NODE DEVICE AND COMMUNICATION METHOD

摘要

A node device within a network which is configured to be capable of relaying with a server by a plurality of relay devices comprises a receiving unit, a wait number generating unit, a storage unit, a selection unit, and a transmitting unit. The receiving unit receives a frame from an adjacent node device. When the number of hops to the adjacent node device when each respective relay device among the plurality of relay devices is a start point is notified together with a synchronization request from the adjacent node device, the wait number generating unit generates a wait number for each relay device by incrementing the number of hops. The storage unit associates the generated wait numbers with identifiers which identify the relay devices and stores same. The selection unit selects a relay device with a relatively small wait number which is stored in the storage unit. The transmitting device designates the selected relay device as a relay site and transmits a data frame addressed to a server.