Communication system, communication apparatus, communication method and computer program
First Claim
Patent Images
1. A base station in a first cell, the base station comprising:
- a position information holding circuit that stores first position information of each relay station in the first cell;
a backhaul communication circuit that receives second position information of each relay station in a second cell from a second base station in the second cell, the position information holding circuit storing the second position information of each relay station in the second cell;
a relay station frequency assignment circuit that assigns frequency bands for each relay station of the first cell in accordance with the first position information and the second position information;
a notification circuit that notifies the second base station in the second cell of interference information that includes at least a level of interference from the second cell, a level of power for managing radio resources, or the determined frequency bands; and
a scheduling circuit that schedules the radio resources in the first cell according to the interference information, whereineach of the first cell and the second cell include a center region and a boundary region.
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Abstract
By deciding positions of frequencies used via a relay station by a system in advance for assignment of boundary frequencies, frequencies of a central frequency more likely to be affected by the relay station are also mapped by avoiding a signal thereof. Alternatively, an adjacent cell whose central frequency is affected changes depending on a position of the relay station and thus, locations set to be highly likely to interfere with the central frequency of the adjacent cell is reduced by setting a region of the boundary frequencies permitted to the relay station in accordance with the position of the relay station.
22 Citations
19 Claims
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1. A base station in a first cell, the base station comprising:
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a position information holding circuit that stores first position information of each relay station in the first cell; a backhaul communication circuit that receives second position information of each relay station in a second cell from a second base station in the second cell, the position information holding circuit storing the second position information of each relay station in the second cell; a relay station frequency assignment circuit that assigns frequency bands for each relay station of the first cell in accordance with the first position information and the second position information; a notification circuit that notifies the second base station in the second cell of interference information that includes at least a level of interference from the second cell, a level of power for managing radio resources, or the determined frequency bands; and a scheduling circuit that schedules the radio resources in the first cell according to the interference information, wherein each of the first cell and the second cell include a center region and a boundary region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication method, performed by a base station in a first cell, the communication method comprising:
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storing, by a position information holding circuit, first position information of each relay station in the first cell; receiving, by backhaul communication circuit, second position information of each relay station in a second cell from a second base station in the second cell; storing, by the position information holding circuit, the second position information of each relay station of the second cell; assigning, by a relay station frequency assignment circuit, frequency bands for each relay station of the first cell in accordance with the first position information and the second position information; notifying, by a notification circuit of the base station, the second base station in the second cell of interference information that includes at least a level of interference from the second cell, a level of power for managing radio resources, or the determined frequency bands; and scheduling, by a scheduling circuit of the base station, the radio resources in the first cell according to the interference information, wherein each of the first cell and the second cell include a center region and a boundary region. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory computer readable medium storing computer readable instructions that, when executed by a base station in a first cell, the base station including circuitry, causes the base station to:
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store first position information of each relay station in the first cell; receive second position information of each relay station in a second cell from a second base station in the second cell; store the second position information of each relay station in the second cell; assign frequency bands for each relay station of the first cell in accordance with the first position information and the second position information; notify the second base station in the second cell of interference information that includes at least a level of interference from the second cell, a level of power for managing radio resources, or the determined frequency bands; and schedule the radio resources in the first cell according to e interference information, wherein each of the fir t cell and he second cell include a center region and a boundary region. - View Dependent Claims (16, 17, 18, 19)
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Specification