1 TETRA ENHANCED DATA SERVICE (TEDS) Dr. M. Nouri Chairman of EPT Working Group 4 (WG4) High Speed Data TEDS COLLOQUIUM

2 Agenda  TETRA Release 2 Terms of Reference.  User Requirements for High Speed Data (HSD).  Technologies for HSD (TAPS and TEDS).  Developments in TEDS Standardisation.  TEDS Technology Solution and Parameters.  Conclusions.

3 Rationale for TETRA Release 2  In a fast moving Telecommunications world to provide TETRA community with emerging wide-band and multi- media services.  To prolong the life cycle of TETRA technology.  To provide an upgrade path to TETRA V+D users.  To provide inter-working with new public mobile networks (2.5G / 3G).  To ensure future proof investment to TETRA users.  Glean benefits of new technology deployments.

4 EP TETRA Revised Terms of Reference approved at Board#28  To provide packet data at much higher speeds than are available in the current standard (10 fold increase).  To select and standardize additional speech codec(s).  To further enhance the TETRA air interface standard.  To produce and/or adopt standards to provide improved TETRA interworking and roaming with GSM, 2.5G/3G networks.  To evolve the TETRA SIM to U-SIM.  To extend the operating range of TETRA.  To ensure full backward compatibility and integration with existing TETRA standards.

5 Two Track Standardisation TETRA RELEASE 2 TAPS TEDS TETRA Advanced Packet Service An Overlay network Based on the E-GPRS technology Standardisation drafting completed Designed for PAMR market TETRA Enhanced Data Service Full Compatibility with TETRA V+D Allows migration from TETRA V+D Standardisation in progress 5 technologies proposed initially Designed for all TETRA market sectors

6 TETRA in 3G Era TETRA Infrastructure Gateway TAPS Access GSM Access Service Nodes Customer Care Billing Network Management UMTS Core Network Transit Layer Network Management TETRA1 +TEDS Access TETRA1 Access 3G Access 2.5G Access

7 TAPS Architecture & Interfaces External Packet Data Networks GSM/ E-GPRS GSM/ E-GPRS TETRA V+D TETRA V+D Gi ISI (Gr) IPI (Gp) Gp Gr TAPS OVERLAY Gi, Gp & Gr: standard interfaces used in E-GPRS networks

8 Developments in TEDS Standardisation  A review of the User Requirements to reflect changing market conditions and resolve conflicting issues.  A TETRA Release 2 User Workshop was jointly organised with WG1 resulting in:  Most applications in early systems will be satisfied with a 50 to 80 kbit/s user rate  Minimum of 50 kbit/s shall be available at the edge of coverage  Adaptive technology and higher data rate should also be provided by the selected technology for future proofing  Need for simultaneous voice and HSD operation with priority for voice if required  1W maximum transmit power for handsets and possibly 3W maximum for vehicular radio.  Technology submissions were revised taking these factors into account.

9 TEDS Technology Solution  In July WG4 reached a consensus on a technology solution.  This was based on a compromise solution agreed by six companies who had submitted technology proposals.  WG4 then raised a Work Plan for the remaining standardisation issues:  Remainder of the physical layer  Higher layer protocols  Adaptive usage of system resources.  This plan makes as much use of existing TETRA V+D standard as possible to ensure backward compatibility (e.g. use of TETRA V+D control channel).

10 Selected Technology Parameters (1)  Multi-carrier platform with TDMA carriers.  Adaptive selection of modulation and coding according to propagation conditions.  Agreed modulation schemes:  4 QAM for efficient links at edge of coverage  16 QAM for moderate speeds  64 QAM for high speed   /4 DQPSK for common control channel  D8PSK for early migration requiring modest increase in speed  Optimised channel coding is under STF 179 work.  Carrier bandwidths: 25, 50, 100 and 150 kHz.

11 Selected Technology Parameters (2)  Pilot symbol used for channel estimation.  Full and half slot sizes:  ms for 25 kHz and possibly 50 kHz with low level modulation,  7.08 ms for higher bandwidth carriers and higher level modulations.  Each QAM carrier is composed of a number of sub- carriers at base-band (8 sub-carriers in 25 kHz).  Expected user bit rates in the region of 30 to 400 kbit/s  TETRA V+D higher layer protocols to be adapted for TEDS.

12 STF Support for TEDS Standardisation  Optimised Channel Coding and Interleaving for TEDS Carriers  TETRA Release 2 TEDS Protocol Adaptation (excluding the Physical Layer)  Adaptive Link Control for TEDS  Use of Multi-media Services in a TEDS System

13 TEDS Standardisation Timeline (2003)

14 Summary  Set of TETRA Release 2 User Requirement Specifications (URS) (mainly for TEDS) has been created by the EPT and TETRA users.  TAPS overlay High Speed Data standardisation has been completed in WG4.  The physical layer technology for TEDS integrated (with TETRA V+D) solution has been selected and work on other areas is well underway.  Four STF support projects have been identified and are in various stages of progress.  TEDS integrated HSD standardisation is currently scheduled for completion by the end of 2003.

15 TETRA Enhanced Data Service Thank You Mehdi Nouri Mobile Radio (Group, Individual, Priority, Emergency, Priority, Emergency,DMO) Mobile Data (Status Massaging,SDTS, Packet Mode, Circuit Mode) MobileTelephony (Full Duplex Voice)

16 Jo Dewaele Chairman EPT Working Group 1 TETRA TEDS COLLOQUIUM User Requirements

17 TETRA 2 High Speed Data (HSD)  Definition  net data rates in excess of 28,8 kbps which is the current capability of TETRA 1  Objective  provide high speed packet data at speeds approximately 10 times that available in existing TETRA  Conflicting requirements  pressing market needs for high-speed packet data within short timescales  integrated solution with existing TETRA services  Two streams:  TAPS: TETRA Advanced Packet Service  TEDS: TETRA Enhanced Data Service

18 TAPS: Coverage Analysis  (E)GPRS  up to 473kbps/carrier (200kHz) or 60kbps/timeslot  Number of basestations to cover km 2 (Belgium)

19 TEDS: TETRA Enhanced Data Service  Requirements evolution  Market Questionnaire to EPT and TETRA MoU  ETSI/TETRA MoU High Speed Data Workshop  Documents  User Requirement Specification  HSD Workshop Report  Marketing Selection Criteria

20 TEDS: User Requirement Specification  Requirements  data rates: high  capacity: high  integration with TETRA Release 1 V+D: high  availability of HSD: early  Constraints  compatibility with TETRA Release 1 V+D  field upgrade capability with minimal disruption  minimal need for new base station sites  minimal need for new frequency spectrum

21 TEDS: Coverage Analysis

22 TEDS: HSD Workshop conclusion  WG4 working assumptions:  deploy HSD on existing TETRA 1 base stations  maximum terminal power 1W for handportable, 3 W for mobile  trade off between spectrum, data rates and range is needed  realistic target data rates are in the range of kbit/s  extra spectrum is essential

23 TEDS: Coverage Analysis

24 TEDS: Marketing Selection Criteria  Mandatory Criteria  Backward compatibility  Service flexibility  Security compatibility  As marketable as Release 1  Other important Criteria  Ease of Infrastructure upgrade  Minimal need for new base station sites  Flexible user net data rate/performance  Efficient and flexible use of spectrum resources  Mobile Station provision ease

25 TETRA TEDS COLLOQUIUM User Requirements Thank You Jo Dewaele