Communication system, base station, user equipment, and discovery method for device-to-device communication
First Claim
1. A communication system, comprising:
- a base station, including a transmitter and a receiver, the base station serves a plurality of user equipments within a transmission range of the base station, wherein each of the user equipments uses one of a plurality of carrier frequency bands for communication,wherein the base station enable the receiver to obtain device-to-device communication requests of the user equipments by the carrier frequency bands and groups the user equipments into a plurality of groups according to locations of the user equipments,the base station allocates a discovery resource pool of a predefined carrier frequency band to the user equipments in a same group and enables each of the user equipments to transmit a discovery message corresponding to each of the user equipments'"'"' own in the discovery resource pool by the transmitter, andeach of the user equipments has a priority message corresponding to the discovery resource pool and selectively receives the discovery messages according to the priority message.
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Accused Products
Abstract
Embodiments of a communication system, a base station (BS), a user equipment (UE), and a discovery method for device-to-device (D2D) communication are provided. The communication system includes a base station and multiple UEs. Each of the UEs uses one of multiple carrier frequency bands for communication. The BS obtains D2D communication requests of the UEs by the carrier frequency bands, and groups the UEs into multiple groups according to locations of the UEs. The BS allocates a discovery resource pool of a predefined carrier frequency band to the UEs in the same group and enables each of the UEs to transmit a discovery message corresponding to each of the UEs'"'"' own in the discovery resource pool.
31 Citations
35 Claims
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1. A communication system, comprising:
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a base station, including a transmitter and a receiver, the base station serves a plurality of user equipments within a transmission range of the base station, wherein each of the user equipments uses one of a plurality of carrier frequency bands for communication, wherein the base station enable the receiver to obtain device-to-device communication requests of the user equipments by the carrier frequency bands and groups the user equipments into a plurality of groups according to locations of the user equipments, the base station allocates a discovery resource pool of a predefined carrier frequency band to the user equipments in a same group and enables each of the user equipments to transmit a discovery message corresponding to each of the user equipments'"'"' own in the discovery resource pool by the transmitter, and each of the user equipments has a priority message corresponding to the discovery resource pool and selectively receives the discovery messages according to the priority message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment, comprising:
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a transceiver, configured to transceive wireless data for communication by one of a plurality of carrier frequency bands; and a processor, operatively coupled to the transceiver, wherein the processor enables the transceiver to transmit a device-to-device communication request of the user equipment to a base station and obtains a resource pool message from the base station, wherein the resource pool message is configured to allocate a discovery resource pool of a predefined carrier frequency band to the user equipment in a group, and user equipments in the group are geographically close to one another, wherein the processor enables the transceiver to transmit a discovery message of the user equipment in the discovery resource pool, and the user equipment has a priority message corresponding to the discovery resource pool and selectively receives the discovery messages according to the priority message. - View Dependent Claims (10, 11)
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12. A user equipment, comprising:
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a transceiver, configured to transceive wireless data for communication by one of a plurality of carrier frequency bands; and a processor, operatively coupled to the transceiver, wherein the processor enables the transceiver to transmit a device-to-device communication request of the user equipment to a base station and obtains a resource pool message from the base station, wherein the resource pool message is configured to allocate a discovery resource pool of a predefined carrier frequency band to the user equipment in a group, and user equipments in the group are geographically close to one another, wherein the user equipment has a priority message corresponding to the discovery resource pool, wherein the processor enables the transceiver to monitor the predefined carrier frequency band and selectively receives discovery messages of other user equipments according to the priority message. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A base station, comprising:
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a transmitter and a receiver, respectively configured to transceive wireless data for communication by one of a plurality of carrier frequency bands; and a processing circuit, operatively coupled to the transmitter and the receiver, wherein the processing circuit enables the receiver to obtain device-to-device communication requests of a plurality of user equipments by the carrier frequency bands, group the user equipments into a plurality of groups according to locations of the plurality of user equipments, and enables the transmitter to allocate a discovery resource pool within a predefined carrier frequency band to the user equipments in a same group, and wherein each of the user equipments has a priority message corresponding to the discovery resource pool and selectively receives the discovery messages according to the priority message. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A discovery method for device-to-device communication for a base station, comprising:
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obtaining device-to-device communication requests of a plurality of user equipments by a plurality of carrier frequency bands, wherein the base station uses one of the carrier frequency bands to communicate with the user equipments; grouping the user equipments into a plurality of groups according to locations of the user equipments; and allocating a discovery resource pool within a predefined carrier frequency band to the user equipments in a same group, wherein each of the user equipments has a priority message corresponding to the discovery resource pool and selectively receives the discovery messages according to the priority message. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A discovery method for device-to-device communication for a user equipment, wherein the user equipment includes a transceiver, the discovery method comprising:
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transmitting a device-to-device communication request of the user equipment to a base station by the transceiver; obtaining an resource pool message from the base station by the transceiver, wherein the resource pool message is configured to allocate a discovery resource pool of a predefined carrier frequency band to the user equipment in a group, and the user equipments in the group are geographically close to one another; transmitting a discovery message of the user equipment in the discovery resource pool by the transceiver, wherein the user equipment has a priority message corresponding to the discovery resource pool; and monitoring the predefined carrier frequency band and selectively receiving discovery messages of other user equipments according to the priority message. - View Dependent Claims (34, 35)
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Specification