WO-2026094058-A2 - A SYSTEM AND METHOD FOR PAIRING BETWEEN UNDERWATER DEVICES

Abstract

The present invention discloses an underwater communication device for use by divers, comprising: at least one permanent magnet positioned at an edge of said device and configured to generate a magnetic field; at least one magnetic sensor with proximity detection functionality positioned at an edge of said device and configured to detect said magnetic field when a second underwater communication device is brought into proximity; a pairing module configured to: receive a proximity indication from said magnetic sensor when said magnetic field is detected, initiate a communication pairing session in response to said proximity indication, and establish a shared connection with said second underwater communication device, wherein the shared communication link enables subsequent underwater communication between the devices later when the devices are no longer in proximity identified by said magnetic field;

Inventors

• BAREL, Raz
• BAREL, HAGGAI
• BERINSKY, GENNADIY

Assignees

• 2TWO LABS LTD.

Dates

Publication Date

20260507

Application Date

20251104

Priority Date

20241104

Claims (20)

1. 1. An underwater communication device for use by divers, comprising: at least one permanent magnet positioned at an edge of said device and configured to generate a magnetic field; at least one magnetic sensor with proximity detection functionality positioned at an edge of said device and configured to detect said magnetic field when a second underwater communication device is brought into proximity; a pairing module configured to: receive a proximity indication from said magnetic sensor when said magnetic field is detected, initiate a communication pairing session in response to said proximity indication, and establish a shared connection with said second underwater communication device, wherein the shared communication link enables subsequent underwater communication between the devices later when the devices are no longer in proximity identified by said magnetic field;
2. 2. The underwater communication device of claim 1, wherein said pairing module is further configured to: randomly select a key number from a uniform distribution between 0 and K-l, wherein K represents a predefined range of polynomial numbers; randomly select at least one carrier frequency number from a range between 0 and C-l, wherein C represents a predefined number of carrier frequencies; and transmit said key number and said at least one carrier frequency number to said second underwater communication device a polynomial numbers table storing a plurality of indexed polynomial numbers within a predefined range.
3. 3. The underwater communication device of claim 2, wherein said at least one carrier frequency number comprises: a regular carrier frequency number for normal communication operations; and an SOS carrier frequency number for emergency communications.
4. 4. The underwater communication device of claim 1, further comprising: a guide pairing module configured to facilitate pairing between a master device and a plurality of user devices by providing step-by-step guidance for aligning and pairing said devices.
5. 5. The underwater communication device of claim 4, wherein said guide pairing module is configured to: enter a pairing mode responsive to activation of a pairing button; pair a first set of user devices with said master device by sending a first pairing signal; transmit first polynomial parameters to said first set of user devices upon successful pairing; pair a second set of user devices with said master device by sending a second pairing signal; and transmit second polynomial parameters to said second set of user devices upon successful pairing.
6. 6. The underwater communication device of claim 5, wherein said guide pairing module is further configured to display distinct visual indicators for each set of paired devices to confirm successful pairing.
7. 7. The underwater communication device of claim 1, further comprising a calibration module configured to determine baseline magnetic field readings when no external magnet or weak magnetic field is present near said magnetic sensor, and distinguish between ambient magnetic fields and magnetic fields from other underwater communication devices based on said baseline magnetic field readings; and a body check module configured to assess communication functionality between paired devices before a dive session.
8. 8. The underwater communication device of claim 2, wherein each polynomial number in said polynomial numbers table serves as both a cryptographic key and an identifier for a diver or diver pair.
9. 9. The underwater communication device of claim 1, wherein said permanent magnet and said magnetic sensor are strategically positioned at opposing edges of said device to facilitate a seamless pairing process when users bring their hands close together.
10. 10. A method for establishing secure underwater communication between diving devices, comprising: positioning a first underwater communication device having at least one permanent magnet at an edge thereof in proximity to a second underwater communication device having at least one magnetic sensor at an edge thereof; detecting, by said magnetic sensor of said second underwater communication device, a magnetic field generated by said permanent magnet of said first underwater communication device; generating, by a pairing module of said second underwater communication device, a proximity indication based on said detected magnetic field; initiating, by said pairing module, a communication pairing session in response to said proximity indication; establishing a shared connection with said second underwater communication device wherein the shared communication link enables subsequent underwater communication between the devices later when the devices are no longer in proximity identified by said magnetic field;
11. 11. The method of claim 10, further comprising: determining a baseline magnetic field reading before initiating communication, wherein said baseline magnetic field reading is measured when no external magnet or weak magnetic field is present near said magnetic sensor; and distinguishing between ambient magnetic fields and magnetic fields from said first underwater communication device based on said baseline magnetic field reading.
12. 12. The method of claim 10, further comprising the steps of: selecting a key number from a polynomial numbers table storing indexed polynomial numbers within a predefined range; selecting at least one carrier frequency number for communication; transmitting said key number and said at least one carrier frequency number to said first underwater communication device; and establishing a shared connection between said first and second underwater communication devices using said key number and said at least one carrier frequency number; wherein said selecting a key number comprises: randomly selecting said key number from a uniform distribution between 0 and K- 1 , wherein K represents a total number of polynomial numbers in said polynomial numbers table.
13. 13. The method of claim 10, wherein said selecting at least one carrier frequency number comprises: randomly selecting a regular carrier frequency number from a range between 0 and C-l for normal communication operations; and randomly selecting an SOS carrier frequency number from said range between 0 and C-l for emergency communications.
14. 14. The method of claim 10, further comprising: performing a body check operation to assess communication functionality between said first and second underwater communication devices before a dive session.
15. 15. The method of claim 10, further comprising: determining a diving scenario comprising one of: a group scenario involving multiple diver pairs, or a pair scenario involving a single diver pair; setting a detection threshold using a Constant False Alarm Rate (CFAR) method based on said diving scenario; and adjusting said detection threshold to maintain a consistent false alarm rate across varying underwater noise levels.
16. 16. The method of claim 15, wherein in case of diving scenario is a group scenario, further comprising: selecting, by a master device, a master key number between 0 and K- 1 ; selecting M/2 buddy key numbers between 0 and K-l, wherein M represents a number of divers in a group; and distributing said master key number and respective buddy key numbers to diver pairs within said group.
17. 17. The method of claim 15, wherein when said diving scenario is a pair scenario, further comprising: selecting, by a leader device, a master key number between 0 and K- 1 ; selecting a single buddy key number between 0 and K- 1 ; and distributing said master key number and said single buddy key number to both divers in said pair.
18. 18. The method of claim 10, further comprising: converting said key number into a key polynomial for cryptographic communication.
19. 19. The method of claim 10, further comprising: placing a header comprising said key number at an end of a transmitted message to reduce computational cost.
20. 20. A system for underwater communication among a plurality of divers, comprising: • a plurality of diver transceiver units, each configured to transmit and receive underwater communication signals; • a master transceiver unit associated with a guide diver; • a memory within each diver transceiver unit storing a lookup table comprising a set of / 'distinct polynomials, each polynomial being associated with a unique index number and at least one carrier frequency; • wherein each pair of divers is assigned a single polynomial that serves as both a key and an identifier for that pair; • wherein the master transceiver unit is assigned a distinct polynomial different from those assigned to the diver pairs.

Description

A SYSTEM AND METHOD FOR PAI RING BETWEEN UNDERWATER DEVICES BACKGROU N D TECH NICAL FI ELD The present invention relates generally to underwater communication, more specifically pairing underwater communication and establishing P2P underwater communication network. SUMMARY The present invention discloses a coupling /pairing communication system between at least two communication devices, comprised of: at least two communication devices wherein each device is comprised of: at least one permanent magnet, sensor module configured to detect magnetic field in the nearby space; pairing module configured to be activated upon determining proximity for establishing communication channel between the at least two communication devices The present invention discloses an underwater communication device for use by divers, comprising: at least one permanent magnet positioned at an edge of said device and configured to generate a magnetic field; at least one magnetic sensor with proximity detection functionality positioned at an edge of said device and configured to detect said magnetic field when a second underwater communication device is brought into proximity; a pairing module configured to: receive a proximity indication from said magnetic sensor when said magnetic field is detected, initiate a communication pairing session in response to said proximity indication, and establish a shared connection with said second underwater communication device, wherein the shared communication link enables subsequent underwater communication between the devices later when the devices are no longer in proximity identified by said magnetic field. According to some embodiments of the present invention the pairing module is further configured to: randomly select a key number from a uniform distribution between 0 and K-l, wherein K represents a predefined range of polynomial numbers; randomly select at least one carrier frequency number from a range between 0 and C-l, wherein C represents a predefined number of carrier frequencies; and transmit said key number and said at least one carrier frequency number to said second underwater communication device a polynomial numbers table storing a plurality of indexed polynomial numbers within a predefined range. According to some embodiments of the present invention the at least one carrier frequency number comprises: a regular carrier frequency number for normal communication operations; and an SOS carrier frequency number for emergency communications. According to some embodiments of the present invention the device further comprising: a guide pairing module configured to facilitate pairing between a master device and a plurality of user devices by providing step-by-step guidance for aligning and pairing said devices. According to some embodiments of the present invention the guide pairing module is configured to: enter a pairing mode responsive to activation of a pairing button; pair a first set of user devices with said master device by sending a first pairing signal; transmit first polynomial parameters to said first set of user devices upon successful pairing; pair a second set of user devices with said master device by sending a second pairing signal; and transmit second polynomial parameters to said second set of user devices upon successful pairing. According to some embodiments of the present invention, the guide pairing module is further configured to display distinct visual indicators for each set of paired devices to confirm successful pairing. According to some embodiments of the present invention the device further comprising a calibration module configured to determine baseline magnetic field readings when no external magnet or weak magnetic field is present near said magnetic sensor, and distinguish between ambient magnetic fields and magnetic fields from other underwater communication devices based on said baseline magnetic field readings; and a body check module configured to assess communication functionality between paired devices before a dive session. According to some embodiments of the present invention each polynomial number in said polynomial numbers table serves as both a cryptographic key and an identifier for a diver or diver pair. According to some embodiments of the present invention said permanent magnet and said magnetic sensor are strategically positioned at opposing edges of said device to facilitate a seamless pairing process when users bring their hands close together. The present invention discloses a method for establishing secure underwater communication between diving devices, comprising: positioning a first underwater communication device having at least one permanent magnet at an edge thereof in proximity to a second underwater communication device having at least one magnetic sensor at an edge thereof; detecting, by said magnetic sensor of said second underwater communication device, a magnetic field generated by said permanent magnet of said fir