Relay station, terminal and base station in cellular system, and method for relaying between terminal and base station
First Claim
1. A relay station for relaying between a terminal and a base station, comprising:
- an interference terminal searcher that registers interference terminals to a list of interference terminals, the list identifying at least one terminal that interferes with the relay station;
a resource manager that receives resource allocation information from the base station and identifies an interference resource through the resource allocation information to check an available resource, wherein the interference resource is a resource allocated to the interference terminals registered in the list and the available resource is a resource except the interference resource among resources allocated by the base station; and
a relay resource allocator that allocates at least a portion of the available resource to the terminal.
1 Assignment
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Accused Products
Abstract
Disclosed are a base station, a relay station, and a terminal according to a method for designing a cellular system for improving resource usage efficiency by reducing interference between relay stations and interference between the base station and the relay station. The relay station gets control signals that terminals served by the base station transmit, and registers terminals, levels of the control signals of which are bigger than a predetermined value, to a list of the interference terminals. The relay station checks an interference resource through resource allocation information of the base station, checks an available resource corresponding to a resource except the interference resource among a resource allocated by the base station, and allocates some of the available resource to the terminal.
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Citations
17 Claims
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1. A relay station for relaying between a terminal and a base station, comprising:
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an interference terminal searcher that registers interference terminals to a list of interference terminals, the list identifying at least one terminal that interferes with the relay station; a resource manager that receives resource allocation information from the base station and identifies an interference resource through the resource allocation information to check an available resource, wherein the interference resource is a resource allocated to the interference terminals registered in the list and the available resource is a resource except the interference resource among resources allocated by the base station; and a relay resource allocator that allocates at least a portion of the available resource to the terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for relaying between a terminal and a base station, comprising:
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receiving control signals from terminals served by the base station; registering terminals that transmit control signals having levels larger than a predetermined value to a list of interference terminals; receiving resource allocation information from the base station; identifying an interference resource through the resource allocation information, wherein the interference resource is a resource allocated to the interference terminals; identifying an available resource, wherein the available resource is a resource except the interference resource among resources allocated by the base station; and allocating at least a portion of the available resource to the terminal. - View Dependent Claims (11, 12)
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13. A terminal served by a base station, the terminal comprising:
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an interference relay searcher that writes a list of interference relays, the list identifying at least one relay that interferes with the terminal; a list transmitter that transmits the list of the interference relays to a base station; and a communication unit that obtains at least a portion of resources used by the base station except an interference resource used by the interference relays, and executes data communication with the base station through the obtained resource; wherein the interference relay searcher searches for the interference relays based at least partly on a pilot signal or a preamble transmitted by relays. - View Dependent Claims (14)
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15. A base station for communicating with a terminal through relay of a relay station, comprising:
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an interference terminal list receiver that receives, from the relay station, a list of interference terminals; and a cell resource allocator that identifies an available resource of the relay station through the list and performs resource allocation for the interference terminals so that the available resource of the relay station increases; wherein the cell resource allocator controls communication power for the interference terminals; and wherein the cell resource allocator performs resource allocation for the interference terminals so that the available resource of the relay station increases when a necessary resource for relay of the relay station is greater than the available resource. - View Dependent Claims (16, 17)
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Specification