METHOD FOR PERFORMING CoMP OPERATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

Patent metadata

Field	Value
Publication number	US-2016353457-A1
Application number	US-201415114980-A
Country	US
Kind code	A1
Filing date	Dec 29, 2014
Priority date	Feb 1, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

The present invention discloses a method for performing a CoMP operation in a wireless communication system and an apparatus for the method. A method for performing an Inter-eNB CoMP (Coordinated Multi-Point) operation in a wireless communication system comprises receiving, by a first eNB, a message requesting initiation of a CoMP operation from a second eNB; transmitting, by the first eNB, to the second eNB a message requesting information about gain expected from a CoMP operation carried out in the second eNB; receiving, by the first eNB, the information about gain expected from the second eNB; coordinating, by the first eNB, resources for a CoMP operation based on the information of expected gain; and transmitting, by the first eNB, the resource coordination result to the second eNB.

First claim

1 . A method for performing an Inter-eNB CoMP (Coordinated Multi-Point) operation in a wireless communication system, comprising:
receiving, by a first eNB, a message requesting initiation of a CoMP operation from a second eNB; transmitting, by the first eNB, to the second eNB a message requesting information about gain expected from a CoMP operation performed in the second eNB; receiving, by the first eNB, the information about gain expected from the second eNB; coordinating, by the first eNB, resources for a CoMP operation based on the information of expected gain; and transmitting, by the first eNB, the resource coordination result to the second eNB.

2 . The method of claim 1 , wherein the first eNB transmits a transmission period of the information about expected gain or information about a transmission condition together while requesting the second eNB for the information about expected gain.

3 . The method of claim 2 , wherein, if the first eNB receives again the information about expected gain, resources for the CoPM operation are coordinated again.

4 . The method of claim 1 , further comprising:
transmitting, by the first eNB, a message for requesting a usage ratio status of resources for the CoMP operation to the second eNB; and receiving, by the first eNB, a usage ratio status of resources for the CoMP operation from the second eNB.

5 . The method of claim 4 , further comprising:
Determining, by the first eNB, whether to stop the CoMP operation based on a usage ratio status of resources for the CoMP operation.

6 . The method of claim 5 , further comprising:
if a usage ratio status of resources for the CoMP operation is reduced below a predetermined threshold, transmitting, by the first eNB, a message requesting stopping of the CoMP operation to the second eNB.

7 . The method of claim 1 , wherein the resource coordination result includes at least one of information of frequency/time/power/spatial domain resource allocations, the physical resource block (PRB) muting scheduling result, relative narrowband transmit power (RNTP) scheduling result, almost blank sub-frames (ABS) pattern scheduling result, PRB power strength scheduling result and coordination for reference signal configurations, Channel State Information (CSI) processes, and CSI-Interference Measurement (IM) configurations of the first and the second eNBs supposed to perform the CoMP operation.

8 . The method of claim 1 , further comprising:
transmitting, by the first eNB, a message requesting the second eNB for measurement information; and receiving, by the first eNB, the measurement information from the second eNB.

9 . The method of claim 8 , wherein the measurement information includes at least one of Channel Stat Information (CSI), Reference Signal Received Power (RSRP), SRS received power, and User perceived throughput.

10 . A first eNB for performing an Inter-eNB CoMP operation in a wireless communication system, the first eNB comprising:
a Radio Frequency (RF) unit configured to transmit and receive a radio signal; and a processor, wherein the processor is configured to: receive a message requesting initiation of a CoMP operation from a second eNB, transmit to the second eNB a message requesting information about expected gain when a CoMP operation is carried out in the second eNB, receive the information about expected gain from the second eNB, coordinate resources for a CoMP operation based on the information about expected gain, and transmit the resource coordination result to the second eNB.

Assignees

• Lg Electronics Inc

Inventors

• Park Kyungmin
• Xu Jian
• Byun Daewook

Classifications

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04L43/16

  Threshold monitoring · CPC title

• H04W24/08

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

• H04W72/085 Primary

  Electricity · mapped topic

• H04B7/024 Primary

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title