Interference mitigation in a wireless communication system
First Claim
1. A method of coordinating operation of a plurality of base stations, comprising:
- transmitting, from a first base station during a first time interval, signals at a first transmission power concurrently with a second base station transmitting signals at a second transmission power, wherein the first and second base stations serve adjacent coverage areas over a first channel, and wherein the first transmission power is greater than the second transmission power; and
reducing transmission power of the first base station to the second transmission power during a second time interval subsequent to the first time interval and concurrently increasing transmission power of the second base station to the first transmission power, wherein the first and second time intervals and the corresponding transmission powers of the first and second base stations repeat according to a predetermined repeating pattern.
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Abstract
The present invention provides a method of interference mitigation in a wireless communication system. The method that may include reducing transmission power associated with at least one first channel provided by at least one first base station associated with at least one corresponding first coverage area adjacent a second coverage area associated with a second base station concurrently with maintaining at least one transmission power associated with the second base station(s). The method may also include increasing the transmission power associated with the first channel(s) provided by the first base station(s) concurrently with reducing at least one transmission power associated with at least one first channel provided by the second base station(s).
26 Citations
20 Claims
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1. A method of coordinating operation of a plurality of base stations, comprising:
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transmitting, from a first base station during a first time interval, signals at a first transmission power concurrently with a second base station transmitting signals at a second transmission power, wherein the first and second base stations serve adjacent coverage areas over a first channel, and wherein the first transmission power is greater than the second transmission power; and reducing transmission power of the first base station to the second transmission power during a second time interval subsequent to the first time interval and concurrently increasing transmission power of the second base station to the first transmission power, wherein the first and second time intervals and the corresponding transmission powers of the first and second base stations repeat according to a predetermined repeating pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of coordinating operation of a plurality of base stations, comprising:
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reducing, during at least one first time interval, transmission power associated with at least one first channel provided by at least one first base station associated with at least one corresponding first coverage area adjacent at least one second coverage area associated with at least one second base station concurrently with maintaining at least one transmission power associated with said at least one second base station; and increasing, during at least one second time interval subsequent to said at least one first time interval, the transmission power associated with said at least one first channel provided by said at least one first base station concurrently with reducing at least one transmission power associated with at least one first channel provided by said at least one second base station, wherein said at least one first time interval and said at least one second time interval are predetermined according to a repeating pattern, wherein a beginning and an end of said at least one first and second time intervals are determined independently by said at least one first base station and said at least one second base station according to free running clocks in said at least one first base station and said at least one second base station, and wherein the free running clocks are not synchronized. - View Dependent Claims (18, 19, 20)
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Specification