Enhancing mobility and service continuity based on beam pattern information

Abstract

Disclosed are methods for determining when coverage of Earth Mobile Non-Terrestrial Network (NTN) cells (including aerial platforms) used in rural and remote areas will be lost (e.g., which affects use cases in agriculture, building, mining, logistics, transportation, utility); and implementing predicted mobility of the air platform or vehicle-mounted relay to achieve service continuity when providing services via the earth mobile non-terrestrial network cell (or air platform) (thereby causing frequent connection transfer). The method provides service continuity in a wireless device based on beam pattern information, the wireless device being connected to a wireless network node, receiving configuration messages from a mobile node, in response to receiving the configuration messages, evaluating measurement trigger criteria from specific data including beam pattern, node type, reference location, trajectory and velocity data. In response to the evaluation of the measurement trigger criteria passing verification, measurements are performed from the particular data, interference is determined from the particular data, and a measurement report is transmitted. In response to the evaluation of the measurement trigger criteria not passing verification, the measurement report is not transmitted.

Description

Technical Field

[0001] The present disclosure relates to wireless networks, and more particularly, to methods and apparatus for enhancing mobility and service continuity in user equipment based on beam pattern / mode information. Background Art

[0002] Terrestrial networks may provide poor or limited coverage in rural and remote areas (e.g., affecting use cases in agriculture, construction, mining, logistics, transportation, and utilities). To overcome this challenge, 3GPP 5G discussed NR massive MIMO (see Figure 2 , Source: RWS-180008, «NR Physical Layer Design: NR MIMO», Younsun Kim, Samsung), and the Integrated Access and Backhaul (IAB) reference architecture, as described in 3GPP TS 23.501 Release 18 (by Figure 3 The architecture, disclosed in a demonstration, is considered a benchmark for aerial devices / unmanned aerial vehicles (UAVs) and vehicle-mounted relays.

[0003] The subject of service continuity has also been discussed in the patent literature.

[0004] WO 2022139216 relates to cell reselection in wireless communications. The application discloses a method performed by a wireless device in a wireless communication system, comprising: receiving information related to a service time of a neighboring cell; obtaining a cell quality of the neighboring cell based on a measurement result of the neighboring cell; determining a remaining service time of the neighboring cell as a period from a current time point to an end time point of the service time of the neighboring cell; and performing cell reselection on the neighboring cell based on the cell quality of the neighboring cell and the remaining service time of the neighboring cell.

[0005] WO 2022086412 A1 discloses a method performed by a wireless device, the method comprising receiving data associated with an airborne or space-based system from a network node. The data comprises satellite ephemeris data and a validity period of the ephemeris data.

[0006] WO 2022079188 A1 discloses an apparatus for a wireless communication network, comprising an antenna unit. The antenna unit includes multiple antennas or one or more antenna arrays, each antenna array having multiple antenna elements. The apparatus communicates with one or more network entities (e.g., a base station or another UE) of the wireless communication network. The apparatus transmits a reference signal (e.g., a sounding reference signal (SRS) or a synchronization signal block (SSB)) to the network entity or receives the reference signal from the network entity using one or more beams beamformed by the apparatus using one or more input parameters. The apparatus transmits feedback to the network entity, indicating the one or more input parameters used by the apparatus to beamform the one or more beams, and / or the apparatus is configured or pre-configured with the one or more input parameters, for example, by the network entity.

[0007] WO 2022056786 A1 discloses a method comprising: determining, at a first device, a list of ordered target cells for a second device to initiate a sequential handover based at least in part on location-related data of the second device, the second device being served in a source cell of the first device; transmitting first information indicating the ordered list of target cells and a radio configuration associated with each of these target cells to the second device; and causing second information indicating the ordered list of target cells to be transmitted to at least one third device serving a target cell in the ordered list to request that the at least one third device allocate resources for the handover. In this way, a chain of target cells for a future handover is determined in a predetermined order, which avoids multiple cells preparing for the same handover, thereby reducing handover preparation delay and improving service continuity.

[0008] US 2022109496 A1 discloses aspects related to a mechanism for a wireless communication device to update satellite- and beam-specific information. A user equipment (UE) selects a first cell associated with a first satellite for wireless communication in a non-terrestrial network. The UE determines whether to access the first cell using one or more standard parameters or one or more satellite cell-specific parameters. The one or more standard parameters are based on one or more standard characteristics common to multiple satellites, including the first satellite. The one or more satellite cell-specific parameters are based on a change to at least one of the one or more standard characteristics of the first satellite.

[0009] US 2022085874 A1 discloses a user equipment (UE) that selects or reselects a target cell in a non-terrestrial network, or restores connection to a target cell after satellite handover of a permanently fixed low Earth orbit (LEO) cell. The target cell is either a serving cell or a non-serving cell. The UE determines the cell type of the target cell. The cell type can be a LEO cell type, a geostationary orbit (GEO) cell type, a mobile cell type, a fixed cell type, a temporarily fixed LEO cell type, or a permanently fixed LEO cell type. The UE selects or reselects a target cell, or restores connection to the target cell, based on the cell type.

[0010] US 2022052753 A1 discloses a cellular network management system that manages communications between ground base stations and user equipment and between orbital base stations and user equipment to provide wireless services and allocate links between the ground base stations and the orbital base stations based on base station availability determined from state space prediction.

[0011] In summary, for Earth mobile cells, the user equipment can deduce when it will lose coverage of the current cell. Until now, existing technologies have either been implicit identification of the cell type (Earth-based vs. space-based), explicit indication of Terrestrial Network (TN) coverage, or iterative methods for interference mitigation between transceivers. Summary of the Invention

[0012] Therefore, the present application solves the problem of how to achieve out-of-coverage prediction of earth mobile cells to achieve mobility management and service continuity.

[0013] In particular, the present application provides solutions to the following: how to determine when coverage of an Earth Mobile Non-Terrestrial Network (NTN) cell (including an aerial platform) will be lost; and how to achieve predictive mobility of relays installed on aerial platforms or vehicles; and how to achieve service continuity when services are provided via Earth Mobile Non-Terrestrial Network cells (or aerial platforms) resulting in frequent connection transfers; and therefore how to improve Terrestrial-Non-Terrestrial Network (TN-NTN) cell reselection.

[0014] According to one aspect of the present disclosure, a method for enhancing mobility and service continuity in a wireless device based on beam pattern information is provided, the wireless device being connected to a wireless network node and receiving a configuration message from the mobile node. The method includes, in response to receiving at least one or more configuration messages from a wireless communication system, evaluating measurement criteria based on specific data including a beam pattern, a node type, a reference location, a trajectory, and velocity data. In response to the measurement trigger criteria being evaluated, performing the following operations: performing measurements based on the specific data, determining interference based on the specific data, and transmitting a measurement report. In response to the measurement trigger criteria being evaluated, not transmitting the measurement report.

[0015] The main advantages of the present invention are as follows:

[0016] - Reduced user equipment specific signaling,

[0017] - Improved mobility support and service continuity,

[0018] - Reduced UE energy consumption and interference between mobile nodes,

[0019] - Enhanced coverage, and

[0020] - Optimized flight path.

[0021] In some embodiments, at least one or more configuration messages from the wireless communication system include measurement objects, events, and corresponding beam-specific and location-specific triggering criteria. The wireless device performs measurements and reports measurement results based on the received measurement configuration message, which includes triggering conditions related to specific data of the mobile node(s). The wireless device determines whether to transmit a measurement report based on the triggering conditions related to the specific data of the mobile node(s). These measurements are related to received signal level and frequency, as well as interference between signals received from at least one or more mobile nodes. The measurement triggering conditions are verified based on the node type, the location of the wireless device relative to the specific beam(s) and node(s) of the wireless communication system, and a beam-specific received signal level above a configured threshold.

[0022] In some embodiments, these measurement reports include node type data (i.e., airborne or ground wireless device), flight path / trajectory data (represented by 3D waypoints, waypoint-specific timestamps), velocity data (represented by horizontal, vertical, and orientation-related data), and beam-specific and interference-related measurement data.

[0023] Furthermore, in some embodiments, the mobile node broadcasts a beam pattern, wherein the beam pattern is adjustable, including angular beam range and / or angular direction of the beam main lobe and / or beam tilt and / or granularity and / or use of a specified beam pattern catalog.

[0024] In some embodiments, the mobile nodes are mobile aerial nodes that exchange reference position and / or trajectory and / or velocity and / or beam pattern data for interference coordination.

[0025] Furthermore, the wireless communication system's source node(s) and / or serving node(s) receiving measurement reports from the wireless device as report data determine, based on the reported data, in particular flight path data, whether the wireless device will enter a beam-specific coverage area of ​​at least one or more potential target nodes. The source node(s) and / or serving node(s) of the wireless communication system forward the reported data to the at least one or more potential target nodes during a handover and / or conditional handover. The at least one or more potential target nodes of the wireless communication system configure a handover command and / or conditional handover command based on the received report data.

[0026] As part of the handover commands and / or conditional handover commands, the at least one or more potential target nodes of the wireless communication system allocate a grant for uplink data transmission of the wireless device. As part of the handover commands and / or conditional handover commands, the at least one or more potential target nodes of the wireless communication system allocate resources, such as random access opportunities and backoff timer values, for random access of the wireless device.

[0027] The present disclosure further contemplates an apparatus for enhancing mobility and service continuity in a wireless device based on beam pattern information, the apparatus comprising a processor coupled to a memory, the memory including computer program instructions stored thereon, the processor being configured by the instructions to perform the following actions: in response to receiving at least one or more configuration messages from a wireless communication system, evaluating measurement criteria based on specific data including beam pattern, node type, reference location, trajectory, and velocity data; in response to the evaluation of the measurement trigger criteria being verified, performing the following actions: performing measurements based on the specific data, determining interference based on the specific data, and transmitting a measurement report; and in response to the evaluation of the measurement trigger criteria being not verified, not transmitting the measurement report.

[0028] The present disclosure further contemplates a wireless device comprising an apparatus as described above. According to an embodiment, the wireless device performs service and / or connection time and mobility estimation.

[0029] The present disclosure further contemplates a wireless network node comprising an apparatus as described above.

[0030] Another aspect of the present disclosure relates to a wireless communication system including a radio network node, a mobile network node, and a wireless device, wherein the radio network node and the mobile network node are configured as the wireless device described above.

[0031] Yet another aspect of the disclosure relates to a computer program product comprising instructions for implementing a method for enhancing mobility and service continuity in a wireless device when the program is executed by a processor.

[0032] Another aspect envisages a computer-readable storage medium comprising computer program instructions for implementing the steps of the above-mentioned method.

[0033] The storage medium may be any entity or device capable of storing a program. For example, the medium may include a storage device such as a ROM (e.g., a CD ROM or a microelectronic circuit ROM), a flash memory, or any magnetic recording device (e.g., a hard disk drive). Furthermore, the information medium may be a transmissible medium, such as an electrical signal or an optical signal, that can be transmitted by radio or other means via an electrical or optical cable.

[0034] Alternatively, the storage medium may be an integrated circuit in which the program is embodied, the circuit being adapted to execute or be used to execute the method in question.

[0035] The advantages of the apparatus, the wireless device, the network node, the wireless system, the computer program and the storage medium are the same as presented with respect to the corresponding method according to any of the above-described embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other advantages and characteristics of the invention will become more apparent on reading the following description, given by way of simple illustrative and non-limiting examples, and the accompanying drawings, in which:

[0037] Figure 1 The background and relevance of the problem solved by the present invention are shown.

[0038] Figure 2 shows NR massive MIMO (prior art),

[0039] Figure 3 shows the Integrated Access and Backhaul (IAB) reference architecture (Prior Art),

[0040] Figure 4 shows cell reselection enhancement (prior art),

[0041] Figure 5 shows a network scenario with three-dimensional mobile nodes,

[0042] Figure 6 shows scenarios utilizing network topology and interference management as well as mobility and service continuity management,

[0043] Figure 7 shows a scenario utilizing backhaul and forwardhaul,

[0044] Figure 8 shows the multi-level node mobility (IAB) proposed in Release 17 (prior art),

[0045] Figure 9 Describes multi-level node mobility,

[0046] Figure 10 shows an architecture multi-level node mobility (IAB) utilizing node types,

[0047] Figure 11 shows a scenario of multi-level node mobility (PC5 relay),

[0048] Figure 12 shows the problem of multi-level node mobility (PC5 relay),

[0049] Figure 13 The basic concept of the method according to the invention is presented,

[0050] Figure 14 An embodiment of the present invention using a Uu backhaul link is shown.

[0051] Figure 15 An embodiment of the present invention using a Uu fronthaul link is shown,

[0052] Figure 16 shows an embodiment of the present invention employing application-triggered reconfiguration,

[0053] Figure 17 An embodiment of the present invention employing inter-node interference coordination is shown,

[0054] Figure 18 An embodiment of the present invention with an RA configuration is shown,

[0055] Figure 19 Another variant of the invention is shown with an RA configuration,

[0056] Figure 20 An embodiment of the invention employing on-demand UE requests is shown. DETAILED DESCRIPTION

[0057] The detailed description set forth below with reference to the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may be practiced. The detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In particular, although terminology from 3GPP 5G NR may be used in this disclosure to illustrate the embodiments herein, this should not be considered as limiting the scope of the invention.

[0058] Some embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. However, other embodiments are also within the scope of the subject matter disclosed herein, and the disclosed subject matter should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.

[0059] Generally, all terms used herein should be interpreted according to their ordinary meaning in the relevant technical field, unless a different meaning is clearly given and / or a different meaning is implied from the context of its use. Unless otherwise expressly stated, all references to one / a kind / this element, device, part, mode, step, etc. should be openly interpreted as referring to at least one instance of an element, device, part, mode, step, etc. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless a step is explicitly described as being after or before another step and / or it is implied that a step must be after or before another step. Where appropriate, any feature of any embodiment disclosed herein may be applicable to any other embodiment. Similarly, any advantage of any embodiment may be applicable to any other embodiment, and vice versa. Based on the following description, other purposes, features and advantages of the attached embodiments will become apparent.

[0060] The term "network node" is used, which corresponds to any type of radio network node or any network node that communicates with a UE (directly or via another node) and / or communicates with another network node. Examples of network nodes are NodeB, MeNB, ENB, a network node belonging to an MCG or SCG, a base station (BS), a multi-standard radio (MSR) radio node (such as an MSRBS, an eNodeB, a gNodeB), a network controller, a radio network controller (RNC), a base station controller (BSC), a relay, a donor node controlled relay, a base transceiver station (BTS), an access point (AP), a transmission point, a transmission node, an RRU, an RRH, a node in a distributed antenna system (DAS), a core network node (such as a mobile switching center (MSC), a mobility management entity (MME), etc.), operations and maintenance (O&M), an operations support system (OSS), a self-optimizing network (SON), a positioning node (such as an evolved serving mobile positioning center (E-SMLC)), minimization of drive tests (MDT), test equipment (physical node or software), etc.

[0061] The term "mobile node" is used to refer to any type of mobile node that communicates with a user equipment (UE) (directly or via another node) and / or with another network node (mobile or non-mobile). Examples of mobile nodes are satellites, aerial devices, low / high altitude platforms, drones, unmanned aerial vehicles, mobile integrated access and backhaul nodes, and vehicle-mounted relays.

[0062] The non-limiting term user equipment (UE) or wireless device is used and refers to any type of wireless device that communicates with a network node and / or another UE in a cellular or mobile communication system. Examples of UEs are target devices, device-to-device (D2D) UEs, machine-type UEs or UEs capable of machine-to-machine (M2M) communication, PDAs, PADs, tablet computers, mobile terminals, smartphones, laptop embedded devices (LEEs), laptop mounted devices (LMEs), USB dongles, M1 category UEs, M2 category UEs, ProSe UEs, V2V UEs, V2X UEs, etc.

[0063] Furthermore, terms such as base station / gNodeB and UE should be considered non-restrictive and, in particular, do not imply a hierarchical relationship between the two. In general, a "gNodeB" can be considered device 1 and a "UE" can be considered device 2, with the two devices communicating with each other over a radio channel. In the following, a transmitter or receiver can be either a gNodeB (gNB) or a UE.

[0064] For the sake of understanding, explanations can be found in the accompanying drawings in text form.

[0065] Figure 1 The context and relevance of the present invention to address the problem of poor or limited coverage in rural or remote areas (e.g., which affects use cases in agriculture, construction, mining, logistics, transportation, utilities) is shown.

[0066] Figure 2 NR massive MIMO design is shown, as presented by Younsun Kim, Samsung, RWS-180008, «NR Physical Layer Design: NR MIMO». Figure 3 The integrated access and backhaul (IAB) reference architecture disclosed by 3GPP TS 23.501 Release 18 is shown.

[0067] Figure 4 A cell reselection enhancement concept is shown, where three terrestrial network cells are covered by a non-terrestrial network, each terrestrial network covering a respective service area defined by a point.

[0068] Figure 5 A network scenario with three-dimensional mobile nodes is shown. According to the figure, multiple ground vehicles operating in service areas with poor or limited terrestrial wireless network coverage are served by a non-terrestrial network (NTN) that utilizes satellites and mobile aerial nodes (e.g., drones following known trajectories or flight paths). Network access is provided to the ground vehicles through backhaul link switching (between satellites and drones) and service link switching (between drones and ground vehicles).

[0069] Figure 6 A scenario utilizing network topology and interference management, as well as mobility and service continuity management, is shown. The assumption for this particular scenario is that at least one terrestrial vehicle is equipped with user equipment capable of acting as a mobile relay (either a vehicle-mounted relay or a mobile base station relay using an integrated access and backhaul (IAB) architecture); NR Uu is used for the radio link between the mobile relay and the served terrestrial vehicle (governed by mobility and service continuity management protocols), and for the radio link between the mobile relay on the ground and the satellite (governed by network topology and interference management protocols).

[0070] Figure 7 Scenarios utilizing backhaul and fronthaul segments are shown for scenarios employing mobile aerial nodes at different altitudes, in this case a balloon located between the drone and the satellite.

[0071] Figure 8 The multi-level node mobility (IAB) proposed in Release 17 of 3GPP, TS 23.501 is shown.

[0072] Figure 9Describes the multi-level node mobility (IAB) proposed in Release 18 of 3GPP, TS 23.501.

[0073] Figure 10 The invention shows an architecture multi-level node mobility (IAB) using node types according to an embodiment of the present invention, wherein a set of specific data is exchanged, including: node type indicator, speed, flight path, and beam pattern data.

[0074] Figure 11 A scenario of multi-level node mobility (PC5 relay) is shown.

[0075] Figure 12 The issue of multi-level node mobility (PC5 relays) is illustrated. The underlying challenges are: How to determine when coverage is lost from a geomobile non-terrestrial network (NTN) cell (including aerial platforms)? How to achieve predictive mobility for aerial platform or vehicle-mounted relays? How to achieve service continuity when services are provided via a geomobile non-terrestrial network cell (or aerial platform), resulting in frequent connection transfers? And, therefore, how to improve terrestrial-to-non-terrestrial network (TN-NTN) cell reselection?

[0076] Figure 13 The general concept of the invention is demonstrated: a mobile node provides node specific data including node type, reference position, flight path or trajectory, speed, beam pattern data.

[0077] Mobile nodes (e.g., satellites, aerial devices, low / high altitude platforms, drones, unmanned aerial vehicles, mobile integrated access and backhaul nodes, vehicle-mounted relays) provide reference position (e.g., latitude, longitude, altitude, orientation), flight path (e.g., 3D waypoints, waypoint-specific timestamps), and velocity (e.g., horizontal, vertical, and orientation-related, similar to the "ephemeris" data of satellites via SIB19), as well as beam pattern data (angular direction of the beam main lobe) and the corresponding beam range. This set of data is referred to as "node-specific data" or specific data.

[0078] Each node broadcasts a node type indicator (e.g., fixed ground node gNB, vehicle-mounted (mobile) IAB node or relay, UAV, LAPS, HAPS, LEO / MEO / GEO satellite) on the serving fronthaul link and backhaul link respectively.

[0079] A node broadcasts a beam pattern (which is adjustable) represented by, for example, angular beam range, angular direction of the beam main lobe, beam tilt, granularity, use of a specified beam pattern catalog.

[0080] If in idle / inactive mode, the UE receives this data as SIB.

[0081] If in active mode, the serving node provides the UE with beam-specific mobility (RRC reconfiguration for CHO and cell / node reselection) and measurement configuration based on the beam pattern data.

[0082] The UE performs serving / connection time and mobility estimation.

[0083] Mobile aerial nodes exchange reference position (represented by coordinates in terms of altitude, longitude, latitude), flight path (or trajectory), speed (or velocity), and beam pattern data for interference coordination.

[0084] For multi-hop backhaul (involving multiple aerial nodes), the above information will be exchanged and used for routing enhancement.

[0085] To transition between non-terrestrial and terrestrial networks (and vice versa) at the edge of terrestrial network coverage, beam-specific mobility configurations are provided to the UE.

[0086] The aerial source node configures the UE to perform radio access at the aerial target node based on the above information (eg, setting radio access opportunities according to speed / rate and predicted beam orientation).

[0087] Receiving node-specific data in advance can help UE perform beam alignment and improve QoS.

[0088] Figure 14 An embodiment of the present invention utilizing a Uu backhaul link is shown. Backhaul: The IAB node receives ephemeris data (e.g., satellites) or node type, reference position, flight path and speed, beam pattern, and range from the IAB donor node (BS). It checks whether the flight path should be adjusted, for example, to increase the time within the coverage area of ​​the serving IAB donor node. The location of the ground vehicle / UE requiring service may restrict the mobility of the mobile IAB node. The IAB node provides the network with node type, reference position, flight path and speed, and beam pattern data specific to the intermediate node. The network / BS updates the mobility and measurement configuration (donor handover and reselection candidates).

[0089] Figure 15An embodiment of the present invention utilizing a Uu fronthaul link is shown. Fronthaul: The network / BS updates mobility and measurement configurations (donor handover and reselection candidates). The network / BS determines the radio access resources (e.g., RACH resources, backoff value, RA timing) of the air node candidates. The UE receives updated mobility, radio access, and measurement configurations from the intermediate (IAB, relay) nodes. The UE receives node type, reference location, flight path and speed, and beam pattern data from the intermediate (IAB, relay) nodes. If PC5: then the UE selects a relay node that guarantees sufficient QoS (e.g., maximum connection time). Otherwise, the UE connects to the best cell / node candidate. The application layer triggers a flight path and / or beam pattern update.

[0090] Figure 16 This embodiment of the present invention illustrates application-triggered reconfiguration. Changing the flight path depends on a "mission" configured at the application layer; the beam pattern is also configured at the application layer. Therefore, the application layer signals the updated flight path and beam pattern configuration to the relay node via the fronthaul link. The intermediate node then updates the flight path and beam pattern configuration.

[0091] Figure 17 Inter-node interference coordination when multiple intermediate nodes are employed is shown.

[0092] Figure 18 An embodiment of the present invention is shown with radio access configuration. In response to receiving a connection establishment message from the network, a mobile aerial node provides its corresponding node-specific data to the network via a fronthaul link. In response to receiving the node-specific data, the network determines the radio access configuration based on the received node-specific data and updates the radio access configuration. The UE receives the updated radio access configuration, performs radio access accordingly, and initiates a mobility event or random access procedure.

[0093] Figure 19 Another embodiment of the invention with radio access configuration is shown under the assumption that the mobile node comprises full ground node or base station capabilities.In this case, the network determines the radio access configuration based on neighboring mobile node data.

[0094] Figure 20 An embodiment of the present invention is shown for on-demand UE requests. At the UE, the application layer estimates the UE mobility and provides the estimated mobility to the UE. The UE sends a request to the mobile node for beam pattern data to match the estimated mobility. In response to receiving the request and the estimated UE mobility, the mobile node checks whether the beam pattern or flight path must be adjusted and sends back adjusted node-specific data (including the adjusted beam pattern and flight path). After receiving the adjusted node-specific data, the UE uses the beam pattern data for beam alignment.

[0095] Some benefits of the present invention are the use of node specific data (node ​​type, location, flight path, speed, beam pattern data) to achieve service continuity as follows:

[0096] The network configures candidate cells (reselection and / or (conditional) handover) only if the estimated connection time is greater than a predetermined time (time threshold provided as part of the network configuration). The network determines the RA resources (e.g., RACH resources, backoff value, RA timing) for the node candidate. Otherwise, the network sets "cell barring information" to a "low priority" cell / node candidate. The estimated connection time (and therefore the configured threshold) is enhanced by taking into account the service type or quality of service (QoS). The flight path and beam pattern threshold configuration are understood, and the connection time to the mobile IAB / relay node is optimized accordingly.

[0097] Using the above information for measurement enhancement means that the UE determines / optimizes the candidate list measurement report based on the indicated flight path and beam pattern. The UE performs measurements only when the mobile IAB / relay node is in range.

[0098] Other benefits of the present application are: as the flight path / trajectory is known / predictable and the beam pattern is shared, the adjustable beam pattern and indication provides more deployment flexibility and potential optimization, SIB broadcast means reduced UE-specific signaling, relay / cell candidate configuration (including radio access RA) and therefore improved service continuity (quality of service), improved measurement reporting, thereby reducing UE energy consumption.

[0099] The knowledge / sharing of satellite beam patterns helps airborne IAB nodes / relays minimize interference, enhance coverage and optimize flight paths.

[0100] By using aerial devices, UAVs, vehicle-mounted relays, or mobile IAB nodes to provide local connectivity, the high cost of building and deploying dedicated mobile network infrastructure is avoided.

[0101] It is not necessary to equip each vehicle with an on-board unit and corresponding antenna that supports the non-terrestrial network NTN, thus saving BOM. Devices that do not support NTN are connected to the (satellite) network via the mobile IAB / relay node.

Claims

1. A method for wireless communication in a wireless communication system, the method being implemented by a wireless device of the wireless communication system, wherein: The wireless device includes a communication unit configured to exchange data with a radio access network (RAN) of the wireless communication system, wherein the method includes, in response to receiving at least one or more configuration messages from the wireless communication system, performing the following operations: Evaluate measurement criteria based on specific data including beam pattern, node type, reference position, trajectory and velocity data, In response to the evaluation of the measurement trigger criteria being verified, the following operations are performed: Perform measurements based on that specific data, Determine the interference based on this specific data, Transmission measurement reports, In response to the evaluation of the measurement trigger criteria failing verification, performing the following actions: No measurement reports are transmitted.

2. The method according to claim 1, wherein The at least one or more configuration messages from the wireless communication system include measurement objects, events, and corresponding beam-specific and location-specific triggering criteria.

3. The method according to claim 1 or 2, wherein: The mobile node broadcasts a beam pattern, wherein the beam pattern is adjustable.

4. The method according to any one of claims 1 to 3, wherein: The beam pattern includes the angular beam range and / or the angular direction of the beam main lobe and / or the beam tilt and / or the granularity and / or the use of a specified beam pattern catalog.

5. The method according to any one of claims 1 to 4, wherein: The mobile nodes are mobile airborne nodes and exchange reference position and / or trajectory and / or velocity and / or beam pattern data for interference coordination.

6. The method according to any one of claims 1 to 5, wherein: The wireless device performs service and / or connection time and mobility estimation.

7. The method according to any one of claims 1 to 6, wherein: The wireless device performs measurement and reports a measurement result according to a received measurement configuration message including a trigger condition related to specific data of the mobile node.

8. The method according to any one of claims 1 to 7, wherein: The wireless device determines whether to transmit a measurement report based on the triggering condition related to specific data of the mobile node(s).

9. The method according to any one of claims 1 to 8, wherein: The measurements are related to received signal levels and frequencies and interference between signals received from at least one or more mobile nodes.

10. The method according to any one of claims 1 to 9, wherein The measurement trigger condition is verified based on the node type, the location of the wireless device relative to a specific beam and node of the wireless communication system, and a beam-specific received signal level above a configured threshold.

11. The method according to any one of claims 1 to 10, wherein The measurement report includes node type data, ie, airborne or terrestrial wireless device.

12. The method according to any one of claims 1 to 10, wherein The measurement report includes node type data, ie, airborne or terrestrial wireless device.

13. The method according to any one of claims 1 to 10, wherein The measurement report includes flight path / trajectory data represented by 3D waypoints, waypoint-specific timestamps.

14. The method according to any one of claims 1 to 10, wherein The measurement report includes velocity data represented by horizontal, vertical, and orientation-related data.

15. The method according to any one of claims 1 to 10, wherein The measurement report also includes beam-specific and interference-related measurement data.

16. The method according to any one of claims 1 to 15, wherein The wireless communication system receives a measurement report from the wireless device as a source node and / or a serving node of the report data, and determines whether the wireless device will enter a beam-specific coverage area of ​​at least one or more potential target nodes thereof based on the reported data, in particular the flight path data.

17. The method according to any one of claims 1 to 16, wherein The source node and / or serving node of the wireless communication system forwards the reported data to at least one or more potential target nodes during handover and / or conditional handover.

18. The method according to any one of claims 1 to 17, wherein At least one or more potential target nodes of the wireless communication system configure a handover command and / or a conditional handover command based on the received report data.

19. The method according to any one of claims 1 to 18, wherein As part of the handover command and / or the conditional handover command, at least one or more potential target nodes of the wireless communication system allocate a grant for uplink data transmission for the wireless device.

20. The method according to any one of claims 1 to 19, wherein As part of the handover command and / or the conditional handover command, at least one or more potential target nodes of the wireless communication system allocate resources, such as random access opportunities and backoff timer values, for random access of the wireless device.

21. An apparatus for enhancing mobility and service continuity in a wireless device connected to a wireless network node, the communication unit comprising a processor coupled to a memory, the memory comprising computer program instructions stored thereon, the processor being configured by the instructions to perform the method according to claims 1 to 20.

22. A wireless device comprising the apparatus according to claim 21.

23. A wireless network node comprising an apparatus according to claim 22, the apparatus comprising a processor coupled to a memory, the memory comprising computer program instructions stored thereon, the processor being configured by the instructions to perform the method according to claims 1 to 20.

24. A mobile node connected to a wireless network node, the mobile node comprising an apparatus according to claim 23, the apparatus comprising a processor coupled to a memory, the memory comprising computer program instructions stored thereon, the processor being configured by the instructions to perform the method according to claims 1 to 20.

25. The mobile node according to claim 24, the mobile node broadcasting specific data on the serving / fronthaul link and the backhaul link.

26. The mobile node according to claim 24 or 25, wherein: The mobile node is a drone, high altitude platform station (HAPS), unmanned aerial vehicle (UAV), satellite, vehicle mounted relay, mobile relay, mobile base station relay with integrated and access backhaul node (MBSR-IAB).

27. A wireless communication system comprising the radio network node according to claim 23 and the mobile node according to claim 24, the radio network node and the mobile node being configured to configure the wireless device according to claim 22.

28. A computer program product comprising instructions for implementing the method for enhancing mobility and service continuity according to any one of claims 1 to 20 and / or instructions for implementing the method in a wireless device according to claim 22 when the program is executed by a processor.

29. A non-transitory computer-readable storage medium comprising computer program instructions stored thereon for implementing the method for enhancing mobility and service continuity according to any one of claims 1 to 20 and / or instructions for implementing the method for enhancing mobility and service continuity in a wireless device according to claim 22.

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