CAJ | 학술논문

简单介绍了IEEE802.15.4标准中特有的GTS算法。基于OPNET仿真平台，设计了不同网络环境下的仿真实验。研究了超帧参数SO、数据到达率和IFS参数对GTS吞吐量、耗费带宽以及分组介质接入时延的影响。结果表明，对于高数据到达率时，低SO值和SIFS时，实现了GTS分配的最大化利用以及最小介质接入时延；高SO值和LIFS时，既没有保障GTS分配的最大化利用，反而还加大了分组介质接入时延，不适合时间敏感性强的无线传感器网络。
간단개소료IEEE802.15.4표준중특유적GTS산법。기우OPNET방진평태，설계료불동망락배경하적방진실험。연구료초정삼수SO、수거도체솔화IFS삼수대GTS탄토량、모비대관이급분조개질접입시연적영향。결과표명，대우고수거도체솔시，저SO치화SIFS시，실현료GTS분배적최대화이용이급최소개질접입시연；고SO치화LIFS시，기몰유보장GTS분배적최대화이용，반이환가대료분조개질접입시연，불괄합시간민감성강적무선전감기망락。
The unique GTS mechanism in IEEE802. 15. 4 standard is simply described, the impacts of SO ( Superframe Order) ,data arrival rate and IFS on GTS mechanism performance are discussed, through va-rious simulation experiments based on OPNET software under different network conditions. Simulation re-sults show that the maximum utilization of allocated GTS and minimal packet medium access delay are a-chieved in low SO value and SIFS for applications with high data arrival rate. However,it is not suitable for time-sensitive wireless sensor networks,for this mechanism could neither achieve the maximum utilization of allocated GTS, nor decrease the packet medium access delay for high SO value and LIFS.