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In IP over WDM networks, a single failure in the WDM layer breaks down multiple IP links and may leave the virtual topology disconnected. This will make the restoration by the IP layer impossible, which must be avoided by suitable virtual topology design. In this paper, we focus on single-node failure and develop a Remove-Node Algorithm to map IP links on lightpaths in such a way that the IP topology...
Due to spectrum scarcity and emerging various wireless applications in IMT-Advanced system, spectrum allocation scheme becomes a recently critical issue. In this paper, we refer to the concepts of spectrum reservation and power reward, make use of maximum-minimum criteria, propose a cellbased distributed dynamic spectrum allocation (DSA) algorithm which combines the water filling power allocation...
A wireless sensor network consists of a huge number of sensor nodes with limited battery power, which are deployed over a certain geographical area for monitoring the activities of the targets and reporting the information to the sink node. Now that the energy supplying is limited and cannot be replaced freely, the network must minimize the energy consumption in order to prolong the span of the network...
The transmission of IP packets over WDM technology (IP-over-WDM) is expected to be the basic transmission framework of the next generation network. In this paper, a novel architecture of optical network is presented. The optical network control plane is responsible for tracking the network topology and the state of network resources, and for establishing, removing and maintaining connections. These...
Wavelength division multiplexing (WDM) is the next step towards leveraging the capabilities of the optical fiber, especially for wide-area backbone optical data communication networks. In this paper, we analyze some of the key architecture and discuss the models corresponding approaches and advances made toward addressing these issues. We first analyze the different IP/WDM networking framework models,...
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...
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