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One of the most important routing protocols used in ad hoc networks is AODV. This protocol is a reactive protocol that searches routes only when they are needed. It always exchanges control packets between neighbor nodes for routing. For reduction of control overheads and bandwidth consumption and make AODV usable for VANET, we have eliminated route discovery phase by restricting neighborpsilas distance...
An application scenario embracing the area of Intelligent Transportation Systems (ITS) is studied in this paper. The infrastructure of the application scenario is wireless sensor networks with mobile sinks. The WSN is query-based and with multi-hop transmission for data sensing. The application-specific network architecture was introduced and exploited. The detailed routing algorithm as well as its...
The Application level multicast is an important technique for indirect communication model. However, there are few works to integrate them together. An Infrastructure for Application Level Multicast Routing in Publish/Subscribe system (IALMRS) is proposed in this paper. We realize a multicast routing protocol for such Publish/Subscribe systems based on IALMRS. From the tests for this multicast routing...
Mobile ad hoc networks are networks without fixed infrastructure. The mobile nodes perform both as a host and as a router by forwarding packets to other nodes. Because of the nature of ad hoc networks, there are special demands for ad hoc routing protocols and the performance of these routing protocols is an important issue. This paper presents a simulation based comparative performance analysis of...
Mobile ad hoc networks (MANETs) generally adopt a peer-to-peer architecture in which the nodes themselves provide routing and services to the network. Disconnectivity with peer nodes, induced by mobility, power drains and damage makes route maintenance difficult and degrade the network's ability to offer services reliably to its peer nodes. In this paper, we present a routing scheme for proactive...
A key problem in research on Wireless Sensor Networks (WSNs) is how to improve energy efficiency and extend the lifetime of sensor nodes and therefore the WSNs. In this paper, we address this problem and present a geography–based heterogeneous hierarchy routing (GBHHR) protocol. GBHHR adopts hierarchy structure for better data congregation, which can improve the efficiency of data collection and uses...
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