RU2021127518A - RELIABLE DISTANCE MEASUREMENT SYSTEM - Google Patents

Claims (83)

1. A device for measuring distance via wireless communication between a device acting as a first device (110) and a second device (120) for wireless communication, wherein the wireless communication comprises a ranging protocol for determining a distance between the first and second devices based on the arrival time of the measurement message on the first device, the protocol comprising transmitting the measurement message by the second device; wherein the device contains: - the first transceiver (111) for transmitting and receiving messages, - the first message processor (112) configured to - message processing in accordance with the ranging protocol, - determining the first arrival time of the measurement message on the first device, and - determining the first distance (151) between the first device and the second device based on the first arrival time; wherein the first message processor (112) is configured to communicate with the third device (130), and the third device acting as an interacting device is located at a certain distance (150) from the first device, And, to estimate a certain distance is made with the possibility - receiving assistance data from the cooperating device, wherein the assistance data is based on the third arrival time of the first message at the cooperating device, - determining a third distance (153) between the third device and the second device using support data, and - performing a validation test at a first distance (151), a valid distance (150), and a third distance (153), wherein the validation test accepts the first distance as reliable when said distances correspond to an acceptable spatial constellation (100) from the first device, the second device, and the cooperating devices. 2. The apparatus of claim. 1, wherein the test includes a cosine test or a triangle inequality test for an acceptable spatial population. 3. The apparatus of claim 1 or 2, wherein the ranging protocol comprises exchanging messages that are cryptographically protected based on the key data, and the first message processor (112) is configured to share the key data with the cooperating device to enable the third processor ( 132) messages cryptographically process messages in accordance with the ranging protocol. 4. An apparatus according to any one of the preceding claims, wherein the first message processor (112) is configured to determine a valid distance in accordance with a ranging protocol. 5. An apparatus according to any one of the preceding claims, wherein the apparatus comprises a clock block for providing a time reference for determining said arrival times, and the first message processor (112) is configured to synchronize the time reference with a corresponding clock block in the cooperating device. 6. The device according to any one of the preceding claims, wherein the ranging protocol comprises a first device acting as the originating device sending the originating message to the second device while the second device upon receiving the originating message is to send a measurement message and the first processor (112) messages are configured exchanging role reversal data with a third device to enable the third device to act as an originating device for distance measurement; moreover, the third device, when receiving data on the change of roles, is configured to - determining a third distance between the third device and the second device according to the ranging protocol based on the second measurement message, and transmitting third support data to the first device, the third support data indicating a third distance; while the first message processor (112) is configured to - determining the second distance between the first device and the second device upon receipt of the second measurement message on the first device, - receiving third support data from the third device, and - performing a verification test also using the second distance and the third support data. 7. An apparatus according to any one of the preceding claims, wherein the third message processor (132) is configured to - determining the third signal strength of at least one message received from the second device, and - including data on the power of the third signal in the support data for the first device; And the first message processor (112) is configured to - determining the strength of the first signal of at least one message received from the second device, and - checking whether certain distances are reliable by comparing the strength of the first signal and the strength of the third signal with the corresponding calculated values of the signal strength at certain distances. 8. An apparatus according to any one of the preceding claims, wherein the first message processor (112) is configured, after assessing that the determined distance is not reliable, with at least one of - requirements to perform a different security protocol with the second device; - a request for additional distance measurement using another ranging protocol and/or another type of wireless communication; - prohibiting or restricting access to at least some data and/or at least one function in the first device. 9. System for measuring a reliable distance, containing the device according to any one of the preceding paragraphs. 1-8, the third device disclosed in claim 1 and the fourth device acting as a second cooperating device located at a second valid distance from the first device or from the third device, wherein the fourth device contains - a fourth wireless receiver (141) for receiving messages, - a fourth message processor (142) configured to - determining the fourth time of arrival of the message about the measurement on the fourth device and - transmitting the fourth support data to the first device, the fourth support data being based on the fourth arrival time; wherein the first message processor (112) is configured to - receiving fourth assistance data from the second cooperating device, - determining a fourth distance between the fourth device and the second device using the fourth support data, and - performing a verification test also using the second valid distance and the fourth distance. 10. The system of claim 9, wherein the first message processor (112) is configured to - performing a verification test using a combination of the first triangle inequality in the first spatial constellation of the first device, the second device and the third device and the second triangle inequality in the second spatial constellation of the first device, the second device and the fourth device; or - checking whether the first location of the second device according to the first spatial constellation corresponds to the second location of the second device according to the second spatial constellation; or - performing a validation test using an inconsistency check to determine if all of the determined distances are greater than zero; or - performing a verification test based on a setting in which the third device and the fourth device are arranged such that a valid angle between the line from the third device to the first device and the line from the fourth device to the first device is at least 90 degrees; or - performing a verification test based on a setting in which the third device and the fourth device are located opposite each other with respect to the first device; or - performing a validation test based on a setting in which the second valid distance corresponds to the specified valid distance. 11. The system according to claim 9 or 10, comprising at least one additional device acting as an additional interacting device, and the third device, the fourth device and at least one additional device are located in a plane on the edges of the polyhedron, while the first device is located inside the polyhedron, wherein the first message processor (112) is configured to - performing a verification test using a combination of triangle inequalities in at least two spatial sets, each set containing a second device and two devices from a set of the first device and cooperating devices. 12. Method for measuring distance by wireless communication between the first device (110) and the second device (120), wherein the wireless communication comprises a ranging protocol for determining the distance (140) between the first and second devices based on the arrival time of the measurement message on the first device, the protocol comprising transmitting the measurement message by the second device; wherein the method includes: - determining the first distance between the first device and the second device based on the first arrival time of the measurement message on the first device; - communication with the third device (130), and the third device, acting as an interacting device, is located at a certain distance from the first device, wherein the third device is configured to - determining the third time of arrival of the message about the measurement on the third device and - providing support data, wherein the support data is based on a third arrival time; wherein the method includes, for estimating a certain distance, - determination of the third distance between the third device and the second device using support data, - performing a verification test at a first distance, a valid distance, and a third distance, the verification test accepting the first distance as reliable when said distances correspond to an acceptable spatial constellation of the first device, the second device, and the cooperating device. 13. The method according to p. 12, including - issuing an instruction to the first device to act as an initiating device to provide a first time of arrival or a first distance, or - instructing the third device to act as a cooperating device to provide support data based on the third arrival time. 14. The method of acting as an interacting device when measuring distance through wireless communication between the first device (110) and the second device (120), moreover, the interacting device is located at a certain distance from the first device, wherein the wireless communication comprises a ranging protocol for determining a distance between the first and second devices based on the arrival time of the measurement message on the first device, the protocol comprising transmitting the measurement message by the second device; wherein the first device is configured to - determining the first distance between the first device and the second device based on the first arrival time of the measurement message on the first device; wherein the method includes: - determination of the third time of arrival of the message about the measurement on the interacting device and - providing support data, the support data being based on a third arrival time; wherein the first device for estimating a certain distance is configured to - determining the third distance between the interacting device and the second device using support data and - performing a verification test at a first distance, a valid distance, and a third distance, the verification test accepting the first distance as reliable when said distances correspond to an acceptable spatial constellation of the first device, the second device, and the cooperating device. 15. A computer program product downloadable from a network and/or stored on a computer-readable medium and/or a microprocessor-executable medium contains program code instructions for implementing the method according to any one of paragraphs. 12-14 when executed on a computer.