Evolution towards TETRA+LTE

Transcription

1 Critical Communications Evolution towards TETRA+LTE El Futuro De Las Redes De Parque Tecnológico de Bizkaia, Junio 2014

2 Why broadband for PMR users? Existing PMR technologies cannot deliver enough data throughput to meet the upcoming demands from professional radio users General-purpose VIDEO TRANSMISSION Real-time transmission Low latency Medium to high quality PUBLIC SAFETY operational applications Vehicle registration plate reader Fingerprint reader Facial recognition FIRST RESPONDERS exchanging critical information Maps & building plans access Multi-vital sign data, real-time patient status exchange Environmental sensors With no doubt, REAL-TIME VIDEO TRANSMISSION is the main reason for broadband in PMR. 2

3 CRITICAL COMMUNICATIONS What makes PMR world different? Very fast call set-up System availability: Anytime, anywhere Congestion control: Services, access priorities, pre-emption Group (voice) communications Mobility (true seamless handover) Encrypted communications Customized devices (robustness, reliability) Direct Mode Operation (non-infrastructure modes) Interconnection with other systems / technologies Large cell coverage. Same level of service everywhere within the cell 3

4 Built from a different perspective COMMERCIAL NETWORKS Large coverage, many users / km2. Main focus is business. Maximize ROI (Return On Investment). Full time availability is DESIRABLE. Best effort strategy. CRITICAL COMMS SYSTEMS Full coverage, fewer users / km2. Main focus is service. Adequate investment to needs. Full time availability is a MUST. Full service strategy. Both networks may share the technology, but do not share objectives and strategies 4

5 Four generations of radio communication standards: Wireless technology evolution 1G 2G 3G IMT G IMT-Advanced TACS AMPS GSM CDMA- One GPRS /EDGE CDMA UMTS (3GPP R99) 1xEVDO HSPA (3GPP R6 & R7) LTE (3GPP R8 & R9) LTE-Advanced (3GPP R10) WiMAX IEEE d Mobile WiMAX IEEE e WirelessMAN Advanced IEEE m MPT TETRA TEDS 5

6 PMR vs 4G: protocol stacks PMR (TETRA) 4G (LTE / WiMAX) Ideal BroadbandPMR VOICE DATA USER SERV & APP VOICE IP DATA SERVICES (TETRA) IP DATA SERVICES (PMR) MAC MAC MAC (4G family) UHF Radio Gigahertz Radio UHF Radio UHF Radio Built for voice & messages from scratch. Services are part of the protocol stack. Priority and pre-emption are native attributes for all communications. Focused in best coverage: UHF frequency bands. Built for generic data communications. Newest standards cover QoS. Standard mechanisms over IP, protocol overhead. Network tuned to maximize capacity. No management for congestion control. Services and applications are not part of the standard. >>> Interoperability at service level? Native protocol for voice and messages. Standardized services layer. PMR-like QoS definition. Management for congestion control. UHF frequency bands. NOT YET AVAILABLE 6

7 LTE as de facto future PMR standard Technological reasons State-of-the-art radio interface. First 3GPP worldwide standard for every region. Widely adopted by telecom operators. Monetary reasons The industry avoids to define a new Broadband PMR standard from scratch. Users are confident in commercial mass market to lower the price of terminals. Strong early adopters January 2011: US Government decision to adopt LTE technology to meet future Public Safety operational needs. 7

8 Regulatory aspects: Spectrum Spain 5+5 MHz allocated for Public Safety (PSS) purposes in 450 MHz band. Availability of spectrum from February 2013, limited to big cities, where this spectrum is currently assigned to narrowband PMR users (30% occupancy). This frequency band will be fully intended for PSS services from Europe In general, waiting for the World Radio Conference (WRC) in Nov 2015 and the results of the second Digital Dividend. Meanwhile in some countries, like France, frequencies in 400 MHz band are assigned to PSS. North America In USA, Band 14 (10+10 MHz spectrum) is assigned for the National Broadband network for First Responders (FirstNet). Spectrum allocated from Now in process of deploying / demonstrating first small systems. Asia & UAE Trend focuses to 700 MHz band. Australia Harmonizing efforts to use 800 MHz spectrum. Brazil Progress towards 700 MHz band. Latin America No decision about harmonized spectrum. It is likely to follow the USA model. 8

9 Why TETRA and LTE? A proposal from the PMR industry addressing needs and expectations from the users.

10 TETRA+LTE: a winning combination TETRA Radio Access Managing the pure PMR critical services: Voice and short messages. Acting as control channel for the integrated network. Can still offer data services by using multislot operation. Full availability in case of 3G/4G network failure or congestion. Full coverage. Non-infrastructure operation modes. + LTE Radio Access Integrated network management Services coordination. Acting as an overlay network for the non-critical data-demanding services (mainly video) with additional advanced management features based on TETRA. In privately owned LTE networks, data services can become critical by adding a PMR-grade layer to the LTE technology. Unified network management. End-to-end applications (technology transparent) at user interface level. Gateways to other radio access and fixed systems. 10

11 TETRA Radio Access Infrastructure LTE Radio Access Infrastructure CAD Infrastructure Interface Inter-system Gateways Application Servers Voice HMI Video HMI WEB Client Client GPS Navigation Other Applications Inter-system Gateways Control Center Dispatcher GIS Video Supervisor WEB Client Client Other Applications enebula TETRA + LTE: overall architecture CAD Infrastructure Interface Network Management System Communications Manager Communications Manager Communications Manager TETRA Radio Interface LTE Radio Interface User Device... User Device (n) Infrastructure Equipment Computer-Aided Dispatch / Command & Control Equipment 11

12 TETRA + LTE: a migration path (i) Coordination Centre TETRA network Ad-hoc Quick Deployment NEBULA TETRA Central Node & App Servers TETRA Network Management System 12

13 TETRA + LTE: a migration path (ii) Coordination Centre TETRA+LTE network Ad-hoc Quick Deployment enebula TETRA+LTE Central Node & App Servers TETRA+LTE Network Management System 13

14 Upgrading from NEBULA to enebula Radio Access To install LTE base stations. Number of sites required will depend on minimum uplink throughput expected at the cell coverage edge: Number of sites could be increased 2x -6x in order to allow several Mbps on the UL. Central Node To increase computing capacity to serve LTE functionality requirements: To keep same ATCA hardware architecture for TETRA and LTE central node entities. To increment number of ATCA cards for running TETRA and LTE protocol stack upper entities. For existing small networks, some additional ATCA hardware may be required. Other subsystems To deploy LTE and TETRA+LTE user equipment (personal and vehicular devices). To upgrade app software to support new features: NMS, coordination centre, vehicle consoles and user equipment. To upgrade backhaul / radio links where needed: Mbps are typically required by each LTE base station. 14

15 Benefits of a TETRA + LTE solution Best of both worlds Flexible model Controlled investment Unified user experience Future-proof TETRA brings the PMR-grade service (network availability, congestion control). LTE contributes with the maximum throughput. Solution can be adapted according to business exploitation model: Shared/public or private networks. Possibilities to get broadband spectrum in different frequency bands. Reduces the required CAPEX and protects the existing investments in narrowband (TETRA). User does not take care about the technology itself, but about the services and applications. Ready for future enhancements in technology and services. Also a mid-step towards a long-term future Broadband PMR standard. Teltronic has developed a 100% owned LTE design that natively integrated with its TETRA infrastructure: the new evolved NEBULA. Therefore both TETRA and LTE benefits of a robustness design exclusively focused in PMR. Fully scalable architecture from rapid deployment units to large national networks. An owned design enables full customization of the solution for vertical markets. Optimizes CAPEX when deployed jointly with TETRA: same cabinets, shared power supply, controllers, etc. Optimizes OPEX: common spares for both technologies, same design minimizes training. enebula provides a single and integrated network concept. TETRA services can be provided over LTE to interconnect TETRA and LTE user devices. Solutions and apps that get the most of your LTE network. Enables a soft investment in LTE technology that can be deployed gradually. Teltronic offers a progressive migration path to TETRA+LTE considering future investments in TETRA together with a scalable evolution towards LTE. 15

16 Final highlights TETRA and LTE will co-exist for long time LTE will not start replacing TETRA at least in a decade. Early adopters could start using commercial LTE networks for ease to access the broadband experience. An affordable migration path towards TETRA+LTE is the key to allow the PMR users to begin to gradually integrate broadband services in their operational procedures with full warranties. The road towards a future pure PMR LTE LTE R8 does not include PMR attributes. Further 3GPP releases should cover this gap in the long term. This is an opportunity for the PMR industry to offer specific features that differentiate their solutions from commercial LTE. Every market segment will probably require product customization at service and application level. It is time to listen to our customers to anticipate their needs. Broadband spectrum for PMR: Attention required! Current discussion seems to be more focused in a business perspective (commercial networks) more than a service perspective (professional networks). Ongoing decisions can seriously affect to the PMR community (users and industry). 16

17 Gracias - Eskerrik asko - Thank you! Alfredo Calderón Chief Technology Officer acalderon@teltronic.es