Fractional Lambda Switching Principles Of Operation And Performance Issues  

Oleh:

Baldi, Mario ; Ofek, Yoram

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Simulation vol. 80 no. 10 (Oct. 2004), page 527-544.
Topik: Fractional lambda switching; common time reference; pipeline forwarding; optical networks; Banyan networks
Fulltext: 527.pdf (419.05KB)

Isi artikel

This article introduces fractional lambda (?) switching (F?S) and studies its blocking issues.F?S uses a global common time reference (CTR) for implementing pipeline forwarding (PF) inside the network. A global CTR is conveniently realized with the UTC (coordinated universal time) standard. Resource reservation over an F?S network requires a schedule. As in other scheduling cases, a call may not be accepted, even though there is enough capacity, because the schedule is not available—the call is then considered blocked. This work studies the probability of call blocking as a function of link utilization. The results show that (especially if multiple-wavelength division multiplexing channels are deployed on optical links between fractional ? switches) high-link utilization can be achieved with negligible call blocking, even when the switching fabric is a Banyan network.

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