Communications system, slave node, route building method, and program

摘要

The present invention offers a communications system, etc., capable of building a stable relay path even if a propagation path fluctuates due to RSSI fluctuation. In a wireless backhaul system, when building a communications path of a tree structure with a core node for a root, in each respective slave node, successive averages of RSSI of n routing packets received after the reset routing packet received most recently from the same transmission source node are used to determine whether to treat the transmission source node as a parent in the tree structure. It is possible to acquire an asymptotically stable relay path from the RSSI following a generally logarithmic normal distribution, and in particular, by using successive averages.