服务请求流程

服务请求流程服务请求概述服务请求流程的目的在于将EMM模式从ECM-IDLE变为ECM-CONNECTED，并且当发送用户上行数据或者信令时建立无线和S1承载。另外，该流程触发CS的MO/MT回落或者1xCS回落流程。服务请求流程可以由以下网元发起：UE-initiatedNetwork-initiatedPage108UE发起服务请求流程S-GWMMEeNodeB1.

NAS:

Service

RequestP-GWNAS:

Service

RequestS1-AP:

Initial

Context

Setup

RequestRadio

Bearer

EstablishmentUplink

dataS1-AP:

Initial

Context

SetupResponseModify

bearer

requestModify

bearer

requestModify

bearer

responseModify

bearer

responsePage109服务请求流程跟踪消息S1-MME

接口跟踪S11

接口跟踪Page110消息1&2:Service

Requests1-AP关键参数:service

request

messageTAICGIRRC

establishment

causeS-TMSIUE:RRC

MessageNAS：Service

RequestenodeB:NAS

消息封装在S1-APInitial

UE

Message里面S-GWMMEP-GW1.

NAS:

eNodeBServiceRequest2.

NAS:ServiceRequestPage111消息1&2:Service

RequestS1-AP关键参数:S1ap-MsgvalueinitialUEMessageprotocolIEsSEQUENCEvalueeNB-UE-S1AP-ID:0x76SEQUENCEvaluenAS-PDUmsg-choiceservice-request-messagekSI-and-sequence-numberksi:0x1sequence-number:0x3message-authentication-codeshort-MAC-value:0x75b0S-GWMMEP-GW1.

NAS:

eNodeBServiceRequest2.

NAS:ServiceRequestPage112消息1&2:Service

RequestS1-AP关键参数:TAItAIpLMNidentity:64

F0

01tAC:0F

A9SEQUENCEvalueSEQUENCEvalueeUTRAN-CGIpLMNidentity:64

F0

01cell-ID:00

00

90

00S1-AP关键参数:CGISEQUENCEvaluetAIpLMNidentity:64

F0

01tAC:0F

A9SEQUENCEvalueeUTRAN-CGIpLMNidentity:64

F0

01cell-ID:00

00

90

00S-GWMMEP-GW1.

NAS:

eNodeBServiceRequest2.

NAS:ServiceRequestPage113消息1&2:Service

RequestrRC-Establishment-Cause:mo-DataSEQUENCEvalueSEQUENCEvalues-TMSImMEC:92m-TMSI:C0

26

00

2FS1-AP关键参数:

RRCestablishment

S1-AP关键参数:

S-TMSIcauseSEQUENCEvaluerRC-Establishment-Cause:mo-DataSEQUENCEvalues-TMSImMEC:92m-TMSI:C0

26

00

2FS-GWMMEP-GW1.

NAS:

eNodeBServiceRequest2.

NAS:ServiceRequestPage114消息1&2:Service

Request-CP方案S1-AP关键参数:nAS-key-set-identifier；data-service-typeS-GWMMEP-GW1.

NAS:

eNodeBServiceRequest2.

NAS:ServiceRequestPage115消息3:Initial

Context

Setup

RequestInitial

context

setuprequestMME

UE

S1AP

IDeNB

UE

S1AP

IDUE-AMBRBearer

informationTransport

layer

address

andGTP-TEID功能:

S1-AP关键参数:激活所有EPS承载的无线和S1承载S-GWeNodeBMMEP-GW3.

S1-AP:

Initial

Context

Setup

RequestPage116消息3:Initial

Context

Setup

RequestS-GWeNodeBMMEP-GW3.

S1-AP:

Initial

Context

Setup

Request关键参数:Initial

context

setup

requestinitialContextSetupRequestmME-UE-S1AP-ID:0x1c006caS1ap-MsginitiatingMessagevalueprotocolIEsSEQUENCEvalueSEQUENCEvalueeNB-UE-S1AP-ID:0x76Page117消息3:Initial

Context

Setup

RequestS-GWeNodeBMMEP-GW3.

S1-AP:

Initial

Context

Setup

Request关键参数:UE-AMBRvalueuEAggregateMaximumBitrateuEaggregateMaximumBitRateDL:

0x1ba8140(29000000)uEaggregateMaximumBitRateUL:

0x83d600(8640000)..SEQUENCE..Page118消息3:Initial

Context

Setup

RequestS-GWeNodeBMMEP-GW3.

S1-AP:

Initial

Context

Setup

Request关键参数:Bearer

informationSEQUENCEvaluee-RABToBeSetupListCtxtSUReqSEQUENCEvaluee-RABToBeSetupItemCtxtSUReqe-RAB-ID:0x5e-RABlevelQoSParametersqCI:0x9allocationRetentionPrioritypriorityLevel:0x1pre-emptionCapability:0pre-emptionVulnerability:1transportLayerAddress:

93

14

5C

28gTP-TEID:90

08

00

21Page119消息4&54.无线接口流程S-GWeNodeBMMEP-GW4.

Radio

Bearer

EstablishmentS-GWeNodeBMMEP-GW5.

Uplink

data5.Uplink

data:Page120消息6:Initial

Context

SetupResponseInitial

context

setupresponseMME

UE

S1AP

IDeNB

UE

S1AP

IDeRAB

information功能:

S1-AP关键参数:S1-AP

消息:Initial

ContextSetup

CompleteS-GWeNodeBMMEP-GW6.

S1-AP:

Initial

Context

SetupResponsePage121消息6:Initial

Context

SetupResponseS-GWeNodeBMMEP-GW关键参数:Initial

context

setup

responseinitialContextSetupResponsemME-UE-S1AP-ID:0x1c006caS1ap-MsgsuccessfulOutcomeprocedureCode:0x9

(9)valueprotocolIEsSEQUENCEvalueSEQUENCEvalueeNB-UE-S1AP-ID:0x766.

S1-AP:

Initial

Context

SetupResponsePage122消息6:Initial

Context

Setup

ResponseS-GWeNodeBMMEP-GW关键参数:eRAB

informatione-RABSetupItemCtxtSURese-RAB-ID:0x5transportLayerAddress:84

15

09

01gTP-TEID:00

00

04

3F..SEQUENCEvaluee-RABSetupListCtxtSUResSEQUENCEvalue..6.

S1-AP:

Initial

Context

SetupResponsePage123消息7:Modify

bearer

requestMME

GTP

address

and

S-GWGTP

addressTAI

and

ECGIRAT

typeDelay

Downlink

PacketNotification

RequestEPS-bearer-id

and

F-TEID功能:

关键参数:每个PDN连接发送一个ModifyBearer

Request消息eNodeBP-GWMME

S-GW7.

Modify

bearer

requestPage124消息7:Modify

bearer

requesteNodeBP-GW关键参数:MME

GTP

address

and

S-GW

GTP

addresslocalIPAddripValue:93

02

5C

01gsnIPAddr

ipValue:93

14

5C

01localPort:2123peerPort:2123GTPCTraceMsggtp..MME

S-GW7.

Modify

bearer

requestPage125消息7:Modify

bearer

requesteNodeBP-GW关键参数:TAI

and

ECGIMME

S-GW7.

Modify

bearer

requestmsg-type:modify-bearer-requestgtpV2teid-flag:teid-flag

1msg-bodytunnel-endpoint-identifier:

0x90080021sequence-number:0x1008bmsg-datauser-location-infotaiMCCMNC:46010tac:0xfa9ecgiMCCMNC:46010eci:0x900Page126消息7:Modify

bearer

requesteNodeBP-GW关键参数:RAT

type；Delay

Downlink

PacketNotification

RequestMME

S-GW7.

Modify

bearer

request..rat-typerAT-Type:NB-IoTdelay-Downlink-packet-notification-requestdelay-value:0x0bearer-contextspare:0x0

(0)valuebearer-contexts-to-be-modified..Page127消息7:Modify

bearer

requesteNodeBP-GW关键参数:EPS-bearer-id

and

F-TEIDMME

S-GW7.

Modify

bearer

requesteps-bearer-ideps-bearer-id:0x5valuebearer-contexts-to-be-modifiedCHOICECHOICEf-teidvalues1-enodeb-f-teidinterface-type:s1u-eNodeB-GTPU-interfaceteid-or-gre-key:0x43fip-addressipv4-address:84

15

09

01Page128消息7:Modify

bearer

request-CP方案eNodeBP-GW关键参数:EPS-bearer-id

and

F-TEIDMME

S-GW7.

Modify

bearer

requesteps-bearer-ideps-bearer-id:0x5valuebearer-contexts-to-be-modifiedCHOICECHOICEf-teidvalues11-u-MME-f-teidInterface-type

---

s11u-MME-GTPU-INTERFACE(38)teid-or-gre-key

---

0x5400c03c(1409335356)ip-addressipv4-address:84

15

09

01Page129消息8&9Modify

Bearer

Request

/

ResponseModify

bearer

requestS-GWeNodeBMMEP-GW8.

Modify

bearer

requestS-GWeNodeBMMEP-GWModify

bearer

response9.

Modify

bearer

responsePage130消息10:Modify

bearer

responseMessage

typeCause

valueModify

Bearer

Response

消息

关键参数:eNodeBP-GWMME

S-GW10.

Modify

bearer

responsemsg-type:modify-bearer-responsecause-value:request-acceptedGTPCTraceMsg...gtpgtpV2msg-bodytunnel-endpoint-identifier:0x80106e02sequence-number:0x1008bmsg-datamodify-bearer-responsecause...Page131网络侧发起的服务请求流程S-GWeNodeBMMEP-GW1.

Downlink

Data3.

Paging4.

Paging5.

Service

Request

ProcedureDownlink

Data

EUTRAN2a.

Downlink

Data

Notification2b.

Downlink

Data

NotificationAckPage132Service

Request

流程跟踪消息S1-MME

接口跟踪S1接口跟踪Page133消息2a:Downlink

Data

Notification关键参数:Message

typeTEIDsequence

numberCause

valueDownlink

data

NotificationeNodeBS-GWMME

S-GW2a.

Downlink

data

Notificationteid-flag:teid-flag1

(1)msg-bodysequence-number:0x100400

(1049600)GTPCTraceMsg...gtpgtpV2msg-type:downlink-data-notificationtunnel-endpoint-identifier:0x80109602

(2148570626)msg-datadownlink-data-notificationPage134消息2b:Downlink

DataNotification

Ack关键参数:Message

typ