COMMUNICATION TERMINAL APPARATUS, COMMUNICATION CONTROL SYSTEM, AND COMMUNICATION CONTROL METHOD

• US 20150117359A1
• Filed: 09/05/2014
• Published: 04/30/2015
• Est. Priority Date: 10/24/2013
• Status: Active Grant

• Current Assignee: FCNT LLC
• Original Assignee: Fujitsu Limited
• Inventors: SAITO, Naritoshi
• Granted Patent: US 9,554,409 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A communication terminal apparatus includes: an assigning part configured to assign a usage right of a first subframe, from among a plurality of subframes included in a frame, to a base station, in a case where terminal-to-terminal communication is performed by transmission and reception of the frame directly with a different communication terminal apparatus, based on frequency information reported from the base station; and an acquiring part configured to acquire, during the terminal-to-terminal communication, information from the base station from the first subframe.

Claims

1. A communication terminal apparatus comprising:

an assigning part configured to assign a usage right of a first subframe, from among a plurality of subframes included in a frame, to a base station, in a case where terminal-to-terminal communication is performed by transmission and reception of the frame directly with a different communication terminal apparatus, based on frequency information reported from the base station; and

an acquiring part configured to acquire, during the terminal-to-terminal communication, information from the base station from the first subframe.

2. The communication terminal apparatus according to claim 1, wherein the assigning part assigns a usage right of an initial subframe from among the plurality of subframes, as the first subframe, to the base station.

3. The communication terminal apparatus according to claim 1, wherein the assigning part assigns usage rights of two or more subframes from among the plurality of subframes, as the first subframe, to the base station.

4. The communication terminal apparatus according to claim 1, wherein the assigning part assigns the usage right of the first subframe to the base station, by using a table in which correspondences between the subframes and usage rights are stored.

5. The communication terminal apparatus according to claim 4, wherein correspondences between the subframes and switching points are stored in the table.

6. A communication control system that performs communication between a first communication terminal apparatus, a second communication terminal apparatus, and a base station,

wherein the first communication terminal apparatus includes:

an assigning part configured to assign a usage right of a first subframe, from among a plurality of subframes included in a frame, to a base station, in a case where terminal-to-terminal communication is performed by transmission and reception of the frame directly with the second communication terminal apparatus, based on frequency information reported from the base station;

a reporting part configured to report to the base station first information of the first subframe and second information of a timing of transmission and reception of the frame transmitted and received between the first communication terminal apparatus and the second communication terminal apparatus; and

an acquiring part configured to acquire during the terminal-to-terminal communication third information from the base station from the first subframe.

7. The communication control system according to claim 6, wherein the base station includes a controller that synchronizes with the timing of the transmission and reception of the frame, based on the first information and the second information, and transmits the third information to the first communication terminal apparatus to match with a timing at which the first subframe arrives at the first communication terminal apparatus.

8. The communication control system according to claim 6, wherein the reporting part reports to the base station fourth information of a switching point representing a timing at which switching between uplink and downlink of the frame is performed, and makes a synchronization among the first communication terminal apparatus, the second communication terminal apparatus, and the base station.

9. The communication control system according to claim 6, wherein the first information and the second information are reported to the base station via a management unit included in the communication control system.

10. A communication control method, the method comprising:

assigning, by a computer, a usage right of a first subframe, from among a plurality of subframes included in a frame, to a base station, in a case where terminal-to-terminal communication is performed by transmission and reception of the frame directly with a different communication terminal apparatus, based on frequency information reported from the base station; and

acquiring during the terminal-to-terminal communication information from the base station from the first subframe.

11. The communication control method according to claim 10, wherein a usage right of an initial subframe, as the first subframe, from among the plurality of subframes, is assigned to the base station.

12. The communication control method according to claim 10, wherein usage rights of some subframes, as the first subframe, from among the plurality of subframes, are assigned to the base station.