**5. Conclusion**

In this book chapter, we adopt a prioritized polling system which combines exhaustive service with gated service, i.e., gated service is used in ordinary sites with low priority, and exhaustive service is used at central sites with high priority. Then a two-level priority service model is constructed by using the service mechanism of parallel pattern. The average queue length and average waiting delay of the service model are accurately analyzed by using embedded Markov chain and probability generating function, and verified by simulation experiments. The results show that the system can distinguish the business with different priorities, the average queue length and average waiting delay of users are lower, and the quality of service of the system is higher.

#### **Acknowledgements**

This work was supported by the National Natural Science Foundation of China under Grant No. 61461054 and No. 61461053.

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### **Author details**

Zhijun Yang1,2\* and Lei Mao1

1 School of Information Science and Technology, Yunnan University, Kunming, Yunnan, China

2 Educational Department of Yunnan Province, Educational and Scientific Institute, Kunming, Yunnan, China

\*Address all correspondence to: 1281333130@qq.com

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*Research on Polling Control System in Wireless Sensor Networks DOI: http://dx.doi.org/10.5772/intechopen.93507*
