| VANET网络中一种支持优先级区分的新机制* |
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| 引用本文： | 谢海波,崔毅东,徐惠民.VANET网络中一种支持优先级区分的新机制*[J].计算机应用研究,2007,24(5):250-252. |
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| 作者姓名： | 谢海波 崔毅东 徐惠民 |
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| 作者单位： | 北京邮电大学,电信工程学院,北京,100876 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 提出一种支持优先级区分的MAC机制,并引入了两种新的操作机制,即接力传输和接力中断.受IEEE 802.11协议段突发机制启发,对于高优先级业务,MAC帧由源端被接力传输至目的端;对于不同优先级的业务,产生不同次数的接力中断.每次接力中断增加一次信道竞争,由此达到不同优先级业务的区分.NS-2仿真证明了该机制的有效性.
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| 关 键 词： | 车载自组网络 优先级区分 IEEE 802.11 段突发 接力传输 接力中断 网络 支持优先级 新机制 Differentiation Priority Mechanism 有效性 仿真 信道竞争 优先级业务 同优先级 目的端 源端 IEEE 中断 接力传输 操作机制 |
| 文章编号： | 1001-3695（2007）05-0250-03 |
| 修稿时间： | 2006-03-032006-04-18 |
Novel MAC Mechanism with Priority Differentiation for VANET |
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| XIE Hai bo,CUI Yi dong,XU Hui min.Novel MAC Mechanism with Priority Differentiation for VANET[J].Application Research of Computers,2007,24(5):250-252. |
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| Authors: | XIE Hai bo CUI Yi dong XU Hui min |
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| Affiliation: | (School of Telecommunication Engineering, Beijing University of Posts & Telecommunications, Beijing 100876, China) |
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| Abstract: | A new MAC mechanism for priority differentiation was proposed. Inspired by IEEE 802.11 fragment burst, two new terms named frame-relay and relay-interruption were introduced for different priority applications, With frame-relay, top priority applications could be delivered from source node to destination with minimum contention. For different priority traffic, different times of frame-interruption were applied. NS-2 simulation demonstrated the feasible of the proposed approach. |
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| Keywords: | VANET priority differentiation IEEE 802 11 fragment burst frame relay relay-interruption |
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