| |
| 科研成果 |
|
|
 |
|
| 论文题目： |
Scheduling for emergency tasks in industrial wireless sensor networks |
| 第一作者： |
Xia ZQ(夏长清);Jin X(金曦);Kong LH(孔令和);Zeng P(曾鹏) |
| 参与作者： |
|
| 联系作者： |
|
| 发表刊物： |
Sensors (Switzerland) |
| 发表年度： |
2017 |
| 卷,期,页： |
17,7,1-24 |
| 论文出处： |
|
| 第一作者所在部门： |
|
| 论文编号： |
|
| 论文摘要： |
Wireless sensor networks (WSNs) are widely applied in industrial manufacturing systems. By means of centralized control, the real-time requirement and reliability can be provided by WSNs in industrial production. Furthermore, many approaches reserve resources for situations in which the controller cannot perform centralized resource allocation. The controller assigns these resources as it becomes aware of when and where accidents have occurred. However, the reserved resources are limited, and such incidents are low-probability events. In addition, resource reservation may not be effective since the controller does not know when and where accidents will actually occur. To address this issue, we improve the reliability of scheduling for emergency tasks by proposing a method based on a stealing mechanism. In our method, an emergency task is transmitted by stealing resources allocated to regular flows. The challenges addressed in our work are as follows: (1) emergencies occur only occasionally, but the industrial system must deliver the corresponding flows within their deadlines when they occur; (2) we wish to minimize the impact of emergency flows by reducing the number of stolen flows. The contributions of this work are two-fold: (1) we first define intersections and blocking as new characteristics of flows; and (2) we propose a series of distributed routing algorithms to improve the schedulability and to reduce the impact of emergency flows. We demonstrate that our scheduling algorithm and analysis approach are better than the existing ones by extensive simulations. |
| 论文全文： |
|
| 其他备注： |
|
| 附件下载： |
|
|
|
