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WO2025065623A1 - Procédé de communication pour uav - Google Patents

Procédé de communication pour uav Download PDF

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Publication number
WO2025065623A1
WO2025065623A1 PCT/CN2023/122909 CN2023122909W WO2025065623A1 WO 2025065623 A1 WO2025065623 A1 WO 2025065623A1 CN 2023122909 W CN2023122909 W CN 2023122909W WO 2025065623 A1 WO2025065623 A1 WO 2025065623A1
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WO
WIPO (PCT)
Prior art keywords
height
threshold
height threshold
measurement report
measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/122909
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English (en)
Inventor
Jianxun Ai
Mengjie ZHANG
Jing Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to PCT/CN2023/122909 priority Critical patent/WO2025065623A1/fr
Publication of WO2025065623A1 publication Critical patent/WO2025065623A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/20—Arrangements for acquiring, generating, sharing or displaying traffic information
    • G08G5/21—Arrangements for acquiring, generating, sharing or displaying traffic information located onboard the aircraft
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/20—Arrangements for acquiring, generating, sharing or displaying traffic information
    • G08G5/22—Arrangements for acquiring, generating, sharing or displaying traffic information located on the ground
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/20—Arrangements for acquiring, generating, sharing or displaying traffic information
    • G08G5/26—Transmission of traffic-related information between aircraft and ground stations
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/30—Flight plan management
    • G08G5/32—Flight plan management for flight plan preparation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/50—Navigation or guidance aids
    • G08G5/55—Navigation or guidance aids for a single aircraft
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft
    • G08G5/50—Navigation or guidance aids
    • G08G5/57—Navigation or guidance aids for unmanned aircraft
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Definitions

  • the present subject matter is directed generally to wireless communications. Particularly, the present subject matter relates to methods, devices, and systems for improving resource utilization and reducing interference during wireless communication of an unmanned aerial vehicle (UAV) user equipment (UE) .
  • UAV unmanned aerial vehicle
  • UE user equipment
  • Radio Resource Management (RRM) measurement may be performed in Radio Resource Control (RRC) CONNECTED mode for serving cell and neighbor cell measurement, in RRC IDLE and RRC INACTIVE modes for idle measurement, and in RRC IDLE and RRC INACTIVE mode for cell selection and reselection.
  • RRC Radio Resource Control
  • the RRM measurement may be performed on the reference signaling (e.g., synchronization signal block (SSB) or Channel State Information Reference Signal (CSI-RS) ) .
  • the network may configure the RRM measurement via system information (SI) or a dedicated RRC message.
  • SI system information
  • the typical RRM measurement configuration may comprise frequency, SSB to measure, the number of reference signals used to derive radio quality of the cell, and SSB measurement timing configuration (SMTC) ; i.e., the UE may perform SSB measurement within the configured SMTC.
  • SMTC SSB measurement timing configuration
  • the present subject matter is directed to a method, device, and system for improving wireless communication procedures and signaling between a UAV UE and a base station.
  • a method for providing a flight path of an aerial user equipment (UE) to a base station includes transmitting a first RRC message to the base station indicating the flight path is available; receiving a second RRC message from the base station requesting the flight path; and transmitting a third RRC message to the base station reporting the flight path, wherein the flight path comprises a plurality of waypoints, and each waypoint comprises a location of the UE.
  • UE aerial user equipment
  • a method for triggering transmission of a first or second measurement report from an aerial user equipment (UE) to a base station includes receiving a first and second measurement identifier (ID) from the base station, wherein each of the first and second measurement IDs are associated with a same measurement object and a respective first and second measurement report configuration, and the measurement report configuration specifies a signal quality condition and height condition for triggering transmission of the first or the second measurement report to the base station; and determining one or more of: whether the measurement report configuration associated with the first measurement ID should be applied, whether the first measurement report associated with the first measurement ID should be triggered and transmitted to the base station, or whether a measurement reporting entry for the first measurement ID should be included within a list.
  • ID measurement identifier
  • a method for triggering transmission of a first or second measurement report from an aerial user equipment (UE) to a base station includes receiving a first and second measurement identifier (ID) from the base station, wherein each of the first and second measurement IDs are associated with a same measurement object and a respective first and second measurement report configuration, and the measurement report configuration specifies a signal quality condition and height condition for triggering transmission of the first or the second measurement report to the base station; and transmitting the second measurement report to the base station, wherein the second measurement report comprises a current height of the UE.
  • ID measurement identifier
  • a method for providing a flight path of an aerial user equipment (UE) to a base station comprising: receiving a first RRC message from the UE indicating the flight path is available; transmitting a second RRC message to the UE requesting the flight path; and receiving a third RRC message from the UE reporting the flight path, wherein the flight path comprises a plurality of waypoints, and each waypoint comprises a location of the UE.
  • UE aerial user equipment
  • a user device may be or include, but not limited to, a mobile device (such as a mobile phone, a smart phone, a smart watch, a tablet, a laptop computer, vehicle or other vessel (human, motor, or engine-powered, such as an automobile, a plane, a train, a ship, or a bicycle as non-limiting examples) or a fixed or stationary device, (such as a desktop computer or other computing device that is not ordinarily moved for long periods of time, such as appliances, other relatively heavy devices including Internet of things (IoT) , or computing devices used in commercial or industrial environments, as non-limiting examples) .
  • a mobile device such as a mobile phone, a smart phone, a smart watch, a tablet, a laptop computer, vehicle or other vessel (human, motor, or engine-powered, such as an automobile, a plane, a train, a ship, or a bicycle as non-limiting examples) or a fixed or stationary device, (such as a desktop computer or other computing device that is not ordinarily moved
  • the base station 200 may also include system circuitry 204.
  • System circuitry 204 may include processor (s) 221 and/or memory 222.
  • Memory 222 may include an operating system 224, instructions 226, and parameters 228.
  • Instructions 226 may be configured for the one or more of the processors 124 to perform the functions of the base station.
  • the parameters 228 may include parameters to support execution of the instructions 226. For example, parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and/or other parameters.
  • the system circuitry 304 may be implemented, for example, with one or more systems on a chip (SoC) , application specific integrated circuits (ASIC) , discrete analog and digital circuits, and other circuitry.
  • SoC systems on a chip
  • ASIC application specific integrated circuits
  • the system circuitry 304 may be a part of the implementation of any desired functionality in the UE 300.
  • the system circuitry 304 may include logic that facilitates, as examples, decoding and playing music and video, e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user inputs; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections for, as one example, internet connectivity; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310.
  • the user interface 310 and the inputs/output (I/O) interfaces 306 may include a graphical user interface, touch sensitive display, haptic feedback or other haptic output, voice or facial recognition inputs, buttons, switches, speakers, and other user interface elements.
  • I/O interfaces 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headset and microphone input /output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors) , and other types of inputs.
  • USB Universal Serial Bus
  • the communication interfaces 302 may include a Radio Frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 which handles transmission and reception of signals through one or more antennas 314.
  • the communication interface 302 may include one or more transceivers.
  • the transceivers may be wireless transceivers that include modulation /demodulation circuitry, digital to analog converters (DACs) , shaping tables, analog to digital converters (ADCs) , filters, waveform shapers, filters, pre-amplifiers, power amplifiers and/or other logic for transmitting and receiving through one or more antennas, or (for some devices) through a physical (e.g., wireline) medium.
  • the system circuitry 304 may include one or more processors 321 and memories 322.
  • the memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328.
  • the processor 321 is configured to execute the instructions 326 to carry out desired functionality for the UE 300.
  • the parameters 328 may provide and specify configuration and operating options for the instructions 326.
  • the memory 322 may also store any BT, WiFi, 3G, 4G, 5G or other data that the UE 300 will send, or has received, through the communication interfaces 302.
  • a system power for the UE 300 may be supplied by a power storage device, such as a battery or a transformer.
  • a communication 400 is illustrated between the UAV UE 300 and the base station (gNB) 200.
  • a UAV UE 300 may generate or otherwise obtain an initial or updated flight path 401.
  • An indication that this flight path 401 is available may be sent to the network 200 via a first RRC message in step S405.
  • the first RRC message may be, for example, an RRC setup complete message, an RRC reconfiguration complete message, an RRC resume complete message, or a UEAssistanceInformation message.
  • the network 200 may subsequently request the flight path information by sending a second RRC message in S410.
  • the second RRC message may be a UEInformationRequest message.
  • the UAV UE 300 may respond to the second RRC message by sending a third RRC message that includes the flight path 401 in S415.
  • the third RRC message may be a UEInformationResponse message.
  • the UAV UE 300 will send a flight path availability indication to the network 200 using a first RRC message in any of the following cases: (1) when the UAV UE 300 has an initial flight path 401, the UAV UE 300 triggers a flight path indication procedure by including an indicator to indicate that the flight path 401 is available; and (2) if the UAV UE 300 has an updated flight path, the UAV UE 300 triggers a flight path update indication procedure by including an indicator to indicate that the updated flight path 401 is available.
  • the network 200 configures a delta time threshold and/or a delta distance threshold. If the location of a waypoint is changed by more than the configured delta distance threshold, the UAV UE 300 triggers the flight path update indication. If the timestamp of the waypoint is changed by more than the configured delta time threshold, the UAV UE 300 triggers the flight path update indication procedure.
  • the UAV UE 300 when the UAV UE 300 passes a waypoint of a reported flight path, the UAV UE 300 regards the passed waypoint as outdated and remove it from the flight path 401 stored within the UAV UE 300.
  • the UAV UE 300 then triggers a flight path update notification procedure by sending the first RRC message to the network 200.
  • the first RRC message indicates that the flight path 401 has been updated or otherwise that an updated flight path 401 is available to the network 200.
  • the network 200 cannot distinguish between the reasons that the flight path update notification is triggered and requests the updated flight path 401 by sending the second RRC message to the UAV UE 300.
  • flight path 401 is updated only because the UAV UE 300 passes a waypoint, this update may be useless for the network 200, especially when the passed waypoint includes a timestamp. Unnecessarily updating the flight path 401 and the associated acquisition procedure wastes radio resources and creates unnecessary interference both to the aerial UEs flying in the air as well as to other base stations 200 on the ground.
  • a waypoint may be considered outdated if the UAV UE 300 has flown past the waypoint or if the associated timestamp of the waypoint has elapsed.
  • the flight path update notification procedure in accordance with the present subject matter may include sending a first RRC message to the network 200 to indicate that a flight path 401 is available or an update to the flight path 401 is available.
  • the network 200 may be configured to allow or not allow triggering of the flight path update/availability notification for an outdated waypoint. Triggering of the flight path update/availability notification may be allowed or not allowed for one or more of the following reasons: (1) one or more waypoints are outdated, (2) one or more waypoints that include a timestamp are outdated, or (3) one or more waypoints that do not include a timestamp are outdated.
  • the network 200 may configure whether triggering of the flight path update/availability notification is allowed or not allowed by including a first indicator in a system information (SI) of a serving cell or in an RRC message sent from the network 200 to the UAV UE 300.
  • SI system information
  • the absence of the first indicator may mean that the triggering of the flight path update/availability notification, based on the aforementioned reasons, is allowed or not.
  • the UAV UE 300 may determine whether to initiate the flight path update/availability notification procedure based on the presence of the first indicator or a value of the first indicator.
  • the network 200 may configure whether the flight path update/availability notification may be triggered because one or more waypoints are outdated. This technique may provide flexibility for the network 200 in that the network 200 may determine whether the flight path update/availability notification is allowed according to its own implementation.
  • the UAV UE 300 may indicate the reason (s) for updating the flight path 401 to the network 200.
  • the network 200 may then determine whether to request the updated flight path 401 based on the indicated reason (s) , which may provide an opportunity for the network 200 to avoid requesting the updated flight path if it would not be useful to the network 200.
  • a rule may be defined that specifies the flight path update/availability notification procedure is prohibited because one or more waypoints that include a timestamp are outdated.
  • the network 200 may indicate that the flight path update/availability notification is allowed because one or more waypoints that do not include a timestamp are outdated.
  • the UAV UE 300 may trigger the flight path update/availability notification by sending a first RRC message to the network 200.
  • the first RRC message may include an indicator to indicate that the flight path update/availability notification is triggered because waypoints that do not include a timestamp are outdated.
  • the network 200 may determine whether to request the updated flight path 401 based on the indicator included within the first RRC message from the UAV UE 300. Using these techniques, radio resources may be more efficiently utilized while reducing radio interference during the acquisition of the updated flight path 401 by the network 200.
  • FIG. 6 illustrates a general overview 600of the steps associated with configuring and transmitting a measurement report.
  • a plurality of measurement IDs may be provided from the network 200 to the UAV UE 300 in S601.
  • the UAV UE 300 may determine whether transmission of the measurement report to the network 200 has been triggered based on satisfying predetermined criteria in S602.
  • the UAV UE 300 may transmit the measurement report based on the determination to the network 200.
  • a UE 300 in RRC_CONNECTED state may be configured with a list of measurement IDs (measID) .
  • measID is associated with a measurement object and a measurement report configuration.
  • the measurement object configuration includes the information for SSB intra/inter-frequency measurement and/or CSI-RS intra/inter-frequency measurements.
  • the measurement report configuration specifies criteria for triggering a measurement reporting event. Measurement reporting events are based on cell measurement results, which may either be derived based on SS/PBCH block or CSI-RS.
  • a measurement report configuration may be configured as event-triggered or periodic.
  • the measurement report configuration when event-triggered, is configured with an event type.
  • event type when event-triggered, is configured with an event type.
  • Event A3 Neighbor improves in radio signal quality by amount of offset better than the PCell/PSCell.
  • Event A4 Neighbor improves in radio signal quality better than absolute threshold.
  • Event A5 The PCell/PSCell declines in radio signal quality worse than absolute threshold1 and the neighbor/SCell improves in radio signal quality better than another absolute threshold2.
  • Event H1 The aerial UE height is higher than an absolute threshold.
  • Event H2 The aerial UE height is lower than an absolute threshold.
  • Each event (e.g., events A3-A5, H1, H2) is configured with an entering condition and a leaving condition. If a measurement report configuration is event-triggered for a measID, and the entering condition of the associated event is fulfilled for one or more applicable cells for all measurements during a predefined timer (i.e., time to trigger (TTT) ) configured for the event, the event may be triggered; i.e., the UE 300 starts to perform measurement reporting for this measID.
  • the entering condition of event A4 is a neighbor cell improving in signal quality better than an absolute threshold.
  • the entering condition of event H1 is the UE’s height is higher than an absolute threshold.
  • the new event types include a legacy event A3, A4, or A5 threshold, and one of event H1 or event H2 thresholds.
  • a single TTT for the event is also introduced.
  • the newly introduced measurement report event types are defined as:
  • Event A3H1 Neighbor cell improves in radio signal quality by amount of offset better than SpCell and the aerial UE height is above a threshold.
  • Event A3H2 Neighbor cell improves in radio signal quality by amount of offset better than SpCell and the aerial UE height is below a threshold.
  • Event A4H1 Neighbor cell improves in radio signal quality better than threshold1 and the aerial UE height is above a threshold2.
  • Event A4H2 Neighbor cell improves in radio signal quality better than threshold1 and the aerial UE height is below a threshold2.
  • Event A5H1 SpCell declines in radio signal quality worse than threshold1 and neighbor cell becomes better than threshold2 and the aerial UE height is above a threshold3.
  • Event A5H2 SpCell declines in radio signal quality worse than threshold1 and neighbor cell improves in radio signal quality better than threshold2 and the aerial UE height is below a threshold3.
  • the following code shows how a new event type eventA4H1 is defined.
  • an event A4 threshold (a4-Threshold-r18) and an event H1 thresohld (h1-Threshold-r18) is included.
  • the entering condition of eventA4H1 is where the neighbor cell improves in signal quality better than threshold-1, which is based on the configured event A4 threshold (a4-Threshold-r18) , and at the same time, the UE’s height is higher than threshold-2, which is associated with the configured event H1 threshold (h1-Threshold-r18) .
  • the purpose of this kind of new event type is to implement a height-dependent measurement report configuration.
  • the network configures different report configurations for different aerial UE heights.
  • the legacy Ax event threshold is associated with a height-based threshold. This is beneficial for the UAV UE use case where the radio environment varies greatly according to the height (i.e., altitude) .
  • MR-1 and MR-2 are of the event-triggered type and configured with event type eventA4H1.
  • MR-1 is configured with event-1 with A4-threshold-1 and H1-threshold-1.
  • MR-2 is configured with event-2 with A4-threshold-2 and H1-threshold-2.
  • FIG. 5 illustrates the UAV UE 300 disposed at a height position (i.e., altitude) 501 with respect to H1-threshold-2 505 and H1-threshold-1 510, where H1-threshold-2 505 is larger than H1-threshold-1 510. Therefore, when the UAV UE 300 flies above a height 501 that fulfills the entering condition of both H1-threshold-1 510 and H1-threshold-2 505, one of the following cases may occur:
  • the UAV UE 300 will trigger a measurement report for both measID-1 and measID-2.
  • the UAV UE 300 will transmit an RRC message to report the measurement results for measID associated with the measurement event.
  • the UAV UE 300 may transmit two RRC messages for measID-1 and measID-2, respectively.
  • This is problematic first because it is unnecessary to transmit the measurement report for measID-1 in this situation.
  • This also problematic because when the measurement report for measID-1 is received by the network 200, the network 200 will respond accordingly based on the measurement report. However, this may be incorrect behavior since the network 200 also configures another measID (i.e., measID-2) that is applied when the UAV UE 300 is flying above H1-threshold-2 505.
  • each of the first and second measurement IDs are associated with a same measurement object and a respective first and second measurement report configuration, and the measurement report configuration specifies a signal quality condition and height condition for triggering transmission of the first or the second measurement report to the base station.
  • the UAV UE 300 may make a first determination based on one or more of the following conditions: (1) the relationship between the first H1 threshold and the second H1 threshold; (2) whether the entering condition for the second event is fulfilled or applicable; and/or (3) the UAV UE’s 300 height.
  • the UAV UE 300 may make the first determination based on one or more of the following conditions: (1) the relationship between the first H2 threshold and the second H2 threshold; (2) whether the entry condition for the second event is fulfilled or applicable; and/or (3) the UAV UE’s 300 height.
  • the first determination may be that one or more of the following is allowed: (1) the configuration associated with the first measID may be applied; (2) the measurement report for the first measID may be transmitted; (3) the first event may be triggered; and/or (4) a measurement reporting entry may be included within the VarMeasReportList for the first measID when the entering condition is applicable for the first event.
  • the UAV UE’s 300 height is higher than a value based on the second H1 threshold
  • the UAV UE’s 300 height is larger than a value based on the first H1 threshold and smaller than a value based on the second H1 threshold, or
  • the UAV UE’s 300 height is lower than a value based on the second H2 threshold
  • the UAV UE’s 300 height is smaller than a value based on the first H2 threshold and larger than a value based on the second H2 threshold
  • the UE determines one or more of the following is allowed: (1) the configuration associated with the first measID may be applied; (2) the measurement report for the first measID may be transmitted to the network 200; (3) the first event may be triggered; (4) a measurement reporting entry may be included within the VarMeasReportList for the first measID when the entering condition is applicable for the first event.
  • the first H1 threshold is smaller than the second H1 threshold
  • the first H1 threshold is smaller than the second H1 threshold, and the entering condition of the second event is fulfilled or applicable;
  • the first H1 threshold is smaller than the second H1 threshold, and the UAV UE’s 300 height is higher than a value based on the second H1 threshold;
  • the first H1 threshold is smaller than the second H1 threshold, and the UAV UE’s 300 height is higher than a value based on the second H1 threshold, and the entering condition of the second event is fulfilled or applicable;
  • the first H2 threshold is larger than the second H2 threshold, and the entering condition of the second event is fulfilled or applicable;
  • the first H2 threshold is larger than the second H2 threshold, and the UAV UE’s 300 height is below a value based on the second H2 threshold;
  • the UAV UE 300 determines one or more of the following: (1) the configuration associated with the first measID may not be applied; (2) the measurement report for the first measID may not be transmitted to the network 200; (3) the first event may not be triggered; (4) a measurement reporting entry may not be included within the VarMeasReportList for the first measID when the entering condition is applicable for the first event.
  • the UAV UE 300 may always include height information 501 in the measurement report message for the event that is configured with both an Ax threshold and an H1/H2 threshold.
  • the UAV UE 300 is configured with a first measID: (1) the first measID may be associated with a first report configuration; (2) the first report configuration is set to event triggered; (3) the first event is configured with an Ax threshold and an H1 or H2 threshold; and (4) the Ax threshold may be an A3, A4, or A5 threshold.
  • the UAV UE 300 may include the height information 501 (i.e., in S603) .
  • the height information is always included in the measurement results for the first measID regardless whether the network 200 configures the UAV UE 300 to include the height information in the measurement report message.
  • the height information is the current height (i.e., altitude) of the UAV UE 300, or the height where the first event is triggered.
  • the network 200 may always know the height of the UAV UE 300 and can make the correct response based on the height 501 and the H1/H2 threshold (s) associated with the reported measID and other measIDs. For instance, if the current UAV UE 300 height is larger than the H1 threshold associated with the reported measID and another H1 threshold is configured for another measurement event, the network 200 may determine that the measurement report is not necessary.
  • H1/H2 threshold s
  • the subject matter of the disclosure may also relate to or include, among others, the following aspects:
  • a first aspect includes a method for providing a flight path of an aerial user equipment (UE) to a base station, comprising: transmitting a first RRC message to the base station indicating the flight path is available; receiving a second RRC message from the base station requesting the flight path; and transmitting a third RRC message to the base station reporting the flight path, wherein the flight path comprises a plurality of waypoints, and each waypoint comprises a location of the UE.
  • UE aerial user equipment
  • a second aspect includes the method of the first aspect further comprising: determining one or more waypoint (s) are outdated; and based on a rule, determining whether to notify the base station that the flight path is available.
  • a fourth aspect includes the method of any preceding aspect, further comprising: determining one or more waypoint (s) are outdated; and notifying the base station that the flight path has been updated due to an outdated waypoint.
  • a fifth aspect includes the method of any preceding aspect, wherein the notifying occurs via an indicator in the first RRC message.
  • a seventh aspect includes a method for triggering transmission of a first or second measurement report from an aerial user equipment (UE) to a base station, comprising: receiving a first and second measurement identifier (ID) from the base station, wherein each of the first and second measurement IDs are associated with a same measurement object and a respective first and second measurement report configuration, and the measurement report configuration specifies a signal quality condition and height condition for triggering transmission of the first or the second measurement report to the base station; and determining one or more of: whether the measurement report configuration associated with the first measurement ID should be applied, whether the first measurement report associated with the first measurement ID should be triggered and transmitted to the base station, or whether a measurement reporting entry for the first measurement ID should be included within a list.
  • ID measurement identifier
  • An eighth aspect includes the method of aspect 7, wherein the height condition of the first measurement report configuration is configured with a first height threshold; the height condition of the second measurement report configuration is configured with a second height threshold; and the determining further comprises one or more of: determining a relationship between the first height threshold and the second height threshold, determining whether the signal quality condition and the height condition of the second measurement report configuration is met, or determining a current height of the UE.
  • a ninth aspect includes the method of aspects 7 or 8, wherein the height condition of the first measurement report configuration is configured with a third height threshold; the height condition of the second measurement report configuration is configured with a fourth height threshold; and the determining further comprises: determining a relationship between the third height threshold and the fourth height threshold, determining whether the signal quality condition and the height condition of the second measurement report configuration is met, or determining a current height of the UE.
  • a tenth aspect includes the method of aspects 7-9, wherein if the first height threshold is larger than the second height threshold, and the current height of the UE is higher than a value based on the second height threshold, or if the first height threshold is smaller than the second height threshold, and the signal quality and height conditions of second measurement report configuration are not fulfilled, or if the first height threshold is smaller than the second height threshold, and the current height of the UE is higher than a value based on the first height threshold and below than a value based on the second height threshold, or if the third height threshold is smaller than the fourth height threshold, and the current height of the UE is lower than a value based on the fourth height threshold, or if the third height threshold is larger than the fourth height threshold, and signal quality and height conditions of the second measurement report configuration is not fulfilled, or if the third height threshold is larger than the fourth height threshold, and the current height of the UE is lower than a value based on the third height threshold and higher than a value based on the fourth height threshold then one or more of
  • An eleventh aspect includes the method of aspects 7-10, wherein if the first height threshold is smaller than the second height threshold, or if the first height threshold is smaller than the second height threshold, and the signal quality and height conditions of second measurement report configuration are fulfilled, or if the first height threshold is smaller than the second height threshold and the current height of the UE is higher than a value based on the second height threshold, if the first height threshold is smaller than the second height threshold and the current height of the UE is higher than a value based on the second height threshold and the signal quality and height conditions of the second measurement report configuration are fulfilled, or the third height threshold is larger than the fourth height threshold, or the third height threshold is larger than the fourth height threshold and the signal quality and height conditions of the second measurement report configuration are fulfilled, or the third height threshold is larger than the fourth height threshold and the current height of the UE is less than a value based on the fourth height threshold, or the third height threshold is larger than the fourth height threshold and the signal quality and height conditions of the second measurement report configuration are fulfilled and the current height of the UE
  • a twelfth aspect includes the method of aspects 7-11, wherein the first or the second measurement report is transmitted in an RRC message.
  • a thirteenth aspect includes a method for triggering transmission of a first or second measurement report from an aerial user equipment (UE) to a base station, comprising: receiving a first and second measurement identifier (ID) from the base station, wherein each of the first and second measurement IDs are associated with a same measurement object and a respective first and second measurement report configuration, and the measurement report configuration specifies a signal quality condition and height condition for triggering transmission of the first or the second measurement report to the base station; and transmitting the second measurement report to the base station, wherein the second measurement report comprises a current height of the UE.
  • ID measurement identifier
  • a sixteenth aspect includes the method of aspect 15, further comprising: transmitting an indicator to the UE that configures whether flight path update notification is allowed based on one or more waypoint (s) are outdated.
  • a seventeenth aspect includes the method of aspects 15 or 16, further comprising: receiving a notification from the UE that the flight path has been updated due to an outdated waypoint; and determining whether to request the updated flight path based on the notification.
  • An eighteenth aspect includes a device for wireless communication comprising: a processor; and a memory in communication with the processor, the memory storing a plurality of instructions executable by the processor to cause the device to: implement the method of any preceding aspect.
  • a nineteenth aspect includes a non-transitory computer-readable medium comprising instructions operable, when executed by one or more processors, to: implement the method of any preceding aspect.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne des techniques pour fournir une trajectoire de vol d'un équipement utilisateur (UE) aérien à une station de base. Un premier message RRC est transmis à la station de base indiquant que la trajectoire de vol est disponible. Un deuxième message RRC est reçu de la station de base demandant la trajectoire de vol. Un troisième message RRC est transmis à la station de base rapportant la trajectoire de vol. La trajectoire de vol comprend une pluralité de points de cheminement. Chaque point de cheminement comprend un emplacement de l'UE.
PCT/CN2023/122909 2023-09-28 2023-09-28 Procédé de communication pour uav Pending WO2025065623A1 (fr)

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