根據(jù)TS 38.211 4.4.5 一個(gè)載波帶寬(BWP)定義為: 載波帶寬是一組連續(xù)的物理資源塊(PRB),它是根據(jù)公共資源塊的連續(xù)子集中為給定載波上的數(shù)字集(u)選擇。整理:kangguoying20200805
1.5G(NR)網(wǎng)絡(luò)中載波帶寬(BWP)
在DL和UL中終端分配最多4個(gè)BWP。 下面只是一個(gè)例子,其中帶寬為3BWP。 (注: CRB代表載波資源塊,從載波帶的一端到另一端進(jìn)行編號(hào)(全局資源塊) ,PRB代表物理資源塊,是每個(gè)BWP中編號(hào)的資源塊)。整理:kangguoying20200805
上圖中:Point A 表示資源塊網(wǎng)格的一個(gè)共同參考點(diǎn),由38.211-4.4.4.2中描述的下列較高層參數(shù)獲得,其中:
Pcell 下行鏈路中的 prb-index-dl-common 表示初始單元選擇所使用的SS/PBCH塊的最低資源塊的點(diǎn) A 和最低子載波之間的頻率偏移;
在成對(duì)頻譜中,Pcell 上行鏈路的 prb-index-ul-common 表示基于SIB1中指示的上行鏈路的ARFCN的點(diǎn)A和頻率位置之間的頻率偏移;整理:kangguoying20200805
未配成對(duì)頻譜中Pcell 上行鏈路的 prb-index-ul-common 表示初始小區(qū)選擇所使用的SS/PBCH塊的最低重傳塊中A點(diǎn)和最低副載波之間的頻偏;整理:kangguoying20200805
專用于Scell 下行鏈路的 prb-index-dl 表示在較高層 Scell 配置中基于ARFCN的點(diǎn)A和頻率位置之間的頻率偏移;
Scell 上行鏈路的 prb-index-ul-dedicated 表示更高層 Scell配置中基于ARFCN的點(diǎn)A和頻率位置之間的頻率偏移;
附加上行鏈路(SUL)的 prb-index-sul-common 表示在更高層的SUL配置中基于ARFCN的點(diǎn)A 和頻率位置之間的頻率偏移.
2.下行和上行載波帶寬分配
2.1 下行(Downlink)
l 一個(gè) UE可以配置最多4個(gè)載波帶寬部分(BWP),每個(gè)BW的帶寬應(yīng)該等于或大于SS 塊 BW,但它可能包含或不包含SS塊。
l 在同一時(shí)間內(nèi),只有一個(gè)載波帶寬部分(BWP)可以處于激活狀態(tài)整理:kangguoying20200805
在活動(dòng)帶寬部分之外,UE不期望接收PDSCH、PDCCH、CSI-RS 或TRS。整理:kangguoying20200805
l 每個(gè)DL BWP包含至少一個(gè)可重置的特定搜索空間(USS)。整理:kangguoying20200805
l 在主載波中至少一個(gè)已配置的DL BWPs 包含一個(gè)帶公共搜索空間(CSS的 coreset;
2.2 上行(Uplink)整理:kangguoying20200805
· 一個(gè) UE可以配置最多4個(gè)載波帶寬部分(BWP),整理:kangguoying20200805
· 在同一時(shí)間內(nèi),只有一個(gè)載波帶寬部分(BWP)可以處于激活狀態(tài)
· 如果一個(gè)UE配置了一個(gè)補(bǔ)充上行(SUL),整理:kangguoying20200805
· 這個(gè) ue 還可以配置最多四個(gè)載波帶寬部分的補(bǔ)充上行,整理:kangguoying20200805
· 只有一個(gè)載波帶寬部分可以在同一激活,整理:kangguoying20200805
UE不能在激活的帶寬部分(BWP)之外傳遞 PUSCH或PUCCH; 整理:kangguoying20200805
3. CRB與PRB之間的映射
nCRB表示公共資源塊中的資源塊位置,nPRB表示特定載波帶寬部分中的資源塊。 換言之,你可以認(rèn)為nCRB是絕對(duì)(參考)坐標(biāo)系中的一個(gè)位置,而 nPRB是相對(duì)坐標(biāo)系中的位置。Ncrb 與nPRB的關(guān)系定義如下(38.211 v2.0.0-4.4.4.4)。整理:kangguoying20200805
4.RRC中有關(guān)BWP配置
ServingCellConfig ::= SEQUENCE {整理:kangguoying20200805
tdd-UL-DL-ConfigurationDedicated TDD-UL-DL-ConfigDedicated OPTIONAL,-- Cond TDD整理:kangguoying20200805
initialDownlinkBWP BWP-DownlinkDedicated OPTIONAL, -- Cond ServCellAdd
downlinkBWP-ToReleaseList SEQUENCE (SIZE (1..maxNrofBWPs)) OF BWP-Id OPTIONAL,
downlinkBWP-ToAddModList SEQUENCE (SIZE (1..maxNrofBWPs)) OF BWP-Downlink OPTIONAL
firstActiveDownlinkBWP-Id BWP-Id OPTIONAL, -- Need R整理:kangguoying20200805
bwp-InactivityTimer ENUMERATED {ms2, ms3, ms4, ms5, ms6, ms8, ms10, ms20, ms30, ms40,ms50, ms60, ms80, ms100, ms200, ms300, ms500, ms750, ms1280, ms1920, ms2560, spare10, spare9, spare8, spare7, spare6,
spare5, spare4, spare3, spare2, spare1 } OPTIONAL, 整理:kangguoying20200805
defaultDownlinkBWP-Id BWP-Id OPTIONAL, -- Need M整理:kangguoying20200805
uplinkConfig UplinkConfig OPTIONAL, -- Cond ServCellAdd-UL整理:kangguoying20200805
supplementaryUplink UplinkConfig OPTIONAL, -- Cond ServCellAdd-SUL整理:kangguoying20200805
pdsch-ServingCellConfig SetupRelease { PDSCH-ServingCellConfig } OPTIONAL, -- Need M
csi-MeasConfig SetupRelease { CSI-MeasConfig } OPTIONAL, -- Need M整理:kangguoying20200805
carrierSwitching SetupRelease { SRS-CarrierSwitching} OPTIONAL, -- Need M
sCellDeactivationTimer ENUMERATED {ms20, ms40, ms80, ms160, ms200, ms240, ms320, ms400, ms480, ms520, ms640, ms720, ms840,ms1280, spare2,spare1} OPTIONAL,-- Cond 整理:kangguoying20200805
UplinkConfig ::= SEQUENCE {整理:kangguoying20200805
initialUplinkBWP BWP-UplinkDedicated OPTIONAL, -- Cond ServCellAdd.整理:kangguoying20200805
uplinkBWP-ToReleaseList SEQUENCE (SIZE (1..maxNrofBWPs)) OF BWP-Id OPTIONAL,-- Need N
uplinkBWP-ToAddModList SEQUENCE (SIZE (1..maxNrofBWPs)) OF BWP-Uplink OPTIONAL,
firstActiveUplinkBWP-Id BWP-Id OPTIONAL, -- Need R整理:kangguoying20200805
pusch-ServingCellConfig SetupRelease { PUSCH-ServingCellConfig } OPTIONAL, ...}
BWP-Downlink ::= SEQUENCE {整理:kangguoying20200805
bwp-Common BWP-DownlinkCommon 整理:kangguoying20200805
bwp-Dedicated BWP-DownlinkDedicated ...}
BWP-DownlinkCommon ::= SEQUENCE {整理:kangguoying20200805
genericParameters BWP,整理:kangguoying20200805
pdcch-ConfigCommon SetupRelease { PDCCH-ConfigCommon }
pdsch-ConfigCommon SetupRelease { PDSCH-ConfigCommon } ...}
BWP-DownlinkDedicated ::= SEQUENCE {整理:kangguoying20200805
pdcch-Config SetupRelease { PDCCH-Config }
pdsch-Config SetupRelease { PDSCH-Config }
sps-Config SetupRelease { SPS-Config }整理:kangguoying20200805
radioLinkMonitoringConfig SetupRelease { RadioLinkMonitoringConfig } ...}
BWP-Uplink ::= SEQUENCE {
bwp-Id BWP-Id,整理:kangguoying20200805
bwp-Common BWP-UplinkCommon
bwp-Dedicated BWP-UplinkDedicated }
BWP-UplinkCommon ::= SEQUENCE {整理:kangguoying20200805
genericParameters BWP,整理:kangguoying20200805
rach-ConfigCommon SetupRelease { RACH-ConfigCommon }
pusch-ConfigCommon SetupRelease { PUSCH-ConfigCommon }
pucch-ConfigCommon SetupRelease { PUCCH-ConfigCommon }
BWP-UplinkDedicated ::= SEQUENCE {整理:kangguoying20200805
pucch-Config SetupRelease { PUCCH-Config } OPTIONAL,--Need M
pusch-Config SetupRelease { PUSCH-Config } OPTIONAL,--Need M
configuredGrantConfig SetupRelease { ConfiguredGrantConfig } OPTIONAL,--Need M
srs-Config SetupRelease { SRS-Config } OPTIONAL,--Need M
beamFailureRecoveryConfig SetupRelease { BeamFailureRecoveryConfig } OPTIONAL,--Need M ...}
BWP ::= SEQUENCE {整理:kangguoying20200805
locationAndBandwidth INTEGER (0..37949),
subcarrierSpacing SubcarrierSpacing,整理:kangguoying20200805
cyclicPrefix ENUMERATED { extended } }
原文來自:http://www.sharetechnote.com/ 整理:kangguoying20200805