Tetra architecture and interfaces
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TETRA ARCHITECTURE AND INTERFACES. Dr. M. Nouri Marconi Mobile. Agenda. 1 . TETRA 1 Architecture and Standard Interfaces 2. Description of Individual Interface Network Aspects and Scenarios Services Protocols 3. TETRA Standard Gateways Features

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Tetra architecture and interfaces

TETRA ARCHITECTURE AND INTERFACES

Dr. M. Nouri

Marconi Mobile


Agenda

Agenda

1. TETRA 1 Architecture and Standard Interfaces

2. Description of Individual Interface

  • Network Aspects and Scenarios

  • Services

  • Protocols

    3. TETRA Standard Gateways

  • Features

    4. TETRA Release 2 Architecture and Interfaces

    5. Conclusions


Typical tetra network

Typical TETRA Network

1b

Central

Network

Management

3

1a

BS

BS

TETRA

Infrastructure

NMS

5

Another

TETRA

Network

2

.

BS

BS

BS

BS

6

Remote Line Station (Despatcher)

4

PSTN, ISDN

PDN


Air interface ai variants

Air Interface (AI) Variants

DMO

AIR I/F

TMO

AIR I/F

PEI


Tm v d air interface

V

D

D

D

V

TM V+D Air Interface

Air Interface

TETRA

Infrastructure

TDMA

FRAME

V

Uplink

TS 1

TS 2

V

TS 3

V

Downlink

TS 4

D

TS = Time Slot


Tm v d ai services

TM V+D AI Services

  • Speech

  • Data

    • Circuit mode

    • Packet mode

    • Short data service

  • Supplementary Services

  • Call Control

  • Mobility Management

  • Security Services


Tm v d ai data rate capacities kbit s

BANDWIDTH ON DEMAND

Numberof

1

2

3

4

Timeslots

No

21.6

7.2

14.4

28.8

Protection

Low

4.8

9.6

14.4

19.2

Protection

High

2.4

4.8

7.2

9.6

Protection

TM V+D AI Data Rate Capacities (kbit/s)


Tm v d ai protocol stack

TM V+D AI Protocol Stack

CONTROL PLANE

USER PLANE

  • Speech

  • Circuit Mode

  • Data

  • Mobility

  • Management

  • Packet

  • Data

  • Call Control

  • Short Data

  • Supplementary

  • Services

MM

CMCE

PD

Layer 3

Mobile/Base Link Control Entity

Logical Link Control

Layer 2

Medium Access Control

Physical Layer

Layer 1


Direct mode ai scenarios

Direct Mode AI Scenarios

2. GROUP CALL

1. INDIVIDUAL CALL

NETWORK

NETWORK

AUTHORIZING

MOBILE STATION

C

1

2

ABC

DE

GHI

4

6

MNO

PQR

9

V

XYZ

3. DUAL WATCH

4. MANAGED DIRECT MODE


Direct mode ai scenarios contd

Direct Mode AI Scenarios (contd.)

REPEATER

GATEWAY

NETWORK

6. DIRECT MODE GATEWAY

5. DIRECT MODE REPEATER

REP/GW/

AUTHORIZING

MOBILE

REP/GW

NETWORK

NETWORK

7. DIRECT MODE REPEATER/ GATEWAY

8. MANAGED REPEATER/ GATEWAY


Dm ai protocol stack

DM AI Protocol Stack

CONTROL PLANE

USER PLANE

Circuit Mode Data

Call Control

Intrinsic Services

Speech

Short Data

Direct Mode Call Control

Layer 3

Data Link Layer

Layer 2

Physical Layer

Layer 1


Services supported by isi

Services Supported by ISI

To Other

Regional SCN

To other

TETRA Networks

ISI

To other

Regional

SCN

Local

SCN: Switching Control Node

NMS: Network Management System

BS: Base Station


Example isi group call configuration

ISI

ISI

Example: ISI Group Call Configuration

CONTROLLING AND

PARTICIPATING

NETWORK

REQUESTING AND

PARTICIPATING

NETWORK

PARTICIPATING NETWORK


Isi protocol stack

Specific TETRA Operation

ISI : Protocol Stack

TETRA INFRASTRUCTURE 1

TETRA

INFRASTRUCTURE 2

ton

TETRA ANF

TETRA ANF

Specific TETRA Operation

c TETRA operation

ISI

ITU-T Rec. X.229

ITU-T Rec. X.229

ISO/IEC 11582

ISO/IEC 11582

ISO/IEC 11572

ISO/IEC 11572

ETS 300 402-1 and 2

ETS 300 402-1 and 2

Layer 1

Layer 1

PRIVATE SIGNALLING SYSTEM 1 (PSS1) USED IN ISI STANDARD


Ip inter working interface

Inter-Network Backbone

ISI

IP Inter-working Interface

Host

Packet Data Network

IPI

Gp

Gi

Gi

GGSN

BG

BG

GGSN

Gn

Gn

Internal Backbone

Internal Backbone

HDB

HDB

VDB

VDB

TETRA

Infrastructure 1

TETRA

Infrastructure 2


Peripheral equipment interface pei

Peripheral Equipment Interface (PEI)

MT2

TE2

TETRA

INFRASTRUCTURE

PEI


Pei protocol layers

PEI Protocol Layers

APPLICATIONS

TCP

UDP

IP

TNP1

PEI

DOMAIN

PPP

V. 24/V. 28

TO MOBILE STATION


Standard api and applications

Standard API and Applications

Applications

Internet

Access

AVL

Telemetry

WAP

Standard API

Proprietary

IP Packet

Data

Circuit

Mode Data

Bearer Service

SDS

TETRA ADAPTATION

LAYER

Network


Tetra as an ip network

TETRA Infrastructure

TETRA as an IP Network

Content

Provider

Network Management

Center

WAP

Terminal

IP

WAP

GW

Internet

LAN

Server

Database

IP

IP

Corporate

Intranet

IP Switching/

RoutingNetwork

IP

IP

GPS

IP

Bluetooth

Control

Room

Server

IP

IP

Voice/IP

Dispatcher


Line station interface lsi

Line Station Interface (LSI)

LINE

STATION

TETRAINFRASTRUCTURE

BS

BS

ISDN

LSI

BS

BS

BS

BS

BS

Connectivity Options

LSI

  • Basic Rate ISDN

  • Primary Rate ISDN

  • 64 kbit Leased Line


Tetra architecture and interfaces

Central Network Management Interface

TETRA 1

ISI

TETRA 2

LNM

LNM

ISI

ISI

TETRA 3

LNM

  • Performance Management

  • Fault or Maintenance Management

  • Subscriber Management

  • Accounting Management

  • Security Management

CNM


Pstn gateway

PSTN Gateway

PSTNGW

PSTN


Isdn gateway

ISDN Gateway

2B+D

30B+2D

ISDNGW

ISDN


Pdn gateway

PDN Gateway

LAN

Server

Database

X.25

X.75

PDNGW

PDN


What next for tetra

What next for TETRA?

TETRA RELEASE 2

TAPS

TEDS

  • TETRA Enhanced Data Service

  • Full Compatibility with TETRA 1

  • Allows migration from TETRA 1

  • Standardisation in progress

  • 5 technologies proposed

  • Designed for all TETRA market

  • sectors

  • TETRA Advanced Packet Service

  • An Overlay network

  • Based on the EDGE technology

  • Standardisation drafting completed

  • Designed for PAMR market


Taps architecture interfaces

TETRA

V+D

TETRA

V+D

TAPS Architecture & Interfaces

External Packet Data Networks

Gi

Gi

Gi

IPI

(Gp)

GSM/

E-GPRS

TAPS OVERLAY

Gp

ISI

(Gr)

Gr

Gi, Gp & Gr: standard interfaces

used in E-GPRS networks


Tetra in 3g era

TETRA in 3G Era

Network

Management

Service

Nodes

Customer

Care Billing

UMTS Core Network

Transit Layer

Network

Management

TETRA1

Access

Gateway

TETRA

Infrastructure

UMTS

Access

GSM

Access

TAPS

Access

TETRA1

+TEDS

Access


Conclusions

Conclusions

TETRA 1 Architectures and Interfaces allow:

  • Spectrally-efficient feature rich communication

  • Choice of trunked or direct modes

  • Interoperability between different TETRA networks

  • Multimedia services, Internet access and mobile

    office capability

  • Extensive data applications capability

  • Inter-working with public networks

  • High level of security

    TETRA Release 2 provides the future upgradability and high

    speeds required in the 3G era.


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