Patent ID: 6567459
Filing Date: 2003-05-20
Classification: H04W

Abstract:
A power control method in a mobile communications system in which transmission of a signal of one logical connection over the radio path employs frequency hopping whereby the transmission frequency on the radio connection is changed at specific intervals among at least two hopping frequencies, the power control method comprising:transmitting a signal with a certain transmission power at one of the hopping frequencies from a sending end of the radio connection; determining at the receiving end of the radio connection, based on the quality of the received signal, power adjustment need for the next transmission at the same hopping frequency; transmitting a power adjustment command to the sending end of the radio connection; and adjusting at the sending end of the radio connection transmission power of the next transmission at said hopping frequency according to the received power adjustment command, wherein the transmission power is adjusted on said radio connection from hopping frequency to hopping frequency so that the transmission power of at least one hopping frequency used on the radio connection differs from the transmission power of at least one other hopping frequency used on the same radio connection.