Mobile station apparatus, communication system, communication method and program

Abstract

A mobile station (MS) communicates with a base station using a plurality of component frequency bands, each band of the plurality of component frequency bands being a band having a predetermined frequency bandwidth. The MS sets up an upper limit value of transmission power (TP) of each component frequency band in accordance with the number of component frequency bands to which radio resources are allocated at a time. The MS also adjusts the TP of each component frequency band based on the upper limit value of TP set at the controller, wherein the adjusting of the TP is according to the following formula: min{[the upper limit value of the average TP of each uplink component frequency band],10 log 10 ([the number of allocated uplink resource block pairs])+[Reference TP control value]+[Coefficient multiplied with pass loss]×[Pass loss]+[Modulation scheme-dependent power offset value]+[TP control value]}.

1 . A mobile station apparatus that is configured to and/or programmed to perform communications with a base station apparatus using a plurality of component frequency bands, each band of the plurality of component frequency bands being a band having a predetermined frequency bandwidth, the mobile station apparatus comprising:
 a controller configured to and/or programmed to set up an upper limit value of transmission power of each component frequency band in accordance with the number of component frequency bands to which radio resources are allocated at a time; and   a transmission processor configured to and/or programmed to adjust the transmission power of each component frequency band based on the upper limit value of transmission power set at the controller, wherein the adjusting of the transmission power is according to the following formula:
   min{[the upper limit value of the average transmission power of each uplink component frequency band],10 log 10 ([the number of allocated uplink resource block pairs])+[Reference transmission power control value]+[Coefficient multiplied with pass loss]×[Pass loss]+[Modulation scheme-dependent power offset value]+[Transmission power control value]}.
 
   
     
     
         2 . The mobile station apparatus according to  claim 1 , wherein the controller is configured to and/or programmed to set the upper limit value of transmission power at a lower value as the number of component frequency bands to which radio resources are allocated at a time increases. 
     
     
         3 . The mobile station apparatus according to  claim 1 , further comprising:
 a reception unit configured to and/or programmed to receive, from the base station apparatus, information relating to the upper limit value of transmission power of each component frequency band, depending on the number of component frequency bands to which radio resources are allocated at a time.   
     
     
         4 . The mobile station apparatus according to  claim 1 , wherein the controller is configured to and/or programmed to set up the upper limit value of transmission power of each component frequency band such that the upper limit value of the average transmission power of each uplink component frequency band decreases as a number of component frequency bands increases.