03 zte%27s lte mobile backhaul solution

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



� 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


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






� 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.





� 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


�� 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


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


27

Control1+1

10x Service Slots

Power 1+1

ZXCTN 6300 ZXCTN 6300

Service InterfaceService Interface


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


• T-MPLS

• C.STM-1 PWE3 emulation

• H-QoS

• E-Line、E-LAN、E-Tree• Sync Ethernet

• T3 unified NMS


• 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


• T-MPLS/MPLS

• MPLS-TE FRR

• MPLS mobile gateway

• Control plane


• LTE Backhaul application

• Mobile Offload application

• New product for Ethernet

Microwave


• T-MPLS upgrading to

MPLS-TP

2009 Time2010 20102009 2011

09Q2 10Q1 10Q3 11Q1

Commercial Version

Developing Version

Planning Version

03 zte%27s lte mobile backhaul solution

Documents

transport solution lte

x2 traffic

core traffic

core network

lte transportoption1

s1100 enbs lte mobile

mplsmplstp network

user data x2 data rate