Lucent Technologies Bell Labs Innovations Slide 1 2GPP2: Jan 06-07, 2000, Walnut Creek, CA cdma2000...

Lucent TechnologiesBell Labs Innovations

Slide 12GPP2: Jan 06-07, 2000, Walnut Creek, CA

cdma2000 3GPP2 All IP Network

Reference Model

Chung Liu +1 630-713-4770 [email protected] Sinclair +1 630-713-7327 [email protected]

(Refer to other contribution for detail assumption and description of network reference model with functional and interface description)



Signalling and Data Transfer Interface

Signalling Interface

Mi

Mi

Ms

MGW

MGCF

R-SGW

MRF

Multimedia

IP Networks

PSTN/

Legacy/External

Applications &

Services

Mm

Mw

Legacy mobile

signaling

Network

Mc

Mp

Mh

CSCF

CSCF

Mg

T-SGW

HSS

SCP

R Um

TE MT

A

M-IPPDSN M-IP HA

MxMx**

MiMi**

PiPi

C

cdma2000 All IP Reference Model (3GPP2)

RAN

Mr

Q: Should MGW directly from PDSN orM-IP HA ? Yes.Q: Should CSCF directly from PSDN or M-IPHA ? Yes.Q: Should use more generic name differentfrom 3GIP and 3GPP ? Q: Support simple IP ?

Mi**

**: Interfaces are needed when simple IP is applied.



New 3GPP2 All IP Network Elements

• Call State Control Function (CSCF) or Feature Server

– Call control related functionality: Call set-up/termination and control etc. – Mobility Management related functionality: Registration/VLR, serving FS location etc.

• Home Subscriber Server (HSS)– Contains HLR, AAA and UMS (User Mobility Server)

• Transport Signalling Gateway Function (T-SWG)

• Roaming Signalling Gateway Function (R-SGW)

• Media Gateway Control Function (MGCF)

• Media Gateway Function (MGW)

• Multimedia Resource Function (MRF)

• Anchor and Serving Packet Data Service Node (A-PDSN & S-PDSN)



Mi

MiMs

MGW

MGCF

R-SGW

MRF

Multimedia

IP Networks

PSTN/

Legacy/External

Applications &

Services

Mm

Mw

Legacy mobile

signaling

Network

Mc

Mp

Mh

CSCF

CSCF

Mg

T-SGW

SCP

R

TE MT M-IPPDSN M-IP HA

MxMx

Mi

Mi

PiPi

Mr

cdma2000 All IP Reference Model (3GPP2) with Detail RAN & HSS

Um

BTS PCF

A3 A10 (traffic)& A11 (signal) or R-P

SDU

WMSA1BSC

A8 (traffic)& A9 (signal)

BS

CRAN

HSS

UMSAAAHLR





Major 3GPP2 New & Enhanced Functionality

• cdma2000 Radio Interface– QoS control and negotiation– Radio Spectrum Efficiency Improvement (e.g. Overhead elimination)– Impact TE/MT, BTS, BSC and Um interfaces

• Radio Access Network– QoS control on SDU and existing A interfaces: A3 & A8-11

• Wireless Packet Data Network– New IP Network Elements: HSS, CSCF, MRF, MGCF, TSGW, MGW & R-SGW (see other slide)– Application level interaction with TE/MT – Enhanced PDSN (e.g. QoS and Compression with TE/MT)

• End to end Network Architecture and Scenarios

– Need standard group to address end to end all IP issues



3GPP2 Mobility Considerations (1)• Feature Server Location and Ownership

– Visiting Network and Service Provider• Similar to existing wireless network (call control in visiting network)

– Home Network and Service Provider• Call control in central location and special local feature server (e.g. E911) in visiting system• Might not need VLR

– Other Network and Service Provider (e.g. Third party)– Feature Server Discovery procedure

• Try to be transparent from underlayed protocol & procedure and discover FS anywhere

• PSTN to Wireless Call Termination (Call Setup)– All circuit approach (Existing ANSI41 approach: Circuit PSTN-Home-Visiting) - Reuse PSTN, ISUP and

ANSI41 – Partially packet approach (Circuit: PSTN-Home & Packet: Home-Visiting) - Reuse PSTN routing in originating

network and use packet between home and visiting network (See next slide)– All packet approach (all packet between originating and visiting network) - PSTN GW in originating network

with dedicated DN or IP address



3GPP2 All IP Reference Roaming Scenario



Mi

Mi

Ms

MGW

MGCF

R-SGW

MRF

Multimedia

IP Networks

PSTN/

Legacy/External

Applications &Services

Mm

Mw

Legacy mobile

signaling

Network

Mc

Mp

Mh

V-CSCF H-CSCF

Mg

T-SGW

HSS

SCP

R Um

TE MT

A

M-IPPDSN M-IP HA

Mx

Mx

MiMi

Pi

C

RAN

Mr

Home NetworkServing Network

Enhanced Alternatives: 1. MGCF, T-SGW and MGW could be in visiting network with PDSN2. M-IP HA could be in serving network with MGW, IP network & PSTN 3. MRF could be in serving network with PDSN (depending capacity)4. V-CSCF could be part of H-CSCF if Home Feature Server support basic call and supplemental features5. Dynamic HA capability in visiting network to reduce transport cost.

R-SGW

Legacy mobile

signaling

Network



3GPP2 Mobility Considerations (2)

• Traffic Termination Enhancements– Route the traffic directly from originating to visiting network

• Avoid IP traffic backhaul to home network always• Have regulatory issues ??

– Home Agent is closer to or in visiting network – PSTN Gateway in visiting network

• Handoff Mobility Enhancement (Active call) – Desirable to assign HA by visiting netork

• 2G and 3G Roaming and handoff Requirement?– All IP and All IP, 2G CS and 3G, 2G IP and All IP– 2G Inter-working via R-SGW

Lucent Technologies Bell Labs Innovations Slide 1 2GPP2: Jan 06-07, 2000, Walnut Creek, CA cdma2000...

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