基于GPS的WiFi信道分配算法设计与实现
发布时间：2019-01-26 08:47
【摘要】：随着世界范围内物联网的发展,该技术逐渐在医疗领域投入应用,并很快的得到了快速的推广。而在目前医疗物联网的应用领域中,无线电子健康(WeHealth)系统的研究一直走在前列,该系统与传统的健康监护系统不同,它融合了医疗物联网的应用模式,同时更关注无线传输技术的应用,该系统中,医疗数据的感知和传输更加高效、方便。 本文首先阐述了医疗物联网的概念及其总体架构、关键技术,进而介绍了医疗物联网中的WiFi信道分配问题；然后针对WeHealth的主体架构和应用模式,分析了WeHealth场景下的WiFi信道分配问题,我们看到,在WeHealth场景中,13个信道分配给AP的时候,如果分配不优AP之间将会存在干扰,导致系统吞吐量下降。 接着,本文对WeHealth系统的应用需求进行了详细的分析,并在需求分析的基础上,对WeHealth系统中设备的硬件架构进行了设计,在设计中,我们提出了对网关AP设备集成GPS模块的设计思路,这为新的算法的实现提供了硬件基础。文章紧接着实现了硬件模块的应用软件编写,为新算法的实现提供了软件基础。 本文紧接着提出了基于GPS的WiFi信道分配算法。该算法是一种集中式算法,中央协调器获得所有AP的GPS位置信息,并通过相应的算法合理的将13个WiFi信道分配给相应的AP,使得AP之间的干扰达到最优化,本文最后在Android系统上对该算法进行了实现,并与传统算法进行了对比,结果表明新算法中,系统的吞吐量得到了很大的提高,干扰得到了很好的抑制。 WeHealth作为医疗物联网领域中的新兴的应用模式,具有明朗的发展前景。对于WiFi信道分配的研究和实现,可以显著的提高WeHealth场景中无线传输的质量。对于信道分配的深入研究,对于WeHealth系统监控的智能化,提高系统的可靠性具有很深远的意义。
[Abstract]:With the development of the Internet of things in the world, the technology has been applied in the medical field, and has been quickly popularized. In the field of medical Internet of things, the research of wireless electronic health (WeHealth) system has been in the forefront. This system is different from the traditional health monitoring system. It combines the application mode of medical Internet of things. At the same time, more attention is paid to the application of wireless transmission technology. In this system, the perception and transmission of medical data is more efficient and convenient. In this paper, the concept of the medical Internet of things and its general structure, key technologies, and then the WiFi channel allocation in the medical Internet of things are introduced. Then we analyze the problem of WiFi channel allocation in WeHealth scenario according to the main structure and application mode of WeHealth. We can see that when 13 channels are allocated to AP in WeHealth scenario, if the allocation is not optimal, there will be interference between them. Resulting in system throughput decline. Then, this paper analyzes the application requirements of WeHealth system in detail, and on the basis of requirement analysis, designs the hardware structure of the equipment in WeHealth system. We propose the design idea of the gateway AP device integrated GPS module, which provides the hardware foundation for the implementation of the new algorithm. The application software programming of the hardware module is realized, which provides the software foundation for the realization of the new algorithm. Then we propose a WiFi channel allocation algorithm based on GPS. This algorithm is a centralized algorithm. The central coordinator obtains the GPS position information of all AP, and reasonably allocates 13 WiFi channels to the corresponding AP, through the corresponding algorithm to optimize the interference between AP. Finally, the algorithm is implemented on Android system and compared with the traditional algorithm. The results show that the throughput of the new algorithm is greatly improved and the interference is well suppressed. As a new application mode in the field of medical internet of things, WeHealth has a bright future. The research and implementation of WiFi channel allocation can significantly improve the wireless transmission quality in WeHealth scenarios. The research on channel allocation is of great significance to the intelligent monitoring of WeHealth system and improving the reliability of the system.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN92
本文编号：2415318
[Abstract]:With the development of the Internet of things in the world, the technology has been applied in the medical field, and has been quickly popularized. In the field of medical Internet of things, the research of wireless electronic health (WeHealth) system has been in the forefront. This system is different from the traditional health monitoring system. It combines the application mode of medical Internet of things. At the same time, more attention is paid to the application of wireless transmission technology. In this system, the perception and transmission of medical data is more efficient and convenient. In this paper, the concept of the medical Internet of things and its general structure, key technologies, and then the WiFi channel allocation in the medical Internet of things are introduced. Then we analyze the problem of WiFi channel allocation in WeHealth scenario according to the main structure and application mode of WeHealth. We can see that when 13 channels are allocated to AP in WeHealth scenario, if the allocation is not optimal, there will be interference between them. Resulting in system throughput decline. Then, this paper analyzes the application requirements of WeHealth system in detail, and on the basis of requirement analysis, designs the hardware structure of the equipment in WeHealth system. We propose the design idea of the gateway AP device integrated GPS module, which provides the hardware foundation for the implementation of the new algorithm. The application software programming of the hardware module is realized, which provides the software foundation for the realization of the new algorithm. Then we propose a WiFi channel allocation algorithm based on GPS. This algorithm is a centralized algorithm. The central coordinator obtains the GPS position information of all AP, and reasonably allocates 13 WiFi channels to the corresponding AP, through the corresponding algorithm to optimize the interference between AP. Finally, the algorithm is implemented on Android system and compared with the traditional algorithm. The results show that the throughput of the new algorithm is greatly improved and the interference is well suppressed. As a new application mode in the field of medical internet of things, WeHealth has a bright future. The research and implementation of WiFi channel allocation can significantly improve the wireless transmission quality in WeHealth scenarios. The research on channel allocation is of great significance to the intelligent monitoring of WeHealth system and improving the reliability of the system.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN92
【参考文献】
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