Method for controlling interference in femto cell deployments
First Claim
1. One or more computer-readable storage memories embodying processor-executable instructions which, responsive to execution by at least one processor, are configured to:
- identify, using a femto cell in a wireless communication network, a plurality of preselected wireless signal carriers based on a predefined geographical area;
measure, using the femto cell, initial power levels for the wireless signal carriers provided in the predefined geographical area;
select, using the femto cell, one of the wireless signal carriers based on predefined criteria associated with the measured initial power level; and
adjust, using the femto cell, a transmission power level of a femto transmitter associated with the femto cell based on a communication placed to a mobile terminal.
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Accused Products
Abstract
A method and system provide a plurality of femto cells that are deployed within a macro cell of cellular network. The femto cells improve cellular service inside structures, such as residential and commercial structures. Femto base stations convert signals between an airlink-interface and core network to enable data communication between the mobile terminal and an access network to occur through the Internet and a public switched telephone network. The femto base stations are independent of each other and the macro cell. The method and system provide the femto base stations with interference awareness and mitigation techniques to minimize interference with the cellular network.
19 Citations
20 Claims
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1. One or more computer-readable storage memories embodying processor-executable instructions which, responsive to execution by at least one processor, are configured to:
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identify, using a femto cell in a wireless communication network, a plurality of preselected wireless signal carriers based on a predefined geographical area; measure, using the femto cell, initial power levels for the wireless signal carriers provided in the predefined geographical area; select, using the femto cell, one of the wireless signal carriers based on predefined criteria associated with the measured initial power level; and adjust, using the femto cell, a transmission power level of a femto transmitter associated with the femto cell based on a communication placed to a mobile terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. One or more computer-readable storage memories embodying processor-executable instructions which, responsive to execution by at least one processor, are configured to enable a device to:
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identify, using a femto cell in a wireless communication network, a plurality of preselected wireless signal carriers based on a predefined geographical area; measure, using the femto cell, initial power levels for the wireless signal carriers provided in the predefined geographical area; select, using the femto cell, one of the wireless signal carriers based on predefined criteria associated with the measured initial power level; establish, using the femto cell, a transmission power level of a femto transmitter associated with the femto cell; request, using the femto cell, a pilot strength measurement from an associated target mobile device; receive, using the femto cell, said requested pilot strength measurements from the target mobile device; responsive to determining that said received pilot strength measurement exceeds a predefined threshold, repeat, using the femto cell, said requesting and receiving pilot strength measurements from the target mobile until a received pilot strength measurement falls below a predefined threshold value; and responsive to determining that said received pilot strength measurement falls below the predefined threshold, maintain a transmission power associated with said received pilot strength measurement below the predefined threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A computer implemented method comprising:
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identifying, using a femto cell in a wireless communication network, a plurality of preselected wireless signal carriers based on a predefined geographical area; measuring, using the femto cell, initial power levels for the wireless signal carriers provided in the predefined geographical area; selecting, using the femto cell, one of the wireless signal carriers based on predefined criteria associated with the measured initial power level; establishing, using the femto cell, a transmission power level of a femto transmitter associated with the femto cell; requesting, using the femto cell, a pilot strength measurement from an associated target mobile device; receiving, using the femto cell, said requested pilot strength measurements from the target mobile device; responsive to determining that said received pilot strength measurement exceeds a predefined threshold, repeating, using the femto cell, said requesting and receiving pilot strength measurements from the target mobile until a received pilot strength measurement falls below a predefined threshold value; and responsive to determining that said received pilot strength measurement falls below the predefined threshold, maintaining a transmission power associated with said received pilot strength measurement below the predefined threshold. - View Dependent Claims (20)
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Specification