9B_AicentInter-standardDataRoaming062603final

7/28/2019 9B_AicentInter-standardDataRoaming062603final

1/24

Copyright 2002 Aicent, Inc.

Inter-standardPacket Data Roaming

CDG International Roaming Team MeetingOrlando, June 26-27, 2003

David [email protected], & VP of Engineering

Aicent, Inc.


2/24

2 Copyright 2003 Aicent, Inc.26 June 2003 CDG Meeting, Orlando

Agenda

Market demand for inter-standardroaming

Requirements and solution highlights

Discussion for option 1 and option 2

Summary


3/24


Brief Introduction about Aicent

Headquarter in San Jose, CA; offices in major Asia citiesFounders and core team from GRIC, worlds largest ISP roamingservice provider

Aicent operates one of worlds largest GPRS RoamingeXchanges (GRX)

Directly connected to 20+ leading GPRS operators Representing 200M+ mobile users

Currently handle data roaming traffic with 100+ GPRS operators Extensive international peering agreements

Active contributing member in GSMA Major Task Forces: GRX, MMS, WLAN

CDG Roaming Team member since Q4, 2002Focusing on CDMA packet data roaming and IO-MMS


4/24


Market Demand For Inter-standard Roaming

Roaming coverage complementary to CDMA countriesCDMA in 59 countries, 166 operators (per CDG)GSM in 197 countries, 400+ operators (per GSMA)

Most significantly: Western Europe, Singapore, etc.

Premium roaming revenues from GPRS/UMTSoperators

150+ GPRS/UMTS operators as of today

Technology harmonization

Dual-mode chipset becoming availableStandard body co-operation OMA, 3GPP, 3GPP2, GSMA, CDG, IETF, TIA

Dual-technology operators Both CDMA and GPRS/UMTS


5/24


Inter-standard Packet Data Roaming RequirementsMobile devices and SIMs (Handsets, Aircard)

GPRS phone + SIM/R-UIM; CDMA phone + SIMDual mode CDMA/GPRS phoneNetwork

IIF (Interworking and Interoperability Function) GSM/ANSI-41

IP interconnectivity and network element locating Authentication Security and QoS DNS, AAA

BillingCDR MediationBilling record conversion (TAP3/CIBER), Data Clearing andFinancial Settlement, Fraud Management

Roaming Agreement


6/24


Solution Option Highlights

Option 1: CDMA roaming in GPRS using GGSN in CDMA

GPRS (SGSN) CDMA (GGSN)

Option 2:CDMA and GPRS two-way roaming using Mobile IP

GPRS (GGSN/FA) CDMA (HA) CDMA (PDSN/FA) GPRS (HA)


7/247 Copyright 2003 Aicent, Inc.26 June 2003 CDG Meeting, Orlando

Discussion for Option 1CDMA roaming in GPRS using GGSN in CDMA



Components for CDMA --> GPRS Roaming

SGSN

DNS

VLR

BS

GGSN

DNS

HLR

BS

C7/SS7IIF

GRX/CRX

DNS

DataClearing

& Settlement

CDMA 1XNetwork

GPRSNetwork

CDMA terminalRegistration via signaling network SGSN attach in GPRS network PDP activation at GGSN in CDMA with APNInter-OP IP backbone and locating GGSNData clearing and settlement



GPRS Capable Handset for CDMA Roamer

Terminal supporting both CDMA 1X andGPRS

Qualcomms MSM6500 chipset solution Dual-mode CDMA 1X/GPRS handset with UIM cardSingle mode GPRS handset with one SIM/R-UIM

Terminal supporting GPRS setting APN (Access Point Name) to be provisioned

user-name@domain/password (optional)



Interworking and Interoperability Function IIF: (J-STD-038)- Subscriber location registration

- MAP Interface between(Originating/Gateway MSC Serving MSC interface)- Interface for MC/SMS-SC and serving MSC- Resides in GSM, ANSI-41, or both, or at a 3 rd party

Signaling Control Interface via IIF Reference Model

AC

MSC

HLR

VLR

MC

H

TIA/EIA-41Network Entities

GSMNetwork Entities

AuC

MSC

HLR

VLR

H

IIF

SMS-SC

D

D

D

D

EQ

N

EE

SMS-IWMSC

SMS-GMSC

E

SGSN

Gr



GPRS SGSN Attach (Example) (J-STD-038)

MS SGSN IIF HLR

GPRS Attach Req

Authentication Info

Authentication Info Ack

Authentication Req

Authentication Res

Update GPRS Location Req

GSM NETWORK ANSI-41 NETWORK

(IMSI)

(IMSI, SGSN Address)

a

b

c

d

e

f

gREGNOT

Insert Sub Data

Insert Sub Data Ack

Update GPRS Location Ack

GPRS Attach Accept

h

i

j

Regnot ack

k

l



GPRS Reference Model In GPRS Operator Environment

Gf

Uu

Um

D

Gi

Gn

Iu

Gc

C E

Gp

Gs

MSC/VLR

TE MT UTRAN TE PacketData Network

Gr

Iu

HLR

Other PLMN

SGSN

GGSN

Gd

SM - SC SMS - GMSC

SMS - IWMSC

GGSN

EIR SGSN

Gn CGF

Ga Ga

Billing System

Gb

TE MT BSS R

A R

CAMEL GSM - SCF

Ge

3GPP TS 23.060 Rel6



GPRS Roaming Network Model

Operatorsinterconnected byGRX

Highly secure and closedIP interconnectionQoS IP backboneHighly scalable

Key components APNDNS for GGSN location

GPRS Roaming Network

GRX GRX

GRX

DNS DNS DNS

Operator A

Operator B

Operator C

Operator E

Operator D

Operator G

Operator F

GSMA PRD IR 34



GRX/CRX

Root DNS

PEPE

DNS

Visiting GPRSOperator

DNS

HomeCDMA 1X Operator

SGSN

BSC

BTS

WAP GW

CDMA 1X Roamer

BG BG

CGFHLR

GGSN

Gn Subnet

Gn Subnet

Assuming CDMA 1X roamer has been attached to local SGSNWhen the roamer requests PDP Context Activation , local SGSN executes the activation procedure based onroamers APN and the policies set in Home HLR, where HPLMN ONLY should be set in this case Local SGSN composes the DNS query strings in the format of apn.mncxxx.mccxxx.gprs to query local DNS Local DNS locates the domain via GRX Root DNS, and continue to query the CDMA operators Home DNSaccording to the information acquired from GRX Root DNS, and resolve the IP address of CDMA OperatorsGGSN that serves the APN. With the IP address of CDMA Operators GGSN, local SGSN set up an GTP-U tunnel to the remote GGSN Further, CDMA Operators GGSN assigns an IP address to the roaming terminal.

Non-transparent: Require 2 nd level authentication for [email protected]/password with AAATransparent: Do not require the 2 nd level authentication

The roamer accesses to CDMA operators home WAP Gateway or other services

DNS

PDP

CDMA to GRPS roaming via GRX/CRX

AAA


15/24


CDMA GPRS Roaming for Corporate Access

GRX/CRX

RootDNS

VisitingDNS

HomeDNS

AAA

[email protected]/passwordGPRSOperator CDMA 1X

Operator

corp.com

CorpAAA

( [email protected]/pwd )

SGSN GGSN

GTP L2TP/IPSec

Wireless device registration and SGSN attachmentPDP activation to find GGSN via APN and DNSNon-Transparent Authentication for the roamer with CDMA AAA relay to corp AAAOnce the user authenticated ,

Build the GTP tunnel between SGSN and GGSN over GRX Launch L2TP (or IPSec) tunnel to Corporate tunnel server

End-to-end secure and high QoS access to Corporate servers

CorpServerLNS


16/24


New Network Elements in CDMA 1X Operator

According to 3GPPs logic architecture, CDMA 1X operator mayintroduce a few new network elements

GGSN (Gateway GPRS Support Node) Gi, Ga, and Gc Interfaces (3GPP Release 6)

CGF (Charging Gateway Function) Ga Interface (3GPP R99 and Rel 5)

BG (Border Gateway) Gp Interface (BGP-4 Routing Protocol)

DNS (Domain Name System) Supporting DNS query to locate GGSN IP address

within the GPRS closed IP network domain

HLR

EIR

GGSN

CGF

BGSGSNLocal packet

Data Network GRX/CRX

C7/SS7

Network

GR

GF

Gp G A

GI

CDMA 1X Operator

Existing ElementNew Element

GC

DNS

GnSubnet


17/24


CDR Mediation and Settlement

SGSN

BS

GGSN

CGF

BS

GRX/CRX

DataClearing

& Settlement

HomeOperator (CDMA 1X)

VisitingOperator (GPRS)

AAACGF

TAP3 CIBER/TAP3

BS: Billing System

CGF: Charging Gateway Function

S-CDR G-CDR RADIUS-CDR


18/24


Deployment Effort For Option 1

Technical deployable today with less effort for CDMA operators

Additional equipment required (GGSN, BG, CGF, DNS)

Little effort required for GPRS operators

Readiness of the technology and the service

Immediate outbound roaming coverage in GSMcountries

Other equipment and commercial issuesHandsets, IIF Gateway, Roaming Agreement, Clearing andSettlement


19/24


Discussion for Option 2 CDMA and GPRS two-way roaming using MIP


20/24


3GPP (TS 23.121, Release 99) Reference Model

This model can be applied to two-way roaming

GGSN(FA) CDMA (HA)PDSN(FA) GPRS/UMTS (HA)


21/24


GRX

CRX

5. Activate PDPContext Accept

(no PDP address)

4. Create PDPContext Response(no PDP address)

2. Activate PDPContext Request

( APN=MIPv4FA )

IPv4 - Registration UMTS/GPRS + MIP , FA care-of address

TE MT Home Network

SGSN GGSN/FA

3. Create PDPContext Request

( APN=MIPv4FA )

6. Agent Advertisement

7. MIP Registration Request

9. MIP Registration Reply10. MIP Registration Reply

1. AT Command (APN)

8. MIP Registration Request

A. Select suitable GGSN

GPRS/UMTS (GGSN/FA) CDMA (HA)

PDP context activation with MIP registration (PPP setup and

GPRS/UMTS attach procedures not included)


22/24


CDMA (PDSN/FA) GPRS/UMTS (HA)

Similar to MIP CDMA-CDMA Roaming

Need to implementMIP function on the handsetIIF function

Authentication based on MSISDN [email protected]/password Inter-operator backbone (GRX/CRX)CDR mediation and settlement


23/24


Summary

Option 1 : (CDMA roaming in GPRS using GGSN in CDMA)Deployable today with less effort for CDMA operators

Additional equipment required (GGSN, BG, CGF, DNS)

Little effort required for GPRS operatorsReadiness of the technology and the serviceImmediate outbound roaming coverage in GSM countries

Option 2: (CDMA and GPRS two-way roaming using MIP)Technology and solution under developmentRequirement of equipment upgrade for GPRS operators


24/24

24 Copyright 2003 Aicent Inc26 June 2003 CDG Meeting Orlando

Thank You

[email protected]

Date post:	03-Apr-2018
Category:	Documents
Upload:	pablo-ballarin
View:	214 times
Download:	0 times

9B_AicentInter-standardDataRoaming062603final

Documents