Control of a multi-carrier power amplifier
AssigneeNokia Corporation
InventorWilliam Shurvinton
Life of this patent
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Abstract
A method of operating a Time Division Multiple Access (TDMA) communication system is disclosed. The system includes a multi-carrier power amplifier. The method includes the steps of logging call activity on each timeslot of each carrier associated with the multi-carrier power amplifier; logging total transmit power of the multi-carrier power amplifier for each timeslot; and logging the data rate of any data calls being carried by the multi-carrier power amplifier. Transmission power is made available for a new call by reducing the transmission power of a data call.
Claims10
A method of operating a Time Division Multiple Access (TDMA) communication system comprising a multi-carrier power amplifier, comprising the steps of:
- logging call activity on each timeslot of each carrier associated with the multi-carrier power amplifier;
- logging total transmit power of the multi-carrier power amplifier for each timeslot;
- and
- logging the data rate of any data calls being carried by the multi-carrier power amplifier, wherein transmission power is made available for a new call by reducing the transmission power of a data call.
A method as claimed in any one of the preceding claims, wherein the data call currently having the highest data rate has its transmit power reduced before another data call having a lower data rate.
A method as claimed in any one of the previous claims wherein each call has an associated priority level, and a call having a lower priority level has its transmit power level reduced first.
A method as claimed in any one of the previous claims wherein if the multi-carrier power amplifier is not operating at maximum transmit power, but insufficient transmit power is available in any one timeslot, then timeslots are re-allocated such that any available transmit power is re-allocated to a single timeslot.
A method as claimed in any one of the previous claims, wherein the transmit power associated with a data call has a defined minimum value.
A method as claimed in any one of the previous claims, wherein a new call will not be set up if insufficient transmit power is available to support the new call.
A communication system comprising:
- a multi-carrier power amplifier;
- and
- a database comprising:
- information concerning call activity on each timeslot of each carrier associated with the multi-carrier power amplifier;
- information concerning total transmission power of the multi-carrier power amplifier for each timeslot;
- and
- information concerning the data rate of any data calls supported by the multi-carrier power amplifier
- wherein the multi-carrier power amplifier is arranged to reduce the transmission power associated with a data call in order to make transmission power available for a new call.
Dependencies are inferred from the claim text.