arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.07097cs.NI
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IEEE 802.11 ad中CBAP分配的分析模型

An Analytical Model for CBAP Allocations in IEEE 802.11ad

Chiara Pielli, Tanguy Ropitault, Nada Golmie, Michele Zorzi

摘要:

IEEE 802.11ad标准将WiFi操作扩展到毫米波频率,并且引入了关于物理(PHY)和介质访问控制(MAC)层的新颖特征。然而,虽然有大量的研究工作来开发用于建立和维护毫米波通信的定向链路的机制,但较少的工作涉及传输调度和该标准引入的混合MAC。混合MAC层提供两种不同类型的资源分配:基于竞争的接入周期(CBAP)和无竞争服务周期(SP)。在本文中,我们提出了一个马尔可夫链模型来表示CBAP,它考虑到由于预定的SP和耳聋和隐藏节点的问题,定向通信加剧了操作中断。我们还提出了一个数学分析,以评估站之间的干扰。我们推导出解析表达式来评估各种传输参数和数据传输间隔配置对一些关键性能指标,如吞吐量,延迟和丢包率的影响。该信息可以用于有效地设计传输调度器,该传输调度器基于应用要求来分配基于竞争的时段和无竞争的时段。

英文摘要:

The IEEE 802.11ad standard extends WiFi operation to the millimeter wave frequencies, and introduces novel features concerning both the physical (PHY) and Medium Access Control (MAC) layers. However, while there are extensive research efforts to develop mechanisms for establishing and maintaining directional links for mmWave communications, fewer works deal with transmission scheduling and the hybrid MAC introduced by the standard. The hybrid MAC layer provides for two different kinds of resource allocations: Contention Based Access Periods (CBAPs) and contention free Service Periods (SPs). In this paper, we propose a Markov Chain model to represent CBAPs, which takes into account operation interruptions due to scheduled SPs and the deafness and hidden node problems that directional communication exacerbates. We also propose a mathematical analysis to assess interference among stations. We derive analytical expressions to assess the impact of various transmission parameters and of the Data Transmission Interval configuration on some key performance metrics such as throughput, delay and packet dropping rate. This information may be used to efficiently design a transmission scheduler that allocates contention-based and contention-free periods based on the application requirements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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