基于ZigBee的多信道干扰避免研究与应用

发布时间：2018-03-15 11:57

本文选题：ZigBee干扰分析　切入点：信道冲突　出处：《内蒙古大学》2017年硕士论文　论文类型：学位论文

【摘要】：在ZigBee技术设计之初,为了保证其通用性以便于ZigBee技术的推广,其物理层工作频段除欧洲的868MHz频段和美国的915MHz频段,大部分选择了免费的2.4GHz-ISM频段,2.4GHz ISM频段是面向工业、科学、医学三大机构的免费频段,无需授权许可,只要遵循一定的规则就可免费使用,而随着无线技术的发展,这一频段势必日益拥挤,ZigBee设备无可避免的将受到工作于此频段的其它无线通信技术的影响。针对上述问题本文展开了 IEEE 802.15.4网络在IEEE 802.11系统、蓝牙、Wireless USB设备的干扰下的丢包率、通信质量、多信道的干扰避免方法等研究,分别进行了 WLAN、蓝牙、无线USB等设备对IEEE 802.15.4网络信道干扰的理论研究与实验,得出了 IEEE802.11系统、蓝牙、无线USB对IEEE802.15.4网络的具体影响情况,并研究设计了一种基于多信道的ZigBee网络通信质量下降严重时,孤立节点的跳频方法,确保了孤立节点在原网络信道通信受阻的情况下,可以加入位于其它信道的网络而非脱离网络,进而增强了网络的健壮性。对于在2.4GHz频段多种设备的共存,以及ZigBee网络的健壮性和冲突下的ZigBee网络通信质量的保障具有一定的意义。
[Abstract]:At the beginning of ZigBee technology design, in order to ensure its generality so as to facilitate the popularization of ZigBee technology, its physical layer working frequency band except Europe's 868MHz band and American's 915MHz band, most chose the free 2.4GHz-ISM frequency band and 2.4GHz ISM band is oriented to industry and science. The free frequency bands of the three major medical institutions do not require licensing, but can be used free of charge as long as they follow certain rules, and with the development of wireless technology, This frequency band is bound to become increasingly crowded and will inevitably be influenced by other wireless communication technologies working in this band. In view of the above problems, the packet loss rate of IEEE 802.15.4 networks under the interference of IEEE 802.11 systems and Bluetooth wireless USB devices is discussed. Based on the research of communication quality, multi-channel interference avoidance method and so on, the theoretical research and experiment of WLAN, Bluetooth, wireless USB and other devices to IEEE 802.15.4 network channel interference are carried out, and the IEEE802.11 system, Bluetooth, Bluetooth, and so on are obtained. The influence of wireless USB on IEEE802.15.4 network is studied and a frequency hopping method of isolated node is designed when the communication quality of ZigBee network based on multi-channel drops seriously, which ensures that the isolated node is blocked in the original network channel communication. The ability to join networks located on other channels rather than detaching them enhances the robustness of networks. For coexistence of multiple devices in the 2.4 GHz band, The robustness of ZigBee network and the guarantee of communication quality of ZigBee network under conflict have certain significance.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN911.4;TN92

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