Session 11_Huawei_3GPP2 Core Network Evolution

8/9/2019 Session 11_Huawei_3GPP2 Core Network Evolution

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3GPP2标准进展

卢义峰/李志明/吴卫东无线标准专利部

Core Network Evolution

HUAWEI

3GPP2 Evolution Workshop

Seoul, June 2005Notice

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Requirement

• High level requirement – Higher user data rates

– Improved system capacity and coverage

– Reduced latency – Reduced overall cost (Low CAPEX and COEX)

• Various access networks support – Inter-RAT mobility management

– Service continuity between different access system

– Simultaneous accessing different system

• Core network evolution – Compatible with existing access network

– Interworking with existing CN network

– Migration CS service including SS to PS domain – Scalable, simple and easy




Performance (1/5)

• Delay reduction

– Reduce un-necessary interim processing of IP packet

on the data path• IP Packet compression/decompression between the AN and

the MS

– Reduce data hop number • Optimization of data flow for real time multimedia flow

• Generally, intra-city call (located in the same PCF and PDSN)

take 40%, this is a big saving

– Avoid transmission congestion

• QoS control




Performance (2/5)

AN/PCF2

PDSN

AN/PCF1

AT1 AT2

PDSN

AN/PCF

AT1 AT2

AN/PCF2

PDSN1

AN/PCF1

AT1 AT2

PDSN2

AN/PCF

AT

PDSN

GW

SIP Phone

SIP proxy

1): Intra-PCF 2): Inter-PCF, Intra-PDSN

3): Inter-PCF, Inter-PDSN 4): different system

Data path optimization




Performance (3/5)

• QoS – Application QoS

• Radio resource (AN)

• Core Network Resource (PDSN/HA)• Transmission Resource

– Considering the increased DL/UL data rate (100M/30M), thetransmission resource among AN/PCF, PDSN, HA, PDN andinternet will become the bottleneck in the future.

– Operator needs cost-effective bearer for IOS interface to meetvary kind of network deploy scenario

– Diffserv and MPLS TE can’t solve QoS problem completely,Over-Provisioning is still widely used

– Transmission resource management should under the operator’sservice control, available transmission resource and granularityof resource should notify the resource management point toavoid transmission congestion


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Performance (4/5)

PS core

IMS

PCRF

Transport network

RM

PDSN

WLAN PDIF

CDMA

RAN

RM: Resource management

Network Resource

control

User Data

Signaling

QoS management(Transport network and CN network owned by the same operator)




Performance (5/5)

PS core

IMS

PCRF

Transport network

RM

PDSN

WLAN PDIF

CDMA

RAN


Network Resource

control

User Data

Signaling

QoS management(Transport network and CN network owned by the different operator)

RM

Operator B

Operator A


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Multi Access System (1/5)

PS core

IMS

PCRF

Transport network

RMPDSN

WLAN PDIF

CDMA

RAN

RM: Resource managementInter-AS MM: Inter-access system mobility management

Network Resource

control

User Data

Signaling

Inter-AS MMHA

AAA




• Mobility management – MIP

• HA acts as the anchor point between different access system

• HA forward data to PDSN or PDIF based on the accesssystem mobility info

• PDSN or PDIF forward data to destination via HA

• There has no impact on IMS domain

– Simple IP• Re-negotiation procedure just as today

– Inter-AS MM

• Manage different access system attach info• Interact with AAA to notify HA the current access point and

routing info

• Interact with IMS for presence and other service




• Service continuity

– MIP can support session continuity, still not

enough for seamless service

– Big challenge to real-time multimedia service




• Simultaneous access – Increase user experience

– Increase operator’s profit – Application based

– IP address based

– Flow based need• Schedule

• Different flow combination

• Sequence

• QoS

– Common charging should support




• Roaming

– Service control information communication

• IMS based

– Different operators

• AAA based – inter access systems mobility info

communication

• AAA based




Core Network Evolution (1/2)

PS core

IMS

PCRF

Transport network

RMPDSN

WLAN PDIF

CDMA

RAN


Network Resource

control

User Data

Signaling

Inter-AS MM




Core Network Evolution (2/2)

• Migration CS domain service

– Voice

– Fax

– SS

– SMS



Documents

Session 11_Huawei_3GPP2 Core Network Evolution