COMMUNICATION DEVICE, RADIO NETWORK SYSTEM, RADIO NETWORK CONTROL METHOD AND RADIO NETWORK CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To reduce the number of transmission times of route information from a radio communication terminal to the possible extent in a multi-hop radio network system.SOLUTION: The radio network system includes a plurality of aggregation devices and a plurality of communication devices. Each communication device is connected to one of the aggregation devices through multi-hop radio communication. The communication device detects a second aggregation device, which is different from a currently connected first aggregation device and is currently connectable to the communication device, and calculates at a predetermined period an evaluation value, which indicates the degree of easiness to connect to the first and second aggregation devices and in which a smaller value indicates easier to connect. When the evaluation value for the second aggregation device has a smaller value than the evaluation value for the first aggregation device by a predetermined ratio or more, the communication device connects to the second aggregation device in place of the first aggregation device.