PHR(.Power Headroom Report)

LTE無線通信系統(tǒng)中，終端的MAC層向基站上報的發(fā)射功率余量。UE功率余量報告過程是為了向服務(wù)eNB提供UE所謂最大傳輸功率與當(dāng)前UL-SCH傳輸功率估計值之間的差異信息。

協(xié)議描述如下：

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中定義)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定義說明.pdf