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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ben-Jye Chang Ying-Hsin Liang Jiun-Ting Lai |
| Copyright Year | 2014 |
| Description | Author affiliation: Dept. of Comput. Sci. & Inf. Eng., Nat. Yunlin Univ. of Sci. & Technol., Douliou, Taiwan (Ben-Jye Chang; Jiun-Ting Lai) || Dept. of Multimedia Animation & Applic., Nan Kai Univ. of Technol., Nantou, Taiwan (Ying-Hsin Liang) |
| Abstract | IEEE 802.11p is proposed as the VANET wireless MAC interface for the transmissions of emergency messages in V2V and V2I Communications. However, in a high mobility VANET, QoS of both the emergency message (EM) and handoff transmissions suffer from high collision probability of the contention-based media access mechanism and high interference exhibiting near the cell-edge that encodes a low coding rate of the Adaptive Modulation and Coding (AMC) scheme. Thus, this paper proposes an efficient MAC for IEEE 802.11p to solve above critical issues, in which the approach consists of three main mechanisms: 1) the Sigmoid-based CW Decrease (SWD) algorithm, 2) the Dynamic Initial CW (DIW) algorithm, and 3) Relay-based partition Collision Domain for Handoffs (RCDH). Note that the CW decrease formulation is determined based on the Sigmoid function. Numerical results demonstrate that the analysis results are close to the simulation results, and thus justify the correctness of the mathematical analytical model. In addition, the proposed approach outperforms the compared approaches (including the IEEE 802.11p std.) in EM transmission delay, collision probability, throughput, and MAC frame dropping probability. |
| Starting Page | 635 |
| Ending Page | 640 |
| File Size | 2202965 |
| Page Count | 6 |
| File Format | |
| e-ISBN | 9781479967292 |
| DOI | 10.1109/ICCVE.2014.7297626 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-11-03 |
| Publisher Place | Austria |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Analytical models Contention window IEEE 802.11p Heuristic algorithms Optimized production technology Vehicular ad hoc networks Markov chain model Markov processes VANET Throughput Sigmoid function Vehicles |
| Content Type | Text |
| Resource Type | Article |
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