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The paper describes an Energy — Efficient Resource Allocation protocol for Wavelength-Routed All-Optical WDM Networks. Protocol selects efficient and low power consumption optimal primary and backup paths. The path selection will be done by Central Management System (CMS). The selection will be by two methods, i.e., the path with less number of free wavelengths will not be considered for selection...
Wireless mesh networks(WMNs) have excellent communication capabilities and quality of easy deployment which increases popularity of WMNs. WMNs have an essential routing protocol which facilitates healing of link between Mesh Routers and the Mobile Nodes. Multiple interfaces of Mesh Routers is used for healing the path between the Mesh Routers and the Mobile Node in Mesh Network. Reactive protocols...
In 4G and beyond 4G cellular communication systems, multi-hop relay network (MHR) plays a vital role. Improper deployment of relay station (RS) in MHR network creates some severe issues. The conventional studies on RS deployment have not considered the practical issue of link overloading. In this paper, a two-phase, fuzzy based selection and deployment scheme for RSs is proposed by considering link...
Wireless Sensor Network (WSN) are primarily battery operated. Due to deployment of WSN in harsh environment, of WSN in harsh atmosphere, it's terribly tough to interchange or recharge the battery. So to enhance the lifetime of WSN, it is very essential to reduce energy consumption. non-identical traffic patterns of WSN plays a vital role in the power consumption. Time Adaptive Hybrid MAC (TAHMAC)...
Mostly real time applications want rapid data transmission in the network. The performance can be ensured by mechanisms which gives performance by shaping and policing of packet traffic. Further improve the performance of the network by fair allocation of resources. Many congestion control techniques provide good fairness and throughput, which decreases the loss of packet. We have analyzed the strength...
Mobile ad-hoc networks are commonly known as MANETs. This type of network consists of nodes which are independent, mobile and also able to exchange messages between themselves. These nodes rely on limited battery; a common challenge in MANETs. As soon as battery power of node is used up, that node becomes a dead node. This node is not able to send or receive data. When all network nodes have used...
Wireless channel condition varies due to factors like fading, path loss, noise and other channel impairments. Due to these the channel throughput, packet delivery ratio also varies. In order to achieve higher transmission rates, various modulation schemes are in use. Adapting suitable modulation scheme to match the transmission rates to time varying channel conditions can increase the throughput of...
In the operation of industrial monitoring in distributed manner, new approaches have emerged to achieve the objective of efficient data exchange. Wireless sensor network has up came as an optimal solution to distributed monitoring. In the approach to precise monitoring and remote controlling, new approaches of resource controlling and operational controlling were developed. However, the node level...
The adoption of licensed spectrum by unlicensed users creates an interest in Opportunistic Radio Networks (ORN) and dynamic spectrum access. However the licensed user (primary user) does not use the spectrum all the time. To utilize the spectrum which is not utilized by the primary user at a time, a secondary user (unlicensed user) can use the spectrum. The spectrum mobility will create an opportunity...
The two major concerns of the wireless communication system are throughput of the network and underutilization of wireless channels. Opportunistic routing (OR) aims at improving the former and coping with the latter. Due to the unreliable characteristics of such channels, traditional routing achieves poor throughput. Since traditional routing arbitrarily selects high lossy links among diverse paths...
Wireless Adhoc networks are deployed in emergency situations, military kind of applications, surveillance monitoring and in healthcare industry. The Nodes are dynamic and can accommodate themselves in any existing infrastructures, placed randomly in the network. Every node can easily communicate with any other node through the base station directly. Since entire node communicates simultaneously there...
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