TETRA over

ETHERNET / IP Solution

Ignacio CallenDeputy Sales DirectorTELTRONIC S.A.U.

1.- INTRODUCTION

Since 1974 dedicated to the design and manufacturing of professional radio communication equipment and systems.

Since 1996, Teltronic belongs to the IBV Corporation.

IBV Corporation is owned 50% by the BBVA bank and 50% by the

power utility IBERDROLA Annual turnover US $1,2 Billion10672 employees

IBV Corporationfigures (year 2003)

Introduction

teltronic, 2004. all rights reserved

IBV Corporation

IBV CorporationIBV Corporation

Socintec 93,1%Socintec 93,1%

GUP 55%GUP 55%

Azertia 100%Azertia 100%

Landata 100%Landata 100% Autocoa 91,68%Autocoa 91,68%

Rymsa 65,99%Rymsa 65,99%Gamesa 31,78%Gamesa 31,78%

Teltronic 100%Teltronic 100%

Elbasa 100%Elbasa 100%

GH 78,52%GH 78,52%

Mattio 100%Mattio 100%

SERVICES INFO.TECH. NEW TECH. ELECTRONICS E-BUSINESS

Shopnet 33,4%Moddo 24,2%MobileChannelEvidentYdiloWorkcenterI-networkFondos

Shopnet 33,4%Moddo 24,2%MobileChannelEvidentYdiloWorkcenterI-networkFondos

IC Móviles 100%IC Móviles 100%

General Data

Headquarters in Zaragoza (Spain)

Factory: 8000m2.Multilayer PCB technology.SMT manufacturing with optical centring and automatic testing.Production Capacity: 45.000 terminals per year

teltronic, 2004. all rights reserved

Frequency bands:350-370 MHz / 380-400MHz / 410-430MHz 450-470MHz / 806-870 MHz

• TETRA Infrastructure (Nebula). • Mobile terminals with capability of incorporating internal GPS or GSM

modules.• TETRA Dispatchers.• Special Control Units for motorbikes / trains.• Command & Control Centers

Products TETRA

TETRA Portfolio in the market

teltronic, 2004. all rights reserved

2.- TETRA over ETHERNET / IP

TETRA over Ethernet / IP1.- Different Tetra frames sent through the IP networks (I).

• Communications between the TBS and SwMI can be shared as three planes:

• C-Plane: Tetra Control Plane.(Allows call establishment, Send SDS, Send Status,…,

in fact all Tetra application actions.)• U-Plane: Tetra User Plane.

(Codec ACELP Tetra voice).• M-Plane: Maintenance Plane.

(Allows the Network owner access to the Tetra system with the standard IP network tools for monitoring)

TETRA over Ethernet / IP1.- Different Tetra frames sent through the IP networks (II).

Ethernet SWITCH

Ethernet SWITCH

Ethernet SWITCH

Ethernet SWITCH

SwMI

SwMI

IP NetworkIP Network

TBS1TBS1

TBS2TBS2

Ethernet SWITCH

Ethernet SWITCH

M-PlaneM-Plane

U-PlaneU-Plane

C-PlaneC-Plane

IP NetworkIP Network

TETRA Frames in NEBULA

Ethernet

TUP

IP

UDP TCP

HTTP TelnetNTL

U-PLANE C-PLANE

FTPSNMP NTL

L3

UDP

M-PLANE

M&CMaintenance & Control

USER PLANE:• Voice calls

• Circuit data

MAINTENANCE Plane• Software Upgrade• Configuration• Monitoring

CONTROL Plane• Tetra control

signalling route• Packet Data• Status / SDS

TETRA over Ethernet / IP2.- Synchronous links working together with asynchronous networks

• Most communication networks use Synchronised Links, so we have to think of using these links.

• Routers are needed for connecting the node with the remote sites by synchronised links.

IP Network 1

Synchronised

Link as E1TBS3TBS3TBS1TBS1 TBS2TBS2

Ethernet SWITCHES

Ethernet SWITCHESEthernet SWITCHES

Ethernet SWITCHES

IP Network 2

Router Router

SwMISwMI

TETRA over Ethernet / IP3.- Aspects of TBS working over IP networks

If we want to connect the TBS over IP Backbone we need to assume the following conditions:

• TBS has to have implemented all Tetra LMAC inside and it is recommended to have all Tetra Layer 2.

•LMAC is synchronised on the Air Interface, so it is not possible to be asynchronous through IP Networks.

•All Tetra Layer 2 is involved in low level Tetra handshake, so it is interesting to be implemented inside the TBS this Layer to minimise the timing.

TETRA over Ethernet / IPAll TETRA Layer 2 is implemented inside NEBULA TBS

LAYER 3

LAYER 2

Maintenance &

Control

LMAC

TMV-SAP

TBS

CMCECircuit Mode Control Entity

BLE Base Link Entity

TMB-SAPTMA-SAP TMC-SAP

Maint/ControlLLC

ETHERNET

MMMobility

Management

SNDCP (PDP) IPSubNetwork Dependent Convergence Protocol

UMAC

Physical LayerHARDWARE RF

(C-M-U) PLANE

TMD-SAP

TETRA over Ethernet / IPTBS must perform its own synchonization system

Ethernet SWITCH

Ethernet SWITCH

Ethernet SWITCH

Ethernet SWITCH

SwMISwMI

IP NetworkIP Network

TBS1TBS1

TBS2TBS2

Ethernet SWITCH

Ethernet SWITCH IP Network

IP Network

TETRA over Ethernet / IP4.- Routing and switching between different elements• New concept is introduced in this type of Networks. There is not a

central matrix present where all communications are switched, as in the case of hardware circuit matrix.

• Now the packets are sent through the IP backbone to the destination IP address, so for this reason it is not necessary to go through only one centralised element.

• Routing concept takes place when the packets sent by a Site are going to the Node. It is necessary to assign different IP subnetworks for Node and Sites.

• Switching takes place when the packets are directly sent to a destination address through different networking elements.

TETRA over Ethernet / IP5.- Cases over different IP networks (I)

It is possible to use two different standard Network types to transport Tetra information:

•Layer 2 Networks. Ethernet Level, (usually small Networks or in the same physical area, like Airports).

• VLAN.• WLAN.• LAN.• Elements with Bridging capabilities.

•Layer 3 Networks. IP Level, (Large Networks, like corporate governments Networks).

• VPN.• Elements with Routing capabilities.

TETRA over Ethernet / IP5.- Cases over different IP networks (II)

CITY B

TBS

Communications Building

CITY A

Government LAN

IP NetworkIP Network

Wireless LAN

TETRA SYSTEM

TETRA over Ethernet / IP5.- Cases over different IP networks (III)Practical Case: Two Routers using the IRB (Integrated Routing and

Bridging) capability.

ROUTER “B” CISCO 2600

ROUTER “A” CISCO 1600WAN Link between CISCOsFRAME RELAY with 2 DLCI:

64 Kbps for IP Tetra Network1976 Kbps for GovermentEthernet Level 3 (IP)

Corporative Network Connection

Port 0 Cisco. IP: 40.0.0.2

Ethernet Level 2 (MAC)Port 1 Cisco

Ethernet Level 2 (MAC)Port 1 Cisco

SWITCH MAINTENANCE PC

SwMI

TBS1TBS1

TETRA over Ethernet / IP6.- IP Networks as backbone advantages

• Use the corporate IP Networks to transport the Tetra signalling between the TBS to the SCN.The customer does not spend more money in install synchronous Links.

• Only 64kbps per carrier needed.• Easy maintenance with standard tools to manage the Network

properly.• High redundancy achieved thanks to the Ethernet

connectivity.

TETRA over Ethernet / IP7.- Security in IP based networks

• IP Security is one of the main problems when we talk about the IP Networks, because….

•According to a Forrester Research, 60% of attacks are through Internet remote access.

•But, IP Backbone, should never be connected to the global Network.

•Only the Network Management System could be connected to other Networks, but access shall be protected.

3.- ADVANTAGES OF ETHERNET / IP BASED

TETRA NETWORKS

Advantages of ETHERNET/IP based TETRA networks

1.- Compare alternative infrastructure design

Features Ethernet / IP CircuitsBackbone type Ethernet Switch Circuit MatrixNetwork Dimension Full scalability Matrix size dependentTransport and maintenance TCP/UDP, FTP, HTTP, Telnet Proprietary protocolsTimings Voice Packet 7.2 us Voice Packet 6.75 msSynchronisation Requirements Ethernet is Asynchronous Circuit Systems are SynchronousGateways Most of interfaces to IP Dedicated interface development

Advantages of ETHERNET/IP based TETRA networks

1.- Compare alternative infrastructure design

SCN (Switching Control Node) SBS (Site Base Station)

CNC (Central Node Controller) SNI (Site Node Interface) BSR (Base Station Repeater)

Advantages of ETHERNET/IP based TETRA networks

2.- Reliability and resilience factors:

• Total Redundancy. All paths and elements can be duplicated.

• Easy to solve degraded modes.

• Higher Security Levels inside IP world.

• Non Synchronisation, Non timing critical system.

• All modules are intelligent. Distributed Packet Switching Matrix.

Advantages of ETHERNET/IP based TETRA networks

3.- Data Transmission and Management Transmission characteristics

• All data is over Ethernet / IP.

• Transmission: LAN devices can be used to carry the signals:

–Switches / Bridges / Routers...

–Over WLAN, VLAN, MPLS, UTI...

• Management over standard IP services :

–Different planes are defined to perform different needs.

Advantages of ETHERNET/IP based TETRA networks

SUMMARY (I):

• With an IP backbone it is possible to build a Tetra system, Tetra over IP

• Using Standard protocols–UDP/TCP/IP, FTP, Telnet, HTTP, SNMP

• Using Standard Elements–Switches, Bridges,Routers

• Providing standard network connectivity–LAN,VLAN,WLAN,VPN

• Considering –BTS synchronisation

Advantages of ETHERNET/IP based TETRA networks

SUMMARY (II):• Bringing Key Advantages

–Resilience–Bandwidth–Security

• Users advantages:– Network Owners:

• Networking standard systems use: WLAN, LAN connectivity.

• Lower cost for buyers and Lower cost for maintenance.

– Network Users:

• Faster call establishment. 200ms in Group Calls.

(For Intersite calls are the same time than in the same Site)

4.- SOME REFERENCES

Some References

Civil Protection and Disaster Management. Interior and Justice Ministry of Venezuela

Some References

Civil Protection and Disaster Management. Interior and Justice Ministry of Venezuela

Some References

Civil Protection and Disaster Management. Interior and Justice Ministry of Venezuela

Some References

KPN Integrated & Managed Solutions / Rotterdam Harbour (Netherlands)

Some References

KPN Integrated & Managed Solutions / Rotterdam Harbour (Netherlands)

Voice scenario:•24 hours of High traffic •10.000 group voice calls every day•300.000 calls every month, from April 03•4 erlangs of traffic •100% availability

Nº of daily calls

0

2000

4000

6000

8000

10000

12000

14000

16000

Some References

TMB: Transportes Metropolitanos de Barcelona (Spain)

Some References

TMB: Transportes Metropolitanos de Barcelona (Spain)

TMB BARCELONASAE (buses with GPS)Data scenario:•GPS info sent by SDS•100.000 SDS calls every day•3 millions of SDS calls every month, from 2002•100% availability

Nº of daily calls

0

20000

40000

60000

80000

100000

120000

140000