Ad hoc On-Demand Distance Vector (AODV) Routing
01 Jul 2003-Vol. 3561, pp 1-37
TL;DR: A logging instrument contains a pulsed neutron source and a pair of radiation detectors spaced along the length of the instrument to provide an indication of formation porosity which is substantially independent of the formation salinity.
Abstract: The Ad hoc On-Demand Distance Vector (AODV) routing protocol is intended for use by mobile nodes in an ad hoc network. It offers quick adaptation to dynamic link conditions, low processing and memory overhead, low network utilization, and determines unicast routes to destinations within the ad hoc network. It uses destination sequence numbers to ensure loop freedom at all times (even in the face of anomalous delivery of routing control messages), avoiding problems (such as "counting to infinity") associated with classical distance vector protocols.
Citations
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01 Jan 2013
TL;DR: Simulation results shows position based routing protocols gives better performance than topology based routing Protocols in mobile network environment.
Abstract: Due to mobility constraints and high dynamics, routing in Mobile Ad-Hoc Network is a very challenging task. In this work, we evaluate the performance of the routing protocols in mobile network environment. The objective of this work is to assess the applicability of these protocols in different mobile traffic scenarios. Here we considered Topology based routing protocols. In Topology-based routing protocols, both proactive (DSDV) and reactive protocols (AODV, DSR) have been considered for the study. Performance metrics such as packet delivery ratio, throughput, and end-to-end delay are evaluated using NS-2. Simulation results shows position based routing protocols gives better performance than topology based routing protocols.
56Â citations
21 May 2012
TL;DR: This paper addresses the low-power mechanisms provided by the IEEE 802.15.4/ZigBee and 6LoWPAN protocols, providing comparative assessments through experimental measurements performed on a real testbed, highlighting the strengths and weaknesses of both protocols when working in low- power mode.
Abstract: This paper addresses the low-power mechanisms provided by the IEEE 802.15.4/ZigBee and 6LoWPAN protocols, providing comparative assessments through experimental measurements performed on a real testbed. For a fair performance comparison, a special effort has been made to both tune the parameters of each protocol so as to make it able to properly operate in low-power mode and make the measurement scenarios equivalent in terms of traffic and energy efficiency. After addressing this tuning phase, the paper compares the protocols performance obtained on the same network, under the same workload and while working with the same duty cycle. The comparison focuses on the impact of the low-power mechanisms on the network performance. The experimental assessments highlight the strengths and weaknesses of both protocols when working in low-power mode.
56Â citations
08 Mar 2005
TL;DR: A lightweight service discovery mechanism for the mobile ad hoc pervasive environment, applying cross-layer design to reduce the infrastructure and protocol overhead, and to improve service accessibility is presented.
Abstract: This paper presents a lightweight service discovery mechanism for the mobile ad hoc pervasive environment, applying cross-layer design to reduce the infrastructure and protocol overhead, and to improve service accessibility. Integrated with the network routing layer, the proposed mechanism automatically identifies the proper service discovery model for the current network configuration. The solution adapts to network expansion with enhanced scalability. Simulation studies of real-time service scenarios employing the proposed mechanism are presented, demonstrating the efficiency of the mechanism and the satisfactory service performance results.
56Â citations
04 Oct 2004
TL;DR: A novel bidirectional multi-channel MAC protocol designed to improve TCP performance over a multihop wireless network and fairness is improved, since contention is confined to a short handshake period on the control channel.
Abstract: The TCP protocol often suffers from performance problems in conventional single-channel multihop wireless ad hoc networks. The problems arise from hidden node and exposed node issues, which can lead to channel contention in the forward direction between TCP DATA packets that are part of the same TCP flow control window, as well as contention between TCP DATA and TCP ACK packets flowing in opposite directions. In this paper, we propose and evaluate a novel bidirectional multi-channel MAC protocol designed to improve TCP performance over a multihop wireless network. The protocol uses multiple transmission channels at the physical layer to reduce TCP DATA-DATA contention, and bidirectional RTS/CTS channel reservations to reduce TCP DATA-ACK collisions. With four channels, simulation results for static multihop networks show TCP throughput gains of 50% to 180%, compared to a conventional IEEE 802.11 MAC protocol. Fairness is also improved with our protocol, since contention is confined to a short handshake period on the control channel.
56Â citations
TL;DR: An algorithm that is able to structure the topology of different wireless sensor networks to coexist in the same environment is proposed and compared with other algorithms reported in the literature in terms of architecture and protocol measurements.
Abstract: A wireless sensor network is a self-configuring network of mobile nodes connected by wireless links where the nodes have limited capacity and energy. In many cases, the application environment requires the design of an exclusive network topology for a particular case. Cluster-based network developments and proposals in existence have been designed to build a network for just one type of node, where all nodes can communicate with any other nodes in their coverage area. Let us suppose a set of clusters of sensor nodes where each cluster is formed by different types of nodes (e.g., they could be classified by the sensed parameter using different transmitting interfaces, by the node profile or by the type of device: laptops, PDAs, sensor etc.) and exclusive networks, as virtual networks, are needed with the same type of sensed data, or the same type of devices, or even the same type of profiles. In this paper, we propose an algorithm that is able to structure the topology of different wireless sensor networks to coexist in the same environment. It allows control and management of the topology of each network. The architecture operation and the protocol messages will be described. Measurements from a real test-bench will show that the designed protocol has low bandwidth consumption and also demonstrates the viability and the scalability of the proposed architecture. Our ccluster-based algorithm is compared with other algorithms reported in the literature in terms of architecture and protocol measurements.
56Â citations
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207Â citations
"Ad hoc On-Demand Distance Vector (A..." refers methods in this paper
...This section defines other terminology used with AODV that is not already defined in [3]....
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