计算机工程2019，Vol.45Issue(2)：42-52,11.DOI:10.19678/j.issn.1000-3428.0050862
工业物联网密集场景中的演进型时隙分配机制
Evolutionary Slot Allocation Mechanism for Industrial Io T Dense Scenario
摘要
Abstract
With the increase of industrial wireless sensor devices numbers, the traditional IEEE 802. 15. 4 CSMA/CA protocol cannot effectively meet the industrial Wireless Sensor Network (WSN) dense scenario. Therefore, this paper proposes an evolved time slot allocation mechanism which can provide an effectively time slot allocation strategy for this scenario. A set of allocable time slots is constructed according to the current maximum number of time slots, the position index is calculated based on the backoff state index and the random backoff counter the time slot allocation equation is obtained. The state transition model is established by evolving the CSMA/CA protocol. Simulation expenimented results show that the mechanism can improve the fairness of the time slot allocation and the transmission hit rate in dense scenes and reduce the data transmission delay.关键词
IEEE 802.15.4 CSMA/CA协议/工业无线传感器网络/密集场景/演进型时隙分配机制/数据延迟Key words
IEEE 802.15.4 CSMA/CA protocol/industrial Wireless Sensor Network (WSN)/dense scenes/evolved time slot allocation mechanism/data delay分类
信息技术与安全科学引用本文复制引用
许浩然,刘广钟,贾建鑫..工业物联网密集场景中的演进型时隙分配机制[J].计算机工程,2019,45(2):42-52,11.基金项目
国家自然科学基金 (61202370) （61202370）
上海市教委科研创新项目 (14YZ110) （14YZ110）
中国博士后科学基金 (2014M561512) （2014M561512）
上海海事大学创新基金 (2017ycx064). （2017ycx064）
