5G(NR)網(wǎng)絡(luò)中的系統(tǒng)信息可分為MSI（Minimum System Information）和OSI（Other System Information）兩大類，其中：
1.OSI消息定義
OSI（Other System Information）是指除SIB1外的其他系統(tǒng)消息；也就是SIB2~SIBn；
2.OSI消息廣播方式
OSI消息的發(fā)送方式為如下兩類：
3.OSI消息廣播信道
OSI消息通過(guò)DL_SCH進(jìn)行廣播；消息周期性廣播占用的時(shí)域窗，稱為系統(tǒng)消息窗；
4. OSI消息調(diào)度
OSI消息搜索空間一般配置在PDCCH/DCI 1_0上；若該單元未配置，其將與CORESET (i.e, CORESET0)在PDCCH/DCI 1_0搜索空間中伴隨SIB1發(fā)送；
高層調(diào)度（按照SIB1中的配置進(jìn)行周期性發(fā)送）
5.OSI消息內(nèi)容
根據(jù)36.331-f30 OSI消息的調(diào)度有以下內(nèi)容：
SIB1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin Q-RxLevMin,
q-RxLevMinOffset INTEGER (1..8) OPTIONAL, -- Need R
q-RxLevMinSUL Q-RxLevMin OPTIONAL, -- Need R
q-QualMin Q-QualMin OPTIONAL, -- Need R
q-QualMinOffset INTEGER (1..8) OPTIONAL -- Need R
} OPTIONAL, -- Need S
cellAccessRelatedInfo CellAccessRelatedInfo,
connEstFailureControl ConnEstFailureControl OPTIONAL, -- Need R
si-SchedulingInfo SI-SchedulingInfo OPTIONAL, -- Need R
servingCellConfigCommon ServingCellConfigCommonSIB OPTIONAL, -- Need R
ims-EmergencySupport ENUMERATED {true} OPTIONAL, -- Need R
eCallOverIMS-Support ENUMERATED {true} OPTIONAL, -- Cond Absent
ue-TimersAndConstants UE-TimersAndConstants OPTIONAL, -- Need R
uac-BarringInfo SEQUENCE {
uac-BarringForCommon UAC-BarringPerCatList OPTIONAL, -- Need S
uac-BarringPerPLMN-List UAC-BarringPerPLMN-List OPTIONAL, -- Need S
uac-BarringInfoSetList UAC-BarringInfoSetList,
uac-AccessCategory1-SelectionAssistanceInfo CHOICE {
plmnCommon UAC-AccessCategory1-SelectionAssistanceInfo,
individualPLMNList SEQUENCE (SIZE (2..maxPLMN))
OF UAC-AccessCategory1-SelectionAssistanceInfo
} OPTIONAL
} OPTIONAL, -- Need R
useFullResumeID ENUMERATED {true} OPTIONAL, -- Need N
lateNonCriticalExtension OCTET STRING OPTIONAL,
nonCriticalExtension SEQUENCE{} OPTIONAL}
SI-SchedulingInfo ::= SEQUENCE {
schedulingInfoList SEQUENCE (SIZE (1..maxSI-Message)) OF SchedulingInfo,
si-WindowLength ENUMERATED {s5, s10, s20, s40, s80, s160, s320,
s640, s1280},
si-RequestConfig SI-RequestConfig OPTIONAL, -- Cond MSG-1
si-RequestConfigSUL SI-RequestConfig OPTIONAL, -- Cond SUL-MSG-1
systemInformationAreaID BIT STRING (SIZE (24)) OPTIONAL, -- Need R ...}
SchedulingInfo ::= SEQUENCE {
si-BroadcastStatus ENUMERATED {broadcasting, notBroadcasting},
si-Periodicity ENUMERATED {rf8, rf16, rf32, rf64, rf128, rf256, rf512},
sib-MappingInfo SIB-Mapping}
SIB-Mapping ::= SEQUENCE (SIZE (1..maxSIB)) OF SIB-TypeInfo
SIB-TypeInfo ::= SEQUENCE {
type ENUMERATED {sibType2, sibType3, sibType4, sibType5,
sibType6, sibType7, sibType8, sibType9,
spare8, spare7, spare6, spare5, spare4,
spare3, spare2, spare1,... },
valueTag INTEGER (0..31) OPTIONAL, -- Cond SIB-TYPE
areaScope ENUMERATED {true} OPTIONAL -- Need S}
SI-RequestConfig::= SEQUENCE {
rach-OccasionsSI SEQUENCE {
rach-ConfigSI RACH-ConfigGeneric,
ssb-perRACH-Occasion ENUMERATED {oneEighth, oneFourth, oneHalf, one, two,
four, eight, sixteen} } OPTIONAL, -- Need R
si-RequestPeriod ENUMERATED {one, two, four, six, eight, ten, twelve,
sixteen} OPTIONAL,
si-RequestResources SEQUENCE(SIZE (1..maxSI-Message)) OF SI-RequestResources}
SI-RequestResources ::= SEQUENCE {
ra-PreambleStartIndex INTEGER (0..63),
ra-AssociationPeriodIndex INTEGER (0..15) OPTIONAL, -- Need R
ra-ssb-OccasionMaskIndex INTEGER (0..15) OPTIONAL -- Need R}
ServingCellConfigCommonSIB ::= SEQUENCE {
downlinkConfigCommon DownlinkConfigCommonSIB,
uplinkConfigCommon UplinkConfigCommonSIB OPTIONAL, -- Need R
supplementaryUplink UplinkConfigCommonSIB OPTIONAL, -- Need R
n-TimingAdvanceOffset ENUMERATED { n0, n25560, n39936 } OPTIONAL, -- Need S
ssb-PositionsInBurst SEQUENCE {
inOneGroup BIT STRING (SIZE (8)),
groupPresence BIT STRING (SIZE (8)) OPTIONAL -- Cond Above6GHzOnly },
ssb-PeriodicityServingCell ENUMERATED {ms5, ms10, ms20, ms40, ms80, ms160},
tdd-UL-DL-ConfigurationCommon TDD-UL-DL-ConfigCommon OPTIONAL, -- Cond TDD
ss-PBCH-BlockPower INTEGER (-60..50), ...}
DownlinkConfigCommonSIB ::= SEQUENCE {
frequencyInfoDL FrequencyInfoDL-SIB,
initialDownlinkBWP BWP-DownlinkCommon,
bcch-Config BCCH-Config,
pcch-Config PCCH-Config, ...}
BWP-DownlinkCommon ::= SEQUENCE {
genericParameters BWP,
pdcch-ConfigCommon SetupRelease { PDCCH-ConfigCommon }
pdsch-ConfigCommon SetupRelease { PDSCH-ConfigCommon }
...}
PDCCH-ConfigCommon ::= SEQUENCE {
commonControlResourcesSets SEQUENCE (SIZE(1..2)) OF ControlResourceSet OPTIONAL,
commonSearchSpaces SEQUENCE (SIZE(1..4)) OF SearchSpace OPTIONAL,
searchSpaceSIB1 SearchSpaceId OPTIONAL,
searchSpaceOtherSystemInformation SearchSpaceId OPTIONAL,
pagingSearchSpace SearchSpaceId OPTIONAL,
ra-ControlResourceSet ControlResourceSetId OPTIONAL,
ra-SearchSpace SearchSpaceId OPTIONAL, ...}
整理：kangguoying20201106
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