Research on Autonomous 6TiSCH Network Resource Demand Calculation Based on Queuing Theory

IETF established the working group of 6TiSCH (IPv6 over the TSCH Mode of IEEE 802. 15.4e) standard, aiming to develop a set of industrial wireless protocol stack that integrates low power short-range wireless communication technology and IPv6 technology, which can solve the IP access problem of nodes in industrial field. And to achieve communication reliability and certainty under resource constraints. Resource scheduling has always been an important method to optimize network delay, energy consumption and reliability based on the deterministic TSCH network. Autonomous network resource scheduling can avoid additional information interaction and has better flexibility. This paper proposes an autonomous network resource demand calculation method based on queuing theory. The method can accurately calculate the mathematical expectation of packet queuing length and the average amount of occupied resources in nodes, considering the success rate of communication resource transmission and the limited cache space of nodes. By comparison with MSF, the mathematical model of autonomous resource demand calculation based on queuing theory solves two core problems: when to trigger scheduling and how to determine the number of scheduling resources. In addition, this model avoids frequent scheduling operations that simply compare the number of packets and the amount of communication resources. This paper provides a solution for resource quantity calculation of resource scheduling in 6TiSCH network.