计算机科学 ›› 2016, Vol. 43 ›› Issue (6): 106-111.doi: 10.11896/j.issn.1002-137X.2016.06.022
胡显俊,陈建新,周生强,李一帆
HU Xian-jun, CHEN Jian-xin, ZHOU Sheng-qiang and LI Yi-fan
摘要： IEEE 802.15.4协议的GTS分配机制能够支持实时和延迟约束的应用,目前已经应用于医疗健康、工业控制和楼宇自动化等物联网领域。但是,在高速实时异构数据传输应用中仍然存在局限性,它不能解决多于7个设备需要实时服务、时延约束小于超帧长度以及不同周期异构数据传输等问题。为了摆脱这些限制,提出一种新的支持异构数据通信的IEEE 802.15.4实时带宽分配算法,其根据不同周期任务的数据传输信息,调整部分传输任务的发送时间。性能分析显示,该算法可以严格遵循时延约束条件,满足异构数据通信,提高带宽利用率,提升整个网络的性能。
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