摘要
给出基于时隙与数据帧相结合的组网算法,以缓解同频组网的多设备通信冲突。根据基站扫描情况为各设备分配时隙,并设立保护间隔。在传输时隙内,发送特殊格式的数据帧实现时隙校准。引入基站预扫描可提高时隙分配的准确性,借助数据帧校准可减少时钟漂移。对LoRa组网的测试结果显示,所给算法相比于单一时隙算法,有更好的网络稳定性和更低的网络丢包率。
A networking algorithm based on both time slot and data frame is presented to mitigate the multi-device communication conflict in the same frequency network. According to the base station scanning, time slots are allocated to each device, thereupon, protective intervals are set between them. In transmission slot, a special format data frame is transmitted to achieve slot calibration . The accuracy of slot allocation can be improved by introducing base station scanning, and clock drift can be reduced by data frame calibration. The test results on LoRa network show that the proposed algorithm has better network stability and lower packet loss rate than the single slot algorithm.
作者
李波
王坤
王彦本
LI Bo;WANG Kun;WANG Yanben(School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China)
出处
《西安邮电大学学报》
2019年第2期26-30,共5页
Journal of Xi’an University of Posts and Telecommunications
基金
陕西省自然科学基础研究计划资助项目(2016JM6017)
关键词
时隙
数据帧
同频组网
LoRa
time slot
data frame
same frequency networking
LoRa
