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8/14/2019 MEF Mobile Backhaul for NXTcomm08 - Wed 06-17-2008 Final1
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Carrier Ethernet
for Mobile Backhaul
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Topics Carrier Ethernet for Mobile Backhaul
Current status and trends
Activating Carrier Ethernet for Mobile
Backhaul
Issues and Solutions for Mobile Backhaul
MEFs role in enabling Mobile Backhaul
infrastructure deployment
Questions from the Audience
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Panel Members
Eitan Schwartz
VP, Pseudowire and Ethernet AccessRAD Data Communications
Eitan_sc@rad.com
201-378-0311
Andrew SachsDirector of Solutions Strategy
JDSU
Andrew.sachs@jdsu.com
301-455-5277
Ioannis Kanellakopoulos, PhD
CTOActelis Networks
ioannis@actelis.com
Tel: +1-510-545-1035
Hossam SalibSVP Marketing/PLM
CO Founder, Aktino
Hossam.salib@aktino.com
949 258 0545 x226
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Carrier Ethernet
for Mobile BackhaulCurrent Status and Trends
Hossam SalibSVP Marketing/PLM
CO Founder, Aktino
Hossam.salib@aktino.com
949 258 0545 x226
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Mobile Backhaul Trends
Over 2.5 billion mobile phone users in
2006, growing to 3.6 billion in 2010 Growing dependence on mobile connection
Data and video mobility for all
Growing Data & Video more asymmetrical
Traffic grows exponentially,ARPU/revenue does notThe #1 driver for new backhaul technologies
Carrier Ethernet for backhaul
Ethernet microwave Wireline Ethernet copper, coax, fiber, DOCSIS,
DSL, PON
Source: Infonetics Research, 2008
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Mobile Backhaul Has Dynamic Growth
Symmetrical BW
required for existing
2G/3G traffic
Growing Data & Video
more asymmetrical
9/06 7/07
Movies, music, news, more
music, text, web, more content ..
Legacy TDM
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Industry trends
Demand for bandwidth will grow
disproportionately
more than
revenue for the
operator
The bandwidth increase will
primarily be on Best Effort data
user services, and driven by flat
fee business models
Search for technologies to
provide cheaper and more
effective ways to meet the
capacity grow at a lower CAPEX
and OPEX
Evolution towards Ethernet/IP
based mobile solutions
Revenues
Traffic
Gap between trafficGap between traffic
and revenue
increases
Gap between traffic
Data Dominant
Gap between
traffic and revenue
increases
Revenues
Traffic
Gap between trafficGap between traffic
and revenue
increases
Gap between traffic
Data Dominant
Gap between
traffic and revenue
increases
Voice Dominant
Source: Light Reading
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RAN Backhaul Bandwidth issues..
Mobile Cell Site Today
VZW 5 T-1s
Sprint 5 T-1s
AT&T 6 T-1s
T-Mo 2 T-1s
Today
Very Soon
Mobile Cell Site
VZW
Sprint
AT&T
T-Mo
VZW 60 Mhz = 120Mb
Sprint 140 Mhz = 280 Mb
AT&T/ Cingular 80 Mhz = 160Mb
T-Mo 50 Mhz = 100Mb
Total Average Cell SiteBandwidth utilization18+ T-1s or 27+ Meg
Today Spectrum is chopped upfor use in various inefficient
radio technologies. This limitsthe RAN backhaulrequirements.
New radio technologies get 2 bits per HzMore purchasable spectrum availableIncreased data demandGreatly increase RAN backhaul needs. 660 Meg potential
backhaul requirementsAND GROWING
As more Spectrum isauctioned off and radio
systems become moreefficient.
-100 meg or more per cellsites requirement will startin 2008-9
Spectrum and Mobile providerspotential
VZW 60 Mhz = 7.5 Mb
Sprint 140 Mhz = 7.5 Mb
AT&T/ Cingular 80 Mhz = 9 Mb
T-Mo 50 Mhz = 3 Mb
Older Radio Technologygets .5 to 1 bits per Htz and muchSpectrum is unused
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Carrier Ethernet
for Mobile BackhaulActivating Carrier Ethernet for Mobile
Backhaul
Andrew SachsDirector of Solutions Strategy
JDSU
Andrew.sachs@jdsu.com
301-455-5277
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What the Wireless Carriers are Thinking about
Migration to IP
WiMax & LTE are all IP CDMA is moving there rapidly UMTS 3G is moving to IP via ATM, Ethernet Radios
this year Cell Site equipment & Mobile applications being
designed forIP Circuit Emulation to sustain TDM infrastructure
Bandwidth Growth Need to plan for15 to 20 times
the growth of bandwidth and systems over the next 5
to 8 years. Mobile operators are looking to Lower Costs
Broadband costs less per bit than T1 Reduce the amount of systems -- simplify
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Worldwide Mobile 1st Mile Backhaul Service Charges perConnection:
PDH and ATM over PDH vs New Wireline
$37,044
$6,887
$0
$10,000
$20,000
$30,000
$40,000
CY05 CY06 CY07 CY08 CY09 CY10
Calendar Year
Revenue
PDH and ATM over PDH
New wireline
Ethernet Options Solve Backhaul Cost Problem
PDH (T1/E1 etc.) costsclimb directly with
bandwidth
Ethernet wireline costs
grow gently with large
bandwidth increases(Eth, DSL, PON, cable)
New IP/Ethernet
wireline options to
satisfy the the #1
investment driver:operational cost
savings
Source: Infonetics Research Mobile Backhaul Equipment, Installed Base, and Services, 2007
Stay on PDH
Ethernet
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Mobile Backhaul Options
GigE
EoSONET/SDH
10/100BT
100BT
100BT
WDM
100BT
EoT1/DS3
1000BT
GBE
Direct
Fiber EoDO
CSIS
Leased
Ethernet
LeasedT1/D
S3PON
RAN
NC
ADM
Service
Provider
Network
Mobile backhaul Ethernet can be delivered over a
variety of access technologies
nxT1
Radio
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Progression to an All-Packet Network
2G/2.5G 2G/2.5G TDMTDMGSM/GPRS, TDMA, CDMAGSM/GPRS, TDMA, CDMA
3G/4G 3G/4G Ethernet/IPEthernet/IPUMTS rev. 5&6, CDMA 1X EV-DO,UMTS rev. 5&6, CDMA 1X EV-DO,
WiMax, UTRAN LTEWiMax, UTRAN LTE
Base Station Interfaces
3G 3G ATMATM
UMTS Rel. 99UMTS Rel. 99
Backhaul
Infrastructure
ATMATM
Ethernet/Ethernet/
IP/MPLSIP/MPLS
PDHPDH
SDHSDH
Benefits: Scalable bandwidth, OpEx savings with fast ROI, future proof architecture
Challenge: Precise timing over asynchronous packet networks, OAM, availability ofhigh speed links (fiber)
Ch ll d R i t
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Challenges and RequirementsTransport Providers and Mobile Operators
Transport providers are trying to:
Support multiple operators at the same tower
Accurately and independently regenerate timing per mobile
operator
Deliver quality service (low latency, jitter and packet loss) Support variety of cellular protocols with TDM, ATM and
Ethernet interfaces
Provide diagnostic tools to operator, such as in-band facility
loopbacks Find hardened units for use in compact outdoor cabinets
Ch ll d R i t
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Challenges and RequirementsTransport Providers and Mobile Operators
Mobile operators are looking for flexible equipment
that can:
Take advantage of the lowest cost, highest bandwidth
access networks
Optimize usage of access links with intelligentoversubscription, idle flag suppression, Abis optimization,
DBA, per VC switching, etc.
Detect faults and network degradation (excessive latency,
jitter, etc.) Monitor performance to ensure SLA guarantees are met
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Carrier Ethernet
for Mobile BackhaulIssues and Solutions for Mobile
Backhaul
Eitan SchwartzVP, Pseudowire and Ethernet Access
RAD Data Communications
Eitan_sc@rad.com
201-378-0311
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Mobile issues SLAs and PM
Service performance and SLAs
Delay, delay variation and timing are key for Mobile backhaul
Metro Ethernet Forum (MEF)
Recommended key parameters for SLAs MEF 10.1
Service availability, frames lost, frame delay, frame delay variation
Defined the what, not the how
RFC-2819 - RMON Etherstats
Monitoring of local performance (eg node or LAN)
Y.1731/802.1ag
Focused on end to end service (WAN)
Includes both monitoring and test
Frame delay, frame delay variation, frame loss ratio
Diagnostics
Ethernet Frame loss, latency & throughput using RFC-2544 and MAC swaploopbacks
Circuit Emulation using ANSI T1 403 inband facility loopbacks
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Circuit Emulation / Pseudowire technology enables legacy migration to
packet-switched networks (IP, Ethernet, and MPLS).
MEF-8: IA for the Emulation of PDH Circuits over Carrier Ethernet
MEF-18: Abstract Test Suite for Circuit Emulation Services
Pseudowire challenges:
Packetization and Encapsulation of TDM Traffic
Attenuate Packet Delay Variation (PDV or Jitter) Compensate for Frame Loss and Out-of-Sequence Packets
Recover Clock and Synchronization
PWE3 #1
PWE3 #2
Pseudowire
Enabled EDD
TDM, ATM
FR, etc.
Legacy
Service
Pseudowire
Legacy Emulated Service
Legacy
Service
Tunnel
DSLAM
BTS
PBX
BSC/RNC
PBX
BRAS
TDM, ATMFR, etc.
Support for Legacy Services over Ethernet
Carrier EthernetPseudowire
Enabled EDD
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Synchronization Over Packet Switched Networks
2G/2.5G/3G require accurate frequency reference:
GSM (50ppb), UMTS (16ppb) CDMA (uses GPS receivers)
Ideally holdover of 16 ppb 1 ppb of aging per day
Recovered clock at the cell site should conform to ITU-TG.823/G.824 Sync interface using G.8261-defined scenarios
Multiple Timing Domains
System timing with master and fallback sources
Packet
Switched
Network
3G Node B
2G BTS
IMA or OC-3/STM-1
E1/T1 TDM
FE
3G RNC
2G BSCGbE
Synchronization InformationG.823/824
Compliant Clock
Primary Reference
Clock (PRC)
OC-3/STM-1
Ch.OC-3 /DS3
Ch. STM-1
PWE3PWE3
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Mobile Backhaul Synchronization over Ethernet
Cellular base stations of any generation (2G, 2.5G and3G) require a highly accurate frequency reference
The possibility of deriving transmission frequencies from this reference
Lengthy synchronization procedures between cells (for hand-off) when their
clocks are not sufficiently similar
CDMA over Ethernet From a timing point of view, this is relatively straightforward since CDMA uses
GPS receivers at each cell site
Therefore each base station is effectively self synchronizing with masterclocks in the GPS Satellite network
GSM, W-CDMA and UMTS over Ethernet
Base stations rely on a recovered clock from the T1/E1 leased line ormicrowave link to which they are connected
50 parts per billion of frequency error is required to support the GSM handoffmechanism as mobile stations wander from one cell to the other.
With UMTS, the clock should have frequency stability of less than 16 ppb
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Primary Synchronization Methods
Adaptive Clock is distributed over the PSN as TDM stream and is adaptively
recovered solely using time-of-arrival information The format of the clock stream is a standard PWE3 flow, so
interoperability with 3rd party vendors is simplified
Independent of the physical layer
IEEE 1588v2 Time and frequency distribution protocol based on time-stamp
information exchange (similar to NTP)
If the PSN network elements do not support 1588, then 1588 andadaptive deliver the same frequency recovery performance
Note that 1588 is just the packet format; what is critical is the clock
recovery algorithm, which is not standardized ITU G.8261 (Synchronous Ethernet)
Uses the physical layer of Ethernet for accurate frequency distribution
Unaffected by network impairments (e.g., PDV, Packet-loss, etc.)
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Reduce transport costs by migrating 2G/2.5G, 3G and 4G
to scalable, lower cost, higher bandwidth Ethernet
Carrier Ethernet can provide Mobile Backhaul
Mobile Core Network Radio Access Network
Pseudowire
2G/3G/xG
Base StationsAggregation
Traffic
Optimization
TDM/ATM/IP
Backbone
MSC
MSC
Voice
Trunking
MSC
Carrier
Ethernet
BSC
RNC
Wireless
Intelligent
Demarcation
Node-B
/ BTS/
WiMAX
Node-B
/ BTS/
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4G
Example: WiMAX Backhaul over Ethernet with QoS
Ethernet
/ MPLS
PE
Transport Network
3
rd
Party Transport Provider
CESR
OAM
Edge-to-end
FE /
GbE
WiMAX
Aggregator
NMS
Test
Head
WSC
BS
HUB
Traffic Classification, Policing, Scheduling, Shaping OAM for non-intrusive monitoring of Connection (CFM) and Performance (PM)
MAC swap loopbacks for diagnostics tests and performance monitoring Hub locations: Oversubscription and shaping to 3rd party networks CIR/EIR
BS
Remote
Cell Site BS
Remote
Cell Site
BS
Remote
Cell Site
BS
HUB
Segment 1
Segment 2
Segment 3
SLA monitoring and diagnostics
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Carrier Ethernetfor Mobile Backhaul
MEFs role in enabling Mobile Backhaul
infrastructure deployment
Ioannis Kanellakopoulos, PhDCTO
Actelis Networks
ioannis@actelis.com
Tel: +1-510-545-1035
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Mobile Backhaul Implementation Agreement
MEF Mobile Backhaul Standardized services
Certification
Interoperability UNI Requirements
Ethernet OAM (Link OAMand Service OAM)
Protection and FaultRecovery Requirements
Service Requirements CoS Requirements
Service Definitions
Synchronization
RAN / BSC
BTS/NodeB
BTS/NodeB
Carrier Ethernet
Network
UNI
UNI
UNIEVC
The structure of the document provides generic guidelines
for several mobile technologies specific guidelines for a
given mobile technology may also be specified
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Legacy
Todays Mobile Backhaul MEF Use Cases
Legacy Transport
Legacy RAN Legacy RAN
The Implementation Agreement identifies four generic
deployment scenarios that capture the main short termand long term deployment possibilities
Legacy = non-packet RAN and non-packet transport
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Packet offload over carrier Ethernet 1a
Overlay MEN does bandwidth offloading onto Ethernetservices
Legacy network continues to transport voice and deliver
timing
Legacy Network
Carrier Ethernet NetworkGeneric
Interworking
Function
Generic
Interworking
Function
UNI UNI
RAN BTS
RAN NC
Legacy
C
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Emulation over Carrier Ethernet 1b
Carrier Ethernet NetworkGeneric
InterworkingFunction
Generic
InterworkingFunction
UNI UNI
RAN nodes with legacy interfaces transport all trafficover Ethernet services using emulation technologies
RAN BTS
RAN NC
Legacy
RAN d l k 2
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RAN dual stack 2a
Legacy Network
UNI UNI
RAN nodes are equipped with Ethernet and legacyinterfaces
Overlay legacy network transport voice and delivers
sync; MEN is used for BW offloading
RAN BTS
RAN NC
Legacy
Eth/IP
Carrier Ethernet Network
F ll Eth t BTS d T t N t k 2b
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Full Ethernet BTS and Transport Network 2b
UNI UNI
New RAN nodes with native Ethernet interfaces All traffic is transported over Ethernet services
RAN BTS
RAN NC
Eth/IP
Carrier Ethernet Network
Separation of Voice and HSPA Data over Ethernet / IP
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Separation of Voice and HSPA Data over Ethernet / IPUse case 1ab and 2ab example
TDM or ATM
Backhaul
N*E1 ATM/IMA
or STM1/VC4
Node B / BTS Ethernet/IP/MPLS/PWEBackhaul
T1/E1/ orATM
Aggregation
FE / GE
Aggregation
Cell Site
FE/GE
Ethernet / MPLS
All-IP
RNC/BSC
RNC/BSC
FE / GE
Aggregation
N*T1/E1 ATM/IMA
or STM1/VC4
N*T1/E1TDM
Node B / BTS
Node B / BTS
ATM PW Trunk
TDM PW Trunk
Ethernet PW Trunk
Node B / BTS
FE / GE
Data
Voice
Pico/Femto
Wi-Max
DSL/GPON
Ethernet
Use Case 1a
Use Case 1b
Use Case 2a/b same as 1a/b except
BTS/NodeB have Ethernet Interfaces
MEF 18 C tifi ti f M bil B kh l CES
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MEF 18 Certification for Mobile Backhaul CES
MEF 18 provides standard testing of Circuit Emulation
Services over Ethernet Speeds implementation and enables full inter-operability
334 ground breaking tests and certifications in the suite
MEF 18 has many applications but is key to Mobile BackhaulMobile Backhaulmigration strategiesmigration strategies
Lead by strong service provider demand
Industry first impairment testing brings first test ofemulation of clock recovery
Raise the level of confidence that clock recovery will
meet the stringent requirements of mobile backhaul.
Cl i
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Closing
Carrier Ethernet is in demand for Mobile
Backhaul
There are Ethernet deployment options for all
mobile backhaul situations
Carrier Ethernet technology is rising to meet thestringent technical and operational requirements
of Mobile Backhaul
The MEF is working in conjunction with other
standards organizations to ensure that scalable
solutions are available
P l M b Q&A
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Panel Members Q&A
Eitan Schwartz
VP, Pseudowire and Ethernet AccessRAD Data Communications
Eitan_sc@rad.com
201-378-0311
Andrew SachsDirector of Solutions Strategy
JDSU
Andrew.sachs@jdsu.com
301-455-5277
Ioannis Kanellakopoulos, PhD
CTOActelis Networks
ioannis@actelis.com
Tel: +1-510-545-1035
Hossam SalibSVP Marketing/PLM
CO Founder, Aktino
Hossam.salib@aktino.com
949 258 0545 x226
http://www.rad.com/http://www.jdsu.com/index.html8/14/2019 MEF Mobile Backhaul for NXTcomm08 - Wed 06-17-2008 Final1
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Thank You
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