Communication method in consideration of carrier types and apparatus for same

Patent metadata

Field	Value
Publication number	US-9515761-B2
Application number	US-201314379583-A
Country	US
Kind code	B2
Filing date	Feb 28, 2013
Priority date	Feb 29, 2012
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The present invention relates to a wireless communication system. In particular, the present invention relates to a method for a terminal to receive a downlink signal in a wireless communication system and to an apparatus for same, the method comprising the steps of: receiving, from a base station, a first piece of information indicating the start point of a multicast broadcast single frequency network (MBSFN) signal, receiving an MBSFN subframe having a plurality of orthogonal frequency division multiplexing (OFDM) symbols, and receiving the MBSFN signal from an OFDM symbol indicated by the first piece of information in the MBSFN subframe.

First claim

The invention claimed is:

1. A method of performing a measurement at a User Equipment (UE) in a wireless communication system, the method comprising:
receiving Reference Signal (RS) information of a neighbor cell; and
mitigating inter-cell RS interference using the RS information of the neighbor cell while performing the measurement,
wherein, when the RS information of the neighbor cell has no bandwidth information of the neighbor cell, a bandwidth of the neighbor cell is assumed to be the same as or larger than a bandwidth of a serving cell for mitigation of the inter-cell RS interference.

2. The method of claim 1 , wherein, when the RS information of the neighbor cell has no bandwidth information of the neighbor cell, the mitigation of the inter-cell RS interference is performed over a bandwidth being the same as or larger than the bandwidth of the serving cell.

3. The method of claim 1 , wherein the RS information includes allocation information indicating a subframe set related with RS transmission of the neighbor cell.

4. The method of claim 3 , wherein the mitigating is performed on one or more subframes used for RS transmission based on the allocation information.

5. The method of claim 1 , wherein the mitigation of the inter-cell RS interference is for when a center frequency of the neighbor cell is the same as a center frequency of the serving cell.

6. The method of claim 1 , wherein the RS information includes Cell-specific RS (CRS) information, and the inter-cell RS interference includes inter-cell CRS interference.

7. The method of claim 1 , wherein the performing of the measurement includes measuring downlink signals of the serving cell.

8. The method of claim 1 , wherein the performing of the measurement includes generating Channel Status Information (CSI) of the serving cell.

9. A User Equipment (UE) configured to perform a measurement in a wireless communication system, the UE comprising:
a Radio Frequency (RF) unit; and
a processor that,
receive Reference Signal (RS) information of a neighbor cell,
and mitigates inter-cell RS interference using the RS information of the neighbor cell while performing the measurement,

wherein, when the RS information of the neighbor cell has no bandwidth information of the neighbor cell, a bandwidth of the neighbor cell is assumed to be the same as or larger than a bandwidth of a serving cell for mitigation of the inter-cell RS interference.

10. The UE of claim 9 , wherein, when the RS information of the neighbor cell has no bandwidth information of the neighbor cell, mitigation of the inter-cell RS interference is performed over a bandwidth being the same as or larger than the bandwidth of the serving cell.

11. The UE of claim 9 , wherein the RS information includes allocation information indicating a subframe set related with RS transmission of the neighbor cell.

12. The UE of claim 11 , wherein the mitigating is performed on one or more subframes used for RS transmission based on the allocation information.

13. The UE of claim 9 , wherein the mitigation of the inter-cell RS interference is for when a center frequency of the neighbor cell is the same as a center frequency of the serving cell.

14. The UE of claim 9 , wherein the RS information includes Cell-specific RS (CRS) information, and the inter-cell RS interference includes inter-cell CRS interference.

15. The UE of claim 9 , wherein the performing of the measurement includes measuring downlink signals of the serving cell.

16. The UE of claim 9 , wherein the performing of the measurement includes generating Channel Status Information (CSI) of the serving cell.

Assignees

• Lg Electronics Inc

Inventors

• Seo Hanbyul
• Kim Byounghoon
• Yang Suckchel

Classifications

• H04W88/02

  Terminal devices · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04L5/0092

  Indication of how the channel is divided · CPC title

• H04J11/0056 Primary

  Inter-base station aspects · CPC title

• H04L5/008

  once only, on installation · CPC title