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车载自组织网络中基于邻居节点数估计的最小竞争窗口调整算法 被引量:1

Study on Minimum Contention Window Size Adjustment Algorithm Based on Neighbor Nodes Number Estimation in Vehicular Ad Hoc Network
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摘要 针对基于IEEE 802.11p的车载自组织网络(VANET)中控制信道上周期性广播的可扩展性问题,提出了一种基于邻居节点估计的最小竞争窗口调整算法。首先,在IEEE 802.11广播退避的马尔可夫模型的基础上,以最小化碰撞概率为目的,推导出最小竞争窗口(CWmin)和活跃节点数n之间的关系;然后,利用周期性广播的beacon消息的特点对节点的邻居节点数进行实时估计,并根据估计的邻居节点数动态调整最小竞争窗口;最后,对提出的算法和IEEE 802.11p固定CWmin方法进行仿真比较分析。结果表明,提出的算法在广播接收率上优于原始方法。 In order to solve the periodic broadcast scalability of IEEE 802.lip-based VANET on control channel, a minimum contention window adjustment algorithm based on neighbor nodes number estimation was proposed. First of all, in order to minimize the collision probability, the relationship between minimum contention window (CWmin) and active node number n was deduced on the basis of Markov model IEEE 802.11 broadcast backoff. Then minimum contention window was adjusted dynamically by estimating the number of neighbor nodes in real time. Finally, the proposed algorithm and the original's fixed CWmin method were compared by simulation, and the results show that the proposed algorithm is superior to the original method in broadcast reception rate.
出处 《电信科学》 北大核心 2013年第6期82-88,99,共8页 Telecommunications Science
基金 国家自然科学基金资助项目(No.61201162) 教育部博士点基金资助项目(No.20123223120001) 国家博士后基金资助项目(No.2012M511790) 江苏省属高校自然科学研究基金资助项目(No.12KJB510020) 南京邮电大学科研基金资助项目(No.NYZ11005)
关键词 车载自组织网络 周期性广播 退避 最小竞争窗口 vehicular Ad Hoc network, periodic broadcast, backoff, minimum contention window
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参考文献19

  • 1Hartenstein H, Laberteaux K P. A tutorial survey on vehicular Ad Hoc networks. IEEE Communications Magazine, 2008, 46(6): 164-171. 被引量:1
  • 2Uzcategui R, Acosta M G. Wave: a tutorial. IEEE Communications Magazine, 2009, 47 ( 5 ): 126-133.IEEE 802.11p. 被引量:1
  • 3Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 6: Wireless Access in Vehicular Environments. IEEE Standards Association, 2010. 被引量:1
  • 4Eenennaam M, Woherink W K, Karagiannis G, et al. Exploring the solution space of beaconing in VANETs. IEEE 2009 Vehicular Networking Conference (VNC), Tokyo, Japan, 2009:1-8. 被引量:1
  • 5Oliveira R, Bernardo L, Pinto P. The influence of broadcast traffic on IEEE 802.11 DCF networks. Computer Communications, 2009, 32(2): 439-452. 被引量:1
  • 6Li J, Blake C, Couto D D, et ol. Morris capacity of Ad Hoe wireless networks. Proceedings of the 7th ACM Annum International Conference on Mobile Computing and Networking, Rome, Italy, 2001:61-69. 被引量:1
  • 7Le L, Festag A, Baldessari R, et al. Vehicular wireless short-range communication for improving intersection safety. IEEE Communications Magazine, 2009, 47 (11): 104- 110. 被引量:1
  • 8Torrent-Moreno M, Mittag J, Sami P, et al. Vehicle-to-vehicle communication: fair transmit power control for safety-critical information. IEEE Transactions on Vehicular Technology, 2009, 58 (7): 3684- 3703. 被引量:1
  • 9Mertens Y, Wellens M, Mahonen P. Simulation-based performance evaluation of enhanced broadcast schemes for IEEE 802.11-based vehicular networks. IEEE 67th Vehicular Technology Conference, Marina Bay, Singapore, 2008:3042-3046. 被引量:1
  • 10Bianchi G. Performance analysis of the IEEE 802.11 distributed coordination function. IEEE Journal on Selected Areas in Communications, 2000, 18(3): 535-547. 被引量:1

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