In this paper, we evaluate the performance of packet-based load balancing in data center networks (DCNs). Throughput and flow completion time are some of the main the metrics considered to evaluate the performance of the transport of flows over the presence of long flows in a DCN. Load balancing in a DCN may improve those metrics but it may also generate out-of-order packet forwarding. Therefor...

Mobile ad hoc network (MANET) is an autonomous system of mobile nodes connected by wireless links. Each node operates not only as an end system, but also as a router to forward packets. The nodes are free to move about and organize themselves into a network. These nodes change position frequently. The main classes of routing protocols are Proactive, Reactive and Hybrid. A Reactive (on-demand) r...

A huge number of Wireless Sensor Network applications involved in a set of isolated urban area covered by sensor nodes monitor the environmental parameters like pressure, heart signal monitoring, temperature etc. The key challenge in the proposal of WSN is being the power consumption of the entire network thereby extending the network lifetime. In Heterogeneous WSN, the use of single and multi-...

The paper concerns the definition and performance evaluation of a new multi-hop routing protocol for underwater wireless sensor networks. Our solution, termed CARP for Channelaware Routing Protocol, exploits link quality information for data forwarding, in that nodes are selected as relays if they exhibit recent history of successful transmissions to their neighbors. CARP avoids loops and can s...

Most of the conventional routing protocols in Mobile Ad-hoc Network (MANET) utilize the path until a link breaks or failures. During the path reconstruction, packets may be lost which can cause significant packet delivery ratio and throughput degradation. The previous researches such as FMQTMHDCR approaches were developed for only detecting the blackhole and grayhole attacks which allows the pr...

Enhancing route request broadcasting protocols constitutes a substantial part of recent research in mobile ad-hoc network (MANET) routing. We suggest a novel approach to modify route request broadcast based on node caching. The intuition behind node caching is that the nodes involved in recent data packet forwarding have more reliable information about its neighbors and have better locations (e...

Energy efficiency and network lifetime are main concerns in WSN. In order to improve these factors ZigBee plays an important role. Low cost, low data rate features of ZigBee results in low power consumption and makes it useful in wireless sensor networks, increasing life of small batteries of nodes in the network. Since tree routing in ZigBee does not require any routing tables to send the pack...

Cognitive radio, an upcoming technology gives the solution for the scarcity of spectrum where the transmitter acts as a sensible device which behaves as per the surrounding environment. A group of devices, which follows this technology, forms a temporary network called mobile cognitive radio ad hoc networks. The widely known ad hoc networks are always in moving fashion and there is no need for ...

Network–wide broadcasting is used extensively in mobile ad hoc networks for route discovery and for disseminating data throughout the network. Flooding is a common approach to performing network-wide broadcasting. Although it is a simple mechanism that can achieve high delivery ratio, flooding consumes much of the communication bandwidth and causes serious packet redundancy, contention and coll...

A Disruption tolerant networks is a network designed temporary, have the unique features of intermittent connectivity which makes routing quite different from other wireless network. Routing misbehavior like selfish or malicious node can cause packet delay and modifying packets in a network. A node is required to keep a few signed contact record of its previous contact based on it the next node...