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Synchronising traffic over packet switch networks

Synchronisation solution for the next generation asynchronous telecom transport networks. Support will be possible for an efficient transport legacy tmd-based (time division multiplexing) voice and data service, complying with qos (quality of services) requirements.

The SYNCOPA proposes an innovative, state-of-the-art synchronisation solution for the next generation asynchronous Telecom Transport networks. The SYNCOPA enables support for an efficient transport legacy TDM-based (Time Division Multiplexing) voice and data services, complying with QoS (Quality of Service) requirements, with the growing use of pervasive IP (Internet Protocol)/Ethernet/MPLS networks. Additionally, the SYNCOPA is suitable for the Next Generation wireless cellular - the 3GPP and the UMTS (Universal Mobile Telecommunications System) standards demand an accurate Stratum 3/3E timing reference clock. The demand from the new generation includes all technical and commercial aspects such as low price and small sized units. This is a challenge for the synchronisation part (TERASYNC) but most of all for the sources manufacturer (TEMEX). The same accuracy and physical cells of the Rubidium must be made and at a very low cost (today in the vicinity of 2,000 dollars each) - as low as 900 dollars and below - which makes it a real technology challenge. Add to that the nature of the new base cell - the demand is for very small dimensions - the technical challenge is made even tougher. Today a small Rubidium is the size of a regular cigarette box - they will have to make it about as small as a matchbox - and less power consuming at the same time. Once the remote unit is receiving the Time Stamp, it creates relative errors and this result is fed into the "DSP part" (Directory System Protocol) of the unit. The SYNCOPA (DSP part) will lock on this data and create a smooth stratum level output as per all relevant standards. The output of this module is provided to the local node or base station and used in the system clock in a regular network element. The output clock is also the reference clock for creating a local Time Stamp Generator - in the case of a cascade network and a chain of TDM nodes over the IP/Ethernet cloud. In addition to all of that, the Rubidium side should support the TERASYNC part with special frequencies and special signals to help them both communicate with each other - in order to make the whole solution a real low cost and working solution. The SYNCOPA project's main objective is to enable delivery of accurate reference timing for synchronous traffic over a Packet Switch Network (PSN). The key for doing that is in the ability to synchronize these two types of networks. This project will focus on TDM support over PSN (IP) and synchronisation over Ethernet. The SYNCOPA project result will be a solution prototype consisting of timing hardware and standard-based protocols. That solution would perform the packet network signal processing which is required for delivering output frequencies, free of input impairments, at corresponding levels as required per the various international synchronisation standards of which ETSI (European Telecommunications Standards Institute) EN 300 462-3-1 and ITU-T (International Telecommunications Union) Rec. G.812 and G.813 are the most prominent. As such it should bring a Stratum 1 traceable to slave equipment. Keywords: synchronisation, PSN (Packet Switch Networks), traffic.
Acronym: 
SYNCOPA
Project ID: 
3 459
Start date: 
01-01-2005
Project Duration: 
24months
Project costs: 
1 630 000.00€
Technological Area: 
Network Technology, Network Security
Market Area: 
Communications processors/network management

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