Mobile Backhaul

Transcription

Mobile Backhaul

Mobile Backhaul
Responding to 4G EoF RFIs
Kurt Raaflaub
Carrier Ethernet and Optical
Product Management
September 28/29, 2011
Agenda
 Why 100M to the cell site?
 New backhaul requirements
 SLA Management & Y.1731
 Clock Recovery over Ethernet
 Mobile Backhaul Topologies
 ADTRAN Ethernet Access Gateway
 Summary
® Adtran, Inc. 2010 All rights reserved
2
Mobile Broadband is here
10X bandwidth w/o corresponding profit
 Mobile TV is here
– i.TV 2.0 for iPhone coming
soon
– Enjoy full NBC videos on
your iPhone
– CBS releases TV.com
iPhone app
– Hulu coming to the iPhone?
TV program
watched on
Smart Phone
 4G technology being
deployed
– Rivals Wireline Broadband
speeds
– VzW deploying LTE
– Sprint/Clearwire WiMAX
– All WSP have 4G plans for
2010-2013
Evolution from 2G  3G  4G
3
LTE and corresponding EPC
all-IP, simplified network architecture
Broadband Forum focus
areas for backhaul
2G/3G
GMSC
CDMA / EVDO
GSM / GPRS
Voice
EDGE
Channels
UMTS
IP channel
BTS
BSC / RNC
Node B
PSTN
Other
mobile
networks
MSC
Internet
Packet Switched
Core
SGSN
PDSN
LTE+EPC
MGW
Circuit Switched
Core (Voice)
HSPA
What is EPC ?
Softswitch
GGSN
HA
VPN
New, all-IP mobile core network introduced with LTE
 End-to-end IP
 Clear delineation of control plane and data plane
 Simplified architecture: flat-IP architecture with a single core
Evolved Packet Core
IP channel
eNode B
(eNB)
Transport (backhaul
and backbone)
(All-IP)
Evolved Packet Core = end-to-end IP transformation of mobile core
4
Mobile Backhaul Convergence
Clock Sync over Packet; CoS Considerations
Service
Cell Site
Access & Aggregation
Central Office
Mobile Core
2G, 3G Voice
Clock Sync
MUX
PSTN
TDM/SONET
2G
DCS
EAG/NTE
3G
Internet
4G
Ethernet
Backhaul
Aggregation
2G, 3G
Voice
CSR
(IWF)
PSTN
DCS
2G
3G
2G, 3G Voice
Clock Sync
GigE
Internet
4G
Ethernet
EAG/NTE
2G, 3G, 4G
Data
Backhaul
Aggregation
2G, 3G, 4G
Data
5
Mobile Backhaul Convergence
Clock Sync over Packet; CoS Considerations
Service
Cell Site
Access & Aggregation
Central Office
Mobile Core
2G, 3G Voice
Clock Sync
MUX
PSTN
TDM/SONET
2G
DCS
EAG/NTE
3G
Internet
4G
Ethernet
Backhaul
Aggregation
2G, 3G, 4G
Data
2G, 3G
Voice
PSTN
2G
2G, 3G
Voice
DCS
2G, 3G Voice
Clock Sync
3G
4G
Internet
2G, 3G, 4G
Data
Ethernet
EAG/NTE
(IWF)
Backhaul
Aggregation
6
Verizon Wireless Case Study
Fiber to the Cell Site RFI for LTE Readiness
 Interfaces





Two 1000Base (GigE fiber)
Two 100BaseFX (fiber),
Two 100BaseTX (copper)
(4) 100BaseTX (FE) ports
(4) Extra 100BaseTX (FE) ports or
100/1000Base fiber ports
 Option to add an additional (8) FE
copper ports
 Scale
 Ability to scale bandwidth from a
single pair of GigE links to 10GigE
link pairs or more as 4G equipment
is rolled out
 Ability to scale bandwidth from
10Mbps to 300Mbps+ per cell site
 Power
 -48VDC, A/B feeds+24VDC, or as a
possible option (-48VDC)
 A and B Power Feeds
 SLA Mgmt


•
•

•
Max 1-way delay
5ms
Max Jitter
+/- 1ms
BER
<1E10-9
FER
<1E10-6
IEEE 802.1ag Fault Management
ITU-T Y.1731 Performance
Monitoring (1Q,2011)
 QoS/Reliability
 Prioritize traffic based on L2 802.1p
markings. Voice and video traffic to
receive appropriate priority.
 2000byte MTU Support
 Although a redundant path into the
cell site is not required, it may be
necessary to meet Availability
requirements
 Electrical isolation to protect against
transients from entering/leaving cell
site.
Summary: 50 -100Mbps of fiber-based Carrier Ethernet service via
SFP interface to their Cell site Router. No Clock, No TDM
8
Segmenting Ethernet Services
Premium vs. Mass Market Services
Service
Attributes
Legacy
Access
(Tariffs)
Next-Gen
Access
(Tariffs)
Fiber
Topology
(Rel.Cost)
Service
Assurance
ATM
FR
Carrier
Ethernet
Dedicated
P2P
SONET
100M ($2k+)
100M – 10G
OC-3 ($5k+)
1G ($5k+)
SME
Repeatable
FR
K-12
Flexibility
TDM
carrier
Ethernet
Medical
Low Cost
T1(~$500)
100M ($1k+)
Gov’mt
<10M – 1G
Targeted
Vertical
Mobile
Backhaul
Premium
Ethernet
Services
Financial
Utilities
Wholesale
Universities
Mass Market
Ethernet
Services
Security
High QoS
- Strong SLAs Drive the Delta
(High)
Ring
(Med)
Shared e.g.
MDU
(Low)
<10M (<$1k)
Pricing Source: VSG
9
SLA Management
ITU-T Y/1731 Performance Monitoring
Shared resources – cheaper, trickier
Circuit-based  Packet-based service
-TDM/SONET  IP/Ethernet
- SLAs are in High Demand  Protect your Revenue
- OAM tools + Performance Monitoring  Solution
11
Ethernet traffic management
Delivering Low Latency, Jitter
EVC2
EVC1
EIR
EVC3
Meet Customer Expectations  Get Paid
12
Service Level Agreements
Managing your customers’ expectations
 Voice services sound clear
 Video looks great,
– no pixilation, buffering
 Critical data is not
dropped, or re-transmitted.
 Issues are resolved quickly
and easily.
13
SLAs need Performance Monitoring
 Typical Definition of SLA
considerations
•
•
•
•
•
•
•
•
Frame Delay (Latency)
Frame Delay Variation (Jitter)
Frame Loss Ratio
Throughput
Long-term availability (99.99x %)
Switchover/recovery options
Protection options (N+0, N+1, 2N)
Installation/Upgrade interval
14
ADTRAN Ethernet OAM
Performance
Management
Connectivity Fault
Management (CFM)
Supporting Ethernet SLAs
IEEE 802.1ag
ITU-T Y.1731
Detection


Notification


Verification


Isolation


IETF TWAMP
ITU-T Y.1731
Delay


Jitter


Loss


Multiple paths for both Fault & Performance Management
15
Ethernet OAM tools
!
!
17
Viewing Performance Monitoring Data
=
18
Service Level Agreement Requirements
Table 2: SLA requirements for Mobile Networks (error limits)
SLA attribute
MUST support
SHOULD support
5
<5
+/- 1
+/- 1
1-way Latency (ms)
Jitter (ms)
BER & FER
10-9
&
10-6
10-11 & 10-7
99.99
99.999
MTTR (Hrs)
4
2
Failover (ms)
50(150 for Voice)
50
Availability (%)
19
Making Sense of the Data
20
Viewing Performance Monitoring Data
Alarming and Trending EG Delay
 Configurable Threshold Alarms
– On a per SLA attribute basis
 Configurable Trending
– ToD, Month-to-Date
– Compare different sites side-by-side
Major Alarming
One-Way
Frame Delay
Informational Alarming
Delay
(ms)
4.0
Configurable Alarm
Thresholds
3.0
Minor Alarming
2.0
Time of Day
(Month to Date)
21
Proactive Network Management
Mining AND Presenting Network Data
 Network information coming from multiple sources to
assess status of SLA.
 Effective and Efficient performance measurements is
required
– Collection, Analysis and Presentation
22
Clock Sync over Packet
Supporting ITU-T Synchronous Ethernet and IEEE
1588v2 PTP
Clock Delivery Mechanisms
NTP over DS1, SyncE over EoF, GPS
 Sprint and Verizon (CDMA operators) will leverage existing GPS
receivers at every cell site until such time new site are required in
2012-2015.
 ITU-T G.8261/8262 (SyncE) requires every node participate in timing
recovery and distribution and has huge CapEx implications.
– 1588v2 is more forgiving.
Table 1: Sync Solutions in Mobile Networks
Mobile Operator
Technology
AT&T
T-Mobile
Verizon Wireless
Sprint
Frequency
Phase/ToD
GSM, WCDMA,
HSPA
Future: LTE
Now: TDM or SONET
Now: TDM or SONET
Future: SyncE
Future: 1588v2
CDMA2000 1x,
1xEV-DO
Future: LTE (VzW)
WiMAX (Sprint)
Now: TDM or SONET
Now: GPS
Future: MPLS PW or
SyncE
Future: 1588v2 and GPS
24
Key: Not Breaking the Sync Chain
Consideration of Migrating Sync Standards
Timing Standard
SONET/SDH/PDH
Adaptive/Differential
Entire Path is Sync
Aware it delivers…
Frequency
Frequency
Synchronous Ethernet Frequency
GPS/Satellite
Frequency
Phase
1588v2
Time-of-Day
Frequency
Phase
Time-of-Day
Implication of nonSync-aware node
Sync Path Broken
Not dependent on full
NE awareness to pass
sync
Sync Path Broken
Not dependent on full
NE awareness to pass
sync
Dependent upon
number of ‘unaware
hops’ and network
loading
25
Good Synchronization
Critical to Mobile Networks
NobeB
NodeB
Mobile Core
1: Radio Framing
Accuracy
eNB or
BTS
2 : Handoff
Control
eNB or
BTS
3 : Backhaul
Transport Reliability
 Synchronization is vital across many elements in the mobile
network
 In the Radio Access Network (RAN), the need is focused in
three principal areas
26
Ethernet Network Timing Distribution (1)
TDM  SyncE Based Distribution in the Core
Secondary
Reference
Source
Primary
Reference
Source
• Frequency
• Phase
• Time-of-Day
GPS
Traceability
Ethernet Network
Synchronous
Ethernet
SONET/SDH
or T1/E1
T1/E1
• Frequency
27
TDM  SyncE Based Distribution in the Access
Secondary
1588v2
Grand Master
Primary
Reference
Source
• Frequency
• Phase
• Time-of-Day
GPS
Traceability
Ethernet Network
SyncE
SyncE
SyncE or
T1/E1(CE)
• Frequency
28
GPS/Satellite  1588v2 for Phase and ToD
1588v2
Grand
Master
1588v2
Grand Master
Traceability
Ethernet Network
1588v2 +
SyncE
1588v2 +
1588v2
SyncE • Frequency
• Phase
• Time-of-Day
29
PRC traceability w/o T1 access
Supporting Frequency Reference via SyncE
 Stratum level Frequency Input
unchanged
PRC
– BITS clock input on TA5000
Switch Module
Access Module
Switch Module
Primary
Reference Clock
(BITS input)
Total Access 5000
Ethernet Aggregation
GigE Access Module
locked to 8KHz Clock
via Backplane
SyncE Frequency
 Clock distributed across
Backplane
– 8kHz signal from SM to GigE
Access Module(s) preserves
source quality
 GigE Module converts Clock to
SyncE standard
GigE
NetVanta 8044M
EoF NTE
– Traceability at the PHY layer to
the PRC
 Distributes SyncE signal out to
NTE
GigE
PRC signal
Recovered
WSP Cell site
– NetVanta 8044M recovers
SyncE signal
– Stratum 3e holdover support in
the event of signal disruption
30
Access Solutions for Mobile
Backhaul
Point to Point and ERPS Ring Topologies.
Scalability of Fiber Ethernet
TA5000 MSAP
Central Office/
Exchange
Carrier
Ethernet
Network
8 port
EoFiber
AM
 Ethernet over Fiber
– Reliability of fiber
– Highly scalable access
– 8 point to point access lines
per module
– TDM support via Circuit
Emulation Services (CES)
– Secure endpoints
32
Resiliency of Fiber Ethernet
 Ethernet over ERPS
TA5000 MSAP
Central Office/
Exchange
Carrier
Ethernet
Network
8 port
8 port
EoFiber
EoFiber
AM
AM
– Differentiated Ethernet
service offering
– Eight rings per access
module pair
– TDM support via Circuit
Emulation Services (CES)
1 or 2.5 Gbps ERPS Ring
33
NetVanta 8044M Optical Bypass
Saving Truck-rolls; Preserving SLAs
East Ring
West Ring
Bypass Disabled
5VDC Power ON
East Ring
West Ring
Bypass Enabled
X
5VDC Power LOSS
34
ADTRAN ERPS vs. Typical Rings
Added Resiliency against Power Failure
 Pseudo-Ring ‘Break’ at Predetermined location. X
Normal
Site A - C Data Path
 Upon Site B Failure, Actual
Ring Break identified and
moved to new location. X
X
Site B
Site C
Site D
X
 Upon Site B Failure, Bypass
Activated beating EPRS
timer.
Site B
 Site B ‘removed’ from Ring.
 No switch-over, Ring
Site A
remains in Resilient condition
Failure/ ByPass
Site B
Site D
Site C
Site D
X
Site A
 Pseudo-Ring ‘Break’ at PreNormal
determined location. X
Site B
Site A
 50ms Switch-over invoked.
 Ring remains in nonresilient condition
Failure/Switch-Over
Site C
X
Site D
Site A
Site C
X
35
Redundant Hardware/Facilities
Link Aggregation Control Protocol (LACP)
 Full Protection
–
–
–
–
1000BaseX
LACP
SM Redundancy
AM Redundancy
Facilities Redundancy
Service Redundancy
Optional 10G SM
Typical 1G SM2 used
10G
SM
8p EoF AM
SM5 10G
Dual Path
DualPath
GigE
AM
Total Access 5000
1000BaseX
LACP
Optionally Redundant Access Module (AM)
Optionally Redundant Switch Module (SM)
LACP
NetVanta 8044M
36
Mobile Backhaul Application
Ethernet & TDM service access rings
From
Up Stream
2.5Gbps
ERPS Ring
Drop Customer
Ethernet
Service
Drop
Customer
TDM 1- 8
DS1/E1
Service
Up to 16 Nodes Ethernet
Ethernet
Ethernet
1- 16 x DS1/E1
Continue
Down Stream
Remainder of
2.5Gbps ERPS
Ring Capacity
1-16 x DS1/E1
1-16 x DS1/E1
2.5Gbps ERPS Ring
37
Fiber to the Tower
WSP #1
MTSO
ILEC
Central
Office
2 -10G Links
WSP #2
MTSO
WSP #3
MTSO
2 -10G Links
2 -10G Links
Carrier
Ethernet
Network
8 port
8 port
EoFiber
EoFiber
AM
AM
 Each WSP is asking for:
 2 – 1G Hand-offs at the Cell Site (each
carrying up to 150 Mbps of traffic). Each
hand-offs is tagged with its own VLAN
 2 – 10G Hand-offs at the MTSO, with the
traffic from all cell sites aggregated and
divided by VLAN
Therefore, 1 device in the CO will be
aggregating the traffic from all
WSP’s. It will either have to support
multiple 10G uplinks, or it will switch
all traffic into a switch that can
support multiple 10G uplinks.
Collapsed ERPS
Ring
Patch
Pedestal
2 -1G Links
8xDS1
10/100/1000
8xDS1
10/100/1000
Cell
Site
2 -1G Links
Cell
Site
38
Ethernet Access Gateway
NetVanta 8044M Cell site Gateway
Ethernet over Fiber Components
8-port Gigabit Ethernet Access Module (April 2010)
– 8 GigE SFP cages
– Link Aggregation (Planned Phase II)
– Link OAM
NetVanta 8044 Ethernet over Fiber NTE (April 2010)
– 4 -10/100/1000BaseT WAN or LAN
– 4 - GigE SFP WAN or LAN
– AC powered
NetVanta 8044M Modular EoF NTE (July 2010)
– 4 - GigE SFP WAN or LAN
– 2 – Expansion Slots for Circuit Emulation Services (CES)
and/or EoCu and/or GPON Access
– 2.5G ERPS Ring support with optical bypass option.
– Clock Sync over Packet Ready
– AC and Dual feed DC options
40
Growth Path to 10GE Access
NetVanta 8444M Base Chassis
–
–
–
–
–
4 -10/100/1000BaseT WAN or LAN
4 - GigE SFP WAN or LAN
2 – 10GigE XFP WAN or LAN
2 – 10GigE SFP+ WAN or LAN
1 - Expansion Slot
NetVanta 8444M Expansion Modules
– 8 - GigE SFP WAN
– Any NetVanta 8044M Expansion Modules
41
A Cell site is not a Wiring Closet
Flexible mounting/powering options
 In BTS or eNB enclosures
– Single RMU in size
 In CO or Street Cabinet
– NEBS, IEC compliance
 In uncontrolled environments
– Temperature hardened
 Near Tower
– Surge protected/isolated interfaces
especially for Ground Potential Rise
e.g. cell site is a lightning rod
LTE eNB
 No space, rack or GR-487 cabinet
– Rack as well as wall mounting
options
– OSP options
OSP EAD
 +24V & -48VDC powering options
– Resilient, Dual feed powering
42
ADTRAN Carrier Ethernet
Meeting your Growing Bandwidth needs
• High Performance Aggregation
– Scalability: Gigabit services ready
• Subrate, 1Gbps, 10Gbps Interfaces
• Switch fabric up to 145Gbps
– Fault Tolerance:
• Switching fabric redundancy
• Access resiliency
• Unmatched Flexibility in Access
– 100% Service coverage:
 On or Off-net;
 SMB or Mobile Backhaul
• Ethernet over Copper, over TDM, over Fiber
• Quality Assurance
– Fully support rigid SLAs
 Full suite of Connectivity Fault Management and Performance Monitoring
 Packet-based Clock Recovery to support Mobile Backhaul Convergence
– Prioritize Premium Business Services over Best Effort Services
 Robust and Flexible Traffic Management
• Simplified Operations
– Leveraging Intellectual Capital
 Reuse of TDM and Business Services personnel and processes
– Common One-touch Provisioning model - Just plug it in
 Single Platform, Common Operational Model for all Ethernet over X solutions
 Flow-through Auto-provisioning
43

Mobile Backhaul

Transcription

Similar documents

RoomWizard® II Scheduling System Technical Specifications

Total Access EMS Data Sheet

MX2820 High-Density M13 Multiplexer

Advancing Cloud Connectivity â Expanding Data Services

csi global connect-internet remote access

the FlightLite 100 data sheet

LumiGrow® SmartPAR™ Light Management Service

ES14-OTDR

CAMC203EN-TRS-V-PR-GB-0000 - TR

ioSelect 900Mhz Wireless Ethernet Bridge Pair

HandPunch 1000E brochure - Enterprise Time Recording