# US 10,321,353 B2 · Operation methods of communication node supporting direct communications in network

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- Number: US 10,321,353 B2
- Document ID: US10321353B2
- Status: Granted
- Kind: B2
- Application number: 15/273,275
- Filed: 2016-09-22
- Published: 2017-03-23
- Granted: 2019-06-11
- Earliest claimed: 2015-09-23
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: Jae Heung Kim; Ji Hyung Kim; Mi Young Yun; Eun Ah Kim; Kyoung Seok Lee
- Web page: https://patentgrep.com/patent/US10321353B2

## CPC

- H04W 28/0278: {using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12)}
- H04W 4/027: {using movement velocity, acceleration information}
- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 72/51: based on terminal or device properties
- H04W 76/14: Direct-mode setup
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 48/12: using downlink control channel
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Disclosed are operation methods of communication node supporting direct communications in network. The operation method comprises obtaining scheduling information configured for the direct communications from a first base station; identifying modulation and coding scheme (MCS) information and radio resource information included in the scheduling information; and transmitting, to a second UE, a first message to which a MCS indicated by the MCS information is applied through radio resources indicated by the radio resource information. Therefore, performance of a communication system can be enhanced.

## Claims

### Claim 1

An operation method of a user equipment (UE) in a communication system, the operation method comprising:
receiving, from a base station, a signaling message indicating a speed threshold, a first modulation and coding scheme (MCS) range which is used when a speed of the UE is above the speed threshold, and a second MCS range which is used when the speed of the UE is below the speed threshold;
determining a MCS value within the first MCS range or the second MCS range which is determined based on the speed of the UE; and
performing a transmission process using the determined MCS value.

### Claim 2 (depends on 1)

The operation method of claim 1, wherein each of the first MCS range and the second MCS range indicates minimum and maximum MCS values.

### Claim 3 (depends on 1)

The operation method of claim 1, wherein the transmission process is performed without scheduling of the base station.

### Claim 4 (depends on 1)

The operation method of claim 1, wherein the signaling message further indicates a resource pool in which the transmission process is performed using the first MCS range or the second MCS range.

### Claim 5 (depends on 4)

The operation method of claim 4, wherein the performing the transmission process comprises:
determining resources within the resource pool; and
performing the transmission process using the determined MCS value in the determined resources.

### Claim 6 (depends on 4)

The operation method of claim 4, wherein the resource pool is used for the transmission process in a zone including one or more cells.

### Claim 7

An operation method of a base station in a communication system, the operation method comprising:
determining a speed threshold;
determining a first modulation and coding scheme (MCS) range which is used when a speed of a user equipment (UE) is above the speed threshold and a second MCS range which is used when the speed of the UE is below the speed threshold;
generating a signaling message indicating the speed threshold, the first MCS range, and the second MCS range; and
transmitting the signaling message to the UE.

### Claim 8 (depends on 7)

The operation method of claim 7, wherein each of the first MCS range and the second MCS range indicates minimum and maximum MCS values.

### Claim 9 (depends on 7)

The operation method of claim 7, wherein the signaling message further indicates a resource pool in which a transmission process is performed using the first MCS range or the second MCS range.

### Claim 10 (depends on 9)

The operation method of claim 9, wherein the resource pool is used for the transmission process in a zone including one or more cells.

### Claim 11 (depends on 9)

The operation method of claim 9, wherein the resource pool is configured based on the speed of the UE.