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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TL;DR: This paper provides a taxonomy for opportunistic routing proposals, based on their routing objectives as well as the optimization tools and approaches used in the routing design, and identifies and discusses the main future research directions related to the opportunistic routed design, optimization, and deployment.
Abstract: The great advances made in the wireless technology have enabled the deployment of wireless communication networks in some of the harshest environments such as volcanoes, hurricane-affected regions, and underground mines. In such challenging environments suffering from the lack of infrastructure, traditional routing is not efficient and sometimes not even feasible. Moreover, the exponential growth of the number of wireless connected devices has created the need for a new routing paradigm that could benefit from the potentials offered by these heterogeneous wireless devices. Hence, in order to overcome the traditional routing limitations, and to increase the capacity of current dynamic heterogeneous wireless networks, the opportunistic routing paradigm has been proposed and developed in recent research works. Motivated by the great interest that has been attributed to this new paradigm within the last decade, we provide a comprehensive survey of the existing literature related to opportunistic routing. We first study the main design building blocks of opportunistic routing. Then, we provide a taxonomy for opportunistic routing proposals, based on their routing objectives as well as the optimization tools and approaches used in the routing design. Hence, five opportunistic routing classes are defined and studied in this paper, namely, geographic opportunistic routing, link-state-aware opportunistic routing, probabilistic opportunistic routing, optimization-based opportunistic routing, and cross-layer opportunistic routing. We also review the main protocols proposed in the literature for each class. Finally, we identify and discuss the main future research directions related to the opportunistic routing design, optimization, and deployment.
229 citations
01 Aug 2007
TL;DR: This book presents the key features of wireless networks and discusses various techniques for ensuring secure communication, as well as techniques for dealing with hacking and other forms of attack.
Abstract: The current rate of deployment of wireless networks - whether cellular, LAN, Bluetooth, or sensor - is remarkable. Wireless systems are vulnerable to many kinds of attack, and the security features of fixed-line systems are not always applicable in the wireless arena. With ever-increasing amounts of data being carried on wireless networks, security has become a major concern and an area of great commercial importance. This book presents the key features of wireless networks and discusses various techniques for ensuring secure communication. In particular, techniques for dealing with hacking and other forms of attack will be dealt with, as will cooperation in multi-hop and ad hoc networks. It is suitable for senior undergraduates and graduate students of electrical engineering and computer science. Given the breadth of coverage, it will also appeal to researchers and practitioners in the wireless industry.
227 citations
Cites background from "Ad hoc On-Demand Distance Vector (A..."
...A detailed description of AODV can be found in [307]; here we give only a brief overview....
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TL;DR: This paper examines five different combinations of modifications that may be incorporated into virtually any on‐demand protocol in order to improve its scalability.
Abstract: As mobile networking continues to experience increasing popularity, the need to connect large numbers of wireless devices will become more prevalent. Many recent proposals for ad hoc routing have certain characteristics that may limit their scalability to large networks. This paper examines five different combinations of modifications that may be incorporated into virtually any on-demand protocol in order to improve its scalability. The scalability of current on-demand routing protocols is evaluated through the selection of a representative from this class of protocols. The performance of the un-modified on-demand protocol is compared against that of it combined with each of the scalability modifications. Each scheme's behavior is analyzed in networks as large as 10,000 nodes through detailed simulation. Based on the observations, conclusions are drawn as to the expected scalability improvement that can be achieved by each modification.
227 citations
Cites background or methods from "Ad hoc On-Demand Distance Vector (A..."
...The Ad hoc On-Demand Distance Vector (AODV) Routing protocol [28], [ 29 ] is used as a representative of on-demand routing protocols....
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...The current Internet draft specification of AODV [ 29 ] recommends such an expanding ring search be used for route discoveries....
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06 Feb 2001
TL;DR: The issue of reliability is addressed and a scalable method to improve packet delivery of multicast routing protocols and decrease the variation in the number of packets received by different nodes is proposed.
Abstract: In recent years, a number of applications of ad-hoc networks have been proposed. Many of them are based on the availability of a robust and reliable multicast protocol. We address the issue of reliability and propose a scalable method to improve packet delivery of multicast routing protocols and decrease the variation in the number of packets received by different nodes. The proposed protocol works in two phases. In the first phase, any suitable protocol is used to multicast a message to the group, while in the second concurrent phase, the gossip protocol tries to recover lost messages. Our proposed gossip protocol is called Anonymous Gossip (AG) since nodes need not know the other group members for gossip to be successful. This is extremely desirable for mobile nodes, that have limited resources, and where the knowledge of group membership is difficult to obtain. As a first step, anonymous gossip is implemented over MAODV without much overhead and its performance is studied. Simulations show that the packet delivery of MAODV is significantly improved and the variation in number of packets delivered is decreased.
227 citations
TL;DR: This presentation explains how network software adapts to user needs and load variations and failures to provide reliable communications in largely unknown networks.
Abstract: Network software adapts to user needs and load variations and failures to provide reliable communications in largely unknown networks.
226 citations
Cites background from "Ad hoc On-Demand Distance Vector (A..."
...Ad Hoc Networks 2, 3 (July 2004), 205 216....
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...The effect of malicious nodes and users, and node mobility (studied for Mobile Ad Hoc Networks [20, 24]) both need further work....
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...A wireless ad-hoc network [20] is a practical example of a SAN which responds to the time-varying conditions related to the mobility of nodes, and changes in the conditions of wireless links (noise, physical obstructions, etc....
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12 Nov 2001
TL;DR: In this article, 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.
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207 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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