Huawei Universal Transport Solution for Urban Rail Transit
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1 Huawei Universal Transport Solution for Urban Rail Transit
2 Urban Rail Transit: Fast, Convenient, Secure, and Environment-Friendly Urban rail transit is an important part of urban public transport systems. It is fast, convenient, secure, and environment-friendly. Urban rail transit requires a dedicated communication system for daily operation management, maintenance, and vehicle dispatch. The communication system also provides information services for passengers. Challenge 1: Fast Growth in Video/Data Services Requires 20G to 30G Bandwidth Video surveillance is becoming increasingly recognized in rail transport, providing comprehensive security and protection. Single HD camera: 6 8 Mbit/s 4 times the bandwidth of a SD camera Protection for tunnels and viaducts New video surveillance requirements More IT-based services are being applied. Real-time monitoring to maintain safety and stability Dense surveillance camera deployment at railway stations Video service backup and disaster recovery Burst traffic requirements Public system services are rapidly increasing. Refined maintenance system Improving operation quality Subway Wi-Fi for better passenger experience Shift video conference Higher work efficiency Fast 4G services, improving passenger satisfaction Private bank and store service, adding value to subway commercial services Challenge 2: Different Interfaces for Both and IP Services Dispatching E1 CCTV Telephone FXO/FXS/E1 PIS SCADA TETRA RS232/V.24/E1 E1 service Unified bearer IP service Video conference OA 2G base station N*E1 AFC Challenge 3: High Security and Reliability Requirements Dispatching Telephone CBTC Tube Tube Tube Radio Signaling system Ticketing Office computer Bank ATM information network Production service systems, such as the dispatching system, provide high reliability. The protection switching time is less than 50 ms. CBTC requires the transport network to provide independent end-to-end physical channels and support dual-feed and selective receiving. Sensitive ticketing information, office computer network, and bank ATM should be reliably isolated, and the information interference should be low. Different service systems should not affect each other.
3 Huawei Universal Transport Solution for Urban Rail Transit Huawei universal transport solution for urban rail transit combines MSTP and MPLS-TP packet technologies to provide both and packet services on one device. The solution also provides E2E IEEE 1588v2 time synchronization for the evolution to LTE train-ground wireless communication. The solution uses a unified switching architecture at its core to ensure the security and reliability of urban rail transit and support the evolution to packet-only networks. Operations Control Center (OCC) ISCS AFC PIS OA Video conference PAS BAS Orderwire phone Smooth evolution from to IP Station Packet GPS/BITS Dispatching telephone PIS Native + MPLS-TP OSN 7500 II Office telephone AFC Client side Network side CCTV ETH VC PKT 40G PKT 10G PKT 40G/10G Ring Packet services: MPLS-TP ring protection services: SNCP or MSP BAS Clock system Supervisory sub-center PAS Data network OA OSN 7500 II/OSN v2 Challenge Solution Key Technology Fast growth in video/data services requires 20G to 30G bandwidth High bandwidth Smart 40G Different interfaces for both and IP services Unified transmission Hard and soft pipes and built-in PCM High security and reliability requirements High security and availability Multiple layers of protection, MRPS, and hard and soft pipes
4 Smart 40G: Meeting the Fast Growth in Service Bandwidth Optical port bandwidth quadrupled Live network acceleration 40G 10G 4*10G Adjustable capacity Now N*10G SDH board Optical multiplexer N*10GE packet board + = Optical demultiplexer 40G smart universal line board Future 10G 40G Simplified network design Plug-and-play optical ports, overcoming four challenges in WDM network design: Optical power calculation Wavelength planning Dispersion tolerance OSNR Optical-layer design 10G 20G 40G Upgrade bandwidth through license with the same board Mux OA DCM Wavelength Hard and Soft Pipes: Multi-service Transmission for Any Scenario Signaling Interfaces for multiple services Unified and packet switching Unified transmission by the smart universal line board ATP backup channel ATS Communication Statistical multiplexing and convergence of packet services E2E 1588v2 PIS Self-service ticketing CCTV OA Orderwire phone Time division multiplexing and physical isolation of services Type Technology Isolation Method Feature Hard pipe SDH Physical isolation High quality, high security, and dedicated bandwidth Soft pipe MPLS-TP Logical isolation High efficiency and shared bandwidth MPLS-TP: Powerful Packet Forwarding Capacity and SDH-like OAM and Protection MPLS-TP ring protection is a mainstream ring protection technology in the industry. OCC Station4 MRPS1&2 MRPS1&2 Station5 Rail depot Station6 Protection switchover time 50 ms Prevention of multiple points of failure on links or nodes Easy to configure and scale Protection of P2P, P2MP, and MP2MP services
5 MPLS-TP ring protection ensures reliable and efficient transmission of PIS multicast services. PIS server Daisy chain + ring protection Broadcast services Blocking point Service blocking points are created on ring networks to prevent broadcast storms. Link Fault Node Fault PIS server Unblocking point fault Daisy chain + ring protection PIS server Unblocking point Daisy chain + ring protection fault Broadcast services Broadcast services Prevention of broadcast storm Broadcast storm is prevented through service blocking points on the ring network. Simple and efficient forwarding Multicast/Broadcast packets require the same bandwidth as unicast packets, saving bandwidth. Hardware line rate and MAC address forwarding ensure the lossless transmission of PIS live streaming. Prevention of multiple types of failure The failover time is less than 50 ms to protect services from faults on links or nodes on ring networks. Built-in PCM: Unified Transmission and Simplified Network Traditional Solution Huawei All-in-One Solution MSTP PCM PCM MSTP Hybrid MSTP Hybrid MSTP PCM boards High reliability Direct access and line-side cross-connection of low-speed services to minimize device stacking service concatenation. Lower cost MSTP and PCM combined in one, reducing footprint and investment. Easy O&M Unified management on the U2000, providing visual interfaces, E2E service configuration, and unified monitoring of alarms and performance. Multiple Layers of Protection: Satisfying Service Protection Requirements of Urban Rail Transit Multi-layer protection and 50 ms hitless protection switching network protection SDH protection: LMSP, RMSP, E1 SNCP, and SNCP EoS protection: LCAS, LPT, STP/RSTP, MSTP, ERPS, LAG, and DLAG Device-level protection TPS, BPS, and PPS 1+1 protection of the system control, cross-connect, and clock board 1+1 protection of power supplies Fan protection OCC 10G/40G Depot Packet network protection Tunnel APS, PW APS, packet-based linear MSP, LPT, MSTP, MRPS, LAG, and MC-LAG
6 Product Family OSN 580 Dimensions (H x W x D) (mm) Switching Capacity Packet Switching Capacity Service Slots 221 x 442 x G (higher-order)/20g (lower-order) 560G 15 (DC model)/12 (AC model) OSN 7500 II Dimensions (H x W x D) (mm) Switching Capacity Packet Switching Capacity Service Slots 800 x 496 x G (higher-order)/40g (lower-order) 320G 16 (processing boards)/16 (interface boards) Scan this QR code for further details ican@huawei.com By Enterprise Transport MO & Information Dept Copyright 2017 Huawei Technologies Co., Ltd. All rights reserved.
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