Patent ID: 9125142
Filing Date: 2015-09-01
Classification: H04W

Abstract:
1. A node apparatus for forming a wireless ad-hoc network, the node apparatus comprising: a recognition possibility determination unit that determines whether or not a gateway apparatus connecting said wireless ad-hoc network to another network can be recognized; an adjoining node detection unit that detects another node apparatus which is a source of a received packet as an adjoining node; a channel switching unit that switches, when said recognition possibility determination unit determines that said gateway apparatus cannot be recognized, a reception channel used for reception of packets transmitted in said wireless ad-hoc network successively to each of a plurality of channels; and a channel selection unit that selects a communication channel to be used for communication in said wireless ad-hoc network based on a number of adjoining nodes detected by said adjoining node detection unit in each of said plurality of channels, the channel selection unit selecting the communication channel used by a largest number of the adjoining nodes from among some of said plurality of channels when the number of adjoining nodes in the some of said plurality of channels does not exceed a threshold, and selecting the communication channel used by a smallest number of the adjoining nodes from among said plurality of channels when the number of adjoining nodes in said plurality of channels exceeds the threshold.