The main assumption of many routing protocols for wireless mobile ad-hoc networks (MANETs) is that end-to-end paths exist in the network. In practice, situations exist where networks get partitioned and traditional ad-hoc routing fails to interconnect different partitions. Delay/disruption-tolerant networking (DTN) has been designed to cope with such partitioned networks. However, DTN routing a...

—Opportunistic networks exploit human mobility and consequent device-to-device contacts to opportunistically create data paths over time. Identifying influential nodes as relay is a crucial problem for efficient routing in opportunistic networks. The degree centrality method is very simple but of little relevance. Although closeness centrality and betweenness centrality can effectively identif...

In this research, we present a cooperative communication network based on two energy-harvesting (EH) decode-and-forward (DF) relays that contain the harvest-store-use (HSU) architecture and may harvest energy from surrounding environment by utilizing buffers. To improve performance of network, an opportunistic routing (OR) algorithm is presented takes into account channel status information, re...

Due to the increased capabilities of mobile devices and through wireless opportunistic contacts, users can experience new ways to share and retrieve content anywhere and anytime, even in the presence of link intermittency. Due to the significant number of available routing solutions, it is difficult to understand which one has the best performance, since all of them follow a different evaluatio...

In opportunistic networks, end-to-end communication among users does not require a continuous end-to-end path between source and destination. Network protocols are designed to be extremely resilient to events such as long partitions, node disconnections, etc. which are very features of this type of selforganising ad hoc networks. This is achieved by temporarily storing messages at intermediate ...

Opportunistic routing (OR) is a recent routing technique for wireless multihop networks. It exploits the broadcast nature of wireless medium which is not utilized by traditional routing. The important features of OR is selection of forwarding nodes and co-ordination among the nodes to deliver the packets to their destination. Therefore, OR works well in wireless multihop networks with higher no...

opportunistic networks are sparse wireless networks where most of the time there is no INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS VOL. 6, NO. 1, FEBRUARY 2013

In the last few years research activity in Opportunistic Networks (OppNets) is growing and researchers have proposed various types of routing protocols. Context information is the main building block for design of these types of networks. This information is not always available which makes the design of efficient routing protocols is difficult. When context information is not available context...