Towards Rule Consistent Updates in Software-Defined Wireless Sensor Networks

摘要

The phenomenon of inconsistent network properties such as forwarding loops and packet losses may occur during rule update of software-defined wireless sensor networks. Aiming at this, the idea of scheduling the update order of sensor nodes is adopted to design the rule reverse addition strategy, rule suppression modification strategy and rule obverse deletion strategy. At the same time, parallel execution of sub-updates is supported by dividing the update domain. This method effectively improves the consistency of network update attributes and greatly enhances the update performance. The simulation results based on SDN-WISE show that the proposed strategies could adapt well to the resource-limited wireless sensor networks, and the advantages are especially obvious when the rule dependencies are more complicated.