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Power limited case signaling

  • US 9,179,423 B2
  • Filed: 10/04/2011
  • Issued: 11/03/2015
  • Est. Priority Date: 10/04/2010
  • Status: Active Grant
First Claim
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1. A method for a user equipment to report a transmission power capability to an e Node B, wherein the user equipment operates in carrier aggregation, the method comprising:

  • determining, by the user equipment, that the transmission power capability of at least one power amplifier of the user equipment reaches at least one defined threshold, andwhen a criterion that transmission power is (MPR (Maximum Power Reduction)+A-MPR (Additional Maximum Power Reduction)) dB below a total maximum transmission power capabilities including power required for all component carriers is satisfied, triggering a generation of a power headroom report based on the determining step,wherein if the power headroom report is triggered according to the criterion, the user equipment does not perform power scaling.

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