Nokia Solutions and Networks Oy

Motorola Corporation

William Walsh

Alex P Hirsbrunner

Kirk Ingemunson

Andrew Killen

David R Rodriguez

William Alexander Bucher

Dale E Ray

Peter David Novak

Warren P Berryman

Fredrick J Bontemps

Gary M Segal

Roman S Ebert

Scott J Leahy

A method and apparatus may include activating, by a network node, power of a global-positioning-system receiver or power of an active antenna of the global-positioning-system receiver. The apparatus uses the global-positioning-system receiver to perform synchronization of the apparatus. The method may include receiving at least one measurement, wherein the at least one measurement includes real-time, predictive, or historic data. The method may also include determining a holdover duration based on the at least one measurement. The holdover duration corresponds to a length of time where the power of the global-positioning-system receiver or the power of the active antenna is to be turned off. The method may also include deactivating the power of the global-positioning-system receiver or the power of the active antenna for the holdover duration.

Method and apparatus for reducing energy consumption

A method and apparatus may include activating, by a network node, power of a global-positioning-system receiver or power of an active antenna of the global-positioning-system receiver. The apparatus uses the global-positioning-system receiver to perform synchronization of the apparatus. The method may include receiving at least one measurement, wherein the at least one measurement comprises real-time, predictive, or historic data. The method may also include determining a holdover duration based on the at least one measurement. The holdover duration corresponds to a length of time where the power of the global-positioning-system receiver or the power of the active antenna is to be turned off. The method may also include deactivating the power of the global-positioning-system receiver or the power of the active antenna for the holdover duration.

Systems and techniques for oscillator control are described. A fixed or controlled oscillator feeds a plurality of evenly spaced tap points multiplexed to an output by a multiplexer. A phase change control circuit changes the multiplexer to a new tap point one phase tap at a time, with the change being made when an oscillator clock edge will not be repeated to an output. The phase change control circuit determines when to change the multiplexer setting based on the overflow of an accumulator, which is continuously summing an increment value. The sign of the accumulator increment value determines the direction of the multiplexor updates. The resulting output signal from the multiplexor is a new output frequency related to the oscillator frequency and the accumulator increment value. With a plurality of multiplexer controlled outputs and corresponding phase change control circuits, a plurality of output frequencies can be created from one oscillator.

Digital frequency synthesis

A base station has a processor to generate a Code Division Multiple Access ('CDMA') data frame. The CDMA data frame comprises a plurality of Basic Frames. At least one of the plurality of Basic Frames comprises a vendor-specific field. A modem transports the CDMA data frame over a Universal Mobile Telecommunications System ('UMTS')-compatible link between the base station and a remote head having a transceiver.

Method and apparatus for transporting CDMA traffic over a UMTS-compatible CPRI interface

A method and apparatus is provided for combining a plurality of signals in a digital pipelined signal adder. The method includes the steps of receiving (100) an upstream primary signal in a combiner and error checking 101 the primary signal in the combiner. When the primary signal passes error checking the primary signal is selected (103) and when the primary signal fails error checking a redundant signal is selected (102). The method further includes adding (104) the selected signal and a local input of the plurality of signals within the combiner to produce a downstream primary signal.

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Wilmington, NC, United States of America

William Walsh