[1]卜翔,章韵,陈建新.IEEE 802.15.4支持高速实时数据传送算法[J].计算机技术与发展,2013,(03):14-18.
　BU Xiang,ZHANG Yun,CHEN Jian-xin.A Rapid and Real-time Data Transmission Algorithm for IEEE 802. 15. 4[J].,2013,(03):14-18.
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IEEE 802.15.4支持高速实时数据传送算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2013年03期
页码:
14-18
栏目:
智能、算法、系统工程
出版日期:
1900-01-01

文章信息/Info

Title:
A Rapid and Real-time Data Transmission Algorithm for IEEE 802. 15. 4
文章编号:
1673-629X（2013）03-0014-05
作者:
卜翔; 章韵; 陈建新
南京邮电大学
Author(s):
BU Xiang; ZHANG Yun; CHEN Jian-xin
关键词:
IEEE; 802.; 15.; 4; 保护时槽; 实时性; 调度; EDF
Keywords:
IEEE 802. 15. 4; GTS; real-time; scheduling; EDF
文献标志码:
A
摘要:
随着物联网应用的推广,出现了更多的低功耗高速率实时通信技术需求. IEEE 802.15.4是低功耗通信既定标准,但对高速实时传输研究较少.它不能解决多于七个设备需要实时服务、时延约束小于超帧长度的问题.为了克服这些限制,文中在EGSA算法基础上,最大化IEEE 802.15.4中CFP,保留足够多的带宽资源用于实时业务传输.为了进一步提高效率,把CFP分割成多个微小时隙,并使用最早截止时间优先(EDF)策略分配这些微小时隙.性能分析显示这种策略可以严格遵循时延约束条件,并可以提高带宽利用率
Abstract:
With the promotion of the Internet of Things,low-power high-speed real-time communication technology is more necessary. IEEE 802. 15. 4 is a standard of low-power communications,but few studies on high-speed real-time transmission. It cannot solve the problem where more than seven devices require time-sensitive services,and the delay constraints are smaller than the superframe dura-tion. To overcome these limitations,based on the EGSA,maximize the available Contention Free Period (CFP),to guarantee enough bandwidth for real-time service. To further enhance efficiency,the CFP is divided into multiple small time slots which are allocated under Earliest Deadline First ( EDF) scheduling policy. Performance analysis reveals that delay constraints are guaranteed efficiently and the bandwidth utilization is improved significantly

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更新日期/Last Update: 1900-01-01