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Methods and apparatus for downlink PDSCH power setting

  • US 20090175371A1
  • Filed: 12/05/2008
  • Published: 07/09/2009
  • Est. Priority Date: 01/07/2008
  • Status: Active Grant
First Claim
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1. A method for calculating traffic-to-pilot ratios at a wireless terminal, the method comprising the steps of:

  • establishing a table for calculating traffic-to-pilot ratios at the wireless terminal in a communication system, with the wireless terminal having a plurality of OFDM symbols available for transmission, a subset of the OFDM symbols being used for transmitting reference signals;

    receiving a reference signal (RS) overhead ratio η

    RS and a traffic-to-pilot ratio PB,k/PRS for certain Orthogonal Frequency Division Multiplexing (OFDM) symbols at the wireless terminal, with PB,k being the Energy Per Resource Element (EPRE) power assigned on the non-RS OFDM symbols, and PRS being the RS power per subcarrier; and

    calculating traffic-to-pilot ratios across different transmission antennas and different OFDM symbols in dependence upon the calculation table and the number of available transmission antennas in the wireless terminal.

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