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Delay and disruption tolerant networking (DTN) architecture has been developed for networks operating under extreme conditions. DTN architecture is built using a set of new protocol family including Bundle Protocol and Licklider Transmission Protocol which relax almost all the assumptions for the existence of a network, like presence of end-to-end cnnectivity among communicating nodes, low propagation...
This paper presents a novel approach to monolithically implement a planar multiport radio-frequency (RF) microelectromechanical systems (MEMS) T-type switch. T-type switches are used as building blocks of redundancy switch matrices used in space telecommunication. The T-type switch performs signal routing in three operational states. Two of them are boundary states while the other one is a crossover...
Mobile Ad-hoc Network (MANET) is the self organizing collection of mobile nodes. The communication in MANET is done via a wireless media. Ad hoc wireless networks have massive commercial and military potential because of their mobility support. Due to demanding real time multimedia applications, Quality of Services (QoS) support in such infrastructure less networks have become essential. QoS routing...
Wireless Access Networks, such as Wi-Fi, have been widely deployed due to their convenience, portability, and low cost. However, they still suffer inherent shortcomings such as limited radio coverage, poor system reliability, and lack of security and privacy. Privacy threat is one of the critical issues in Multi hop Wireless Networks, where attacks such as traffic analysis and flow tracing can be...
Internet traffic measurement and analysis have been usually performed on a high performance server that collects and examines packet or flow traces. However, when we monitor a large volume of traffic data for detailed statistics, a long- period or a large-scale network, it is not easy to handle Tera or Peta-byte traffic data with a single server. Thus, in this paper, we propose separate server for...
The main objective of the paper is to increase the throughput thereby reducing the routing overhead and jitter between nodes. To achieve this, it is proposed to go for reactive routing protocols. Proactive routing protocols use table-driven strategy that is the routing tables are exchanged periodically between nodes which results in more energy consumption. To overcome these problems, we go for DSR...
This paper presents a new routing protocol named OEERP (Optimized Energy Efficient Routing Protocol), that improves the life time of Wireless Sensor Network (WSN). It is a cluster based protocol in which the node that acts as cluster-head is changed in every time slot. This approach improves the lifetime of the WSN for two reasons mainly. The first reason is the uniform battery drain of the nodes...
Mobile Ad Hoc Network (MANET) is a collection of mobile nodes (hosts) which communicate with each other via wireless links either directly or relying on other nodes as routers. In general, routing protocols for MANETs are designed based on the assumption that all participating nodes are fully cooperative. However, due to the open structure and scarcely available battery-based energy, node misbehaviors...
Mobile ad-hoc network is a wireless infrastructure network where there is no central co-ordination among the nodes. The nodes try to communicate with each other without any fixed networking infrastructure, thus the ad-hoc network is self adaptive. This paper presents a scheme to balance the load with energy efficiency considering both congestion and the nodes energy usage. A threshold value is used...
Wireless sensor network requires robust and energy efficient routing protocols to minimise the energy consumption as much as possible. Channel fading, interference and radio irregularity create a big challenge in the design of energy efficient communication and to route the data in wireless network. To mitigate the fading effects in wireless channel, multi-input multi-output (MIMO) scheme is utilised...
Delay tolerant Network (DTN) is new challenging network where end to end delay is more as no end-to-end connectivity. This network is emerged from Mobile Adhoc network. In Internet, data transmission is possible only between those nodes, where TCP/UDP can able to establish connection. This is impossible in DTN where TCP and UDP protocol cant used due no end-to-end connectivity. This makes DTN interesting...
Wireless Access Networks, such as Wi-Fi, have been widely deployed due to their convenience, portability, and low cost. However, they still suffer inherent shortcomings such as limited radio coverage, poor system reliability, and lack of security and privacy. Privacy threat is one of the critical issues in Multi hop Wireless Networks, where attacks such as traffic analysis and flow tracing can be...
With the ever increasing demand of multicasting on the Internet, the interest in deploying multicast for distribution of these contents have increased. To evaluate the performance of multicast protocols many efforts have been put into defining multicast metrics. This paper defines the performance metric for evaluation of multicast protocols DVMRP, MOSPF, PIM-SM, PIM-DM and CBT and also outlines the...
A mobile ad-hoc network (MANET) is a collection of mobile nodes which communicate over radio. These kind of networks are very flexible, thus they do not require any existing infrastructure or central administration. Therefore, mobile ad-hoc networks are suitable for temporary communication links. As the nodes are mobile, it is very difficult to find the path between two end points. This paper presents...
Delay tolerant Network (DTN) is new challenging network where end to end delay is more as no end-to-end connectivity. This network is emerged from Mobile Adhoc network. In Internet, data transmission is possible only between those nodes, where TCP/UDP can able to establish connection. This is impossible in DTN where TCP and UDP protocol cant used due no end-to-end connectivity. This makes DTN interesting...
Wireless mesh networks (WMNs) experience frequent link failures caused by channel interference, bandwidth demands causes severe performance degradation in WMNs. Link failure will lead to produce a sequence of disruptions to deliver the packets to the destination. To overcome this ART rerouting the traffic via an alternative path from a node whose local link is down without the need to wait until the...
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