Innovation & Convergence: Changing the Future of Metro Wireless Communication

2 Metro Applications PIS, CCTV Existing Situation of Urban Rail Transport Wireless Communication Train DispatchingCTBC NarrowBand Trunking Technology Voice, short data Broadband Data Technology Real-time data transmission of CBTC Broadband Data Technology PIS CCTV

3 Challenges Faced by Urban Rail Transport Wireless Communication Service Requirements of Urban Rail Transport Video transfer in the train and along the railway CBTC: Bidirectional real- time transmission of train control information Train Dispatching Current Challenges 1.Free and open frequencies, and more interference sources 2.No QoS guarantee mechanism 3.More sites, and difficult maintenance in tunnel 4.3 Independent networks, and high operation costs 5.Only voice, and no data and video dispatching 6.No ways to guarantee better service performance during high mobility PIS: Real-time broadcast of video, information, and disaster emergency

4 Huawei’s Innovation Progress Together with Zhengzhou Rail Transport Company Staring Point Discussion about PIS and Ground-to-Train communication solution Signed Cooperation Agreement Signed innovation agreement of Ground-to-Train communication solution by two parties Innovation Approval Project innovation approved by Huawei, and coming into implementation phase Acquired 1.8Ghz Frequency Applied for frequency band (1795M- 1805M) for Ground-to-Train wireless communication Passed Technical Innovation Demonstration Huawei LTE metro Ground-to-Train communication solution was adopted Project Launch Joint commercial launch

5 Huawei eLTE Urban Rail Transport Solution: Innovation & Convergence; Changing the Future of Metro Wireless Communication Innovation Mainstream technology, First global launch. Advanced interference prevention technologies in air interface Multi-level QoS algorithms High mobility, and seamless handover algorithms Convergence One network to carry PIS, CCTV, broadband trunking, and CBTC simultaneously Broadband trunking to support simultaneous voice and video dispatching Convergence of broadband trunking and video conferencing Safe Operation Specialized interference prevention technologies Multi-level QoS algorithms High mobility, large coverage, and seamless handover Agile Dispatching Visualized dispatching to ensure real-time incident viewing, command direction to group members Convergence of broadband trunking and video conferencing wtih fast decision-making Convenient Traveling PIS over LTE to support real-time passenger information, and news broadcasts CCTV over LTE to view and control on-site emergencies Telepresence over LTE: telepresence and video conferencing convergence Change

6 Effective Interference Prevention Technologies to Improve Onboard Service Experiences and Driving Safety Safe OperationAgile Dispatch Convenient Traveling Wi-Fi LTE Better LTE channel structure than Wi-Fi LTE: Scheduling based 15k sub-carriers, and 20 Mhz networking Wi-Fi: Scheduling based 20M bandwidth ， 20*7=140M networking LTEWi-Fi Physical layer Pilot detection Fast power control Interleaving MIMO No Link Layer HARQ retransmission Slow power control AMC No Network Layer ICIC CoMP Open loop power control Wi-Fi: no data reception if signal strength < -90 dbm LTE: data reception if signal strength < -130 dbm Mbits/s dBM Systematic anti-interference technologies to achieve 20dB+ gain V.S Wi-Fi Better LTE reception performance than Wi-Fi

7 High Mobility, Seamless Handover to Ensure Service Continuity Wi-Fi: 80 km/h 4 connected vehicle-mounted devices, another in the cell center to ensure service continuity when rrequires reselection 1s to 2s service interruption if more interferences are experienced in handover area LTE: 200 km/h Seamless handover, no data loss, and handover delay < 50 ms Design speed: 200 km/h, ahead of other technologies in the next10 to 15 years. 2 networks for overlapping coverage 2 devices separately access 2 networks Previous Cell Adjacent Cell Core Network X2 Interface Safe OperationAgile Dispatch Convenient Traveling

8 Multi-level QoS to Ensure Reliable Transmission of Key Data Services WiFi ： Contention based QoS algorithms Users accessing to network by free contention, and no absolute user priority About 60% packet loss rate in intra-frequency interference 100% packet loss rate if 2 interference sources, and not meeting metro service requirements LTE: 9-level QoS algorithms Guaranteed service QoS to the highest priority during congestion, for example, CBTC WiFi No user priority CBTC PIS, CCTV Trunking Voice Bandwidth allocation based on service requirements Level 1 Level 2 Level 3 Level 4 CBTC Tunking PIS CCTV Latency: 100 ms Packet loss: Latency: 100 ms Packet loss: Latency: 300 ms Packet loss: Latency: 150ms Packet loss: Safe OperationAgile Dispatch Convenient Traveling

9 Voice, Video, and Data All-in-one to Greatly Improve Dispatching Efficiency User 1 User 2 User 3 Onsite Scenes Video Voice With massive amount of data, convergence of eLTE voice, data, and video enrich dispatching services and improve dispatching efficiency Data Location InfoMobile Office Dispatching Center Safe OperationAgile Dispatch Convenient Traveling

10 Group Call Setup: 300 ms Pre-emptive call: 150 ms Group Members: +∞ Real-time backup, and fault protection Professional Trunking performance to Ensure Agile Dispatching LTE Group 1 Group 2 Group 3 Safe OperationAgile Dispatch Convenient Traveling

11 PIS over LTE: Real-time News, Information Transfer, Online Advertisements, and Convenient Travel Transmission EPC PIS System High bandwidth, low latency, and better performance to match PIS service requirements Real-time news, information transfer, and online advertisements to improve travelling convenience, and increase metro customer revenues Real-time News Information TransferOnline Advertisement Safe Operation Agile Dispatch Convenient Traveling

12 CCTV over LTE: Real-time View and Control of On-site Emergencies High bandwidth, low latency to support HD video, and comprehensive surveillance of station, carriage, and rail, and quickly view and control on-site emergencies LTE Station Rail Carriage Dispatching Center DL 100 Mbits/s, UL 50 Mbits/s Latency < 50 ms Safe Operation Agile Dispatch Convenient Traveling

13 Telepresence over LTE: Quick Decision-making, and improved Dispatching efficiency LTE Video Video Conferencing Room in Dispatching Center Station Dispatching Center Onsite Staff ECV Convergence of eLTE and telepresence enable visualization, quick decision-making, and improve dispatching efficiency Safe Operation Agile Dispatch Convenient Traveling

14 IP Network LTE RRU Switch LTE BBU Station LCD Switch LTE BBU Station LCD Switch LTE BBU Leaky Coaxial Cable or Antenna TAU Track & Train Station LCD Innovative eLTE Solution for Zhengzhou Metro Center Server PIS System Dispatcher OMC Voice & Video Servers eCNS600 LTE RRU

15 PIS CBTC Customized Rail Auxiliaries Comprehensive Cooperation with Rail Transport Partners IOT with CASCO, better performance than WLAN IOT with INSIGMA, full adapatation verification in moving train IOT with Neusoft, Shanghai Zhizhen, better performance Dispatcher for rail transport industry Customized rail industry devices including cab radio and handset

16 Industry Partners Consulting & Desig Partners Partners (100+) Help Customers Succeed Close Cooperation with Partners to Help Customers Succeed

17 Innovation and Convergence: Changing the Future of Metro Wireless Communication Innovation and Convergence Safe Operation, Agile Dispatch, and Convenient Travel

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