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US 6,556,838 B1Granted
Radio communication system
AssigneeKoninklijke Philips Electronics N.V.
InventorsMatthew P. J. Baker, Timothy J. Moulsley, Bernard Hunt
Life of this patent
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AssigneeKoninklijke Philips Electronics N.V.
InventorsMatthew P. J. Baker, Timothy J. Moulsley, Bernard Hunt
Estimating the term…
In a radio communication system having a primary station and plurality of secondary stations, power of uplink and downlink channels between the primary station and a secondary station is controlled in a closed loop manner by each station transmitting power control commands to the other station. Responsive to these commands receiving station adjusts its output power in steps. By considering a plurality of received power control commands receiving station may emulate the ability to use power control step sizes other than those it directly implements, for example step sizes smaller than its minimum or intermediate between implemented step sizes. Performance can thereby be improved under certain channel conditions. In one embodiment when required power control step size is less than the minimum step size of the receiving station, that station processes a group of power control commands to determine whether to adjust its output power by its minimum step size.
A radio communication system having a communication channel between a primary station and a secondary station, one of the primary and secondary stations (the transmitting station) having means for transmitting power control commands to the other station (the receiving station) to instruct it to adjust its output transmission power, wherein the receiving station has emulation means for emulating an unsupported power control step size by a combination of power control steps of at least one supported size.
A primary station for use in a radio communication system having a communication channel between the primary station and a secondary station, the primary station having means for adjusting its output transmission power in steps in response to power control commands transmitted by the secondary station, wherein emulation means are provided for emulating an unsupported power control step size by a combination of power control steps of at least one supported size.
A secondary station for use in a radio communication system having a communication channel between the secondary station and a primary station, the secondary station having means for adjusting its output transmission power in steps in response to power control commands transmitted by the primary station, wherein emulation means are provided for emulating an unsupported power control step size by a combination of power control steps of at least one supported size.
A method of operating a radio communication system having a communication channel between the primary station and a secondary station, the method comprising one of the primary and secondary stations (the transmitting station) transmitting power control commands to the other station (the receiving station) to instruct it to adjust its power in steps, wherein the receiving station emulates an unsupported power control step size by a combination of power control steps of at least one supported size.
Dependencies are inferred from the claim text.