US Patent 11018734 Eliciting MIMO transmissions from wireless communication devices

In a general aspect, MIMO transmissions are elicited from wireless communication devices for wireless sensing. A first wireless communication device may be configured to generate network or transport layer messages addressed to a second wireless communication device in a wireless communication network, and wirelessly transmit the network or transport layer messages to the second wireless communication device to elicit MIMO transmissions from the second wireless communication device. The first wireless communication device may further be configured to receive MIMO transmissions from the second wireless communication device, where the MIMO transmissions traverse a space between the first wireless communication device and the second wireless communication device. The first wireless communication device may additionally be configured to identify a training field in each MIMO transmission, generate channel information based on the respective training fields, and detect motion that occurred in the space based on the channel information.