Reporting flight route information

Abstract

A method is disclosed that is implemented by an unmanned aerial vehicle (UAV), the UAV including a wireless communication device (WCD). The method includes obtaining reporting condition information that indicates one or more conditions for the UAV to report flight path information, the flight path information indicating 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 beyond one or more thresholds within one or more given time intervals.

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION Embodiments relating to methods, apparatus, and computer-readable media for reporting flight path information are disclosed. [Background technology]

[0002] Unmanned Aerial Vehicle (UAV) Communications in the Third Generation Partnership Project (3GPP)

[0003] The use of drones (also known as UAVs) is becoming increasingly prevalent. There are numerous use cases for UAVs in industry, including goods transportation and delivery, surveillance, and media production.

[0004] Traditionally, UAVs could only be operated by a controller within the UAV's visual line of sight (VLoS). Realizing the great potential of connecting drones beyond visual line of sight (BVLoS), for example, via cellular networks, 3GPP specified several features in Release 15 (Rel-15) of 3GPP's Long Term Evolution (LTE) aimed at improving the efficiency and robustness of terrestrial LTE networks to provide air connectivity services, especially for low-altitude UAVs. These features target both command and control traffic for flying drones and data (also known as payload) traffic from drones to cellular networks.

[0005] The specified key features include: i) support for subscription-based identification, ii) height reporting when the UAV crosses a height threshold (the report may include height, location (3D), and horizontal and vertical velocity), iii) per-event Reference Signal Received Power (RSRP) reporting 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 by the UE to a base station (e.g., an evolved Node B (eNB)). The flight path information includes network polling, a list of waypoints (3D locations), and, if available, a list of timestamps.

[0006] Flight Path Reporting for UAVs in LTE Rel-15

[0007] Section 23.17.5, "Flight Path Information Reporting," of the 3GPP Technical Specification (TS) ("TS36.300") titled "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2" (TS36.300 V17.1.0, available as of August 7, 2023, at https: / / portal.3gpp.org / desktopmodules / Specifications / SpecificationDetails.aspx?specificationId=2430) states that "E-UTRAN may request the UE to report flight path information consisting of a number of waypoints, specified as 3D locations, as specified in TS36.355. The UE shall report up to a configured number of waypoints if flight path information is available at the UE. The report may also consist of a timestamp for each waypoint if configured in the request and if available at the UE."

[0008] Signaling is via the Radio Resource Control (RRC) protocol as specified in the 3GPP TS titled “LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification” (TS36.331, V17.1.0, as of August 7, 2023, available at https: / / portal.3gpp.org / desktopmodules / Specifications / SpecificationDetails.aspx?specificationId=2440) (“TS36.331”). It is assumed that the UE receives a flight route plan from the unmanned aircraft system traffic management (UTM), or it is pre-configured by the user prior to flight and therefore before the Radio Resource Control (RRC) connection is established.

[0009] TS36.331 defines an information element (IE) (also known as a data structure) called "FlightPathInfoReportConfig." This IE configures the maximum number of waypoints that the UE can report back, as well as a timestamp (if desired by the network). The IEs contained in FlightPathInfoReportConfig are shown below in Table 1. TIFF2025534331000002.tif26170

[0010] The maxWayPointNumber IE indicates the maximum number of waypoints that the UE can include in a flight path information report, if this information is available at the UE. The includeTimeStamp IE indicates whether a timestamp for each waypoint can be reported in the flight path information report, if timestamp information is available at the UE.

[0011] TS36.331 also defines a flight path information report, an IE called "FlightPathInfoReport." Table 2 below shows the IEs contained in the FlightPathInfoReport IE. TIFF2025534331000003.tif26170

[0012] As shown in Table 2, the flight path information report comprises a list of elements of type WayPointLocation, which are defined as shown in Table 3. TIFF2025534331000004.tif31170

[0013] 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 AbsoluteTimeInfo. The IE LocationInfo is used to transfer detailed location information available at the UE to correlate measurements with UE position information. The definition of the LocationInfo IE is shown below in Table 4. TIFF2025534331000005.tif117170

[0014] LocationInfo field descriptions are provided below in Table 5. TIFF2025534331000006.tif189170

[0015] The AbsoluteTimeInfo IE indicates absolute time in the format YY-MM-DD HH:MM:SS and using binary-coded decimal (BCD) encoding. The first / left-most bit of the bit string contains the most significant bit of the most significant digit of the year, and so on. Table 6 below shows the AbsoluteTimeInfo IE. TIFF2025534331000007.tif11170

[0016] Flight Path Reporting for UAVs in 5G New Radio (NR)

[0017] In RAN#94-e, a new Release 18 (Rel-18) Work Item (WI) for supporting UAVs in NR has been approved in RP-123600 (RP-123600, New WID on NR Support for UAVs (Unmanned Air Vehicles), RAN#94, December 2021), with one objective to specify flight path reporting signaling for NR via RRC. The flight path reporting framework in LTE Rel-15 is the baseline for Rel-18 discussions.

[0018] Additionally, in Rel-18, 3GPP is also working on a RAN4 work item to support air-to-ground communications (i.e., using ground base stations to provide cellular connectivity to commercial airliners). In particular, flight path reporting from the aircraft to the network is also being discussed.

[0019] 3GPP TS38.331 V17.1.0 (TS38.331) specifies the 5G NR RRC protocol. TS38.331 defines an IE called LocationInfo, which is used to transfer detailed location information available at the UE, Bluetooth, wireless local area network (WLAN), and available sensor measurements, and can be used as a starting point for UAV / aircraft flight path reporting. Table 7 below shows the definition of the LocationInfo IE. TIFF2025534331000008.tif41170

[0020] The IE CommonLocationInfo is used to transfer detailed location information available at the UE to correlate measurements with UE position information. The data type CommonLocationInfo is defined below in Table 8. TIFF2025534331000009.tif46170

[0021] CommonLocationInfo field descriptions are provided below in Table 9. TIFF2025534331000010.tif103170

[0022] Unmanned Aircraft System (UAS) Traffic Management (UTM)

[0023] Keeping airspace safe and accessible is of paramount importance. Therefore, a system called UTM is being developed in different parts of the world to manage UAS traffic (UAS consists of a UAV and UAV controller used by an operator with unique credentials and identification). According to the National Aeronautics and Space Administration (NASA), UTM is a collaborative, automated, and federated airspace management approach that enables safe, efficient, and equitable small UAS operations at scale. The UTM concept has been adopted and implemented by many countries and regions around the world, such as the United States, Europe, Japan, and Australia.

[0024] According to TS36.300, 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 that considers various aspects, e.g., UAV performance, weather conditions; 3) operator messaging: exchanging messages between operators, e.g., about location and status information; 4) Federal Aviation Administration (FAA) messaging: providing on-demand, periodic, or event-triggered communication with FAA systems to meet regulatory requirements; 5) mapping: information about airspace restrictions, obstacles, and sensitive areas; and 6) collision advisory: real-time alerting for collision avoidance.

[0025] A mobile network can enable reliable connectivity between the UAV and its controller, while the UTM can connect to the UAV and its controller through a core network and a radio access network (RAN). An illustration of UAS-UTM connectivity is provided in FIG. 6.

[0026] Air-to-Ground (ATG) Communications

[0027] In 3GPP terminology, air-to-ground (ATG or A2G) communications refers to communications between ground base stations and commercial aircraft. Technical solutions for ATG are implicitly included in the 3GPP work on non-terrestrial networks (NTNs) in Rel-17. In Rel-18, a RAN4 work item for ATG (RP-220962) is underway to specify radio frequency (RF) and radio resource management (RRM) requirements for ATG, with the following scope: 1) providing in-flight connectivity using ground base stations; 2) targeting cell coverage up to 300 km and UE speeds of 1200 km / h; and 3) exemplary bands n1 (FDD), n78 (TDD), and n79 (TDD). The RRM work describes aspects related to flight path reporting from UEs. Summary of the Invention

[0028] Currently, several challenges exist. For example, flight path reporting, which is used as a baseline for NR UAV WI, was specified in LTE, but there is room for improvement when considering reporting for NR. One limitation relates to the triggering of flight path reporting. In LTE, flight path reporting is reported by the UE only when the UE is requested by the network. As a result, the network may not be aware of recent changes in flight path that occur between requests. This can lead to adverse effects on radio communications to / from the UE and potentially to the safe and secure operation of the UE. Furthermore, in the ATG work item, RAN4 concluded that the UE should notify the network regarding changes in flight path, speed, or altitude.

[0029] Thus, in one aspect, a method is provided for implementation by an unmanned aerial vehicle (UAV). The UAV includes a wireless communication device (WCD). The method includes obtaining reporting condition information indicating one or more reporting conditions for the UAV to report flight path information, the flight path information indicating 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 beyond one or more thresholds within one or more given time intervals.

[0030] In another aspect, a method implemented by a network node is provided. The method includes transmitting, to an unmanned aerial vehicle (UAV), reporting condition information indicating one or more reporting conditions for the UAV to report flight path information, the flight path information indicating a flight path of the UAV, the UAV comprising a wireless communication device (WCD) capable of communicating with the network node. 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 beyond one or more thresholds within one or more given time intervals.

[0031] In another aspect, a computer program is provided that includes instructions that, when executed by processing circuitry of a UAV or a network node, cause the UAV or the network node to perform a method according to any one of the embodiments described above.

[0032] In another aspect, there is provided a carrier containing a computer program according to any of the above-described embodiments, the carrier being one of an electronic signal, an optical signal, a radio signal, and a computer-readable storage medium.

[0033] In another aspect, an unmanned aerial vehicle (UAV) is provided. The UAV includes a wireless communication device (WCD). The UAV is configured to acquire reporting condition information indicating one or more reporting conditions for the UAV to report flight path information, the flight path information indicating 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 beyond one or more thresholds within one or more given time intervals.

[0034] In another aspect, a network node is provided. The network node is configured to transmit, to an unmanned aerial vehicle (UAV), reporting condition information indicating one or more reporting conditions for the UAV to report flight path information, the flight path information indicating 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 beyond one or more thresholds within one or more given time intervals. The UAV comprises a wireless communication device (WCD) capable of communicating with the network node.

[0035] In another aspect, an apparatus is provided, the apparatus comprising a processing circuit and a memory, the memory including instructions executable by the processing circuit, such that the apparatus is operable to perform a method according to any one of the embodiments described above.

[0036] In another aspect, a computer program is provided comprising instructions that, when executed by a processing circuit of the device, cause the device to perform any of the methods disclosed herein. In one embodiment, a carrier containing the computer program is provided, the carrier being one of an electronic signal, an optical signal, a radio signal, and a computer-readable storage medium. In another aspect, an apparatus configured to perform the methods disclosed herein is provided. The apparatus may include a memory and a processing circuit coupled to the memory.

[0037] An objective of some embodiments is to help improve network operational awareness of air UEs through new reporting triggering procedures, and to minimize impact on wireless communications to / from the UEs, potentially minimizing impact on safe and secure operation of the air UEs.

[0038] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate various embodiments. For a better understanding of embodiments of the present disclosure, and to show how the same may be put into effect, reference will now be made, by way of example only, to the accompanying drawings, in which: [Brief explanation of the drawings]

[0039] [Figure 1] FIG. 1 illustrates a system, according to one embodiment. [Figure 2] FIG. 1 illustrates a process, according to one embodiment. [Figure 3] FIG. 1 illustrates a process, according to one embodiment. [Figure 4] FIG. 1 illustrates an apparatus, according to one embodiment. [Figure 5] FIG. 1 illustrates an apparatus, according to one embodiment. [Figure 6] FIG. 1 illustrates an example of UAS-UTM connectivity. DETAILED DESCRIPTION OF THE INVENTION

[0040] 1 illustrates a portion of a system 100 according to one embodiment. The system 100 includes an unmanned aerial vehicle (UAV) 102, a radio access network (RAN) node 104, a core network node 106, and an unmanned aircraft system (UAS) traffic management (UTM) entity 108.

[0041] The UAV 102 may include a wireless communication device capable of communicating with the RAN node 104. The UAV 102 is connected to the UTM 108 via the RAN node 104 and the core network node 106. The UTM 108 is configured to manage traffic for the UAV 102.

[0042] As described above, the UAV 102 needs to be triggered to transmit flight path information indicating the flight path of the UAV 102 to the RAN node 104. One way is for the UAV 102 to send a report request to report the flight path information. However, in some scenarios, it may be desirable for the UAV 102 to report the flight path information based on the occurrence of one or more reporting conditions (e.g., when the altitude of the UAV 102 suddenly decreases).

[0043] Thus, in some embodiments, the RAN node 104 may transmit reporting condition information toward the UAV 102. The reporting condition information indicates one or more conditions for the UAV 102 to report flight path information indicating the flight path of the UAV 102 to the RAN node 104 and / or the core network node 106.

[0044] For example, the reporting condition information may indicate condition #1 and condition #2. The UAV 102 may be configured to report flight path information only when condition #1 and #2 are met, or to report flight path information only when condition #1 or condition #2 is met. In another example, the reporting condition information may indicate condition #1, condition #2, and condition #3. In this example, the UAV 102 may be configured to report flight path information only when (1) condition #1 is met and (2) either condition #2 or #3 is met. In summary, when the reporting condition information indicates two or more conditions, some of the conditions are required conditions (meaning that the UAV 102 should not report flight path information unless this condition is met), and some of the conditions are alternative conditions (meaning that the UAV 102 may report flight path information even if this condition is not met if another condition(s) is met).

[0045] In some embodiments, the reporting condition information may also indicate that the one or more conditions are valid only during certain time interval(s). For example, the reporting condition information may indicate that condition #1 is valid only during time interval #1 and that condition #2 is valid only during time interval #2. In another example, the reporting condition may indicate that conditions #1 and #2 are valid only during time interval #3.

[0046] The reporting condition information may be included in a radio resource control (RRC) reconfiguration message and / or system information (SI) that the RAN node 104 is configured to send to the UAV 102.

[0047] In some embodiments, the flight path information includes one or more parameters related to the flight path of the UAV 102. For example, the flight path information may indicate one or more of an altitude of the UAV 102, a speed of the UAV 102, a remaining battery level of the UAV 102 (and / or a remaining battery level of a component included in the UAV 102), or a location of the UAV 102.

[0048] In some embodiments, the one or more conditions for reporting the flight path information is that one or more of these parameters of the flight path information have changed beyond threshold(s). For example, if the flight path information includes a value for parameter #1 and a value for parameter #2, the reporting condition information may indicate that UAV 102 should report the flight path information if the value of parameter #1 has changed beyond threshold #1 and / or the value of parameter #2 has changed beyond threshold #2. This detection of a change in the value(s) of the parameter(s) may be performed via direct measurement or may be estimated.

[0049] In some embodiments, the reporting condition information may also indicate a time interval during which a condition must be met to trigger UAV 102 to report flight path information. For example, the reporting condition information may indicate that UAV 102 should report flight path information if the value of parameter #1 changes by more than threshold #1 within time interval #1.

[0050] In one example, the condition for triggering a report is that the altitude of the UAV 102 has changed by more than P% or more than M meters within N seconds. In another example, the condition for triggering a report is that the velocity of the UAV 102 has changed by more than P% within N seconds, or that the location of the UAV 102 has changed by more than M meters within N seconds. In a further example, the condition for triggering a report is that the battery level of the UAV 102 or the battery level of a particular component within the UAV 102 has changed by more than P% within N seconds.

[0051] Here, "P," "M," and "N" correspond to thresholds for triggering reporting of flight path information. These thresholds may be predefined or may be configurable by the RAN 104, the core network node 106, or any other network entity. The thresholds may be expressed in different units. For example, "P" may be expressed in absolute units (e.g., %, kilometers, degrees, etc.), and N may be expressed in terms of symbols, slots, subframes, etc.

[0052] In some embodiments, in addition to or instead of the condition(s) described above, there may be one or more additional conditions for triggering the UAV 102 to report flight path information. The additional condition(s) may include: - there is a change in radio conditions (e.g., the signal-to-noise ratio (SNR) or signal-to-interference-and-noise ratio (SINR) has changed by more than X dB over the last N time units, where X and N are predefined or configurable); that the UAV 102 has detected a K1 out-of-sync indication (which may define a beginning condition for the event) or a K2 in-sync indication (which may define an ending condition for the event); - that the Radio Link Failure (RLF) timer has started; - UAV102 detected a beam failure detection (BFD); - UAV102 has switched its measurement mode, or - UAV102 detects an equipment failure or malfunction in UAV102. Contains one or more of:

[0053] The measurement mode may be one of a relaxed measurement mode or a reference measurement mode. The measurement period of the relaxed measurement mode may be longer than the measurement period of the reference measurement mode. Additionally or alternatively, in the relaxed measurement mode, measurements are not performed for neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed for one or more neighboring cells (e.g., all detected neighboring cells) and / or measurements are performed on a second number of carriers (e.g., all configured carriers), where the first number is smaller than the second number.

[0054] In many use cases, this type of event-triggered reporting can help the network (e.g., RAN node 104, core network node 106, etc.) detect anomalies in flight status, which can trigger actions such as notifying UTM 108 or a legacy air traffic management system to take safety or security measures.

[0055] The triggering mechanism in the above-described embodiments may be defined similarly to current radio resource management (RRM) events in TS 38.331 configured for user equipment (UE) by the IE measurement object. Similarly, a flight path reporting event may include a time to trigger a report (meaning the reporting condition is valid for a configured amount of time). Also provided is a hysteresis to avoid ping-pong triggering, as well as a reportOnleave, which allows the network to configure whether the UE should report when the end condition of the event is met.

[0056] In some embodiments, the UAV 102 may be configured to transmit new flight path information to the network (e.g., the RAN node 104 or the core network node 106) only when a change in at least one of the parameters related to the flight path of the UAV 102 exceeds a predetermined threshold (e.g., predefined in a specification, pre-set in a SIM card, or set by the network).

[0057] If the change does not exceed a threshold, in some embodiments, the UAV 102 may be configured to only send an indication message to the network (e.g., the RAN node 104 or the core network node 106) indicating that the flight path of the UAV 102 has changed. In such embodiments, it is up to the network (e.g., the RAN node 104 or the core network node 106) to determine, upon receipt of the indication message, whether to request the UAV 102 to transmit new flight path information to the network. By configuring the UAV 102 to only send indication messages when the change is less than a threshold, the amount of uplink data usage generated by flight path reporting may be minimized, and significant changes in flight path (such as a sudden drop in the aircraft's altitude) may be observed by the network with minimal delay.

[0058] In some embodiments, a network entity (e.g., RAN node 104, core network node 106, etc.) may notify UAV 102 of one or more changes in flight operation data, at which time UAV 102 triggers a report (i.e., transmits flight path information). In these embodiments, it is assumed that the network entity obtained information related to the change in flight data from a network node such as UTM 108 or a legacy air traffic management system.

[0059] The information conveyed in the report from UAV102 to the network entity may comprise one or more parameters indicating radio conditions, such as measurements (e.g., signal strength measurements, signal quality measurements), the state of the connection (e.g., in sync, out of sync), detected beams, neighboring cells, etc.

[0060] In some embodiments, the UAV 102 may be configured to send a new flight report (also known as new flight path information) to the network when the battery level of the UAV 102 or the battery level of a particular component of the UAV 102 falls below a certain threshold. The threshold may be set by a network node (e.g., the RAN node 104, the core network node 106) or may be pre-set. The information contained in the new flight report, triggered by a change in battery level, may trigger that the initiation of an emergency landing procedure may be initiated.

[0061] Additionally or alternatively, the UAV 102 may be configured to pass a new flight path report (a.k.a., new flight path information) to the network when the UAV 102 detects an equipment failure or malfunction (e.g., mechanical, electrical, temperature-related (overheating) malfunction, etc.). This equipment failure / malfunction report may be important to minimize potential damage, e.g., to humans, infrastructure, etc.

[0062] In some embodiments, to avoid excessive flight path reporting (i.e., excessive transmission of flight path information) and to reduce power consumption, the UAV 102 may be configured to consider battery information of the UAV 102 (e.g., the battery level of the UAV 102 and / or the battery levels of components of the UAV 102) while triggering a flight path report. For example, if the reporting condition information indicates that the UAV 102 needs to report flight path information if condition #1 is met, the UAV 102 may not be triggered to report flight path information if the remaining battery level of the UAV is less than 10%.

[0063] In some embodiments, all or some of the possible triggering reasons (conditions) for a flight path report may be assigned corresponding priorities, and then it may be determined whether to trigger a flight path report by considering the trade-off between the priority of the triggering condition and the battery information.

[0064] For example, if the priority level of the triggering condition (a.k.a., triggering reason #1) is high (e.g., in the case of an emergency or security issue), the transmission of the flight path report may be triggered regardless of (e.g., without considering) the battery information, whereas if the priority level of the triggering condition is medium or low, the transmission of the flight path report may be triggered only if the remaining battery level is higher than a certain threshold.

[0065] 2 shows a process 200 performed by an unmanned aerial vehicle (UAV) 102. The UAV includes a wireless communication device (WCD). Process 200 includes step s202. Step s202 includes obtaining reporting condition information indicating one or more reporting conditions for the UAV to report flight path information. The flight path information indicates a flight path of the UAV.

[0066] In some embodiments, process 200 may include determining whether the one or more reporting conditions are met and transmitting flight path information toward a network node based at least on determining that the one or more reporting conditions are met.

[0067] In some embodiments, process 200 may include determining whether the one or more reporting conditions are met and, based at least on determining that the one or more reporting conditions are not met, sending an instruction message to a network node indicating that the flight path of the UAV has changed.

[0068] In some embodiments, process 200 may include, after sending an instruction message toward the network node, receiving a report request to report flight path information, and sending the flight path information toward the network node based at least on receiving the report request.

[0069] In some embodiments, the reporting condition information indicates that said one or more reporting conditions are valid only for a certain time interval.

[0070] In some embodiments, the flight path information includes one or more parameters related to the flight path of the UAV, and the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed beyond one or more thresholds.

[0071] In some embodiments, the one or more reporting conditions for reporting flight path information is that the one or more parameters have changed by more than the one or more thresholds within one or more given time intervals.

[0072] In some embodiments, the 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.

[0073] In some embodiments, the flight path information is transmitted to the network node further based on whether one or more additional reporting conditions are met, the one or more additional reporting conditions including one or more of: a radio condition parameter has changed beyond a threshold; the WCD has detected a K1 out-of-sync indication or a 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 an equipment failure or malfunction in the UAV.

[0074] In some embodiments, the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).

[0075] In some embodiments, the measurement mode is one of a relaxed measurement mode or a reference measurement mode, where (i) the measurement period of the relaxed measurement mode is longer than the measurement period of the reference measurement mode, and (ii) in the relaxed measurement mode, measurements are not performed for neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed for one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number.

[0076] In some embodiments, the flight path information indicates that at least some of the data contained in the flight path information is valid only for a certain time interval.

[0077] In some embodiments, obtaining the reporting condition information includes receiving a radio resource control (RRC) reconfiguration message and / or system information (SI), the RRC reconfiguration message and / or SI including the reporting condition information, the RRC reconfiguration message and / or SI being transmitted by the network node.

[0078] In some embodiments, the process 200 may include obtaining restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information, and determining, based on the restriction condition information, whether to transmit the flight path information to the network node.

[0079] In some embodiments, each of the one or more reporting conditions is assigned a priority level, and whether to transmit flight path information is determined further based on the priority level.

[0080] In some embodiments, the one or more reporting conditions comprise a first reporting condition and / or a second reporting condition, wherein the first reporting condition is allocated to a first priority level and the second reporting condition is allocated to a second priority level lower than the first priority level, and the method includes determining that the one or more limiting conditions are met, determining whether the first condition and / or the second condition are met, and if the first condition is met, transmitting flight path information towards the network node, but if the first condition is not met, not transmitting the flight path information towards the network node regardless of whether the second condition is met.

[0081] 3 shows a process 300 performed by the RAN node 104, the core network node 106, or any other network entity. The process 300 includes step s302. Step s302 includes transmitting reporting condition information to an unmanned aerial vehicle (UAV) 102, the reporting condition information indicating 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 includes a wireless communication device (WCD) capable of communicating with a network node.

[0082] In some embodiments, process 300 includes receiving flight path information, the flight path information transmitted by the UAV based at least on the one or more reporting conditions being met.

[0083] In some embodiments, process 300 includes receiving an indication message indicating that the flight path of the UAV has changed, the indication message being transmitted by the UAV based at least on the one or more reporting conditions not being met.

[0084] In some embodiments, the process 300 includes, after receiving the instruction message, sending a report request to the UAV to report flight path information, and receiving the flight path information based at least on sending the report request, wherein the flight path information was sent by the UAV.

[0085] In some embodiments, the reporting condition information indicates that said one or more reporting conditions are valid only for a certain time interval.

[0086] In some embodiments, the flight path information includes one or more parameters related to the flight path of the UAV, and the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed beyond one or more thresholds.

[0087] In some embodiments, the one or more reporting conditions for reporting flight path information is that the one or more parameters have changed by more than the one or more thresholds within one or more given time intervals.

[0088] In some embodiments, the 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.

[0089] In some embodiments, the flight path information is transmitted by the UAV further based on one or more additional reporting conditions being met, and the one or more additional reporting conditions include one or more of: a radio condition parameter changing beyond a threshold; the WCD detecting a K1 out-of-sync indication or a K2 in-sync indication; a radio link failure (RLF) timer starting; the WCD detecting a beam failure detection (BFD); the WCD switching its measurement mode; or the WCD detecting an equipment failure or malfunction in the UAV.

[0090] In some embodiments, the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).

[0091] In some embodiments, the measurement mode is one of a relaxed measurement mode or a reference measurement mode, where (i) the measurement period of the relaxed measurement mode is longer than the measurement period of the reference measurement mode, and (ii) in the relaxed measurement mode, measurements are not performed for neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed for one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number.

[0092] In some embodiments, the flight path information indicates that at least some of the data contained in the flight path information is valid only for a certain time interval.

[0093] In some embodiments, transmitting the reporting condition information includes transmitting a radio resource control (RRC) reconfiguration message and / or system information (SI), wherein the RRC reconfiguration message and / or the SI includes the reporting condition information.

[0094] In some embodiments, the process 300 includes transmitting, to the UAV, restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information, and whether to transmit the flight path information from the UAV is determined based on the restriction condition information.

[0095] In some embodiments, each of the one or more reporting conditions is assigned a priority level, and whether to transmit flight path information from the UAV is determined further based on the priority level.

[0096] In some embodiments, the one or more reporting conditions comprise a first reporting condition and / or a second reporting condition, wherein the first reporting condition is allocated to a first priority level and the second reporting condition is allocated to a second priority level lower than the first priority level, and wherein if (i) the one or more restrictive conditions are met and (ii) the first condition is met, flight path information is transmitted towards the network node, but if (i) the one or more restrictive conditions are met and (ii) the first condition is not met, flight path information is not transmitted towards the network node, regardless of whether the second condition is met.

[0097] 4 is a block diagram of a WCD included in a UAV 102, according to some embodiments. As shown in FIG. 4, the WCD may include 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), a field-programmable gate array (FPGA), etc.); communication circuitry 448, coupled to an antenna configuration 449 comprising one or more antennas, comprising a transmitter (Tx) 445 and a receiver (Rx) 447 for enabling the UE 102 to transmit and receive data (e.g., transmit / receive data wirelessly); and a local storage unit (a.k.a., a “data storage system”) 408, which may include one or more non-volatile storage devices and / or one or more volatile storage devices. In embodiments in which the PC 402 includes a programmable processor, a computer program product (CPP) 441 may be provided. The CPP 441 includes a computer-readable medium (CRM) 442, which stores a computer program (CP) 443 comprising computer-readable instructions (CRI) 444. The CRM 442 may be a non-transitory computer-readable medium, such as a magnetic medium (e.g., a hard disk), an optical medium, a memory device (e.g., a random access memory, a flash memory), or the like. In some embodiments, the CRI 444 of the computer program 443, when executed by the PC 402, is configured such that the CRI causes the UE 102 to perform steps described herein (e.g., steps described herein with reference to flowcharts). In other embodiments, the UE 102 may be configured to perform steps described herein without the need for code. That is, for example, the PC 402 may simply consist of one or more ASICs. Thus, features of the embodiments described herein may be implemented in hardware and / or software.

[0098] 5 is a block diagram of a network node 500 (e.g., RAN node 104) according to some embodiments. As shown in FIG. 5, the network node 500 includes a processing circuit (PC) 502 that 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 application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), etc.), which may be co-sited in a single housing or in a single data center, or may be geographically distributed (i.e., the network node 500 may be a distributed computing device); and at least one network interface 548 (e.g., a physical interface or air interface) that interfaces with the network node 500. The PC 502 may comprise at least one network interface 548, a transmitter (Tx) 545, and a receiver (Rx) 547 for enabling the network node 500 to transmit data to and receive data from other nodes connected to the network 110 (e.g., an Internet Protocol (IP) network) to which the network interface 548 is connected (physically or wirelessly) (e.g., the network interface 548 may be coupled to an antenna configuration comprising one or more antennas for enabling the network node 500 to transmit / receive data wirelessly), and a storage unit (a.k.a. a “data storage system”) 508, which may include one or more non-volatile storage devices and / or one or more volatile storage devices. In embodiments in which the PC 502 includes a programmable processor, a computer-readable storage medium (CRSM) 542 may be provided. The CRSM 542 may store a computer program (CP) 543 comprising computer-readable instructions (CRI) 544. The CRSM 542 may be a non-transitory computer-readable medium, such as a magnetic medium (e.g., a hard disk), an optical medium, a memory device (e.g., a random access memory, a flash memory), etc.In some embodiments, the CRI 544 of the computer program 543, when executed by the PC 502, is configured such that the CRI causes the network node 500 to perform the steps described herein (e.g., steps described herein with reference to flowcharts). In other embodiments, the network node 500 may be configured to perform the steps described herein without the need for code. That is, for example, the PC 502 may simply consist of one or more ASICs. Thus, features of the embodiments described herein may be implemented in hardware and / or software.

[0099] For the avoidance of doubt, the following numbered sentences provide additional information regarding the present disclosure: A1. A method (200) performed by an unmanned aerial vehicle (UAV) (102), wherein the UAV includes a wireless communication device (WCD), the method comprising: acquiring reporting condition information indicating one or more conditions for the UAV to report flight path information (s202); Including, Flight path information indicates the flight path of the UAV. Method (200). A2. determining whether one or more reporting conditions have been met; and transmitting flight path information toward a network node based at least on determining that the one or more reporting conditions are met; and The method according to sentence A1, comprising: A3. determining whether the one or more reporting conditions have been met; and transmitting, based at least on determining that the one or more reporting conditions are not met, an indication message toward the network node indicating that a flight path of the UAV has changed; and The method according to sentence A1, comprising: A4. receiving a report request for reporting flight path information after sending an instruction message toward the network node; transmitting the flight path information toward the network node based at least on receiving the report request; The method according to sentence A3, comprising: A5. The method of any one of sentences A1 to A4, wherein the reporting condition information indicates that the one or more reporting conditions are valid only for a certain time interval. A6. 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 flight path information are that the one or more parameters have changed beyond one or more thresholds; A method according to any one of sentences A1 to A5. A7. The method described in sentence A6, wherein the one or more reporting conditions for reporting flight path information are that the one or more parameters have changed beyond the one or more thresholds within one or more given time intervals. A8. The method of sentence A6 or A7, wherein the one or more parameters include one or more of the following: altitude of the UAV, speed of the UAV, remaining battery level of the UAV, remaining battery level of the WCD, or location of the UAV. A9. The flight path information is transmitted to the network node further based on whether one or more additional reporting conditions are met; The one or more additional reporting conditions are: that a radio condition parameter has changed beyond a threshold; The WCD detected a K1 out-of-sync or K2 in-sync indication, that the Radio Link Failure (RLF) timer has started; The WCD detected a Beam Failure Detection (BFD), The WCD has switched its measurement mode, or The WCD detects an equipment failure or malfunction in the UAV. including one or more of: A method as in sentences A2 and any one of A5 to A8 (when A5 to A8 are subordinate to A2). A10. The method according to sentence A9, wherein the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR). A11. the measurement mode is one of a relaxation measurement mode or a reference measurement mode; (i) the measurement period of the relaxed measurement mode is longer than the measurement period of the reference measurement mode; (ii) in the relaxed measurement mode, measurements are not performed on neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed on one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number; The method described in sentence A9 or A10. A12. The method of any one of sentences A1 to A11, wherein the flight path information indicates that at least some of the data contained in the flight path information is valid only for a certain time interval. A13. obtaining the reporting condition information includes receiving a radio resource control (RRC) reconfiguration message and / or system information (SI); The RRC reconfiguration message and / or the SI includes reporting condition information; an RRC reconfiguration message and / or SI has been sent by the network node; A method according to any one of statements A1 to A12. A14. acquiring limiting condition information indicating one or more limiting conditions for limiting the UAV from reporting flight path information; determining whether to transmit flight path information to the network node based on the restriction condition information; The method of any one of sentences A1 to A13, including: A15. each of the one or more reporting conditions is assigned a priority level; Whether to transmit flight path information is determined further based on the priority level; The method described in sentence A14. A16. the one or more reporting conditions comprise a first reporting condition and / or a second reporting condition; A first reporting condition is assigned to a first priority level; a second reporting condition is assigned a second priority level lower than the first priority level; The method is: determining that the one or more limiting conditions are met; and determining whether the first condition and / or the second condition is satisfied; and If a first condition is met, transmitting flight path information toward the network node; If the first condition is not met, no flight path information is sent to the network node, regardless of whether the second condition is met. Including, The method described in sentence A15. B1. A method (300) implemented by a network node (e.g., 104 or 106), the method comprising: transmitting, to an unmanned aerial vehicle (UAV) (102), reporting condition information indicating one or more reporting conditions for the UAV to report flight path information (s302); Including, Flight path information indicates the flight path of the UAV, the UAV comprises a wireless communication device (WCD) capable of communicating with a network node; Method (300). B2. Receiving flight route information Including, the flight path information is transmitted by the UAV based at least on the one or more reporting conditions being satisfied; The method described in sentence B1. B3. Receiving an instruction message indicating that the flight path of the UAV has changed Including, The indication message is transmitted by the UAV based at least on the one or more reporting conditions not being met. The method described in sentence B1. B4. After receiving the instruction message, sending a report request to the UAV to report flight path information; receiving flight path information based at least on transmitting the report request; Including, Flight path information was transmitted by the UAV, The method described in sentence B3. B5. The method of any one of sentences B1 to B4, wherein the reporting condition information indicates that the one or more reporting conditions are valid only for a certain time interval. B6. 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 flight path information are that the one or more parameters have changed beyond one or more thresholds; A method according to any one of sentences B1 to B5. B7. The method described in sentence B6, wherein the one or more reporting conditions for reporting flight path information are that the one or more parameters have changed beyond the one or more thresholds within one or more given time intervals. B8. The method of sentence B6 or B7, wherein the one or more parameters include one or more of the following: altitude of the UAV, speed of the UAV, remaining battery level of the UAV, or location of the UAV. B9. The flight path information was transmitted by the UAV further based on one or more additional reporting conditions being met; and The one or more additional reporting conditions are: that a radio condition parameter has changed beyond a threshold; The WCD detected a K1 out-of-sync or K2 in-sync indication, that the Radio Link Failure (RLF) timer has started; The WCD detected a Beam Failure Detection (BFD), The WCD has switched its measurement mode, or The WCD detects an equipment failure or malfunction in the UAV. including one or more of: A method as described in sentences B2 and any one of B5 to B8 (when B5 to B8 are subordinate to B2). B10. The method according to sentence B9, wherein the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR). B11. the measurement mode is one of a relaxation measurement mode or a reference measurement mode; (i) the measurement period of the relaxed measurement mode is longer than the measurement period of the reference measurement mode; (ii) in the relaxed measurement mode, measurements are not performed on neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed on one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number; The method described in sentence B9 or B10. B12. The method of any one of sentences B1 to B11, wherein the flight path information indicates that at least some of the data contained in the flight path information is valid only for a certain time interval. B13. transmitting the reporting condition information includes transmitting a radio resource control (RRC) reconfiguration message and / or system information (SI); The RRC reconfiguration message and / or SI includes reporting condition information; A method according to any one of statements B1 to B12. B14. Transmitting, to the UAV, restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting flight path information. Including, determining whether to transmit flight path information from the UAV based on the limiting condition information; A method according to any one of sentences B1 to B13. B15. each of the one or more reporting conditions is assigned a priority level; determining whether flight path information should be transmitted from the UAV further based on the priority level; The method described in sentence B14. B16. the one or more reporting conditions comprise a first reporting condition and / or a second reporting condition; A first reporting condition is assigned to a first priority level; a second reporting condition is assigned a second priority level lower than the first priority level; (i) the one or more limiting conditions are met, and (ii) if a first condition is met, flight path information is sent to the network node; (i) the one or more limiting conditions are met; and (ii) if the first condition is not met, the flight path information is not transmitted to the network node, regardless of whether the second condition is met. The method described in sentence B15. C1. A computer program (443 or 543) comprising instructions (444 or 544) that, when executed by a processing circuit (402 or 502) of a UAV or network node, causes the UAV or network node to perform a method described in any one of statements A1 to B16. C2. A carrier containing the computer program of sentence C1, wherein the carrier is one of an electronic signal, an optical signal, a radio signal, and a computer-readable storage medium (442 or 542). D1. An unmanned aerial vehicle (UAV) (102), the UAV including a wireless communication device (WCD), the UAV: acquiring reporting condition information indicating one or more conditions for the UAV to report flight path information (s202); It is set to do Flight path information indicates the flight path of the UAV. Unmanned Aerial Vehicles (UAVs) (102). D2. A UAV as described in sentence D1, wherein the UAV is configured to carry out a method as described in any one of sentences A2 to A16. E1. A network node (e.g., 104 or 106), wherein the network node: transmitting, to an unmanned aerial vehicle (UAV) (102), reporting condition information indicating one or more reporting conditions for the UAV to report flight path information (s302); It is set to do Flight path information indicates the flight path of the UAV, the UAV comprises a wireless communication device (WCD) capable of communicating with a network node; A network node (for example, 104 or 106). E2. A network node according to statement E1, wherein the network node is configured to implement a method according to any one of statements B2 to B16. F1. A device (200 or 300) a processing circuit (202 or 302); Memory (241 or 341) and and wherein the memory includes instructions executable by the processing circuitry, whereby the apparatus is operable to perform a method according to any one of A1 to B16.

[0100] While various embodiments have been described herein, it should be understood that these embodiments have been presented by way of example only, and not limitation. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments. Moreover, unless otherwise indicated herein or clearly contradicted by context, any combination of the above-described elements in all possible variations thereof is encompassed by the present disclosure.

[0101] As used herein, sending a message "to" or "toward" an intended recipient encompasses sending the message directly to the intended recipient or sending 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). Similarly, as used herein, receiving a message "from" a sender encompasses receiving the message directly from the sender or receiving the message indirectly from the sender (i.e., one or more nodes are used to relay the message from the sender to the receiving node). Additionally, as used herein, "a" means "at least one" or "one or more."

[0102] Additionally, while the processes described above and illustrated in the figures have been shown as a sequence of steps, this has been done for purposes of illustration only, and it is therefore contemplated that some steps may be added, some steps may be omitted, the order of steps may be rearranged, and some steps may be performed in parallel.

Claims

1. A method (200) performed by an unmanned aerial vehicle (UAV) (102), the UAV including a wireless communication device (WCD), the method comprising: obtaining reporting condition information indicating one or more conditions for the UAV to report flight path information (s202); Including, the flight path information indicates a flight path of the UAV and includes one or more parameters related to the flight path of the UAV, and one or more reporting conditions for reporting the flight path information is that the one or more parameters have changed by more than one or more thresholds within one or more given time intervals; Method (200).

2. The method of claim 1 , wherein the reporting condition information indicates that the one or more reporting conditions are valid only for a certain time interval.

3. The method of claim 1 or 2, wherein the one or more parameters include one or more of the altitude of the UAV, the speed of the UAV, the remaining battery level of the UAV, the remaining battery level of the WCD, or the location of the UAV.

4. determining whether the one or more reporting conditions have been met; and transmitting the flight path information toward a network node based at least on determining that the one or more reporting conditions are met; and 4. The method of claim 1, comprising:

5. determining whether the one or more reporting conditions have been met; and transmitting, based at least on determining that the one or more reporting conditions are not met, an indication message toward a network node indicating that the flight path of the UAV has changed; and 4. The method of claim 1, comprising:

6. receiving a report request for reporting the flight path information after sending the instruction message towards the network node; transmitting the flight path information toward the network node based at least on receiving the report request; and The method of claim 5 , comprising:

7. the flight path information is transmitted towards the network node further based on whether one or more additional reporting conditions are met; The one or more additional reporting conditions are: that a radio condition parameter has changed beyond a threshold, and optionally, the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR); the WCD detects a K1 out-of-sync indication or a K2 in-sync indication; that a radio link failure (RLF) timer has started; that the WCD detected a beam failure detection (BFD); The WCD has switched its measurement mode; or The WCD detects an equipment failure or malfunction in the UAV. [0033] The method of claim 4.

8. the measurement mode is one of a relaxation measurement mode or a reference measurement mode; (i) a measurement period in the relaxed measurement mode is longer than a measurement period in the reference measurement mode; (ii) in the relaxed measurement mode, measurements are not performed on neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed on one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number; The method of claim 7.

9. 9. The method of claim 1, wherein the flight path information indicates that at least some of the data contained therein is valid only for a certain time interval.

10. obtaining the reporting condition information includes receiving a radio resource control (RRC) reconfiguration message and / or system information (SI); the RRC reconfiguration message and / or the SI includes the reporting condition information; the RRC reconfiguration message and / or the SI was sent by a network node; 10. The method according to any one of claims 1 to 9.

11. obtaining limiting condition information indicating one or more limiting conditions for limiting the UAV from reporting the flight path information; determining whether to transmit the flight path information to a network node based on the restriction condition information; 11. The method of claim 1, comprising:

12. each of the one or more reporting conditions is assigned a priority level; determining whether to transmit the flight path information further based on the priority level; The method of claim 11.

13. the one or more reporting conditions comprise 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 a second priority level lower than the first priority level; The method comprises: determining that the one or more limiting conditions are met; and determining whether the first condition and / or the second condition is satisfied; and transmitting the flight path information towards the network node if the first condition is met; If the first condition is not met, then not transmitting the flight path information towards the network node, regardless of whether the second condition is met. Including, The method of claim 12.

14. A method (300) implemented by a network node (e.g., 104 or 106), the method comprising: transmitting reporting condition information to an unmanned aerial vehicle (UAV) (102) indicating one or more reporting conditions for the UAV to report flight path information (s302); Including, the flight path information indicates a flight path of the UAV and includes one or more parameters related to the flight path of the UAV, and the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed by more than one or more thresholds within one or more given time intervals; the UAV comprises a wireless communication device (WCD) capable of communicating with the network node; Method (300).

15. The method of claim 14 , wherein the reporting condition information indicates that the one or more reporting conditions are valid only for a certain time interval.

16. 16. The method of claim 14 or 15, wherein the 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.

17. receiving said flight path information; Including, the flight path information is transmitted by the UAV based at least on the one or more reporting conditions being met; 17. The method of any one of claims 14 to 16.

18. receiving an indication message indicating that the flight path of the UAV has changed; Including, the instruction message is transmitted by the UAV based at least on the one or more reporting conditions not being met; 17. The method of any one of claims 14 to 16.

19. After receiving the instruction message, sending a report request to the UAV to report the flight path information; receiving the flight path information based at least on transmitting the report request; and Including, the flight path information was transmitted by the UAV; 20. The method of claim 18.

20. the flight path information was transmitted by the UAV further based on one or more additional reporting conditions being met; and The one or more additional reporting conditions are: that a radio condition parameter has changed beyond a threshold, and optionally, the radio condition parameter is a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR); the WCD detects a K1 out-of-sync indication or a K2 in-sync indication; that a radio link failure (RLF) timer has started; that the WCD detected a beam failure detection (BFD); The WCD has switched its measurement mode; or The WCD detects an equipment failure or malfunction in the UAV. [0033] 18. The method of claim 17.

21. the measurement mode is one of a relaxation measurement mode or a reference measurement mode; (i) a measurement period in the relaxed measurement mode is longer than a measurement period in the reference measurement mode; (ii) in the relaxed measurement mode, measurements are not performed on neighboring cells and / or measurements are performed on a first number of carriers, and in the reference measurement mode, measurements are performed on one or more neighboring cells and / or measurements are performed on a second number of carriers, the first number being smaller than the second number; 21. The method of claim 20.

22. 22. A method according to any one of claims 14 to 21, wherein the flight path information indicates that at least some of the data contained therein is valid only for a certain time interval.

23. transmitting the reporting condition information includes transmitting a radio resource control (RRC) reconfiguration message and / or system information (SI); The RRC reconfiguration message and / or the SI includes the reporting condition information.

23. The method of any one of claims 14 to 22.

24. transmitting, to the UAV, restriction condition information indicating one or more restriction conditions for restricting the UAV from reporting the flight path information; Including, determining whether to transmit the flight path information from the UAV based on the restriction condition information; 24. The method of any one of claims 14 to 23.

25. each of the one or more reporting conditions is assigned a priority level; determining whether to transmit the flight path information from the UAV further based on the priority level; 25. The method of claim 24.

26. the one or more reporting conditions comprise 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 a second priority level lower than the first priority level; (i) if the one or more restriction conditions are satisfied, and (ii) if the first condition is satisfied, the flight path information is transmitted to the network node; (i) if the one or more restriction conditions are met, and (ii) if the first condition is not met, the flight path information is not transmitted to the network node, regardless of whether the second condition is met.

26. The method of claim 25.

27. A computer program (443 or 543) comprising instructions (444) which, when executed by a processing circuit (402) of a UAV, cause the UAV to perform the method of any one of claims 1 to 13, or instructions (544) which, when executed by a processing circuit (502) of a network node, cause the network node to perform the method of any one of claims 14 to 26.

28. An unmanned aerial vehicle (UAV) (102), the UAV including a wireless communication device (WCD), the UAV comprising: obtaining reporting condition information indicating one or more conditions for the UAV to report flight path information (s202); It is set to do the flight path information indicates a flight path of the UAV and includes one or more parameters related to the flight path of the UAV, and one or more reporting conditions for reporting the flight path information is that the one or more parameters have changed by more than one or more thresholds within one or more given time intervals; Unmanned aerial vehicles (UAVs) (102).

29. 29. The UAV of claim 28, wherein the UAV is configured to carry out a method according to any one of claims 2 to 13.

30. a network node (e.g., 104 or 106), said network node comprising: transmitting reporting condition information to an unmanned aerial vehicle (UAV) (102) indicating one or more reporting conditions for the UAV to report flight path information (s302); It is set to do the flight path information indicates a flight path of the UAV and includes one or more parameters related to the flight path of the UAV, and the one or more reporting conditions for reporting the flight path information are that the one or more parameters have changed by more than one or more thresholds within one or more given time intervals; the UAV comprises a wireless communication device (WCD) capable of communicating with the network node; A network node (e.g., 104 or 106).

31. 31. A network node according to claim 30, wherein the network node is configured to perform a method according to any one of claims 15 to 26.

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