Performance enhancements of the CMCC"s national mesh network using the intelligent optical cross-connect switches

Abstract

In the last five years, the traffic growth rate in China has been extremely fast. By 2005, the number of wired telephone customers is estimated to reach 220 to 260 million, while the number of expected cellular customers will reach 260 to 290 million. To meet these challenges, we will continue evolving with more wavelengths and higher speed. By evolving point-to-point WDM systems to OTN/ASON systems, we can eliminate the throughput bottleneck of network nodes caused by electronics, provide optical-layer bandwidth-management capability, provide scalability (which allows continuous traffic growth and network expansion), and provide reconfigurability (which allows semi-dynamic and dynamic optical networking). We can also simplify and speed up provisioning of high-speed circuits and services and offer fast network protection and restoration on the order of tens or hundreds of milliseconds to guarantee excellent network and service survivability.The CMCC (China Mobile Communication Company) will build its OTN network towards the ASON. The CMCC's long-haul national network utilizing OXC has clearly becomes an intelligent network. It offers end-to-end point-and-click provisioning, shared mesh restoration with a few tens to a couple of hundred msec restoration times, re-provisioning of connections in the event of double failures and network capacity that is not optimally used.In this paper, first we present the CMCC network situation, The network planning tool will be introduced, Then we compare ring with mesh solution in terms of the cost, network performance, protection and restoration, network re-optimization. At last we derive a desired conclusion.

Systematic Review on Methods for OTN Network Planning

“…In [46], we have an approach seeking to optimize the allocation of regenerators in the network. Routing algorithms for wavelength allocation and network efficiency were observed in [58], [60], [49], [46], [47], [43], [6], [22], [21], [18].…”

“…The physical planning considers adjustments in topologies and architectures of physical, the designing network elements are fixed, the authors [70], [23], [18] adopted this planning strategy. Specifications of components are generally commercial, not allowing flexibility in the adaptations and adjustments of the networks under study.…”