與4G(LTE)網(wǎng)絡(luò)相同，在5G(NR)網(wǎng)絡(luò)中下行采用功率分配，上行采用功率控制的方式，以達(dá)到滿足網(wǎng)絡(luò)的信噪比和誤碼率，降低同頻信道干擾的目的；整理：kangguoying20200623

1.5G(NR)網(wǎng)絡(luò)功率控制

整理：kangguoying20200623

        上行鏈路的功率控制過程決定了不同上行鏈路物理信道(PUCCH、PUSCG)或信號(hào)(SRS、PRACH)的傳輸功率。

在無線系統(tǒng)中通常要求增加或減少UE或移動(dòng)設(shè)備的發(fā)射功率,這就是所謂的上行能量控制。 增加發(fā)射功率以滿足gNB (或基站或eNB)所需的信噪比或誤碼率 ;減少發(fā)射功率以盡量減少5G系統(tǒng)的同頻信道干擾。功率控制有兩種類型：開環(huán)功率控制和閉環(huán)功率控制。整理：kangguoying20200623

•    功率控制模式配置在調(diào)度（Configured Grant）信息單元中；整理：kangguoying20200623

•    調(diào)度信元的“Alpha”值為上行功率控制調(diào)整值；整理：kangguoying20200623

•    在5G(NR)網(wǎng)絡(luò)中功率控制與參數(shù)集、子載波間隔或其他參數(shù)一同更新；整理：kangguoying20200623

•    在2μ 為5G網(wǎng)絡(luò)的參數(shù)集，其中μ取值為0到5；整理：kangguoying20200623

•    在"TPC command"字段指示了功率調(diào)整增加或減少值；整理：kangguoying20200623整理：kangguoying20200623

2.PUSCH共享信道功率控制

        PUSCH共享信道功率控制參數(shù)計(jì)算公式如下：

        通過RRC下發(fā)的功率控制相關(guān)信息單元（取值范圍）：整理：kangguoying20200623

        PUSCH-PowerControl ::=      SEQUENCE {整理：kangguoying20200623
        tpc-Accumulation     ENUMERATED { disabled }整理：kangguoying20200623
        msg3-Alpha      Alpha整理：kangguoying20200623
        p0-NominalWithoutGrant     INTEGER (-202..24)整理：kangguoying20200623
        p0-AlphaSets SEQUENCE (SIZE(1..maxNrofP0-PUSCH-AlphaSets)) OF P0-PUSCH-AlphaSet整理：kangguoying20200623
        pathlossReferenceRSToAddModList     SEQUENCE (SIZE (1..maxNrofPUSCH-PathlossReferenceRSs)) OF PUSCH-PathlossReferenceRS

        pathlossReferenceRSToReleaseList     SEQUENCE (SIZE (1..maxNrofPUSCH-PathlossReferenceRSs)) OF PUSCH-PathlossReferenceRS-Id
        twoPUSCH-PC-AdjustmentStates      ENUMERATED {twoStates}整理：kangguoying20200623
        deltaMCS      ENUMERATED {enabled}整理：kangguoying20200623
        sri-PUSCH-MappingToAddModList      SEQUENCE (SIZE (1..maxNrofSRI-PUSCH-Mappings)) OF SRI-PUSCH-PowerControl
        sri-PUSCH-MappingToReleaseList      SEQUENCE (SIZE (1..maxNrofSRI-PUSCH-Mappings)) OF SRI-PUSCH-PowerControlId}
        P0-PUSCH-AlphaSet ::=      SEQUENCE {整理：kangguoying20200623
        p0-PUSCH-AlphaSetId      P0-PUSCH-AlphaSetId,整理：kangguoying20200623
        p0      INTEGER (-16..15)整理：kangguoying20200623
        alpha      Alpha}整理：kangguoying20200623
        P0-PUSCH-AlphaSetId ::=      INTEGER (0..maxNrofP0-PUSCH-AlphaSets-1)整理：kangguoying20200623
        PUSCH-PathlossReferenceRS ::=     SEQUENCE {整理：kangguoying20200623
        pusch-PathlossReferenceRS-Id      PUSCH-PathlossReferenceRS-Id,整理：kangguoying20200623
        referenceSignal      CHOICE {整理：kangguoying20200623
         ssb-Index      SSB-Index,整理：kangguoying20200623
         csi-RS-Index      NZP-CSI-RS-ResourceId}}整理：kangguoying20200623
         PUSCH-PathlossReferenceRS-Id ::=      INTEGER (0..maxNrofPUSCH-PathlossReferenceRSs-1)
         SRI-PUSCH-PowerControl ::=      SEQUENCE {整理：kangguoying20200623
         sri-PUSCH-PowerControlId      SRI-PUSCH-PowerControlId,整理：kangguoying20200623
         sri-PUSCH-PathlossReferenceRS-Id      PUSCH-PathlossReferenceRS-Id,
         sri-P0-PUSCH-AlphaSetId      P0-PUSCH-AlphaSetId,整理：kangguoying20200623
         sri-PUSCH-ClosedLoopIndex      ENUMERATED { i0, i1 }}整理：kangguoying20200623
         SRI-PUSCH-PowerControlId ::=      INTEGER (0..maxNrofSRI-PUSCH-Mappings-1)
         BetaOffsets ::=      SEQUENCE {整理：kangguoying20200623
         betaOffsetACK-Index1      INTEGER(0..31)整理：kangguoying20200623
         betaOffsetACK-Index2      INTEGER(0..31)
         betaOffsetACK-Index3      INTEGER(0..31)整理：kangguoying20200623
         betaOffsetCSI-Part1-Index1      INTEGER(0..31)
         betaOffsetCSI-Part1-Index2      INTEGER(0..31)整理：kangguoying20200623
         betaOffsetCSI-Part2-Index1      INTEGER(0..31)
         betaOffsetCSI-Part2-Index2      INTEGER(0..31)整理：kangguoying20200623

3.PUCCH控制信道功率控制

        PUCCH共享信道功率控制參數(shù)計(jì)算公式如下：整理：kangguoying20200623

         通過RRC下發(fā)的功率控制相關(guān)信息單元（取值范圍）：整理：kangguoying20200623

         PUCCH-PowerControl ::=    SEQUENCE {
         deltaF-PUCCH-f0    INTEGER (-16..15)整理：kangguoying20200623

         deltaF-PUCCH-f1    INTEGER (-16..15)
         deltaF-PUCCH-f2    INTEGER (-16..15)整理：kangguoying20200623

         deltaF-PUCCH-f3    INTEGER (-16..15)
         deltaF-PUCCH-f4    INTEGER (-16..15)
         p0-Set   SEQUENCE (SIZE (1..maxNrofPUCCH-P0-PerSet)) OF P0-PUCCH整理：kangguoying20200623

         pathlossReferenceRSs   SEQUENCE (SIZE (1..maxNrofPUCCH-PathlossReferenceRSs)) OF PUCCH-PathlossReferenceRS
         twoPUCCH-PC-AdjustmentStates   ENUMERATED {twoStates}...}整理：kangguoying20200623

         P0-PUCCH ::=   SEQUENCE {整理：kangguoying20200623

         p0-PUCCH-Id   P0-PUCCH-Id,
         p0-PUCCH-Value   INTEGER (-16..15)}
         P0-PUCCH-Id ::=    INTEGER (1..8)整理：kangguoying20200623

         PUCCH-PathlossReferenceRS ::=   SEQUENCE {
         pucch-PathlossReferenceRS-Id   PUCCH-PathlossReferenceRS-Id,
         referenceSignal   CHOICE {整理：kangguoying20200623

         ssb-Index   SSB-Index,整理：kangguoying20200623

         csi-RS-Index   NZP-CSI-RS-ResourceId}}

4.SRS參考信號(hào)

        SRS參考信號(hào)功率控制計(jì)算公式如下：整理：kangguoying20200623

        SRS配置信息中的“srs-PowerControlAdjustmentStates"即為功率控制信元整理：kangguoying20200623

5.PRACH信道整理：kangguoying20200623

5.1 PRACH功率控制公式整理：kangguoying20200623

        PRACH信道功率控制公式如下；功率攀升步長(zhǎng)包括在“隨機(jī)接入碼傳輸”（Random Access Preamble transmission）中。整理：kangguoying20200623

5.2 隨機(jī)接入響應(yīng)調(diào)度字段整理：kangguoying20200623

5.3.功率調(diào)整命令（單位Db）整理：kangguoying20200623

原文來自：https://www.rfwireless-world.com/5G  整理：kangguoying20200623