COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To enable a slave unit to autonomously switch a route in the case where communication is failed in a downstream direction in a source route type communication system. ! SOLUTION: The communication system includes a plurality of communication devices including a master unit and a plurality of slave units. A link between the communication devices is formed from at least one of a power line transmission line and a wireless transmission line, and each communication device performs communication while selectively switching the power line transmission line and the wireless transmission line. In the communication system, the communication is performed in accordance with a source route method designating a destination while loading route information on a packet in a downstream direction from a master unit to a slave unit. In each of the links, the route information is configured to preferentially select a link capable of selecting both the power line transmission line and the wireless transmi