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1
Mobile Backhaul WebinarMEF 22 Briefing for Operators
2
Jonathan OlssonEricsson, LTE Product ManagerMEF Technical editor of the MEF 22 mobile backhaul standard.
Rami YaronAxerra Networks, VP of Technology &
Business Development, AmericasMEF Ambassador to the Americas
Karim TraoreSymmetricomSenior Architect Clock Synchronization Expert
Carsten RossenhoevelEuropean Advanced Networking Test Center, Managing DirectorCo-Chair MEF Mobile Backhaul Group
Speakers
Peter CroyAviat NetworksSenior Network ArchitectCo-Chair MEF Mobile Backhaul Group
3
• MEF Introduction
• Mobile Backhaul – The Market View
• MEF specifications for Mobile Backhaul
• Use Case: Legacy Network Migration
• Phase 2: Preparing for LTE and Beyond
WebinarHost
Carsten RossenhoevelEuropean Advanced Networking Test Center, Managing DirectorCo-Chair MEF Mobile Backhaul Group
Today’s Webinar Agenda
4
MEF – Defining Body of Carrier Ethernet
Certification ProgramsEnabling Standardization
MEF Marketing CommitteeMarketing Carrier Ethernet
MEF Technical CommitteeSpecifications and Liaison
Mission: Accelerate the worldwide adoption of Carrier Ethernet networks and services
Membership: 170 Companies 68 Service Providers, Global Representation
5
Significant Market Developments
• Phenomenal growth in subscribers using mobile broadband services
• Mobile standards now deliver multi-megabit data rates to smart phones
• Packet Switched Networks promise scalable bandwidth at lower costs
• RAN must support multiple wireless generations
6
Source: Infonetics Research, 2010
0
10
20
30
40
50
60
CY05 CY06 CY07 CY08 CY09 CY10 CY11 CY12 CY13
Avg
BW
per
In
stal
led
Co
nn
ecti
on
(M
bp
s)
New Ethernet wireline PDH and ATM over PDH SONET/SDH and WDM
WW average bandwidth per installed connection (Mbps)
Mobile Backhaul Market Drivers
0
10
20
30
40TB
Oct-06 Jan-07 Apr-07 Jul-07 Oct-07 Jan-08 Apr-08 Jul-08 Oct-08 Jan-09 Apr-09 Jul-09
JRA 09.09.2009
0
10
20
30
40TB
Oct-06 Jan-07 Apr-07 Jul-07 Oct-07 Jan-08 Apr-08 Jul-08 Oct-08 Jan-09 Apr-09 Jul-09
JRA 09.09.2009
Live network KPI data
Operators: 9 Europe, 4 APAC, 6 Americas
Average Y-Y growth over 500%
Total HSDPA Traffic per Day
Source: Nokia Siemens Networks
Operators rolling out increased capacities via EDGE, EV-DO,
HSPA, WiMAX, then LTE
Bandwidth Per Connection
Copyright © 2009 Infonetics Research, Inc.
7
Costs Drive Operators to IP/Ethernet Backhaul
• Ethernet offers huge drop in cost per bit of bandwidth – Almost matches
the 2x to 10x traffic increases HSPA delivers
• IP/Ethernet naturally fit WiMAX and LTE as well
Source: Mobile Backhaul Equipment, Installed Base, and Services, October 2009
Bac
khau
l Ser
vice
Ch
arg
es p
er C
on
nec
tio
n
Copyright © 2009 Infonetics Research, Inc.
8
Operators Moving to IP/Ethernet backhaul
• From Infonetics Global service provider survey
• LTE is the final, absolute time to move to IP/Ethernet backhaul
Copyright © 2009 Infonetics Research, Inc.
9
Peter CroyAviat NetworksSenior Network ArchitectCo-Chair MEF Mobile Backhaul Group
MEF 22Mobile Backhaul Implementation
Agreement Phase I
10
Specifications For Mobile backhaul
MEF 6.1 = MEF 6, MEF 10.1 = MEF 10, MEF 1 = MEF 5. MEF 7.1 = MEF 7, MEF 10.2 = MEF 10.1.1 = MEF 10.1
April 2010
TS Technical SpecificationIA Implementation Agreement
Service Area Architecture Area Management Area Test and Measurement Area
MEF 6.1 Ethernet Services Definitions Phase 2 (TS)
MEF 2 Protection Framework and Requirements (TS)
MEF 7 EMS - NMS Information Model (TS) MEF 9 Abstract Test Suite for Ethernet Services at the UNI (TS)
MEF 3 Circuit Emulation Service Requirements (TS)
MEF 4 Carrier Ethernet Network Architecture Framework Part 1: Generic Framework (TS)
MEF 15 Requirements for Management of Carrier Ethernet Phase 1 – Network Elements (TS)
MEF 14 Abstract Test Suite for Traffic Management Phase 1 (TS)
MEF 8 Emulation of PDH over MENs (IA) MEF 11 UNI Framework and Requirements (TS)
MEF 16 Ethernet Local Management Interface E-LMI (TS)
MEF 18 Abstract Test Suite for CES over Ethernet (TS)
MEF 10.1 Ethernet Services Attributes Phase 2 (TS)
MEF 12 Carrier Ethernet Network Architecture Framework Part 2: Ethernet Services Layer (TS)
MEF 17 Service OAM Requirements and Framework (TS)
MEF 19 Abstract Test Suite for UNI Type 1 (TS)
MEF 22 Mobile Backhaul (IA) MEF 13 User Network Interface Type 1 (IA) MEF 7.1 EMS-NMS Information Model (TS) Phase 2
MEF 21 UNI Type 2 Test Suite (TS) Part 1 link OAM
MEF 23 Carrier Ethernet Class of Service (IA)
MEF 20 UNI Type 2 (IA) Service OAM Performance Management (IA)
MEF 24 UNI Type 2 Test Suite (TS) Part 2 E-LMI
MEF 10.1.1 Amendment:Attribute Enhancements
MEF 26 External NNI (ENNI) Phase 1 (TS) Service OAM Fault Management IA Phase 1
MEF 25 UNI Type 2 Test Suite (TS) Part 3 Service OAM
MEF 10.2 Ethernet Services Document Alignment
Ethernet Service Constructs (TS) Delivered Throughput (IA) Abstract Test Suite for ENNI (TS): Part 1 Basic ATS
Ethernet Services Amendment: New Bandwidth Profile
MEF 12 Network Architecture Framework Update
Service OAM MIB Abstract Test Suite for ENNI (TS): Part 3 Protection ATS
Mobile Backhaul (IA) Phase 2 ENNI Amendment: Support for UNI Tunnel Access and V-UNI
Abstract Test Suite for UNI Type 2 – Part 5, Enhanced UNI Attributes, and Part 6, L2CP Handling
Carrier Ethernet Class of Service (IA) Phase 2
Ethernet Services Layer Architecture Phase 2
OVC Service description NID Specification (TS)
OVC Service level Specification Protection across External Interfaces
Availability
11
MEF 22: Standardization Process
TDM to IP/Eth
Industry trends
Other SDOs
MEFs own work as the foundation
Standardizedreference
points
ServiceRequirements
(Service Types,CoS, Eth OAM, etc)
SynchronizationRecommendations
12
MEF 22: Overview
• MEF22 Explains how to apply existing MEF specifications to Mobile Backhaul
• Provides generic specification for Ethernet backhaul
• Includes guidelines to architecture, equipment & operation of the RAN
• Offers a standardized toolset
13
MEF Terminology and Concepts
• Network Elements as defined in MEF 22 Specification
Service requirements:• Connectivity - From a few to thousands of sites• Assurance - Capacity, quality and availability• Operations - Provisioning, SLA monitoring, fault-finding
GIWF Generic Inter-working Function
PCP Priority Code Point
PEC Packet based Equipment Clocks
PTP Precision Time Protocol
RAN Radio Access Network
RAN BS RAN Base Station
RAN CE RAN Customer Edge –Mobile network node/site
RAN NC RAN Network Controller –Single or multiple network elements
RNC Radio Network Controller
Terminology used in the specification and this overview
14
Service Requirements Addressed
• Bandwidth– Base station BW varies from site to site– Mbps to more than Gbps– Support hundreds to thousands of RAN BS sites per
RNC site
• MEF Services – Ethernet Private Line Service– Ethernet Virtual Private Line Service– Ethernet Private LAN Service– Ethernet Virtual Private LAN service– Ethernet Private Tree Service– Ethernet Virtual Private Tree Service
15
Legacy RAN Mobile Backhaul Migration
Emulation over Carrier Ethernet – Use Case 1b
Packet offload over Carrier Ethernet – Use Case 1a
16
Ethernet RAN Mobile Backhaul Migration
RAN dual stack – Use Case 2a
Full Ethernet – Use Case 2b
17
Karim TraoreSymmetricomSenior Architect Clock Synchronization Expert
Rami YaronAxerra Networks, VP of Technology &
Business Development, AmericasMEF Ambassador to the Americas
Legacy RAN Mobile Backhaul MigrationUse Case
18
Use Case Background
Challenges:– 2G transport– Service definition – Timing delivery– Service monitoring
Description:• 2G and 3G mobile FDD networks over TDM leased lines • 3G base stations support both TDM & Ethernet interfaces
Problem:• Capacity increase not cost-efficiently sustainable on legacy network
Solution:• 2G and 3G networks should transport Carrier Ethernet services
TDM Leased Line (1.5Mbps)
19
UNI for TDM-based Base Stations
• Generic Interworking Function (GIWF)– Adaptation and interconnection between legacy mobile equipment
at the BS/NC and the Carrier Ethernet network at the UNI– Enables backhaul of any combination of 2G/3G legacy and
Evolved-3G & 4G voice and data traffic over a single Carrier Ethernet RAN
– Implementation based on TDM circuit emulation standards as well as ATM/HDLC pseudo-wire standards
Carrier Ethernet Network
UNI-NUNI-C
Eth Access Link
EFT
GIWFRAN BS
Non-EthernetI/F
UNI-CUNI-N
Eth Access Link
EFT
GIWF RAN NC
Non-EthernetI/F
Ethernet I/F Ethernet I/F
EVC
20
2G(GIWF)
2G + 3G(GIWF)
2G + 3G(GIWF)
3G2G + 3G(GIWF)
Services for Emulated Circuits
EVPL_1
EVPL_2
EVPL_3
EVPL_4
UNI
Carrier EthernetNetwork
BSC
• The GIWF Provides support for legacy circuits over Ethernet• Assumption: Emulation solution requires the following:
– FD = 20ms, FDV = 4ms, FLR=10-5, Availability=99.999%– CIR = 2Mbps, EIR = 0Mbps (per emulated leased line)
• EVCs is defined with the same performance requirements• Bandwidth allocated depends on the number of leased lines
that are emulated, n. CIR = n * 2Mbps
GIWF
RNC
21
Services for 3G
EVPL_1
EVPL_2
EVPL_3
EVPL_4
UNI
Carrier EthernetNetwork
• 3G service utilizes the Node B Ethernet interface• Assumptions:
– 3G solution requires 3 CoS
– 3G, BWP for each RAN BS: CIR = 6Mbps, EIR = 4Mbps– Ingress BWP for RAN NC UNI: CIR = 24Mbps, EIR = 12Mbps
• E-LINE/E-LAN may be used as well
EVP-Tree
2G(GIWF)
2G + 3G(GIWF)
2G + 3G(GIWF)
3G
BSC RNC
2G + 3G(GIWF)
GIWF
22
CoS Configuration
Service Class Name
Example of Generic Traffic Classes mapping into CoS
4 CoS Model 3 CoS Model 2 CoS Model
Very High (H+) Synchronization - -
High (H) Conversational,Signaling and Control
Conversational and Synchronization,
Signaling and Control
Conversational and Synchronization,Signaling and Control,
Streaming
Medium (M) Streaming Streaming -
Low (L) Interactive and Background
Interactive and Background
Interactive and Background
Very High (H+) High (H) Medium (M) Low (L)
-
FD = 20msFDV=4msFLR=10-5
Availability=99.999%
FD=50msFDV=10msFLR=10-4
Availability=99.99%
FD=100msFDV=10msFLR=10-4
Availability=99.99%
Examples:
23
MEF 22 Approach to Synchronization
• MEF22 Approach to Synchronization– Packet based methods
(in scope Phase 1)• Synchronization
quality requirements
• The IA is agnostic to specific methods /implementations
– Synchronous Ethernet (in scope phase 2)
– Non Ethernet sync (outside IA scope)
Mobile Network Architecture
Frequency Sync
Time/Phase Sync
CDMA2000 GSM UMTS-FDD LTE-FDD UMTS-TDD LTE-FDD with MBMS-Single Freq. Network
LTE-TDD Mobile WiMAX TD-SCDMA
24
Delivering Packet Synchronization
• In-band: Within the mobile data stream– Use packet rate based adaptive clock recovery (ACR) – no additional
bandwidth is needed, must have constant packet rate (MEF8)
– Use CES RTP optional header for synchronization timestamps
• Out of band: Separate from the mobile data stream– For packet based synchronization methods like IEEE1588 and NTPv4
– Map synchronization information to separate EVPL or
– Map synchronization information to a different Class of Service (CoS)
Note: Not all sites use circuit emulation services
UNI
EVPLEVPLCoS Data
CoS Sync
UNI
EVPL_Sync
EVPL DataEVPL Data
UNI
EVPL Data & Sync
EVPL Data & Sync
Sync in separate EVPL Sync uses different Class of ServiceSync within the data EVPL
25
OAM in MBH Migration
• Ethernet OAM– Provides Ethernet
management
• Features– Connectivity Fault
Management
– Performance Management
– Link Management
• Deployment– Ethernet starts from Base
Station
– or legacy traffic “converged”
2G
T1/E1
T1/E1(TDM + ATM)
Ethernet
3G
LTE
EthernetCarrier
Ethernet
N x GigE
Ethernet
ATM
Ch-OC3 or T1/E1
BSC (2G)
RNC (3G)
NC (4G)
Cell Site MSC
Wireless Provider and Backhaul Operator each have visibility of their own Ethernet performance and fault data
Service ProviderRAN BS UNI RAN NC UNI
Wireless Provider Maintenance Entity
Operator Maintenance Entity
26
Jonathan OlssonEricsson, LTE Product ManagerMEF Technical editor of the MEF 22 mobile backhaul standard.
Preparing Ethernet Services for LTEMEF 22 - Phase 2
ApprovedSpecification
ApprovedDraft
LetterBallot
Working Document
StrawBallots
NewProject
27
Current Focus Areas
• LTE– Understand LTE and requirements for Ethernet services
• Synchronization– Frequency synchronization requirements and timing methods
• Resiliency– Discuss how resiliency applies to MBH Ethernet services
• Performance monitoring– What needs to be monitored, establish reference model
• Service performance– Common MBH Ethernet service performance recommendations
28
LTE Reference Architecture
• Basic principles in MEF 22 still apply!
• What’s new with LTE?– IP from the start– New logical interfaces– Multipoint in nature– New pooling concept– Greater throughput
29
Synchronization
• Focus – Achieving frequency
synchronization
• Synchronous Ethernet– Output requirements– New UNI attribute
• Packet based methods– align with ITU-T
recommendations
Synchronous Ethernet
Packet base methods
30
Resiliency
• Examining how resiliency requirements could be reflected.– At the UNI– For the EVC
• Looking at when it makes sense to use resiliency
RAN BS
RAN NC
UNIUNI
EVC 1(Primary Path)
EVC 2(Backup Path)
Leased component of the overall backhaul solution
31
Performance Recommendations and Monitoring
• Clearly specify between which points EVC performance objectives apply
• Provide a reference model illustrating where monitoring shall take place and what to monitor
EVC performance objectives
32
MEF 22 Scope Comparison
ITEM PHASE 1 PHASE 2UNI Service Types Link OAM Service OAM FM Service OAM PM CoS Performance recommendations Packet based sync SyncE Resiliency GSM, WCDMA, CDMA2000, WiMAX 802.16e
LTE
33
Summary
• RAN is going IP
• MEF 22 specifies a toolset for defining Carrier Ethernet services
• Carrier Ethernet provides solutions for wireless providers and backhaul operators
• MEF22 Phase 2 underway, preparing Ethernet services for LTE
WebinarHost
Carsten RossenhoevelEuropean Advanced Networking Test Center, Managing DirectorCo-Chair MEF Mobile Backhaul Group
34
Thank YouFor details on Carrier Ethernet for Mobile Backhaul visit: http://www.metroethernetforum.org/mobile-backhaul
Carsten RossenhoevelEuropean Advanced Networking Test Center, Managing DirectorCo-Chair MEF Mobile Backhaul Group
Peter CroyAviat NetworksSenior Network ArchitectCo-Chair MEF Mobile Backhaul Group
[email protected] [email protected]
Mobile Backhaul Working Group Chairs