Download TIA-873.000

X.P0013-000-B v1.0
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ALL-IP CORE NETWORK MULTIMEDIA DOMAIN - OVERVIEW
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CONTENTS
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Introduction .............................................................................................................................................. 1
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Scope ........................................................................................................................................................ 2
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Reference ................................................................................................................................................. 3
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3.1
Normative References ................................................................................................................ 3
3.2
Informative References .............................................................................................................. 3
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Terminology ............................................................................................................................................. 4
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Assumptions ............................................................................................................................................. 5
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Definitions ................................................................................................................................................ 6
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6.1
Quality of Service (QoS) ........................................................................................................... 6
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6.2
Home Subscriber Server (HSS) ................................................................................................. 6
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Abbreviations ........................................................................................................................................... 7
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MMD Core Network Architecture ........................................................................................................... 9
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Network Entities ...................................................................................................................... 13
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8.2
Reference Points ...................................................................................................................... 13
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Documents for the core network packet data subsystem ........................................................................ 14
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Documents for the core network IP Multimedia subsystem ................................................................... 15
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Documents for the core network service capability subsystem .............................................................. 16
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X.P0013-000-B v1.0
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LIST OF FIGURES
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Figure 1
HSS Collective .......................................................................................................................... 6
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Figure 2
MMD Core Network Architecture Model ................................................................................. 9
Figure 3
Packet Data Subsystem Core Network Architecture Model ....................................................10
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Figure 4
IMS Core Network Architecture Model...................................................................................11
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Session Control Reference Model ............................................................................................12
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Figure 6
Multimedia Application Server Control Plane .........................................................................12
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X.P0013-000-B v1.0
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LIST OF TABLES
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Table 1.
Abbreviations .............................................................................................................................8
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X.P0013-000-B v1.0
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FOREWORD
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(This foreword is not part of this document)
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This document was prepared by 3GPP2 TSG-X.
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This document contains major modifications from the previous revision.
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This document is part of the series of documents X.S0013.
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"Shall" and "shall not" identify requirements to be followed strictly to conform to this document and
from which no deviation is permitted. "Should" and "should not" indicate that one of several
possibilities is recommended as particularly suitable, without mentioning or excluding others, that a
certain course of action is preferred but not necessarily required, or that (in the negative form) a certain
possibility or course of action is discouraged but not prohibited. "May" and "need not" indicate a
course of action permissible within the limits of the document. "Can" and "cannot" are used for
statements of possibility and capability, whether material, physical or causal.
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REVISION HISTORY
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Revision
Changes
Date
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0 v1.0
Initial Publication
December 2003
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Version 2
July 2005
A. v1.0
Release A
November 2005
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B. v1.0
Release B
December 2007
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X.P0013-000-B v1.0
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Introduction
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The Multimedia Domain (MMD) is a collection of core network entities providing 3rd generation
capabilities and based on IP protocols, elements and principles. This document provides an
introduction to the core network elements and interfaces that make up a portion of the MMD. This
document also introduces the series of documents that provide the complete specification of the core
network interfaces and protocols that provide this part of the MMD capabilities.
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Scope
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This document contains the introduction of the Stage-1, Stage-2 and Stage-3 recommendations for the
Multimedia Domain. It includes an overview of the system elements and interfaces and lists the series
of documents that provide the complete specifications for the core network portions of the MMD. Not
all MMD entities and interfaces may be covered by this version of this series of specifications. The
specific entities and interfaces covered by a particular version are identified in each of the individual
specifications.
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Reference
3.1
Normative References
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The following standards and documents contain provisions which, through reference in this text,
constitute provisions of this document. At the time of publication, the editions indicated were valid.
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[2]
3GPP2 X.S0011-D v1.0, “cdma2000 Wireless IP Network Standard”
[3]
3GPP2 X.S0013-002-B v1.0, “IP Multimedia Subsystem (IMS); Stage-2”
[4]
3GPP2 X.S0013-003-B v1.0, “IP Multimedia (IM) session handling; IM call model”
[5]
3GPP2 X.S0013-004-B v1.0, “IP Multimedia Call Control Protocol based on SIP and SDP;
Stage-3”
[6]
3GPP2 X.S0013-005-B v1.0, “IP Multimedia (IM) Subsystem Cx Interface; Signaling flows
and message contents”
[7]
3GPP2 X.S0013-006-B v1.0, “Cx Interface based on the Diameter protocol; Protocol details”
[8]
3GPP2 X.S0013-007-A v1.0, “IP Multimedia Subsystem; Charging Architecture”
[9]
3GPP2 X.S0013-008-A v1.0, “IP Multimedia Subsystem; Offline Accounting, Information
Flows and Protocol”
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3GPP2 X.S0013-009-0 v1.0, “MMD Call Flow Examples”
[11]
3GPP2 X.S0013-010-B v1.0, “IP Multimedia Subsystem (IMS) Sh Interface signaling flows
and message contents”
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3GPP2 X.S0013-011-B v1.0, “Sh interface based on the Diameter protocol”
[13]
3GPP2 X.S0013-012-0 v1.0, “Service Based Bearer Control – Stage 2”
[14]
3GPP2 X.S0013-013-0 v1.0, “Service Based Bearer Control – Tx Interface Stage-3”
[15]
3GPP2 X.S0013-014-0 v1.0, “Service Based Bearer Control – Ty Interface Stage 3”
[16]
3GPP2 X.S0013-016-0 v1.0, “Messaging service using the IP Multimedia (IM) Subsystem
(IMS)”
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Informative References
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[1]
3GPP2 S.R0037-0, “IP Network Architecture Model for cdma2000 Spread Spectrum
Systems”, Version 3.0, August, 2003.
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X.P0013-000-B v1.0
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Terminology
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This document uses the following “verbal forms” and “verbal form definitions”:
a.
b.
c.
“shall” and “shall not” identify items of interest that are to be strictly followed and from
which no deviation is recommended,
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“should” and “should not” indicate items of interest that are highly desirable and
particularly suitable, without identifying or excluding other items; or (in the negative
form) indicate items of interest that are not desirable, are not particularly suitable, or are
not recommended but not prohibited, and
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“may” and “may not” indicate items of interest that are optional but permissible within
the limits of this recommendation.
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Assumptions
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a.
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The architecture described in this document assumes the following protocols:
I.
SIP (Session Initiation Protocol),
II.
DIAMETER, and
III.
MOBILE IP.
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b.
The use, support, and interoperation of IPv4 and IPv6 in the All-IP network are currently
assumed in this document.
c.
There are known bearer paths not shown in Figure 2 (e.g., bearer paths between the
Application Servers and the Border Router, the Application Servers and the Media
Resource Function Processor). Some of these interfaces are shown in additional
diagrams in this document, but not numerically labeled, see Section 2.
d.
There are known signaling paths not shown in Figure 2 (e.g., signaling paths between
two Call Session Control Function (CSCF), two AAA, an external SIP entity beyond the
Border Router and the CSCF). Some of these interfaces are shown in additional
diagrams in this document, but not numerically labeled, see Section 2.
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Definitions
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This section provides definitions of some terms used within this document.
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6.1
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Quality of Service (QoS)
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QoS refers to a set of capabilities that a network may provide to a communications session. These
capabilities can be specified so that particular applications (e.g., conversational voice, video, streaming
audio) fulfill human factors or other requirements with respect to fidelity and performance.
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6.2
Home Subscriber Server (HSS)
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For the documents related to the IP Multimedia Subsystem (IMS) elements and the Sh and Cx
interfaces (see “11/Sh” and “16/Cx” in Figures 2, 3, 4 and 6), the term “HSS” is used to represent the
Home AAA entity plus the Databases to which it interfaces. When used to define interfaces, the term
HSS implies interfaces to the AAA component of the collective. The functionalities of the HSS
collective and its interfaces are solely defined by the MMD documents and their normative references.
The use of this term does not imply the support of any additional functionality. Other functionalities
and interfaces supported by the AAA and Databases (e.g., Packet Data Subsystem Authentication,
Authorization, Accounting) defined in other documents are not changed by the use of the HSS term in
the MMD series of documents.
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Figure 1 shows the HSS collective. For the purposes of the IMS elements and interfaces, the AAA plus
the Databases are equivalent to the HSS:
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Databases
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AAA
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Figure 1
HSS Collective
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X.P0013-000-B v1.0
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Abbreviations
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This section provides a definition of the abbreviations used within this recommendation, as:
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AAA
Authentication, Authorization, and Accounting
AGW
Access Gateway
API
Application Programming Interface
AS
Application Server
BR
Border Router
BSC
Base Station Controller
BTS
Base Transceiver System
CSCF
Call Session Control Function
DB
Database
DSI
Dynamic Subscriber Information
EIR
Equipment Identity Register
FA
Foreign Agent
HA
Home Agent
I-CSCF
Interrogating CSCF
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HSS
Home Subscriber Server
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IMS
IP Multimedia Subsystem
IP
Internet Protocol
IPv4
Internet Protocol Version 4
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IPv6
Internet Protocol Version 6
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MGW
Media Gateway
MGCF
Media Gateway Control Function
MM
Mobility Manager
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MRFC
Media Resource Function Controller
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MRFP
Media Resource Function Processor
OSA
Open Service Access
OSF
Operations Systems Function
OSS
Open Support System
PCF
Packet Control Function
P-CSCF
Proxy-CSCF
PDE
Position Determining Entity
PDF
Policy Decision Function
PDS
Packet Data Subsystem
PSTN
Public Switched Telephone Network
QoS
Quality of Service
MMD
Multimedia Domain
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RNC
Radio Network Controller
SCS
Service Capability Server
S-CSCF
Serving CSCF
SIP
Session Initiation Protocol
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Table 1.
Abbreviations
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X.P0013-000-B v1.0
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MMD Core Network Architecture
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Figure 2 presents the core network entities and associated reference points that comprise the MMD
(Multimedia Domain) of the wireless All-IP Network Architecture Model. The network entities are
represented by squares and rectangles; the interfaces between network entities are reference points
identified by numbers. Figure 2 includes several reference points that have dual labels. Either of these
labels may be used in the documents relating to these reference points. Note: in Figure 2 the “MMD
Core Network” is identified by the network elements and reference points highlighted in “blue”.
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...
Databases
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Policy
Rules
Subscription
Profile
DSI
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Application
Server
Network
EIR
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m3
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11/Sh
m4
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OSF Element
Management
Layer
Position
Server
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AAA
16/Cx
12/ISC
Call Session
Control
Function
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Tx
17/Mg
m1
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Breakout
Gateway
Control
Function
OSA Service
Capability
Server
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Sh
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OSFNetwork
Management
Layer / OSS
m2
SIP
Application
Server
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Policy and
Charging
Rules
Function
Ty
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Media
Resource
Function
Controller
Position
Determining
Entity
Managed
Network
Entity
Media
Gateway
Control
Function
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Gateway
32/Mb
cdma2000 Access Network
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36/Mb
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Attendant 41
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Mobile IP
Home
Agent
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Media
Gateway
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Border
Router
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hh
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Media
Resource
Function
Processor
Mobile
Station
PSTN
IP
Network
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Figure 2
MMD Core Network Architecture Model
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The MMD of the All-IP Network offers both general packet data support and multi-media session
capabilities. The multi-media session capabilities are built on top of the general packet data support
capabilities. The general packet data capabilities may be deployed without the multi-media session
capabilities. Some network entities are common to providing both capabilities.
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Figure 3 shows the entities that comprise the general packet data support portion of the MMD core
network. These are known collectively as the Packet Data Subsystem (PDS). Figure 3 includes
several reference points that have dual labels. Either of these labels may be used in the documents
relating to these reference points. Note: in Figure 3 the “Packet Data Subsystem” is identified by the
network elements and reference points highlighted in “blue”.
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OSA
Application
Server
Network
EIR
Policy
Rules
Subscription
Profile
DSI
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Databases
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OSF Element
Management
Layer
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OSA Service
Capability
Server
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Position
Server
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AAA
16/Cx
12/ISC
Call Session
Control
Function
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Breakout
Gateway
Control
Function
9/Mi
Tx
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m1
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OSFNetwork
Management
Layer / OSS
m2
SIP
Application
Server
24/Mr
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49/Mj
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Policy and
Charging
Rules
Function
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Ty
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Managed
Network
Entity
Media
Resource
Function
Controller
Position
Determining
Entity
Media
Gateway
Control
Function
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30/Mn
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Gateway
32/Mb
cdma2000 Access Network
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Resource
Function
Processor
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36/Mb
FA /
Attendant 41
Other Access Networks
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Gateway
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40/Mb
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Mobile IP
Home
Agent
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Router
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45/Mb
47/Um
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34/Mb
Mobile
Station
PSTN
IP
Network
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Figure 3
Packet Data Subsystem Core Network Architecture Model
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Figure 4 shows the entities that comprise the multimedia session capabilities of an All-IP network.
These entities are known collectively as the IP Multimedia Subsystem (IMS). Figure 4 includes
several reference points that have dual labels. Either of these labels may be used in the documents
relating to these reference points. Note: in Figure 4 the “IP Multimedia Subsystem” is identified by the
network elements and reference points highlighted in “blue”.
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X.P0013-000-B v1.0
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OSA
Application
Server
Network
EIR
Policy
Rules
Subscription
Profile
DSI
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...
Databases
SIP
Application
Server
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11
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m3
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3
OSFNetwork
Management
Layer / OSS
m2
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11/Sh
m4
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OSF Element
Management
Layer
Position
Server
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AAA
16/Cx
12/ISC
Call Session
Control
Function
9/Mi
Tx
17/Mg
m1
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5/Mk
Breakout
Gateway
Control
Function
OSA Service
Capability
Server
11/
Sh
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12/ISC
8/OSA-API
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24/Mr
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Policy and
Charging
Rules
Function
Ty
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Managed
Network
Entity
Media
Resource
Function
Controller
Position
Determining
Entity
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Media
Gateway
Control
Function
25/Mp
26/PSTN
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30/Mn
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25
Access
Gateway
32/Mb
cdma2000 Access Network
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37/Mb
36/Mb
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FA /
Attendant 41
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Other Access Networks
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43/Mb
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Mobile IP
Home
Agent
33/Mb
Media
Gateway
38/Mb
40/Mb
42/Mb
Border
Router
44/Mb
45/Mb
hh
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33
Media
Resource
Function
Processor
47/Um
46/Mb
34/Mb
Mobile
Station
PSTN
IP
Network
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Figure 4
IMS Core Network Architecture Model
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The session control functions within the IMS are logically interconnected in various ways in the
session scenarios. Figure 5 identifies the reference points within the IMS between these session
control entities. In many cases there are dual labels for these reference points either of which may be
used in the applicable documents. The Breakout Gateway Control Function (BGCF) and the Media
Gateway Control Function (MGCF) may be in any network (i.e., home, visited, 3rd party).
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Home or Visited Network
2
Home Network Only
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IP
Multimedia
Client
(Proxy)
Session
Control
Manager
hh/Gm
(Interrogating)
Session
ff/
Control
Mw
Manager
dd/Mw
(Serving)
Session
Control
Manager
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10
17/Mg
9/Mi
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Media
Gateway
Control
Function
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Breakout
Gateway
Control
Function
5/Mk
Breakout
Gateway
Control
Function
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Figure 5
Session Control Reference Model
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In addition to the PDS and IMS there is also a collection of entities that provide specific service
capabilities for the MMD (e.g., geo-location capabilities, presence capabilities). These entities
comprise the service capability. Figure 6 shows the entities that comprise the service capability
subsystem portion of the MMD. Figure 6 identifies the reference points within the MMD service
capability subsystem between these session control entities. In many cases there are dual labels for
these reference points either of which may be used in the applicable documents.
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SIP Application Server
Application Server
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[Control and Content]
[Content only]
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Type A
Type B
Type C
Service
Application
Service
Application
Service
Application
OSA Application Server
[Control and Content]
8/OSA-API
11/Sh
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12/ISC
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OSA Service
Capability
Server
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Databases
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12/ISC
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11/Sh
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Position
Server
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AAA
16/Cx
Call Session
Control
Function
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Figure 6
Multimedia Application Server Control Plane
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The Application Server (AS) interfaces offer applications access to a range of network capabilities and
information in two categories, Open Service Access (OSA) based AS and SIP based Application
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X.P0013-000-B v1.0
Servers. The Application Programming Interface (API) to be used on Reference Point 8 is a standard
interface between the Application Server and the OSA Service Capability Server (OSA SCS).
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2
3
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8.1
6
Each network entity may be a physical device, it may form part of a physical device, or it may be
distributed over a number of physical devices. The Network Entities are identified in [1] and detailed
description of the functions and procedures provided by these Network Entities is provided in the
documents listed in Section 3.
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Network Entities
8.2
Reference Points
An interface exists when two Network Entities are interconnected through exactly one signaling or
bearer stream Reference Point. Reference Points identify that a logical relationship exists between two
Network Entities. An interface is defined across a specific Reference Point by defining the protocol
and data exchanged between the entities. Zero, one or more interfaces may be defined for each
reference point in the MMD. The Reference Points are identified in [1].
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9
Documents for the core network packet data
subsystem
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2
3
4
5
The MMD is specified by a series of documents of which this document provides an overview. The
Packet Data Subsystem is specified in [2].
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X.P0013-000-B v1.0
1
2
3
4
10
Documents for the core network IP
Multimedia subsystem
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6
7
8
9
The MMD is specified by a series of documents of which this document, Part 0, provides an overview.
The following documents comprise the Core Network IP Multimedia Subsystem (IMS) and, in this
release, address reference point’s 5/Mk, 9/Mi, 11/Sh, 12/ISC, 16/Cx, 17/Mg, 24/Mr, 49/Mj, dd/Mw,
ff/Mw, hh/Gm, Mb, ii, Tx and Ty, which are shown in the reference model.
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a.
IP Multimedia Subsystem (IMS); Stage-2 [3]:
This document includes functional entity actions and information flows for the entities
and interfaces that comprise the IMS.
b.
IP Multimedia (IM) session handling; IM call model [4]:
This document covers the call model to be supported by SIP session control functional
entities,
c.
IP Multimedia Call Control Protocol based on SIP and SDP; Stage-3 [5]:
This document specifies the Stage-3 for the SIP based interfaces of IMS.
d.
IP Multimedia (IM) Subsystem Cx Interface; Signaling flows and message contents [6]:
This document specifies detailed Stage-2 for interface 16/Cx,
e.
Cx Interface based on the Diameter protocol; Protocol details [7]:
This document specifies Stage-3 for interface 16/Cx,
f.
IP Multimedia Subsystem; Charging Architecture [8]:
This document specifies the architecture for off-line and on-line accounting functions,
and
g.
IP Multimedia Subsystem: Offline Accounting, Information Flows and Protocol [9]:
This document specifies detailed Stage-2 and Stage-3 for the IMS Accounting interfaces.
h.
MMD Call Flow Examples [10]:
This document specifies detailed Stage-2 and Stage-3 for the IMS Accounting interfaces.
i.
Service Based Bearer Control – Stage 2 [13]:
This document specifies Stage-2 for interfaces Tx and Ty.
j.
Service Based Bearer Control – Tx Interface Stage-3 [14]:
This document specifies Stage-3 for interface Tx.
k.
Service Based Bearer Control – Ty Interface Stage-3 [15]:
This document specifies Stage-3 for interface Ty.
l.
Messaging service using the IP Multimedia (IM) Subsystem (IMS) [16]:
This document provides the protocol details for the messaging service within the IP
Multimedia Subsystem (IMS) based on the Session Initiation Protocol (SIP), the Session
Description Protocol (SDP) and, the Message Session Relay Protocol (MSRP).
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11
Documents for the core network service
capability subsystem
1
2
3
4
5
The MMD is specified by a series of documents of which this document provides an overview. The
following documents comprise the Core Network Service Capabilities Subsystem (SCS) and, in this
release, address reference point 11/Sh.
a.
IP Multimedia Subsystem (IMS) Sh Interface signaling flows and message contents
[11]:
This document specifies detailed Stage-2 for interface 11/Sh.
b.
Sh interface based on the Diameter protocol [12]:
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This document specifies Stage-3 for interface 11/Sh.
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