Motorola Corporation

Motorola Mobility LLC

Simon Brusch

Jason Ramsden

Peter Bermingham

Matthew James Dillon

Jonathan Neil Hopkinson

John Mathews

Chris Murphy

Donal O'shaughnessy

Michael Ratford

Olatunde Williams

Trevor Hanna

Michael S Ratford

The invention relates to determining a transmit power in a cellular communication system comprising a cell including an inner zone served by a first carrier and an outer zone. A base station () comprises a receiver () for receiving measurement reports from communication units (). The measurement reports comprise receive characteristics such as receive signal levels. A distribution processor () generates a distribution of the receive characteristics, and a modified transmit power processor () determines a modified transmit power level in response to the distribution. Specifically, a modified transmit power level is determined as the power reduction of a transmit power that will result in a given traffic distribution between the inner zone and the outer zone. the modified transmit power processor () is coupled to a cell transmit power processor () which determines a cell transmit power associated with the first carrier in response to the modified transmit power level. Specifically a maximum transmit power of the first carrier is set to the cell transmit power level.

Method and apparatus for determining a transmit power

The invention relates to a method and apparatus for setting pilot signal transit powers in a CDMA system. Subscriber units () perform pilot signal measurement measurements and transmits these to a receiver (). A processor () determines a ranking factor for each cell () at least partly dependent on the pilot signal measurement and a cell overlap condition of the subscriber unit () during measurements. The processor () ranks the cells () according to the ranking factor, and sets the pilot signal transmit power of at least one cell in response to the ranking of the cells by adjusting a power amplifier (). The cell overlap condition is determined as the handover state of the subscriber unit () or as the number of cells, which can be received by the subscriber unit () during the measurement The invention is applicable to 3rd generation cellular communication systems.

Method and apparatus for setting pilot signal transmit powers

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Swindon, United Kingdom

Simon Brusch