초록 ▼

A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated ve

A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated velocity in order to specify a reverse-link transmit power level. The velocity estimation may be performed using a level crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique.

대표청구항 ▼

A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated ve

A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated velocity in order to specify a reverse-link transmit power level. The velocity estimation may be performed using a level crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique. ngth measured by said first remote user terminal. 6. The method of claim 5, further comprising: said first remote user terminal providing said indication to said communication device as information contained in an uplink signal. 7. The method of claim 1, wherein said indication is defined by a relative signal strength of an uplink signal transmitted by said first remote user terminal to said communication device, said relative signal strength measured by said communication device. 8. The method of claim 1, wherein said first interfering source comprises a second remote user terminal in communication with said communication device. 9. The method of claim 8, further comprising: said first and second remote user terminals simultaneously sharing a communication channel comprising a carrier frequency. 10. The method of claim 8, further comprising: said first and second remote user terminals simultaneously using adjacent channels of communication. 11. The method of claim 1, wherein said first interfering source comprises a second remote user terminal, said communication device comprising a first base station coupled to a communication network, said second remote user terminal in communication with a second base station coupled to said network. 12. The method of claim 11, further comprising: said first and second remote user terminals simultaneously sharing a communication channel comprising a carrier frequency. 13. The method of claim 1, further comprising: determining said indication at a predetermined time interval. 14. The method of claim 1, further comprising: said communication device determining said indication upon said communication receiving an uplink signal from said first remote user terminal. 15. The method of claim 1, further comprising: said first remote user terminal receiving a plurality of downlink signals from said communication device; and said first remote user terminal transmitting said indication to said communication device for each of said plurality of downlink signals. 16. A communication device, comprising: an antenna array to transfer uplink signals and downlink signals with a first remote user terminal in communication with the communication device, and to null at least one interfering source; a processor, coupled to the antenna array, to process the uplink and downlink signals transferred between the first remote user terminal and the communication device; and a selector, coupled to the processor, to select a first mode of operation for said communication device when reception quality of said first remote user terminal is below a threshold, and to select a second mode of operation for said communication device when reception quality of said first remote user terminal is above the threshold, the second mode of operation characterized by providing an increased amount of nulling toward the interfering source relative to the amount of nulling directed toward the interfering source in the first mode of operation. 17. The communication device of claim 16, further comprising a signal quality measurement unit to determine the reception quality for the first remote user terminal as a function of a measured strength of an uplink signal received by the antenna array from the first remote user terminal. 18. The communication device of claim 16, wherein the first remote user terminal comprises a signal quality measurement unit to determine the reception quality of a downlink signal received by the first remote user terminal from the communication device. 19. The communication device of claim 16, wherein the amount of nulling is defined by the number of nulls generated by the communication device in the first and second modes of operation, such that the number of null generated by the communication device in the second mode of operation exceeds the number of nulls generated by the communication device in the first mode of operation. 20. The communication device of claim 16, w