3GPP2 All-IP Wireless Network
ITU-T SSG Seminar on IMT-2000
September 2001
Rio de Janeiro, Brazil
Clif Barber - Tantivy Communications
Secretary, 3GPP2 TSG-S
© 2001 3GPP2
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Outline
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Quick 3GPP2 All-IP History
Mobile IP and AAA
Status - Project Phases
Draft High Level Feature List
Architecture
– Basic Architecture Diagram
– IP Multimedia SIP Services
– IP Multimedia Services Architecture
• Convergence with 3GPP All-IP Core Network
• The Future
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Quick All-IP History
• Ad Hoc formed to perform initial feasibility study - November
1999.
• Ad Hoc results submitted to the 3GPP2 Steering Committee (SC)
at the November 2000 SC meeting in Tokyo - original Ad Hoc was
formally dissolved.
• New Ad Hoc was formed under TSG-S in December, 2000.
• Leadership team established:
– Mark Lipford (Sprint PCS) was appointed Chair.
– Mike Dolan (Lucent) was appointed as Vice Chair.
• Operates with some level of autonomy as instructed by the
3GPP2 SC, and reports regularly to TSG-S – meets with other
TSGs
• AdHoc charter includes Requirements, Architecture, and Project
Management.
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Mobile IP, IPv6, and AAA
• The 3GPP2 All-IP architecture is based on the
use of Mobile IP, SIP, and AAA protocols.
• IPv4 (and Mobile IP v4) support is necessary for
migration of existing networks. IPv6 (and
Mobile IP v6) is a very high priority.
• AAA (Authentication, Authorization, and
Accounting) protocol will likely be Diameter.
• Mobility across different access networks is a
requirement for All IP releases beyond 2001;
e.g., CDMA2000
IEEE 802.11b.
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Status - Project Phases
• The following standard development phases have been defined.
– Phase 0 - Encompasses standards that are already complete and have been
balloted by the SDOs.
– Phase 1 - Encompasses technical specifications that are currently being
completed in 3GPP2 including the initial release of the Legacy MS
Domain.
– Phase 2 - Includes specification development work that began in mid-2001.
This will include support for the IP Multimedia Domain. The work will
likely be done across more than one release, the first being in 2002.
– Phase 3 - Includes specification development work that will add more
functionalities to the IP Core Network. This work will complete after
2002.
• An Evolution Plan document that defines operator deployment options
is in development.
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High Level Feature List
• Partial list of All-IP high level features:
1. IP Multimedia Domain
2. Legacy Mobile Station (MS) Domain
3. IP Transport
4. IPv6 Support
5. IP-based Service Architecture
6. End to End QoS Support for Both Domains
7. Security
8. OAM&P (Operations, Administration, Maintenance, and
Provisioning)
9. Authentication, Authorization, and Accounting
10. Mobility based on Mobile-IP
11. Voice over IP based on SIP signaling.
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Status - Architecture Document
(NAM)
• The Network Architecture Model (NAM) document
contains:
– The general network entity view with descriptions of all
entities and reference points.
– A set of different “detailed” views providing
perspectives on various architectural aspects.
• The NAM version is being updated at present as the
various 3GPP2 TSGs determine architectural
improvements to be made.
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3GPP2 All-IP Architecture
Network
EIR
Subscription
Profile
DSI
Policy
Rules
Advertising
Agent
7
...
Service
Application
Databases
1
2 3 4
5
6
Subscription
Quality of
Service
Manager
8
10
11
9
Position
Server
18
AAA
15
19
20
21
16
22
12
13
Session
Control
Manager
17
Trunk
Signaling
Gateway
Core
Quality of
Service
Manager
28
cdma2000 Access Network
BSC/RNC
+ PCF
27
31
Access
Gateway
32
35
36
MM
FA /
Attendant
Other Access Networks
41
43
Media
Gateway
37
Mobile IP
Home
Agent
Line 47 from the Mobile
Station represents all
bearer and signaling
to/from the network.
30
Media
Resource
Function 33
38
34
39
PSTN
40
42
Border
Router
44
45
46
47
Mobile
Station
Dashed lines indicate
signaling paths.
26
Media
Gateway
Control
Function
29
Legend:
Solid lines indicate
bearer paths.
25
24
23
Position
Determining
Entity
BTS
Roaming
MAP
Signaling
TIA/EIA-41
Gateway 14 GSM
Network
Capability
Gateway
Legacy MS
Domain
48
Support
IP
Network
Dashed line boxes
around groups of
entities indicates a
collective entity
consisting of multiple
functions.
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IP Multimedia SIP Services Control Plane View
Home Service
Network
Visited
Network
Mobile
Station
local
AAA
Service
Application
8
11
16
IP
Multimedia
Client
(Local)
Session
Control
Manager
dd
17
12
home
AAA
ee
16
24
(Proxy)
Session
Control
Manager
Media
Gateway
Control
Function
Network
Capability
Gateway
16
dd
Media
Resource
Function
(Interrogating)
Session
Control
Manager
ff
(Serving)
Session
Control
Manager
17
Media
Gateway
Control
Function
24
Media
Resource
Function
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IP Multimedia Services Architecture Control Plane View
Generic Application
hosted in the
general Internet, no
interaction with the
WNO network
Hosted in
WNO
equipment
Hosted in a third
party, in a private
network, or in
general Internet
equipment
A
B
C
Service
Application
Service
Application
Service
Application
8
Wireless Network
Operator (WNO)
Network
8
Network
Capability
Gateway
10
11
Position
Server
15
AAA
16
12
Session
Control
Manager
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Convergence with 3GPP Core Network
• Efforts are underway from all major manufacturers
to ensure convergence of the 3GPP and 3GPP2
IP-based core networks.
• Variations in the core architectures are being
addressed and unified, where possible.
• Message Flow work done in 3GPP is being
adopted into the 3GPP2 work to ensure
compatibility in SIP based wireless telephony.
• Diameter is being considered for accounting
functions by 3GPP.
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The Future
• Convergence toward an IP-based core network
that is independent of the access network.
• Use of multiple access networks: CDMA2000,
W-CDMA, 802.11b, Ethernet, … over a single
core network.
• Integrated access technologies in terminals that
allow the user to move from a cellular
environment, to a campus wireless environment,
to a wired environment - seamlessly.
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