| 支持异构数据通信的IEEE 802.15.4实时带宽分配算法 |
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| 引用本文： | 胡显俊,陈建新,周生强,李一帆.支持异构数据通信的IEEE 802.15.4实时带宽分配算法[J].计算机科学,2016,43(6):106-111. |
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| 作者姓名： | 胡显俊 陈建新 周生强 李一帆 |
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| 作者单位： | 南京邮电大学“无线宽带通信与传感网络技术”教育部重点实验室 南京 210003,南京邮电大学“无线宽带通信与传感网络技术”教育部重点实验室 南京 210003,南京邮电大学“无线宽带通信与传感网络技术”教育部重点实验室 南京 210003,南京邮电大学“无线宽带通信与传感网络技术”教育部重点实验室 南京 210003 |
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| 基金项目： | 本文受中国国家自然科学基金(61201165),泛在无线通信和无线传感器网络教育部重点实验室开放课题项目(NYKL201306),江苏省高校自然科学基金(13KJB510026),同济大学嵌入式系统与服务计算教育部重点实验室项目(ESSCKF201305)资助 |
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| 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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| 关 键 词： | 无线传感网络 IEEE 802.15.4 GTS分配 实时通信 NPGAS |
| 收稿时间： | 5/5/2015 12:00:00 AM |
| 修稿时间： | 2015/7/24 0:00:00 |
IEEE 802.15.4 Real-time Bandwidth Allocation Algorithm Supporting Heterogeneous Data Communication |
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| HU Xian-jun,CHEN Jian-xin,ZHOU Sheng-qiang and LI Yi-fan.IEEE 802.15.4 Real-time Bandwidth Allocation Algorithm Supporting Heterogeneous Data Communication[J].Computer Science,2016,43(6):106-111. |
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| Authors: | HU Xian-jun CHEN Jian-xin ZHOU Sheng-qiang and LI Yi-fan |
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| Affiliation: | Key Lab.of Broadband Wireless Communication & Sensor Network Technology,Ministry of Education, Nanjing University of Posts & Telecommunications,Nanjing 210003,China,Key Lab.of Broadband Wireless Communication & Sensor Network Technology,Ministry of Education, Nanjing University of Posts & Telecommunications,Nanjing 210003,China,Key Lab.of Broadband Wireless Communication & Sensor Network Technology,Ministry of Education, Nanjing University of Posts & Telecommunications,Nanjing 210003,China and Key Lab.of Broadband Wireless Communication & Sensor Network Technology,Ministry of Education, Nanjing University of Posts & Telecommunications,Nanjing 210003,China |
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| Abstract: | GTS allocation mechanism on IEEE 802.15.4 protocol can support real time and delay constrained applications.It has been used in the Internet of Things field such as medical health,industrial control,building automation and etc.But in the applications of high-speed real-time heterogeneous data transmission,there are still some limitations.It does not support real-time services required by more than seven devices,delay constraints less than the superframe length and different periodic heterogeneous data transmission applications.To overcome these limitations,this paper proposed a new IEEE 802.15.4 real-time bandwidth allocation algorithm supporting heterogeneous data communication, and adjusted the transmission time of some of the transfer tasks according to the data transmission information of different periodic tasks.Performance analysis result shows that this algorithm is in strict compliance with delay constraints,and can meet the needs of heterogeneous data communication,improve the performance of the bandwidth utilization,and then improve the performance of the overall network. |
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| Keywords: | Wireless sensor network IEEE 802 15 4 GTS allocation Real-time communication NPGAS |
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