Information transmission method and device, related equipment, storage medium and computer program product

Abstract

The invention discloses an information transmission method and device, a gateway, network equipment, a storage medium and a computer program product. The method comprises: a gateway determines first information, the gateway at least can acquire related information of a non-terrestrial network (NTN) cell and a terrestrial network (TN) cell, the first information represents a mapping relationship between each first area in the NTN cell and the TN cell, and the first area represents a coverage area of an NTN satellite beam; using the first information to determine second information, the second information representing related information of a neighbor cell corresponding to each first region in the NTN cell after a first duration, the neighbor cell corresponding to the first region belonging to the TN cell, and the second information being used for cell reselection; and sending the second information to the NTN network equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, and in particular to an information transmission method and device, related equipment, a storage medium and a computer program product. BACKGROUND

[0002] In related technologies, the star-ground collaborative networking refers to a networking mode of deeply integrating a terrestrial network (TN) with a non-terrestrial network (NTN), and a communication system formed by the star-ground collaborative networking has strong coverage capability, high service stability and good user experience. Meanwhile, a series of industries can be constructed around the communication system, and the constructed industries can also be referred to as star-ground integration industries.

[0003] With the continuous development of the star-ground integration industries, it is an important development direction of the star-ground integration industries to improve the overall service capability of the communication system to meet the higher demand of users for communication services.

[0004] However, how to improve the service capability of the communication system under the star-ground collaborative networking has not yet been effectively solved. SUMMARY

[0005] To solve the problems in related technologies, the embodiments of the present application provide an information transmission method and device, a gateway, a network device, a storage medium and a computer program product.

[0006] The technical solutions of the embodiments of the present application are implemented as follows:

[0007] The embodiments of the present application provide an information transmission method applied to a gateway, the gateway being capable of acquiring at least related information of an NTN cell and a TN cell, the NTN cell changing with time, and the method comprising the following steps:

[0008] determining first information, the first information representing a mapping relationship between each first area in the NTN cell and the TN cell, the first area representing a coverage area of an NTN satellite beam;

[0009] determining second information by using the first information, the second information representing related information of a neighboring area corresponding to each first area in the NTN cell after a first time length, the neighboring area corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection;

[0010] sending the second information to an NTN network device.

[0011] In the above solution, the second information is periodically determined, and the second information is periodically sent to the NTN network device.

[0012] In the scheme, the first time length is associated with at least a first time delay, a second time delay and a third time delay, the first time delay represents a communication time delay between the gateway and the NTN network device, the second time delay represents a processing time delay of the NTN network device for generating a system message for cell reselection based on the second information, and the third time delay represents a communication time delay between the NTN network device and the terminal.

[0013] In the scheme, the first information is determined by:

[0014] The third information includes related information of the NTN cell, and the fourth information includes related information of the TN cell.

[0015] In the scheme, the third information includes one or more of the following:

[0016] Ephemeris information of the NTN satellite;

[0017] Dynamic beam pointing information of the NTN satellite;

[0018] Dynamic range information of the NTN cell;

[0019] Dynamic range information of each first area in the NTN cell.

[0020] In the scheme, the fourth information includes one or more of the following:

[0021] Identification information of one or more TN network devices;

[0022] Position information of one or more TN network devices;

[0023] Related information of one or more TN cells.

[0024] In the scheme, the first information is determined by the third information and the fourth information, including:

[0025] For each first area in the NTN cell, the fifth information is determined by the third information, the fifth information representing the first area; the sixth information is determined by the fourth information and the fifth information, the sixth information representing a dynamic coverage range of a second area that overlaps with the first area and the TN cell; and a mapping relationship between the first area, the second area and the TN cell is determined.

[0026] The first information is determined based on all the determined mapping relationships.

[0027] Embodiments of the present application also provide an information transmission method applied to an NTN network device, the method comprising:

[0028] receive second information sent by a gateway, the gateway being capable of obtaining at least related information of NTN cells and TN cells, the NTN cells changing over time, the second information representing related information of neighbor cells corresponding to each first area in the NTN cells after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighbor cells corresponding to the first area belonging to the TN cells, the second information being used for cell reselection;

[0029] determine, by using the second information, for each first area, seventh information representing the neighbor cells corresponding to the first area; and broadcast, by using an NTN satellite beam corresponding to the first area, a system message containing the seventh information, the system message being used for cell reselection.

[0030] In the above scheme, the neighbor cells corresponding to the first area include one or more of the following:

[0031] a neighbor cell having a same frequency as the first area;

[0032] a neighbor cell having a different frequency from the first area;

[0033] a neighbor cell having a different network type from the first area.

[0034] In the above scheme, the system message includes a newly defined system message, or the system message includes an existing system message.

[0035] Embodiments of the present application also provide an information transmission apparatus arranged in a gateway, the gateway being capable of obtaining at least related information of NTN cells and TN cells, the NTN cells changing over time, comprising:

[0036] a determining unit configured to determine first information representing a mapping relationship between each first area in the NTN cells and the TN cells, the first area representing a coverage area of an NTN satellite beam, and determine second information representing related information of neighbor cells corresponding to each first area in the NTN cells after a first time length by using the first information, the neighbor cells corresponding to the first area belonging to the TN cells, the second information being used for cell reselection;

[0037] a sending unit configured to send the second information to an NTN network device.

[0038] Embodiments of the present application also provide an information transmission apparatus arranged in an NTN network device, comprising:

[0039] The receiving unit is configured to receive second information sent by a gateway, the gateway being capable of obtaining at least related information of an NTN cell and a TN cell, the NTN cell changing over time, the second information representing related information of a neighbor cell corresponding to each first area in the NTN cell after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighbor cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0040] The processing unit is configured to determine, by using the second information, for each first area, seventh information representing a neighbor cell corresponding to the first area, and broadcast a system message by using an NTN satellite beam corresponding to the first area, the system message containing the seventh information and being used for cell reselection.

[0041] The embodiments of the present application also provide a gateway, the gateway being capable of obtaining at least related information of an NTN cell and a TN cell, the NTN cell changing over time, and comprising:

[0042] The first processor is configured to determine first information representing a mapping relationship between each first area in the NTN cell and the TN cell, the first area representing a coverage area of an NTN satellite beam, and determine, by using the first information, second information representing related information of a neighbor cell corresponding to each first area in the NTN cell after a first time length, the neighbor cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0043] The first communication interface is configured to send the second information to an NTN network device.

[0044] The embodiments of the present application also provide a network device, the network device being an NTN network device, comprising a second processor and a second communication interface, wherein:

[0045] The second communication interface is configured to receive second information sent by a gateway, the gateway being capable of obtaining at least related information of an NTN cell and a TN cell, the NTN cell changing over time, the second information representing related information of a neighbor cell corresponding to each first area in the NTN cell after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighbor cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0046] The second processor is configured to determine, by using the second information, for each first area, seventh information representing a neighboring cell corresponding to the first area, and broadcast, by using the second communication interface, a system message containing the seventh information through a NTN satellite beam corresponding to the first area, the system message being used for cell reselection.

[0047] Embodiments of the present application further provide a gateway, comprising a first processor and a first memory for storing a computer program capable of running on the processor,

[0048] The first processor is configured to execute the steps of any of the above-mentioned gateway-side methods when running the computer program.

[0049] Embodiments of the present application further provide a network device, comprising a second processor and a second memory for storing a computer program capable of running on the processor,

[0050] The second processor is configured to execute the steps of any of the above-mentioned network device-side methods when running the computer program.

[0051] Embodiments of the present application further provide a storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of any of the above-mentioned gateway-side methods or the steps of any of the above-mentioned network device-side methods.

[0052] Embodiments of the present application further provide a computer program product comprising a computer program, the computer program being executed by a processor to implement the steps of any of the above-mentioned gateway-side methods or the steps of any of the above-mentioned network device-side methods.

[0053] The information transmission method and device provided in the embodiments of the present application, related equipment, storage medium and computer program product, a gateway determines first information, the gateway can at least acquire related information of a non-terrestrial network NTN cell and a terrestrial network TN cell, the NTN cell changes with time, the first information represents a mapping relationship between each first area in the NTN cell and the TN cell, and the first area represents a coverage area of an NTN satellite beam; the first information is used to determine second information, the second information represents related information of a neighboring cell corresponding to each first area in the NTN cell after a first time length, the neighboring cell corresponding to the first area belongs to the TN cell, and the second information is used for cell reselection; the second information is sent to an NTN network device; meanwhile, the NTN network device receives the second information sent by the gateway; for each first area, seventh information is determined by using the second information, the seventh information represents a neighboring cell corresponding to the first area; a system message is broadcasted through an NTN satellite beam corresponding to the first area, the system message includes the seventh information, and the system message is used for cell reselection. In the scheme provided in the embodiments of the present application, in the case that the NTN cell changes with time, the gateway maintains the mapping relationship (that is, the first information) between the coverage area corresponding to each beam in the NTN cell (that is, the first area) and the TN cell that has intersection or overlap with the coverage area of the beam, then the NTN network side (that is, the NTN network device) acquires the mapping relationship from the gateway, and determines the TN neighboring cell corresponding to the coverage area of each NTN satellite beam (that is, the neighboring cell corresponding to the first area) based on the mapping relationship, so that when the NTN network side broadcasts the system message through the beam, the neighboring cell relationship corresponding to the beam is carried in the system message, the neighboring cell relationship corresponding to each beam can be accurately configured, and the communication service capability under the star-ground collaborative networking is improved. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 A network architecture diagram of star-ground collaborative networking in the related art;

[0055] Figure 2 A flowchart of an information transmission method according to an embodiment of the present application;

[0056] Figure 3 A flowchart of another information transmission method according to an embodiment of the present application;

[0057] Figure 4 A flowchart of a third information transmission method according to an embodiment of the present application;

[0058] Figure 5 A flowchart of a terminal idle state cell reselection method for a beam flat scanning mode star-ground collaborative networking scenario according to an application example of the present application;

[0059] Figure 6 A structure schematic diagram of an information transmission device according to an embodiment of the present application;

[0060] Figure 7 A structure schematic diagram of another information transmission device according to an embodiment of the present application;

[0061] Figure 8 A structure schematic diagram of a gateway according to an embodiment of the present application;

[0062] Figure 9 A structure schematic diagram of a network device according to an embodiment of the present application;

[0063] Figure 10 A structure schematic diagram of an information transmission system according to an embodiment of the present application. DETAILED DESCRIPTION

[0064] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0065] In the related art, TN (which can also be understood as a ground cellular network) is used to cover hot spot areas such as cities (which can also be understood as providing network services for hot spot areas such as cities), and NTN (which can also be referred to as a satellite network, or NTN network) is used to cover remote areas with relatively few users outside the cities, so as to realize star-ground collaborative networking. In this way, TN network devices (such as ground base stations) do not need to be additionally deployed in remote areas to provide services for the remote areas, which can reduce construction and operation and maintenance costs.

[0066] In the scenario of star-ground collaborative networking, the network side needs to determine the neighboring cell relationship between the NTN cell (which can also be understood as the NTN coverage range, or the satellite coverage range) and the TN cell (which can also be understood as the TN coverage range, or the ground base station coverage range), so that the terminal (which can also be understood as the user) in the connected state and / or the idle state can effectively perform neighboring cell management and / or mobility management based on the determined neighboring cell relationship. It can be seen that timely and accurate determination of the neighboring cell relationship between the NTN cell and the TN cell can effectively improve the service capability of the communication system of the star-ground collaborative networking.

[0067] In actual application, when determining the neighboring cell relationship between the NTN cell and the TN cell, the following challenges exist:

[0068] 1) The scale difference between NTN cell and TN cell is huge, for example, the scale of NTN cell (also can be understood as NTN cell range) can reach tens of thousands or even hundreds of thousands of square kilometers; while the scale of TN cell is usually only a few square kilometers, which is much smaller than NTN cell. In this case, NTN cell usually intersects or overlaps with a large number of TN cells (also can be understood as intersection or overlap), that is, the star-ground overlapping area (i.e., the area where NTN cell and TN cell intersect or overlap) contains a large number of TN cells;

[0069] 2) In NTN, NTN network device can provide network service to the coverage area (i.e., beam coverage area) corresponding to each beam (also can be understood as NTN satellite beam, or NTN beam, or NTN satellite beam) of NTN satellite (also can be referred to as satellite of NTN network) in NTN cell through the beam. In this case, the coverage areas of different beams correspond to different neighbor cell relationships, and neighbor cell relationships need to be determined for each beam coverage area to achieve accurate neighbor cell configuration (also can be understood as neighbor cell relationship configuration or neighbor cell information configuration) and improve service capability.

[0070] Based on this, in the scenario of star-ground collaborative networking, determining the neighbor cell relationship between NTN cell and TN cell means: for the coverage area corresponding to each NTN satellite beam in NTN cell, determining one or more TN cells (i.e., the neighbor cell of the beam coverage area) that intersect or overlap with the beam coverage area.

[0071] In actual application, the working mode of NTN satellite can include Earth-Fixed mode and Earth-Moving mode, in the Earth-Fixed mode (i.e., in the case that NTN satellite works in Earth-Fixed mode), the pointing direction of NTN satellite beam continuously adjusts with the movement of satellite to realize that NTN satellite beam fixedly covers the same area (also can be understood as geographic area) in a certain time period (also can be understood as a period of time, or Earth-Fixed time) to continuously provide service for the area, i.e., to fix the cell. In this case, NTN cell (i.e., NTN fixed area) does not move in the above-mentioned certain time period, and the neighbor cell relationship between NTN cell and TN cell remains unchanged in the above-mentioned certain time period. It can be seen that in the Earth-Fixed mode, NTN cell does not change frequently, and the neighbor cell relationship between NTN cell and TN cell can be established relatively simply. Therefore, the star-ground integration industry at present mainly focuses on the research of star-ground collaborative networking in the Earth-Fixed mode (i.e., in the case that NTN works in the Earth-Fixed mode).

[0072] Specifically, in the gaze mode, multiple beam positions can be pre-divided for the NTN cell, such as the NTN cell can be divided into hundreds of beam positions, and the geographical range of each beam position can generally reach several hundred to several thousand square kilometers. In this case, when the NTN provides services to the ground terminal (i.e., the terminal located on the ground) through the satellite, the beam hopping technology (i.e., in combination with the beam hopping technology) can be used to achieve that the NTN provides services (specifically including sending synchronization signals, etc.) to different beam positions in the NTN cell at different time periods. The network side can pre-determine, for each beam position, the TN cell that has intersection or overlap with the beam position (i.e., determine the corresponding neighbor relation of the beam position), and configure the neighbor relation to the terminal (also can be understood as the user) located in the beam position through the beam-level (i.e., for each beam position) broadcast message and / or connected state signaling, etc., so as to achieve fine and differentiated beam-level neighbor relation configuration.

[0073] In actual application, as shown in Figure 1 , a gateway (specifically can be referred to as a satellite-ground cooperative gateway) can be arranged between the TN and the NTN (also can be understood as between the satellite and the ground), the gateway is connected with the NTN satellite gateway station (specifically can be used for managing and controlling the NTN network) and the TN ground cellular base station, and can be used for dynamically managing and controlling the mapping relationship (i.e., the neighbor relation) between the TN cell and the NTN cell. At this time, the process of the network side determining the beam-level neighbor relation can include: the gateway obtains TN cell related information (such as location information, etc.) and NTN cell related information (such as beam position location information, etc.), and determines the TN neighbor corresponding to each beam position, thereby obtaining the beam-level neighbor relation; then, the gateway sends the obtained beam-level neighbor relation to the satellite gateway station for the NTN network side to configure the neighbor relation.

[0074] As can be seen from the above description, in the gaze mode, the network side can determine the beam-level neighbor relation based on the pre-set beam position, and configure the determined neighbor relation to the terminal located in the corresponding beam position, so that the terminal (specifically including the connected state and / or idle state terminal) can perform neighbor management and / or mobility management based on the received neighbor relation corresponding to the beam position where the terminal is located, with the beam position as the granularity, which can effectively improve the system performance and enhance the user experience.

[0075] However, in the flat-scan mode (i.e., in the case that the NTN satellite works in the flat-scan mode), the pointing direction of the NTN satellite beam is fixed, and the coverage area of the NTN satellite beam slides over the ground (i.e., flat-scan movement) as the satellite moves, in which case, the beam direction does not need to be frequently adjusted, the implementation is relatively simple, and the geographical area of the NTN service changes constantly as the satellite moves, i.e., the NTN cell changes over time, since the TN cell usually does not move, therefore, when the NTN cell changes frequently, the neighbor relation of the NTN cell also changes frequently accordingly, which brings greater challenges to the neighbor configuration.

[0076] It can be seen that in the flat-scan mode, the NTN cell changes over time, and at this time, how to effectively implement the neighbor relation configuration is currently urgent to be solved.

[0077] Based on this, in various embodiments of the present application, in the case that the NTN cell changes over time, the gateway cooperated by the satellite and the ground maintains the mapping relationship between the coverage area corresponding to each beam in the NTN cell and the TN cell that exists intersection or overlap with the coverage area of the beam, then, the NTN network side obtains the above mapping relationship from the gateway, and determines the TN neighbor corresponding to the coverage area of each NTN satellite beam based on the mapping relationship, in this way, the NTN network side carries the neighbor relation corresponding to the beam in the system message when sending the system message through the beam, which can accurately configure the neighbor relation corresponding to each beam and improve the communication service capability under the cooperation of the satellite and the ground.

[0078] The embodiment of the present application provides a kind of information transmission method, applied to gateway, the gateway can at least obtain the relevant information of NTN cell and TN cell, the NTN cell changes over time, as shown in Figure 2 The method comprises:

[0079] Step 201: determine first information, the first information represents the mapping relationship between each first area in the NTN cell and the TN cell, and the first area represents the coverage area of the NTN satellite beam;

[0080] Step 202: determine second information using the first information, the second information represents the relevant information of the neighbor corresponding to each first area in the NTN cell after the first time, and the neighbor corresponding to the first area belongs to the TN cell, and the second information is used for cell reselection;

[0081] Step 203: send the second information to the NTN network device.

[0082] Here, in actual application, the gateway refers to a gateway device deployed between an NTN network device (such as an NTN base station (which can be specifically an NTN base station connected with a satellite gateway station) and the like) and a TN network device (such as a ground cellular base station and the like), that is, the gateway is connected with the NTN network device and the TN network device; the gateway is at least used for dynamically managing and controlling the mapping relationship between a TN cell (which can also be understood as a cell served by a TN, or a TN coverage area) and an NTN cell (which can also be understood as a cell served by an NTN, or an NTN coverage area); here, the gateway can also be referred to as a satellite-ground cooperative gateway, the NTN network device can be specifically one of a satellite ground gateway station and the like, and the TN network device can be specifically one of a ground cellular network base station and the like, and the embodiments of the present application do not make any limitation in this regard.

[0083] The TN cell can include one or more cells corresponding to TN network devices. The NTN cell refers to a ground range served by an NTN. In actual application, each TN network device provides network service to terminals located in the corresponding TN cell, and at the same time, the NTN network device provides network service to terminals (which can also be understood as terminals capable of accessing an NTN, or NTN terminals) located in the NTN cell through the beam of the NTN satellite (which can also be understood as the NTN network device controlling the NTN satellite transmitting beam); wherein the NTN satellite can simultaneously transmit one or more beams, and the number of beams actually transmitted by the NTN satellite can be set as needed, and the embodiments of the present application do not make any limitation in this regard. Here, in the embodiments of the present application, the coverage area (which can also be understood as the projection of the beam on the ground, or the coverage range of the beam and the like) corresponding to each NTN satellite beam is referred to as a first area, that is, each first area corresponds to an NTN satellite beam, representing the coverage area of the NTN satellite beam.

[0084] In actual application, the NTN satellite includes an NTN satellite operating in a sweeping mode (which can also be understood as in a sweeping mode NTN), at this time, the NTN cell changes (which can also be understood as constantly moving) over time. In the case that the NTN satellite operates in a sweeping mode, the working mode of the NTN satellite can be further divided into: a mode based on a hopping beam and a mode based on a fixed beam. Specifically, the mode based on a hopping beam refers to that the pointing direction (which can also be understood as the beam pointing) of the NTN satellite beam controlled by the NTN network device changes according to a hopping beam pattern, so as to serve different geographical areas in different time periods, wherein in each time period, the first area corresponding to the NTN satellite beam remains unchanged, and in different time periods, the first area corresponding to the NTN satellite beam can be different. At the same time, the mode based on a fixed beam refers to that the pointing direction of the NTN satellite beam is fixed, and accordingly, the first area corresponding to the NTN satellite beam sweeps over the ground as the NTN satellite moves, that is, the first area changes constantly over time. It can be seen that in the sweeping mode, whether the NTN satellite adopts the mode based on a hopping beam or the mode based on a fixed beam, the first area corresponding to the NTN satellite beam will change to some extent over time, therefore, the mode (including the mode based on a hopping beam or the mode based on a fixed beam) adopted by the NTN satellite in the embodiments of the present application is not limited.

[0085] In actual application, since the TN cell usually does not change, in the case that the first area changes over time, the TN cell adjacent to the first area can also change, that is, the neighboring cell corresponding to the first area can change over time. In this case, in order to realize accurate neighboring cell relationship configuration, the gateway can maintain the first information, that is, for each first area, determine the change of the TN cell adjacent to the first area (which can also be understood as dynamically maintaining the mapping relationship between the NTN cell and the TN cell intersecting or overlapping area); then, the gateway can determine which TN cell or TN cells are adjacent to each first area at any time according to the first information, that is, determine the neighboring cell relationship of any first area at any time; in this way, when the NTN network side needs to configure a neighboring cell to a certain first area at a certain time, the NTN network device can obtain the neighboring cell relationship of the first area at the time from the gateway, so as to perform neighboring cell configuration, so that the terminal located in the first area can accurately perform neighboring cell management and mobility management.

[0086] Specifically, in an embodiment, the determining the first information comprises:

[0087] The third information includes related information of the NTN cell, and the fourth information includes related information of the TN cell.

[0088] Here, in actual application, the third information can also be understood as NTN related service area information or NTN related service information, and the name of the third information is not limited in the embodiments of the present application. The gateway can determine the change of each first area in the NTN cell over time based on the third information, i.e., the change of the position information (such as geographical range, or center point coordinates and radius, etc.) of each first area. Specifically, in an embodiment, the third information can include one or more of the following (one or more can also be understood as at least one):

[0089] Ephemeris information of the NTN satellite, which can also be understood as satellite ephemeris information;

[0090] Dynamic beam pointing information of the NTN satellite, which can also be understood as satellite beam pointing information, and is at least used to represent the change of the satellite beam over time;

[0091] Dynamic range information of the NTN cell, which can also be understood as NTN cell information, and is at least used to represent the change of the NTN cell over time;

[0092] Dynamic range information of each first area in the NTN cell, which can also be understood as NTN cell beam coverage range information, and is at least used to represent the change of the geographical position of each first area in the NTN cell over time.

[0093] In actual application, the fourth information can also be understood as TN related service area information or TN related service information, and the name of the fourth information is not limited in the embodiments of the present application. The gateway can determine the position information of each TN cell based on the fourth information. Specifically, in an embodiment, the fourth information can include one or more of the following:

[0094] Identification information of one or more TN network devices, such as base station ID, etc.;

[0095] Position information of one or more TN network devices;

[0096] Related information of one or more TN cells, which can also be understood as cell information (such as cell position, or cell radius and center point, etc.) corresponding to each TN network device in one or more TN network devices.

[0097] In actual application, the gateway can dynamically maintain which TN cell or TN cells exist in intersection or overlap with each first area for each first area, and since the first area is associated with the NTN satellite beam, this process can also be understood as dynamically maintaining the beam level neighbor information.

[0098] Specifically, in an embodiment, the determining the first information by using the third information and the fourth information comprises:

[0099] For each first area in the NTN cell, the fifth information is determined by using the third information, the fifth information representing the first area; the sixth information is determined by using the fourth information and the fifth information, the sixth information representing a dynamic coverage range of a second area which has an overlap with the first area and the TN cell; a mapping relationship among the first area, the second area, and the TN cell is determined;

[0100] The first information is determined based on all the determined mapping relationships.

[0101] Here, in actual application, the second area can also be referred to as a satellite-ground overlap area, and the name of the second area is not limited in the embodiments of the present application.

[0102] In actual application, the gateway first determines, for each first area, a second area which has an overlap or intersection with the TN cell; then, the gateway determines one or more TN cells corresponding to the second area, thereby establishing a mapping relationship between the first area and the one or more TN cells (i.e., determining the one or more TN cells as the neighboring cells of the first area); finally, the gateway can take the mapping relationship corresponding to all the first areas as the first information, to realize beam-level neighboring cell relationship maintenance (which can also be understood as beam-level dynamic satellite-ground neighboring cell relationship maintenance).

[0103] In actual application, the NTN network device can perform neighboring cell configuration when delivering a system message related to cell reselection, to enable the terminal to perform neighboring cell management and mobility management, that is, the NTN network device can include (which can also be understood as carrying) neighboring cell configuration information in the delivered system message, to perform neighboring cell configuration. The system message related to cell reselection can include a system information block (SIB, System Information Block) message.

[0104] Specifically, to ensure the timeliness and accuracy of the neighboring cell relationship information received by the terminal when the neighboring cell configuration is received, the gateway can estimate a first time length from when the gateway sends the neighboring cell relationship to when the terminal receives the neighboring cell configuration information (i.e., receives the system message), and send the neighboring cell relationship after the first time length to the NTN network device.

[0105] Based on this, in an embodiment, the first time length is associated with at least a first time delay, a second time delay, and a third time delay, the first time delay representing a communication time delay between the gateway and the NTN network device, the second time delay representing a processing time delay of the NTN network device for generating a system message for cell reselection based on the second information, and the third time delay representing a communication time delay between the NTN network device and the terminal.

[0106] In actual application, the gateway can determine the neighboring cell relationship of each first area in the NTN cell after the first time length based on the maintained first information, i.e., the second information.

[0107] After determining the second information, in step 203, the gateway sends the second information to the NTN network device. In this way, when the NTN network side sends a system message through a beam, the neighboring cell relationship corresponding to the beam can be accurately configured by carrying the neighboring cell relationship corresponding to the beam in the system message, thereby improving the communication service capability under the star-ground collaborative networking.

[0108] Specifically, the gateway can send the second information to the NTN network device through related signaling, i.e., the gateway sends related signaling to the NTN network device, and the related signaling contains (or can be understood as carrying) the second information.

[0109] In actual application, since the system message is periodically issued, the NTN network device needs to periodically obtain the neighboring cell relationship maintained by the gateway, i.e., the neighboring cell relationship corresponding to each period. In this case, after determining the first information, the gateway determines the second information for each period of issuing a system message and sends the second information to the NTN network device. That is, in an embodiment, the gateway can periodically determine the second information; and periodically send the second information to the NTN network device to ensure the timeliness and accuracy of the second message.

[0110] Correspondingly, the embodiment of the present application also provides an information transmission method applied to an NTN network device, as shown in the Figure 3 The method comprises the following steps:

[0111] Step 301: receiving second information sent by a gateway, the gateway being capable of obtaining at least related information of an NTN cell and a TN cell, the NTN cell changing over time, the second information representing related information of a neighboring cell corresponding to each first area in the NTN cell after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighboring cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0112] Step 302: using the second information, determining, for each first region, seventh information representing the neighboring cell corresponding to the first region; broadcasting a system message through the NTN satellite beam corresponding to the first region, the system message containing the seventh information, the system message being used for cell reselection.

[0113] Here, in actual application, the gateway can dynamically maintain, for each first region, which TN cell or cells exist in intersection or overlap with the first region, since the first region is associated with an NTN satellite beam, this process can also be understood as dynamically maintaining the beam-level neighboring cell information. At the same time, in order to ensure the timeliness and accuracy of the neighboring cell relationship information received by the terminal when the neighboring cell configuration is received, the gateway can estimate a first time duration from the time when the gateway sends the neighboring cell relationship to the time when the terminal receives the neighboring cell configuration information (i.e., receives the system message), and send the second information (i.e., the neighboring cell relationship after the first time duration) to the NTN network device. Accordingly, in step 301, the NTN network device receives the second information.

[0114] After receiving the second information, the NTN network device can use the second information to determine the TN neighboring cell corresponding to each first region, i.e., determine the seventh information. Here, since the first region corresponds to one NTN satellite beam, the neighboring cell corresponding to the first region can also be understood as the neighboring cell corresponding to the NTN satellite beam. Specifically, in an embodiment, the neighboring cell corresponding to the first region can include one or more of the following:

[0115] The neighboring cell with the same frequency as the first region, also known as the same frequency neighboring cell;

[0116] The neighboring cell with a different frequency from the first region, also known as the different frequency neighboring cell;

[0117] The neighboring cell with a different network type from the first region, also known as the different system neighboring cell.

[0118] Here, in actual application, the NTN network device can represent the neighboring cell corresponding to the first region in the form of a list, which is not limited in the embodiments of the present application.

[0119] After determining the seventh information for each first region, the NTN network device broadcasts a system message containing the seventh information through the NTN satellite beam corresponding to the first region, i.e., performs neighbor cell configuration for the terminal located in the first region, so that the terminal located in the first region can use the seventh information for neighbor cell management and mobility management. Each NTN satellite beam can be identified by a synchronization signal index and / or a direction angle. The synchronization signal can be a synchronization signal block (Synchronization Signal Block, SSB). The synchronization signal index can be an SSB index (SSB Index).

[0120] In actual application, the NTN network device can use an existing system message (such as one or more of SIB3, SIB4, and SIB5) to send the seventh information to the terminal, that is, in an embodiment, the system message includes an existing system message.

[0121] Of course, the NTN network device can also introduce a new system message, so as to use the new system message to send the seventh information to the terminal, that is, in an embodiment, the system message includes a newly defined system message. The newly defined system message can be used to indicate beam-level dedicated broadcast information. In the case where the system message includes a newly defined system message, the NTN network device can broadcast a SIB1 message, and include related configuration information for receiving the newly defined system message in the SIB1 message, so that the terminal can receive the newly defined system message.

[0122] Embodiments of the present application also provide an information transmission method, as shown in the method includes: Figure 4

[0123] Step 401: The gateway determines the first information. The gateway can obtain at least the related information of the NTN cell and the TN cell. The NTN cell changes over time. The first information represents the mapping relationship between each first region in the NTN cell and the TN cell. The first region represents the coverage area of the NTN satellite beam.

[0124] Step 402: The gateway determines the second information using the first information. The second information represents the related information of the neighbor cell corresponding to each first region in the NTN cell after a first time period. The neighbor cell corresponding to the first region belongs to the TN cell. The second information is used for cell reselection.

[0125] Step 403: The gateway sends the second information to the NTN network device.

[0126] Step 404: The network device receives the second information sent by the gateway.​

[0127] Step 405: The network device determines, for each first area, seventh information representing a neighboring cell corresponding to the first area, using the second information; and broadcasts a system message through the NTN satellite beam corresponding to the first area, the system message containing the seventh information, the system message being used for cell reselection.

[0128] Here, it should be noted that the specific processing procedures of the gateway and the network device have been described in detail above, and will not be described here.

[0129] The information transmission method provided by the embodiments of the present application includes the following steps: a gateway determines first information, the gateway being capable of obtaining at least related information of a non-terrestrial network NTN cell and a terrestrial network TN cell, the NTN cell changing with time, the first information representing a mapping relationship between each first area in the NTN cell and the TN cell, the first area representing a coverage area of an NTN satellite beam; second information is determined using the first information, the second information representing related information of a neighboring cell corresponding to each first area in the NTN cell after a first time length, the neighboring cell corresponding to the first area belonging to the TN cell, the second information being used for cell reselection; the second information is sent to an NTN network device; meanwhile, the NTN network device receives the second information sent by the gateway; seventh information is determined for each first area using the second information, the seventh information representing a neighboring cell corresponding to the first area; and a system message is broadcast through an NTN satellite beam corresponding to the first area, the system message containing the seventh information, the system message being used for cell reselection. In the case where the NTN cell changes with time, the gateway maintains the mapping relationship between the coverage area of each beam in the NTN cell (i.e., the first area described above) and the TN cell that intersects or overlaps with the coverage area of the beam (i.e., the first information described above), and then the NTN network side (i.e., the NTN network device described above) obtains the mapping relationship from the gateway and determines the TN neighboring cell corresponding to the coverage area of each NTN satellite beam (i.e., the neighboring cell corresponding to the first area described above) based on the mapping relationship. In this way, when the NTN network side broadcasts a system message through a beam, the neighboring cell relationship corresponding to the beam is carried in the system message, which can accurately configure the neighboring cell relationship corresponding to each beam and improve the communication service capability under the scenario of star-ground collaborative networking.

[0130] The present application will be further described in detail below in combination with application examples.

[0131] The present application example proposes a terminal idle state cell reselection method for a beam flat scanning mode under a star-ground collaborative networking scenario, as shown in Figure 5 The present application example proposes a terminal idle state cell reselection method for a beam flat scanning mode under a star-ground collaborative networking scenario, as shown in

[0132] Step 501: The satellite-ground cooperative gateway dynamically maintains NTN service area information and TN service area information, and a mapping relationship of a satellite-ground overlapping area (i.e., the first information described above); and then step 502 is performed.

[0133] Here, in actual application, for the satellite-ground overlapping area, the NTN service area information includes one or more of satellite ephemeris information, satellite beam pointing information, cell information of an NTN network service area, and beam coverage information in the cell; and the TN service area information includes one or more of a base station (i.e., a TN network device, such as a ground cellular network base station) identifier (such as a base station ID), base station location information, and cell information corresponding to the base station.

[0134] Step 502: The satellite-ground cooperative gateway maintains a beam-level dynamic satellite-ground neighbor area relationship mapping (i.e., the first information described above); and then step 503 is performed.

[0135] Specifically, the satellite-ground cooperative gateway determines (such as calculates) a beam coverage area (a first area) under each beam pointing of a satellite based on NTN service area information (such as satellite ephemeris information and satellite beam pointing information), and then determines a neighbor area relationship mapping of the beam coverage area based on the coverage area of each beam.

[0136] Step 503: The satellite-ground cooperative gateway pushes a satellite-ground neighbor area mapping relationship table (i.e., the second information described above) after a period of time (i.e., the first time length, which can be expressed in English as T_offset) to an NTN base station (i.e., the NTN network device described above) based on the maintained beam-level dynamic satellite-ground neighbor area relationship mapping; wherein,

[0137] The satellite-ground neighbor area mapping relationship table contains neighbor area information corresponding to each beam coverage area, i.e., a beam-level neighbor area relationship. The period of time depends on a time delay of the satellite-ground cooperative gateway transmitting signaling carrying the satellite-ground neighbor area mapping relationship table to the NTN base station, a time delay of the NTN base station generating a system message using the satellite-ground neighbor area mapping relationship table (i.e., the second time delay), and a time delay of the NTN base station issuing the system message to a terminal receiving the system message (i.e., the third time delay, which is related to a satellite-ground transmission distance).

[0138] Here, in actual application, the satellite-ground cooperative gateway can periodically push the satellite-ground neighbor area mapping relationship table to the NTN base station according to a period of issuing a cell reselection related system message (such as one or more of SIB3, SIB4, SIB5, etc.) by the NTN.

[0139] In actual application, a computing and decision module can be introduced into the satellite-ground cooperative gateway to perform steps 501 to 503.

[0140] Step 504: After receiving the satellite-ground neighbor cell mapping table from the satellite-ground cooperative gateway, the NTN base station performs beam-level cell reselection related system message distribution with a beam as a processing unit. The system message contains a neighbor cell list corresponding to the beam, that is, the TN neighbor cell of the beam coverage area corresponding to the beam in the satellite-ground neighbor cell mapping table. The neighbor cell list contains one or more of a same-frequency neighbor cell list, a different-frequency neighbor cell list, and a different-system neighbor cell list.

[0141] Here, in actual application, the NTN base station can use a direction angle pointed by the beam and / or a beam corresponding SSB identifier (such as SSB index) as the identifier of the beam to perform beam-level differentiated configuration distribution.

[0142] In actual application, the NTN base station can distribute the system message in one of the following two ways:

[0143] 1) Differentiation in a traditional SIB message (which can also be understood as an existing SIB message). Specifically, the NTN base station further divides the SIB indication information into traditional cell-oriented common broadcast information and beam-level-oriented dedicated broadcast information. The beam-level-oriented dedicated broadcast information contains the neighbor cell list.

[0144] 2) Introduction of a new SIB message. The new SIB message is specially used to indicate the beam-level-oriented dedicated broadcast information. The beam-level-oriented dedicated broadcast information contains the neighbor cell list. Meanwhile, the NTN base station indicates configuration information related to receiving the new SIB message in SIB1.

[0145] The scheme proposed in the application example is that the satellite-ground cooperative gateway determines the neighbor cell mapping relationship (that is, the satellite-ground neighbor cell mapping table) after the transmission time of the neighbor cell information in advance, and sends the neighbor cell mapping relationship to the NTN base station. The NTN base station performs corresponding cell reselection system message distribution with a beam of a satellite as a minimum processing unit based on the received neighbor cell mapping relationship, so that a user can obtain satellite-ground neighbor cell information in the beam to perform a cell reselection process. At the same time, the scheme can weaken the frequent cell intra-frequency beam adjustment and complex neighbor cell mapping relationship caused by the flat scanning mode, and facilitate satellite and ground neighbor cell configuration.

[0146] To implement the method provided by the gateway side in the embodiment of the application, the embodiment of the application further provides an information transmission device arranged on a gateway. The gateway can at least acquire related information of an NTN cell and a TN cell. The NTN cell changes with time, such as shown in the following table. Figure 6 The device comprises:

[0147] The determination unit 601 is configured to determine first information, the first information representing a mapping relationship between each first area in an NTN cell and the TN cell, the first area representing a coverage area of an NTN satellite beam; and determine second information using the first information, the second information representing related information of a corresponding neighboring cell of each first area in the NTN cell after a first time length, the corresponding neighboring cell of the first area belonging to the TN cell, the second information being used for cell reselection.

[0148] The sending unit 602 is configured to send the second information to an NTN network device.

[0149] In an embodiment, the determination unit 601 is specifically configured to:

[0150] determine the second information periodically;

[0151] The sending unit 602 is specifically configured to:

[0152] periodically send the second information to the NTN network device.

[0153] In an embodiment, the determination unit 601 is specifically configured to:

[0154] determine the first information using third information and fourth information, the third information including related information of the NTN cell, and the fourth information including related information of the TN cell.

[0155] In an embodiment, the determination unit 601 is specifically configured to:

[0156] for each first area in the NTN cell, determine fifth information using the third information, the fifth information representing the first area; determine sixth information using the fourth information and the fifth information, the sixth information representing a dynamic coverage range of a second area in which the first area and the TN cell exist; and determine a mapping relationship between the first area, the second area, and the TN cell.

[0157] determine the first information based on all the determined mapping relationships.

[0158] In actual application, the determination unit 601 can be implemented by a processor in an information transmission apparatus, and the sending unit 602 can be implemented by a communication interface in the information transmission apparatus.

[0159] To implement the method on the network device side, the embodiments of the present application further provide an information transmission apparatus arranged on an NTN network device, as shown in Figure 7 The apparatus includes:

[0160] The receiving unit 701 is configured to receive second information sent by a gateway, the gateway being capable of acquiring at least relevant information of NTN cells and TN cells, the NTN cells changing over time, the second information representing relevant information of a neighbor cell corresponding to each first area in the NTN cell after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighbor cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0161] The processing unit 702 is configured to determine, by using the second information, for each first area, seventh information representing a neighbor cell corresponding to the first area, and broadcast a system message by using an NTN satellite beam corresponding to the first area, the system message containing the seventh information, and the system message being used for cell reselection.

[0162] In actual application, the receiving unit 701 can be implemented by a communication interface in an information transmission device, and the processing unit 702 can be implemented by a processor in the information transmission device in combination with the communication interface.

[0163] It should be noted that the information transmission device provided in the above embodiments is only taken as an example in the division of the above program units, and in actual application, the above processing can be completed by different program units according to needs, that is, the internal structure of the device is divided into different program units to complete all or part of the above processing. In addition, the information transmission device and the information transmission method provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0164] Based on the hardware implementation of the above program modules, and in order to implement the method on the gateway side in the embodiments of the present application, the embodiments of the present application further provide a gateway, which is capable of acquiring at least relevant information of NTN cells and TN cells, the NTN cells changing over time, as shown in the following Figure 8 The gateway 800 includes:

[0165] The first communication interface 801 is capable of performing information interaction with a network device.

[0166] The first processor 802 is connected with the first communication interface 801 to realize information interaction with the network device, and is configured to execute a computer program to perform the method provided in one or more technical solutions on the gateway side.

[0167] The first memory 803 stores the computer program.

[0168] Specifically, the first processor 802 is configured to:

[0169] determining first information, the first information representing a mapping relationship between each first region in an NTN cell and the TN cell, the first region representing a coverage area of an NTN satellite beam; and determining, by using the first information, second information representing related information of a neighbor cell corresponding to each first region in the NTN cell after a first time length, the neighbor cell corresponding to the first region belonging to the TN cell, the second information being used for cell reselection;

[0170] The first communication interface 801 is configured to:

[0171] The first communication interface 801 is configured to:

[0172] In an embodiment, the first processor 802 is specifically configured to:

[0173] periodically determine the second information;

[0174] The first communication interface 801 is configured to:

[0175] periodically transmit the second information to the NTN network device.

[0176] In an embodiment, the first processor 802 is specifically configured to:

[0177] For each first region in the NTN cell, the third information is used to determine fifth information representing the first region; the fourth information and the fifth information are used to determine sixth information representing a dynamic coverage range of a second region overlapping with the first region and the TN cell; and a mapping relationship between the first region, the second region, and the TN cell is determined.

[0178] The first information is determined based on all the determined mapping relationships.

[0179] It should be noted that the specific processing process of the first processor 802 and the first communication interface 801 can be understood with reference to the above method.

[0180] Of course, in actual application, various components in the gateway 800 are coupled together through the bus system 804. It can be understood that the bus system 804 is used to realize the connection and communication between the components. In addition to including a data bus, the bus system 804 also includes a power bus, a control bus, and a status signal bus. However, for the purpose of clear illustration, all kinds of buses are marked as the bus system 804 in the Figure 8

[0181] The first memory 803 in the embodiment of the application is used to store various types of data to support the operation of the gateway 800. Examples of these data include: any computer program used for operation on the gateway 800.​

[0182] The method disclosed by the embodiments of the present application can be applied to the first processor 802 or implemented by the first processor 802. The first processor 802 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by integrated logic circuits of hardware in the first processor 802 or instructions in the form of software. The first processor 802 described above can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 802 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the steps of the method, or the hardware and software modules in the decoding processor can be combined to execute the steps of the method. The software module can be located in a storage medium, which is located in the first memory 803, and the first processor 802 reads the information in the first memory 803 to combine the hardware to complete the steps of the method.

[0183] In the exemplary embodiments, the gateway 800 can be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, micro controllers (MCUs), microprocessors (Microprocessors), or other electronic elements, for executing the foregoing methods.

[0184] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a network device, as shown in the following Figure 9 The network device 900 includes:

[0185] The second communication interface 901 can interact with the gateway to exchange information.

[0186] The second processor 902 is connected with the second communication interface 901 to realize information interaction with the gateway, and is used to run a computer program to execute the method provided by one or more technical solutions of the network device.

[0187] The second memory 903 stores the computer program.

[0188] Specifically, the second communication interface 901 is configured to:

[0189] receive second information sent by a gateway, the gateway being capable of obtaining at least related information of NTN cells and TN cells, the NTN cells changing over time, the second information representing related information of a neighbor cell corresponding to each first area in the NTN cell after a first time length, the first area representing a coverage area of an NTN satellite beam, the neighbor cell corresponding to the first area belonging to the TN cell, and the second information being used for cell reselection.

[0190] The second processor 902 is configured to:

[0191] determine, by using the second information, seventh information representing the neighbor cell corresponding to each first area, and broadcast, by using the second communication interface 901, a system message through an NTN satellite beam corresponding to the first area, the system message containing the seventh information, and the system message being used for cell reselection.

[0192] It should be noted that the specific processing process of the second processor 902 and the second communication interface 901 can be understood with reference to the above method.

[0193] Of course, in actual application, various components in the network device 900 are coupled together through a bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between the components. The bus system 904 includes not only a data bus, but also a power bus, a control bus and a status signal bus. However, in order to clearly illustrate, all kinds of buses are marked as the bus system 904 in Figure 9 .

[0194] The second memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the network device 900. Examples of these data include any computer programs used to operate on the network device 900.

[0195] The method disclosed by the embodiments of the present application can be applied to the second processor 902 or implemented by the second processor 902. The second processor 902 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by integrated logic circuit of hardware in the second processor 902 or instructions in the form of software. The second processor 902 described above can be a general processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 902 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the steps of the foregoing method, or the hardware and software modules in the decoding processor can be combined to execute the steps of the foregoing method. The software module can be located in the storage medium, and the storage medium is located in the second memory 903. The second processor 902 reads the information in the second memory 903 and combines the hardware to complete the steps of the foregoing method.

[0196] In the exemplary embodiments, the network device 900 can be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general processors, controllers, MCUs, microprocessors, or other electronic elements for executing the foregoing method.

[0197] It can be understood that the memory (the first memory 803, the second memory 903) of the embodiments of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. The non-volatile memory can 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 ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM). The magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example but not limitation, many forms of RAM can be used, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memory described in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0198] In the example embodiments, the embodiments of the present application further provide a storage medium, specifically a computer readable storage medium, for example, a first memory 803 storing a computer program executable by the first processor 802 of the gateway 800 to complete the steps of the aforementioned gateway side method, and a second memory 903 storing a computer program executable by the second processor 902 of the network device 900 to complete the steps of the aforementioned network device side method. The computer readable storage medium can be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0199] In the example embodiments, the embodiments of the present application further provide a computer program product including a computer program executable by the first processor 802 of the gateway 800 to complete the steps of the aforementioned gateway side method, or executable by the second processor 902 of the network device 900 to complete the steps of the aforementioned network device side method.

[0200] To implement the method provided by the embodiments of the present application, the embodiments of the present application further provide an information transmission system, as shown in the following figure. Figure 10 The system includes a gateway 1001 and a network device 1002, the network device 1002 is an NTN network device, the gateway 1001 can at least acquire relevant information of an NTN cell and a TN cell, and the NTN cell changes with time.

[0201] Here, it should be noted that the specific processing procedures of the gateway 1001 and the network device 1002 have been described in detail above, and will not be repeated here.

[0202] It should be noted that "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0203] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0204] The above is only a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. An information transmission method, characterized in that, Applied to a gateway, the gateway is capable of obtaining at least relevant information about non-terrestrial network (NTN) cells and terrestrial network (TN) cells, wherein the NTN cells vary over time, and the method includes: First information is determined, which represents the mapping relationship between each first region in the NTN cell and the TN cell, and the first region represents the coverage area of ​​the NTN satellite beam; Using the first information, determine the second information. The second information represents the relevant information of the neighboring cells corresponding to each first area in the NTN cell after the first time period. The neighboring cells corresponding to the first area belong to the TN cell. The second information is used for cell reselection. Send the second information to the NTN network device.

2. The method according to claim 1, characterized in that, The second information is periodically determined; the second information is periodically sent to the NTN network device.

3. The method according to claim 1, characterized in that, The first duration is associated with at least a first delay, a second delay, and a third delay. The first delay represents the communication delay between the gateway and the NTN network device. The second delay represents the processing delay of the NTN network device in generating system messages for cell reselection based on the second information. The third delay represents the communication delay between the NTN network device and the terminal.

4. The method according to any one of claims 1 to 3, characterized in that, The determination of the first information includes: The first information is determined using the third and fourth information, wherein the third information includes relevant information of the NTN cell and the fourth information includes relevant information of the TN cell.

5. The method according to claim 4, characterized in that, The third information includes one or more of the following: The ephemeris information of the NTN satellite; The dynamic beam pointing information of the NTN satellite; The dynamic range information of the NTN cell; The dynamic range information of each first region in the NTN cell.

6. The method according to claim 4, characterized in that, The fourth piece of information includes one or more of the following: Identification information of one or more TN network devices; Location information of one or more TN network devices; Information related to one or more TN cells.

7. The method according to claim 4, characterized in that, The step of determining the first information using the third and fourth information includes: For each first region in the NTN cell, the third information is used to determine the fifth information, which represents the first region; the fourth and fifth information are used to determine the sixth information, which represents the dynamic coverage range of the second region where the first region overlaps with the TN cell; and the mapping relationship between the first region, the second region, and the TN cell is determined. Based on all the determined mapping relationships, the first information is determined.

8. An information transmission method, characterized in that, Applied to NTN network devices, the method includes: The second information sent by the receiving gateway is at least able to obtain relevant information about NTN cells and TN cells. The NTN cells change over time. The second information represents the relevant information of neighboring cells corresponding to each first area in the NTN cells after a first duration. The first area represents the coverage area of ​​the NTN satellite beam. The neighboring cells corresponding to the first area belong to the TN cells. The second information is used for cell reselection. Using the second information, for each first region, seventh information is determined, the seventh information representing the neighboring cells corresponding to the first region; a system message is broadcast via the NTN satellite beam corresponding to the first region, the system message containing the seventh information, the system message being used for cell reselection.

9. The method according to claim 8, characterized in that, The neighboring regions corresponding to the first region include one or more of the following: Neighboring cells with the same frequency as the first region; Neighboring regions with frequencies different from those corresponding to the first region; Neighboring cells with a different network type than the first region.

10. The method according to claim 8 or 9, characterized in that, The system message may include a newly defined system message, or it may include an existing system message.

11. An information transmission device, characterized in that, A gateway is configured to obtain at least information about NTN and TN cells, wherein the NTN cells change over time, including: The determining unit is configured to determine first information, which represents the mapping relationship between each first area in the NTN cell and the TN cell, and the first area represents the coverage area of ​​the NTN satellite beam; and to determine second information using the first information, which represents the relevant information of the neighboring cells corresponding to each first area in the NTN cell after a first duration, wherein the neighboring cells corresponding to the first area belong to the TN cell, and the second information is used for cell reselection; The sending unit is used to send the second information to the NTN network device.

12. An information transmission device, characterized in that, Configurations on NTN network devices include: The receiving unit is used to receive second information sent by the gateway. The gateway is able to obtain at least the relevant information of NTN cells and TN cells. The NTN cells change over time. The second information represents the relevant information of the neighboring cells corresponding to each first area in the NTN cells after a first duration. The first area represents the coverage area of ​​the NTN satellite beam. The neighboring cells corresponding to the first area belong to the TN cells. The second information is used for cell reselection. The processing unit is configured to use the second information to determine seventh information for each first region, the seventh information representing the neighboring cells corresponding to the first region; and to broadcast system messages via the NTN satellite beam corresponding to the first region, the system messages containing the seventh information, the system messages being used for cell reselection.

13. A gateway, characterized in that, The gateway is capable of obtaining at least relevant information about NTN and TN cells, where the NTN cells change over time, including: A first processor is configured to determine first information, wherein the first information represents the mapping relationship between each first region in the NTN cell and the TN cell, and the first region represents the coverage area of ​​the NTN satellite beam; and to determine second information using the first information, wherein the second information represents the relevant information of the neighboring cells corresponding to each first region in the NTN cell after a first duration, and the neighboring cells corresponding to the first region belong to the TN cell, and the second information is used for cell reselection; The first communication interface is used to send the second information to the NTN network device.

14. A network device, characterized in that, The network device is an NTN network device, comprising: a second processor and a second communication interface; wherein, The second communication interface is used to receive second information sent by the gateway. The gateway is able to obtain at least the relevant information of NTN cells and TN cells. The NTN cells change over time. The second information represents the relevant information of the neighboring cells corresponding to each first area in the NTN cells after a first duration. The first area represents the coverage area of ​​the NTN satellite beam. The neighboring cells corresponding to the first area belong to the TN cells. The second information is used for cell reselection. The second processor is configured to use the second information to determine seventh information for each first region, the seventh information representing the neighboring cells corresponding to the first region; and, in conjunction with the second communication interface, broadcast system messages via the NTN satellite beam corresponding to the first region, the system messages containing the seventh information, the system messages being used for cell reselection.

15. A gateway, characterized in that, include: A first processor and a first memory for storing computer programs capable of running on the processor. Wherein, when the first processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 7.

16. A network device, characterized in that, include: A second processor and a second memory for storing computer programs that can run on the processor. Wherein, when the second processor is used to run the computer program, it performs the steps of the method according to any one of claims 8 to 10.

17. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7, or the steps of the method according to any one of claims 8 to 10.

18. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7, or the steps of the method according to any one of claims 8 to 10.

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