ptn overview. contents background of ptn development technical features of ptn structure of zte ptn...

PTN Overview

Contents

Background of PTN Development Technical Features of PTN Structure of ZTE PTN Product PTN Network Application

ALL IP — Development Trend of Service Network

Drive for IP service: To unify network protocols, simplify network layers and reduce TCO Various types of new service available, to achieve integrated service

operations

CATVHFC

Telephonenetwork

Mobile radionetwork

Internet

Requirements for Bearer Network When Services Are Transformed to All IP

Interface compatibility——taking the Ethernet interface as a core and compatible with the TDM/ATM services

Service packetization——based on packet switching and transmission, and functioning as statistics

QoS mechanism——monitoring services and providing end-to-end differentiated services

Synchronization ——carrier-class clock/time synchronization scheme Network availability——carrier-class OAM and protection Profit maximization——reducing CAPEX/OPEX

Core layer

Packet access Packet access convergenceconvergence

Bearer networkBearer network

Access convergence layer

Service application

Core Core scheduling scheduling

channelchannel

Packet

Application platform

Technology Selection of IP Bearer Network

CoreAccess convergence

Service application

Packet

？？Application

platform

MSTP

Ethernet switch

Router

New technology

IP service bearer

IP core backbone networkSR SR

Core

Access

Non-facing to connected networks and carrier-class network guarantee unavailable

Delicacy management and differential services unavailable Limited support for traditional services

Lack of an effective maintenance method; difficult in network monitoring

Disconnected service route, anduncertain delay, jitter and packet loss Due to lack of an effective

detection mechanism of OAM,Protection cannot be completed fast and effectively.

Limited capacities of TDM service accessand time synchronization

Service Adaptation Analysis on Ethernet Bearer Network

COREMetro

SR SR

Broadband business

BTSBTSNodeB NodeB

Routers

IP core backbone network

The traditional router only supports limited traditional TDM/ATM services.

The traditional router lacks enough OAM methods, which is difficult to meet the carrier-class requirements of the transport network.

The traditional router less supports time synchronization.

The traditional router only supports limited traditional TDM/ATM services.

Time synchronization of the traditional router is realized by the NTP technology, and synchronization accuracy keeps the ms level.

The OAM functions defined in the IP/MPLS are simple, not supporting the layered OAM.

IP Service Adaptation Analysis on IP/MPLS Network

The emergence of MSTP is to solve the problem of IP service bearing on transmission network; however, this improvement is not thorough because of: Poor convergence capability and low statistical reuse Low extensible capacity Fixed granularity and serious waste of bandwidth Poor multicast processing capacity

Extendi-bility

Video serverVideo server

MSTPMax. bandwidth

SDH/MSTP bandwidth model

idle bandwidth unavailable

STM-N

STM-N

IP Service Adaptation Analysis on MSTP Network

Background of PTN Development

Solution?Solution?

IP-Based PTN Packet Transport Network (PTN)

PTNPTN

Packet technology(MPLS/

Enhanced Ethernet)

SDHtransmission experience

PTNPTN

• L2/L3 packet transfer technology

• Statistics, reuse and QoS

• Flexible deployment

• E2E service provision and management

• Accurate clock synchronization

• OAM and protection

PTN takes packets as a transmission unit and bears carrier-level Ethernet services; meanwhile, it is an integrated transmission technology compatible with TDM, ATM and FC.

The PTN technology, based on a packet architecture, carries on the principle of MSTP and combines the Ethernet and MPLS advantages, which is developing into a technical selection of the next-generation packet bearing.

3G

PTN ＋ OTN

VIP3G

SGSN/GGSN

MSC/TMSC

SRRNC

Bearing

User service

Service application and control

Home applicatione-NB 3 Play

Future PTN—Unified Bearing

To achieve unified bearing of 2G, 3G, LTE, VIP, family users, WLAN, and Triple-Play

IP services and flattening bearer network; PTN+OTN achieves unified bearing on access convergence plane. PTN is a wide packet transport network based on standard protocols.

Access-layer service isolation: classify services according to different demands on service processing terminals, such as voice VLAN, video VLAN, and data VLAN, to isolate services logically.

Network edge: with service sense and control capability

IP over OTN/WDM

Full IP services, Unified Bearer Network Establishment with PTN+OTN Structure, Flattening and Intelligent Network

Contents


TDM

E1

Abis PWE3

TDM

Abis

E1

TDM

Abis

IMA

E1

ATM

AAL2/5

Iub

PWE3

ATM

AAL2/5

Iub

STM1

ATM

AAL2/5

Iub

ETH

802.1Q

IP

Iub ETH

PWE3

802.1Q

IP

Iub

ETH

802.1Q

IP

Iub

TDM E1 IMA E1 EthernetATM STM-1TDM E1Ethernet

Tunnel Tunnel Tunnel

PHYPHYPHY

TDM to PWE3: supports transparent and payload extraction modes. In the transparent mode, it is not sensitive of TDM service structure, yet regards TDM services as bit stream at a stable rate and transmits the TDM service transparently on the basis of byte. In the payload extraction mode, it is sensitive of frame structure/framing mode/timeslot information of TDM service, extracts the TDM payload and puts it into packet payload in order for transmission.

ATM to PWE3： supports single/multiple cell encapsulation. Multi-cell encapsulation may increase network delay, which needs to be comprehensively considered in combination of network environment and service requirements.

Ethernet to PWE3： supports non-control-word and control- word transport modes.

PTN

CEPE1 PE2

CE

TDM/ATM/Ethernet

TDM/ATM/Ethernet

Unified Multi-Service Bearing

EF

AF

BE

1Traffic : DSCP >55

2Traffic : VCI=20,30

3Traffic : VLAN=20,30

1

2

3

DSCP>55

VCI=20,30, AF

VLAN=20,30

Service sense helps to adopt appropriate scheduling modes according to different service priorities.

For an ATM service, service sense is mapped to different PW for processing based on cell VPI/VCI labels. Priorities (including drop priority) can be mapped to the EXP field of PW.

For an Ethernet service, service sense can be based on outer VLAN ID or IP DSCP.

For the TDM E1 real-time service with high delay sensitivity, forward it rapidly at a fixed rate.

(Expedited Forward)

(Assured Forward)

(Best Effort)

6100/6200 6300

PTNBSC/RNCNodeB

BTS

SR/BRAS

MSC/MGW

Intelligent Sensing Service

PE PE

PP

Providing End-to-End Distinguishing Service

Network entrance: to identify user services, control access, and map service priorities to tunnel priorities

Forwarding node: To schedule according to tunnel priorities in modes of PQ, PQ+DRR, and PQ+WFQ

Network exit: To display the tunnel-layer label, and restore the self-carried QoS information

EF

AF

BE

BSC

RNC

BSC/RNC

SGSN

MGW

MSC

FE

Active clock source

Standby clock source

aGW

MME

PTN access loop

1PPS+TOD

PTN access loop

PTN convergenc

e loop

eNB

NodeB

Adopts the “IEEE 1588v2 + G.8261” solution, which effectively

promotes time synchronization accuracy.Supports the SSM and BMC protocols and fulfills automated protection switchover of the time link, which guarantees reliable transmission of time.

Meanwhile, supports in-band (Ethernet) and out-of-band (1PPS + TOD) synchronization interfaces, with flexible deployment.

Under 100% load flow, meets the synchronization requirements of BSs in large-scale networking.

High-Accuracy Clock Synchronization Solution

Supports the layered OAM, which realizes refined monitoring for faults and performances.

Supports the OAM engine, which realizes message insertion of the 3.3ms OAM protocol and carrier-class protection switchover.

Supports end-to-end management of services and demand-based OAM configuration according to service states.

MEP

MIP

OAM atomic function

Client Service

Client Service OAM(UNI to UNI)

PW OAM

Tunnel OAM

Segment OAM

Access Link OAM

Access Link OAM

PTN

802.3ah

ITU-T Y.1731/802.1ag

ITU-T G.8114/G-Ach+Y.1731

PW OAM

Tunnel OAM

Segment OAM

PTN



Refined Service Monitoring

SR/BRAS

Protection functions on the

device:“1+1” hot backup of clock/switch/

control processing boards“1+1” hot backup of power and

fan processing boardsE1 TPS protection

Protection functions on the network:T-MPLS/MPLS-TP route protectionT-MPLS/MPLS-TP SNCP protectionT-MPLS/MPLS-TP loop-network protectionDual-loop dual-node protection Dual homing protectionEthernet protection

Protection functions

on the network edge: Link aggregation (LAG) IMA protection

BTS/NodeB BSC/RNC

The most comprehensive carrier-class protection mechanism Comprehensive network protection, network-edge protection and device protection Various protection mechanisms available to corresponding services

eNBaGW

Carrier-Class Protection Mechanism

Unified Network Management

PTN

MSTP

MSTP

WDM

PTN

NetNumen T31 NetNumen T31

PTN MSTP

NetNumen T31

NetNumen T32

OSSStandard

northbound interface

Adopts the ZTE unified network management platform “NetNumen T3” to fulfill unified management of PTN, SDH/MSTP, WDM and OTN.

Provides these functions such as route creation and management, QoS/OAM management as well as real-time alarm and performance monitoring.

Provides NE management and friendly interfaces that accord with requirements of the traditional transmission network, which makes PTN more manageable and easier to maintain.

Contents


ZXCTN 6100 ZXCTN 6200 ZXCTN 6300 ZXCTN 9008ZXCTN 9004

BSC

RNC

SR

BRAS

Access layer Convergence layer

GE

GE

10GE/new or legacy network

Abis

STM-1/GE

GE/10GE

Iub

STM-1/GE

GE/10GE

Metropolitan area core layer

S-GW

MME

MGW

Residential

Business

Mobile

Providing perfect PTN series products Providing perfect PTN series products Integrated platform,high-efficiency transmission

Integrated platform,high-efficiency transmission

Reliable, security, energy-saving and green network

Reliable, security, energy-saving and green network

Refined operation & maintenance,simplified management

Refined operation & maintenance,simplified management

ZTE PTN Product Family

Core layerConvergence layerAccess layer

ZXCTN 6300 ZXCTN 6200 ZXCTN 6100 ZXCTN 9004 ZXCTN 9008

ZXCTN 6100 is the most compact commercial PTN product on the access layer and applies to the BS access scenario only with 1U high.

ZXCTN 6200 is the most compact 10GE PTN product. With 3U high, it works as the convergence edge device in a small-scale network, or as the high-end access-layer device in a large-scale network or full-service scenario. ZXCTN 6200 meets requirements of 10G access loop for developed areas.

ZXCTN 9008 is the PTN product with the largest switching capacity up to bidirectional 2.24T, which fully meets requirements of all services.

These products have gained the PTN network access approval of Ministry of Industry and Information Technology. ZTE is the vendor that provides the most commercial PTN products currently.

ZXCTN 6100 is the most compact commercial PTN product on the access layer and applies to the BS access scenario only with 1U high.

ZXCTN 6200 is the most compact 10GE PTN product. With 3U high, it works as the convergence edge device in a small-scale network, or as the high-end access-layer device in a large-scale network or full-service scenario. ZXCTN 6200 meets requirements of 10G access loop for developed areas.

ZXCTN 9008 is the PTN product with the largest switching capacity up to bidirectional 2.24T, which fully meets requirements of all services.

These products have gained the PTN network access approval of Ministry of Industry and Information Technology. ZTE is the vendor that provides the most commercial PTN products currently.

Type CTN6100 CTN6200 CTN6300 CTN9004 CTN9008

Bidirectional switching capacity

6G 88G 176G 800G 2.24T

Height 1U 3U 8U 9U 20U

Slot No. 2 4 10 16/8/4 32/16/8

Providing Perfect PTN Series Products

Bidirectional switching capacity “2.24T” Dimension (mm) ： 482.6*572.6*888.2mm (W×D×H) Max. power consumption： <2700W

“1+1” redundant backup of the master controller and clock; “3+1” redundant backup of the switching network

High integration of board ports; the design of flexible service subcard to enhance the use of each slot

A large amount of bandwidth is reserved; ports can be smoothly upgraded to 40G/100G to meet smooth evolution of carriers’ service networks.

Maximum access capacity

9008 is the PTN device with the largest switching capacity.

ZXCTN 9008 Product Overview

Bidirectional switching capacity “800G” Dimension (mm)： 482.6*572.6*399.3mm (W×D×H) Max. power consumption： <1400W

“1+1” redundant backup of the master controller; “1+1” redundant backup of the switching network

High integration of board ports; the design of flexible service subcard to enhance the use of each slot

A large amount of bandwidth is reserved; ports can be smoothly upgraded to 40G/100G to meet smooth evolution of carriers’ service networks.



Bidirectional switching capacity “176G”

Dimension (mm) ： 482.6*352.8*243 mm (W×H×D)

Max. power consumption：<500W


Supporting TPS protection




Dimension (mm) ： 482.6*130.5*240 mm (W×H×D)

Max. power consumption： <250W



ZXCTN 6200 is the compact PTN device that first supports the 10GE interface.

ZXCTN 6200 Production Overview


4xFE(o) service subcard 16xE1 service subcard1xGE service subcardMotherboard: 2xGE+8xFE


Dimension (mm) ： 480*43.6*225mm (W×H×D)

Max. power consumption：<45W


Various installation modes: desk-top mounting, wall mounting and cabinet mounting


Max. power

consumption(W

)

30W

90W

200W

700W

Access-layer device

Convergence-layer device

Products at the same level from other vendors

PTN product

Power consumption is 1/3 of that of same-level products in

industry.

Lower-power-consumption and self-designed green chip, supporting dormant/standby mode Centralized exchange, new artwork, energy-saving design, reducing useless intra-device

power consumption Auto power control (APC), infinitely various speed fan Intelligent dynamic power adjustment system

Establishing Green Network—Energy-Saving: Lowest Power Consumption in Industry

Values

Reducing cabinet footprintReducing cabinet footprint

Compact design Combined device to

reduce deployment

Large-capacity,

highly-integrated chip

Reducing equipment room occupation

Reducing equipment room occupation

Height： 1U

Power consumption： < 30W

Advanced BS access scheme in industry

Advanced BS access scheme in industry

3G

Establishing Green Network — Fitness

Honor and Credit

“ZXCTN 9000 + ZXCTN 6000” has been listed in InfoVision Award at Broadband World Forum Europe 2009.

Contents


Typical Application Scenario—Backhaul End-to-End PTN

1. Overall PTN end-to-end networking

is used for transmission of high-

value services, such as mobile BS

services and VIP group services.

2. A loop network is used as a primary

mode in network topology.

3. Supports hierarchy-based OAM,

service-based network protection

and protection based on devices,

boards and cards.

4. High-accuracy time synchronization

is instead of GPS.

5. Supports the end-to-end service

management capacity of network

management.

6. Accords with operation &

maintenance customs of traditional

transmission.

Typical Application of Backhaul Network

BSC

RNC

6100

6100

61006100

6100

6300

63006300

6300

Convergence layer

Access layer

Core layer

6100

GE GE

10GE

Typical service application types:

TDM E1

IMA E1

Ethernet service

Typical Application Scenario--Metro-E

1. Used under the IP/MPLS

backbone network; divided

into three layers NPE, EPE

and UPE; provides a large

number of MPLS L2 VPN

and MPLS L3 VPN as well

as multicast to achieve

integrated bearing of multi-

services.

2. Needs powerful network

OAM and protection capacity.

3. Supports powerful multicast

copy capacity; EPE and NPE

needs large capacity and

table entries.

Typical Application Scenario--FMC

1. Networking mode: IAN=IP/ETH/TDM/PWE3 service bearing + enhanced OAM + unified graphic network management +clock

2. Emphasized on dynamic support of IP services and used for mobile BS services and integrated bearing of fixed network services

3. Network topology primarily adopts a loop and tree-shaped network.

4. Has high requirements for bearing capacity of IP services as well as OAM and unified network management.

5. High-accuracy time synchronization is instead of GPS.

6. Combined with operation & maintenance customs of data communication and transmission

Typical Application Scenario—Backhaul Mobile Gateway Networking

1. Moves through the third-party

network and supports the mobile

backhaul network of Any-media.

2. Supports dynamic MPLS or

Ethernet.

3. Supports the 1588V2 ACR

frequency restore algorithm.

4. Due to optimized and compact

Abis, promotes transmission

efficiency and reduces leased

bandwidth.

5. Supports diversified interfaces

such as ML-PPP E1, DSL, MW,

PON and Ethernet.

PTN Commercial Network of China Mobile

The PTN network of Shen Zhen in China, as a result of ZTE together with China Mobile spurring TD-based IP services, is a commercial extension of metropolitan area transmission network IP services of China Mobile.

First achieve test and deployment of time synchronization. In the first-phase item, there have been 100 access points, forming 14 GE access

loops. Two convergence loops are deployed on the convergence layer. After wavelength –division scheduling through the core layer, services are established at the core equipment room.

10GE loop network

Loop 1

Loop 2

Loop 3

Loop 4

Loop 5

Loop 6

Loop 7

Loop 8

Loop 9

Loop 10

Loop 11

Loop 12

Loop 13 N*STM-1

N*GE

N*STM-1

N*GE

Bao Cheng

PTN network management

server

天福T

和平二T

福山工业T

塘尾有利T

福永三T

永和T

同富工业T

福永富裕T

福永海域T

骏亿实业T

新和村T

景和工业T

桥和T

福海二T

福海T

立新T

大王坡T

洛埔T

大洋凤塘T

塘尾二T桥头宝狄T

万里二T

福永正润T

桥头二T

福永凤塘T

福永成霖T

边岗T

万里T

福永四T

福永佳德F

福永佳德T福永美联F

福永中学T德丰T

福永惠康F

福永五T

大都福永T卡泊尼T

金石雅苑F

福永工业T

福永怀德T

怀德T

Sha Jing 2

Fu Yong 2

Fu Yong 3

沙四村T

衙边村T

辛养村T

壆岗厅F

牛朗围T

广深南环T

沙井新丰T

丽沙花都F

沙井万佳F

沙井西环T

沙井和一T

沙井安托T

沙井展群T

东宝T

沙井四T

沙茔T

万丰村T

大王山T

马鞍山T

沙井T

共和T

上南二T

宝安新桥T

沙井庄村T

新二T黄埔T

长流坡T

新桥三T

上南T

沙井芙蓉T

沙井红巷T 沙井洪田T

宝安北环T

丰洋T万丰T

公明T

上村T

南庄T

公明三T

公明二T

马山头T

合水口T 元山T

马田T

薯田T

Xi Li

Gong Ming 1

Sha Jing 3

ZTE PTN devices have first entered Asian famous MTO carrier—

Malaysia Telecom.

HSBB Item LOA of Malaysia Telecom

Problem of Viettel:All BSs are IP interfaces and therefore new IPTV services have been fast developed; however, bearing networks are still MSTP networks.

ZTE solution:ZXCTN9000 devices, with large-capacity service access and transfer, are adopted in this scenario to realize the carrier-level MPLS network and clock transfer by using the 1588 technology.

PTN Commercial Application of VIETTEL Vietnam

Combined with microwave devices in networking, 6000 and 9000

full-series devices are adopted to establish the 3G bearing network.

Promonte Project of Montenegro

The PTN devices have been successfully used in gateway scenarios existing in Europe, which combines two independent networks into a unified packet bearing network, greatly decreasing the device number and types to be maintained in addition to reducing clients’ CAPEX and OPEX.

The gateway application mode can fulfill interconnection between ZTE PTN devices and Extreme Networks or L2 switch from other vendors, which smoothly evolves the network.

Metro EthEth Eth

E1 E1/ ch.STM-1

Eth Eth

E1

E1/ ch.STM-1ZXCTN 6100

Metro Eth

SDH Network

Finnet Group of Finland—Establishing Gateway Application Mode

Telecom Italia ProjectBNAS 1

multicast

SP 1

unicastBE + VoD+VoIP

N2X t rafficgenerator

GbE

IE16200

BNAS 2

physical links and ports

multicast

N 2X t rafficgenerator

VoD Server

VoD

unicastBE + VoD +VoIP

SP 2

multicast SP 2

VoD SP 2

unicast SP 2

multicast SP 1

unicast SP 1

F2

M1 9008

M29008

F1

RF119004 RF21

9004

N2X trafficgenerator

multicast SP1 multicast SP2

multicast SP1

Circuit emulation

multicast SP2

RF129004

IE26300

Internet

Internet

Multicast SP1VoD SP2

SDH analyzer

SDH analyzer

PDH analyzer

PDH analyzer

E1

E1

STM-1

9004

9004

6100

STM-1 loopInstead of E1

ZTE PTN devices have achieved the first full-function test in Europe , and ZTE is currently a unique vendor that has finished the TI PTN test preceding other all competitors.

TIM Project of Brazil

ZTE solutionStandardPacket transmission network

Based on in-depth understanding of hybrid bearing requirements of 2G and 3G mobile network, ZTE raises the full-packet-based PTN device solution.

ptn overview. contents background of ptn development technical features of ptn structure of zte ptn...

Documents

transmission network

mstp network slide

ipmpls network slide

network layers

network protocols

ethernet bearer network

tdmatm services service

traditional router