TERMINAL APPARATUS, COMMUNICATION CONTROL METHOD AND COMMUNICATION CONTROL APPARATUS

• US 20160021566A1
• Filed: 01/31/2014
• Published: 01/21/2016
• Est. Priority Date: 04/10/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: KIMURA, Ryota, UCHIYAMA, Hiromasa, SAWAI, Ryo, FURUICHI, Sho, TAKANO, Hiroaki, TSUDA, Shinichiro
• Granted Patent: US 10,499,277 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 92/18 between terminal devices

Abstract

[Object] To allow an increase in load on the base station to be suppressed when the device-to-device communication is performed.

[Solution] There is provided a terminal apparatus capable of communicating with a base station, the terminal apparatus including an acquisition unit that acquires radio resource information related to a radio resource usable for device-to-device communication not via the base station, of radio resources controllable by the base station, and a determination unit that determines a size of data to be transmitted and received in the device-to-device communication on the basis of the radio resource information.

Claims

1. A terminal apparatus capable of communicating with a base station, the terminal apparatus comprising:

an acquisition unit that acquires radio resource information related to a radio resource usable for device-to-device communication not via the base station, of radio resources controllable by the base station; and

a determination unit that determines a size of data to be transmitted and received in the device-to-device communication on the basis of the radio resource information.

2. The terminal apparatus according to claim 1, further comprising:

a notification unit that notifies another apparatus which performs the device-to-device communication of size-related information related to the size.

3. The terminal apparatus according to claim 2,

wherein the other apparatus is notified of the size-related information through transmission on a control channel for transmitting a control signal.

4. The terminal apparatus according to claim 2,

wherein the other apparatus is notified of the size-related information through transmission on a data channel for transmitting data.

5. The terminal apparatus according to claim 2,

wherein the size is one of a plurality of predetermined sizes, and

wherein the size-related information is information corresponding to the one of the plurality of predetermined sizes.

6. The terminal apparatus according to claim 2,

wherein the size-related information is information indicating the size.

7. The terminal apparatus according to claim 1,

wherein an apparatus on a transmitting side in the device-to-device communication is notified of the radio resource usable for the device-to-device communication, as a resource for transmission, and an apparatus on a receiving side in the device-to-device communication is notified of the radio resource usable for the device-to-device communication, as a resource for reception.

8. The terminal apparatus according to claim 1,

wherein the determination unit determines the size further on the basis of at least one of a modulation scheme and an encoding scheme.

9. The terminal apparatus according to claim 8,

wherein the modulation scheme and the encoding scheme are a modulation scheme and an encoding scheme to be used in the device-to-device communication by an apparatus that performs the device-to-device communication.

10. The terminal apparatus according to claim 9,

wherein the determination unit, when the terminal apparatus is not the apparatus that performs the device-to-device communication, acquires information related to a channel to be used in the device-to-device communication, and identifies the modulation scheme and the encoding scheme from the information.

11. The terminal apparatus according to claim 8,

wherein the modulation scheme and the encoding scheme, when the terminal apparatus is not an apparatus that performs the device-to-device communication, are a predetermined modulation scheme and a predetermined encoding scheme.

12. The terminal apparatus according to claim 11,

wherein the predetermined modulation scheme is a modulation scheme having the lowest data rate among a plurality of usable modulation schemes, and

wherein the predetermined encoding scheme is an encoding scheme having the lowest data rate among a plurality of usable encoding schemes.

13. The terminal apparatus according to claim 8,

wherein the determination unit calculates an amount of a resource for data usable for transmission and reception of the data, of the radio resources usable for the device-to-device communication, on the basis of the radio resource information, and determines the size on the basis of the amount of the resource for data and the at least one of the modulation scheme and the encoding scheme.

14. The terminal apparatus according to claim 8,

wherein the determination unit determines, as the size, a minimum size of one or more predetermined sizes corresponding to an amount of the radio resource usable for the device-to-device communication, and the at least one of the modulation scheme and the encoding scheme, on the basis of the radio resource information and the at least one of the modulation scheme and the encoding scheme.

15. The terminal apparatus according to claim 1,

wherein the radio resource usable for the device-to-device communication is a part or all of radio resources to be reported by the base station as a usable radio resource.

16. The terminal apparatus according to claim 15,

wherein the device-to-device communication is radio communication in a localized network controlled by the terminal apparatus, and

wherein the radio resource usable for the device-to-device communication is assigned by the terminal apparatus as a radio resource for the device-to-device communication from among the radio resources to be reported by the base station.

17. The terminal apparatus according to claim 15,

wherein the radio resource usable for the device-to-device communication is assigned by the base station as a radio resource for the device-to-device communication, and is reported by the base station.

18. The terminal apparatus according to claim 1,

wherein the radio resource usable for the device-to-device communication is a part or all of radio resources estimated as a usable radio resource.

19. An information processing apparatus that controls a terminal apparatus capable of communicating with a base station, the information processing apparatus comprising:

a memory that stores a predetermined program; and

a processor capable of executing the predetermined program,

wherein the predetermined program serves to execute

acquiring radio resource information related to a radio resource usable for device-to-device communication not via the base station, of radio resources controllable by the base station, and

determining a size of data to be transmitted and received in the device-to-device communication on the basis of the radio resource information.

20. A communication control apparatus of a base station, the communication control apparatus comprising:

an assignment unit that assigns a radio resource for radio communication between the base station and a terminal apparatus to the terminal apparatus from among radio resources controllable by the base station; and

a notification unit that notifies the terminal apparatus of usable radio resources of the radio resources controllable by the base station,

wherein a part or all of the usable radio resources are used for device-to-device communication not via the base station, and

wherein a size of data to be transmitted and received in the device-to-device communication is not determined by the base station, but determined by the terminal apparatus capable of communicating with the base station.