Methods and systems for detection and cancellation of attack signals

A non-transitory machine-readable medium storing instructions that, when executed by one or more processors, cause the one or more processors to perform:

• receiving a first message from a first device at a second device;
• transmitting a second message from the second device to the first device;
• receiving a third message from the first device at the second device;
• transmitting a fourth message from the second device to the first device;
• computing, at the second device, a first time-of-flight based on a plurality of timestamps associated with the first message, the second message, and the third message;
• and
• receiving a fifth message from the first device at the second device, wherein the fifth message includes a second time-of-flight computed by the first device or an invalidation message of a current ranging round.

A device, comprising:

• a transceiver;
• a non-transitory memory storing instructions;
• and
• one or more hardware processors configured to execute the instructions to cause the device to perform operations comprising:
• receive a first message from a first device at the device;
• transmit a second message from the device to the first device;
• receive a third message from the first device at the device;
• transmit a fourth message from the device to the first device;
• compute, at the device, a first time-of-flight based on a plurality of timestamps associated with the first message, the second message, and the third message;
• and
• receive a fifth message from the first device at the device, wherein the fifth message includes a second time-of-flight computed by the first device or an invalidation message of a current ranging round.