# US 10,312,971 B2 · Method and apparatus for cooperative communication in wireless communication system

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- Number: US 10,312,971 B2
- Document ID: US10312971B2
- Status: Granted
- Kind: B2
- Application number: 14/763,122
- Filed: 2014-07-21
- Published: 2016-04-28
- Granted: 2019-06-04
- Earliest claimed: 2013-07-19
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd
- Inventors: Sung Hwan Won; Beomsik Bae; Sangsoo Jeong; Songyean Cho; Gyouhwan Kim
- Web page: https://patentgrep.com/patent/US10312971B2

## CPC

- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04B 7/0619: {using feedback from receiving side (feedback signaling for adaptive modulation/coding H04L1/0001)}
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 36/34: Reselection control
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for a cooperative communication according to a portion of the present specification, may include receiving at least one of information related to a radio access point and information related to a user equipment (UE) receiving a service from the radio access point, from the radio access point. The receiving may be performed by using a User Datagram Protocol (UDP) and a General Packet Radio Service (GPRS) Tunneling Protocol (GTP).

## Claims

### Claim 1

A method for coordinated multipoint (CoMP) communication by a first base station, comprising:
transmitting, to a second base station, a message including a reference signal received power (RSRP) measurement report of a terminal and a channel state information (CSI) report of the terminal, wherein the RSRP measurement report comprises identification of at least one of a serving cell that serves the terminal, on which a RSRP is measured, or a neighbor cell of the serving cell, on which the RSRP is measured; and
receiving, from the second base station, coordination information which is determined based on the RSRP measurement report and the CSI report at the second base station,
wherein the coordination information includes a resource assignment hypothesis for the CoMP communication and a benefit metric associated with the resource assignment hypothesis, wherein the benefit metric includes a value indicating an expected level of a benefit obtained by adopting the resource assignment hypothesis for the CoMP communication.

### Claim 2 (depends on 1)

The method of claim 1, wherein the benefit metric is validated based on the RSRP measurement report and the CSI report by the second base station.

### Claim 3 (depends on 1)

The method of claim 1, wherein the benefit metric is disregarded by the first base station if the benefit metric includes a predetermined value.

### Claim 4

A method for coordinated multipoint (CoMP) communication by a second base station, comprising:
receiving, from a first base station, a message including a reference signal received power (RSRP) measurement report of a terminal and a channel state information (CSI) report of the terminal, wherein the RSRP measurement report comprises identification of at least one of a serving cell that serves the terminal, on which a RSRP is measured, or a neighbor cell of the serving cell, on which the RSRP is measured;
determining coordination information based on the RSRP measurement report and the CSI report; and
transmitting, to the first base station, the determined coordination information,
wherein the coordination information includes a resource assignment hypothesis for the CoMP communication and a benefit metric associated with the resource assignment hypothesis, wherein the benefit metric includes a value indicating an expected level of a benefit obtained by adopting the resource assignment hypothesis for the CoMP communication.

### Claim 5 (depends on 4)

The method of claim 4, further comprising:
validating the coordination information based on the RSRP measurement report and the CSI report.

### Claim 6 (depends on 4)

The method of claim 4, wherein the benefit metric includes a predetermined value indicating disregard for the benefit metric.

### Claim 7

A first base station for coordinated multipoint (CoMP) communication, comprising:
a transceiver for transmitting and receiving a signal; and
a controller is configured to:
transmit, to a second base station, a message including a reference signal received power (RSRP) measurement report of a terminal and a channel state information (CSI) report of the terminal, wherein the RSRP measurement report comprises identification of at least one of a serving cell that serves the terminal, on which a RSRP is measured, or a neighbor cell of the serving cell, on which the RSRP is measured,
receive, from the second base station, coordination information which is determined based on the RSRP measurement report and the CSI report at the second base station, and
transmit, to the terminal, a data based on the coordination information,
wherein the coordination information includes a resource assignment hypothesis for the CoMP communication and a benefit metric associated with the resource assignment hypothesis, wherein the benefit metric includes a value indicating an expected level of a benefit obtained by adopting the resource assignment hypothesis for the CoMP communication.

### Claim 8 (depends on 7)

The first base station of claim 7, wherein the benefit metric is validated based on the RSRP measurement report and the CSI report by the second base station.

### Claim 9 (depends on 7)

The first base station of claim 7, wherein the benefit metric is disregarded by the first base station if the benefit metric includes a predetermined value.

### Claim 10

A second base station for coordinated multipoint (CoMP) communication, comprising:
a transceiver for transmitting and receiving a signal; and
a controller is configured to:
receive, from a first base station, a message including a reference signal received power (RSRP) measurement report of a terminal and a channel state information (CSI) report of the terminal, wherein the RSRP measurement report comprises identification of at least one of a serving cell that serves the terminal, on which a RSRP is measured, or a neighbor cell of the serving cell, on which the RSRP is measured,
determine coordination information based on the RSRP measurement report and the CSI report, and
transmit, to the first base station, the determined coordination information,
wherein the coordination information includes a resource assignment hypothesis for the CoMP communication and a benefit metric associated with the resource assignment hypothesis, wherein the benefit metric includes a value indicating an expected level of a benefit obtained by adopting the resource assignment hypothesis for the CoMP communication.

### Claim 11 (depends on 10)

The second base station of claim 10, wherein the controller is further configured to validate the coordination information based on the RSRP measurement report and the CSI report.

### Claim 12 (depends on 10)

The second base station of claim 10, wherein the benefit metric includes a predetermined value indicating disregard for the benefit metric.
