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SE546823C2 - Adaptive radar for detecting near and far objects - Google Patents

Adaptive radar for detecting near and far objects

Info

Publication number
SE546823C2
SE546823C2 SE2300080A SE2300080A SE546823C2 SE 546823 C2 SE546823 C2 SE 546823C2 SE 2300080 A SE2300080 A SE 2300080A SE 2300080 A SE2300080 A SE 2300080A SE 546823 C2 SE546823 C2 SE 546823C2
Authority
SE
Sweden
Prior art keywords
monostatic
distance
pulse based
pulse
radar mode
Prior art date
Application number
SE2300080A
Other languages
Swedish (sv)
Other versions
SE2300080A1 (en
Inventor
Henrik Sjöland
Magnus Sandgren
Robert Baldemair
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE2300080A priority Critical patent/SE546823C2/en
Priority to PCT/SE2024/050757 priority patent/WO2025071447A1/en
Publication of SE2300080A1 publication Critical patent/SE2300080A1/en
Publication of SE546823C2 publication Critical patent/SE546823C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
    • G01S7/006—Transmission of data between radar, sonar or lidar systems and remote stations using shared front-end circuitry, e.g. antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A device (201) in a mobile communication system performs radar sensing of an environment by operating in at least one of at least two radar modes, including a monostatie full-duplex long-pulse based radar mode and a monostatie short-pulse based radar mode, wherein a radar pulse (205) transmitted by the device when operating in the monostatie fullduplex long-pulse based radar mode is longer than the radar pulse transmitted by the device when operating in the monostatie short-pulse based radar mode. Mode selection includes operating (903) in the monostatie full-duplex long-pulse based mode when sensing is to be confined todistances smaller than a first distance from the device (901, Yes); and operating (907) in the monostatie short- pulse based radar mode when sensing is to be no closer than a second distance from the device (905, Yes), wherein the second distance is greater than or equal to the first distance.

Claims (50)

Claims
1. A method of perforrning radar sensing of an environment by a device (201, 1001) in a mobile communication system, the method comprising: selectively operating (701, 711, 721, 725, 901) the device (201, 900, 910, 920, 1001) in at least one of at least two radar modes, wherein the at least two radar modes comprise a monostatic full-duplex long-pulse based radar mode (703, 715,723,903,909,913) and a monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 913), wherein a radar pulse (103,205) transmitted by the device (201,900,910,920, 1001) when operating in the monostatic full-duplex long-pulse based radar mode (703, 715,723,903,909,913) is longer than the radar pulse (103,205) transmitted by the device (201,900,910,920, 1001) when operating in the monostatic short-pulse based radar mode (705, 713,727,907, 911, 913), and wherein selectively operating (701, 711, 721, 725) the device (201,900,910,920, 1001) in said at least one of the at least two radar modes comprises: operating the device (20 1, 900, 910, 920, 1001) in the monostatic full-duplex long- pulse based radar mode when sensing is to be confined to distances smaller than a first distance from the device (201, 900, 910, 920, 1001); and operating the device (201,900,910,920, 1001) in the monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 913) when sensing is to be no closer than a second distance from the device (201,900,910,920, 1001), wherein the second distance is greater than or equal to the first distance.
2. The method of claim l, comprising: the device (201, 900, 910, 920, 1001) deciding which of the at least two radar modes is to be used by assessing one or more criteria.
3. The method of any one of the previous claims, wherein the second distance is equal to the first distance.
4. The method of any one of claims 1 through 2, wherein the second distance is greater than the first distance.
5. The method of any one of the previous claims, wherein the first distance is a minimum sensing distance of the monostatic short-pulse based radar mode (705, 713, 727, 907,911,913). _23_
6. The method of any one of the previous claims, wherein the second distance is a maximum sensing distance of the monostatic filll-duplex long-pulse based radar mode.
7. The method of claim 4, wherein: the first distance is a minimum sensing distance of the monostatic short-pulse based radar mode (705,713,727,907,9l1,913), the second distance is a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode (703, 715,723,903,909,913); and the method comprises: scanning a region that spans distances between the first distance and the second distance by Operating (729,913) the device (201,900,910,920, 1001) in the monostatic full- duplex long-pulse based r a d ar mode and also Operating (729,913) the device (201,900,910,920, 1001) in the monostatic short-pulse based radar mode (705, 7l3,727,907, 911, 913); and using, as sensing data of the region, sensing data collected by Operating (729, 913) the device (201 ,900,910,920, 1001) in the monostatic full-duplex long-pulse based radar mode in combination with sensing data collected by Operating (729,913) the device (201,900,910, 920, 1001) in the monostatic short-pulse based radar mode (705, 713,727,907,911,913).
S. The method of any one of the previous claims, wherein: the monostatic full-duplex long-pulse based radar mode comprises using a first transmission power level when transmitting the radar pulse (103, 205); the monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 9 13) comprises using a second transmission power level when transmitting the radar pulse (103, 205); and the second transmission power level is greater than the first transmission power level.
9. The method of any one of the previous claims, comprising: obtaining, from an application running on the device (20l,900,910,920,1001), range information pertaining to an area to be sensed.
10. The method of any one of claims 1 through 8, comprising: obtaining, from another device (201, 900, 910, 920, 1001), range information pertaining to an area to be sensed. _24_
ll. The method of any one of the previous claims, Wherein: an object to be found has a radar cross section, RCS; and the method comprises using the RCS While scanning for the object.
12. The method of claim ll, comprising: determining a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode based at least in part on the RCS of the object to be found While scanning.
13. The method of claim 11 or claim 12, comprising: determining a minimum sensing distance of the monostatic short-pulse based radar mode (705, 713,727,907, 911, 913) based at least in part on the RCS ofthe object to be found While scanning.
14. The method of any one of the previous claims, comprising: determining a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode based at least in part on a speed of a target to be sensed.
15. The method of any one of the previous claims, comprising: determining a minimum sensing distance of the monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 913) based at least in part on a speed ofan object to be sensed.
16. The method of any one of the previous claims, Wherein: the device (201,900,910,920, 1001) comprises a first transceiver and a second transceiver; and the first transceiver is operated in the monostatic fiill-duplex long-pulse based radar mode to sense the distances smaller than the first distance While the second transceiver is operated in the monostatic short-pulse based radar mode (705, 713,727,907, 91 1, 913) to sense distances no closer than the second distance.
17. The method of any one of the previous claims, Wherein operating the device (20 1, 900,910,920, 1001) in the monostatic full-duplex long-pulse based radar mode comprises tilting a transmission of a radar pulse (103,205) doWnWard towards an area to be sensed. _25-
18. The method of any one of the previous claims, comprising: coordinating with a second device (201, 900, 910, 920, 1001) such that a radar pulse (I 03, 205) transmission from the device (201, 900, 910, 920, 1001) Will not occur concurrently With a radar pulse (103, 205) transmission from the second device (201, 900, 910,920, 1001).
19. The method of any one of claims l through 17, comprising: coordinating With a second device (201,900,910,920, 1001) such that, When the device (201, 900, 910, 920, 1001) is operated in the monostatic full-duplex long-pulse based radar mode, the second device (201, 900, 910, 920, 1001) is operated in the monostatic short-pulse based radar mode (705, 7l3,727,907,911,913).
20. The method of any one of the previous claims, wherein: the device (201,900,910,920, 1001) comprises an antenna panel that comprises a plurality of antenna elements.
21. The method of claim 20, wherein: the monostatic full-duplex long-pulse based radar mode comprises using a first grouping of one or more of the antenna elements for transmission and a second grouping of one or more of the antenna elements for reception.
22. The method of any one of claims 20 and 21, wherein: the monostatic short-pulse based radar mode comprises using a third grouping of the antenna elements for transmission When scanning a first span of distances, and using a fourth grouping of the antenna elements for transmission When scanning a second span of distances, wherein the first span of distances is closer to the device (201, 900, 910, 920, 1001) than the second span of distances, and wherein the fourth grouping of the antenna elements comprises more antenna elements than the third grouping of the antenna elements.
23. The method of any one of the previous claims, wherein the device (201, 900, 910, 920, 1001) is a node in a telecommunications system. _26-
24. The method of any one of claims 1 through 22, Wherein the device (201, 900, 910, 920, 1001) is a User Equipment, UE, for use in a telecommunications system.
25. A computer program ( 1009) comprising instructions that, when executed by at least one processor (1003), causes the at least one processor (1003) to carry out the method according to any one of claims 1 through
26. A carrier comprising the computer program (1009) of claim 25, Wherein the carrier is one of an electronic signal, an optical signal, a radio signal, and a non-transitory computer readable storage medium (1005),
27. An apparatus (700, 710,720,900, 1001) for performing radar sensing of an environment by a device (201) in a mobile communication system, the apparatus (700, 710, 720, 900, 1001) comprising circuitry configured to cause the device (201) to: selectively operate (701, 711, 721,725,901) the device (201) in at least one of at least two radar modes, wherein the at least two radar modes comprise a monostatic full- duplex long-pulse based radar mode (703, 715, 723, 903, 909, 913) and a monostatic short- pulse based radar mode (705, 713,727,907,911,913), wherein a radar pulse (103,205) transmitted by the device (201) when operating in the monostatic full-duplex long-pulse based radar mode (703, 715, 723, 903, 909, 913) is longer than the radar pulse (103, 205) transmitted by the device (201) When operating in the monostatic short-pulse based radar mode (705, 713,727,907,911,913), and Wherein selectively operating (701, 711, 721, 725) the device (201) in said at least one of the at least two radar modes comprises: operating the device (201) in the monostatic full-duplex long-pulse based radar mode when sensing is to be confined to distances smaller than a first distance from the device (201); and operating the device (201) in the monostatic short-pulse based radar mode (705, 7 13 , 727,907,911,913)when sensing is to be no closer than a second distance from the device (201), Wherein the second distance is greater than or equal to the first distance.
28. The apparatus (700,710,720,900, 1001) of claim 27, Wherein the circuitry is further configured to cause the device (201) to decide which of the at least two radar modes is to be used by assessing one or more criteria. _27-
29. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 28, Wherein the second distance is equal to the first distance.
30. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 28, Wherein the second distance is greater than the first distance.
31. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 30, Wherein the first distance is a minimum sensing distance of the monostatic short-pulse based radar mode (705, 7is,727,907,9ii,9i3).
32. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 31, Wherein the second distance is a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode.
33. The apparatus (700,710,720,900, 1001) of claim 30, Wherein: the first distance is a minimum sensing distance of the monostatic short-pulse based radar mode (705, 713,727,907,911,913); the second distance is a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode (703, 715,723,903,909,913); and the circuitry is further configured to cause the device (201) to: scan a region that spans distances between the first distance and the second distance by operating (729,913) the device (201) in the monostatic full-duplex long- pulse based radar mode and also operating (729,913) the device (201) in the monostatic short- pulse based radar mode (705, 713,727,907,9l1,9l3); and use, as sensing data of the region, sensing data collected by operating (729, 913) the device (201) in the monostatic full-duplex long-pulse based radar mode in combination With sensing data collected by operating (729, 913) the device (201) in the monostatic short- pulse based radar mode (705, 713,727,907,911,913).
34. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 33, Wherein: the monostatic full-duplex long-pulse based radar mode comprises using a first transmission power level When transmitting the radar pulse ( 103, 205); _2g_ the monostatic short-pulse based radar mode (705, 713,727,907,91 1,913) comprises using a second transmission power level when transmitting the radar pulse (103, 205); and the second transmission power level is greater than the first transmission power level.
35. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 34, Wherein the circuitry is further configured to cause the device (201) to obtain, from an application running on the device (201), range information pertaining to an area to be sensed.
36- The apparatus (700,710,720,900, 1001) of any one of claims 27 through 34, Wherein the circuitry is further configured to cause the device (201) to obtain, from another device (201), range information pertaining to an area to be sensed.
37. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 36, Wherein: an object to be found has a radar cross section, RCS; and the circuitry is further configured to cause the device (201) to use the RCS While scanning for the object.
38. The apparatus (700,710,720,900, 1001) of claim 37, Wherein the circuitry is further configured to cause the device (201) to determine a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode based at least in part on the RCS of the object to be found while scanning.
39. The apparatus (700, 710,720,900, 1001) of claim 37 or claim 38, Wherein the circuitry is further configured to cause the device (201) to determine a minimum sensing distance of the monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 913) based at least in part on the RCS ofthe object to be found While scanning.
40. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 39, Wherein the circuitry is further configured to cause the device (201) to _29- determine a maximum sensing distance of the monostatic full-duplex long-pulse based radar mode based at least in part on a speed of a target to be sensed.
41. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 40, wherein the circuitry is configured to cause the device (201) to determine a minimum sensing distance of the monostatic short-pulse based radar mode (705, 7l3,727,907,911,913) based at least in part on a speed of an object to be sensed.
42. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 41, wherein the device (201) comprises a first transceiver and a second transceiver; and wherein the circuitry is further configured to cause the device (201) to operate the first transceiver in the monostatic fiill-duplex long-pulse based radar mode to sense the distances smaller than the first distance While Operating the second transceiver in the monostatic short-pulse based radar mode (705, 713, 727, 907, 911, 913) to sense distances no closer than the second distance.
43. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 42, wherein operating the device (201) in the monostatic fiill-duplex long-pulse based radar mode comprises tilting a transmission of a radar pulse (103, 205) downward towards an area to be sensed.
44. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 43, wherein the circuitry is further configured to cause the device (201) to coordinate with a second device (201) such that a radar pulse (103, 205) transmission from the device (201) will not occur concurrently with a radar pulse (103,205) transmission from the second device (201).
45. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 43, wherein the circuitry is further configured to cause the device (201) to coordinate with a second device (201) such that, when the device (201) is operated in the monostatic fiill-duplex long-pulse based radar mode, the second device (201) is operated in the monostatic short-pulse based radar mode (705, 713,727,907,911,913).
46. The apparatus (700, 710, 720, 900, 1001) of any one of claims 27 through 45, wherein _30_ the device (201) comprises an antenna panel that comprises a plurality of antenna elements.
47- The apparatus (700, 710,720,900, 1001) of c1aim 46, Wherein: the monostatic fu11-dup1ex long-pulse based radar mode comprises using a first grouping of one or more of the antenna e1ements for transmission and a second grouping of one or more of the antenna elements for reception.
48- The apparatus (700,710,720,900, 1001) of any one of claims 46 and 47, Wherein: the monostatic short-pu1se based radar mode comprises using a third grouping of the -3 1- antenna elements for transmission When scanning a first span of distances, and using a fourth grouping of the antenna elements for transmission When scanning a second span of distances, Wherein the first span of distances is closer to the device (201) than the second span of distances, and Wherein the fourth grouping of the antenna elements comprises more antenna elements than the third grouping of the antenna elements.
49. The apparatus (700,710,720,900, 1001) ofany one of claims 27 through 48, Wherein the apparatus (700,710,720,900, 1001) is a node in a telecommunications system.
50. The apparatus (700,710,720,900, 1001) of any one of claims 27 through 48, Wherein the apparatus (700, 7l0,720,900, 1001) is a User Equipment, UE, for use in a telecommunications system.
SE2300080A 2023-09-27 2023-09-27 Adaptive radar for detecting near and far objects SE546823C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2300080A SE546823C2 (en) 2023-09-27 2023-09-27 Adaptive radar for detecting near and far objects
PCT/SE2024/050757 WO2025071447A1 (en) 2023-09-27 2024-08-29 Adaptive radar for detecting near and far objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2300080A SE546823C2 (en) 2023-09-27 2023-09-27 Adaptive radar for detecting near and far objects

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SE546823C2 true SE546823C2 (en) 2025-02-25

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WO2025071447A1 (en) 2025-04-03

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