Interference compensation in uplink power control

摘要

A method and a satellite terminal are provided. The satellite terminal may range over multiple frequencies and may receive, from a satellite gateway, a signal quality indicator with respect to each of the ranged multiple frequencies. Noise and interference for a corresponding frequency are estimated based on at least one of the received signal quality indicators for the corresponding frequency. Path loss is estimated based on multiple received signal quality indicators, each of which is received in response to the satellite terminal transmitting a signal while not performing the ranging process. A transmit power level of the satellite terminal is adjusted for the corresponding frequency based on the estimated path loss and the estimated noise and interference for the corresponding frequency.

主权项

1. A method for use by a satellite terminal to compensate for noise and interference in a Kurz above Ka band satellite system, the method comprising:
for each respective frequency of a plurality of frequencies, performing a ranging process comprising:
transmitting a ranging signal over the respective frequency from the satellite terminal,receiving, at the satellite terminal from a satellite gateway, a respective signal quality indicator in response to the transmitting of the ranging signal over the respective frequency,adjusting a transmit power on the respective frequency at the satellite terminal based on a difference between the respective signal quality indicator and a signal quality target,repeating the transmitting of the ranging signal, the receiving of the respective signal quality indicator, and the adjusting of the transmit power until the difference between the received respective signal quality indicator and the signal quality target is within a predefined tolerance, andstoring a value representing the adjusted transmission power as a ranged power setting at the respective frequency in a vector of ranged power settings for the plurality of frequencies when the difference between the received respective signal quality indicator and the signal quality target is within the predefined tolerance, wherein: estimated noise and interference levels for the plurality of frequencies are based on relative variations in the vector of the ranged power settings.