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Wireless sensor networks (WSNs) are made up of large number of sensor nodes with restricted power resources and storage capacity. As it is necessary to utilize the limited power of each node very efficiently. Therefore it is essential to design an improved chain-based routing protocol for enhancing the lifetime of the network. Among all the existing routing protocols, chain-based routing is one of...
Data centers are over provisioned to handle traffic surges. However, various studies of data center traffic regarded this upsurge as a rare event and shown that the resources of data center are underutilized. Hence, there is a need to conserve energy by providing control knobs that turn the resources of data center on/off according to the traffic condition. In this paper, we study the ability of 4-4,...
In Wavelength Division Multiplexing (WDM) optical networks, the failure of network resources (e.g., fiber link or node) can disrupt the transmission of information to several destination nodes on a light-tree based multicast sessions. Thus, it is essential to protect multicast sessions by reserving resources along back-up trees. So that if primary tree fails to transmit the information back-up tree...
The increasing complexity and sophistication of the applications deployed on Data Center Network (DCN) demanded new features and greater performance from the DCN. This resulted in many designs addressing various challenges such as cost, performance, reliability, scalability, security and energy. One major challenge a designer often faces is the realization of their proposed design or realization of...
Architecture plays an important role in the design of Data Center Networks (DCN). Designs for DCN are to be scalable, robust and efficient. There are many designs proposed in recent years where routing is performed using location information of the server. These designs solve scalability problem of IP and Ethernet with additional overhead of determining and maintaining location information of the...
Mobile ad-hoc network technology has gained popularity in recent years by researchers on account of its flexibility, low cost and each of deployment. The objective of this paper is to model the behavior of routing metrics in MANET for different protocols. These metrics have been generated by Network Simulator NS 2.34 tools and the node movement has been generated using Bonmotion 1.4. The metrics behavior...
Wireless sensor networks consist of tiny sensor nodes with sensing, computation and wireless communication capabilities. The design of routing protocols is influenced by various factors like fault tolerance, energy efficiency, scalability, latency, power consumption and network topology. The primary design objective of research is determining the active nodes and enhancing the energy efficiency. In...
Wireless Sensor Network(WSN) is being emerged as a prevailing technology in future due to its wide range of applications in military and civilian domains. These networks are easily prone to security attacks, since once deployed these networks are unattended and unprotected. Some of the inherent features like limited battery and low memory makes sensor networks infeasible to use conventional security...
In a structured peer-to-peer (p2p) network, key based routing algorithms are used for searching and locating resources in the network. For dynamic and scalable behavior these algorithms suffer from high overhead to maintain large state information of nodes and to keep them up-to-date. To deal with this problem, a Sub-ring Based Chord model and a lookup algorithm are proposed. The lookup process keeps...
This research work focuses on Integer Linear Programming (ILP) formulations for the Routing and Wavelength Assignment (RWA) problem in Wavelength Division Multiplexed (WDM) networks where end-users communicate with each other by establishing all-optical, non-interfering wavelength channels which are referred as lightpaths. The RWA problem is reducible to Graph Coloring problem in polynomial time and...
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