US Patent No. 10,251,202

WIRELESS COMMUNICATION SYSTEM


Patent No. 10,251,202
Issue Date April 02, 2019
Title Wireless Communication System
Inventorship Masanori Minamiyama, Osaka (JP)
Yasuhiro Kawakami, Osaka (JP)
Assignee Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)

Claim of US Patent No. 10,251,202

1. A wireless communication system comprising:a measurement unit that measures a physical quantity and creates measured data based on the measured physical quantity;
a first node having a wireless communication function;
a second node having a wireless communication function; and
one or more third nodes configured to relay wireless communication between the first node and the second node,
wherein, while a communication path through which the measured data is sent from the first node to the second node is not established, the first node and the one or more third nodes send the measured data in broadcast,
wherein, after determining a destination in at least a part of the communication path from the first node to the second node, a node out of the first node and the one or more third nodes which has the determined destination sends the measured data to the determined destination in unicast,
wherein, when each node of the first node and the one or more third nodes cannot send the measured data to an upstream node in the communication path after the communication path is established, the each node performs resending of the measured data in unicast to the upstream node, and
wherein, if the resending fails, each of the first node and the one or more third nodes sends the measured data in broadcast to re-establish a new communication path to the second node.