Communication system, communication method, communication apparatus, and computer program product

A communication system comprising:

• a server system;
• and
• a plurality of communication apparatuses, wherein
• the server system includes a server and a concentrator, the concentrator being a device concentrating sensor data transmitted from each of the plurality of communication apparatuses,
• the concentrator and the plurality of communication apparatuses configure a wireless multi-hop network,
• the server includes one or more first hardware processors configured to:
• determine a level indicating processing frequency of predetermined processing in a stepwise manner, the predetermined processing being processing of acquiring sensor data from a plurality of sensors connected to each of the plurality of communication apparatuses, the level being determined based on determination information affecting the predetermined processing, the determination information being attribute information indicating an attribute of a set place where the server system, the plurality of communication apparatuses, or the plurality of sensors are each set, the determination information being obtained from an external device other than the plurality of communication apparatuses connected to the plurality of sensors;
• and
• transmit the level to the concentrator;
• the concentrator includes one or more second hardware processors configured to:
• determine a period of the predetermined processing based on the level that is transmitted;
• and
• transmit the period of the predetermined processing to the plurality of communication apparatuses, and
• each of the plurality of communication apparatuses includes one or more third hardware processors configured to:
• receive the period of the predetermined processing from the concentrator;
• and
• execute the predetermined processing based on the period.