Systems, methods and communications devices

A communications device comprising:

• a transceiver configured to transmit and/or receive signals within a wireless communications network via a wireless radio interface provided by the wireless communications network;
• and
• a controller configured with the transceiver to:
• transmit, for detection by one or more other devices, a command signal, wherein the command signal requests a response from the one or more other devices;
• transmit, for detection by the one or more other devices, a carrier wave (CW) signal, wherein the CW signal has timing parameters which are changeable properties of the CW signal determined by the communications device according to one or more factors;
• receive, from the one or more other devices, one or more backscattered signals in response to the CW signal, wherein the one or more backscattered signals indicate a response to the command signal for the one or more other devices.

A device comprising:

• a transceiver configured to receive signals from a communications device and/or transmit backscattered signals to the communications device in response to a carrier wave (CW) signal, and
• a controller configured with the transceiver to:
• receive, from a communications device, a command signal, wherein the command signal requests a response from the device;
• receive, from the communications device, the CW signal, wherein the CW signal has timing parameters which are changeable properties of the CW signal determined by the communications device according to one or more factors;
• and
• transmit, to the communications device, a backscattered signal in response to the CW signal, wherein the backscattered signal indicates a response to the command signal for the device.