Analysis and Research on Polling Scheduling Algorithm of Intelligent Distribution Network System
Journal Title: International Journal of engineering Research and Applications - Year 2019, Vol 9, Issue 1
Abstract
Ethernet passive optical network (EPON) is an important development direction for the construction of intelligent distribution network access layer communication system. According to the service quality requirements of each service of smart distribution network, especially the development of new protection and control technology based on network communication, a scheduling-based asymmetric polling control algorithm is proposed. The arrival time of the information packet entering the queue at any time, the query conversion time between the service time and the queue is a random variable, and the arrival time of the information packet of the optical line terminal to the queue is confirmed on the basis of ensuring the EPON polling rate. The service time and the query conversion time between the queues are dynamically allocated to better meet the actual communication requirements of different services. In addition, for the proposed dynamic scheduling algorithm, the mathematical model of the system is established by combining the Markov chain and the probabilistic parent function. For its partial guidance, several important system operating parameters such as the system's circular query period, average queue length and average waiting delay are analyzed. The theoretical calculated values are approximately consistent with the simulated simulation values, indicating the correctness of the theoretical analysis method. Compared with the symmetric full service system, the asymmetric system is more suitable for the actual communication requirements of different services and multi-channel multiple access.
Authors and Affiliations
Zhi-Jun Yang, Zheng Liu, Yang-Yang Sun
Keywords
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- EP ID EP445296
- DOI 10.9790/9622- 0901026570.
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