Method and arrangement in a cellular communications system

  • US 8,223,863 B2
  • Filed: 12/18/2008
  • Issued: 07/17/2012
  • Est. Priority Date: 06/05/2008
  • Status: Active Grant
First Claim
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1. A method for transmission output power control in a transmitter for use in cellular telecommunications comprising:

  • setting a pre-defined power mask for at least one of a sub-frame and an Orthogonal Frequency-Division Multiplexing, OFDM, symbol of a signal transmission, wherein the power mask is defined by at least one parameter associated with one or more of the following;

    a starting point of a first power ramp, an ending point of the first power ramp, a starting point of a second power ramp, and an ending point of the second power ramp, wherein the method comprises the steps of;

    adapting at least one of the at least one power mask parameter of the power mask to a signal transmission characteristic of the signal transmission such that depending upon the signal transmission characteristic said first and/or second power ramps are placed either inside or outside the subframe or OFDM symbol, and wherein said transmission characterisic relates to whether any reference symbols will be transmitted in the subframe or OFDM symbol and/or whether any reference symbols will be transmitted in a successive subframe or OFDM symbol, andapplying the adapted power mask to at least one of the sub-frame and the OFDM symbol.

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