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- W2952384017 abstract "Vehicular safety applications based on DSRC/802.11p have strict reliability requirement (greater than 0.99). However, it is difficult to achieve high reliability in wireless medium as the transmission is vulnerable to various wave propagation issues. To the best of our knowledge, none of the existing emergency message dissemination schemes in the literature, achieves a predefined reliability in lossy channel. In this paper, we propose a novel scheme, called reliable emergency message dissemination scheme (REMD), which achieves a predefined reliability for message dissemination while satisfying delay requirements, for various channel conditions. We aim to guarantee very high reliability (e.g., 99%) in each hop, with low control overhead while keeping low end-to-end latency for time-critical applications. We employ zero-correlated unipolar orthogonal codes to combat hidden terminal problem. We exploit periodic beacons, to accurately estimate reception quality of 802.11p wireless link in each cell; then, we use this information to determine the optimal number of broadcast repetitions in each hop. In addition, to ensure reliability in multi-hop, we utilize cooperative communication. The simulation results show that REMD outperforms the existing well-known schemes in the literature. Furthermore, REMD satisfies latency requirements for time-critical vehicular applications and has less network overhead than the existing schemes." @default.
- W2952384017 created "2019-06-27" @default.
- W2952384017 creator A5042934326 @default.
- W2952384017 creator A5049483252 @default.
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- W2952384017 date "2020-03-01" @default.
- W2952384017 modified "2023-09-30" @default.
- W2952384017 title "Reliable Emergency Message Dissemination Scheme for Urban Vehicular Networks" @default.
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- W2952384017 doi "https://doi.org/10.1109/tits.2019.2902850" @default.
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