Network Architecture for WiMAX applications - apricot

20 Pages·2005·5.23 MB·English

Network Architecture for
WiMAX applications
Robert Healey
Senior Product Manager, APAC
[email protected]
Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidential www.juniper.net 1
Agenda
! Mobile market trends in APAC
! What’s happening in mobile infrastructure network (and why!)?
• Packet optimization for 2G networks
• Packet evolution for 3G
• Operator case studies
! WiMAX – Friend or Foe?
• WiMAX backgrounder
• Positioning compared with cellular
! Summary – Key Trends for 2005
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
2
Mobile Operator Evolution
Transformation
Cost effective
TDM ATM
IPv4/6 MPLS
Transport
Backbone
PPaacckkeett RRAANN
Location-based
MMS
Services
Corporate
SMS/MMS Intranet & Email
Data Services and eCommerce
$$
Wireline Displacement
Circuit Packet
Gaming and
Voice Voice
Entertainment
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
3
Applications and Drivers
! Mobile operators actively building out IP/MPLS core networks
• Capex and ongoing opex savings – consolidate multiple networks
• Migration of SS7 over IP using Sigtran techniques
• High Availability infrastructure to support VoIP; PTT launching now
! Wireless data services picking up
• Recent growth driven by new terminals & applications
• Required to counter declining voice ARPU and competition
“AIS launching 40 new data applications this year as part of an objective to
double non-voice revenues” CEO Somprasong Boonyachai
! Access costs still major opex factor – looking at means to optimise
! Increasing corporate market for mobile data
! Lots of Hype on WiMAX…
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
4
Agenda
! Mobile market trends in APAC
! What’s happening in mobile infrastructure network (and why!)?
• Packet optimization for 2G networks
• Packet evolution for 3G
• Juniper operator case studies
! WiMAX – Friend or Foe?
• WiMAX backgrounder
• Positioning compared with cellular
! Summary – Key Trends for 2005
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
5
CDMA – Optimising 2G with IP Backhaul
! Today’s challenge
• Optimise
established 2G
TDM RAN to
handle continued
scaling
! Objective: Reduce
RAN Opex by
moving to IP
backhaul for 2G
voice and data
• 10-30% savings
in compression
moving to IP
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
6
Packet Architectures for 3G
CDMA2000 EV-DO – IP based
! 3GPP2 specifies either ATM or IP transport from EV-DO base station
! EV-DO deployments nearly all now based on native IP
! Aggregation IP layer – key requirements – scaling and High Availability
! APAC Mobile operators already deploying
GE
nxE1
GE/FE
Ch
STM-1
BSC/PCF
Ethernet
SDH switches
EVDO Base
EVDO Mux
IP Aggregation Layer
Stations
users
Service Provider Routers
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
7
Example Asian UMTS-WCDMA Operator
New IP-MPLS Multiservice core
All Data and Voice
supported on Single
3G Media Gateway MPLS Network
IuCS
(VoIP trunking)
IuCS
Strict SLA for VoIP –
MPLS
Backbone millisecond recovery
IuCS, Iur
PoS & GE
times required – use
of advanced IP
IuPS
RNC techniques
IuPS
IuPS
IuCS 3G Media Gateway
IuCS (VoIP trunking)
3G SGSN
IuCS
IuP
S
Leverages ATM over MPLS RNC
ATM STM-1
Removes need for separate ATM network!
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
8
Example Asian UMTS-WCDMA Operator
Advanced High Availability design
MPLS
BFD running on router-
Backbone
router GE links for
PoS & GE
1+1 SDH
millisecond failure
Protection
3G detection
MGW/
Graceful restart enabled between
RNC/
routers – enabler for network wide
3G hitless software upgrades
SGSN
MPLS Traffic
Engineering
with Fast
Reroute for
Strict SLA for VoIP – millisecond
recovery
millisecond recovery
times required:
required advanced
router techniques!
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
9
Asian Mobile Operator: New service
– Mobile VPN access
! Objective – provide VPN access for variety of mobile corporate users
! Outsource mobile remote access management from corporates, and
CPE
aggregate users in a layer 3 VPN
! Solution:
Mobile users mapped
into corporate VPNs
IPSEC / L2TP
(RFC 3193)
MPLS
Backbone
WiFi User with
Windows Client
L2TP
Tunnel
3G and 2G users Gateway SSL Access growing
LAC
MPLS PE in interest also
Confidential and Internal
Copyright © 2004 Juniper Networks, Inc.
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