Alcatel Lucent

Yuan-Rong Shen

Dongzhe Cui

I-Fong Antonio Wu

An open loop power control method for setting a transmit power of mobile station () during a handoff from a voice over Internet protocol (VoIP) service to a circuit switched service sets a transmit power of the mobile station based upon a power level associated with the VoIP call. A disclosed example includes using an average power level of a reverse pilot channel of the VoIP call and correction factors based upon forward link and reverse link parameters during the VoIP call.

Power control for handoffs between voice over internet protocol and circuit switched calls

A wireless communication network () includes a power control technique that includes repeating an erasure indicator bit in a transmission from a mobile station () to a base station (). The repeated erasure indicator bit is transmitted on the uplink to each base station. The base station then uses the majority rule of those repeated erasure indicator bits to adjust its transmit power. It results in a desired power control command corresponding to the quality of a downlink between a base station () and the mobile station (). A disclosed example includes using the repeated error indicator bit for deciding whether a recent frame should be considered an erasure. If so, the base station increases power on the downlink forward channel. If not, the base station decreases the transmit power on the downlink forward channel. A disclosed example includes alternative power control adjustment techniques, depending on the recent history of the quality of the downlink.

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Randolph, NJ, United States of America

Yuan-Rong Shen