Multiplex communications – Channel assignment techniques – Combining or distributing information via code word channels...
Reexamination Certificate
2005-06-28
2005-06-28
Phan, Man U. (Department: 2665)
Multiplex communications
Channel assignment techniques
Combining or distributing information via code word channels...
C370S347000
Reexamination Certificate
active
06912228
ABSTRACT:
The present invention employs a power control methodology that adapts to the transmission load associated with communications between a base station and a mobile terminal. In one example embodiment, the base station gradually adjusts the power data transmitted to the mobile terminal based on that associated transmission load. As a result, radio channel quality measurements influenced by that base station data transmission to the mobile terminal are not significantly affected by the transmit power adjustment. In other words, the rate at which the transmit power is changed is slower than the rate at which mobile stations measure channel quality. For example, mobile terminals may detect a signal-to-interference ratio every time slot and use that quality measurement for purposes of selecting a maximum transmission rate for the next time slot. The transmit power might be changed by an incremental amount once every ten time slots. By only gradually changing the base station transmit power, the accuracy of the mobile terminal channel quality estimates is not significantly affected. Moreover, if there is a relatively low transmission load, the base station does not waste resources or generate unnecessary interference by transmitting at maximum power.
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Dahlman Erik
Parkvall Stefan
Nguyen Toan
Nixon & Vanderhye P.C.
Phan Man U.
Telefonaktiebolaget L M Ericsson (publ)
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