LTE Mobile Backhaul Solution LTE Mobile Backhaul Solution
ZTE Bearer Network Product Line
Qian Peng
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� ZTE IPTN Highlights� ZTE IPTN Highlights
CAPEX
Higher
Bandwidth
Security
LTE Mobile Backhaul Requirements
Higher QoS &
Reliability
3
CAPEX
& OPEX
Network
Management
Simplification
Network Scalability
& eNB/Backhaul sharing
Clock &
Phase Synchronization
Higher QoS & Reliability
S1-MME
S1-MMES1-MME
S1-MME
X
S1-U
S1-U
S1-U
S1-U
4
•E2E two-way delay: 10 ms or even 5 ms guaranteed
•QoE requirement for real-time services: Interruption time 50ms - 250ms
•aGW switching time: 50ms - 250ms
X2
S1 & X2 Bandwidth
� S1 Interface:
� 2*2 MIMO,64QAM, 20MHz FDD
Bandwidth,User data Peak cell DL
rate :144Mb/s
� 3 sectors user data Peak cell DL
rate: 3*144Mb/s
AGW
5 core Nodes
8 Aggregation Nodes
40Gbps for S1800 eNB’s
200Gbps for S14000 eNB’s
5
� S1 control data: much lower than
user data
� X2 data rate: Typical less than 5% of
user data
� NM data rate: Typical less than
512kbps4000 eNB’s …e-NB e-NB …e-NB e-NB
…
10 access rings
8 Aggregation Nodes for each aggregation ring
10 nodes per ring
Maximum:200G for S1, 10Gbps for X2 Total
5Gbps for S1100 eNB’s
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� ZTE IPTN Highlights� ZTE IPTN Highlights
Proposed Solutions for LTE Transport
Option1: MPLS/MPLS-TP (E-Line)
+ L3 VPN Gateway
Option2: E-LAN + MPLS L3 VPN
Forwarding
Plane for S1
Interface
VLAN + MAC
& MPLS& MPLS-TP
VLAN + MAC
& MPLS & MPLS-TP
Forwarding
Plane
VLAN + MAC
& L3& MPLS-TP
VLAN + MAC
& L3& MPLS-TP
7
Plane
for X2
Interface
& L3& MPLS-TP & L3& MPLS-TP
Scenarios LTE Backhaul/Fixed Line LTE Backhaul/Fixed Line
Availability Now Now
Option1 ::::E-Line + L3 VPN Gateway
S-GW
AGGMPLS/MPLS-TP
eNB
CoreSEG
ACCMPLS-TP
Authentication
S1-MME
S1-U
Remote X2
OAM
S5/S8/S11
S1-U、S1-MME、OAM
S1-U、S1-MME、OAM
X2
HUB site
Access site
P PE
8
eNB
eNBS1
X2
S5/S8/S11
X2
1. Access Network: E-Line instances are used in the MPLS/MPLS-TP network to transport core and X2 traffic between Access site and PE.
2. Backhaul Network: When E-Line is terminated at core, X2 traffic is routed at core layer across Backhaul network by L3 VPN gateway with super VLAN configuration, Core traffic is forwarded to SEG.
3. L3 VPN is located in core network to forward X2 traffic across inter-region and core traffic to its destination.
PAccess site
PE
HUB site
Option 2: E-LAN + MPLS L3 VPN (multi- VPN)
S-GW
AGG
MPLS/MPLS-TP L3 VPN
eNodeB
CoreSEG
Authentication
S1-MME
S1-U
Remote X2
OAM
Authentication
S1-MME
S1-U
Remote X2
OAM
S1-U
S1-MME
OAM
P PE
HUB site
Access site
ACC
MPLS-TP
9
eNodeB
eNodeBS1
X2
OAM
S5/S8/S11Intercluster X2
X2 LAN
OAM
Autherntication
1. Access Network:Each kind of traffic is classified with a VLAN id per eNodeB, and transported with native Ethernet switch.
2. Backhaul Network: L3 VPN is used to forward S1 and X2 traffic across Backhaul network。
3. L3 VPN is located in Core network to forward X2 traffic across inter-region and core traffic
to its destination.
P
Access site
HUB site
PE
Comments on LTE Transport Solutions
Solutions Option1:
MPLS/MPLS-TP(E-Line)+ L3 VPN
gateway
Option2
E-LAN+ MPLS L3 VPN (Multi-VPN )
EnodeB
VLAN
Configuration
Two VLANs per eNB。
One for core traffic,
The other for X2 traffic
Multi VLAN per eNB
Transport Low high
10
Transport
Efficiency
Low high
X2 latency high Low
maintenance easy Average
IPSEC cost low High
Scalability good good
Separation and prioritization of Service
11
Service Awareness and E2E QOS
EF
AF
Traffic : DSCP >55
Traffic : VCI=20,30
Traffic : VLAN=20,30
DSCP>55
VCI=20,30
� Service awareness help to deploy differentiated dispatch according to priority
� ATM: service QoS are recognized based on VPI/VCI. Different types of services are mapped into different PWE3 circuits.
� Ethernet: QoS are recognized according to VLAN ID &
(Expedited Forward)
(Assured Forward)
� Service awareness help to deploy differentiated dispatch according to priority
12
BE VLAN=20,30
according to VLAN ID & DSCP( differentiate service Code Point ).
� Real-time TDM, carry out expedited forwarding at CBR.
(Best Effort)
� Ingress:Identify custom services, CAC processing and service priority mapping to tunnel priority
� Intermediate:service dispatch according to tunnel priority, can use PQ, PQ + WFQ schedule policies
� Egress:Pop tunnel label, restore native custom service and QoS information
Clock/Time Synchronization
13
Phase Synchronization
� Phase/Time synchronization is not only for TDD System
� Network Optimization & Traffic optimization
� Roll-out new mobile services, such as MBMS-SFN
� Self backhauling using TDD spectrum
14
Master ClockMaster Clock Slave ClockSlave Clock
Filter delay by algorithm
Slave Slave ClockClock
Master Master ClockClock
Synchronized Ethernet Synchronized Ethernet
& 1588 Transparent/Edge Clock& 1588 Transparent/Edge Clock
Hop by hop support
Packet Phase Synchronization:Require time to tune algorithm
Physical Clock Sync. & Packet phase Sync.:Require time for maturing of industry chain
1588 V21588 V2 1588 V21588 V2
GPS or GPS or Network Network
Sync.Sync.
GPS or GPS or Network Network
Sync.Sync.
Phase/Time Synchronization Implementation
RNC
Access Aggregation
Receiver
PSN
Time tree
BITS
PSN
15
NodeB
PSN
� Plenty of Synchronization Interfaces
• STM-N interface (line)• E1 interface (tributary)• Synchronous Ethernet interface (FE/GE)• 1588v2 interface• external clock interface(2MBits/ 2MHz)• GPS interface
� Frequency Synchronization::::• E1 Line Clock• G.8261 Synchronous Ethernet� Phase synchronization:• 1588 V2� Time synchronization:L1 (Synchronization Ethernet) + L2 ( IEEE 1588V2)
• Saving the protocol convergence time• Reduce the frequency of 1588 packet and bandwidth. • One packet per second can ensure the Time Sync. accuracy.
Phase Budgeting ( e.g. TD-SCDMA )
Master Master ClockClock△△△△T1
△△△△T2 △△△△T3
16
Radio sync. accuracy requirements of TD-SCDMA:∣△T1+ △T2+ △T3 ∣< 1.5us
Under the worst case, it suggests∣△T1∣< 150 ns∣△T2∣= 450~1050ns∣△T3∣= 300 ~900 ns ( 1BBU +1RRU / 300ns, 1BBU + 5 RRUs/900ns )
ZTE IPTN products 6000/9000 pass freq and phase sync in CMCC.
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� LTE Mobile Backhaul Transport Requirements
� LTE Mobile Backhaul Transport Solution
� ZTE IPTN Highlights � ZTE IPTN Highlights
ZTE IPTN Product Portfolio
Core layerAggregation layerAccess layer
ZXCTN 6300ZXCTN 6200ZXCTN 6100 ZXCTN 9004 ZXCTN 9008
18
CTN6100 CTN6200 CTN6300 CTN9004 CTN9008
Switching Capacity 6G 88G 176G 800G 1.6T
Height 1U 3U 8U 9U 20U
Service Slots 2 4 10 16/8/4 32/16/8
� ZXCTN 6100 is the most compact access PTN product in industry, only 1U height, the best choice for the backhaul;
� ZXCTN 6200 is the most compact 10GE PTN product, 3U height, can be deployed as the aggregation equipments in small-scale network or access equipments in large-scale and full-services network.
� ZXCTN 9008 has the largest switching capacity in industry, the switching capacity can be up to 1.6T.
� ZXCTN 6100 is the most compact access PTN product in industry, only 1U height, the best choice for the backhaul;
� ZXCTN 6200 is the most compact 10GE PTN product, 3U height, can be deployed as the aggregation equipments in small-scale network or access equipments in large-scale and full-services network.
� ZXCTN 9008 has the largest switching capacity in industry, the switching capacity can be up to 1.6T.
Low TCO Solution
19
Low TCO Solution - Power Consumption
Less than 50% power
consumption
Power consumption
(max.) (W)
Other Major vender
IPTN product700W
500W
1000Wthe industry’s lowest power consumption
ZXCTN 6200
ZXCTN 6300
20
consumption of its peers
�Green chip with low power consumption: Self-developed, Sleeping mode/standby mode.
�Centralized witching. New engineering and power-saving design to reduce the unused power
consumption in equipment.
�Automatic power control (APO), fan with continuously variable design.
�Intelligent and dynamic adjustment system for saving power consumption.
30W90W
200W
Access layer
equipmentAggregation
layer equipment
Aggregation
layer equipment
ZXCTN 6100
ZXCTN 6200
Hierarchical OAM for Service Monitoring
MEP
MIP
Client Service
Client Service OAM(UNI to UNI)
Access Link OAM
Access Link OAM
802.3ah
Low TCO Solution- Easy Operation and Maintenance
21
� Hierarchical OAM to realize precise fault management and performance monitoring
� Hardware-based OAM,insert check-frame per 3.3ms,Carrier class protection (<50ms)
� Support end-to-end service management, support on-demand configuration of OAM according to the service
Client Service OAM(UNI to UNI)
PW OAM
Tunnel OAM
Segment OAM
MEF/ITU-T Y.1731
ITU-T G.8114 / Y.1730 / Y.1731 / 802.1ag
ITU-T G.8114
ITU-T G.8114
PW OAM
Tunnel OAM
Segment OAM
BSC/RNC
SGSN
MSCBTS
NodeB
ZXCTN 6100
ZXCTN 6200 ZXCTN 6100/6200
TDM E1
IMA E1/FE
Equipment Level Redundancy• Key Board 1+1 hot-backup• Clock/Switching/Control board • Power / Fan 1+1 hot-backup• TPS Protection
ZXCTN 6300
Carrier-class Reliability Guarantee
Less than 50ms PS and Carrier-class Reliability Guarantee
22
MGWAGW
ZXCTN 6100ZXCTN 6200
UNI Protection
• Link Aggregation(LAG)
• IMA E1 Protection
NNI Protection• 1+1 LSP Protection
• 1:1 LSP Protection• 1+1 SNC Protection
• 1:1SNC Protection• MPLS-TP Ring Protection• MPLS FRR
ZXCTN 6200/6300 ZXCTN 6300
BTS
NodeB
Bandwidth share & statistical multiplexing
Peak=14Mbps
Average=2Mbps VC-n-xv
Efficient Use of Bandwidth
Core Network
Metro Edge
Carrier class protection
SR BSC /RNC BAS
Service awareness & Differentiate QoS
Highest priority
Best effortMedium priorityHigher priority
2
3
5
Pse
ud
o w
ire
OA
M &
PS
Tu
nn
el O
AM
&P
S
Section O
AM
& P
S
Carrier class end to end OAM
4
ZTE IPTN solution
23
•Resolves all problems in NG-SDH, and achieves higher bandwidth utilization rate.
•Resolves all problems in Metro-E:
� achieves lower equipment complexity.
� achieves better operation and monitoring.
� achieves lower OPEX and lower CAPEX.
•Open platform satisfying the requirement of mobile backhaul and FMC.
3GResidential 2G
3-playBB
Clock Synchronization
(Synchronous Eth. + 1588 V2)
Differentiate QoS6
PWE3
TDM
Abis
PWE3
ATM
AAL2/5
Iub
ETH
PWE3
802.1Q
IP
Iub
Tunnel Tunnel
PHYPHY
Tunnel
PHY
TDM E1 FE/GEATM E1
Multi service emulation-pseudo wire
1
NNGSDHGSDH IPTNIPTNSTMSTM--NN
NodeB
FEFE
RNC
peer modelpeer model-- by STMby STM--N interfaceN interface
NNGSDHGSDH IPTNIPTNGEGE
NodeB
FEFE
NNI to NNINNI to NNI
UNI to UNIUNI to UNI
Interoperability with NGSDHInteroperability with NGSDH
RNC
24
NNGSDHGSDH IPTNIPTNGEGEFEFE
ClientClient--Server ModelServer Model-- by data interfaceby data interface
STMSTM--NN FE/GEFE/GE
InterInter--connectionconnection TDM, PacketTDM, Packet PacketPacket
Unified EMSUnified EMS Yes , Yes , (DCC translation(DCC translation )) NoNo
Clock transferClock transfer Yes Yes NoNo
�� Access layer productAccess layer product
�� Max access capacity of 3GMax access capacity of 3G
�� Power Consumption: 30WPower Consumption: 30W
�� Only 1UOnly 1U((480mm(W) X 43.6mm(H) X 225mm(D) 480mm(W) X 43.6mm(H) X 225mm(D) ))
�� Service interface on the main boardService interface on the main board::
GEGE××22++FEFE××88�� Management interface on the main board:Management interface on the main board:
Qx interfaceQx interface
LCT interfaceLCT interface
RSRS--232 interface232 interface
Clock interfaceClock interface
ZXCTN 6100 Introduction
Service Board
Service BoardPower
Power redundancy
25
Clock interfaceClock interface
GPS interface GPS interface
Alarm input/output interfaceAlarm input/output interface
�� Interface on the extension boardInterface on the extension board::
FEFE((oo))××44,,
STMSTM--11××22,,
E1E1××1616�� Two kinds of power supply boards :Two kinds of power supply boards :
220V AC power supply 220V AC power supply
--48V DC power supply48V DC power supply
Main Board
Power
ZXCTN 6100 Service ZXCTN 6100 Service
InterfacesInterfaces
Maximum Access Maximum Access
CapacityCapacity
IMAIMA /TDM E1/TDM E1 3232
STMSTM--11 44
FEFE 1616
GEGE 22
ZXCTN 6200 Introduction
�� Access/aggregation layer productAccess/aggregation layer product
�� Access capacity of 40GAccess capacity of 40G
�� Power consumption: 200WPower consumption: 200W
�� Hardware ProtectionHardware Protection
�� Only 3UOnly 3U(( 444444mm (W) mm (W) X 130.5mm(H) X 240mm(D) X 130.5mm(H) X 240mm(D) ))
�� The 4 slots for service board are compatible:The 4 slots for service board are compatible:
GEGE××88,,FEFE××88,,STMSTM--11××44,, STMSTM--44××22,, E1E1××1616,,10GE10GE××11
26
Control Board
Control Board
4x Service Slots
Power 1+1
ZXCTN 6200 ZXCTN 6200
Service InterfaceService Interface
Maximum Access Maximum Access
CapacityCapacity
TDM E1TDM E1 6464
IMA IMA E1E1 6464
STMSTM--1/41/4 16/816/8
FEFE 3232
GEGE 2424
10GE10GE 22
�� Aggregation layer productAggregation layer product
�� Access capacity of 80GAccess capacity of 80G
�� Only 8UOnly 8U((441mm(W) X 352.8mm(H) X 240mm(D) 441mm(W) X 352.8mm(H) X 240mm(D) ))
�� Power consumptionPower consumption :500W:500W
�� 6 low speed service slots (compatible):6 low speed service slots (compatible):
GEGE××88,,FEFE××88,,STMSTM--11××44,, STMSTM--44××22,, E1E1××1616
�� 4 high speed service slots (compatible):4 high speed service slots (compatible):
10GE10GE××11
ZXCTN 6300 Introduction
27
Control1+1
10x Service Slots
Power 1+1
ZXCTN 6300 ZXCTN 6300
Service InterfaceService Interface
Maximum Access Maximum Access
CapacityCapacity
TDM E1TDM E1 9696
IMA IMA E1E1 9696
STMSTM--1/41/4 24/1224/12
FEFE 4848
GEGE 4848
10GE10GE 44
ZXCTN 9000 Series ProductZXCTN 9000 Series Product
� L2, VLAN, S-VLAN, STP, IGMP Snooping, ACL, DPI
� ESRP multilayer ring protection, IPTV management
� IPv4 Routing, RIP, OSPF, BGP, PIM-SM, PIM SSM
protocol
� MPLS LDP FRR, MPLS-TE, MPLS-TE FRR
� VPWS, PWE3, H-VPLS, MPLS L3 VPN
� Ingress & Egress H-QoS
� MPLS/T-MPLS/MPLS-TP
� Ethernet OAM, MPLS OAM
� Synchronized Ethernet
28
� Synchronized Ethernet90089004
Number of SlotNumber of Slot
Number of Number of
Service SlotService Slot
Switching Switching
CapacityCapacity
10GE*10GE*
GE*GE*
STMSTM--1*1*
ZXCTN 9004ZXCTN 9004 ZXCTN 9008ZXCTN 9008
66 1212
44 88
800Gbps800Gbps 1.6Tbps1.6Tbps
1616 3232
192192 384384
6464 128128
88 1616
*Maximum Access Capacity
Roadmap of ZTE IPTN ProductsRoadmap of ZTE IPTN Products
Release Time
09Q2
Release Time
10Q1
Release Time
10Q3
Release Time
11Q1
Release Time
09Q4
Release Time
10Q1
ZXCTN 9000 SeriesV2.8.32
• T-MPLS/MPLS
• MPLS-TE FRR
• L2VPN、L3 VPN
• E1、ATM STM-1 PWE3 emulation
• 1588V2
• Control plane
ZXCTN 9000 SeriesV2.8.31
• T-MPLS
• C.STM-1 PWE3 emulation
• H-QoS
• E-Line、E-LAN、E-Tree• Sync Ethernet
• T3 unified NMS
ZXCTN 9000 SeriesV3.00.00
• T-MPLS upgrading to MPLS-
TP
• ASIC line cards
Release Time
10Q4
29
ZXCTN 6000 Series
V1.00.001. T-MPLS
2. E1、ATM STM-1、C.STM-1 PWE3 emulation
3. E-Line、E-LAN、E-Tree
4. Sync Ethernet、1588V25. T3 unified NMS
ZXCTN 6000 SeriesV1.1.00
• T-MPLS/MPLS
• MPLS-TE FRR
• MPLS mobile gateway
• Control plane
ZXCTN 6000 SeriesV2.00.00
• LTE Backhaul application
• Mobile Offload application
• New product for Ethernet
Microwave
ZXCTN 6000 SeriesV3.00.00
• T-MPLS upgrading to
MPLS-TP
2009 Time2010 20102009 2011
09Q2 10Q1 10Q3 11Q1
Commercial Version
Developing Version
Planning Version