框图

LTE协议基础知识汇总
LTE协议基础知识汇总
LTE协议基础知识汇总

IRAT交互

LTE协议基础知识汇总
LTE协议基础知识汇总

LTE实体

Entity Name Description
AAA Authentication, Authorization and Accounting server
AF Application Function
CBC Cell Broadcast Center
eAN/ePCF Evolved AN/Packet Control Function
EIR Equipment Identity Register
eNB eNodeB
ePDG Evolved/Enhanced Packet Data Gateway
GGSN Gateway GPRS Support Node
HSGW HRPD Serving Gateway
HSS Home Subscriber Server
MME Mobility Management Entity
MSC Mobile Switching Center
OCS Online Charging System
PDN Packet Data Network
PCRF Policy and Charging Rules Function
P-GW Packet Data Network (PDN) Gateway
SGSN Serving GPRS Support Node
S-GW Serving Gateway
UE User Equipment
VLR Visitor Location Register

LTE协议

Name 3GPP / ITU Standard Interfaces Description
Diameter RFC 3588, 29.272,29.273, 29.212, 29.214,29.215, 32.299 S6a, S6d, S13, S13,’ SWa/d/m/x, STa, S6b,H2, Pi, Gx, Gxa, Gxc, Gy Rx, S9 Authentication, Authorization and Accounting Protocol
GTPv1 29.281 S1-U, X2-U, S4-U, S5/8-U, S12-U GPRS Tunneling Protocol User Plane Protocol
GTPv2 29.274 S3-C, S4-C, S5/8-C, S10, S11 GPRS Tunneling Protocol for ControlPlane
MIPv4 29.279 S2a-C Mobile IPv4 Protocol
NAS 24.301 LTE-Uu, S1-MME Non-Access-Stratum Protocol
PDCP 36.323 LTE-Uu Packet Data Convergence Protocol
PMIPv6 29.275 S2a-C, S2b-C, S5/8-C Proxy Mobile IPv6 Protocol
RLC 36.322 LTE-Uu Radio Link Control Protocol
RRC 36.331 LTE-Uu, S1, X2, S3 Radio Resource Control Protocol
S1AP 36.413 S1-C E-UTRAN S1 Application Protocol (S1AP)
SCTP RFC 2960 S1-MME, X2, SBc,Diameter-basedinterfaces Stream Control Transport Protocol
X2AP 36.423 X2-C E-UTRAN X2 Application Protocol

LTE接口

Interface Description
Cx CSCF HSS
Gxa/S7 PCRF P-GW
Gxc PCRF S-GW
Gy P-GW OCS
LTE-Uu UE eNB
Rx+ PCRF AF
SBc MME CBC
SGi P-GW PDN
SGs MME VLR
S1-MME eNB MME
S1-U eNB S-GW
S2a P-GW HSGW [trusted non-3GPP IP access]
S2b P-GW ePDG
S2c P-GW UE [untrusted non-3GPP and/or 3GPP access]
S3 SGSN MME
S4 SGSN S-GW
S5 S-GW P-GW
S6a MME HSS
S7/Gxa P-GW PCRF
S8 Visited S-GW Home P-GW
S9 Visited PCRF Home PCRF
S10 MME MME
S11 MME S-GW
S13 MME EIR
S13’ SGSN EIR
S101 MME eAN/PCF
S102 MME MSC [1xRTT ]
S103 S-GW HSGW
Sv MME MSC [ WCDMA]
SWa AAA Proxy untrusted non-3GPP access
SWd AAA Server AAA Proxy
SWm ePDG AAA Proxy
SWx HSS AAA
X2 eNB eNB

IMS实体

Entity Name Description
BGCF Breakout Gateway Control Function
HSS Home Subscriber Service
I-CSCF Interrogating Call Session Control Function
IM-MGW IP Multimedia Media Gateway
MGCF Media Gateway Control Function
MRF Media Resource Function
P-CSCF Proxy Call Session Control Function
S-CSCF Serving Call Session Control Function

IMS接口

Interface Description
Cx I-CSCF, S-CSCF HSS
ISC S-CSCF AS
Ma I-CSCF AS
Mg MGCF I-CSCF
Mi S-CSCF BGCF
Mj BGCF MGCF
Mn MGCF IM-MGW
Mr S-CSCF MRFC
Mw P-CSCF I-CSCF S-CSCF
Rf/Ro CSCF BGCF MRFC MGCF AS
Sh AS HSS

典型的LTE信令过程

插入UML图

UEeNodeBNew MMEOld MME/SGSNHSSEIRSGWPGWPCRFAttach ProcedureAttach RequestAttach RequestIdentication RequestIdentication ResponseIdentity RequestIdentity Responsekc, Rand, ResAuthentication/Security RequestAuthentication/Security ResponseIdentity RequestIdentity ResponseME Identity CheckCiphered Options RequestCiphered Options ResponseUpdate Location RequestCancel LocationCancel Location AckUpdate Location AckCreate Session RequestCreate Session RequestPCEF Initiate IP-CAN Session TerminationCreate Session ResponseFirst Downlink DataCreate Session ResponseInitial Context Setup Req./Attach AcceptRRC Connection ReconfigRRC Connection Reconfig. CompleteInitial Context Setup Resp.Direct TransferAttach CompleteDedicated BearerActivationProcedureIP-CAN Session ModificationCreate Bearer RequestCreate Bearer RequestBearer Setup Req. Session Management Req.RRC Connection ReconfigRRC Connection Reconfig. CompleteBearer Setup ResponseDirect TransferSession Management ResponseCreate Bearer ResponseCreate Bearer ResponseIP-CAN Session ModificationUEeNodeBNew MMEOld MME/SGSNHSSEIRSGWPGWPCRF

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