| 摘要: |
| 指出了现有的基于不定长时隙的DCF协议马尔可夫链模型的局限性,并在详细分析多跳ad hoc 网络环境中DCF 协议建模的难点问题基础上,提出了一种基于定长时隙的多跳ad hoc 网络DCF 协议马尔可夫链模型.通过模型的求解,得到了反映多跳ad hoc 网络饱和吞吐量性能的相关性能指标的理论值,并结合GloMoSim 网络仿真环境中的仿真实验,证明了模型的有效性. |
| 关键词: ad hoc 网络 DCF 协议 模型 定长时隙 马尔可夫链 |
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| 基金项目:Supported by the Aeronautical Science Foundation of China under Grant No.20090152001 (航空科学基金); the National Science Foundation of Jiangsu Higher Education Institutions of China under Grant No.09KJB520007 (江苏省高校自然科学研究项目); the Perspective Research Foundation of Production Study and Research Alliance of Jiangsu Province of China under Grant No.BY2009100(江苏省产学研前瞻性联合研究项目); the Scientific Research Activate Funding of NUAA of China under Grant No.S0918-042 (南京航大科研启动基金) |
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| Markov Model of DCF Protocol Based on Fixed Slot in Multi-Hop Ad Hoc Networks |
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LEI Lei1,XU Zong-Ze,CAI Wei-Ling
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| Abstract: |
| This paper points out the limitations of the existing Markov model of DCF protocol based on un-fixed slot in ad hoc networks, and analyzes the difficulty of the modeling of DCF protocol in multi-hop ad hoc networks in detail. On the basis of this, this paper proposes a Markov model of DCF protocol based on fixed slot in multi-hop ad hoc networks. By solving this model, the theoretic value which reflects the saturated throughput performance of multi-hop ad hoc networks is obtained. The effectiveness of this model is demonstrated by the simulations in GloMoSim environment. |
| Key words: ad hoc network DCF protocol model fixed slot Markov chain |
