Wireless communication method, controller, apparatus, NTN base station, device, medium, and program

Abstract

Disclosed are a wireless communication method, controller, apparatus, NTN base station, device, medium, and program wherein the wireless communication method is applied to a controller of an anchor cell, the anchor cell representing a pre-delimited ground fixed cell for NTN communication; the method comprises the following steps: establishing an associated registration relationship with an NTN base station under the condition that the coverage range of the NTN base station in a mobile cell mode and the range of an anchor cell have an overlapping region; sending the first TAC and the first PCI of the anchor cell to the NTN base station based on the association registration relationship; the first TAC comprises a TAC of an anchor cell or a TAC of each overlapping sub-region; the overlapped sub-region is a sub-region corresponding to the overlapped region; the sub-regions are obtained by dividing the anchor point cell; the NTN base station is used for broadcasting the first PCI and the first TAC to the terminal in the overlapping area, and the first PCI and the first TAC are used for determining the location area of the terminal.

Description

Technical Field

[0001] This application belongs to the field of wireless technology, and specifically relates to a wireless communication method, controller, device, non-terrestrial network (NTN) base station, equipment, medium and program. Background Technology

[0002] If Earth Moving Cells directly adopt the existing cellular architecture of the 3rd Generation Partnership Project (3GPP), the following technical problems will arise: Because Earth Moving Cells move rapidly along with the high-speed movement of low-Earth orbit satellites, the cell location of ground user terminals within that cell will frequently change. For connected user terminals, frequent cell changes will cause continuous migration of the terminal's radio link connection, reducing the system stability of the mobile communication network. For idle users, assuming different Earth Moving Cells use different Tracking Area Codes (TACs), frequent cell changes may cause signaling storms. Summary of the Invention

[0003] This application provides a wireless communication method, controller, device, NTN base station, equipment, medium, and program.

[0004] This application provides a wireless communication method applied to a controller of an anchor cell, wherein the anchor cell represents a pre-defined fixed cell anchored to the ground for NTN communication; the method includes:

[0005] In cases where the coverage area of ​​an NTN base station in moving cell mode overlaps with the coverage area of ​​the anchor cell, an association registration relationship is established with the NTN base station.

[0006] Based on the associated registration relationship, associated registration information is sent to the NTN base station; the associated registration information includes a first TAC and a first physical cell identity (PCI) of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell; the NTN base station is used to broadcast the first PCI and the first TAC to terminals in the overlapping region, and the first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0007] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: receiving a wavelet registration request initiated by the NTN base station; the wavelet registration request is used to register wavelets to the overlapping sub-regions.

[0008] It can be seen that dividing the anchor cell into multiple sub-regions by the coverage of a single wavelet or a wavelet group composed of multiple wavelets makes it easier for NTN base stations to predict and arrange the use of wavelets when registering wavelets in each sub-region, thereby improving the efficiency of wavelet registration.

[0009] In some embodiments, the method further includes: receiving a wavelength coverage update request sent by the NTN base station when the overlapping area changes; and updating the overlapping sub-area corresponding to the NTN base station based on the wavelength coverage update request.

[0010] As can be seen, this embodiment provides a method for updating the beam position coverage in mobile cell mode. When the overlapping area changes, timely updating the beam position coverage of the overlapping sub-areas within the current coverage area of ​​the NTN base station helps to ensure the wireless communication needs within the NTN coverage area.

[0011] In some embodiments, the method further includes: determining a first target area where the target terminal for the downlink data transmission is located before performing downlink data transmission; the first target area is one of the plurality of sub-areas; and performing downlink data transmission in the first target area based on the NTN base station corresponding to the first target area.

[0012] As can be seen, this embodiment provides a method for downlink data transmission within an anchor cell. The method provided in this embodiment is beneficial for finding the first target area corresponding to the target terminal within the anchor cell, and realizing downlink data transmission within the first target area.

[0013] In some embodiments, the method further includes: receiving a paging message from an idle terminal; the paging message being determined based on a target TAC of the idle terminal; determining an NTN base station corresponding to a second target area based on a second target area corresponding to the target TAC; the second target area being one or more sub-areas among the plurality of sub-areas; and the NTN base station corresponding to the second target area being used to paging the idle terminal.

[0014] As can be seen, the method given in this embodiment can realize paging of idle terminals in the anchor cell, thereby improving paging efficiency.

[0015] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: receiving a deregistration request sent by the NTN base station when there is no overlapping area between the NTN base station and the anchor cell; the deregistration request is used to remove the associated registration relationship.

[0016] It can be seen that when the coverage area of ​​the NTN base station no longer overlaps with the anchor cell, the network resources of the anchor cell's controller can be released in a timely manner through the deregistration operation, while ensuring that the new NTN base station can register its waveform on the anchor cell's controller.

[0017] This application also provides a wireless communication method applied to an NTN base station in mobile cell mode, the method comprising:

[0018] In cases where the coverage area of ​​the NTN base station overlaps with the coverage area of ​​the anchor cell, an association registration relationship is established with the controller of the anchor cell; the anchor cell refers to a pre-defined fixed cell anchored to the ground for NTN communication.

[0019] Based on the association registration relationship, the system receives association registration information sent by the controller; the association registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell;

[0020] The first PCI and the first TAC are broadcast to terminals within the overlapping area, and the first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0021] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: performing a wavelet registration operation based on each overlapping sub-region.

[0022] It can be seen that dividing the anchor cell into multiple sub-regions by the coverage of a single wavelet or a wavelet group composed of multiple wavelets makes it easier for NTN base stations to predict and arrange the use of wavelets when registering wavelets in each sub-region, thereby improving the efficiency of wavelet registration.

[0023] In some embodiments, the method further includes: in the event that the overlapping area changes, initiating a wavelength coverage update request to the anchor cell controller; the wavelength coverage update request is used to enable the controller to update the overlapping sub-area corresponding to the NTN base station.

[0024] As can be seen, this embodiment provides a method for updating the beam position coverage in mobile cell mode. When the overlapping area changes, timely updating the beam position coverage based on the overlapping sub-areas within the current coverage area of ​​the NTN base station helps to ensure the wireless communication needs within the NTN coverage area.

[0025] In some embodiments, when the coverage area of ​​the NTN base station overlaps with the coverage areas of two or more anchor cells, the method further includes: in the case of uplink data transmission, determining the target controller to which the target terminal of the uplink data transmission belongs; the target controller is the controller of one of the two or more anchor cells; and performing uplink data transmission based on the target controller.

[0026] It can be seen that by determining the target controller to which the target terminal of the uplink data transmission belongs before performing uplink data transmission, it is beneficial to improve the accuracy of uplink data transmission and enable uplink data transmission to the controller of the accurate anchor cell.

[0027] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: sending a deregistration request to the controller; the deregistration request is used to remove the association registration relationship when there is no overlapping area between the NTN base station and the anchor cell.

[0028] It can be seen that when the coverage area of ​​the NTN base station no longer overlaps with the range of the anchor cell, the network resources of the anchor cell controller can be released in a timely manner through the deregistration operation, while ensuring that the new NTN base station performs waveform registration on the anchor cell controller.

[0029] This application embodiment also provides a controller for an anchor cell, wherein the anchor cell represents a pre-defined fixed cell anchored to the ground for NTN communication; the controller includes:

[0030] The first interaction module is used to establish an association registration relationship with the NTN base station when there is an overlap between the coverage area of ​​the NTN base station in mobile cell mode and the coverage area of ​​the anchor cell.

[0031] A first sending module is configured to send association registration information to the NTN base station based on the association registration relationship; the association registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is a sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell; the NTN base station is configured to broadcast the first PCI and the first TAC to terminals in the overlapping region, the first PCI and the first TAC being used to determine the location area of ​​the terminal.

[0032] This application also provides a wireless communication device applied to a non-terrestrial network (NTN) base station in mobile cell mode, the device comprising:

[0033] The second interaction module is used to establish an association registration relationship with the controller of the anchor cell when there is an overlap between the coverage area of ​​the NTN base station and the coverage area of ​​the anchor cell; the anchor cell represents a pre-defined fixed area of ​​the anchor ground for NTN communication.

[0034] A first receiving module is configured to receive association registration information sent by the controller based on the association registration relationship; the association registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell;

[0035] The second transmitting module is used to broadcast the first PCI and the first TAC to the terminal in the overlapping area, wherein the first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0036] This application also provides an NTN base station, which includes the aforementioned wireless communication device.

[0037] This application provides an electronic device, which includes a processor and a memory for storing computer programs capable of running on the processor; wherein,

[0038] The processor is used to run the computer program to perform any of the above-described wireless communication methods.

[0039] This application provides a computer storage medium storing a computer program that, when executed by a processor, implements any of the above-described wireless communication methods.

[0040] This application provides a computer program product, including a computer program that, when executed by a processor, implements any of the above-described wireless communication methods.

[0041] This application provides a wireless communication method, controller, apparatus, NTN base station, device, medium, and program. The wireless communication method described in this application replaces the PCI and TAC of the NTN base station with a fixed first TAC and a first PCI of the anchor cell. For connected user terminals, this effectively reduces frequent cell switching, improving user experience and the system stability of the mobile communication network. For idle user terminals, the fixed first PCI and first TAC prevent frequent location updates, effectively reducing network congestion and improving paging efficiency. Attached Figure Description

[0042] Figure 1 A schematic diagram of a fixed Earth cell provided in an embodiment of this application;

[0043] Figure 2 A schematic diagram of a mobile cell provided in this application embodiment;

[0044] Figure 3 A flowchart of a wireless communication method provided in an embodiment of this application;

[0045] Figure 4 A momentary schematic diagram of an anchor cell provided in an embodiment of this application;

[0046] Figure 5 A schematic diagram of an anchor point cell sub-region provided in an embodiment of this application;

[0047] Figure 6 A flowchart of another wireless communication method provided in an embodiment of this application;

[0048] Figure 7 A schematic diagram of the structure of a controller for an anchor cell provided in an embodiment of this application;

[0049] Figure 8 This is a schematic diagram of the structure of a wireless communication device provided in an embodiment of this application;

[0050] Figure 9 This is a schematic diagram of the composition structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0051] For satellite coverage scenarios, 3GPP has defined two cell types: Earth-Fixed Cells and Earth-Mobile Cells. Earth-Fixed Cells are a non-terrestrial network solution whose main characteristic is that the cell is permanently or temporarily fixed at a specific location on Earth. Its coverage method can be found in [reference needed]. Figure 1 Earth-based fixed cells can utilize the existing 3GPP cellular architecture by anchoring to a ground area. However, in order to anchor to the ground area, the angle of the satellite base station needs to be constantly changed, and its coverage area is relatively limited.

[0052] Earth-mobile cells are a non-terrestrial network solution that provides cells that can move continuously across the Earth. This coverage method can be referenced... Figure 2 The satellite angle corresponding to a mobile cell remains constant, achieving the maximum ground coverage area. However, the ground coverage area changes simultaneously with the satellite's movement, posing a significant challenge if the existing 3GPP cellular architecture is used.

[0053] The wireless communication method described in this application is mainly applied to mobile cell mode. Currently, when Earth mobile cells directly adopt the existing 3GPP cellular architecture, the cell in which the ground user terminal is located changes frequently due to the rapid movement of Earth mobile cells along with the high-speed movement of low-Earth orbit satellites. Taking a low-Earth orbit of 500 kilometers as an example, the cell in which the user terminal is located changes every few minutes. For connected user terminals, frequent cell changes cause the wireless link connection from the original cell to the target cell to constantly migrate, reducing user experience and reducing the system stability of the mobile communication network. For idle user terminals, when different Earth mobile cells use different TACs, frequent cell changes cause the user terminal to frequently update its location area, causing signaling storms; if a considerable number of Earth mobile cells use the same TAC, it will also greatly reduce the paging efficiency of user terminals.

[0054] To better utilize the advantages of Earth-based mobile cells, such as the ability to maintain a constant satellite angle and achieve maximum coverage, while also being fully compatible with existing 3GPP cellular architectures, this application provides a wireless communication method for mobile cell modes. This method ensures that user terminals perform various mobility management operations based on a fixed first PCI and first TAC, which helps to achieve compatibility with existing 3GPP cellular architectures that are compatible with Earth-based mobile cells.

[0055] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the embodiments provided herein are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application. Furthermore, the embodiments provided below are some embodiments for implementing this application, and not all embodiments for implementing this application. Unless otherwise specified, the technical solutions described in the embodiments of this application can be implemented in any combination.

[0056] It should be noted that, in the embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly described, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other related elements in the method or apparatus that includes that element (e.g., steps in the method or units in the apparatus; for example, a unit in the apparatus may be a portion of circuitry, a portion of a processor, a portion of a program or software, etc.).

[0057] The wireless communication method provided in this application includes a series of steps, but the wireless communication method provided in this application is not limited to the steps described. Similarly, the wireless communication device, anchor cell controller, and NTN base station provided in this application include a series of modules, but the device, controller, and NTN base station provided in this application are not limited to the modules explicitly described, and may also include modules that need to be set up to obtain relevant information or to process based on the information.

[0058] This application provides a wireless communication method applied to a controller of an anchor cell, where the anchor cell represents a pre-defined fixed cell anchored to the ground for NTN communication. To avoid frequent changes in the coverage area of ​​mobile earth cells, this application introduces anchor cells into NTN communication, specifically for mobile earth cell scenarios within NTN communication. Figure 2 As shown, Earth Mobile Cell utilizes non-terrestrial platforms such as satellites to achieve wireless signal coverage and transmission, providing users with seamless mobile communication services. It is particularly suitable for remote areas, oceans, mountains, and other areas where terrestrial base station networks are difficult to cover.

[0059] NTN base stations used to achieve Earth mobile cell communication can be base stations mounted on high-altitude platforms such as satellites, drones, and high-altitude balloons. Taking satellite base stations as an example, satellite base stations use satellite communication instead of fiber optic (or microwave) transmission, utilizing satellites as relay stations to achieve data connection between the base station and the core network equipment room. Satellite base stations typically consist of satellite antennas, wireless communication equipment, power supply systems, and necessary control and management software.

[0060] The anchor cell provided in this application is a fixed cell anchored to the ground, obtained by dividing the ground area into communication zones to achieve NTN communication. The location of the anchor cell can be determined according to specific communication needs, and the range of the anchor cell can be determined based on the coverage area of ​​the NTN base station. Taking the NTN base station as a satellite base station as an example, in order to ensure the communication quality of ground users, the signal coverage areas of every two adjacent satellite base stations will have a partial overlap. Therefore, when designing the range of the anchor cell, it can be determined that the entire range of the anchor cell can be covered by the signal of the NTN base station. At the same time, in order to reduce the mutual interference between the signals of two adjacent NTN base stations, the range of the anchor cell can also be set to be smaller than the coverage area of ​​three NTN base stations, ensuring that the anchor cell is only covered by the signal of two NTN base stations.

[0061] After defining the location and range of the anchor cell, a controller is set up for the anchor cell. When there is an overlap between the coverage area of ​​the NTN base station and the anchor cell, the controller of the anchor cell is used to establish an association registration relationship with the NTN base station in the overlapping area and manage the communication between the NTN base station, the anchor cell and the user terminals within the anchor cell.

[0062] Figure 3 A flowchart of a wireless communication method is shown, applied to the controller of an anchor cell. Figure 3 The wireless communication methods shown include:

[0063] Step 301: In cases where the coverage area of ​​the NTN base station in mobile cell mode overlaps with the coverage area of ​​the anchor cell, establish an association registration relationship with the NTN base station.

[0064] like Figure 4 As shown, Figure 4 A schematic diagram of an anchor point cell is shown. Figure 4 The shaded area shown represents the pre-defined area of ​​the anchor cell. When using Earth mobile cells for communication, Earth mobile cell 1 corresponding to NTN base station 1 overlaps with the anchor cell, and Earth mobile cell 2 corresponding to NTN base station 2 also overlaps with the anchor cell. In this step, the overlapping area between the coverage of the corresponding NTN base station and the anchor cell indicates an overlap between the Earth mobile cell and the anchor cell. Figure 4 As shown, Figure 4 In the anchor cell, some user terminals communicate through NTN base station 1, while other user terminals communicate through NTN base station 2.

[0065] As can be seen, since the anchor cell is stationary relative to the ground, while NTN base stations, such as satellite base stations, typically use low-Earth orbit (LEO) satellites for 5G (5G) technology. The orbital speed of LEO satellites is usually much greater than the Earth's rotation speed. Therefore, for a fixed anchor cell located on the Earth's surface, its corresponding NTN base station is constantly moving. Figure 4 As shown in the figure, assuming that the NTN base station rotates counterclockwise, the overlapping area between NTN base station 1 and the anchor cell will continuously decrease over time until there is no overlapping area between NTN base station 1 and the anchor cell; while the overlapping area between NTN base station 2 and the anchor cell will continuously increase. At the same time, the coverage area of ​​the adjacent NTN base station to the right of NTN base station 2, assuming it is NTN base station 3 (not shown in the figure), will gradually overlap with the anchor cell over time.

[0066] In this step, when the coverage area of ​​the NTN base station (corresponding to the Earth Mobile Cell area) overlaps with that of the anchor cell, the anchor cell's controller establishes an association registration relationship with the NTN base station in the overlapping area. Over time, the anchor cell's controller continuously establishes association registration relationships with new overlapping NTN base stations.

[0067] Taking an NTN base station as an example, the controller can establish a registration relationship with the NTN base station based on satellite ephemeris data. Satellite ephemeris is a set of parameters describing the orbital motion of a satellite, and its real-time position can be calculated based on these parameters. By pre-setting a corresponding algorithm in the controller, the three-dimensional spatial position of the satellite at a specific point in time can be calculated based on the acquired satellite ephemeris data. Using the obtained three-dimensional spatial position of each satellite at a specific point in time, a registration relationship is established with the corresponding satellite base station.

[0068] Step 302: Based on the association registration relationship, send the association registration information to the NTN base station.

[0069] The associated registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell; the NTN base station is used to broadcast the first PCI and the first TAC to the terminal in the overlapping region, and the first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0070] After the controller establishes an association registration relationship with the NTN base station, the controller sends the corresponding first PCI and first TAC to the NTN base station. Upon receiving the first PCI and first TAC from the controller, the NTN base station broadcasts messages to terminal devices and communication systems within the corresponding anchor cell that are within its communication range. These broadcast messages include, but are not limited to, System Information Block (SIB) messages, Master Information Block (MIB) messages, network identifiers, and service information. The first TAC can be a TAC set by the controller based on the anchor cell, meaning one anchor cell corresponds to one first TAC. When the anchor cell is divided into multiple sub-regions, a TAC can be pre-set for each sub-region. In this case, one anchor cell corresponds to multiple TACs. The controller can also determine the sub-regions overlapping with the coverage area of ​​the current NTN base station as overlapping sub-regions and send the TAC and first PCI of each overlapping sub-region to the NTN base station.

[0071] In this embodiment, in addition to broadcasting its own PCI in the SIB message, the NTN base station also broadcasts the first PCI and first TAC it receives, as well as the bandgap information configured by the NTN base station. The NTN base station's PCI serves as a unique identifier for satellite broadcast signals, helping the terminal distinguish signals from different satellites or different broadcast services. The terminal can accurately identify and receive signals from a specific satellite. By broadcasting the bandgap information configured by the NTN base station, the normal operation and communication quality of the satellite communication system can be ensured.

[0072] The first PCI serves as the PCI of the anchor cell, and the first TAC serves as the TAC of the anchor cell or as the TAC of each overlapping sub-region. By broadcasting fixed PCI and TAC to the terminal device through the NTN base station, the network side can track and grasp the location information of mobile terminals within the anchor cell, and realize mobility management and location services for user terminals within the anchor cell.

[0073] To improve system capacity, optimize network coverage, and enhance network performance, anchor cells can be divided into multiple sub-regions. In practice, anchor cells can be further divided based on the service requirements of different areas within the anchor cell, or based on the terrain factors corresponding to the anchor cell, or a combination of various practical application requirements.

[0074] exist Figure 4 Based on the instantaneous schematic diagram of the anchor point cell shown, Figure 5 A schematic diagram of an anchor cell sub-region is shown. After establishing an association registration relationship with the NTN base station through the controller, the controller sends the TAC for each overlapping sub-region to the NTN base station. Taking NTN base station 1 as an example, according to... Figure 5 As shown, the overlapping sub-regions corresponding to NTN base station 1 within the anchor cell are sub-regions 6 to 8. In this case, the controller of the anchor cell can use the TAC of each sub-region from sub-region 6 to sub-region 8 as the first TAC and send the first TAC to NTN base station 1. NTN base station 1 is then responsible for terminal communication within sub-regions 6 to 8 of the anchor cell. For NTN base station 2, according to... Figure 5 As shown, the overlapping sub-regions corresponding to NTN base station 2 within the anchor cell are sub-regions 1 to 5. In this case, the controller of the anchor cell can use the TAC of each sub-region from sub-region 1 to sub-region 5 as the first TAC and send the first TAC to NTN base station 2. NTN base station 2 is then responsible for terminal communication within sub-regions 1 to 5 of the anchor cell. Simultaneously, based on the first PCI and the first TAC received by the terminal, the NTN base station corresponding to the terminal, as well as the anchor cell and sub-region where the terminal is located, can be determined, thus determining the terminal's location area.

[0075] When an NTN base station broadcasts an SIB message to each corresponding overlapping sub-region, it also broadcasts the TAC (Local Address Code) for each sub-region to all terminals within that sub-region. Upon receiving the broadcast TAC, the terminals in the corresponding sub-region record it and use it for subsequent location updates, paging responses, and optimized mobility management. When a user terminal moves from sub-region 1 to sub-region 2, it receives the corresponding TAC broadcast within sub-region 2 and initiates a location update request to the mobile communication network. This request contains the terminal's current location information, i.e., the new sub-region TAC.

[0076] As can be seen, since the NTN base station is constantly moving relative to the anchor cell, when the NTN base station broadcasts the PCI and TAC of the NTN base station to user terminals within the anchor cell, the user terminals need to continuously switch their corresponding mobile earth cells. When determining the terminal's location area using the NTN base station's PCI and TAC, the terminal needs to continuously receive changing NTN base station PCI and TAC. In this embodiment, by using a fixed first PCI and first TAC as information to determine the terminal's location area within the anchor cell, the user terminal, when inside the anchor cell, does not need to frequently switch its mobile earth cell based on the received NTN base station PCI and TAC, thus improving the system stability and user experience of the mobile communication network. Simultaneously, since the user does not need to switch TAC and PCI based on changes in the NTN base station when within the anchor cell area, determining the terminal's location area using the first PCI and first TAC allows for rapid determination of the user terminal's location area during paging, improving paging efficiency.

[0077] In practical applications, steps 301 to 302 can be implemented based on a processor, which can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), Controller, Microcontroller, and Microprocessor.

[0078] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: receiving a wavelet registration request initiated by the NTN base station; the wavelet registration request is used to register wavelets to the overlapping sub-regions.

[0079] The waveband of an NTN base station represents the position of a radio wave in space. In wireless communication, waveband control can improve communication quality and reliability, while also reducing interference and energy consumption. Waveband control can be achieved by controlling the NTN base station antenna. In satellite communication, satellite base stations can adjust the signal transmission path by precisely controlling the position and orientation of the antenna. In this embodiment, the anchor cell is divided into multiple sub-regions based on the coverage area of ​​the NTN base station's waveband. The size of each sub-region can be determined as the coverage area of ​​a single NTN base station waveband, or the coverage area of ​​a waveband group consisting of multiple wavebands.

[0080] by Figure 5 Taking the example shown, the anchor cell is divided according to the coverage area of ​​a single waveband or a waveband group composed of multiple wavebands, resulting in sub-regions 1 to 8. Based on the overlapping area between each sub-region and the NTN base station, sub-regions 1 to 5 are designated as the communication area corresponding to NTN base station 2, and sub-regions 6 to 8 are designated as the communication area corresponding to NTN base station 1. Specifically, based on... Figure 5 As shown, sub-region 5 is the center of the anchor cell. At this time, sub-region 5 is simultaneously located in Earth mobile cell 1 of NTN base station 1 and Earth mobile cell 2 of NTN base station 2. In this case, sub-region 5 can be divided into the range of Earth mobile cell 1 according to the preset rules, or sub-region 5 can be divided into the range of Earth mobile cell 2, or sub-region 5 can be divided into the Earth mobile cell with the stronger signal strength according to the signal strength within the range of sub-region 5.

[0081] by Figure 5 Taking NTN base station 1 as an example, the sub-regions overlapping with NTN base station 1 are sub-regions 6 to 8. Before receiving the beampoint registration request initiated by NTN base station 1, the controller can first determine the beam pointing parameters of the NTN base station antenna based on the location distribution, size, proximity relationship between overlapping sub-regions, and current user needs within the anchor cell. The beam pointing parameters include beam information such as beam azimuth, elevation, and beamwidth. The controller sends the determined beam information to NTN base station 1. NTN base station 1 determines the specific requirements for beampoint registration based on the received beam information, such as beam azimuth, elevation, and beamwidth, sets appropriate transmit power and beam parameters, and submits the configured beampoint information and beam parameters as a beampoint registration request to the controller. The controller verifies and checks the beampoint registration request submitted by NTN base station 1 to ensure the accuracy and validity of the beampoint registration.

[0082] It can be seen that since the range of each sub-region within the anchor cell is related to the coverage range of the NTN base station's wavelength, it is easier for the NTN base station to predict and arrange the use of wavelengths when registering wavelengths for each sub-region, thereby improving the efficiency of wavelength registration.

[0083] In some embodiments, the method further includes: receiving a wavelength coverage update request sent by an NTN base station when the overlapping area changes; and updating the overlapping sub-area corresponding to the NTN base station based on the wavelength coverage update request.

[0084] Taking an NTN base station as an example, the trajectory and location of the NTN base station can be tracked in real time through the satellite navigation system and the controller of the anchor cell, allowing for timely understanding of changes in the relative position between the satellite and the ground, thereby indirectly assessing changes in coverage area. When the overlapping area between the coverage area of ​​the NTN base station and the range of the anchor cell changes, the communication range covered by the NTN base station in the anchor cell changes, and the NTN base station will send a beamwidth coverage update request to the controller.

[0085] by Figure 5 Taking the example shown, assuming NTN base station 1 and NTN base station 2 move counterclockwise, the coverage area of ​​NTN base station 2 within the anchor cell changes over time. After a period of time, NTN base station 2 moves to... Figure 5 When the NTN base station 1 is positioned as shown, the overlapping sub-regions corresponding to NTN base station 2 change from sub-regions 1 to 5 to sub-regions 6 to 8. At this time, NTN base station 2 will be used to implement wireless communication within sub-regions 6 to 8. NTN base station 2 sends a wavelength coverage update request to the controller. Based on the wavelength coverage update request, NTN base station 2 can request the controller to register wavelengths for sub-regions 6 to 8. The controller updates the overlapping sub-regions corresponding to NTN base station 2 according to the wavelength coverage update request.

[0086] As can be seen, since the NTN base station is constantly moving and changing relative to the ground, the communication range covered by the NTN base station is also changing. The wavelet coverage update method given in this embodiment enables the controller to determine the communication range covered by the NTN base station in a timely manner, ensuring the communication quality within the anchor cell.

[0087] In some embodiments, the method further includes: determining a first target area where the target terminal for the downlink data transmission is located before performing downlink data transmission; the first target area is one of a plurality of sub-areas; and performing downlink data transmission in the first target area based on the NTN base station corresponding to the first target area.

[0088] Based on the wireless communication architecture provided in this application, before a user terminal needs to transmit downlink data, for example, after the user submits a data download request or a location request to the controller through the target terminal, the controller can obtain the location of the target terminal through its internal positioning algorithm, database query, or interaction with other systems (such as positioning servers, geographic information systems, etc.), and determine the first target area where the target terminal for downlink data transmission is located. The first target area determines which NTN base station the target terminal for downlink data transmission is currently located in, and further determines the NTN base station corresponding to the target terminal, enabling the target terminal to transmit data through the corresponding NTN base station, thus realizing downlink data transmission.

[0089] by Figure 5 As shown in the example, when a user sends a data download request or a location request to the controller via the target terminal for downlink data transmission, the controller obtains that the target terminal for downlink data transmission is currently located in sub-region 3. The controller further determines that the NTN base station corresponding to sub-region 3 is NTN base station 2. At this time, the target terminal for downlink data transmission can initiate a data download request to NTN base station 2, and downlink data transmission can be performed through NTN base station 2.

[0090] In some embodiments, the method further includes: receiving a paging message from an idle terminal; the paging message is determined based on a target TAC of the idle terminal; determining an NTN base station corresponding to a second target area based on a second target area corresponding to the target TAC; the second target area is one or more sub-areas among a plurality of sub-areas; the NTN base station corresponding to the second target area is used to paging the idle terminal.

[0091] Based on the wireless communication method provided in this application, when paging an idle terminal, the core network can send a paging message to the corresponding second target area based on the target TAC sent by the idle terminal. After receiving the paging message for the second target area, the controller determines the corresponding NTN base station based on the second target area and sends a paging message to the user terminal based on the second target area. Here, the target TAC can specifically be the TAC of the sub-area where the target terminal is located.

[0092] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the method further includes: receiving a deregistration request sent by the NTN base station when there is no overlapping area between the NTN base station and the anchor cell; the deregistration request is used to remove the associated registration relationship.

[0093] Based on the wireless communication method given in the above embodiments, and Figure 5The corresponding sub-region division method, when the NTN base station is far away from the current anchor cell, for example Figure 5 When NTN base station 1 moves counterclockwise, causing a non-overlapping area between its Earth mobile cell 1 and the anchor cell, the signal from NTN base station 1 cannot meet the communication needs of terminals within the anchor cell. In this case, NTN base station 1 initiates a deregistration operation on the controller of the anchor cell that has moved out of its coverage area, thus removing the association registration relationship between NTN base station 1 and the current anchor cell.

[0094] It can be seen that when the NTN base station is far away from the anchor cell and cannot provide communication support to the anchor cell, actively initiating the wavelet registration operation can help reduce the maintenance workload of the mobile communication network system, release the terminal's resource occupation in a timely manner, and improve the overall performance of the mobile communication network system.

[0095] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0096] Corresponding to the wireless communication method proposed in the above embodiments, this application also provides another wireless communication method applied to an NTN base station in mobile cell mode. That is, based on the wireless communication method given in the above embodiments, this application also provides a wireless communication method applied to the NTN base station side, such as... Figure 6 As shown, Figure 6 A flowchart of another wireless communication method is shown, including:

[0097] Step 601: In cases where the coverage area of ​​the NTN base station overlaps with the coverage area of ​​the anchor cell, establish an association registration relationship with the controller of the anchor cell.

[0098] Anchor cells refer to fixed cells pre-defined for NTN communication anchored to the ground. This embodiment corresponds to the method given in step 301 above. In cases where the coverage area of ​​the NTN base station overlaps with the area of ​​the anchor cell, the NTN base station can also proactively establish an association registration relationship with the virtual cell controller.

[0099] Step 602: Based on the association registration relationship, receive the association registration information sent by the controller.

[0100] The associated registration information includes the first TAC and the first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell, or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell.

[0101] Corresponding to the method given in step 302 above, after the NTN base station and the controller establish an association registration relationship, the controller will send the first TAC and the first PCI of its corresponding anchor cell to the NTN base station. When the anchor cell is pre-divided into multiple sub-regions, a TAC can be pre-set for each sub-region, and overlapping sub-regions can be determined based on the coverage area of ​​the NTN base station and the overlapping area of ​​the sub-regions. The controller then sends the TAC of each overlapping sub-region and the first PCI of the anchor cell to the NTN base station.

[0102] Step 603: Broadcast the first PCI and the first TAC to the terminals in the overlapping area.

[0103] The first PCI and the first TAC are used to determine the location area of ​​the terminal. After receiving the first PCI and the first TAC sent by the controller, the NTN base station will broadcast messages to terminal devices, communication systems, etc. in the corresponding anchor cell that are included in its communication range. Here, the messages broadcast by the NTN base station include, but are not limited to, SIB messages, MIB messages, network identifiers and service information.

[0104] In addition to broadcasting its own PCI in the SIB message, NTN base stations also broadcast the first PCI and first TAC they receive, as well as the bandgap information configured by the NTN base station. The NTN base station's PCI serves as a unique identifier for satellite broadcast signals, helping terminals distinguish signals from different satellites or broadcast services, allowing terminals to accurately identify and receive signals from specific satellites. Broadcasting the bandgap information configured by the NTN base station ensures the normal operation and communication quality of the satellite communication system.

[0105] The first PCI and the first TAC are fixed PCI and TAC, and are broadcast to the terminal device through the NTN base station. This helps the network side track and grasp the location information of mobile terminals in the anchor cell, and realize mobility management and location services for user terminals in the anchor cell.

[0106] In practical applications, steps 601 to 603 can be implemented based on a processor, which can be at least one of ASIC, DSP, DSPD, PLD, FPGA, CPU, controller, microcontroller, and microprocessor.

[0107] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the above method further includes: performing a wavelet registration operation based on each overlapping sub-region.

[0108] Reference Figure 5The illustrated diagram of anchor cell division corresponds to the method described in the above embodiments. After dividing the anchor cells into multiple sub-regions, the NTN base station can actively initiate beam position registration for each overlapping sub-region. Taking a satellite base station as an example, the satellite communication system can predefine beam configurations, including beam direction, beamwidth, and transmit power. When the satellite base station actively initiates beam position registration, it can determine the beam information based on the predefined beam configuration and adjust the beam direction and power according to real-time communication needs and satellite position information.

[0109] NTN base stations can proactively initiate a beam registration request to the controller of the anchor cell, attaching specific beam information. Upon receiving confirmation of beam registration, the beam registration is confirmed to be successful.

[0110] In some embodiments, the method further includes: in the event of a change in the overlapping area, initiating a wavelength coverage update request to the anchor cell controller; the wavelength coverage update request is used to enable the controller to update the overlapping sub-area corresponding to the NTN base station.

[0111] Corresponding to the wavelength coverage update method given in the above embodiments, when the overlapping area between the coverage area of ​​the NTN base station and the range of the anchor cell changes, the communication range covered by the NTN base station in the anchor cell changes, and the NTN base station will send a wavelength coverage update request to the controller.

[0112] In some embodiments, when the coverage area of ​​the NTN base station overlaps with the coverage areas of two or more anchor cells, the method further includes: in the case of uplink data transmission, determining the target controller to which the target terminal of the uplink data transmission belongs; the target controller is the controller of one of the two or more anchor cells; and performing uplink data transmission based on the target controller.

[0113] When a user needs to upload data via a terminal, i.e., perform uplink data transmission, the target terminal for the uplink data transmission needs to transmit the data to be uploaded to the corresponding NTN base station. The NTN base station then transmits the uploaded data to the controller of the anchor cell, and the controller integrates and forwards the uploaded data. Figure 4 As shown in the diagram, taking NTN base station 1 as an example, the coverage area of ​​NTN base station 1 includes not only the anchor cell shown in the diagram, but also an idle coverage area. In other words, NTN base station 1 can actually cover the communication range of two or more anchor cells.

[0114] When the coverage area of ​​an NTN base station overlaps with the coverage areas of two or more anchor cells, and a user needs to upload data, the corresponding NTN base station, upon receiving the data uploaded by the target terminal for uplink data transmission, can determine the anchor cell to which the target terminal belongs through signal measurement based on the signals emitted by the target terminal, and further determine the target controller to which the target terminal belongs. After determining the target controller, the NTN base station sends the received data uploaded by the target terminal to the target controller, thus realizing uplink data transmission. Finally, the target controller processes and forwards the uplink data, storing it in internal memory or external memory.

[0115] As can be seen, the method given in this embodiment can realize the user's uplink data transmission, and further can accurately transmit the user's uplink data to the corresponding target controller.

[0116] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single or multiple wavelengths of the NTN base station; the method further includes sending a deregistration request to the controller; the deregistration request is used to remove the association registration relationship when there is no overlapping area between the NTN base station and the anchor cell.

[0117] Corresponding to the deregistration request operation given in the above embodiments, when the NTN base station is far away from the anchor cell and cannot provide communication support for the anchor cell, the NTN base station can actively initiate a wavelet deregistration operation, reduce the maintenance workload of the mobile communication network system, release the terminal's resource occupation in a timely manner, and improve the overall performance of the mobile communication network system.

[0118] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0119] This application provides a wireless communication method and proposes a wireless base station architecture for mobile cell mode. By introducing anchor cells and corresponding anchor cell controllers, and dividing the ground anchor cells based on the wavelength coverage of the NTN base station, the NTN base station of the earth mobile cell performs wavelength registration and deregistration for its coverage sub-area on the controller of the anchor cell. This ensures that user terminals in each sub-area can perform various mobility management operations based on the first TAC and the first PCI of the anchor cell controller, which helps to adapt the earth mobile cell to the existing 3GPP cellular architecture.

[0120] Based on the wireless communication method proposed in the foregoing embodiments, this application also provides a controller for an anchor cell, such as... Figure 7 As shown, Figure 7 A schematic diagram of a controller for an anchor cell is shown, wherein the anchor cell represents a pre-defined fixed cell anchored to the ground for NTN communication, and the controller includes:

[0121] The first interaction module 701 is used to establish an association registration relationship with the NTN base station when there is an overlap between the coverage area of ​​the NTN base station in the mobile cell mode and the coverage area of ​​the anchor cell.

[0122] The first sending module 702 is used to send association registration information to the NTN base station based on the association registration relationship; the association registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell; the NTN base station is used to broadcast the first PCI and the first TAC to the terminals in the overlapping region, and the first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0123] In practical applications, the first interaction module 701 and the first sending module 702 can be implemented based on a processor and a communication device.

[0124] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the controller of the anchor cell also includes a second receiving module, which is used to receive a wavelet registration request initiated by the NTN base station; the wavelet registration request is used to register wavelets to the overlapping sub-regions.

[0125] In some embodiments, the second receiving module is further configured to receive a wavelength coverage update request sent by the NTN base station when the overlapping area changes; the controller of the anchor cell further includes a first processing module, which is configured to update the overlapping sub-area corresponding to the NTN base station based on the wavelength coverage update request.

[0126] In some embodiments, the first processing module is further configured to determine a first target area where the target terminal for the downlink data transmission is located before performing downlink data transmission; the first target area is one of a plurality of sub-areas; the first sending module 702 is further configured to perform downlink data transmission in the first target area based on the NTN base station corresponding to the first target area.

[0127] In some embodiments, the second receiving module is further configured to receive a paging message from an idle terminal; the paging message is determined based on the target TAC of the idle terminal; the first processing module is further configured to determine the NTN base station corresponding to the second target area based on the second target area corresponding to the target TAC; the second target area is one or more sub-areas among a plurality of sub-areas; the NTN base station corresponding to the second target area is used to paging the idle terminal.

[0128] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the second receiving module is further configured to receive a deregistration request sent by the NTN base station when there is no overlapping area between the NTN base station and the anchor cell; the deregistration request is used to remove the associated registration relationship.

[0129] It should be noted that the description of the controller embodiments above is similar to the description of the wireless communication method embodiments applied to the controller above, and has similar beneficial effects as the same method embodiments. For technical details not disclosed in the controller embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0130] Based on the wireless communication method proposed in the foregoing embodiments, this application also provides a wireless communication device applied to an NTN base station in mobile cell mode, such as... Figure 8 As shown, Figure 8 A schematic diagram of a wireless communication device is shown, which includes:

[0131] The second interaction module 801 is used to establish an association registration relationship with the controller of the anchor cell when there is an overlap between the coverage area of ​​the NTN base station and the coverage area of ​​the anchor cell; the anchor cell refers to a fixed cell that is pre-defined as an anchor ground for NTN communication.

[0132] The first receiving module 802 is used to receive association registration information sent by the controller based on the association registration relationship; the association registration information includes a first TAC and a first PCI of the anchor cell; the first TAC includes the TAC of the anchor cell or the TAC of each overlapping sub-region; the overlapping sub-region is the sub-region corresponding to the overlapping region; the sub-region is obtained by dividing the anchor cell.

[0133] The second transmitting module 803 is used to broadcast a first PCI and a first TAC to the terminal in the overlapping area. The first PCI and the first TAC are used to determine the location area of ​​the terminal.

[0134] In practical applications, the second interaction module 801, the first receiving module 802, and the second sending module 803 can be implemented based on a processor and a communication device.

[0135] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the wireless communication device further includes a second processing module, which is used to perform a wavelet registration operation based on each overlapping sub-region.

[0136] In some embodiments, the second sending module 803 is further configured to initiate a wavelength coverage update request to the anchor cell controller when the overlapping area changes; the wavelength coverage update request is used to enable the controller to update the overlapping sub-area corresponding to the NTN base station.

[0137] In some embodiments, when the coverage area of ​​the NTN base station overlaps with the coverage areas of two or more anchor cells, the second processing module is further configured to determine the target controller to which the target terminal of the uplink data transmission belongs during uplink data transmission; the target controller is the controller of one of the two or more anchor cells; and uplink data transmission is performed based on the target controller.

[0138] In some embodiments, the anchor cell includes multiple sub-regions, which are obtained by dividing the anchor cell based on the coverage of a single wavelet or a wavelet group composed of multiple wavelets of the NTN base station; the second sending module 803 is also used to send a deregistration request to the controller; the deregistration request is used to remove the association registration relationship when there is no overlapping area between the NTN base station and the anchor cell.

[0139] It should be noted that the description of the above device embodiments is similar to the description of the wireless communication method embodiments applied to NTN base stations, and has similar beneficial effects as the same method embodiments. For technical details not disclosed in the device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0140] Based on the wireless communication device proposed in the foregoing embodiments, this application also provides an NTN base station, which includes the aforementioned wireless communication device. The NTN base station in this embodiment includes, but is not limited to, any one of a satellite base station, an upper-level platform station, or a ground control station.

[0141] In addition to the aforementioned wireless communication device, the NTN base station in this application embodiment also includes a base station antenna, a radio frequency transceiver module, a signal processor, a power supply system, a control system, and other auxiliary equipment.

[0142] It should be noted that, in the embodiments of this application, if the above methods are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a terminal, server, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of this application are not limited to any specific hardware and software combination.

[0143] This application also provides an electronic device. Figure 9 This is a schematic diagram of the composition structure of an electronic device provided in an embodiment of this application, as shown below. Figure 9 As shown, the electronic device 90 may include:

[0144] Memory 901 is used to store executable instructions.

[0145] The processor 902 is used to implement any of the above-mentioned wireless communication methods when executing the executable instructions stored in the memory 901.

[0146] The processor 902 mentioned above can be at least one of ASIC, DSP, DSPD, PLD, FPGA, CPU, controller, microcontroller, and microprocessor.

[0147] The aforementioned computer-readable storage medium or memory 901 may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM), etc.; it may also be various terminals that include one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0148] This application embodiment further provides a computer storage medium storing computer-executable instructions for implementing any of the wireless communication methods provided in the above embodiments.

[0149] Correspondingly, this application embodiment further provides a computer program product, the computer program product including computer executable instructions, which are used to implement any of the wireless communication methods provided in the above embodiments.

[0150] In some embodiments, the functions or modules of the apparatus, controller, and NTN base station provided in this application can be used to execute the methods described in the above method embodiments. The specific implementation can be referred to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0151] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0152] The methods disclosed in the various method embodiments provided in this application can be arbitrarily combined to obtain new method embodiments without conflict.

[0153] The features disclosed in the various product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0154] The features disclosed in the various method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0155] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0156] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the protection scope of this application.

Claims

1. A method of wireless communication, the method comprising: A controller applied to an anchor cell, the anchor cell representing a pre-designated anchor ground fixed cell for non-terrestrial network (NTN) communication; the method comprising: In a case where a coverage range of an NTN base station in a moving cell mode and a range of the anchor cell have an overlapping area, establishing an associated registration relationship with the NTN base station; Based on the associated registration relationship, sending associated registration information to the NTN base station; the associated registration information comprising a first tracking area code (TAC) and a first physical cell identifier (PCI) of the anchor cell; the first TAC comprising a TAC of the anchor cell or a TAC of each overlapping sub-area; the overlapping sub-area being a sub-area corresponding to the overlapping area; the sub-area being obtained by dividing the anchor cell; the NTN base station being configured to broadcast the first PCI and the first TAC to a terminal in the overlapping area, the first PCI and the first TAC being used to determine a location area of the terminal.

2. The method of claim 1, wherein, The anchor cell comprises a plurality of sub-areas, the plurality of sub-areas being obtained by dividing the anchor cell based on a coverage range of a single wave position or a plurality of wave position groups of the NTN base station; the method further comprising: Receiving a wave position registration request initiated by the NTN base station; the wave position registration request being used to register a wave position to the overlapping sub-area.

3. The method of claim 2, wherein, The method further comprises: In a case where the overlapping area changes, receiving a wave position coverage update request sent by the NTN base station; Based on the wave position coverage update request, updating the overlapping sub-area corresponding to the NTN base station.

4. The method of claim 2, wherein, The method further comprises: Before performing downlink data transmission, determining a first target area where a target terminal of the downlink data transmission is located; the first target area being one of the plurality of sub-areas; Based on an NTN base station corresponding to the first target area, performing downlink data transmission in the first target area.

5. The method of claim 1, wherein, The method further comprises: Receiving a paging message of an idle-state terminal; the paging message being determined based on a target TAC of the idle-state terminal; Based on a second target area corresponding to the target TAC, determining an NTN base station corresponding to the second target area; the second target area being one or more of the plurality of sub-areas; the NTN base station corresponding to the second target area being configured to page the idle-state terminal.

6. The method of claim 1, wherein, The anchor cell comprises a plurality of sub-areas, the plurality of sub-areas being obtained by dividing the anchor cell based on a coverage range of a single wave position or a plurality of wave position groups of the NTN base station; the method further comprising: In a case where the NTN base station and the anchor cell do not have an overlapping area, receiving a deregistration request sent by the NTN base station; the deregistration request being used to cancel the associated registration relationship.

7. A method of wireless communication, the method comprising: A non-terrestrial network (NTN) base station in a moving cell mode, the method comprising: In a case where a coverage range of the NTN base station and a range of the anchor cell have an overlapping area, an associated registration relationship is established with a controller of the anchor cell; the anchor cell represents a pre-defined fixed cell of an anchoring ground for NTN communication; Based on the associated registration relationship, associated registration information sent by the controller is received; the associated registration information includes a first tracking area code (TAC) and a first physical cell identifier (PCI) of the anchor cell; the first TAC includes a TAC of the anchor cell or a TAC of each overlapping sub-area; the overlapping sub-area is a sub-area corresponding to the overlapping area; and the sub-area is obtained by dividing the anchor cell. The first PCI and the first TAC are broadcast to terminals in the overlapping area, and the first PCI and the first TAC are used to determine a location area of the terminal.

8. The method of claim 7, wherein, The anchor cell includes a plurality of sub-areas, which are obtained by dividing the anchor cell based on a coverage range of a single wave position or a wave position group composed of a plurality of wave positions of the NTN base station; the method further includes: Based on each overlapping sub-area, a wave position registration operation is performed.

9. The method of claim 8, wherein, The method further includes: In a case where the overlapping area changes, a wave position coverage update request is initiated to the anchor cell controller; the wave position coverage update request is used to make the controller update the overlapping sub-area corresponding to the NTN base station.

10. The method of claim 7, wherein, In a case where the coverage range of the NTN base station and the range of two or more anchor cells have overlapping areas, the method further includes: In a case of uplink data transmission, a target controller to which a target terminal of the uplink data transmission belongs is determined; the target controller is a controller of one of the two or more anchor cells; Based on the target controller, uplink data transmission is performed.

11. The method of claim 7, wherein, The anchor cell includes a plurality of sub-areas, which are obtained by dividing the anchor cell based on a coverage range of a single wave position or a wave position group composed of a plurality of wave positions of the NTN base station; the method further includes: A deregistration request is sent to the controller; the deregistration request is used to cancel the associated registration relationship in a case where the NTN base station and the anchor cell do not have overlapping areas.

12. A controller of an anchor cell, characterized by The anchor cell represents a pre-defined fixed cell of an anchoring ground for non-terrestrial network (NTN) communication; the controller includes: A first interaction module is configured to establish an associated registration relationship with an NTN base station in a moving cell mode in a case where a coverage range of the NTN base station and a range of the anchor cell have an overlapping area. The first sending module is configured to send, to the NTN base station, associated registration information based on the associated registration relationship; the associated registration information comprises a first tracking area code (TAC) and a first physical cell identifier (PCI) of the anchor cell; the first TAC comprises a TAC of the anchor cell or a TAC of each overlapping sub-area; the overlapping sub-area is a sub-area corresponding to the overlapping area; the sub-area is obtained by dividing the anchor cell; and the NTN base station is configured to broadcast the first PCI and the first TAC to terminals in the overlapping area, so that the first PCI and the first TAC are used to determine a location area of the terminals.

13. A wireless communication device, comprising: The non-terrestrial network (NTN) base station applied to a moving cell mode comprises: The second interaction module is configured to establish an associated registration relationship with a controller of an anchor cell in a case where a coverage range of the NTN base station and a range of the anchor cell have an overlapping area; the anchor cell represents a pre-divided fixed area on the ground for NTN communication; The first receiving module is configured to receive associated registration information sent by the controller based on the associated registration relationship; the associated registration information comprises a first tracking area code (TAC) and a first physical cell identifier (PCI) of the anchor cell; the first TAC comprises a TAC of the anchor cell or a TAC of each overlapping sub-area; the overlapping sub-area is a sub-area corresponding to the overlapping area; and the sub-area is obtained by dividing the anchor cell. The second sending module is configured to broadcast the first PCI and the first TAC to terminals in the overlapping area, so that the first PCI and the first TAC are used to determine a location area of the terminals.

14. A non-terrestrial network, NTN, base station, the base station comprising: The NTN base station comprises the wireless communication device of claim 13.

15. An electronic device, comprising: The electronic device comprises a processor and a memory for storing a computer program capable of running on the processor; wherein The processor is configured to run the computer program to perform the method of any one of claims 1 to 6 or any one of claims 7 to 11.

16. A computer storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the method of any one of claims 1 to 6 or any one of claims 7 to 11.

17. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the method of any one of claims 1 to 6 or any one of claims 7 to 11. The computer program is executed by the processor to implement the method of any one of claims 1 to 6 or any one of claims 7 to 11.

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