面向物联网的IEEE 802.11ah低功耗技术改进

发布时间：2018-02-17 03:48

本文关键词： 物联网低功耗多用户目标唤醒时间传输时延　出处：《陕西师范大学学报(自然科学版)》2017年02期 　论文类型：期刊论文

【摘要】：针对IEEE 802.11ah协议中的功率管理问题,提出了改进的目标唤醒时间(TWT)机制,它能够在多用户场景下通过接入点管理终端的苏醒时间,使不同终端在不同时间唤醒进行传输,这样既通过减少终端的苏醒时间降低了功耗,又限制了同时接入信道的终端数量从而减少碰撞。进一步考虑非TWT终端,则由接入点根据缓存数据量分配一段未预定TWT的连续时间段对非TWT终端数据进行单独传输。实验仿真表明,该方案能够降低了终端功耗,并减少传输时延,能够更好满足物联网低功耗应用需求。
[Abstract]:Aiming at the problems of power management IEEE in 802.11ah protocol, proposed an improved target wakeup time (TWT) mechanism, it can through the access point management terminal recovery time in multi-user scenarios, the different terminals in different time wake up for transmission, so as to reduce the recovery time through the terminal to reduce power consumption, and at the same time limit the number of terminals to access the channel so as to reduce collision. Further considering non TWT terminal, the access point according to the data cache allocation of continuous time segments not scheduled TWT separately for non TWT data transmission terminal. Simulation shows that the scheme can reduce the power consumption of the terminal, and reduce the transmission delay, can better meet. Network low power applications.

【作者单位】：天津大学电子信息工程学院;
【基金】：国家自然科学基金(61471260)
【分类号】：TN929.5;TP391.44

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