Communication control device, communication control method, terminal device, and program
First Claim
1. A communication control device comprising:
- circuitry configured toidentify radio resources available for inter-device communication within a cell, the identified radio resources being assigned to a group of terminal devices for D2D communication in an idle mode, the identified radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; and
notify a terminal device of the group of terminal devices and located within the cell of the radio resources,wherein, when the radio resources are modified, the circuitry notifies the terminal device of modification of the radio resources through a paging message including a flag indicating that modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of terminal devices and being used for the random access procedure, andwherein, when the radio resources are modified, the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing.
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Accused Products
Abstract
There is provided a communication control device including a decision unit configured to decide radio resources available for inter-device communication within a cell, and a notification unit configured to notify a terminal device located within the cell of the radio resources. When the radio resources are modified, the notification unit gives notification of modification of the radio resources through paging. When the radio resources are modified, the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing.
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Citations
21 Claims
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1. A communication control device comprising:
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circuitry configured to identify radio resources available for inter-device communication within a cell, the identified radio resources being assigned to a group of terminal devices for D2D communication in an idle mode, the identified radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; and notify a terminal device of the group of terminal devices and located within the cell of the radio resources, wherein, when the radio resources are modified, the circuitry notifies the terminal device of modification of the radio resources through a paging message including a flag indicating that modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of terminal devices and being used for the random access procedure, and wherein, when the radio resources are modified, the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A communication control method comprising:
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identifying radio resources available for inter-device communication within a cell, the identified radio resources being assigned to a group of terminal devices for D2D communication in an idle mode, the identified radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; notifying a terminal device of the group of terminal devices and located within the cell of the radio resources; and when the radio resources are modified, notifying the terminal device of modification of the radio resources through a paging message including a flag indicating that modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of terminal devices and being used for the random access procedure, and wherein, when the radio resources are modified, the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing.
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19. A terminal device comprising:
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circuitry configured to recognize radio resources available for inter-device communication within a cell when the radio resources are identified and notification thereof is given, the radio resources being assigned to a group of terminal devices including the terminal device for D2D communication in an idle mode, the radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; control the inter-device communication in a manner that the recognized radio resources are used for the inter-device communication; and recognize modification of the radio resources when the radio resources are modified and notification of the modification of the radio resources is given through a paging message including a flag indicating that modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of terminal devices and being used for the random access procedure, and wherein, when the radio resources are modified, the circuitry controls the inter-device communication in a manner that the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing.
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20. A non-transitory computer-readable storage medium storing instructions thereon, which, when executed by a terminal device, cause the terminal device perform a method, the method comprising:
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recognizing radio resources available for inter-device communication within a cell when the radio resources are identified and notification thereof is given, the radio resources being assigned to a group of terminal devices including the terminal device for D2D communication in an idle mode, the radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; controlling the inter-device communication in a manner that the recognized radio resources are used for the inter-device communication; and recognizing modification of the radio resources when the radio resources are modified and notification of the modification of the radio resources is given through a paging message including a flag indicating that modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of terminal devices and being used for the random access procedure, and wherein, when the radio resources are modified, the controlling controls the inter-device communication in a manner that the radio resources before the modification refrain from being used for the inter-device communication after a predetermined timing and the radio resources after the modification are used for the inter-device communication after the predetermined timing.
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21. An electronic device comprising:
circuitry configured to receive radio resource information for Device-to-Device (D2D) communication, the radio resources indicated by the radio resource information being assigned to a group of electronic devices including the electronic device for D2D communication in an idle mode, the radio resources being selected among radio resources available for communication in the idle mode and being different than radio resources used for a random access procedure in the idle mode; perform D2D communication with another electronic device in the idle mode; obtain modified radio resource information for the D2D communication after receiving, in the idle mode, a paging message including a flag indicating that the modified radio resources will be described in a subsequent message, the flag being used for indicating modified radio resources for the group of electronic devices and being used for the random access procedure; and communicate with another electronic apparatus via the D2D communication using resources indicated by the modified radio resource information.
Specification