Transcript All-IP Backhauling CE2007

Customers’ Event
Crete, May 2007
Step-by-Step Migration to an
All-IP Mobile Backhaul Network
Cellular
Presented by:
Issar Krausz
Business Development senior Manager
Outline
• Backhaul at the Spotlight
• The Challenge
• Transport cost reduction
• Packet-based Transport
• Pseudowires
• New Transport Alternatives for Mobile Backhaul
• Transport for Fixed and Mobile Convergence
All-IP Backhauling CE 2007 Slide 2
Cellular Backhaul
From the Backstage
to the Spotlight
All-IP Backhauling CE 2007 Slide 3
It’s All About Customer Experience
Higher Speed, Richer Content
Internet Surfing
HSPA
Interactive Gaming
Video Conferencing
UMTS
Video Telephony
Video Streaming
EDGE
Audio Streaming
Video Download
Audio Download
GPRS
MMS
Internet
Rich call services
E-mail
Content to person
SMS
Messaging
40 Kb/sec 75 Kb/sec
•
2 Mb/sec 14 Mb/sec
1 Minute of audio from MP3 music file equals:
•
132 seconds – GPRS
•
22.4 seconds – UMTS
•
4.1 seconds - HSDPA
All-IP Backhauling CE 2007 Slide 4
The Rapid Bandwidth Increase
No. of E1 Links per Cell-site
• Worldwide mobile subscriber base keeps increasing
• According to Infonetics’ October 2006 report, Mobile Backhaul Equipment,
Installed Base, & Services Market Outlook, there were more than 2 billion
mobile subscribers worldwide in 2005, and that number will jump to over 3 billion
by 2009
• Enhanced user-experience demands higher-speed data rates
• Video streaming, MP3/MP4 downloads, MMS, peer-to-peer applications, Mobile TV
• NG mobile standards and services are within reach
• LTE – 100Mbps
2006
12%
2009
6%
39%
33%
1E1 - 2E1
3E1 - 5E1
> 5E1s
82%
28%
Source: Heavy Reading, Dec. 2006
All-IP Backhauling CE 2007 Slide 5
Cell-site Transmission Evolution
Cell Site
2G TDM
1-2  E1/T1
2G BTS
3G Node B
3G ATM Voice
2-4  E1/T1
HSDPA ATM Data
up to 8 E1/T1
Transport
Network
PDH, SDH, LL
• New services = more transport bandwidth right out of the cell-site
• Access becomes the BW bottleneck
• PDH/TDM is not a scalable solution
• HSDPA – the “killer application” for mobile backhaul
All-IP Backhauling CE 2007 Slide 6
HSDPA
The backhaul “killer application”
Source: Unstrung Insider
• Mobile data traffic to double within the next 12-18 months*
• Data volumes in backhaul to surge to 3-4 times current levels within 2 years
• Mobile data ARPU will not keep the pace
* According to Strategic Analysis, Nov. 2006
All-IP Backhauling CE 2007 Slide 7
The Challenge
Optimizing the Cellular Backhaul
• Challenge - Handling capacity growth
• Backhaul represents 70% of the transport costs
•
About 30% of the OPEX (incl. site rental, maintenance, technical
sup., etc)
• Evolution to future ready transmission – All-IP and FMC
• Solution – Cost reductions thru
• Abis/Ater BW optimization and data compression
• Sharing a single transport network by 2G/2.5G and 3G traffic
• Statistical Multiplexing with traffic prioritization
•
Iub optimization adapted to HSDPA sales growth/strategy
• Backhauling over alternative technologies and media
•
Packet-based transport
•
Using low cost xDSL access
All-IP Backhauling CE 2007 Slide 8
Optimization of A-bis/A-ter
Backhaul Links
GSM
BTS
A-bis
Optimization
E1
E1
Vmux-400
TDM/IP
Transport
Network
A-bis
Optimization
BSC
E1s
Vmux-400
GSM
BTS
• Reducing backhaul expenses by more than 50%
• Reduce no. of E1 trunks for BTS-BSC connectivity with no voice quality degradation
• Smallest footprint device in the market – save on co-location costs
• A-bis/A-ter traffic optimization for efficient use of backhaul links – leased
lines, satellite links and microwave
• Data Compression
All-IP Backhauling CE 2007 Slide 9
Cut Backhaul Costs thru Aggregation
GSM
BTS
E1/T1s
TDM
E1/T1s
ATM IMA
n  E1/T1 TDM 2G BSC
Ch-STM1/OC-3
N x E1 > n x E1
Cell-site
Gateway
n x E1/T1 (IMA)
STM-1/OC-3
ACE-3x00
SDH/SONET/
ATM
Transport
Network
STM-1/
OC-3
Multi-Service
Aggregation
ACE-3x00
IP-Node B
n x E1/T1 IMA
STM-1/OC-3
3G RNC
Ethernet
GbE
• Substantial cost savings by
• Aggregation, Grooming, Overbooking/Oversubscription
• Aggregation/grooming of GSM and UMTS traffic onto a unified transport
• Statistical multiplexing of UMTS/HSDPA traffic based on ATM capabilities
• Dynamic bandwidth allocation based on operator’s predefined priorities
• Flexible port configuration to support GSM and UMTS
All-IP Backhauling CE 2007 Slide 10
What have we achieved so far?
Cell Site
2G TDM
1-2  E1/T1
2G BTS
3G Node B
3G ATM Voice
2-4  E1/T1
Transport
network
HSDPA
up to 8 E1/T1
The traditional approach
8-16 E1/T1 for a full service offering
Savings of over 80 Million Euros/year
2G BTS
E1/T1s
Optimized approach
2G TDM
1-2  E1/T1
6-8 E1/T1 links
3G ATM
2-4  E1/T1
(*) Further optional reduction
using low-cost packet transport
3G Node B
HSDPA
up to 8 E1/T1
Cell Site
Cell-site
Gateway
ATM or
SDH/SONET
Transport
Network
ACE-3x00
FE (*)
Packet
Switched
Network
All-IP Backhauling CE 2007 Slide 11
What else can be improved?
• There are two main alternatives being considered for
additional backhaul cost reduction
• Using packet-switched transport
• Complement by using DSL access
All-IP Backhauling CE 2007 Slide 12
Why Packet-based Transport?
• Ethernet presents the most scalable and flexible transport solution to
meet the BW challenge right off the cell site
• The cost for leased lines is about 2.5 times
that of new wireline connections
(Ethernet, DSL, cable, PON)
• Ethernet is a future proof RAN
transport technology
• 3G/3.5G/4G, WiMAX and FMC backhaul
• Ethernet can be extended to the cell
site over various low-cost technologies
• Different types of DSL
• p2p and p2mp (PON) fiber connections
• WiMAX and Ethernet-based radios
Ethernet Transport Media
Fiber
Microwave
Copper
HFC PON EFM
Cable
xDSL
Wireless Mesh
• HFC
All-IP Backhauling CE 2007 Slide 13
Lesson in History
What are Pseudowires?
• Pseudowire is a mechanism that emulates the essential
attributes of a telecommunications service over a packet-
switched network
• TDM leased line, ATM or Frame Relay
• It defines a way to packetize and encapsulate data and create a
logical link between two network entities
• Pseudowire technology is an enabler for circuit emulation and
service emulation of legacy services over packet networks
Tunnel
CLE/CPE
TDM, ATM
FR, etc.
CLE/CPE
PWE3 #1
PWE3 #2
Legacy
Service
Pseudowire
Legacy Emulated Service
Legacy
Service
All-IP Backhauling CE 2007 Slide 15
Pseudowire Standards
IETF
ITU-T
MFA
TDM circuit emulation
ietf-pwe3-tdmoip
Y.1413, Y.1453,
Y.1414, Y.1452
IA 4.0
CESoPSN
TDM circuit emulation
ietf-pwe3cesopsn
Y.1413, Y.1453
IA 8.0
MEF 8
SAToP
TDM circuit emulation
RFC4553
Y.1413, Y.1453
None
MEF 8
HDLCoPSN
HDLC transport
RFC4618
None
None
None
ATMoPSN
ATM service transport
RFC4717
Y.1411, Y.1412
None
None
FRoPSN
Frame Relay service
emulation
RFC4619
X.84
None
None
Standard
Application
TDMoIP
IA 5.0
MEF
MEF 8
• RAD is actively involved in most of the standardization bodies
All-IP Backhauling CE 2007 Slide 16
Saving with Packet-based Transport
“All-IP Transport”
GSM
BTS
2G BSC
n  E1/T1 TDM
E1/T1s
TDM
E1/T1s
ATM IMA
Cell-site
Gateway
FE
ACE-3x00
UMTS
Node B
Packet
Switched
Network
Multi-Service
Aggregation
GbE
ACE-3x00
n x E1/T1 IMA 3G RNC
STM-1/OC-3
ETH
GbE
IP-Node B
• All-IP unified transport - Future-ready solution
• FMC/IMS
• Ready for UMTS Rev.6/7 and over
• All TDM and ATM legacy traffic is transported over pseudowires
• Clock distribution across the packet network
• Dedicated ACR (Adaptive Clock Recovery) mechanisms
• Meet the ITU-T G.823 sync. requirements and G.8261 mask
• Evolution to IEEE-1588
All-IP Backhauling CE 2007 Slide 17
HSDPA Offload
1st Migration Step – The Hybrid Approach
GSM
BTS
E1/T1s
TDM
E1/T1s
ATM IMA
UMTS
Node B
n x E1/T1
STM-1/OC-3
ATM or
SDH/SONET
Access Network
2G BSC
n  E1/T1 TDM
Cell-site
Gateway
STM-1/OC-3
GbE
ACE-3x00
Multi-Service
Aggregation
ACE-3x00
n x E1/T1 IMA
STM-1/OC-3
3G RNC
ETH
FE
IP-Node B
Packet
Switched
Network
GbE
Signaling and Abis traffic
3G real-time traffic (voice and video)
3G HSDPA and non-delay sensitive traffic (data)
• First step of the migration to packet switched network
• Separation of transport to carry
•
GSM/TDMA and UMTS real time voice and video over SDH/SONET or ATM
•
UMTS HSDPA data traffic mapped to pseudo-wires over PSN
• Ensures QoS for voice and real-time traffic
All-IP Backhauling CE 2007 Slide 18
The Hybrid Solution over a
Wholesale Backhaul Service
Voice and Real-time
over existing infrastructure
GSM
BTS
E1/T1s
TDM
E1/T1s
ATM IMA
n x E1/T1
STM-1/OC-3
ETH
2G BSC
n  E1/T1 TDM
Cell-site
Gateway
Multi-Service
Aggregation
STM-1/OC-3
ACE-3x00
UMTS
Node B
ATM or
SDH/SONET
Access Network
ETH
GbE
DSL
Modem
ACE-3x00
n x E1/T1 IMA 3G RNC
STM-1/OC-3
Packet
Switched
Network
IP-Node B
DSLAM
GbE
HSDPA over
ADSL2+/VDSL2 wholesale
•
Reduce Opex by using E1/T1 links only for the voice traffic
•
Scalable cost-effective broadband transport service over DSL (wholesale)
•
HSDPA will serve mainly for Internet access and fast downloads – mobile broadband
•
•
Similar to residential DSL services
Two options to be considered
•
ADSL2+ - applicable for HSDPA (HSUPA may require more UL BW)
•
VDSL2 - applicable for HSxPA
All-IP Backhauling CE 2007 Slide 19
Leverage Copper Using DSL
GSM
BTS
2G BSC
E1/T1s
TDM
E1/T1s
ATM IMA
n  E1/T1 TDM
Cell-site
DSL Gateway
With Bonding
xDSL
LA-130
UMTS
Node B
DSLAM
ATM or
Packet-switched
Transport
Network
Multi-Service
STM-1 Aggregation
GbE
ACE-3x00
n x E1/T1 IMA
STM-1/OC-3
3G RNC
ETH
IP-Node B
Multiple
SHDSL links
or
ADSL2+, VDSL2
GbE
• Leverage existing DSL and DSLAM infrastructure for access to cell sites
• Use multiple DSL links (with copper bonding) for higher bandwidth,
longer reach and dynamic adaptivity to available DSL links
• TDM/ATM/Ethernet-over-PSN PW encapsulation over DSL
All-IP Backhauling CE 2007 Slide 20
The Hybrid Approach in a
DSL/PSN Environment
GSM
BTS
2G BSC
n  E1/T1 TDM
E1/T1s
TDM
E1/T1s
ATM IMA
UMTS
Node B
DSLAM
Cell-site DSL
Gateway
n x SHDSL
LA-130 NG
ADSL2+ /
VDSL2
ATM or
Packet-switched
Transport
Network
Multi-Service
Aggregation
GbE
ACE-3x00
n x E1/T1 IMA
STM-1/OC-3
3G RNC
Ethernet
IP-Node B
•
Mix of DSL technologies in a PSN environment
•
Differentiate class of service
•
•
SHDSL for high quality services
•
ADSL2+ and VDSL2 for lower class of service
GbE
Solving reach and BW challenges
•
SHDSL for symmetrical traffic with long reach and relative low bandwidth
•
ADSL2+ for asymmetrical traffic (HSDPA) with mid reach and high download bandwidth
•
VDSL2 for symmetrical and asymmetrical traffic with low reach and high bandwidth
All-IP Backhauling CE 2007 Slide 21
A Glance at the
Transport for FixedMobile Convergence
All-IP Backhauling CE 2007 Slide 22
Backhaul over the Fixed and
Mobile Converged Transport
Residential
Triple
Play
GSM
BTS
DSLAM/
CMTS
ISP
3G RNC
ATM
E1/T1s
TDM
E1/T1s
ATM IMA
ETH
ACE-3100/3200
UMTS
Node B
ETH
Multi-Service
Aggregation
Cell-site
Gateway
Packet
Switched
Network
ETH
ETH
ACE-3x00
2G BSC
Business
TDM
IP-Node B
• Single packet-switched infrastructure for multiple mobile and wireline services
• Aggregation of 2G TDM traffic and 3G ATM traffic onto the Triple/Quadruple
Play and business services infrastructure
• Tunneling of legacy traffic using standard pseudowire technologies
• TDM/CESoPSN and ATMoPSN based on IETF standards
All-IP Backhauling CE 2007 Slide 23
Leverage the IP DSLAM
Infrastructure
Residential
Triple
Play
GSM
BTS
ISP
E1/T1s
TDM
E1/T1s
ATM IMA
Cell-site
DSL Gateway
With Bonding
LA-130
UMTS
Node B
xDSL
2G BSC
3G RNC
TDM/ATMoPSN
Aggregation Device
IP DSLAM
Packet
Switched
Network
GbE
TDM
ACE-3400
ATM
Ethernet
ETH
Business
IP-Node B
• Further integration for full FMC implementation
• Utilize the same infrastructure as the one used for IPTV
All-IP Backhauling CE 2007 Slide 24
…and one more to go
All-IP Backhauling CE 2007 Slide 25
Voice Trunking
BW savings in the Inter-MSC Links
MSC Site
Voice Trunking
STM-1
E1s
MSC Site
MSC
Gmux-2000
Voice Trunking
MSC
STM-1
E1s
TDM
Network
Remote MSC Site
Gmux-2000
MSC/BSC
Voice Trunking
•
Significant cost savings
•
E1s
Vmux-2100
E1s
Up to 16:1 voice compression ratio
•
Excellent voice quality for customers satisfaction
•
Fast ROI – less than 6 months
•
Future proof - supports TDM and IP networks for seamless migration to NG transport
•
Supports all types of signaling
• Optimized HDLC/SS7 signaling transport
All-IP Backhauling CE 2007 Slide 26
Migration to IP Backbones
MSC Site
Voice Trunking
and Media Gateway
STM-1
MEGACO
MSC Site
Voice Trunking
and Media Gateway
MSC
Gmux-2000
MSC
STM-1
MEGACO
IP
TDM
Network
Remote MSC Site
Gmux-2000
Voice Trunking
and Media Gateway
NG-MSC
Softswitch
MSC/BSC
MEGACO
Vmux-2100
NG-MSC
E1s
NG-MSC
VoIP
VoIP
• Leverage the existing backbone segments while introducing NG-MSC
switches
All-IP Backhauling CE 2007 Slide 27
…to wrap up
All-IP Backhauling CE 2007 Slide 28
Migration to All-IP
Cellular Network
Abis/Ater/
A/E Optimization
n  E1/T1
TDM
IP DSLAM
DSL
GSM/GPRS
BTS
2G/3G Backhaul
over xDSL
ATM DSLAM
n  E1/T1
CDMA
BTS
TDM/ATM
DSL
ETH
ATM
ATM
PSN
Ethernet/
IP/MPLS
Conversion
to PSN
2G/3G
Aggregation
n  E1/T1
TDM/ATM
ETH
LTE/WiMAX
n  E1/T1
PDH/SDH
CDMA 2000
Node B
n  E1/T1
HSDPA Traffic
Segregation
n  E1/T1
TDM/ATM
E1/T1
Clock Distribution
over PSN
STM-1/OC-3
UMTS/HSDPA
Node B
BSC/RNC
TDM/ATM
All-IP Backhauling CE 2007 Slide 29
thank you
for your attention
Issar Krausz
[email protected]
www.rad.com