Transforming Surface Transport’s Radio System - Transport for London’s Telecommunications Strategy Dr Dimitris Kaltakis – Senior Product Manager and Design Authority 1
Background • The radio system is comprised of 10 radio sites and provides mobile radio coverage within the Greater London Area on frequencies licensed from OFCOM to TfL. • There are a total of 66 traffic channels distributed to those 10 sites with majority allocated to dominant sites. • The current analogue PMR solution was designed to provide voice radio communication for up to 35,000 calls per day. • Peak daily calls are now averaging 68,000 with snow/industrial action/major events seeing over 74,000 calls per day. Latent demand for at least 25% more capacity as indicated by attempts to contact buses. • During peak times, the number of calls results in call queuing of unacceptable lengths. • The amount of time Bus controllers now spend queuing during busy hours has more than tripled from under 2 hours in 2011 and 4 and a half during the first half of 2015 to more than six hours. 2
Objectives and Scope Objectives In Scope: • Provision of a radio system that will address • Radio equipment at existing radio sites the capacity issues and scale for the forecast growth in London’s Bus Fleet over the next • Central radio system components 10years, thus helping Surface Transport provide a quality bus network. • Bus radios • Provision of a resilient, reliable, modern, and cost efficient communications method between buses, bus operators and emergency Not in scope responders through the upgrade of aging radio system. • The bus antennas • Develop a Surface Radio Bridge to enable a • The radio equipment at the existing base sites that can be hand portable radio service for the areas of reused London where a direct Private Mobile Radio (PMR) service is required to deal with • The AVL system and interfaces as well as AVL bus incidents and major events. components 3
Technology and Challenges Challenges Why not LTE now? • Redundancy and fall-back mechanisms/access � Time under heavy usage • System already at capacity Data costs • � Cost • No suitable commercial offering � Quality What DMR Tier III does: • Not impact system performance during transition Maintain current functionality, high reliability and • low running costs and support existing AVL � Migration interface. Safety critical 24/7 system • Increased data capabilities. • • In-Frequency migration • Generic and open interfaces for the bus radio. • Free movement of buses between depots and • Ability to support an all IP connection within the within a service area vehicle. • Route re-lets Dynamic Network management and optimisation • • Night routes reports and KPIs. • A low cost private radio network for critical voice communication and fallback data communication that other TfL users can bolt onto. 4
Migration/Implementation strategy Key is to de-risk the migration as much as possible • Comprehensive test regime • Factory acceptance Pilot phases • • Critical Mass • Full rollout Dual mode base stations and dual mode bus radios: Provides fall back mechanisms • • Allows us to transition the fleet with the least risk • Allows us to progress with the speed of rollout that we require Analogue Base Analogue Base MPT Classic Node MPT Classic Node Stations Buses Stations Inter installed MPT IP Node MPT IP Node Node with dual Dual mode mode Gateway base radios stations DMR Node 5
Our Objectives and Plans The Data Network and Telecommunications vision The Data Network and Telecommunications vision “The timely delivery, on a service provision basis, of well managed, cost-efficient and fit-for-purpose data network and telecommunications services, which satisfy TfL’s current and foreseeable future needs” The Objectives The Objectives The vision will be realised through four key objectives: 1. A reduction in the total cost of ownership of data network and telecommunications services 2. The provision of fit-for-purpose services which deliver what projects and programmes specify they need, where and when they need it 3. The establishment of best-in-class service management capabilities to oversee the ongoing delivery of the services 4. The implementation of robust and effective governance and control process to ensure optimal benefits realisation Over-The-Air Voice Services Over-The-Air Voice Services Provide supportable and fit-for-purpose over-the-air voice services, employing the minimum number of different technologies and platforms, and adopting long-term industry standards where possible / cost effective to do so Cellular Voice & Data Services Cellular Voice & Data Services Deliver a strategic cellular voice and data agreement which is able to satisfy both our user and machine-to-machine requirements in a cost effective manner 6
The End-State Vision • A single logical TfL network comprising multiple integrated wired TOC Office and wireless networks that: Locations Networks • is a hybrid network based on the most effective blend of Connectivity to street assets outsourced and owned networks; The TfL Network • is available for use by all TfL Modes, where it is needed and Owned Network when it is needed; Bought-In Network Services Services • provides the required levels of physical and logical security, Signal capacity, availability and resilience to support TfL’s needs; Access Voice and data radiating infrastructure (public & private) • is based on standard technologies and design patterns; Signal and train control systems • is scalable and able to cost-effectively cater for known and likely Train Station Public future requirements; Access Networks Networks WiFi • is capable of supporting public requirements; and PA CCTV ASSET PA CCTV ASSET • is supported by best-in-class service management capabilities and product governance. 7
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