when the preferred distributed antenna group differs from the preselected specific distributed antenna group.
1. A method of transmitting/receiving a signal by a user equipment having a plurality of distributed antenna groups in a wireless communication system, the method comprising:
computing channel quality indicators for the distributed antenna groups, respectively;
selecting a preferred distributed antenna group from the distributed antenna groups based on the channel quality indicators;
reporting information on the channel quality indicators to a base station; and
based on the preferred distributed antenna group being different from a previously selected specific distributed antenna group, reporting information on the preferred distributed antenna group to the base station.
2. The method of claim 1 , further comprising, based on the preferred distributed antenna group being different from the previously selected specific distributed antenna group, transmitting an aperiodic uplink reference signal including a Modulation and Coding Scheme (MCS) change request message to the base station.
3. The method of claim 1 , wherein the information on the preferred distributed antenna group is reported together with the channel quality indicators.
4. The method of claim 1 , wherein the information on the preferred distributed antenna group comprises a 1-bit indicator indicating that the preferred distributed antenna group is different from the previously selected specific distributed antenna group.
5. The method of claim 1 , further comprising, based on the preferred distributed antenna group being different from the previously selected specific distributed antenna group, transmitting a Power Headroom Report (PHR) for the preferred distributed antenna group to the base station.
6. A user equipment in a wireless communication system, the user equipment comprising:
a plurality of distributed antenna groups; and
a processor connected to a plurality of the distributed antenna groups,
wherein the processor is configured to select a preferred distributed antenna group from the distributed antenna groups based on channel quality indicators computed for the distributed antenna groups, respectively, report information on the channel quality indicators to a base station, and based on the preferred distributed antenna group being different from a previously selected specific distributed antenna group, report information on the preferred distributed antenna group to the base station.
7. The user equipment of claim 6 , wherein based on the preferred distributed antenna group being different from the previously selected specific distributed antenna group, the processor transmits an aperiodic uplink reference signal including a Modulation and Coding Scheme (MCS) change request message to the base station.
8. The user equipment of claim 6 , wherein the information on the preferred distributed antenna group is reported together with the channel quality indicators.
9. The user equipment of claim 6 , wherein the information on the preferred distributed antenna group comprises a 1-bit indicator indicating that the preferred distributed antenna group is different from the previously selected specific distributed antenna group.
10. The user equipment of claim 6 , wherein based on the preferred distributed antenna group being different from the previously selected specific distributed antenna group, the processor transmits a Power Headroom Report (PHR) for the preferred distributed antenna group to the base station.