Data delivery of packets in broad cast using wireless medium is the main intention of this paper, this will be done through a MANETS and should achieve reliable delivery. To do this various protocols are available in the networks world with in that efficient protocol called Position based opportunistic routing protocol which holds stateless property of geographic routing. When a data packet is ...

Modern medium access control (MAC) protocols for wireless sensor networks (WSN) focus on energy-efficiency by switching a node’s radio on only when necessary. This intoduced rendezvous problem is gracefully handled by modern asynchronous approaches to WSN MAC’s, e.g. X-MAC, using strobed preambles. Nevertheless, most MAC layer ignore the possible benefits in energy consumption and end-toend lat...

In recent years opportunistic networks have gain popularity in research and industry. In these networks, nodes come into contact with each other opportunistically and communicate wirelessly. An opportunistic network consists of nodes. These nodes are typically handheld devices carried by people which are equipped with large memory, good sensing capability, high computational power with short-ra...

In Opportunistic Networks (OppNets), mobile devices transmit messages by exploiting the direct contacts, without the need of an end-to-end infrastructure. Disconnections of nodes and high churn rates are normal features of opportunistic networks. Hence, routing is one of the main challenges in this environment. In this paper, we provide a survey of the main routing approaches in OppNets and cla...

Unlike traditional wireless routing protocols which use a single fixed path, opportunistic routing explicitly takes advantage of the broadcast nature of wireless communications by using a set of forwarders to opportunistically perform packet forwarding. A key issue in the design of opportunistic routing protocols is the forwarder list selection problem. In this paper we establish a general theo...

We propose and investigate Multi-Channel Extremely Opportunistic Routing (MCExOR) which is a protocol that extends Extremely Opportunistic Routing by utilizing multiple RF channels in multi-hop wireless networks. Large numbers of transmissions per end-to-end delivery combined with interference are the main reasons for the low capacity of wireless multi-hop networks. MCExOR reduces the overall n...

In multi hop wireless networking, Opportunistic data forwarding has drawn much attention, with most research conducted for stationary wireless networks. Opportunistic data forwarding has not been widely utilized in mobile ad hoc networks (MANETs),the reason behind this is the lack of an efficient lightweight proactive routing scheme with strong source routing capability. In this paper, proposed...

In wireless sensor networks (WSNs), it is inappropriate to use conventional unicast routing due the broadcast storm problem and spatial diversity of communication-links. Opportunistic-Routing (OR) benefits low duty-cycled WSNs by prioritizing multiple candidates for each node instead selecting one as in unicast-routing. OR reduces sender waiting time, but also suffers from duplicate packets wak...

When in physical proximity, data can be directly exchanged between the mobile devices people carry — for example over Bluetooth. If people cooperate to store, carry and forward messages on one another’s behalf, then an opportunistic network may be formed, independent of any fixed infrastructure. To enable performant routing within opportunistic networks, use of social network information has be...

WMN (wireless mesh network) is a useful wireless multihop network with tremendous research value. The routing strategy decides the performance of network and the quality of transmission. A good routing algorithm will use the whole bandwidth of network and assure the quality of service of traffic. Since the routing metric ETX (expected transmission count) does not assure good quality of wireless...