为终端(UE)进行5G资源分配的SLIV

为终端(UE)进行5G资源分配的SLIV\o"5G"#5G\o"UE"#UE\o"PDSCU"#PDSCU\o"PUSCH"#PUSCH\o"SLIV"#SLIV5G(NR)网络中为每个终端(UE)调度的资源不仅包括时隙(TS)，还有时隙内的符号(OFDM)；

*4G(LTE)网络中的资源仅是子帧级别的调度。在5G(NR)网络中通过DCI调度时，终端根据PDSCH中DCI分配的字段值m，按照分配表提供行索引m+1去接收(发送)数据。其索引行定义了为终端(UE)分配的时隙偏移量K0、起始和长度指示符SLIV；也可以直接定义起始符号S和分配长度L及在PDSCH接收中假定的PDSCH映射类型。一、终端起始分配符号和长度SLIV(StartandLengthIndicator)是网络为终端在PDSCH时域上分配的起始和长度指示。SLIV中还定义了使用SingleNumber分配PDSCH起始符号和连续的符号数量。通常SLIV中包括两个数量:起始符号S和长度L。根据TS38.214定义SLIV中为终端分配的起始符号和连续符号数计算公式如下：

if(L-1)<=7then

SLIV=14x(L-1)+S

除非

SLIV=14x(14-L+1)+(14-1-S)

此处0<L<=14-S

S=StartSymbolIndex(起始符号指示）

L=NumberofConsecutiveSymbols（连续符号数）1.1R15版本分配表根据该公式可创建一个包含可能S和L值的大表格。尽管并非所有组合都被视为有效，允许满足下表中条件的组合均适用；该表在R15中定义如下：<

38.214-Table-1:ValidSandLcombinations

>

<

38.214-Table-1:ValidSandLcombinations

>1.2R16版本分配表在R16中对起始符号和长度进行了更改，具体见下表:<38.214V16.4.0-Table-1:ValidSandLcombinations><38.214V16.4.0-Table-1:ValidSandLcombinations>二、RRC消息中的SLIV终端通过上表得到的PDSCH/PUSCH资源是通过RRC消息获悉的，消息内容如下:PDSCH-TimeDomainResourceAllocation::=

SEQUENCE{

k0

INTEGER(1..3)

mappingType

ENUMERATED{typeA,typeB},

startSymbolAndLength

BITSTRING(SIZE(7))

//SLIV}

PUSCH-TimeDomainResourceAllocation::=

SEQUENCE{

k2

INTEGER(0..7)

mappingType

ENUMERATED{typeA,typeB},

startSymbolAndLength

BITSTRING(SIZE(7))

//SLIV}

三、

SLIV值查询表

根据

SLIV公式和TS38.214-Table-1，SLIV值可通过下表进行查询。在表中可以查到唯一的(S,L)对值。SLL-1Last

SymbolSLIVValidMappingType

(NormalCP)

PDSCHValidMappingType

(NormalCP)

PUSCH01000TypeB21114TypeBTypeB32228TypeATypeB43342TypeA,TypeBTypeA,TypeB54456TypeATypeA,TypeB65570TypeATypeA,TypeB76684TypeA,TypeBTypeA,TypeB87798TypeATypeA,TypeB98897TypeATypeA,TypeB109983TypeATypeA,TypeB11101069TypeATypeA,TypeB12111155TypeATypeA,TypeB13121241TypeATypeA,TypeB14131327TypeATypeA,TypeB11011TypeB21215TypeBTypeB32329TypeATypeB43443TypeA,TypeBTypeB54557TypeATypeB65671TypeATypeB76785TypeA,TypeBTypeB87899TypeATypeB98996TypeATypeB1091082TypeATypeB11101168TypeATypeB12111254TypeATypeB13121340TypeATypeB21022TypeB21316TypeBTypeB32430TypeATypeB43544TypeA,TypeBTypeB54658TypeATypeB65772TypeATypeB76886TypeA,TypeBTypeB879100TypeATypeB981095TypeATypeB1091181TypeATypeB11101267TypeATypeB12111353TypeATypeB31033TypeB21417TypeBTypeB32531TypeATypeB43645TypeA,TypeBTypeB54759TypeATypeB65873TypeATypeB76987TypeA,TypeBTypeB8710101TypeATypeB981194TypeATypeB1091280TypeATypeB11101366TypeATypeB41044TypeB21518TypeBTypeB32632TypeB43746TypeBTypeB54860TypeB65974TypeB761088TypeBTypeB8711102TypeB981293TypeB1091379TypeB51055TypeB21619TypeBTypeB32733TypeB43847TypeBTypeB54961TypeB651075TypeB761189TypeBTypeB8712103TypeB981392TypeB61066TypeB21720TypeBTypeB32834TypeB43948TypeBTypeB541062TypeB651176TypeB761290TypeBTypeB8713104TypeB71077TypeB21821TypeBTypeB32935TypeB431049TypeBTypeB541163TypeB651277TypeB761391TypeBTypeB81088TypeB21922TypeBTypeB321036TypeB431150TypeBTypeB541264TypeB651378TypeB91099TypeB211023TypeBTypeB321137TypeB431251TypeBTypeB541