Communication system and communication method using relay terminals
First Claim
Patent Images
1. A cellular communication system, the system comprising:
- a base station;
a target terminal configured to transmit uplink data to the base station or receive downlink data from the base station; and
a plurality of relay terminals configured to cooperatively relay the uplink data/downlink data to one base station/one target terminal, the plurality of relay terminals being grouped into at least one group,wherein the one base station is a single base station, and the one target terminal is a single target terminal, andwherein the plurality of relay terminals are adaptively grouped into at least one group based on at least one of a moving speed, and remaining power of the plurality of relay terminals.
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Abstract
A communication system and a communication method using relay terminals are provided. A communication system includes a base station, a target terminal transmitting uplink data to the base station or receiving downlink data from the base station, and a plurality of relay terminals cooperatively relaying the uplink data/downlink data to the base station/target terminal, the plurality of relay terminals being grouped into at least one group.
13 Citations
28 Claims
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1. A cellular communication system, the system comprising:
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a base station; a target terminal configured to transmit uplink data to the base station or receive downlink data from the base station; and a plurality of relay terminals configured to cooperatively relay the uplink data/downlink data to one base station/one target terminal, the plurality of relay terminals being grouped into at least one group, wherein the one base station is a single base station, and the one target terminal is a single target terminal, and wherein the plurality of relay terminals are adaptively grouped into at least one group based on at least one of a moving speed, and remaining power of the plurality of relay terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A member relay terminal included in a group which consists of a plurality of relay terminals, the member relay terminal comprising:
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a data receiving unit configured to receive downlink data/uplink data transmitted from a single base station of at least one base station/a single target terminal of at least one target terminal; and a data transmission unit configured to transmit the downlink data/uplink data to the single base station/target terminal in cooperation with the plurality of relay terminals included in the group, wherein the plurality of relay terminals are adaptively grouped into at least one group based on at least one of a moving speed, and remaining power of the plurality of relay terminals. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A target terminal, comprising:
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a beacon reception unit configured to receive beacons transmitted from a plurality of relay terminals; a connection establishment unit configured to establish connection with a portion of or all of the plurality of relay terminals in response to the received beacons; and a data transmission/receiving unit configured to receive downlink data of a single base station of at least one base station from the connected relay terminals, or transmit uplink data to the connected relay terminals, wherein the target terminal is a single target terminal, wherein the connected relay terminals cooperatively relay the downlink data/uplink data, and wherein the plurality of relay terminals are adaptively grouped into at least one group based on at least one of a moving speed, and remaining power of the plurality of relay terminals. - View Dependent Claims (23, 24, 25)
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26. A base station, comprising:
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a group management unit configured to group a plurality of relay terminals, and manage the group; a scheduler configured to schedule time slots or frequency bands for the plurality of relay terminals included in the group; and a data transmission/receiving unit configured to transmit downlink data for a single target terminal of at least one target terminal to the plurality of relay terminals included in the group, or receive uplink data transmitted by the single target terminal from the plurality of relay terminals, wherein the base station is a single base station, wherein the plurality of relay terminals included in the group relay the downlink data/uplink data using the scheduled time slots or the frequency bands, and wherein the group management unit configured to group into at least one group based on at least one of a moving speed, and remaining power of the plurality of relay terminals. - View Dependent Claims (27, 28)
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Specification