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Method of efficiently reporting user equipment transmission power and apparatus thereof

  • US 9,648,571 B2
  • Filed: 03/20/2015
  • Issued: 05/09/2017
  • Est. Priority Date: 02/21/2011
  • Status: Active Grant
First Claim
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1. A method by a user equipment (UE) in a wireless communication system, the method comprising:

  • receiving configuration information comprising a prohibit power headroom report (PHR) timer for a PHR and information indicating whether a PHR format for the UE is an extended PHR from a base station;

    identifying whether the PHR format for the UE is the extended PHR based on the configuration information;

    triggering, when the prohibit PHR timer is expired and the PHR format is the extended PHR, the PHR including a maximum transmission power generated based on a power management-maximum power reduction (P-MPR), a range between a upper bound of the maximum transmission power and a lower bound of the maximum transmission power and an indicator indicating whether the UE applies the P-MPR and transmitting the extended PHR to the base station; and

    triggering, when the prohibit PHR timer is expired and the PHR format is not the extended PHR format, a normal PHR without the indicator and transmitting the normal PHR to the base station,wherein the indicator is set to 1 if the maximum transmission power is different from a maximum transmission power not applying a power back-off due to the power management.

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