PMR Summit: The Selex-Elsag PERSEUS communications service platform

Angelo Benvenuto, business development manager at Selex Elsag, explains how its new platform will allow multi-radio technologies to interoperate as if they are on one network. James Atkinson reports

PMR Summit: The Selex-Elsag PERSEUS communications service platform

Selex Elsag introduced its communication service platform (CSP) at the PMR Summit/Professional LTE event. 

Named PERSEUS (Professional and Emergency Resilient System Enabling Ubiquitous Services) it is designed to be an effective step towards next-generation networks providing PMR and multi-media services independent of the access technology, while also integrating LTE/4G. 

The aim of the CSP is to provide a solution that supports a wide range of wireless technologies and allows them to interoperate for mission and operational critical communications. With European governments strapped for cash and short of spectrum for dedicated broadband networks for public safety, Selex’s CSP provides a cost effective solution for interoperability.

Selex also sees the platform as ideal for supporting mixed-forces military operations, multi-technology network architectures for smart cities and for smart grids, SCADA systems and remote monitoring in the energy, oil and gas industries.

Emergency communication

Angelo Benvenuto, business development manager at Selex Elsag, points out that often different emergency services cannot communicate with each other. Communications become even more difficult in disaster relief scenarios that might include military radio, TETRA, DMR and broadband technologies, such as Wi-Fi, WiMAX and LTE.

The PERSEUS CSP integrates different access technologies, such as PMR and broadband, for voice, video and multimedia communications. It also integrates their subscribers by creating a single, unified and homogenous network. 

The control layer is separated from the user access layer and processing platforms, which makes it easily scalable from single site installations to large regional or even country-wide, multi-agency infrastructures.

Broadband access

The core network is fully IP-compliant with a control plane based on SIP/SIP+ and TETRA L3 protocol transported over IP. 

This means that broadband services can be accessed (depending on the user’s device of course) while the functionalities of non-IP standards such as TETRA, DMR or analogue radio are retained (group calls, priority and pre-emption management, QoS, security clearance etc) thanks to dedicated gateways developed by Selex.

Voice calls

A TETRA radio user will not be able to access a video feed, but he will be able to make voice calls to someone on a military radio or a 3G or 4G device.

Benvenuto says: ‘The system is now sellable and we are marketing it already. It is not a COTS product as we had to develop the gateways to allow IP technologies to interoperate with legacy systems.’

Selex has also developed a vehicle on-the-move version called PERSEUS WiNN Mobile V2, which provides voice and data communications, vehicle status and location monitoring. 

It provides a large set of interfaces over multiple networks ensuring continuous radio coverage by switching to the most reliable signal, be it analogue to digital or TETRA to broadband, while maintaining the same IP address and without interrupting the session.

Key benefits of PERSEUS

  • Interoperability: Integration of different technologies for voice and data communications to ensure a common set of shared services
  • Scalability: Configurations suitable for different situations from single vehicle to regional networks
  • Unified Command and Control: Enhanced multi-agency operations co-ordination and management
  • Resilience: in all conditions
  • Unified network and subscriber management: For increased operational efficiencyTechnology interworking: Services transparently available across multiple technology domains
  • Service-orientated system and standard interfaces towards the applications layerFixed and wireless broadband connections
  • Fast deployable infrastructure in no-coverage areas or when traffic levels increase.


Written by Wireless magazine
Wireless magazine

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