A wireless communication device exchanges wireless data with a first wireless node in a first wireless network and switches to a second wireless node in a second wireless network in response to a loss of wireless signal strength. The golf grip includes a grip body having an upper portion, a lower portion, a grip length, a proximal end, a distal end, and an exterior body surface. The hat-shaped profiled section has an end section facing a door column when mounted in the vehicle door. These steps are repeated to create processes and to execute the test function in parallel and repetitively in the first thread of the created processes until a given condition is satisfied. The path selecting unit obtains the number of times for which the REG is used for each of the plurality of path candidates; and, based on each number of times that is obtained, selects a path for transmitting the optical signals.