Method for applying Physical Resource Block (PRB) bundling in wireless communications system and apparatus therefor

1. A method for applying a PRB (Physical Resource Block) bundling by a first cell in a wireless communications system, the method comprising:

setting a first cell and a second cell as a BBC (Bundling Cooperation Cells);

receiving traffic information of a second cell,

wherein the traffic information includes information on the traffic size transmitted through a single PRB and the traffic size transmitted through multiple PRBs, among downlink traffic data of the second cell;

determining a resource for the first and the second cell to apply a same PRB bundling, based on the traffic information,

wherein the same bundling is a pattern determined by whether data is transmitted through the single PRB or multiple PRBs over different subframes; and

transmitting an information on the resource to a user equipment.

2. The method of claim 1 , wherein the resource for applying the same PRB bundling is decided based upon a minimum value between a first traffic size being transmitted through the multiple PRBs by having the first cell apply the PRB bundling and a second traffic size being transmitted through the multiple PRBs by having the second cell apply the PRB bundling.

3. The method of claim 1 , wherein the resource for applying the same PRB bundling is sequentially decided starting from a subframe of a lower index.

4. The method of claim 1 , wherein the information on the resource for applying the same PRB bundling is configured by a bitmap method.

5. The method of claim 1 , wherein the information on the resource for applying the same PRB bundling is transmitted by using RRC (Radio Resource Control) signaling.

6. The method of claim 1 , wherein the information on the resource for applying the same PRB bundling is transmitted by using DCI (Downlink Control Information).

7. A base station for applying a PRB (Physical Resource Block) bundling in a wireless communications system, the base station comprising:

a RF (Radio Frequency) unit; and

a processor, that:

sets a first cell and a second cell as a BBC (Bundling Cooperation Cells),

controls the RF unit to receive a traffic information of a neighboring base station,

wherein the traffic information includes information on the traffic size transmitted through a single PRB and the traffic size transmitted through multiple PRBs, among the downlink traffic data of the second cell,

determines a resource for the base station and the neighboring base station to apply the same PRB bundling, based on the traffic information,

wherein the same bundling is a pattern determined by whether data is transmitted through the single PRB or multiple PRBs over different subframes, and

controls the RF unit to transmit an information on the resource to a user equipment.