Coupled uplink/downlink power control and spatial processing with adaptive antenna arrays
First Claim
1. A method in a communication station, comprising:
- receiving an uplink signal of a first transmission power level from a remote communication device;
transmitting a downlink signal to the remote communication device with a signal having a signal quality;
receiving an additional uplink signal of a second transmission power level from the remote communication device;
determining that the second transmission power level differs from the first transmission power level;
adjusting a transmission signal quality in response to determining that the second transmission power level of the remote communication device differs from the first transmission power level, including increasing the signal quality in response to determining that the second transmission power is higher than the first transmission power level; and
transmitting an additional downlink signal to the remote communication device having the adjusted transmission signal quality.
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0 Petitions
Accused Products
Abstract
A wireless communication system includes base stations with adaptive antenna arrays that communicate with remote communication devices. The base stations monitor the power of uplink signals received from user terminals, and generate a downlink array pattern that directs signals toward desired users and directs nulls toward undesired users. A base station will increase the strength of the downlink signals directed to a desired user from which it senses an increasing uplink signal power and will deepen the null directed to an undesired user from which it senses an increasing uplink signal power. The remote devices monitor the quality of downlink signals they receive and increase the power of the uplink signal they transmit in order to improve received downlink signal quality.
248 Citations
20 Claims
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1. A method in a communication station, comprising:
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receiving an uplink signal of a first transmission power level from a remote communication device; transmitting a downlink signal to the remote communication device with a signal having a signal quality; receiving an additional uplink signal of a second transmission power level from the remote communication device; determining that the second transmission power level differs from the first transmission power level; adjusting a transmission signal quality in response to determining that the second transmission power level of the remote communication device differs from the first transmission power level, including increasing the signal quality in response to determining that the second transmission power is higher than the first transmission power level; and transmitting an additional downlink signal to the remote communication device having the adjusted transmission signal quality. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communication station comprising:
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an adaptive antenna array to transmit downlink signals and receive uplink signals from a remote communication device; and an antenna controller coupled to the antenna array to determine if a received uplink signal differs in transmission power from a previously received uplink signal, and adjust a signal quality for a downlink signal to be transmitted from the antenna array, the signal quality adjustment in response to determining that the received downlink signal differs in signal quality from the previously received downlink signal, including increase the signal quality for the downlink signal in response to determining that the transmission power of the received uplink signal is higher than the transmission power of the previously received uplink signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for wireless communication between a communication station and a remote communication device, comprising:
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receiving a downlink signal at the remote communication device from the communication station and measuring a signal quality of the received downlink signal; determining that the signal quality of the received downlink signal differs from a signal quality of a previous downlink signal; autonomously setting a second uplink transmission power level at the remote communication device, different from a first uplink transmission power level, in response to the measured signal quality of the previous downlink signal differing from the received downlink signal, the second uplink transmission power level higher than the first uplink transmission power level if the signal quality of the received downlink signal is lower than the signal quality of the previous downlink signal, and lower than the first uplink transmission power level if the signal quality of the received downlink signal is higher than the signal quality of the previous downlink signal; and transmitting an uplink signal to the communication station at the second uplink transmission power level to cause an autonomous adjustment of a downlink signal pattern at the communication station, the adjustment to increase downlink signal precision toward the remote communication device if the second uplink transmission power level is higher than the first uplink transmission power level, and decrease downlink signal precision toward the remote communication device if the second uplink transmission power level is lower than the first uplink transmission power level. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification