Proposal of a method to solve the Group Temporal Key mismatch between IoT devices

In this paper, we investigate the cause of the interconnectivity issue caused by the implementation specifications for updating GTK (Group Temporal Key) of wireless routers and range extenders due to differences in the interpretations of the manufacturers. We also propose a method to improve interconnectivity with a device side implementation. And we aim at contributing to the improvement of IoT devices interconnectivity such as ECHONET Lite devices.