Scheduling for Data Transmission in Multi-Hop IEEE 802.15.4e TSCH Networks

TSCH is one of the access behavior modes defined in the IEEE 802.15.4e standard. It combines time slotted access with multi-channel and channel hopping capabilities. TSCH is a trend used as the underlying architecture of the Internet of Things. However, IEEE 802.15.4e defines when the MAC executes a schedule but it does not specify how the schedule is built. This paper focuses on the problem of data transmission scheduling for TSCH network which uses the IEEE802 .15.4e TSCH as the MAC protocol. We adopt matching rule to resolve conflicts in the TSH network and matching scheduling algorithm(MSA) to solve the problem of communication resources allocation in tree topology. The scheduling algorithm MSA can avoid conflict, reduce the delay and energy consumption. OSA is proposed by further optimization of MSA. Through simulation experiments, the proposed method can effectively shorten the time delay, reduce the energy consumption and reduce the utilization rate of the channel.