WO2024069309A1 - Rapport d'informations de trajectoire de vol - Google Patents

Rapport d'informations de trajectoire de vol Download PDF

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Publication number
WO2024069309A1
WO2024069309A1 PCT/IB2023/059236 IB2023059236W WO2024069309A1 WO 2024069309 A1 WO2024069309 A1 WO 2024069309A1 IB 2023059236 W IB2023059236 W IB 2023059236W WO 2024069309 A1 WO2024069309 A1 WO 2024069309A1
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WIPO (PCT)
Prior art keywords
uav
flight path
reporting
path information
condition
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PCT/IB2023/059236
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English (en)
Inventor
Helka-Liina MÄÄTTÄNEN
Hieu DO
Adrián Lahuerta LAVIEJA
Santhan THANGARASA
Zhiqiang Qi
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Telefonaktiebolaget Lm Ericsson (Publ)
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Publication of WO2024069309A1 publication Critical patent/WO2024069309A1/fr

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0004—Transmission of traffic-related information to or from an aircraft
    • G08G5/0013—Transmission of traffic-related information to or from an aircraft with a ground station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0047—Navigation or guidance aids for a single aircraft
    • G08G5/0069—Navigation or guidance aids for a single aircraft specially adapted for an unmanned aircraft

Definitions

  • UAV Unmanned Aerial Vehicles
  • UAVs drones
  • UAVs a.k.a., UAVs
  • a UAV can only be operated by a controller within the UAV’s visual line of sight (VLoS).
  • VLoS visual line of sight
  • the 3GPP has specified multiple features in release 15 (Rel-15) of 3GPP’s Long Term Evolution (LTE), aiming at improving the efficiency and robustness of terrestrial LTE networks for providing aerial connectivity services, particularly for low altitude UAVs.
  • LTE Long Term Evolution
  • the key features specified include: i) support for subscription-based identification; ii) height reporting when UAV crosses height threshold (the report may include height, location (3D), horizontal and vertical speed); iii) reference signal received power (RSRP) reporting per event of N cells’ signal power above a threshold (the report includes RSRP/Reference Signal Received Quality (RSRQ)/location (3D)); iv) user equipment (UE) specific uplink (UL) power control; and v) flight path information provided from an UE to a base station (e.g., evolved node B (eNB).
  • the flight path Information includes network polling, a list of waypoints (3D location), and a list of time stamps if available.
  • E-UTRAN can request a UE to report flight path information consisting of a number of waypoints defined as 3D locations as defined in TS 36.355.
  • a UE reports up to configured number of waypoints if flight path information is available at the UE.
  • the report can consist also time stamps per waypoint if configured in the request and if available at the UE.”
  • a UE is assumed to receive the flight path plan from unmanned aircraft systems traffic management (UTM) or that it is preconfigured by a user before the flight and hence before an Radio Resource Control (RRC) connection is established.
  • UDM unmanned aircraft systems traffic management
  • RRC Radio Resource Control
  • TS 36.331 defines an information element (IE) (a.k.a., data structure) named “FlightPathlnfoReportConfig.” This IE configures the max number of waypoints the UE can report back as well as time stamp (if the network wants).
  • IE information element
  • the IES included in the FlightPathlnfoReportConfig are illustrated below in Table 1.
  • the maxWayPointNumber IE Indicates the maximum number of waypoints the UE can include in the flight path information report if this information is available at the UE.
  • the includeTimeStamp IE indicates whether time stamp of each waypoint can be reported in the flight path information report if time stamp information is available at the UE.
  • TS 36.331 also defines the flight path information report, which is an IE named “FlightPathlnfoReport.” Table 2 below shows the IES included in the FligthPathlnforReport IE.
  • FlightPathlnfoReport IE [0012] As shown in Table 2, the flight path information report comprises list of elements of type WayPointLocation, which is defined as shown in Table 3.
  • an element of type WayPointLocation comprises two elements: 1) an element of type Locationinfo and 2) an element of type AbsoluteTimelnfo.
  • the IE Locationinfo is used to transfer detailed location information available at the UE to correlate measurements and UE position information.
  • the definition of the Locationinfo IE is shown below in Table 4
  • the AbsoluteTimelnfo IE indicates an absolute time in a format YY-MM-DD HH:MM:SS and using Binary Coded Decimal (BCD) encoding.
  • BCD Binary Coded Decimal
  • RAN#94-e a new release 18 (Rel-18) Work Item (WI) for supporting UAV in NR was approved in RP- 123600 (RP- 123600, New WID on NR support for UAV (Uncrewed Aerial Vehicles), RAN#94, Dec 2021) and one objective is to specify flight path reporting signaling for NR over RRC.
  • the framework of flight path reporting in LTE Rel-15 is the baseline for the Release 18 discussions.
  • 3GPP is also working on a RAN4 work item to support air-to-ground communications (i.e., providing cellular connection to commercial airliners using ground base stations).
  • air-to-ground communications i.e., providing cellular connection to commercial airliners using ground base stations.
  • flight path reporting from airplanes to network is also being discussed.
  • 3GPP TS 38.331 V17.1.0 (TS 38.331) specifies the 5G NR RRC protocol.
  • TS 38.331 defines an IE named Locationinfo which is used to transfer available detailed location information, Bluetooth, wireless local-area network (WLAN), and sensor available measurement results at the UE, and which may be used as a starting point for UAV/airplane flight path reporting.
  • Table 7 shows the definition of the Locationinfo IE.
  • CommonLocationlnfo is used to transfer detailed location information available at the UE to correlate measurements and UE position information
  • the data type CommonLocationlnfo is defined below in Table 8. TABLE 8: CommonLocationlnfo IE
  • Parameter type DisplacementTimeStamp defined in TS 37.355.
  • the first/leftmost bit of the first octet contains the most significant bit.
  • i Parameter type LocationCoordinates defined in TS 37.355.
  • the first/leftmost bit of i the first octet contains the most significant bit.
  • locationError i Parameter LocationError defined in TS 37.355.
  • the first/leftmost bit of the first octet i i contains the most significant bit.
  • i Parameter LocationSource defined in TS 37.355.
  • the first/leftmost bit of the first i octet contains the most significant bit.
  • UAS Unmanned Aircraft Systems
  • UDM Traffic Management
  • UTM Ultrath Generation Partnership Project
  • UAS UAV
  • UAV controller used by an operator with unique credentials and identities.
  • NAA National Aeronautics and Space Administration
  • UTM is a collaborative, automated, and federated airspace management approach that enables safe, efficient, and equitable small UAS operations at scale.
  • the concept of UTM is being adopted and implemented by many countries and regions in the world, e.g., in the US, Europe, Japan, Australia, etc.
  • TS 36.300 the UTM provides many flight-related functions for
  • UAVs and UAV operators including, for example: 1) remote identification: enabling UAV identification; 2) operation planning: flight planning considering various aspects e.g., UAV performance, whether condition; 3) operator messaging: message exchange between operators for e.g., position and status information; 4) Federal Aviation Administration (FAA) messaging: providing on-demand, periodic, or event-triggered communications with FAA systems to meet regulatory requirements; 5) mapping: information about airspace restrictions, obstacles, and sensitive regions; 6) Conflict advisory: real-time alerting for collision avoidance.
  • Mobile networks can enable reliable connectivity between the UAV and its controller. Meanwhile, UTM can connect to the UAV and the UAV controller through a core network and a radio access network (RAN). An illustration of UAS-to-UTM connectivity is provided in FIG. 6.
  • air-to-ground (ATG or A2G) communication refers to the communication between ground base stations and commercial aircraft.
  • Technical solutions for ATG have been implicitly included in 3 GPP work on non-terrestrial networks (NTN) in Rel- 17.
  • NTN non-terrestrial networks
  • a RAN4 work item for ATG (RP -220962) is being carried out, which aims to define radio frequency (RF) and radio resource management (RRM) requirements for ATG, having the following scope: 1) Providing in-flight connectivity using ground base stations; 2) Targeting up to 300km cell coverage and 1200km/h UE speed; 3) Example bands nl (FDD), n78 (TDD), and n79 (TDD).
  • RF radio frequency
  • RRM radio resource management
  • a method performed by an unmanned aerial vehicle The UAV includes a wireless communication device (WCD).
  • the method comprises obtaining reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV.
  • the flight path information includes one or more parameters related to the flight path of the UAV.
  • the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed more than one or more threshold values within given one or more time intervals.
  • a method performed by a network node comprises transmitting towards an unmanned aerial vehicle (UAV) reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV, and the UAV comprises a wireless communication device, WCD, capable of communicating with the network node.
  • UAV unmanned aerial vehicle
  • the flight path information includes one or more parameters related to the flight path of the UAV.
  • the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed more than one or more threshold values within given one or more time intervals.
  • a computer program comprising instructions which when executed by processing circuitry of an UAV or a network node causes the UAV or the network node to perform the method of any one of the embodiments described above.
  • a carrier containing the computer program of the embodiment descried above, wherein the carrier is one of an electronic signal, an optical signal, a radio signal, and a computer readable storage medium.
  • an unmanned aerial vehicle includes a wireless communication device (WCD).
  • WCD wireless communication device
  • the UAV is configured to obtain reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV.
  • the flight path information includes one or more parameters related to the flight path of the UAV.
  • the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed more than one or more threshold values within given one or more time intervals
  • a network node configured to transmit towards an unmanned aerial vehicle (UAV), reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV.
  • UAV unmanned aerial vehicle
  • the flight path information includes one or more parameters related to the flight path of the UAV.
  • the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed more than one or more threshold values within given one or more time intervals.
  • the UAV comprises a wireless communication device, WCD, capable of communicating with the network node.
  • an apparatus comprising a processing circuitry; and a memory, said memory containing instructions executable by said processing circuitry, whereby the apparatus is operative to perform the method of any one of embodiments described above.
  • a computer program comprising instructions which when executed by processing circuitry of an apparatus causes the apparatus to perform any of the methods disclosed herein.
  • a carrier containing the computer program wherein the carrier is one of an electronic signal, an optical signal, a radio signal, and a computer readable storage medium.
  • an apparatus that is configured to perform the methods disclosed herein.
  • the apparatus may include memory and processing circuitry coupled to the memory.
  • FIG. 1 illustrates a system according to an embodiment
  • FIG. 2 shows a process according to an embodiment
  • FIG. 3 shows a process according to an embodiment
  • FIG. 4 shows an apparatus according to an embodiment
  • FIG. 5 shows an apparatus according to an embodiment
  • FIG. 6 shows an illustration of UAS-to-UTM connectivity.
  • FIG. 1 illustrates a part of a system 100 according to an embodiment.
  • System 100 includes an unmanned aerial vehicle (UAV) 102, a radio access network (RAN) node 104, and a core network node 106, and an unmanned aircraft systems (UAS) traffic management (UTM) entity 108.
  • UAV unmanned aerial vehicle
  • RAN radio access network
  • UMS unmanned aircraft systems
  • UMS traffic management
  • UAV 102 may include a wireless communication device that is capable of communicating with RAN node 104.
  • UAV 102 is connected to UTM 108 via RAN node 104 and core network node 106.
  • UTM 108 is configured to manage the traffic of UAV 102.
  • UAV 102 As discussed above, there is a need to trigger UAV 102 to transmit towards RAN node 104 flight path information indicating UAV 102’ s flight path. Transmitting towards UAV 102 a reporting request for reporting the flight path information is one way. However, in some scenarios, it may be desirable for UAV 102 to report the flight path information based on an occurrence of one or more reporting conditions (e.g., when an altitude of UAV 102 suddenly drops).
  • RAN node 104 may transmit towards UAV 102 reporting condition information.
  • the reporting condition information indicates one or more conditions for UAV 102 to report to RAN node 104 and/or core network node 106 flight path information indicating a flight path of UAV 102.
  • the reporting condition information may indicate a condition #1 and a condition #2.
  • UAV 102 may be configured to report the flight path information only when the conditions #1 and #2 are satisfied or to report the flight path information when either the condition #1 or the condition #2 is satisfied.
  • the reporting condition information may indicate a condition #1, a condition #2, and a condition #3.
  • UAV 102 may be configured to report the flight path information only when (1) the condition #1 is satisfied and (2) either the condition #2 or #3 is satisfied.
  • some of the conditions may be a required condition (meaning that unless this condition is satisfied, UAV 102 may not report the flight path information) while some of the conditions may be an alternative condition (meaning that even if this condition is not satisfied, if another condition(s) is satisfied, UAV 102 may report the flight path information).
  • the reporting condition information may also indicate that said one or more conditions are valid only for certain time interval(s).
  • the reporting condition information may indicate that a condition #1 is valid only for a time interval #1 while a condition #2 is valid only for a time interval #2.
  • the reporting condition may indicate that conditions #1 and #2 are valid only for a time interval #3.
  • the reporting condition information may be included in a radio resource control (RRC) reconfiguration message and/or system information (SI) which RAN node 104 is configured to transmit towards UAV 102.
  • RRC radio resource control
  • SI system information
  • the flight path information includes one or more parameters related to the flight path of UAV 102.
  • the flight path information may indicate one or more of: an altitude of UAV 102, a speed of UAV 102, a remaining battery level of UAV 102 (and/or a remaining battery level of a component included in UAV 102), or a location of UAV 102.
  • the one or more conditions for reporting the flight path information are that one or more of these parameters of the flight path information has changed more than threshold value(s).
  • the reporting condition information may indicate that UAV 102 needs to report the flight path information if the value of parameter #1 has changed more than a threshold value #1 and/or the value of parameter #2 has changed more than a threshold value #2. This detection of the change of the value(s) of the parameter(s) may be performed via a direct measurement or may be an estimation.
  • the reporting condition information may also indicate a time interval during which the condition needs to be satisfied in order to trigger UAV 102 to report the flight path information.
  • the reporting condition information may indicate that UAV 102 needs to report the flight path information if the value of parameter #1 has changed more than a threshold value #1 within a time interval #1.
  • the condition for triggering the reporting is that the altitude of UAV 102 has changed more than P % or more than M meters within N seconds. In another example, the condition for triggering the reporting is that the speed of UAV 102 has changed more than P % within N seconds or that the location of UAV 102 has changed more than M meters within N seconds. In further example, the condition for triggering the reporting is that a battery level of UAV 102 or a battery level of a particular component within UAV 102 has changed more than P % within N seconds.
  • P corresponds to threshold values for triggering the reporting of the flight path information.
  • These threshold values may be predefined or may be configurable by RAN 104, core network node 106, or any other network entity.
  • the threshold values may be expressed in different units.
  • P may be expressed in absolute units (e.g., %, kilometers, degrees, etc.) and N may be expressed in terms of symbols, slots, subframes, etc.
  • the additional condition(s) comprises one or more of that:
  • a radio condition e.g., a signal-to-noise ratio (SNR) or a signal- to-interference and noise ratio (SINR) has changed by more than X dB over last N time units, where X and N are predefined or configurable).
  • SNR signal-to-noise ratio
  • SINR signal- to-interference and noise ratio
  • KI out-of-sync indication may define the entering condition of an event
  • K2 in-sync indication may define the leaving condition for an event
  • RLF radio link failure
  • UAV 102 has detected equipment failure or malfunctioning at UAV 102.
  • the measurement mode may be one of a relaxed measurement mode or a reference measurement mode.
  • a measurement period of the relaxed measurement mode may be longer than a measurement period of the reference measurement mode.
  • no measurement is performed for any neighboring cells and/or measurement is performed on a first number of carriers while, in the reference measurement mode, measurement is performed for one or more neighboring cells (e.g., all detected neighbor cells) and/or measurement is performed on a second number of carriers (e.g., all configured carriers), where the first number is less than the second number.
  • this type of event-triggered report can help the network (e.g., RAN node 104, core network node 106, etc.) to detect anomalies in the flight status and upon detecting the anomalies, the network can trigger actions such as informing UTM 108 or the traditional air traffic management system to take safety or security measures.
  • the network e.g., RAN node 104, core network node 106, etc.
  • actions such as informing UTM 108 or the traditional air traffic management system to take safety or security measures.
  • the triggering mechanism in the above described embodiments may be defined similar to the current radio resource management (RRM) events in TS 38.331 which are configured for an user equipment (UE) by IE measurement object.
  • a flight path reporting event may include a time for triggering the reporting (which means the reporting condition is valid for a configured amount of time).
  • UAV 102 may be configured to transmit new flight path information to the network (e.g., RAN node 104 or core network node 106) only when the change in at least one of the parameters related to the flight path of UAV 102 exceeds a certain predetermined threshold (e.g., pre-defined in the specifications, pre-configured in a SIM card, or configured by the network).
  • a certain predetermined threshold e.g., pre-defined in the specifications, pre-configured in a SIM card, or configured by the network.
  • UAV 102 may be configured to transmit to the network (e.g., RAN node 104 or core network node 106) only an indication message indicating that the flight path of UAV 102 has changed. In such embodiments, upon receiving the indication message, it is up to the network (e.g., RAN node 104 or core network node 106) to decide whether to request UAV 102 to transmit to the network new flight path information.
  • the network e.g., RAN node 104 or core network node 106
  • UAV 102 By configuring UAV 102 to only transmit the indication message when the change is less than the threshold value, the use of the amount of uplink data generated by flight path reports can be minimized while important changes in the flight path (such as a sudden drop of aircraft’s altitude) can be observed by the network with minimum delay.
  • a network entity may inform UAV 102 about one or more changes in the flight operational data upon which UAV 102 triggers a report (i.e., transmitting flight path information).
  • a report i.e., transmitting flight path information.
  • the network entity has obtained information related to changes in flight data from a network node such as UTM 108 or the traditional air traffic management system.
  • Information conveyed in the report from UAV 102 to the network entity may comprise one or more parameters indicating the radio conditions, such as measurements (e.g., signal strength measurements, signal quality measurements), state of the connection (e.g., insync, out-of-sync), detected beams, neighbor cells, etc.
  • measurements e.g., signal strength measurements, signal quality measurements
  • state of the connection e.g., insync, out-of-sync
  • detected beams e.g., neighbor cells, etc.
  • UAV 102 may be configured to transmit to the network a new flight report (a.k.a., new flight path information) when a battery level of UAV 102 or a battery level of a particular component of UAV 102 falls below a certain threshold.
  • the threshold may be configured by a network node (e.g., RAN node 104, core network node 106) or may be preconfigured.
  • the information included in the new flight report which is triggered by the change of the battery level may trigger the starting of an emergency landing procedure could be started.
  • UAV 102 may be configured to transit to the network a new flight path report (a.k.a., new flight path information) when UAV 102 detects equipment failure or malfunctioning (e.g., mechanical, electrical, temperature-related (overheating) malfunctioning, etc.).
  • equipment failure or malfunctioning e.g., mechanical, electrical, temperature-related (overheating) malfunctioning, etc.
  • This equipment failure/malfunctioning reporting may be of importance to minimize potential damages to, for example, human beings, infrastructure.
  • UAV 102 in order to avoid excessive flight path report (i.e., excessive transmission of flight path information) and to reduce the power consumption, UAV 102 may be configured to consider battery information of UAV 102 (e.g., a battery level of UAV 102 and/or a battery level of a component of UAV 102) while triggering flight path reporting. For example, in case the reporting condition information indicates that UAV 102 needs to report the flight path information if a condition #1 is satisfied, UAV 102 may not be triggered to report the flight path information if the remaining battery level of UAV is less than 10%.
  • battery information of UAV 102 e.g., a battery level of UAV 102 and/or a battery level of a component of UAV 102
  • UAV 102 may not be triggered to report the flight path information if the remaining battery level of UAV is less than 10%.
  • all or some possible triggering reasons (conditions) of flight path report may be assigned to corresponding priorities. Then, by considering the tradeoff between the priority of a triggering condition and the battery information, whether to trigger the flight path reporting can be decided.
  • a triggering condition a.k.a., triggering reason #1
  • transmission of the flight path report may be triggered regardless of the batter information (e.g., without considering the battery information).
  • the priority level of a triggering condition is medium or low, transmission of the flight path report may only be triggered if the remaining battery level is higher than a certain threshold value.
  • FIG. 2 shows a process 200 performed by an unmanned aerial vehicle (UAV) 102.
  • the UAV includes a wireless communication device (WCD).
  • Process 200 comprises step s202.
  • Step s202 comprises obtaining reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information.
  • the flight path information indicates a flight path of the UAV.
  • process 200 may comprise determining whether said one or more reporting conditions are satisfied; and at least based on determining that said one or more reporting conditions are satisfied, transmitting towards a network node the flight path information.
  • process 200 may comprise determining whether said one or more reporting conditions are satisfied; and at least based on determining that said one or more reporting conditions are not satisfied, transmitting towards a network node an indication message indicating that the flight path of the UAV has changed.
  • process 200 may comprise after transmitting the indication message towards the network node, receiving a reporting request for reporting the flight path information; and at least based on receiving the reporting request, transmitting towards the network node the flight path information.
  • the reporting condition information indicates that said one or more reporting conditions are valid only for a certain time interval.
  • the flight path information includes one or more parameters related to the flight path of the UAV, and said one or more reporting conditions for reporting the flight path information are that said one or more parameters have changed more than one or more threshold values.
  • said one or more reporting conditions for reporting the flight path information are that said one or more parameters have changed more than said one or more threshold values within given one or more time intervals.
  • said one or more parameters include one or more of an altitude of the UAV, a speed of the UAV, a remaining battery level of the UAV, a remaining battery level of the WCD, or a location of the UAV.
  • the flight path information is transmitted towards the network node further based on whether one or more additional reporting conditions is satisfied, and said one or more additional reporting conditions comprises one or more of that: a radio condition parameter has changed more than a threshold value, the WCD has detected KI out- of-sync indication or K2 in-sync indication, a radio link failure, RLF, timer has started, the WCD has detected a beam failure detection, BFD, the WCD has switched its measurement mode, or the WCD has detected equipment failure or malfunctioning at the UAV.
  • the radio condition parameter is a signal-to-noise ratio, SNR, or a signal-to-interference and noise ratio, SINR.
  • the measurement mode is one of a relaxed measurement mode or a reference measurement mode, and (i) a measurement period of the relaxed measurement mode is longer than a measurement period of the reference measurement mode, (ii) in the relaxed measurement mode, no measurement is performed for any neighboring cells and/or measurement is performed on a first number of carriers while, in the reference measurement mode, measurement is performed for one or more neighboring cells and/or measurement is performed on a second number of carriers, where the first number is less than the second number.
  • the flight path information indicates that at least some data included in the flight path information is valid only for a certain time interval.
  • obtaining the reporting condition information comprises receiving a radio resource control, RRC, reconfiguration message and/or system information, SI, and the RRC reconfiguration message and/or the SI include the reporting condition information, and the RRC reconfiguration message and/or the SI were transmitted by a network node.
  • process 200 may comprise obtaining restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information; and based on the restriction condition information, determining whether to transmit towards a network node the flight path information.
  • each of said one or more reporting conditions is assigned to a priority level, and whether to transmit the flight path information is determined further based on the priority level.
  • said one or more reporting conditions comprises a first reporting condition and/or a second reporting condition
  • the first reporting condition is assigned to a first priority level
  • the second reporting condition is assigned to a second priority level that is lower than the first priority level
  • the method comprises: determining that said one or more restriction conditions are satisfied; determining whether the first condition and/or the second condition is satisfied; and in case the first condition is satisfied, transmitting towards the network node the flight path information but in case the first condition is not satisfied, regardless of whether the second condition is satisfied, not transmitting towards the network node the flight path information.
  • FIG. 3 shows a process 300 performed by RAN node 104, a core network node 106, or any other network entity.
  • Process 300 comprises step s302.
  • Step s302 comprises transmitting towards an unmanned aerial vehicle (UAV) 102 reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information.
  • the flight path information indicates a flight path of the UAV, and the UAV comprises a wireless communication device (WCD) capable of communicating with the network node.
  • UAV unmanned aerial vehicle
  • WCD wireless communication device
  • process 300 comprises receiving the flight path information, wherein the flight path information was transmitted by the UAV based at least on that said one or more reporting conditions are satisfied.
  • process 300 comprises receiving an indication message indicating that the flight path of the UAV has changed, wherein the indication message was transmitted by the UAV based at least on that said one or more reporting conditions are not satisfied.
  • process 300 comprises after receiving the indication message, transmitting towards the UAV a reporting request for reporting the flight path information; and at least based on transmitting the reporting request, receiving the flight path information, wherein the flight path information was transmitted by the UAV.
  • the reporting condition information indicates that said one or more reporting conditions are valid only for a certain time interval.
  • the flight path information includes one or more parameters related to the flight path of the UAV, and said one or more reporting conditions for reporting the flight path information are that said one or more parameters have changed more than one or more threshold values.
  • said one or more reporting conditions for reporting the flight path information are that said one or more parameters have changed more than said one or more threshold values within given one or more time intervals.
  • said one or more parameters include one or more of: an altitude of the UAV, a speed of the UAV, a remaining battery level of the UAV, or a location of the UAV.
  • the flight path information was transmitted by the UAV further based on that one or more additional reporting conditions are satisfied, and said one or more additional reporting conditions comprises one or more of that: a radio condition parameter has changed more than a threshold value, the WCD has detected KI out-of-sync indication or K2 in-sync indication, a radio link failure, RLF, timer has started, the WCD has detected a beam failure detection, BFD, the WCD has switched its measurement mode, or the WCD has detected equipment failure or malfunctioning at the UAV.
  • the radio condition parameter is a signal-to-noise ratio, SNR, or a signal-to-interference and noise ratio, SINR.
  • the measurement mode is one of a relaxed measurement mode or a reference measurement mode, and (i) a measurement period of the relaxed measurement mode is longer than a measurement period of the reference measurement mode, (ii) in the relaxed measurement mode, no measurement is performed for any neighboring cells and/or measurement is performed on a first number of carriers while, in the reference measurement mode, measurement is performed for one or more neighboring cells and/or measurement is performed on a second number of carriers, where the first number is less than the second number.
  • the flight path information indicates that at least some data included in the flight path information is valid only for a certain time interval.
  • transmitting the reporting condition information comprises transmitting a radio resource control, RRC, reconfiguration message and/or system information, SI, and the RRC reconfiguration message and/or the SI includes the reporting condition information.
  • process 300 comprises transmitting towards the UAV restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information, wherein whether to transmit the flight path information from the UAV is determined based on the restriction condition information.
  • each of said one or more reporting conditions is assigned to a priority level, and whether to transmit the flight path information from the UAV is determined further based on the priority level.
  • said one or more reporting conditions comprises a first reporting condition and/or a second reporting condition
  • the first reporting condition is assigned to a first priority level
  • the second reporting condition is assigned to a second priority level that is lower than the first priority level
  • the flight path information is transmitted towards the network node, but in case (i) said one or more restriction conditions are satisfied and (ii) the first condition is not satisfied, regardless of whether the second condition is satisfied, the flight path information is not transmitted towards the network node.
  • FIG. 4 is a block diagram of the WCD included in UAV 102, according to some embodiments.
  • the WCD may comprise: processing circuitry (PC) 402, which may include one or more processors (P) 455 (e.g., one or more general purpose microprocessors and/or one or more other processors, such as an application specific integrated circuit (ASIC), field-programmable gate arrays (FPGAs), and the like); communication circuitry 448, which is coupled to an antenna arrangement 449 comprising one or more antennas and which comprises a transmitter (Tx) 445 and a receiver (Rx) 447 for enabling UE 102 to transmit data and receive data (e.g., wirelessly transmit/receive data); and a local storage unit (a.k.a., “data storage system”) 408, which may include one or more non-volatile storage devices and/or one or more volatile storage devices.
  • PC processing circuitry
  • P processors
  • ASIC application specific integrated circuit
  • FPGAs field-programmable gate arrays
  • CPP 441 includes a computer readable medium (CRM) 442 storing a computer program (CP) 443 comprising computer readable instructions (CRI) 444.
  • CRM 442 may be a non-transitory computer readable medium, such as, magnetic media (e.g., a hard disk), optical media, memory devices (e.g., random access memory, flash memory), and the like.
  • the CRI 444 of computer program 443 is configured such that when executed by PC 402, the CRI causes UE 102 to perform steps described herein (e.g., steps described herein with reference to the flow charts).
  • UE 102 may be configured to perform steps described herein without the need for code. That is, for example, PC 402 may consist merely of one or more ASICs. Hence, the features of the embodiments described herein may be implemented in hardware and/or software.
  • FIG. 5 is a block diagram of network node 500 (e.g., RAN node 104), according to some embodiments.
  • network node 500 may comprise: processing circuitry (PC) 502, which may include one or more processors (P) 555 (e.g., one or more general purpose microprocessors and/or one or more other processors, such as an application specific integrated circuit (ASIC), field-programmable gate arrays (FPGAs), and the like), which processors may be co-located in a single housing or in a single data center or may be geographically distributed (i.e., network node 500 may be a distributed computing apparatus); at least one network interface 548 (e.g., a physical interface or air interface) comprising a transmitter (Tx) 545 and a receiver (Rx) 547 for enabling network node 500 to transmit data to and receive data from other nodes connected to a network 110 (e.g., an Internet Protocol (IP) network) to which network interface 548 is connected
  • IP Internet Protocol
  • a computer readable storage medium may be provided.
  • CRSM 542 may store a computer program (CP) 543 comprising computer readable instructions (CRI) 544.
  • CP computer program
  • CRSM 542 may be a non-transitory computer readable medium, such as, magnetic media (e.g., a hard disk), optical media, memory devices (e.g., random access memory, flash memory), and the like.
  • the CRI 544 of computer program 543 is configured such that when executed by PC 502, the CRI causes network node 500 to perform steps described herein (e.g., steps described herein with reference to the flow charts).
  • network node 500 may be configured to perform steps described herein without the need for code. That is, for example, PC 502 may consist merely of one or more ASICs. Hence, the features of the embodiments described herein may be implemented in hardware and/or software.
  • the method of statement Al comprising: determining whether said one or more reporting conditions are satisfied; and at least based on determining that said one or more reporting conditions are satisfied, transmitting towards a network node the flight path information.
  • the method of statement Al comprising: determining whether said one or more reporting conditions are satisfied; and at least based on determining that said one or more reporting conditions are not satisfied, transmitting towards a network node an indication message indicating that the flight path of the UAV has changed.
  • A4 The method of statement A3, comprising: after transmitting the indication message towards the network node, receiving a reporting request for reporting the flight path information; and at least based on receiving the reporting request, transmitting towards the network node the flight path information.
  • A6 The method of any one of statements A1-A5, wherein the flight path information includes one or more parameters related to the flight path of the UAV, and said one or more reporting conditions for reporting the flight path information are that said one or more parameters have changed more than one or more threshold values.
  • A8 The method of statement A6 or A7, wherein said one or more parameters include one or more of an altitude of the UAV, a speed of the UAV, a remaining battery level of the UAV, a remaining battery level of the WCD, or a location of the UAV.
  • A9 The method of any one of statements A2 and A5-A8 (when A5-A8 depend on A2), wherein the flight path information is transmitted towards the network node further based on whether one or more additional reporting conditions is satisfied, and said one or more additional reporting conditions comprises one or more of that: a radio condition parameter has changed more than a threshold value, the WCD has detected KI out-of-sync indication or K2 in-sync indication, a radio link failure, RLF, timer has started, the WCD has detected a beam failure detection, BFD, the WCD has switched its measurement mode, or the WCD has detected equipment failure or malfunctioning at the UAV.
  • a radio condition parameter has changed more than a threshold value
  • the WCD has detected KI out-of-sync indication or K2 in-sync indication
  • RLF radio link failure
  • timer timer has started
  • the WCD has detected a beam failure detection, BFD
  • the WCD has switched its measurement mode
  • the WCD has
  • radio condition parameter is a signal - to-noise ratio, SNR, or a signal-to-interference and noise ratio, SINR.
  • a measurement period of the relaxed measurement mode is longer than a measurement period of the reference measurement mode, (ii) in the relaxed measurement mode, no measurement is performed for any neighboring cells and/or measurement is performed on a first number of carriers while, in the reference measurement mode, measurement is performed for one or more neighboring cells and/or measurement is performed on a second number of carriers, where the first number is less than the second number.
  • obtaining the reporting condition information comprises receiving a radio resource control, RRC, reconfiguration message and/or system information, SI, and the RRC reconfiguration message and/or the SI include the reporting condition information, and the RRC reconfiguration message and/or the SI were transmitted by a network node.
  • Al 4 The method of any one of statements Al -Al 3, comprising: obtaining restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information; and based on the restriction condition information, determining whether to transmit towards a network node the flight path information.
  • said one or more reporting conditions comprises a first reporting condition and/or a second reporting condition
  • the first reporting condition is assigned to a first priority level
  • the second reporting condition is assigned to a second priority level that is lower than the first priority level
  • the method comprises: determining that said one or more restriction conditions are satisfied; determining whether the first condition and/or the second condition is satisfied; and in case the first condition is satisfied, transmitting towards the network node the flight path information in case the first condition is not satisfied, regardless of whether the second condition is satisfied, not transmitting towards the network node the flight path information.
  • a method (300) performed by a network node e.g., 104 or 106, the method comprising: transmitting (s302) towards an unmanned aerial vehicle, UAV (102), reporting condition information which indicates one or more reporting conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV, and the UAV comprises a wireless communication device, WCD, capable of communicating with the network node.
  • a network node e.g., 104 or 106
  • WCD wireless communication device
  • statement Bl comprising: receiving the flight path information, wherein the flight path information was transmitted by the UAV based at least on that said one or more reporting conditions are satisfied.
  • statement Bl comprising: receiving an indication message indicating that the flight path of the UAV has changed, wherein the indication message was transmitted by the UAV based at least on that said one or more reporting conditions are not satisfied.
  • statement B4 comprising: after receiving the indication message, transmitting towards the UAV a reporting request for reporting the flight path information; and at least based on transmitting the reporting request, receiving the flight path information, wherein the flight path information was transmitted by the UAV.
  • reporting condition information indicates that said one or more reporting conditions are valid only for a certain time interval.
  • the radio condition parameter is a signal - to-noise ratio, SNR, or a signal-to-interference and noise ratio, SINR.
  • a measurement period of the relaxed measurement mode is longer than a measurement period of the reference measurement mode, (ii) in the relaxed measurement mode, no measurement is performed for any neighboring cells and/or measurement is performed on a first number of carriers while, in the reference measurement mode, measurement is performed for one or more neighboring cells and/or measurement is performed on a second number of carriers, where the first number is less than the second number.
  • reporting condition information comprises transmitting a radio resource control, RRC, reconfiguration message and/or system information, SI, and the RRC reconfiguration message and/or the SI includes the reporting condition information.
  • said one or more reporting conditions comprises a first reporting condition and/or a second reporting condition
  • the first reporting condition is assigned to a first priority level
  • the second reporting condition is assigned to a second priority level that is lower than the first priority level
  • said one or more restriction conditions are satisfied and (ii) the first condition is satisfied
  • the flight path information is transmitted towards the network node
  • said one or more restriction conditions are satisfied and (ii) the first condition is not satisfied, regardless of whether the second condition is satisfied, the flight path information is not transmitted towards the network node.
  • a computer program (443 or 543) comprising instructions (444 or 544) which when executed by processing circuitry (402 or 502) of an UAV or a network node causes the UAV or the network node to perform the method of any one of the statements Al -Bl 6.
  • a carrier containing the computer program of statement Cl wherein the carrier is one of an electronic signal, an optical signal, a radio signal, and a computer readable storage medium (442 or 542).
  • a network node e.g., 104 or 106
  • the network node being configured to: transmit (s302) towards an unmanned aerial vehicle, UAV (102), reporting condition information which indicates one or more conditions for the UAV to report flight path information, wherein the flight path information indicates a flight path of the UAV, and the UAV comprises a wireless communication device, WCD, capable of communicating with the network node.
  • WCD wireless communication device
  • An apparatus comprising: a processing circuitry (202 or 302); and a memory (241 or 341), said memory containing instructions executable by said processing circuitry, whereby the apparatus is operative to perform the method of any one of statements A 1 -B 16.
  • transmitting a message “to” or “toward” an intended recipient encompasses transmitting the message directly to the intended recipient or transmitting the message indirectly to the intended recipient (i.e., one or more other nodes are used to relay the message from the source node to the intended recipient).
  • receiving a message “from” a sender encompasses receiving the message directly from the sender or indirectly from the sender (i.e., one or more nodes are used to relay the message from the sender to the receiving node). Further, as used herein “a” means “at least one” or “one or more.”

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé mis en œuvre par un véhicule aérien sans pilote (UAV), l'UAV comprenant un dispositif de communication sans fil (WCD). Le procédé consiste à : obtenir des informations de condition de rapport qui indiquent une ou plusieurs conditions pour que l'UAV rapporte des informations de trajectoire de vol, les informations de trajectoire de vol indiquant une trajectoire de vol de l'UAV. Les informations de trajectoire de vol comprennent un ou plusieurs paramètres associés à la trajectoire de vol de l'UAV. La ou les conditions de rapport pour rapporter les informations de trajectoire de vol sont que le ou les paramètres ont changé au-delà d'une ou plusieurs valeurs de seuil dans un ou plusieurs intervalles de temps donnés.
PCT/IB2023/059236 2022-09-29 2023-09-18 Rapport d'informations de trajectoire de vol WO2024069309A1 (fr)

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CN2022122677 2022-09-29

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3876586A1 (fr) * 2018-11-01 2021-09-08 NTT DoCoMo, Inc. Dispositif d'utilisateur et dispositif station de base
WO2022061731A1 (fr) * 2020-09-25 2022-03-31 Lenovo (Beijing) Limited Procédé et appareil de rapport de trajet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3876586A1 (fr) * 2018-11-01 2021-09-08 NTT DoCoMo, Inc. Dispositif d'utilisateur et dispositif station de base
WO2022061731A1 (fr) * 2020-09-25 2022-03-31 Lenovo (Beijing) Limited Procédé et appareil de rapport de trajet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
3GPP TS 38.331

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