To ensure service continuity in networks, local protection pre-configuring the backup paths is preferred to global protection. Under the practical hypothesis of single physical failures in the network, the backup paths which protect against different logical failure risks (node, link and shared risk link group (SRLG)) cannot be active at the same time. Thus, sharing bandwidth between such backu...

A major hurdle to deploying a distributed storage infrastructure in peer-to-peer systems is storing data reliably using nodes that have little incentive to remain in the system. We argue that a node should choose its neighbors (the nodes with which it shares resources) based on existing social relationships instead of randomly. This approach provides incentives for nodes to cooperate and result...

Ad hoc networks are wireless networks with no fixed infrastructure. Each mobile node in the network functions as a router that discovers and maintains routes for other nodes. These nodes may move arbitrarily, therefore network topology changes frequently and unpredictably. Many routing protocols have been designed for ad hoc networks. However, most of these kinds of protocols are not able to re...

In this paper, we introduce a new routing mechanism for IEEE 802.16j. The proposed mechanism can avoid interference between nodes, stabilize the efficiency of transmission, and also provide backup path. According to the simulation results, our mechanism provides better performance than other researches on the theme of functional integrity. Also, the proposal greatly improves stability of transm...

Many investigations have been carried out in the field of path protection and restoration in WDM optical networks. Most of these studies neglect the impact of physical layer impairments on routing and wavelength assignment strategies, and more specifically on protection strategies. Actually, an optical signal undergoes throughout its route many transmission impairments. In the absence of 3R reg...

This paper evaluates the performance of the OLSR pro-active protocol with and without backup routes under varying node densities and with different speed movements in the network. Additionally, this paper assists in ascertaining the effect of varying node densities on the connectivity’s life between mobile nodes in the network. Hence, it showed the affect of a local recovery mechanism resulted ...

The purpose of this study is to maintain efficient backup routes for reconstructing overlay trees quickly. In most conventional methods, after a node leaves the trees, its child nodes start searching for the new parents. In this reactive approach, it takes a lot of time to find a new parent. In this paper, we propose a proactive approach to finding a next parent as the backup route node over th...

Wireless Sensor Network (WSN) is a network of spatially distributed, autonomous sensors nodes deployed for various kinds of monitoring applications. To enable reliable communications between sources to destination, many routing protocols have been proposed in the past by many researchers. These protocols are designed considering inherent sensor nodes constraints i. e. limited battery backup, me...

Sensor network is the real time critical network with specification of normal and specialized sensor nodes. These specialized sensor nodes require the continuous energy backup and regular monitoring. In this paper, a parameter adaptive dynamic programming model is provided to improve the target tracking. At the earlier stage of this model, the node features are explored in terms of energy and f...