METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM

• US 20140355469A1
• Filed: 12/07/2012
• Published: 12/04/2014
• Est. Priority Date: 12/07/2011
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kang, Ji Won, Chun, Jin Young, Kim, Ki Tae, Kim, Su Nam, Ihm, Bin Chul, Park, Sung Ho
• Application Number:
  US14/361,236
• Publication Number:
  US 20140355469A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

Provided are a method for measuring the interference of user equipment (UE) in a wireless communication system, and user equipment using the method. The method involves receiving an indication of a reference resource and an amount of interference correction from a base station, measuring an amount of interference in the reference resource, and correcting the measured amount of interference on the basis of the instructed amount of interference. The user equipment feeds back the corrected amount of interference and/or channel state information generated on the basis of the corrected amount of interference to the base station.

Claims

1. A method for measuring interference performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving instruction of a reference resource and an amount of interference correction;

measuring an amount of interference at the reference resource;

correcting the measured amount of interference based on the amount of interference correction; and

giving feedback at least one of the corrected amount of interference and the channel state information generated based on the corrected amount of interference to the base station.

2. The method of claim 1, wherein the reference resource is the resource of which multiple nodes transmit zero-power channel state information.

3. The method of claim 2, wherein in case that an interference node except a serving node that is going to receive data by the UE is included in the multiple nodes, the amount of interference correction represents the amount of interference between the UE and the interference node.

4. The method of claim 1, wherein the amount of interference correction is an index representing an interference correction value.

5. The method of claim 1, wherein the amount of interference correction is included in a higher layer signal or a physical layer signal.

6. The method of claim 1, wherein the amount of interference correction is determined according to a cooperative transmission technique which is applied to the reference resource.

7. The method of claim 1, wherein the amount of interference correction is a correction value with regard to channel state information generated based on the amount of interference measured in the reference resource.

8. The method of claim 1, wherein in case that the reference resource is multiple, the amount of interference correction is provided for each of the multiple reference resources.

9. A user equipment (UE) to measure interference in a wireless communication system, the UE comprising:

a radio frequency (RF) unit to transmit or receive a wireless communication signal, and

a processor connected to the RF unit,

wherein the processor is configured to perform of;

receiving instruction of a reference resource and an amount of interference correction, measuring an amount of interference at the reference resource, correcting the measured amount of interference based on the amount of interference correction, and giving feedback at least one of the corrected amount of interference and the channel state information generated based on the corrected amount of interference to the base station.