Elevator car communication system

A wireless communication system for use in an elevator system comprising an elevator car moveable within a hoistway and a controller arranged to communicate with the elevator car, wherein the wireless communication system comprises:

• a first wireless communication unit for use with the elevator car;
• and
• a second wireless communication unit for use with the controller;
• wherein the first and second wireless communication units are arranged to exchange elevator operational data using a wireless communication protocol, wherein each data symbol within a set of data symbols corresponding to said elevator operational data is modulated onto a plurality of orthogonal sub-carriers using an orthogonal frequency division multiplexing modulation scheme;
• and
• wherein the modulated plurality of orthogonal sub-carriers are transmitted between the first and second wireless communication units over a wireless interface.

A method of operating an elevator system comprising an elevator car moveable within a hoistway and a controller arranged to communicate with the elevator car, wherein the method comprises:

• providing a first wireless communication unit for use with the elevator car;
• providing a second wireless communication unit for use with the controller;
• exchanging elevator operational data using a wireless communication protocol, wherein each data symbol within a set of data symbols corresponding to said elevator operational data is modulated onto a plurality of orthogonal sub-carriers using an orthogonal frequency division multiplexing modulation scheme;
• and
• transmitting the modulated plurality of orthogonal sub-carriers between the first and second wireless communication units over a wireless interface.

A non-transitory computer-readable medium comprising instructions that, when operated by a processor, cause the processor to carry out a method of operating an elevator system comprising an elevator car moveable within a hoistway and a controller arranged to communicate with the elevator car, wherein the method comprises:

• providing a first wireless communication unit for use with the elevator car;
• providing a second wireless communication unit for use with the controller;
• exchanging elevator operational data using a wireless communication protocol, wherein each data symbol within a set of data symbols corresponding to said elevator operational data is modulated onto a plurality of orthogonal sub-carriers using an orthogonal frequency division multiplexing modulation scheme;
• and
• transmitting the modulated plurality of orthogonal sub-carriers between the first and second wireless communication units over a wireless interface.