NARROWBAND COMMUNICATION SYSTEMS
Digital narrowband mobile radio solutions (TETRA, DMR, GSM-R) for mission-critical and business-critical applications designed to guarantee operability even in case of significant infrastructure malfunctions, guaranteeing full delivery of voice and data services.
TERRESTRIAL TRUNKED RADIO (TETRA)
TETRA is the communications standard of choice for organisations or groups that require
immediate access to reliable, secure communications. Engineered for the emergency services, it is ideally suited to a number of other The versatility of TETRA technology makes it an ideal solution for several markets both in public safety, industrial and transportation sectors. TETRA is perfectly suited to scenarios where security and reliability of communications are priorities. Leonardo TETRA product portfolio is based on full-IP solution (Adaptanet®) with the capability to support also our previous TETRA TDM version (ElettraSuite) for mixed technology infrastructures.
The complete line of TETRA services, includes:
- Individual communications
- Group communications
- Broadcast communications
- Mobile data communications including Short Data Services (SDS) file transfer and internet access
- Mobile data services taking advantage of multi-slot packet data for narrowband communications
- Integration with broadband data- intensive communications.
Leonardo TETRA offer is composed by:
- Radio base stations (BS Node series and DTA node series) for TETRA coverage and deployment on territory.
- SwMi (TETRA Switching and Management Infrastructure composed by CPS ecosystem) intrinsically ready for multitechnology integration.
- Control room equipment including recorders and
dispatchers. - Gateways for interconnection with external networks (PSTN, ISDN, and packet data).
- Peripheral terminals such as handhelds, mobile and fixed stations.
- Applications including Location services, encryption and network management systems.
Leonardo solutions value can be summarized as follows:
- Full IP distributed or centralized architectures
- Scalable from single site to nation-wide
- Fast deployable and easy to install
- Resilient reliable and secure
- Native broadband integration
- Standard hardware and protocols open to virtualization and
cloud.
DIGITAL MOBILE RADIO (DMR)
DMR is the ETSI standard for digital radio communications. It introduces a 2 slot TDMA channel access feature, doubling the communication capability and making simultaneous voice and data applications possible. The company’s “dual-mode” ECOS-D and ECOS-E (conventional Tier II) network are able to work in analogue and digital modes. This feature allows the use of existing analogue terminals with the possibility to gradually substitute them with digital terminals as DMR solutions encompass both Tier II conventional Simulcast and Tier III trunking networks.
Leonardo DMR solutions operate on VHF and UHF frequencies bands, feature a full-IP system architecture and are IOP certified for primary vendors DMR terminals. DMR multi-site solutions allow versatility in network architectures several configurations different inter-site links (IP, E1, 4W-EWM and RF).
DMR networks can be used to support SCADA applications as well as operational communications over large areas using the same physical channel, due to the2 slot TDMA air interface structure.
DMR solution includes:
- Repeaters for standalone, conventional, simulcast and “trunking” configurations (ECOS-D RBS 4000 and ECOS-E DTA 7000).
- Dispatchers and control room terminals.
- Network management applications.
Leonardo SIMULCAST
Simulcast (Simultaneous Broadcasting) networks are the best solution for professional mobile radio applications requiring the coverage of large territories with low-medium traffic density and only a small number of frequencies available. The company designs and manufactures conventional DMR Tier II and Tier III Simulcast solutions that are used by Italian and world PMR organisations in both the public and private sectors.
In a Simulcast network, repeaters are spread over the territory to make a sort of virtual repeater covering the whole served area and offering a transparent communications handover. The main challenge when designing a Simulcast DMR is to manage the delay spread that characterises overlapping areas.
The company has wide experience designing networks radio coverage and delay spread analysis – this provides optimised system performance.
Leonardo TRUNKING
Tier II solutions are complemented by DMR Tier III “ solutions designed to cope with higher traffic given the capability to manage multiple frequency pairs instructing terminals in automatic tuning operations by of a control channel.
Trunking solutions includes:
- Single site system
- Simulcast multi-site system (number of frequencies andchannels is the same in each site)
- Cellular multi-site system.
Leonardo DMR solutions value can be summarized as follows:
- All-in-One base station including all supportedconfigurations.
- Powerful DSP based design for simulcast issues
- Efficient Simulcast over IP (SoIP) protocol ensuring signal quality
- Switchless architecture (DMR Tier III) with embedded controller in base stations supporting multi system/multi protocol centralized or distributed configurations
- Versatility in radio base station configuration
- Auto adaptive/multiple link technology (A2T)
- Embedded UHF link (CST).
