Post on 22-Dec-2015
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
Background of PTN Development Technical Features of PTN Structure of ZTE PTN Product PTN Network Application
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
ITU-T G.8114/G-Ach+Y.1731
ITU-T G.8114/G-Ach+Y.1731
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
Background of PTN Development Technical Features of PTN Structure of ZTE PTN Product PTN Network Application
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.
Maximum access capacity
ZXCTN 9004 Product Overview
Bidirectional switching capacity “176G”
Dimension (mm) : 482.6*352.8*243 mm (W×H×D)
Max. power consumption:<500W
“1+1” redundant backup of the master controller; “1+1” redundant backup of the switching network
Supporting TPS protection
Maximum access capacity
ZXCTN 6300 Product Overview
Bidirectional switching capacity “88G”
Dimension (mm) : 482.6*130.5*240 mm (W×H×D)
Max. power consumption: <250W
“1+1” redundant backup of the master controller; “1+1” redundant backup of the switching network
Maximum access capacity
ZXCTN 6200 is the compact PTN device that first supports the 10GE interface.
ZXCTN 6200 Production Overview
Maximum access capacity
4xFE(o) service subcard 16xE1 service subcard1xGE service subcardMotherboard: 2xGE+8xFE
Bidirectional switching capacity “6G”
Dimension (mm) : 480*43.6*225mm (W×H×D)
Max. power consumption:<45W
“1+1” redundant backup of the master controller; “1+1” redundant backup of the switching network
Various installation modes: desk-top mounting, wall mounting and cabinet mounting
ZXCTN 6100 Product Overview
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
Background of PTN Development Technical Features of PTN Structure of ZTE PTN Product PTN Network Application
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.