COMMUNICATION CONTROL METHOD

• US 20160242144A1
• Filed: 09/22/2014
• Published: 08/18/2016
• Est. Priority Date: 09/27/2013
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: ADACHI, Hiroyuki, FUKUTA, Noriyoshi, FUJISHIRO, Masato, MORITA, Kugo
• Granted Patent: US 9,699,767 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/563 of the wireless resources
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 92/18 between terminal devices

Abstract

A communication control method includes: a step A of receiving, by UE 100-1 in a coverage of the mobile communication system, broadcast information transmitted from eNB 200; a step B of transferring, by the UE 100-1, the broadcast information to UE 100-2 outside the coverage of the mobile communication system; and a step C of receiving, by the UE 100-2, the broadcast information transferred from the UE 100-1.

Claims

1. A communication control method used in a mobile communication system supporting D2D communication which is direct terminal-to-terminal communication, comprising:

a step A of receiving, by a first user terminal in a coverage of the mobile communication system, broadcast information transmitted from a base station;

a step B of transferring, by the first user terminal, the broadcast information to a second user terminal outside the coverage of the mobile communication system; and

a step C of receiving, by the second user terminal, the broadcast information transferred from the first user terminal.

2. The communication control method according to claim 1, wherein

the broadcast information includes D2D resource information indicating radio resources available for the D2D communication.

3. The communication control method according to claim 1, wherein

the broadcast information includes warning information distributed by a warning distribution system.

4. The communication control method according to claim 2, further comprising:

a step of performing, on the basis of the broadcast information, the D2D communication between the first user terminal and the second user terminal with the radio resources available for the D2D communication.

5. The communication control method according to claim 2, wherein

some radio resources available for the D2D communication are secured as special radio resources to transfer the broadcast information, and

in the step B, the first user terminal transfers the broadcast information to the second user terminal with the special radio resources.

6. The communication control method according to claim 2, wherein

some radio resources available for the D2D communication are secured as special radio resources to transmit information required to be transmitted with high reliability and at low delay in the D2D communication.

7. The communication control method according to claim 3, wherein

when the first user terminal receives the warning information in the step A, in the step B, the first user terminal preferentially assigns the radio resources available for the D2D communication to transferring of the warning information and then transfers the warning information to the second user terminal.

8. A communication control method used in a mobile communication system supporting D2D communication which is direct terminal-to-terminal communication, comprising:

a step A of transmitting, from a first user terminal of RRC connected mode in coverage of a base station of the mobile communication system to the base station, request information for requesting assignment of radio resources to be used for the D2D communication; and

a step B of receiving, by the first user terminal, resource assignment information indicating radio resources assigned in response to the request information.

9. The communication control method according to claim 8, further comprising:

a step C of transferring the resource assignment information from the first user terminal to a second user terminal outside the coverage.

10. A communication control method used in a mobile communication system supporting D2D communication which is direct terminal-to-terminal communication, comprising:

a step A of determining, by a base station of the mobile communication system, radio resources to be used for the D2D communication on the basis of number of user terminal having an interest in the D2D communication; and

a step B of broadcasting, by the base station, resource assignment information indicating the determined radio resources.

11. The communication control method according to claim 10, further comprising:

a step C of receiving the resource assignment information by a first user terminal in coverage of the base station; and

a step D of transferring the resource assignment information from the first user terminal to a second user terminal outside the coverage.

12. A communication control method used in a mobile communication system supporting D2D communication which is direct terminal-to-terminal communication, comprising:

predefining radio resources to be used for the D2D communication; and

a step of autonomously performing, by a first user terminal outside coverage of a base station of the mobile communication system, the D2D communication using the predefined radio resources.