Method and device for receiving signal in wireless communication system
A method for a terminal to receive a signal in a wireless communication system according to one embodiment of the present invention comprises a step for confirming whether a configuration change exists for a cell-specific reference signal (CRS) of a neighboring cell, and if the CRS configuration is changed for a neighboring cell, the method for receiving s signal comprises the steps of: receiving system information of the neighboring cell and acknowledging the changed CRS configuration thereby; and receiving s signal from a serving cell by means of the changed CRS configuration of the neighboring cell.
1. A method of receiving a signal by a user equipment in a wireless communication system, comprising the steps of:
receiving a physical broadcast channel (PBCH) or a system information block (SIB) of a neighbor cell;
receiving information regarding a valid period of the PBCH or the SIB; and
checking, during the valid period whether, a cell specific reference signal (CRS) configuration of the neighbor cell has changed based on the PBCH or the SIB;
if the CRS configuration of the neighbor cell has changed, then determining the changed CRS configuration by receiving system information of the neighbor cell, and
receiving a signal from a serving cell using the changed CRS configuration of the neighbor cell; and
if the CRS configuration of the neighbor cell has not changed, then checking whether the CRS configuration of the neighbor cell has changed after the valid period has lapsed.
2. The method of claim 1 , wherein the user equipment further receives an indicator indicating which one of the transmitted PBCH and the transmitted SIB should be decoded.
3. The method of claim 1 , wherein the signal received from the serving cell does not include data in a resource element corresponding to the changed CRS configuration of the neighbor cell.
4. The method of claim 1 , the signal receiving step comprises the step of puncturing a resource element corresponding to the changed CRS configuration of the neighbor cell.
5. A user equipment device in a wireless communication system, the user equipment device comprising:
a receiving module; and
a processor that receives a physical broadcast channel (PBCH) or a system information block (SIB) of a neighbor cell, receives information on a valid period of the PBCH or the SIB, checks, during the valid period, whether a cell specific reference signal (CRS) configuration of the neighbor cell has changed based on the PBCH or the SIB;
wherein, if the CRS configuration of the neighbor cell has changed, then the processor determines the changed CRS configuration by receiving system information of the neighbor cell, and
receives a signal from a serving cell using the changed CRS configuration of the neighbor cell; and
if the CRS configuration of the neighbor cell has not changed, then the processor again whether the CRS configuration of the neighbor cell has changed after the valid period has lapsed.