传感技术学报2016，Vol.29Issue(3)：434-438,5.DOI:10.3969/j.issn.1004-1699.2016.03.022
面向IEEE802.15.4协议的跳频信道接入方法
Channel Access Method of Frequency-Hopping for IEEE 802.15.4 Protocol
摘要
Abstract
The channels of 2.4 GHz frequency-band of IEEE802.15.4 protocol are vulnerable to interference of Wi-Fi signals. Furthermore,a node can be sentenced as orphan node if a number of dropped Beacons is exceed to aMax⁃LostBeacons in IEEE802.15.4 protocol,and it re-scan all channels in order to synchronize Coordinator. So this may lead to decline the throughput and increase the time-consumption. In this paper,through analyzing overlapping dis⁃cipline of channels between IEEE802.15.4 with IEEE802.11,based on beacon periodicity we propose a frequency hopping function to generate the frequency-hopping sequence,which help to quickly select a communication chan⁃nel without interference. The proposed method is easy to implement,however,the payload and overhead of Beacon frame need not increase. The experimental results under Wi-Fi interference indicate that the average throughput may be increased by about 16%,and the average transmission delay is reduced from 25.86 ms to 9.07 ms.关键词
IEEE802.15.4/无线传感器网络/跳频/信道干扰/时间同步Key words
IEEE802.15.4/wireless sensor networks/frequency-hopping/channel interference/time synchronization分类
信息技术与安全科学引用本文复制引用
刘述钢,詹杰..面向IEEE802.15.4协议的跳频信道接入方法[J].传感技术学报,2016,29(3):434-438,5.基金项目
国家自然科学基金项目（61540012）)；湖南省教育厅科学研究项目（14C0442）；湖南省自然科学基金项目 （）
