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مجله برنامه های کاربردی شبکه و کامپیوتر
جزئیات رویداد
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  • an adaptive approach for information dissemination in vehicular ad hoc networks

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 913
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     vehicular ad hoc networks (vanets) appeared as a subclass of manets for inter-vehicle communication. however, vanets have a relatively more dynamic nature as compared to manets concerning the network topology. the design and implementation of an efficient and scalable algorithm for information dissemination in vanets constitutes a major issue that should be tackled. indeed, in this dynamic environment, an increasing number of redundant broadcast messages will increase resource utilization, which would indirectly affect the network performance. in the past few years, several statistical-based broadcasting schemes, such as counter-based protocol, for information dissemination have been proposed in the context of manets. these schemes are based on various threshold parameters to help nodes to decide whether to rebroadcast or discard received messages. however, in dynamic networks, such as in vanets, it is difficult even impossible to determine a priori these threshold values. dynamically changing these values, to minimize the number of redundantly received messages while maintaining good latency and reachability, is a complex issue in the absence of centralized controllers or constant threshold parameters. this paper presents a decentralized and adaptive approach for information dissemination (aid) in vanets. simulations are conducted and results are presented to show that adaptive approaches have a better performance over statistical-based approaches.

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