Inter-vehicle communication is regarded as one of the major applications of mobile ad hoc networks (MANETs). In these so called vehicular ad hoc networks (VANETs) security and privacy are crucial factors for successful deployment. In a scenario, where each vehicle would have a unique identifier, eavesdroppers could easily accumulate location profiles. As a solution approach, several authors suggest using changeable pseudonyms as temporary vehicle identifiers. If a vehicle changes its pseudonym from time to time, long-term tracking can be avoided. However, as we show in this paper, changing identifiers has detrimental effects on routing efficiency and increases packet loss. So, designers of VANET systems need to aim for a balance between privacy protection on the one and performance on the other hand. The results of this paper provide advise on how to achieve this balance.
Abstract-In this paper we present the Secure Dynamic Source Routing protocol for Mobile Ad hoc Networks that prevents a lot of potential attacks to these kind of networks. We also present a number of similar protocols and compare the different approaches. After a detailed description of SDSR, we show that the stated security goals are met using the BAN logic formalism.
In this paper we inspect the possibilities of using Bluetooth for building Ad-Hoc networks suitable for transmitting audio and esp. voice data using synchronous SCO links. We analyze the features or problems that Bluetooth offers for transmitting audio data in a multihop network. As the existing MANET routing protocols that emerged out of the work of the IETF MANET WG (like AODV, DSR etc.) can not be directly used to work with Bluetooth, we present a new routing protocol called Bluetooth Scatternet Routing (BSR) that is influenced by other MANET routing protocols but pays special attention to the restrictions of Bluetooth (like number of connections, connection setup times etc.). The protocol is also inspired by the channel switching concept of ATM. Some initial results of simulations and real-life tests give an impression of the performance and efficiency this protocol can reach in an application scenario.
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