Patent No. EP3609205 (titled "Wireless Data Communication In A System") was filed by Otis Elevator on Aug 10, 2018. The application was issued on Dec 15, 2021.
A wireless communication system for a system with multiple sensors and controllers, such as a passenger conveyor system or HVAC system, comprising a main gateway connected to a central controller and satellite gateways connected to remote controllers via a wireless local area network. The satellite gateways can be interconnected to extend coverage without increasing capacity, and can perform data processing before transferring data to the main gateway.

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