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In this article, an efficient heuristic approach for routing and wavelength-selective(RWS) in wavelength-division multiplexing (WDM) optical networks is proposed. The high bandwidth of fiber-optic links is utilized through the WDM technology which supports the propagation of multiple laser beams through a single fiber-optic link provided that each laser beam uses a distinct optical wavelength. Thus,...
In WDM network, the load balance problem has received much attention in parallel and distributed applications because good solutions are critical to achieving speedups. This paper discusses traffic technology and load balancing in optical networks. In WDM network, enhancing the performance of an operational network, at both the traffic and the resource levels, are major objectives of traffic engineering...
In this paper, we discuss the routing technology, and analyze the switching technology in optical communication network. WDM optical systems provide orders of magnitude increases in the bandwidth that can be delivered over an existing fiber plant, and enable a significant time-to-market improvement in service delivery, compared to the alternative of laying additional fiber to provide more bandwidth...
The success of Generalized Multi-protocol Label Switching (GMPLS) provides a solution that enhances IP by its remarkably advanced features particularly the improvement in data transfer rate. GMPLS can be well classified, managed and policed across different types of networks. In this paper, we discuss the GMPLS and its application for core optical network. The IP and optical layers are converging...
Network load balancing is the ability to aggregate two or more wide area network (WAN) connections in order to achieve greater reliability and overall throughput. This paper discusses traffic technology and flow optimization in optical network. Performance optimization of networks is actually a control problem. Traffic engineering should provide sufficient control in an adaptive feedback control system...
Protection is a very important problem in optical network. With the rapid development of WDM optical network, protection technology is paid more and more attentions. In this paper, we analyze the protection principle of WDM optical network, propose a protection method for optical network. We study several conventional protection mechanisms, and compare their performance with the proposed mechanism.
In the optimization of operational networks the most important target is the minimization of congestion. Congestion can be divided into two types, congestion in the case where resources are insufficient to carry all the traffic, and congestion in the case where resources are divided inefficiently so that a part of the network is over-utilized while another part of the network has unused band-width...
Routing is simultaneously the most complicated function of a network and the most important in optical network. In this paper, we propose a new mechanism on re-routing in optical network. We make extensive experiments based on this re-routing model, in order to find out the influence of different re-routing parameters, such as the metric chosen or the frequency of crank-back. Through the simulation...
The popularity of the Internet and its related services continues to be one of the main reasons for the explosive growth of traffic volume in global information and optical network. This paper presents an analytical approach for studying load and traffic engineering (TE) in optical network. Load balancing is common in optical networks. It is a key component of traffic engineering, link bundling, and...
This paper proposes a new approach for wavelength-routed optical network with GMPLS technology in WDM networks. Wavelength-routed optical network is utilized through the wavelength-division multiplexing (WDM) technology which supports the propagation of multiple laser beams through a single fiber-optic link provided that each laser beam uses a distinct optical wavelength. Multi-protocol label switch...
In recent years, with the information increasing rapidly, WDM communication network traffic is paid more and more attentions. Traffic engineering (TE) is an interesting application in IP-based networks. TE main objective is to optimize the performance of a network through an efficient utilization of network resources. This paper discusses traffic technology and load balancing in optical networks....
The huge demand for communication network has tend to make topologies of optical networks based on wavelength division multiplexing (WDM) complex. This article proposes a new approach for optical communication network with GMPLS technology in WDM networks. GMPLS grew out of vanilla MPLS, a packet-switching technology designed to improve the efficiency of data networks. A flavor of MPLS, known as MPLS-TE,...
Focused all the attention on survivability schemes under the high speed, multi-service and integrated multi-domain optical networks (MDON) environment. In this paper, based on the traits which are multi-service and distributed control for optical network, we first analyze the problems and challenges posed by MDON survivability. According to the survivability need of MDON, we classify associated key...
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