© 2011 Award Solutions, Inc.

LTE-EPC AND IMS REFERENCE

LTE_902 LTE-EPC and IMS Reference v1.6

CPE

I-CSCFPCRF

S-GW

P-CSCFP-GW/PCEF

MME

GTPv2-CUDPGTP-U

Payload

UDP

S5

GTP

v2-C

UDP

S11 Not

Spe

cifie

d

BICC (SS7) Bearer Independent Call Control, ITU-T Q.1901Diameter RFC 3588, RFC 3589, RFC 4006, RFC 4740DNS Domain Name System, RFC 1035GTPv2-C GPRS Tunneling Protocol ver.2 Control Plane, 29.274GTPv1-U GPRS Tunneling Protocol User Plane, 29.281HTTP Hypertext Transfer Protocol, RFC 2616IP Internet Protocol, RFC 791ISUP (SS7) ISDN User Part, ITU-T Q.763L1 (SS7) Layer 1 (unspecified)M3UA MTP3 User Adaptation Layer, RFC 4666MEGACO Media Gateway Control Protocol, ITU-T H.248MTP2 (SS7) Message Transfer Part 2, ITU-T Q.703 MTP3 (SS7) Message Transfer Part 3, ITU-T Q.703RTP Real-Time Transport Protocol, RFC 3550S1AP S1 Application Protocol, 36.413SCTP Stream Control Transmission Protocol, RFC 4960SIP Session Initiation Protocol, RFC 3261TCP Transmission Control Protocol, RFC 793TDM (PSTN) Time Division MultiplexingUDP User Datagram Protocol, RFC 768Not Specified (proprietary)

Protocols

Interface Nodes Technical SpecificationsCx CSCF HSS 29.228. 29.229Gm UE P-CSCF 23.002, RFC 3261Gx PCEF PCRF 29.212Gy PCEF OCS 32.299Gz PCEF OFCS 32.299ISC S-CSCF AS 23.228Mb RTP-based Bearer 29.162, RFC 4867Mg MGCF CSCF 23.002, RFC 3261Mi CSCF BGCF 23.002, RFC 3261Mj BGCF MGCF 23.002, RFC 3261Mk BGCF BGCF 23.002, RFC 3261Mn MGCF MGW 29.332, ITU-T H.248Mp MRFC MRFP 29.333, ITU-T H.248Mr S-CSCF MRFC 23.002, RFC 3261Mw I-CSCF, P-CSCF, S-CSCF 23.002, RFC 3261Rx AF PCRF 29.214S1-MME E-UTRAN (eNB) MME 36.412, 36.413S1-U E-UTRAN (eNB) S-GW 36.414, 29.281S5 S-GW P-GW 29.274 (control plane)

29.281 (user plane)S6a MME HSS 29.272S11 MME S-GW 29.274SGi P-GW PDN 29.061Sh HSS AS 29.328, 29.329Sp SPR PCRF 23.203Ut UE AS RFC 2616

3GPP Interfaces and Technical Specifications

AS

MRFC

MRFP

MGW

SGWInterfaces LEGEND

LTE Traffic and SignalingUser Traffic (indeterminate)LTE SignalingIMS Media PlaneIMS Session Control PlaneIMS Media ControlService ControlIMS Application Plane PSTN SignalingCharging Control Virtual Interfaces (different colors)

MGCF

S-CSCF

UE

PSTN

PayloadRTPUDP

IPTCP UDP

Payload

Gx

Sp

Diameter

GTPv2-C

UDPTDM

MTP3MTP2

L1ISUP

M3UA

SCTP

IP

TCPSIP

RTP

MEGACO

HTTPGTP-U

S1AP

Mb

Mb

Not Specified

SPR

HSS

HSS

Subscriber’s service

management

Subscriber’s IMS-based

media stream

Subscriber’s SIP-based registrations and session control

BICC

Payl

oad

RTP

UDP

23.002; 23.401; 23.402/23.203

23.203

23.002

23.002

23.002

23.228

23.228

23.228

23.228

23.228

23.228

23.228

23.228

23.228

23.002

PLMN

BGCF

Mj

BGCF (another network)

23.228

UDP TCPSIP

SCTP

AF

Subscriber’s IP Network Access IP

Network

ENUMDNS

RFC 6116;RFC 6117

23.228

AF Application FunctionAS Application ServerBGCF Breakout Gateway Control FunctionCPE Customer Premise EquipmentDNS Domain Name SystemENUM E.164 Number MappingE-UTRAN Evolved UTRANHSS Home Subscriber ServerI-CSCF Interrogating Call Session Control FunctionIMS IP Multimedia SubsystemISC IMS Service ControlMGCF Media Gateway Control FunctionMGW Media GatewayMME Mobility Management EntityMRFC Media Resource Function ControllerMRFP Media Resource Function ProcessorOCS Online Charging SystemOFCS Offline Charging SystemPCEF Policy and Charging Enforcement FunctionPCRF Policy and Charging Rules FunctionP-CSCF Proxy Call Session Control Function PDN Packet Data NetworkP-GW PDN GatewayPLMN Public Land Mobile NetworkPSTN Public Switched Telephone Network S-CSCF Serving Call Session Control FunctionSGW Signaling GatewayS-GW Serving GatewaySPR Subscription Profile Repository

Acronyms and Nodes

S5

S5

OCSOFCS

TCP

Dia

met

erSC

TP

DNS

23.203; 32.25123.203; 32.251; 32.296

E-UTRAN