為終端(UE)進(jìn)行5G資源分配的SLIV

為終端(UE)進(jìn)行5G資源分配的SLIV\o"5G"#5G\o"UE"#UE\o"PDSCU"#PDSCU\o"PUSCH"#PUSCH\o"SLIV"#SLIV5G(NR)網(wǎng)絡(luò)中為每個(gè)終端(UE)調(diào)度的資源不僅包括時(shí)隙(TS)，還有時(shí)隙內(nèi)的符號(hào)(OFDM)；

*4G(LTE)網(wǎng)絡(luò)中的資源僅是子幀級(jí)別的調(diào)度。在5G(NR)網(wǎng)絡(luò)中通過(guò)DCI調(diào)度時(shí)，終端根據(jù)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(發(fā)送)數(shù)據(jù)。其索引行定義了為終端(UE)分配的時(shí)隙偏移量K0、起始和長(zhǎng)度指示符SLIV；也可以直接定義起始符號(hào)S和分配長(zhǎng)度L及在PDSCH接收中假定的PDSCH映射類型。一、終端起始分配符號(hào)和長(zhǎng)度SLIV(StartandLengthIndicator)是網(wǎng)絡(luò)為終端在PDSCH時(shí)域上分配的起始和長(zhǎng)度指示。SLIV中還定義了使用SingleNumber分配PDSCH起始符號(hào)和連續(xù)的符號(hào)數(shù)量。通常SLIV中包括兩個(gè)數(shù)量:起始符號(hào)S和長(zhǎng)度L。根據(jù)TS38.214定義SLIV中為終端分配的起始符號(hào)和連續(xù)符號(hào)數(shù)計(jì)算公式如下：

if(L-1)<=7then

SLIV=14x(L-1)+S

除非

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

此處0<L<=14-S

S=StartSymbolIndex(起始符號(hào)指示）

L=NumberofConsecutiveSymbols（連續(xù)符號(hào)數(shù)）1.1R15版本分配表根據(jù)該公式可創(chuàng)建一個(gè)包含可能S和L值的大表格。盡管并非所有組合都被視為有效，允許滿足下表中條件的組合均適用；該表在R15中定義如下：<

38.214-Table-1:ValidSandLcombinations

>

<

38.214-Table-1:ValidSandLcombinations

>1.2R16版本分配表在R16中對(duì)起始符號(hào)和長(zhǎng)度進(jìn)行了更改，具體見(jiàn)下表:<38.214V16.4.0-Table-1:ValidSandLcombinations><38.214V16.4.0-Table-1:ValidSandLcombinations>二、RRC消息中的SLIV終端通過(guò)上表得到的PDSCH/PUSCH資源是通過(guò)RRC消息獲悉的，消息內(nèi)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值查詢表

根據(jù)

SLIV公式和TS38.214-Table-1，SLIV值可通過(guò)下表進(jìn)行查詢。在表中可以查到唯一的(S,L)對(duì)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