نتایج جستجو برای: position based routing
تعداد نتایج: 3138416 فیلتر نتایج به سال:
Some of the proposed mobile ad hoc network routing algorithms require maintaining a global network state at each node. The global state is always an approximation of the current network state due to the non-negligible delay of propagating local state. The imprecision of global state information and the high storage and communication overhead make those algorithms do not scale well. In this pape...
We consider a wireless ad hoc network composed of a set of wireless nodes distributed in a two dimensional plane. Several routing protocols based on the positions of the mobile hosts have been proposed in the literature. A typical assumption in these protocols is that all wireless nodes have uniform transmission regions modelled by unit disk centered at each wireless node. However, all these pr...
Vehicular Ad Hoc Networks (VANETs) are considered by car manufacturers and the research community as the enabling technology to radically improve the safety, efficiency and comfort of everyday driving. However, before VANET technology can fulfill all its expected potential, several difficulties must be addressed. One key issue arising when working with VANETs is the complexity of the networking...
Position-based routing is touted as an ideal routing strategy for resource-constrained wireless networks. One persistent barrier to adoption is due to its recovery phase, where messages are forwarded according to leftor right-hand rule (LHR). This is often referred to as face-routing. In this paper we investigate the limits of LHR with respect to planarity. We show that the gap between non-plan...
Routing is the foremost issue in mobile ad hoc networks (MANETs), In a wireless environment characterized by small bandwidth and limited computation resources, positionbased routing is attractive because it requires little communication and storage overhead. To guarantee delivery and improve performance, most position-based routing protocols, e.g. GFG, forward a message in greedy mode until the...
Routing in vehicular network is a challenging task due to network partitioning, high vehicular speed, and city environment characteristics. These characteristics results in degraded performance in traditional routing protocols. Traditional routing protocols, addressing the issues of mobile ad hoc network, are applicable for MANET applications. Position-based routing protocols, which are mostly ...
Recent availability of small inexpensive low power GPS receivers and techniques for finding relative coordinates based on signal strengths, and the need for the design of power efficient and scalable networks, provided justification for applying position based routing methods in ad hoc networks. A number of such algorithms were developed in last few years, in addition to few basic methods propo...
In large and dense mobile ad hoc networks, position-based routing protocols can offer significant performance improvement over topology-based routing protocols by using location information to make forwarding decisions. However, there are several potential security issues for the development of position-based routing protocols. In this paper, we propose a secure geographic forwarding (SGF) mech...
Caching for the Web can be beneecial in diierent ways: not only can it reduce network traac and client response time, but it can also enable large scale server load balancing. In this paper, we present preliminary simulation data to characterize the performance of WebWave, a diiusion-based caching protocol for server load balancing that we have recently proposed. Initial results suggest that We...
We present a table-less position based routing scheme for low power data centric wireless sensor networks. Our proposed scheme is localized, uses greedy forwarding approach, and does not rely on neighborhood information. These characteristics reduce the communication overhead (no neighborhood information exchange), make the protocol highly scalable (no routing tables are maintained and beacons ...
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