LTE无线通信系统中,终端的MAC层向基站上报的发射功率余量。UE功率余量报告过程是为了向服务eNB提供UE所谓最大传输功率与当前UL-SCH传输功率估计值之间的差异信息。
协议描述如下:
The Power Headroom reporting procedure is used to provide the serving eNB with information about the difference between the nominal UE maximum transmit power (在下面36.101中定义)and the estimated power for UL-SCH transmission per activated Serving Cell and also with information about the difference between the nominal UE maximum power and the estimated power for UL-SCH and PUCCH transmission on PCell.
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PHR定义说明.pdf
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