Interference control in a cellular communications network
First Claim
1. A method of controlling a communications network, the method comprising, in a first base station of the network:
- determining, using an electronic processor of the first base station, that the first base station is suffering from uncontrolled interference from at least one other base station of the network;
requesting information from the at least one other base station and a plurality of other base stations of the network regarding estimates of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station;
based on information received, at least in part, from the at least one other base station of the network regarding an estimate of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station, selecting a proposed action to mitigate said uncontrolled interference, wherein the estimate of uplink interference comprises an estimate of noise rise contribution of the at least one user equipment device toward the first base station and wherein the estimate of noise rise contribution is calculated based on an uplink transmit power of the at least one user equipment device from which is subtracted a quantity comprising a received downlink signal strength of a pilot signal of the first base station as measured by the at least one user equipment device subtracted from a downlink transmit power of the first base station and wherein a result of the subtraction of the quantity from the uplink transmit power of the at least one user equipment device is divided by a noise floor of the first base station; and
notifying at least one other base station of the selection of the proposed action.
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Accused Products
Abstract
A method of controlling interference in a cellular communications network comprises, in a first base station of the network: determining that the first base station is suffering from uncontrolled interference from at least one other base station of the network; based on information received from at least one other base station of the network regarding estimates of interference caused at the first base station by at least one user equipment device connected to the respective other base station, selecting a proposed action to mitigate said interference; and notifying the respective other base station of the selection of the proposed action.
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Citations
20 Claims
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1. A method of controlling a communications network, the method comprising, in a first base station of the network:
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determining, using an electronic processor of the first base station, that the first base station is suffering from uncontrolled interference from at least one other base station of the network; requesting information from the at least one other base station and a plurality of other base stations of the network regarding estimates of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station; based on information received, at least in part, from the at least one other base station of the network regarding an estimate of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station, selecting a proposed action to mitigate said uncontrolled interference, wherein the estimate of uplink interference comprises an estimate of noise rise contribution of the at least one user equipment device toward the first base station and wherein the estimate of noise rise contribution is calculated based on an uplink transmit power of the at least one user equipment device from which is subtracted a quantity comprising a received downlink signal strength of a pilot signal of the first base station as measured by the at least one user equipment device subtracted from a downlink transmit power of the first base station and wherein a result of the subtraction of the quantity from the uplink transmit power of the at least one user equipment device is divided by a noise floor of the first base station; and notifying at least one other base station of the selection of the proposed action. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer program product comprising code for execution by an electronic processor of a first base station for causing the processor to:
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determine that the first base station is suffering from uncontrolled interference from at least one other base station of a network; request information from the at least one other base station and a plurality of other base stations of the network regarding estimates of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station; based on information received, at least in part, from the at least one other base station of the network regarding an estimate of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station, select a proposed action to mitigate said uncontrolled interference, wherein the estimate of uplink interference comprises an estimate of noise rise contribution of the at least one user equipment device toward the first base station and wherein the estimate of noise rise contribution is calculated based on an uplink transmit power of the at least one user equipment device from which is subtracted a quantity comprising a received downlink signal strength of a pilot signal of the first base station as measured by the at least one user equipment device subtracted from a downlink transmit power of the first base station and wherein a result of the subtraction of the quantity from the uplink transmit power of the at least one user equipment device is divided by a noise floor of the first base station; and notify at least one other base station of the selection of the proposed action. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A first base station for a network, the first base station comprising:
an electronic processor that operates to execute instructions, wherein based on executing the instructions, the first base station operates to; determine that the first base station is suffering from uncontrolled interference from at least one other base station of the network; request information from the at least one other base station and a plurality of other base stations of the network regarding estimates of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station; based on information received, at least in part, from the at least one other base station of the network regarding an estimate of uplink interference caused at the first base station by at least one user equipment device connected to the at least one other base station, select a proposed action to mitigate said uncontrolled interference, wherein the estimate of uplink interference comprises an estimate of noise rise contribution of the at least one user equipment device toward the first base station and wherein the estimate of noise rise contribution is calculated based on an uplink transmit power of the at least one user equipment device from which is subtracted a quantity comprising a received downlink signal strength of a pilot signal of the first base station as measured by the at least one user equipment device subtracted from a downlink transmit power of the first base station and wherein a result of the subtraction of the quantity from the uplink transmit power of the at least one user equipment device is divided by a noise floor of the first base station; and notify at least one other base station of the selection of the proposed action. - View Dependent Claims (16, 17, 18, 19, 20)
Specification