In opportunistic networks the existence of a simultaneous path is not assumed to transmit a message between a sender and a receiver. Information about the context in which the users communicate is a key piece of knowledge to design efficient routing protocols in opportunistic networks. But this kind of information is not always available. When users are very isolated, context information cannot...

The multi-hop wireless network has drawn a great deal of attention in the research community. Within the long period after it was proposed, the routing and forwarding operations in the multi-hop wireless network remain to be quite similar to those in the multi-hop wired network or the Internet. However, all the data transmission over the wireless medium in the wireless networks is by broadcasti...

In most research work for sensor network routings, perfect aggregation has been assumed. Such an assumption might limit the application of the wireless sensor networks. We address the impact of aggregation efficiency on energy consumption in the context of GIT routing. Our questions are how the most efficient aggregation point changes according to aggregation efficiency and the extent to which ...

Routing protocols for multi-hop wireless networks have traditionally focused on finding the best path for forwarding packets between a pair of nodes. While such single-path forwarding is suitable for wired networks with relatively stable point-topoint links, it is not an ideal approach for wireless networks with broadcast links of time varying qualities. Opportunistic routing schemes, which exp...

For improving the efficiency and the reliability of the opportunistic routing algorithm, in this paper, we propose the cross-layer and reliable opportunistic routing algorithm (CBRT) for Mobile Ad Hoc Networks, which introduces the improved efficiency fuzzy logic and humoral regulation inspired topology control into the opportunistic routing algorithm. In CBRT, the inputs of the fuzzy logic sy...

the major research problem in WSN is to save energy in different operations of the network and increase the lifetime. Most of the energy of a node is consumed during routing process. This is because the environment in which the WSN is used is unstable in nature most of the time like in habitat monitoring, defense applications and industrial applications etc. Hence, there is a need of energy eff...

Energy consumption is an important issue in the design of wireless sensor networks (WSNs) which typically rely on portable energy sources like batteries for power. Recent advances in ambient energy harvesting technologies have made it possible for sensor nodes to be powered by ambient energy entirely without the use of batteries. However, since the energy harvesting process is stochastic, exact...

Opportunistic routing has been widely approved because of its throughput improvement for wireless mesh networks; however, few researches focus on transforming its benefit into realizing energy efficiency for wireless sensor networks (WSNs). We notice that two common issues in fixed-path routing schemes, including single-path routing or multi-path routing, are that (1) a path may traverse throug...

Recently, there has been a growing interest within the research community in developing opportunistic routing protocols. Many schemes have been proposed; however, they differ greatly in assumptions and in type of network for which they are evaluated. As a result, researchers have an ambiguous understanding of how these schemes compare against each other in their specific applications. To invest...