Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
What is the Space of PMR/PMAR in the era of NGN? ICT Workshop Brasília Nov.10, 2006 NGN, FMC, IMS, 3G … Assume all are implemented Is there room for another kind of network? What customer need could drive it? ICT Workshop 2006 11 More and more Critical Incidents Critical incidents impact everyone Public pressure necessitates a move from independent operations of respondents to interdependent collaboration “No man, woman or child should lose his or her life because public safety officials cannot talk to one another.” The Public Safety Wireless Network ICT Workshop 2006 11 Who are the Public Safety Responders Police Fire Emergency Medical Services Rescue Civil Defense Public Utilities – Electricity, Gas, Water Essential Transport ICT Workshop 2006 11 Communication Requirements of Emergency Responders Group Calls Operations / Dispatch Centers “instantaneous connection”`< 0,5 s Pre-Emptive (Emergency ) Call Priority Levels Encryption Interoperability wiht Autonomy Multiple Resilience Levels – Redundancy – Site Operation – Direct Mode ICT Workshop 2006 11 Commercial Network Suitability National Task Force on Interoperability says.. “Public safety officials cannot depend on commercial systems that can be overloaded and unavailable” ICT Workshop 2006 11 True Interoperability Enables instant communications among multiple responders and different agencies ICT Workshop 2006 11 True Interoperability “True Interoperability allows public safety personnel in different agencies to communicate with each other on demand in real time” --Public Safety Wireless Network Consequences More coordination regardless of network type or agency affiliation Seamless access to voice and data intelligence Coordinated response can happen in seconds, not hours or minutes ICT Workshop 2006 11 Coverage Designed to user needs; not profit based Extensive planning Additional capability beyond traditional network coverage “…I think the most salient point [of having your own system] is the ability to maintain a service level without a profit motive” Steve Jennings, CIO Harris County, TX ICT Workshop 2006 11 A Critical Network Provides the availability, information security and reliability that responders require ICT Workshop 2006 11 Critical Networks Critical Networks are the Lifeline whenever lives or outcomes depend on communications Reliable Always available Redundant Priority access at all times ICT Workshop 2006 11 The TETRA Standard – ETSI developed standard – Digital benchmark for wireless communication networks – Currently operating in 77 countries – Supported by Schengen Group of Public Safety – Supplied by many providers (multiple subscriber and infrastructure vendors) ICT Workshop 2006 11 The TETRA Standard ENCRYPTION TELEPHONY Full Duplex Packet Data Data Transmission fast and reliable TWO-WAY RADIO Group and Individual Calls, emergency calls, priority levels, DMO ICT Workshop 2006 11 Strong multi vendor support High capacity - ideal for shared networks Efficient use of spectrum Longevity of investment – 20 years + – Ongoing enhancements – New applications on installed infrastructure Data Applications Multiple & High Levels of Security Multiple levels of Resilience TETRA TDMA principle TDMA (Time Division Multiple Access) 4 channels per 25 kHz carrier 12 4 channels 4 calls per 25 kHz carrier (data or voice) 34 Voice and Data can be transmitted simultaneously 36 kbits/s gross bit rate Carrier Four user channels multiplexed into one 25 kHz carrier SPECTRUM EFFICIENCY ICT Workshop 2006 11 Typical TETRA Network 1b Interfaces External Network Management 3 1a BS BS TETRA Infrastructure NMS BS BS BS BS 6 2 5 Control Room ICT Workshop 2006 11 PSTN, ISDN PDN 4 Line Station (Despatcher) .Another TETRA Network Services Voice Services Fast call set-up Individual (one-to-one) calls Express calls (push and talk) Group communication – – – – – group calls scanning of groups dynamic regrouping group area broadcast groups Emergency calls Direct mode ICT Workshop 2006 11 Voice Dispatch Services Group monitoring & communication Joining groups Preemptive speech item Group member list Dynamic regrouping Broadcast group. Data Services Status service Short Data Service, SDS IP packet data Circuit mode data The TETRA Association Formed in 1994 Promote the ETSI TETRA standard world-wide Achieve Harmonised Spectrum in Europe – 380-400MHz – 410-430MHz – 870-920MHz Encourage an open and competitive market ICT Workshop 2006 11 TETRA Association – Some Members ICT Workshop 2006 11 Open and competitive markets Fully compatible equipment Interoperability process created Independent test house Certification process Fully supported by industry ICT Workshop 2006 11 The future of TETRA Special Working Group formed – To consider future user needs – To ensure TETRA remains relevant in the coming decade New Codecs Air Interface enhancements Range extension High speed data ICT Workshop 2006 11 Q&A ICT Workshop 2006 11 Muito Obrigado! Bruno Nowak (11) 3847-3252 [email protected]