Analysis of “Distance-Loss” Model Influence Factors in Vehicular Ad Hoc Networks

2012 ◽  
Vol 490-495 ◽  
pp. 1481-1485
Author(s):  
Jiang Feng Wang ◽  
Xue Dong Yan ◽  
Shuo Nie
Keyword(s):  
Measurement Error ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Influence Factors ◽  
Distance Measurement ◽  
Experimental Sample ◽  
Position Information ◽  
Loss Model ◽  
Accurate Position ◽  
Hoc Networks

In vehicular ad hoc network(VANETs), it is crucial for obtaining more accurate position information which variation rules between “distance-loss” model influence factors and distance measurement error is analyzed. Based on qualitative analysis of “distance-loss” model, field experimental scene and scheme are proposed. Using experimental sample data, the relation of environmental factor and shelter factor and distance measurement error is studied quantitatively. The experimental results show that distance measurement performance of optimized “distance-loss” model is significantly improved, and 6.7% is the largest reduction proportion of distance measurement error.

Location Security in Vehicular Wireless Networks

2014 ◽  
pp. 108-133
Author(s):  
Gongjun Yan ◽  
Danda B. Rawat ◽  
Bhed Bahadur Bista ◽  
Lei Chen
Keyword(s):  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Signal Strength ◽  
Location Information ◽  
Probability Models ◽  
Position Information ◽  
Multiple Resources ◽  
Wireless Signal ◽  
Hoc Networks ◽  
Vehicular Wireless Networks

In Vehicular Ad-Hoc Networks (VANETs), applications are based on one fundamental piece of information: location. Therefore, attackers will exploit location information to launch attacks. The authors present an in-depth survey of location security methods that have been recently proposed in literature. They present the algorithms or protocols of different methods and compare them with each other in this chapter. The methods are mainly in three aspects: position integrity, position confidentiality, and position availability. The position integrity methods focus on validating a vehicle’s position to ensure the position information is correct. Position confidentiality ensures not only the confidentiality of position information but also the authentication of location that a location related message can only decrypt by the receiver which is “physically” present inside a decryption region that is specified by location, time, and speed. The position availability methods create and maintain a reliable routing path to delivery position information. The selection and maintenance of routing paths in literature can be based on multiple resources, for example wireless signal strength, computation resources, and probability models. The three aspects, position integrity, position confidentiality, and position availability, are the three basic requirements of information security based on the standard 200 of NIST.

Modified fuzzy-based greedy routing protocol for VANETs

2020 ◽  
Vol 39 (6) ◽  
pp. 8357-8364
Author(s):  
Thompson Stephan ◽  
Ananthnarayan Rajappa ◽  
K.S. Sendhil Kumar ◽  
Shivang Gupta ◽  
Achyut Shankar ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Routing Protocol ◽  
Intelligent Transportation Systems ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Research Area ◽  
Transportation Systems ◽  
Delivery Ratio ◽  
Greedy Routing ◽  
Hoc Networks

Vehicular Ad Hoc Networks (VANETs) is the most growing research area in wireless communication and has been gaining significant attention over recent years due to its role in designing intelligent transportation systems. Wireless multi-hop forwarding in VANETs is challenging since the data has to be relayed as soon as possible through the intermediate vehicles from the source to destination. This paper proposes a modified fuzzy-based greedy routing protocol (MFGR) which is an enhanced version of fuzzy logic-based greedy routing protocol (FLGR). Our proposed protocol applies fuzzy logic for the selection of the next greedy forwarder to forward the data reliably towards the destination. Five parameters, namely distance, direction, speed, position, and trust have been used to evaluate the node’s stability using fuzzy logic. The simulation results demonstrate that the proposed MFGR scheme can achieve the best performance in terms of the highest packet delivery ratio (PDR) and minimizes the average number of hops among all protocols.

Study of Ad hoc Networks with Reference to MANET, VANET, FANET

2017 ◽  
Vol 7 (7) ◽  
pp. 390 ◽  
Author(s):  
Bodhy Krishna .S
Keyword(s):  
Ad Hoc Networks ◽  
Ad Hoc Network ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Network ◽  
Wireless Ad Hoc Network ◽  
Mobile Ad Hoc ◽  
Autonomous Nodes ◽  
Hoc Networks ◽  
Network Administration

A wireless ad hoc network is a decentralized type of wireless network. It is a type of temporary computer-to-computer connection. It is a spontaneous network which includes mobile ad-hoc networks (MANET), vehicular ad-hoc networks (VANET) and Flying ad-hoc networks (FANET). A MANET is a network that has many free or autonomous nodes often composed of mobile devices that can operate without strict top-down network administration [1]. A VANET is a sub form of MANET. It is a technology that uses vehicles as nodes in a network to create a mobile network. FANET is an ad-hoc network of flying nodes. They can fly independently or can be operated distantly. This paper discusses the characteristics of these three ad-hoc networks.

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