Device and method

Patent metadata

Field	Value
Publication number	US-2016353499-A1
Application number	US-201515116762-A
Country	US
Kind code	A1
Filing date	Jul 14, 2015
Priority date	Jul 29, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

A device includes circuitry that dynamically changes an uplink/downlink configuration of a time division duplex (TDD) carrier. The circuitry notifies a terminal device of a radio resource for device-to-device communication appropriate for the uplink/downlink configuration. The radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

First claim

1 . A device comprising:
circuitry configured to dynamically change an uplink/downlink configuration of a time division duplex (TDD) carrier, and notify a terminal device of a radio resource for device-to-device communication for the uplink/downlink configuration, wherein the radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

2 . The device according to claim 1 , wherein the circuitry is further configured to change the uplink/downlink configuration from one configuration among multiple configurations to another configuration among the multiple configurations.

3 . The device according to claim 2 ,
wherein the circuitry is further configured to notify the terminal device of the radio resource for device-to-device communication for the other configuration in accordance with the change of the uplink/downlink configuration, and the radio resource appropriate for the another configuration is a radio resource of at least one uplink subframe of the other configuration.

4 . The device according to claim 2 , wherein the circuitry is further configured to notify the terminal device of the radio resource for device-to-device communication for each of the multiple configurations.

5 . The device according to claim 4 ,
wherein the radio resource for each of the multiple configurations includes a radio resource for device-to-device communication for each configuration, and the radio resource for each configuration is a radio resource of at least one uplink subframe of the configuration.

6 . The device according to claim 4 , wherein the radio resource for each of the multiple configurations is a radio resource of at least one uplink subframe common among the multiple configurations.

7 . The device according to claim 1 , wherein a number of uplink subframes included in the at least one uplink subframe differs according to a number of uplink subframes of the uplink/downlink configuration.

8 . The device according to claim 1 , wherein the radio resource is a periodic radio resource that is repeated at a period corresponding to a number of uplink subframes of the uplink/downlink configuration.

9 . The device according to claim 1 , wherein the radio resource is a radio resource of an uplink subframe of a first number and is a periodic radio resource that is repeated at a first period when the uplink/downlink configuration is a first configuration, and the radio resource is a radio resource of an uplink subframe of a second number that is less than the first number and is a periodic radio resource that is repeated at a second period shorter than the first period when the uplink/downlink configuration is a second configuration.

10 . The device according to claim 1 , wherein the circuitry is further configured to notify terminal device of the radio resource when a number of uplink subframes of the uplink/downlink configuration is equal to or greater than a predetermined number.

11 . The device according to claim 1 , wherein the uplink/downlink configuration is a configuration including at least a predetermined number of uplink subframes.

12 . The device according to claim 1 ,
wherein each of the at least one uplink subframe is included in two or more successive uplink subframes of the uplink/downlink configuration, and wherein one or more uplink subframes of the two or more successive uplink subframes are not included in the at least one uplink subframe.

13 . The device according to claim 12 , wherein the circuitry is further configured to notify the terminal device of the radio resource when the uplink/downlink configuration includes two or more successive uplink subframes.

14 . The device according to claim 12 , wherein the uplink/downlink configuration is a configuration including two or more successive uplink subframes.

15 . The device according to claim 1 , wherein the circuitry is further configured to notify the terminal device of the radio resource by reporting system information indicating the radio resource.

16 . The device according to claim 1 , wherein the circuitry is further configured to notify the terminal device of the uplink/downlink configuration.

17 . A method comprising:
dynamically changing, by a processor, an uplink/downlink configuration of a time division duplex (TDD) carrier; and notifying a terminal device of a radio resource for device-to-device communication for the uplink/downlink configuration, wherein the radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

18 . A device comprising:
circuitry configured to acquire information indicating a radio resource for device-to-device communication for an uplink/downlink configuration of a time division duple (TDD) carrier that is dynamically changed by a base station; and control device-to-device communication using the radio resource, wherein the radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

19 . The device according to claim 18 ,
wherein the uplink/downlink configuration is a configuration that is changed from one configuration among multiple configurations to another configuration among the multiple configurations, and wherein the circuitry is further configured to acquire information indicating the radio resource for the uplink/downlink configuration among radio resources for device-to-device communication for the respective multiple configurations on the basis of the uplink/downlink configuration.

20 . A method comprising:
acquiring information indicating a radio resource for device-to-device communication for an uplink/downlink configuration of a time division duple (TDD) carrier that is dynamically changed by a base station; and controlling, by a processor, device-to-device communication using the radio resource, wherein the radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

Assignees

• Sony Corp

Inventors

• Takano Hiroaki

Classifications

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W76/14 Primary

  Direct-mode setup · CPC title

• H04L5/14 Primary

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04L5/1469

  using time-sharing · CPC title