Information transmission method and apparatus, and related devices and storage medium

Abstract

Disclosed in the present application are an information transmission method and apparatus, and a terminal, a network device and a storage medium. The method comprises: a terminal receiving at least one piece of the following information sent by a network side: first information, the first information being used for indicating a beam position grouping rule of a non-terrestrial network (NTN) coverage area; second information, the second information including related information of a synchronization signal block (SSB), and the related information of the SSB being associated with the beam position grouping rule of the NTN coverage area; and third information, the third information including related information of a random access channel (RACH) resource, and the related information of the RACH resource being associated with the beam position grouping rule of the NTN coverage area, wherein the beam position grouping rule is used for determining a plurality of beam position groups within the NTN coverage area, and each beam position group includes one or more beam positions.

Description

Information transmission method, device, related equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410069793.6 and application date of January 17, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of wireless communications, and in particular to an information transmission method, apparatus, related equipment, and storage medium. Background Art

[0004] Discussions on non-terrestrial networks (NTNs) often assume that a satellite covers the entire area with a single wide beam. However, there is no effective solution for optimizing coverage when satellites provide services using narrow beams (i.e., spot beams). Summary of the Invention

[0005] To solve related technical problems, the embodiments of the present application provide an information transmission method, apparatus, related equipment and storage medium.

[0006] The technical solution of the embodiment of the present application is implemented as follows:

[0007] The present invention provides an information transmission method, which is applied to a terminal and includes:

[0008] Receive at least one of the following information sent by the network side:

[0009] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0010] Second information, the second information including information related to a synchronization signal block (SSB), wherein the information related to the SSB is associated with a wave position grouping rule of the NTN coverage area;

[0011] The third information includes information related to random access channel (RACH) resources, and the information related to the RACH resources is associated with the wave grouping rule of the NTN coverage area; wherein,

[0012] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0013] In the above solution, the first information includes a first step length and a first boundary point on the boundary of the NTN coverage area. The waveband grouping rule includes taking the first boundary point as a starting point and determining a plurality of first sub-areas with the first step length as a radius within the NTN coverage area. A waveband group includes one or more wavebands within a first sub-area.

[0014] or,

[0015] The first information includes at least a second step length, the waveband grouping rule includes determining a plurality of second sub-areas within the NTN coverage area, the plurality of second sub-areas being formed by dividing a first diameter and a second diameter of the NTN coverage area based on the second step length, the first diameter and the second diameter being cross-distributed within the NTN coverage area, and a waveband group including one or more wavebands within a second sub-area;

[0016] or,

[0017] The first information includes a first angle or includes the first angle and reference point information. The waveband grouping rule includes determining a plurality of sector-shaped third sub-areas within the NTN coverage area. The plurality of sector-shaped third sub-areas are formed by dividing the NTN coverage area by using the first angle based on the center of the NTN coverage area or the reference point information. A waveband group includes one or more wavebands within a third sub-area.

[0018] or,

[0019] The first information includes vertex information of each fourth sub-area in a plurality of polygonal fourth sub-areas in the NTN coverage area, and the wave position grouping rule includes determining a plurality of fourth sub-areas based on the vertex information of each fourth sub-area, and a wave position group includes one or more wave positions in a fourth sub-area.

[0020] In the above solution, the second information includes at least one of the following:

[0021] The SSB period associated with the wave group in which the terminal is located;

[0022] The SSB period or SSB identifier corresponding to the wave bit grouping rule;

[0023] Fourth information, where the fourth information is used to indicate that the SSB period corresponding to the waveband grouping rule changes with changes in parameters included in the waveband grouping rule;

[0024] The fifth information includes a parameter for determining an SSB period associated with each wave bit group.

[0025] In the above solution, the fifth information includes at least one of the following:

[0026] A first parameter, wherein the first parameter represents the total number of wave positions within the NTN coverage area;

[0027] A second parameter associated with each waveband group, wherein the second parameter represents the number of SSBs associated with the waveband group;

[0028] A third parameter is associated with each wavelet group, and the third parameter represents the total number of wavelets contained in the wavelet group.

[0029] In the above solution, the third information includes a first threshold value, the first threshold value is associated with a first distance, and the first distance is the distance between the terminal and a beam position center reference point of the beam position group where the terminal is located; the method further includes:

[0030] When the first distance is greater than the first threshold, determining an SSB associated with the waveband group where the terminal is located;

[0031] A target random access preamble is determined based on the SSB associated with the wave bit group where the terminal is located, and random access is performed using the target preamble.

[0032] In the above solution, the third information further includes sixth information, where the sixth information represents an association relationship between the SSB associated with the waveband group where the terminal is located and the preamble; and determining the target preamble based on the SSB associated with the waveband group where the terminal is located includes:

[0033] The target preamble is determined by using the sixth information and the SSB associated with the waveband group where the terminal is located.

[0034] In the above solution, the third information further includes seventh information, where the seventh information represents a mapping association period between the SSB and the RACH resource associated with the wave group in which the terminal is located, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period; the method further includes:

[0035] Determining an SSB period associated with the wave bit group in which the terminal is located;

[0036] Random access is performed in the mapping association period after the SSB period. If random access is unsuccessful in the mapping association period, the random access process is suspended and random access is continued in the next mapping association period.

[0037] In the above solution, the method further includes:

[0038] Receive at least one of the updated first information, the updated second information, and the updated third information sent by the network side.

[0039] In the above solution, the method further includes:

[0040] Sending eighth information to the network side, where the eighth information is used to update the waveband grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0041] location information of the terminal;

[0042] Wavelength information of the terminal;

[0043] The wave group information where the terminal is located.

[0044] In the above solution, the method further includes:

[0045] When the probability of random access failure is greater than a second threshold, and / or when the time required to complete a complete random access procedure is greater than a third threshold, sending a first request to the network side, where the first request is used to request updating the third information;

[0046] Receive the updated third information sent by the network side.

[0047] The present application also provides an information transmission method, which is applied to a network device and includes:

[0048] Send at least one of the following information to the terminals within the NTN coverage area:

[0049] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0050] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0051] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0052] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0053] In the above solution, the first information includes a first step length and a first boundary point on the boundary of the NTN coverage area. The waveband grouping rule includes taking the first boundary point as a starting point and determining a plurality of first sub-areas with the first step length as a radius within the NTN coverage area. A waveband group includes one or more wavebands within a first sub-area.

[0054] or,

[0055] The first information includes at least a second step length, the waveband grouping rule includes determining a plurality of second sub-areas within the NTN coverage area, the plurality of second sub-areas being formed by dividing a first diameter and a second diameter of the NTN coverage area based on the second step length, the first diameter and the second diameter being cross-distributed within the NTN coverage area, and a waveband group including one or more wavebands within a second sub-area;

[0056] or,

[0057] The first information includes a first angle or includes the first angle and reference point information. The waveband grouping rule includes determining a plurality of sector-shaped third sub-areas within the NTN coverage area. The plurality of sector-shaped third sub-areas are formed by dividing the NTN coverage area by using the first angle based on the center of the NTN coverage area or the reference point information. A waveband group includes one or more wavebands within a third sub-area.

[0058] or,

[0059] The first information includes vertex information of each fourth sub-area in a plurality of polygonal fourth sub-areas in the NTN coverage area, and the wave position grouping rule includes determining a plurality of fourth sub-areas based on the vertex information of each fourth sub-area, and a wave position group includes one or more wave positions in a fourth sub-area.

[0060] In the above solution, the second information includes at least one of the following:

[0061] The SSB period associated with the wave group in which the terminal is located;

[0062] The SSB period or SSB identifier corresponding to the wave bit grouping rule;

[0063] Fourth information, where the fourth information is used to indicate that the SSB period corresponding to the waveband grouping rule changes with changes in parameters included in the waveband grouping rule;

[0064] The fifth information includes a parameter for determining an SSB period associated with each wave bit group.

[0065] In the above solution, the fifth information includes at least one of the following:

[0066] A first parameter, wherein the first parameter represents the total number of wave positions within the NTN coverage area;

[0067] A second parameter associated with each waveband group, wherein the second parameter represents the number of SSBs associated with the waveband group;

[0068] A third parameter is associated with each wavelet group, and the third parameter represents the total number of wavelets contained in the wavelet group.

[0069] In the above solution, the method further includes:

[0070] The second information is determined based on an SSB allocation rule of the multiple beam bit groups, where the SSB allocation rule includes one of the following:

[0071] All SSBs poll all wave positions of all wave position groups as a whole;

[0072] The first SSB polls all the beam bits of all the beam bit groups as a whole, and the second SSB polls all the beam bits of the first beam bit group, where the second SSB includes all SSBs in all SSBs except the first SSB;

[0073] Each of the plurality of beam-bit groups is associated with one or more fixed SSBs.

[0074] In the above solution, the third information includes a first threshold value, the first threshold value is associated with a first distance, and the first distance is the distance between the terminal and a wave position center reference point of the wave position group where the terminal is located.

[0075] In the above solution, the third information further includes sixth information, and the sixth information represents the association relationship between the SSB associated with the wave group where the terminal is located and the random access preamble.

[0076] In the above scheme, the third information further includes seventh information, where the seventh information represents a mapping association period between the SSB and RACH resources associated with the wave group where the terminal is located, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period.

[0077] In the above solution, the method further includes:

[0078] Determine the number of terminals that access the network in each waveband group;

[0079] Based on the number of terminals accessing the network in each waveband group, updating the waveband grouping rules of the NTN coverage area so that the range of each waveband group expands as the number of terminals accessing the network decreases;

[0080] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0081] At least one of the updated first information, the updated second information, and the updated third information is sent to the terminal.

[0082] In the above solution, the method further includes:

[0083] receiving eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0084] location information of the terminal;

[0085] Wavelength information of the terminal;

[0086] Wave group information where the terminal is located;

[0087] Based on the eighth information, updating the waveband grouping rule of the NTN coverage area so that the range of each waveband group expands as the number of terminals in the waveband group decreases;

[0088] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0089] At least one of the updated first information, the updated second information, and the updated third information is sent to the terminal.

[0090] In the above solution, the method further includes:

[0091] receiving a first request sent by the terminal, where the first request is used to request updating the third information;

[0092] Based on the first request, the third information is updated, and the updated third information is sent to the terminal.

[0093] The present application also provides an information transmission device, including:

[0094] The first receiving unit is configured to receive at least one of the following information sent by the network side:

[0095] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0096] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0097] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0098] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0099] The present application also provides an information transmission device, including:

[0100] The second sending unit is configured to send at least one of the following information to the terminal within the NTN coverage area:

[0101] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0102] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0103] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0104] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0105] The embodiment of the present application further provides a terminal, comprising: a first communication interface and a first processor; wherein,

[0106] The first communication interface is configured to receive at least one of the following information sent by the network side:

[0107] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0108] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0109] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0110] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0111] The embodiment of the present application further provides a network device, comprising: a second communication interface and a second processor; wherein,

[0112] The second communication interface is configured to send at least one of the following information to the terminal within the NTN coverage area:

[0113] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0114] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0115] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0116] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0117] An embodiment of the present application further provides a terminal, comprising: a first processor and a first memory configured to store a computer program that can be run on the processor,

[0118] Wherein, the first processor is configured to execute the steps of any of the above-mentioned terminal-side methods when running the computer program.

[0119] An embodiment of the present application further provides a network device, comprising: a second processor and a second memory configured to store a computer program that can be run on the processor,

[0120] The second processor is configured to execute the steps of any one of the above-mentioned methods on the network device side when running the computer program.

[0121] An embodiment of the present application also provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-mentioned methods on the terminal side; or implements the steps of any of the above-mentioned methods on the network device side.

[0122] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of any of the above-mentioned methods on the terminal side; or implements the steps of any of the above-mentioned methods on the network device side.

[0123] The information transmission method, apparatus, related equipment, and storage medium provided by the embodiments of the present application, wherein a network side sends at least one of first information, second information, and third information to a terminal within an NTN coverage area, and the terminal receives at least one of the first information, second information, and third information sent by the network side; wherein the first information is used to indicate a waveband grouping rule for the NTN coverage area; the second information includes SSB-related information, and the SSB-related information is associated with the waveband grouping rule for the NTN coverage area; the third information includes RACH resource-related information, and the RACH resource-related information is associated with the waveband grouping rule for the NTN coverage area; the waveband grouping rule is used to determine multiple waveband groups within the NTN coverage area, each waveband group including one or more wavebands. The solution provided in the embodiments of the present application is aimed at the situation where satellites use spot beams to provide services, that is, for the NTN spot beam scenario, and proposes a waveband grouping rule for determining multiple waveband groups within the NTN coverage area. Each waveband group contains one or more wavebands. The network side configures the waveband grouping rule, the relevant information of the SSB associated with the waveband grouping rule, and at least one of the relevant information of the RACH resource associated with the waveband grouping rule for the terminal within the NTN coverage area. In this way, the terminal can subsequently use the information configured on the network side to improve the efficiency of random access, thereby achieving coverage optimization in the NTN spot beam scenario, that is, it can effectively improve (i.e., enhance) the coverage performance of the NTN spot beam scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0124] FIG1 is a schematic diagram of an NTN spot beam scenario according to an embodiment of the present application;

[0125] FIG2 is a schematic diagram of the wave grouping rules according to an embodiment of the present application;

[0126] FIG3 is a schematic diagram of a flow chart of an information transmission method according to an embodiment of the present application;

[0127] FIG4 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

[0128] FIG5 is a schematic structural diagram of another information transmission device according to an embodiment of the present application;

[0129] FIG6 is a schematic diagram of the terminal structure according to an embodiment of the present application;

[0130] FIG7 is a schematic diagram of the network device structure according to an embodiment of the present application;

[0131] FIG8 is a schematic diagram of the structure of the information transmission system according to an embodiment of the present application. DETAILED DESCRIPTION

[0132] The present application will be described in further detail below with reference to the accompanying drawings and embodiments.

[0133] In practical applications, as shown in Figure 1, satellites can use spot beams to provide services. The advantage of spot beams is that they are narrower and more focused. However, given the large coverage area of ​​satellites and the current maximum number of SSBs of 64, NTN spot beam scenarios may require multiple scans to achieve full coverage. Furthermore, related technologies require coverage optimization for NTN spot beams and / or beam hopping scenarios.

[0134] Based on this, in various embodiments of the present application, for the situation where the satellite provides services using spot beams, that is, for the NTN spot beam scenario, a waveband grouping rule for determining multiple waveband groups within the NTN coverage area is proposed, each waveband group contains one or more wavebands, and the network side configures the waveband grouping rule, the SSB related information associated with the waveband grouping rule, and at least one of the RACH resource related information associated with the waveband grouping rule for the terminal within the NTN coverage area. In this way, the terminal can subsequently use the information configured on the network side to improve the efficiency of random access, thereby realizing coverage optimization in the NTN point beam scenario, that is, it can effectively improve (i.e., enhance) the coverage performance of the NTN point beam scenario.

[0135] Specifically, for the NTN spot beam scenario shown in FIG1 , an embodiment of the present application provides an information transmission method, which is applied to a terminal. The method includes:

[0136] Receive at least one of the following information sent by the network side:

[0137] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0138] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0139] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with a wave position grouping rule of the NTN coverage area.

[0140] The beam position grouping rule is used to determine a plurality of (ie, at least two) beam position groups within the NTN coverage area, and each beam position group includes one or more beam positions (ie, includes at least one beam position).

[0141] Here, it should be noted that, in various embodiments of the present application, the multiple refers to at least two, for example, the multiple wave position groups refer to at least two wave position groups; the one or more refers to at least one, for example, the one or more wave positions refer to at least one wave position.

[0142] In practical applications, the terminal may also be referred to as user equipment (UE) or a user. It is understood that the terminal is located within the NTN coverage area. Furthermore, the terminal may specifically receive at least one of the first information, the second information, and the third information sent by a network device on the network side. The network device may include a base station (e.g., a gNB).

[0143] In actual application, the specific content of the waveband grouping rule can be preset according to requirements (such as network deployment requirements, etc.), and the first information can include relevant information of the waveband grouping rule.

[0144] In one embodiment, the first information may include a first step length and a first boundary point on the boundary of the NTN coverage area, and the waveband grouping rule may include taking the first boundary point as the starting point and determining multiple first sub-areas with the first step length as the radius within the NTN coverage area, and a waveband group includes one or more wavebands within a first sub-area.

[0145] In actual application, the specific size of the first step length and the specific location of the first boundary point can be pre-set according to requirements (such as network deployment requirements, etc.). Exemplarily, the first step length, the first boundary point, and the first sub-area can be as shown in Figure 2a. It can be understood that the first sub-area is a circular area.

[0146] In one embodiment, the first information may include at least a second step length, and the waveband grouping rule may include determining multiple second sub-areas within the NTN coverage area, wherein the multiple second sub-areas are formed by dividing the first diameter and the second diameter of the NTN coverage area based on the second step length, respectively, and the first diameter and the second diameter are cross-distributed within the NTN coverage area, and a waveband group includes one or more wavebands within a second sub-area.

[0147] In practical applications, the first information may also include diameter information of the NTN coverage area, such as endpoint information of the first diameter and / or the second diameter. Furthermore, the specific size of the second step length and the specific location of the first diameter and / or the second diameter may be pre-set based on requirements (e.g., network deployment requirements). For example, the second step length, the first diameter, the second diameter, and the second sub-area may be as shown in FIG2b . It is understood that the second sub-area is a square area or an irregularly shaped area.

[0148] In one embodiment, the first information may include a first angle or the first angle and reference point information, and the waveband grouping rule may include determining multiple sector-shaped third sub-areas within the NTN coverage area, wherein the multiple sector-shaped third sub-areas are formed by dividing the NTN coverage area based on the center of the NTN coverage area or the reference point information using the first angle, and a waveband group includes one or more wavebands within a third sub-area.

[0149] In actual application, the reference point information is used to determine a reference point, and may specifically include the location information of the reference point. The specific size of the first angle and the specific location of the reference point corresponding to the reference point information can be pre-set according to requirements (such as network deployment requirements, etc.). Exemplarily, as shown in Figure 2c, when the first information only includes the first angle, the multiple third sub-areas of the sector are formed based on the center of the NTN coverage area and the first angle is used to divide the NTN coverage area. In addition, it can be understood that when the first information includes the first angle and reference point information, the multiple third sub-areas of the sector are formed based on the reference point corresponding to the reference point information and the first angle is used to divide the NTN coverage area.

[0150] In one embodiment, the first information may include vertex information of each fourth sub-area in a plurality of polygonal fourth sub-areas in the NTN coverage area, and the waveband grouping rule may include determining a plurality of fourth sub-areas based on the vertex information of each fourth sub-area, and a waveband group includes one or more wavebands in a fourth sub-area.

[0151] In actual application, the specific shape and vertex positions of the fourth sub-region can be pre-set according to requirements (such as network deployment requirements, etc.). For example, the shape of the fourth sub-region can be a triangle, a quadrilateral, a pentagon, or a hexagon, and the shape of each fourth sub-region can be the same or different. When the shape of the fourth sub-region is a hexagon and the shape of each fourth sub-region is the same, the fourth sub-region can be as shown in Figure 2d.

[0152] In one embodiment, the second information may include at least one of the following:

[0153] The SSB period associated with the wave group in which the terminal is located;

[0154] The SSB period or SSB identifier (such as an index, etc.) corresponding to the wave bit grouping rule;

[0155] Fourth information, where the fourth information is used to indicate that the SSB period corresponding to the waveband grouping rule changes with changes in parameters included in the waveband grouping rule;

[0156] The fifth information includes a parameter for determining an SSB period associated with each wave bit group.

[0157] In actual application, the waveband group to which the terminal belongs can be understood as the waveband group to which the terminal corresponds or is associated, and the terminal can determine the waveband group to which it belongs based on the waveband grouping rule indicated by the first information. Specifically, when the terminal is located in a sub-area corresponding to a waveband group (i.e., the first sub-area, the second sub-area, the third sub-area, or the fourth sub-area), it can be determined that the terminal is in the waveband group, that is, it is determined that the terminal corresponds to / is associated with the waveband group.

[0158] In actual application, when the second information includes the SSB period associated with the wave group to which the terminal is located, the network side can explicitly provide the SSB period information (such as 20 milliseconds (ms)) directly in each wave group through multicast; in other words, the network side can send the second information to each terminal in the wave group through multicast for each wave group, and the terminal can receive the second information sent by the network side through multicast for each wave group.

[0159] In actual application, the SSB period or SSB identifier corresponding to the wave bit grouping rule can be understood as the SSB period mapping information of the wave bit grouping rule, that is, the network side can determine the SSB period mapping information of different wave bit grouping rules, and then determine and send the corresponding SSB period mapping information to the terminal based on the wave bit grouping rule indicated to the terminal (that is, the first information).

[0160] In actual application, the fourth information can be understood as SSB period change information corresponding to different parameter sizes of different wave grouping rules, and the specific content of the fourth information can be set according to requirements (such as network deployment requirements, etc.). Exemplarily, for the wave grouping rule shown in Figure 2a, that is, when the first information includes the first step length and the first boundary point, the larger the first step length, the longer the SSB period corresponding to the wave grouping rule can be, that is, the fourth information can be used to indicate that the SSB period corresponding to the wave grouping rule increases with the increase of the first step length; the fourth information can specifically include a reference SSB period and an SSB period change rate information, and the terminal can calculate the SSB period corresponding to the wave grouping rule based on the first step length, the reference SSB period and the SSB period change rate information.

[0161] In one embodiment, the parameter used to determine the SSB period associated with each beam bit group may include at least one of the following (that is, the fifth information may include at least one of the following):

[0162] A first parameter, wherein the first parameter represents the total number of wave positions within the NTN coverage area;

[0163] A second parameter associated with each waveband group, wherein the second parameter represents the number of SSBs associated with the waveband group;

[0164] A third parameter is associated with each wavelet group, and the third parameter represents the total number of wavelets contained in the wavelet group.

[0165] Among them, in actual application, assuming that the default SSB period is n milliseconds (ms) (this parameter can be configured by the network side to the terminal, or pre-set on the terminal), the number of SSBs associated with a wave bit group (that is, the second parameter) is a, and the total number of wave bits contained in the wave bit group (that is, the third parameter) is b, then the terminal can calculate the SSB period associated with the wave bit group as n*b / a milliseconds (ms). Here, the SSB associated with the wave bit group can be understood as the SSB of the service within the wave bit group. In addition, the network side can explicitly provide the total number of wave bits contained in each wave bit group, that is, send the fifth information containing the third parameter; or, when the fifth information does not contain the third parameter, the terminal can calculate the third parameter based on the first parameter and the wave bit grouping rule indicated by the first information.

[0166] In actual application, the network side may determine the second information based on the SSB allocation rules of the multiple wave bit groups, and the SSB allocation rules may be pre-set according to requirements (such as network deployment requirements, etc.). Exemplarily, the SSB allocation rules may include one of the following:

[0167] All SSBs poll all the beam positions of all beam position groups as a whole, that is, all SSBs poll all the beam positions of all beam position groups in sequence according to a specific order of all beam position groups (such as geographical distribution order, etc.);

[0168] Some SSBs are routinely polled, and other SSBs are flexibly polled on demand. In other words, the first SSB polls all the wave bits of all the wave bit groups as a whole, and the second SSB polls all the wave bits of the first wave bit group. The second SSB includes all SSBs in all SSBs except the first SSB. The first wave bit group can be associated with some emergency services (such as emergency call services, etc.) or set according to needs (such as network deployment needs, etc.). For example, when the total number of all SSBs is 64, 32 first SSBs can poll all the wave bits of all the wave bit groups as a whole, and 32 second SSBs can poll all the wave bits of the first wave bit group associated with the emergency call service.

[0169] One or more fixed SSBs are allocated to each of the plurality of beam bit groups, that is, one or more fixed SSBs are associated with each of the plurality of beam bit groups.

[0170] In practical applications, considering that the number of SSBs associated with each waveband group is limited, that is, each waveband can only perform uplink and / or downlink transmission when it is polled. Therefore, the embodiment of the present application cannot select RACH resources according to the traditional SSB-based Reference Signal Received Power (RSRP) threshold (rsrp-ThresholdSSB) method; in other words, the embodiment of the present application needs to redesign the selection and configuration of RACH resources based on the waveband grouping rules, that is, the network side needs to send the third information to the terminals within the NTN coverage area.

[0171] In one embodiment, the third information may include a first threshold, where the first threshold is associated with a first distance, where the first distance is the distance between the terminal and a beam center reference point of the beam group in which the terminal is located. The method may further include:

[0172] When the first distance is greater than the first threshold, determining an SSB associated with the waveband group where the terminal is located;

[0173] A target preamble is determined based on the SSB associated with the waveband group where the terminal is located, and random access is performed using the target preamble.

[0174] Among them, in actual application, the specific size of the first threshold can be determined by the network side according to requirements (such as network deployment requirements, etc.). After the terminal receives the third information, it can ignore the rsrp-ThresholdSSB configured by the network side, and select RACH resources according to the distance between its own position and the wave position center reference point, that is, when the first distance is greater than the first threshold, the target preamble is selected from the Preamble index (which can be expressed as ra-PreambleIndex in English) associated with the SSB associated with the wave position group where the terminal is located. Here, the association relationship between different SSBs and different preambles can be determined by the terminal according to local configuration, or it can be dynamically configured to the terminal by the network side.

[0175] Based on this, in one embodiment, the third information may further include sixth information, where the sixth information represents an association relationship between the SSB associated with the wave group in which the terminal is located and the preamble (that is, an association relationship between different SSBs and different preambles); accordingly, determining the target preamble based on the SSB associated with the wave group in which the terminal is located may include:

[0176] The target preamble is determined by using the sixth information and the SSB associated with the waveband group where the terminal is located.

[0177] In actual application, the network side may also dynamically configure the terminal with an association period (which may be expressed in English as association period) t (referred to as the seventh information in the subsequent description) for mapping the SSB to a physical random access channel (PRACH) occasion. The association period t may represent the length of time that the SSB provides service in each waveband. At the same time, the time domain resources of the PRACH occasion configured by the network side for the terminal need to be less than or equal to t, that is, the duration corresponding to the time domain resources of the RACH resources needs to be less than or equal to t. In this way, after the terminal determines the SSB polling period p (i.e., the SSB period associated with the waveband group to which the terminal belongs), it can only attempt to initiate random access within the SSB polling period p and within a continuous time period of t after each SSB polling period p. If random access is unsuccessful within the time period t, the terminal may not discard the configuration of the corresponding PARCH resource and suspend the current random access process, but wait until the next SSB polling period p to continue attempting random access.

[0178] Based on this, in one embodiment, the third information may further include seventh information, where the seventh information represents a mapping association period between the SSB associated with the wave group in which the terminal is located and the RACH resource, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period; the method may further include:

[0179] Determining an SSB period associated with the wave bit group in which the terminal is located;

[0180] Random access is performed in the mapping association period after the SSB period. If random access is unsuccessful in the mapping association period, the random access process is suspended and random access is continued in the next mapping association period.

[0181] Among them, in actual application, it can be seen from the above description that the seventh information represents the mapping association period between the SSB and RACH resources associated with the wave group where the terminal is located. It can also be understood that the seventh information represents the mapping association period t of the SSB associated with the wave group where the terminal is located to the PRACH occasion, or it can be understood that the seventh information represents the time length t that the SSB period associated with the wave group where the terminal is located provides service for each wave group included in the wave group where the terminal is located.

[0182] In actual application, the network side can adjust (i.e., update) the waveband grouping rules according to the number of terminals that actually access the network in each initial waveband group; wherein, the network side can determine the number of terminals that actually access the network in each initial waveband group based on how many terminals are accessed on the SSB allocated to each initial waveband group; in addition, the network side can adjust the waveband grouping rules with the initial waveband group as the granularity (which can be expressed as per waveband group). When the number of terminals that actually access the network in the initial waveband group is smaller, the granularity of the waveband group is increased accordingly (which can be understood as expanding the range of the sub-area corresponding to the waveband group) to increase the number of terminals covered by the waveband group.

[0183] Specifically, the network side may determine the number of terminals accessing the network within each waveband group, and based on the number of terminals accessing the network within each waveband group, update the waveband grouping rules of the NTN coverage area so that the range of each waveband group expands as the number of terminals accessing the network decreases. Updating the waveband grouping rules of the NTN coverage area may include adjusting (i.e., updating) parameters included in the waveband grouping rules, such as adjusting the step size granularity included in the waveband grouping rule shown in FIG2a (i.e., adjusting the size of the first step size), adjusting the diameter division granularity included in the waveband grouping rule shown in FIG2b (i.e., adjusting the size of the second step size), adjusting the angle granularity included in the waveband grouping rule shown in FIG2c (i.e., adjusting the size of the first angle), or adjusting the vertex information included in the waveband grouping rule shown in FIG2d. After updating the waveband grouping rules, the network side may update the first information based on the updated waveband grouping rules, and update the second information and third information based on the updated first information. Furthermore, the network side may send at least one of the updated first information, the updated second information, and the updated third information to the terminal.

[0184] Based on this, in one embodiment, the method may further include:

[0185] Receive at least one of the updated first information, the updated second information, and the updated third information sent by the network side.

[0186] Among them, in actual application, when the network side updates the second information and the third information based on the updated first information, it can also update the SSB allocation rule based on the updated first information, that is, update the SSB allocation rule according to the updated wave grouping rule; then update the second information in combination with the updated wave grouping rule and the updated SSB allocation rule, and use the updated wave grouping rule, the updated SSB allocation rule, and the updated second information to update the third information.

[0187] Specifically, for the SSB allocation rules in which a part of SSBs are routinely polled and another part of SSBs are dynamically polled on demand (i.e., the first SSB polls all wave bits of all wave bit groups as a whole, and the second SSB polls all wave bits of the first wave bit group), the network side can adjust (i.e., update) the allocation of routine polling SSBs (i.e., the first SSB) and on-demand dynamic polling SSBs (i.e., the second SSB) according to the updated wave bit grouping rules; exemplarily, if the total number of wave bit groups corresponding to the updated wave bit grouping rules becomes smaller, the network side can correspondingly reduce the number of routine polling SSBs and increase the number of on-demand dynamic polling SSBs.

[0188] For the SSB allocation rule of allocating one or more fixed SSBs to each of the multiple waveband groups, the network side can adjust (i.e., update) the number of SSBs allocated to each waveband group according to the updated waveband grouping rule; exemplarily, if the total number of waveband groups corresponding to the updated waveband grouping rule becomes smaller, the network side can correspondingly increase the number of SSBs allocated to each waveband group.

[0189] In actual application, the terminal may provide auxiliary information (which may be referred to as eighth information in subsequent descriptions) for adjusting (ie updating) the waveband grouping rule, such as at least one of location information, waveband information, and waveband group information.

[0190] Based on this, in one embodiment, the method may further include:

[0191] Sending eighth information to the network side, where the eighth information is used to update the waveband grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0192] location information of the terminal;

[0193] Wavelength information of the terminal;

[0194] The wave group information where the terminal is located.

[0195] In actual application, the location information may include precise location information (such as longitude and latitude information) or rough location information (assuming that the precise location information is M bits (M is an integer greater than 0), the first N bits (N is an integer greater than 0, and N is less than M) can be taken as rough location information). After receiving the eighth information, the network side can update the waveband grouping rules of the NTN coverage area based on the eighth information, that is, update the waveband grouping rules of the NTN coverage area based on the eighth information of one or more terminals in the NTN coverage area, so that the range of each waveband group expands as the number of terminals in the waveband group decreases; thereafter, the network side can update the first information based on the updated waveband grouping rules, and update the second information and the third information based on the updated first information; and the network side can send at least one of the updated first information, the updated second information and the updated third information to the terminal (that is, one or more terminals in the NTN coverage area).

[0196] In one embodiment, the method may further include:

[0197] When the probability of random access failure is greater than a second threshold, and / or when the time required to complete a complete random access procedure is greater than a third threshold, sending a first request to the network side, where the first request is used to request updating the third information;

[0198] Receive the updated third information sent by the network side.

[0199] In actual application, the specific size of the second threshold and / or the third threshold can be configured by the network side to the terminal according to requirements (such as network deployment requirements, etc.), or can be pre-set on the terminal according to requirements (such as network deployment requirements, etc.). It can be understood that regardless of whether the network side updates the wave bit grouping rule, that is, regardless of whether the terminal receives at least one of the updated first information, the updated second information and the updated third information, the terminal can request the network side to update the third information as needed (that is, when the probability of random access failure is greater than the second threshold, and / or when the time required to complete a complete random access process is greater than the third threshold). In addition, after the network side receives the first request, the specific method of updating the third information based on the first request can be determined according to requirements (such as network deployment requirements, etc.); illustratively, the network side can lengthen or shorten the interval between adjacent PRACH resources.

[0200] Accordingly, an embodiment of the present application further provides an information transmission method, which is applied to a network device (such as a base station, etc.), including:

[0201] Send at least one of the following information to the terminals within the NTN coverage area:

[0202] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0203] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0204] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0205] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0206] In actual application, the terminal within the NTN coverage area may include one or more terminals within the NTN coverage area.

[0207] In one embodiment, the method may further include:

[0208] The second information is determined based on an SSB allocation rule of the multiple beam bit groups, where the SSB allocation rule includes one of the following:

[0209] All SSBs poll all wave positions of all wave position groups as a whole;

[0210] The first SSB polls all the beam bits of all the beam bit groups as a whole, and the second SSB polls all the beam bits of the first beam bit group, where the second SSB includes all SSBs in all SSBs except the first SSB;

[0211] Each of the plurality of beam-bit groups is associated with one or more fixed SSBs.

[0212] In one embodiment, the method may further include:

[0213] Determine the number of terminals that access the network in each waveband group;

[0214] Based on the number of terminals accessing the network in each waveband group, updating the waveband grouping rules of the NTN coverage area so that the range of each waveband group expands as the number of terminals accessing the network decreases;

[0215] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0216] At least one of the updated first information, the updated second information, and the updated third information is sent to the terminal.

[0217] In one embodiment, the method may further include:

[0218] receiving eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0219] location information of the terminal;

[0220] Wavelength information of the terminal;

[0221] Wave group information where the terminal is located;

[0222] Based on the eighth information, updating the waveband grouping rule of the NTN coverage area so that the range of each waveband group expands as the number of terminals in the waveband group decreases;

[0223] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0224] At least one of the updated first information, the updated second information, and the updated third information is sent to the terminal.

[0225] In one embodiment, the method may further include:

[0226] receiving a first request sent by the terminal, where the first request is used to request updating the third information;

[0227] Based on the first request, the third information is updated, and the updated third information is sent to the terminal.

[0228] Here, it should be noted that the specific processing process of the network device has been described in detail above (ie the specific processing process on the network side), and will not be repeated here.

[0229] Accordingly, an embodiment of the present application further provides an information transmission method, as shown in FIG3 , which includes:

[0230] Step 301: The network device sends at least one of the first information, the second information and the third information to the terminal within the NTN coverage area;

[0231] Step 302: The terminal receives at least one of the first information, the second information, and the third information sent by the network device;

[0232] The first information is used to indicate the waveband grouping rules of the NTN coverage area; the second information includes relevant information of the SSB, and the relevant information of the SSB is associated with the waveband grouping rules of the NTN coverage area; the third information includes relevant information of the RACH resource, and the relevant information of the RACH resource is associated with the waveband grouping rules of the NTN coverage area; the waveband grouping rules are used to determine multiple waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0233] In an information transmission method provided by an embodiment of the present application, a network side sends at least one of first information, second information, and third information to a terminal within an NTN coverage area, and the terminal receives at least one of the first information, second information, and third information sent by the network side; wherein the first information is used to indicate a waveband grouping rule for the NTN coverage area; the second information includes SSB-related information, and the SSB-related information is associated with the waveband grouping rule for the NTN coverage area; the third information includes RACH resource-related information, and the RACH resource-related information is associated with the waveband grouping rule for the NTN coverage area; the waveband grouping rule is used to determine multiple waveband groups within the NTN coverage area, each waveband group including one or more wavebands. The solution provided in the embodiments of the present application is aimed at the situation where satellites use spot beams to provide services, that is, for the NTN spot beam scenario, and proposes a waveband grouping rule for determining multiple waveband groups within the NTN coverage area. Each waveband group contains one or more wavebands. The network side configures the waveband grouping rule, the relevant information of the SSB associated with the waveband grouping rule, and at least one of the relevant information of the RACH resource associated with the waveband grouping rule for the terminal within the NTN coverage area. In this way, the terminal can subsequently use the information configured on the network side to improve the efficiency of random access, thereby achieving coverage optimization in the NTN spot beam scenario, that is, it can effectively improve (i.e., enhance) the coverage performance of the NTN spot beam scenario.

[0234] In order to implement the terminal-side method of the embodiment of the present application, the embodiment of the present application further provides an information transmission device, which is provided on the terminal, as shown in FIG4 , and includes:

[0235] The first receiving unit 401 is configured to receive at least one of the following information sent by the network side:

[0236] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0237] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0238] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0239] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0240] In one embodiment, the third information includes a first threshold value, the first threshold value is associated with a first distance, and the first distance is a distance between the terminal and a beam position center reference point of a beam position group where the terminal is located;

[0241] Accordingly, as shown in FIG4 , the apparatus may further include:

[0242] The random access unit 402 is configured as follows:

[0243] When the first distance is greater than the first threshold, determining an SSB associated with the waveband group where the terminal is located;

[0244] A target preamble is determined based on the SSB associated with the waveband group where the terminal is located, and random access is performed using the target preamble.

[0245] In one embodiment, the third information further includes sixth information, where the sixth information represents an association relationship between an SSB associated with the wave group where the terminal is located and a preamble;

[0246] Correspondingly, the random access unit 402 is further configured to determine the target preamble by using the sixth information and the SSB associated with the waveband group where the terminal is located.

[0247] In one embodiment, the third information further includes seventh information, where the seventh information represents a mapping association period between the SSB associated with the wave group in which the terminal is located and the RACH resource, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period;

[0248] Accordingly, the random access unit 402 is further configured to:

[0249] Determining an SSB period associated with the wave bit group in which the terminal is located;

[0250] Random access is performed in the mapping association period after the SSB period. If random access is unsuccessful in the mapping association period, the random access process is suspended and random access is continued in the next mapping association period.

[0251] In one embodiment, the first receiving unit 401 is further configured to receive at least one of the updated first information, the updated second information, and the updated third information sent by the network side.

[0252] In one embodiment, as shown in FIG4 , the apparatus may further include:

[0253] The first sending unit 403 is configured to send eighth information to the network side, where the eighth information is used to update the waveband grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0254] location information of the terminal;

[0255] Wavelength information of the terminal;

[0256] The wave group information where the terminal is located.

[0257] In one embodiment, the first sending unit 403 is further configured to send a first request to the network side when the probability of random access failure is greater than a second threshold and / or when the time length for completing a complete random access procedure is greater than a third threshold, wherein the first request is used to request updating the third information;

[0258] Correspondingly, the first receiving unit 401 is further configured to receive the updated third information sent by the network side.

[0259] In actual application, the first receiving unit 401 and the first sending unit 403 can be implemented by a communication interface in the information transmission device; the random access unit 402 can be implemented by a processor in the information transmission device in combination with the communication interface.

[0260] In order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application further provides an information transmission device, which is provided on the network device, as shown in FIG5 , and includes:

[0261] The second sending unit 501 is configured to send at least one of the following information to the terminal within the NTN coverage area:

[0262] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0263] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0264] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0265] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0266] In one embodiment, as shown in FIG5 , the device may further include:

[0267] The allocating unit 502 is configured to determine the second information based on an SSB allocation rule of the multiple beam bit groups, where the SSB allocation rule includes one of the following:

[0268] All SSBs poll all wave positions of all wave position groups as a whole;

[0269] The first SSB polls all the beam bits of all the beam bit groups as a whole, and the second SSB polls all the beam bits of the first beam bit group, where the second SSB includes all SSBs in all SSBs except the first SSB;

[0270] Each of the plurality of beam-bit groups is associated with one or more fixed SSBs.

[0271] In one embodiment, as shown in FIG5 , the apparatus may further include:

[0272] The update unit 503 is configured as follows:

[0273] Determine the number of terminals that access the network in each waveband group;

[0274] Based on the number of terminals accessing the network in each waveband group, updating the waveband grouping rules of the NTN coverage area so that the range of each waveband group expands as the number of terminals accessing the network decreases;

[0275] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0276] Correspondingly, the second sending unit 501 is further configured to send at least one of the updated first information, the updated second information and the updated third information to the terminal.

[0277] In one embodiment, as shown in FIG5 , the apparatus may further include:

[0278] The second receiving unit 504 is configured to receive eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0279] location information of the terminal;

[0280] Wavelength information of the terminal;

[0281] Wave group information where the terminal is located;

[0282] Accordingly, the updating unit 503 is further configured to:

[0283] Based on the eighth information, updating the waveband grouping rule of the NTN coverage area so that the range of each waveband group expands as the number of terminals in the waveband group decreases;

[0284] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0285] The second sending unit 501 is further configured to send at least one of the updated first information, the updated second information and the updated third information to the terminal.

[0286] In one embodiment, the second receiving unit 504 is further configured to receive a first request sent by the terminal, where the first request is used to request to update the third information;

[0287] Accordingly, the updating unit 503 is further configured to update the third information based on the first request;

[0288] The second sending unit 501 is further configured to send updated third information to the terminal.

[0289] In actual application, the second sending unit 501 and the second receiving unit 504 can be implemented by a communication interface in the information transmission device; the allocation unit 502 and the updating unit 503 can be implemented by a processor in the information transmission device.

[0290] It should be noted that the information transmission device provided in the above embodiments is illustrated only by the division of the aforementioned program modules when performing information transmission. In actual applications, the aforementioned processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the aforementioned processing. In addition, the information transmission device provided in the above embodiments and the information transmission method embodiment are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0291] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application further provides a terminal, as shown in FIG6 , the terminal 600 includes:

[0292] The first communication interface 601 is capable of exchanging information with the network side and / or other terminals;

[0293] A first processor 602 is connected to the first communication interface 601 to implement information interaction with the network side and / or other terminals, and is configured to execute the methods provided by one or more technical solutions on the terminal side when running a computer program;

[0294] A first memory 603 , on which the computer program is stored.

[0295] Specifically, the first communication interface 601 is configured to receive at least one of the following information sent by the network side:

[0296] First information, where the first information is used to indicate a waveband grouping rule for an NTN coverage area;

[0297] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0298] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0299] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0300] In one embodiment, the third information includes a first threshold value, the first threshold value is associated with a first distance, and the first distance is a distance between the terminal 600 and a beam position center reference point of a beam position group where the terminal 600 is located;

[0301] Accordingly, the first processor 602 is configured to:

[0302] When the first distance is greater than the first threshold, determining an SSB associated with the waveband group where the terminal 600 is located;

[0303] Based on the SSB associated with the wave group where the terminal 600 is located, a target preamble is determined, and random access is performed using the target preamble.

[0304] In one embodiment, the third information further includes sixth information, where the sixth information represents an association relationship between the SSB associated with the wave group where the terminal 600 is located and the preamble;

[0305] Correspondingly, the first processor 602 is further configured to determine the target preamble by using the sixth information and the SSB associated with the waveband group where the terminal 600 is located.

[0306] In one embodiment, the third information further includes seventh information, where the seventh information represents a mapping association period between the SSB associated with the wave group in which the terminal 600 is located and the RACH resource, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period;

[0307] Accordingly, the first processor 602 is further configured to:

[0308] Determine an SSB period associated with the wave group in which the terminal 600 is located;

[0309] Random access is performed in the mapping association period after the SSB period. If random access is unsuccessful in the mapping association period, the random access process is suspended and random access is continued in the next mapping association period.

[0310] In one embodiment, the first communication interface 601 is further configured to receive at least one of the updated first information, the updated second information, and the updated third information sent by the network side.

[0311] In one embodiment, the first communication interface 601 is further configured to send eighth information to the network side, where the eighth information is used to update the waveband grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0312] The location information of the terminal 600;

[0313] Wavelength information of the terminal 600;

[0314] The information about the wave group where the terminal 600 is located.

[0315] In one embodiment, the first communication interface 601 is further configured to:

[0316] When the probability of random access failure is greater than a second threshold, and / or when the time required to complete a complete random access procedure is greater than a third threshold, sending a first request to the network side, where the first request is used to request updating the third information;

[0317] Receive the updated third information sent by the network side.

[0318] It should be noted that the specific processing process of the first communication interface 601 and the first processor 602 can be understood by referring to the above method, and will not be repeated here.

[0319] Of course, in actual use, the various components in terminal 600 are coupled together via bus system 604. It will be appreciated that bus system 604 is used to enable communication between these components. In addition to a data bus, bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in FIG6 , all of these buses are labeled as bus system 604.

[0320] The first memory 603 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 600. Examples of such data include: any computer program used to operate on the terminal 600.

[0321] The methods disclosed in the above embodiments of the present application can be applied to the first processor 602 or implemented by the first processor 602. The first processor 602 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in the first processor 602 or instructions in software form. The first processor 602 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 602 can implement or execute the various 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. The steps of the methods disclosed in the embodiments of the present application can be directly implemented as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium located in the first memory 603. The first processor 602 reads the information in the first memory 603 and completes the steps of the above method in combination with its hardware.

[0322] In an exemplary embodiment, the terminal 600 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, microcontrollers (MCUs), microprocessors, or other electronic components to execute the aforementioned method.

[0323] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application further provides a network device, as shown in FIG7 , the network device 700 includes:

[0324] The second communication interface 701 is capable of exchanging information with a terminal and / or other network devices;

[0325] A second processor 702 is connected to the second communication interface 701 to implement information interaction with a terminal and / or other network devices, and is configured to execute the methods provided by one or more technical solutions on the network device side when running a computer program;

[0326] The second memory 703 , on which the computer program is stored.

[0327] Specifically, the second communication interface 701 is configured to send at least one of the following information to the terminal within the NTN coverage area:

[0328] First information, where the first information is used to indicate a waveband grouping rule for the NTN coverage area;

[0329] Second information, the second information including SSB related information, the SSB related information being associated with a wave position grouping rule of the NTN coverage area;

[0330] The third information includes relevant information of RACH resources, and the relevant information of RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0331] The waveband grouping rule is used to determine a plurality of waveband groups within the NTN coverage area, each waveband group including one or more wavebands.

[0332] In one embodiment, the second processor 702 is configured to determine the second information based on an SSB allocation rule of the plurality of wave bit groups, where the SSB allocation rule includes one of the following:

[0333] All SSBs poll all wave positions of all wave position groups as a whole;

[0334] The first SSB polls all the beam bits of all the beam bit groups as a whole, and the second SSB polls all the beam bits of the first beam bit group, where the second SSB includes all SSBs in all SSBs except the first SSB;

[0335] Each of the plurality of beam-bit groups is associated with one or more fixed SSBs.

[0336] In one embodiment, the second processor 702 is further configured to:

[0337] Determine the number of terminals that access the network in each waveband group;

[0338] Based on the number of terminals accessing the network in each waveband group, updating the waveband grouping rules of the NTN coverage area so that the range of each waveband group expands as the number of terminals accessing the network decreases;

[0339] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0340] Correspondingly, the second communication interface 701 is further configured to send at least one of the updated first information, the updated second information and the updated third information to the terminal.

[0341] In one embodiment, the second communication interface 701 is further configured to receive eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0342] location information of the terminal;

[0343] Wavelength information of the terminal;

[0344] Wave group information where the terminal is located;

[0345] Accordingly, the second processor 702 is further configured to:

[0346] Based on the eighth information, updating the waveband grouping rule of the NTN coverage area so that the range of each waveband group expands as the number of terminals in the waveband group decreases;

[0347] Based on the updated wave grouping rule, the first information is updated, and based on the updated first information, the second information and the third information are updated;

[0348] The second communication interface 701 is further configured to send at least one of the updated first information, the updated second information and the updated third information to the terminal.

[0349] In one embodiment, the second communication interface 701 is further configured to:

[0350] receiving a first request sent by the terminal, where the first request is used to request updating the third information;

[0351] Based on the first request, the third information is updated, and the updated third information is sent to the terminal.

[0352] It should be noted that the specific processing process of the second communication interface 701 and the second processor 702 can be understood by referring to the above method, and will not be repeated here.

[0353] Of course, in actual use, the various components in network device 700 are coupled together via bus system 704. It will be appreciated that bus system 704 is used to implement connections and communications between these components. In addition to a data bus, bus system 704 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in FIG. 7 , all of these buses are labeled as bus system 704.

[0354] The second memory 703 in the embodiment of the present application is used to store various types of data to support the operation of the network device 700. Examples of such data include: any computer program used to operate on the network device 700.

[0355] The methods disclosed in the above embodiments of the present application can be applied to or implemented by the second processor 702. The second processor 702 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits or software instructions in the second processor 702. The second processor 702 can be a general-purpose processor, a DSP, or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The second processor 702 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium located in the second memory 703. The second processor 702 reads the information in the second memory 703 and, in conjunction with its hardware, completes the steps of the above method.

[0356] In an exemplary embodiment, the network device 700 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0357] It can be understood that the memory (first memory 603, second memory 703) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, 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 magnetic 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 magnetic disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, 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 (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0358] In order to implement the method provided in the embodiment of the present application, the embodiment of the present application further provides an information transmission system, as shown in FIG8 , which includes: a terminal 801 and a network device 802 .

[0359] Here, it should be noted that the specific processing procedures of the terminal 801 and the network device 802 have been described in detail above and will not be repeated here.

[0360] In an exemplary embodiment, the present application also provides a storage medium, namely, a computer storage medium, specifically, a computer-readable storage medium, which includes, for example, a first memory 603 storing a computer program. The computer program can be executed by the first processor 602 of the terminal 600 to complete the steps of any of the aforementioned terminal-side methods. Another example includes a second memory 703 storing a computer program. The computer program can be executed by the second processor 702 of the network device 700 to complete the steps of any of the aforementioned network device-side methods. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, optical disk, or CD-ROM.

[0361] In an exemplary embodiment, the embodiment of the present application also provides a computer program product, including a computer program, which can be executed by the first processor 602 of the terminal 600 to complete the steps described in any of the aforementioned terminal side methods; or, the computer program can be executed by the second processor 702 of the network device 700 to complete the steps described in any of the aforementioned network device side methods.

[0362] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0363] In addition, the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

[0364] The above description is merely a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application.

Claims

1. An information transmission method, applied to a terminal, includes: Receiving at least one of the following information sent by the network side: The first information, which is used to indicate the wave position grouping rule in the non-terrestrial network (NTN) coverage area; The second information, which contains information related to the synchronization signal block (SSB), and the information related to the SSB is associated with the wave position grouping rule in the NTN coverage area; The third information, which contains information related to the random access channel (RACH) resources, and the information related to the RACH resources is associated with the wave position grouping rule in the NTN coverage area; where The wave position grouping rule is used to determine multiple wave position groups in the NTN coverage area, and each wave position group contains one or more wave positions.

2. The method according to claim 1, wherein, The first information contains a first step length and a first boundary point on the boundary of the NTN coverage area, and the wave position grouping rule includes starting from the first boundary point and determining multiple first sub-regions with the first step length as the radius in the NTN coverage area, and one wave position group contains one or more wave positions in one first sub-region; Or, The first information contains at least a second step length, and the wave position grouping rule includes determining multiple second sub-regions in the NTN coverage area, and the multiple second sub-regions are formed by dividing the first diameter and the second diameter of the NTN coverage area respectively based on the second step length, and the first diameter and the second diameter are cross-distributed in a cross shape in the NTN coverage area, and one wave position group contains one or more wave positions in one second sub-region; Or, The first information contains a first angle or contains a first angle and reference point information, and the wave position grouping rule includes determining multiple fan-shaped third sub-regions in the NTN coverage area, and the multiple fan-shaped third sub-regions are formed by dividing the NTN coverage area using the first angle based on the center of the NTN coverage area or the reference point information, and one wave position group contains one or more wave positions in one third sub-region; Or, The first information contains the vertex information of each of the multiple polygon-shaped fourth sub-regions in the NTN coverage area, and the wave position grouping rule includes determining multiple fourth sub-regions based on the vertex information of each fourth sub-region, and one wave position group contains one or more wave positions in one fourth sub-region.

3. The method according to claim 1, wherein The second information contains at least one of the following: The SSB period associated with the wave position group where the terminal is located; The SSB period or SSB identifier corresponding to the wave position grouping rule; The fourth information, which is used to indicate that the SSB period corresponding to the wave position grouping rule changes with the change of the parameters included in the wave position grouping rule; The fifth information, which contains parameters for determining the SSB period associated with each wave position group.

4. The method according to claim 3, wherein The fifth information contains at least one of the following: The first parameter, which characterizes the total number of wave positions in the NTN coverage area; The second parameter associated with each wave position group, which characterizes the number of SSBs associated with the wave position group. The third parameter associated with each beam position group, where the third parameter characterizes the total number of beam positions included in the beam position group.

5. The method according to claim 1, wherein, The third information includes a first threshold, where the first threshold is associated with a first distance, and the first distance is the distance between the terminal and the beam position center reference point of the beam position group where the terminal is located; the method further includes: When the first distance is greater than the first threshold, determining the SSB associated with the beam position group where the terminal is located; Based on the SSB associated with the beam position group where the terminal is located, determining a target random access preamble (preamble), and using the target preamble to perform random access.

6. The method according to claim 5, wherein The third information further includes sixth information, where the sixth information characterizes the association relationship between the SSB and the preamble associated with the beam position group where the terminal is located; the determining the target preamble based on the SSB associated with the beam position group where the terminal is located includes: Using the sixth information and the SSB associated with the beam position group where the terminal is located to determine the target preamble.

7. The method according to claim 5, wherein The third information further includes seventh information, where the seventh information characterizes the mapping association period between the SSB and the RACH resource associated with the beam position group where the terminal is located, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period; the method further includes: Determining the SSB period associated with the beam position group where the terminal is located; Performing random access within the mapping association period after the SSB period. If the random access is not successful within the mapping association period, suspending the random access process and continuing the random access in the next mapping association period.

8. The method according to any one of claims 1 to 7, wherein, The method further includes: Receiving at least one of the updated first information, updated second information, and updated third information sent by the network side.

9. The method according to claim 8, wherein The method further includes: Sending eighth information to the network side, where the eighth information is used to update the beam position grouping rule of the NTN coverage area, and the eighth information includes at least one of the following: The location information of the terminal; The beam position information where the terminal is located; The beam position group information where the terminal is located.

10. The method according to any one of claims 1 to 7, wherein, The method further includes: When the probability of random access failure is greater than a second threshold, and / or when the duration of completing a full random access process is greater than a third threshold, sending a first request to the network side, where the first request is used to request an update of the third information; Receiving the updated third information sent by the network side.

11. An information transmission method, applied to a network device, includes: Sending at least one of the following information to a terminal within the NTN coverage area: First information, where the first information is used to indicate the beam position grouping rule of the NTN coverage area; Second information, where the second information includes relevant information of the SSB, and the relevant information of the SSB is associated with the beam position grouping rule of the NTN coverage area; Third information, where the third information includes relevant information of the RACH resource, and the relevant information of the RACH resource is associated with the beam position grouping rule of the NTN coverage area; where, The wave position grouping rule is used to determine multiple wave position groups within the NTN coverage area, and each wave position group includes one or more wave positions.

12. The method according to claim 11, wherein, The first information includes a first step length and a first boundary point on the boundary of the NTN coverage area. The wave position grouping rule includes starting from the first boundary point and determining multiple first sub-regions with the first step length as the radius within the NTN coverage area. One wave position group includes one or more wave positions within one first sub-region; Or, The first information includes at least a second step length. The wave position grouping rule includes determining multiple second sub-regions within the NTN coverage area. The multiple second sub-regions are formed by dividing the first diameter and the second diameter of the NTN coverage area respectively based on the second step length. The first diameter and the second diameter are cross-distributed in a cross shape within the NTN coverage area. One wave position group includes one or more wave positions within one second sub-region; Or, The first information includes a first angle or includes a first angle and reference point information. The wave position grouping rule includes determining multiple fan-shaped third sub-regions within the NTN coverage area. The multiple fan-shaped third sub-regions are formed by dividing the NTN coverage area using the first angle based on the center of the NTN coverage area or the reference point information. One wave position group includes one or more wave positions within one third sub-region; Or, The first information includes the vertex information of each of the multiple polygon-shaped fourth sub-regions within the NTN coverage area. The wave position grouping rule includes determining multiple fourth sub-regions based on the vertex information of each fourth sub-region. One wave position group includes one or more wave positions within one fourth sub-region.

13. The method according to claim 11, wherein, The second information includes at least one of the following: The SSB period associated with the wave position group where the terminal is located; The SSB period or SSB identifier corresponding to the wave position grouping rule; Fourth information, which is used to indicate that the SSB period corresponding to the wave position grouping rule changes with the parameters included in the wave position grouping rule; Fifth information, which includes parameters for determining the SSB period associated with each wave position group.

14. The method according to claim 13, wherein, The fifth information includes at least one of the following: A first parameter, which characterizes the total number of wave positions within the NTN coverage area; A second parameter associated with each wave position group, which characterizes the number of SSBs associated with the wave position group; A third parameter associated with each wave position group, which characterizes the total number of wave positions included in the wave position group.

15. The method according to claim 11, wherein, The method further includes: Determining the second information based on the SSB allocation rule of the multiple wave position groups. The SSB allocation rule includes one of the following: All SSBs poll all wave positions of all wave position groups as a whole; The first SSB polls all wave positions of all wave position groups as a whole, and the second SSB polls all wave positions of the first wave position group. The second SSB includes all SSBs except the first SSB among all SSBs; Each wave position group among the multiple wave position groups is associated with a fixed one or more SSBs.

16. The method according to claim 11, wherein, The third information includes a first threshold value, which is associated with a first distance, and the first distance is the distance between the terminal and the wave position center reference point of the wave position group where the terminal is located.

17. The method according to claim 16, wherein The third information further includes sixth information, and the sixth information characterizes the association relationship between the SSB associated with the wave position group where the terminal is located and the random access preamble.

18. The method according to claim 16, wherein The third information further includes seventh information, and the seventh information characterizes the mapping association period between the SSB associated with the wave position group where the terminal is located and the RACH resource, and the duration corresponding to the time domain resource of the RACH resource is less than or equal to the mapping association period.

19. The method according to any one of claims 11 to 18, wherein, The method further includes: Determining the number of terminals accessing the network in each wave position group; Based on the number of terminals accessing the network in each wave position group, updating the wave position grouping rule of the NTN coverage area, so that the range of each wave position group expands as the number of terminals accessing the network decreases; Based on the updated wave position grouping rule, updating the first information, and based on the updated first information, updating the second information and the third information; Sending at least one of the updated first information, the updated second information, and the updated third information to the terminal.

20. The method according to any one of claims 11 to 18, wherein The method further includes: Receiving eighth information sent by the terminal, and the eighth information includes at least one of the following: The location information of the terminal; The wave position information where the terminal is located; The wave position group information where the terminal is located; Based on the eighth information, updating the wave position grouping rule of the NTN coverage area, so that the range of each wave position group expands as the number of terminals in the wave position group decreases; Based on the updated wave position grouping rule, updating the first information, and based on the updated first information, updating the second information and the third information; Sending at least one of the updated first information, the updated second information, and the updated third information to the terminal.

21. The method according to any one of claims 11 to 18, wherein The method further includes: Receiving a first request sent by the terminal, and the first request is used to request an update of the third information; Based on the first request, updating the third information and sending the updated third information to the terminal.

22. An information transmission device, comprising: A first receiving unit, configured to receive at least one of the following information sent by the network side: First information, which is used to indicate the wave position grouping rule of the NTN coverage area; Second information, which includes relevant information of the SSB, and the relevant information of the SSB is associated with the wave position grouping rule of the NTN coverage area; Third information, which includes relevant information of the RACH resource, and the relevant information of the RACH resource is associated with the wave position grouping rule of the NTN coverage area; wherein, The wave position grouping rule is used to determine multiple wave position groups within the NTN coverage area, and each wave position group includes one or more wave positions.

23. An information transmission device, comprising: A second sending unit, configured to send at least one of the following information to the terminals within the NTN coverage area: First information, which is used to indicate the wave position grouping rule of the NTN coverage area; Second information, where the second information includes information related to the SSB, and the information related to the SSB is associated with the beam position grouping rule of the NTN coverage area; Third information, where the third information includes information related to the RACH resource, and the information related to the RACH resource is associated with the beam position grouping rule of the NTN coverage area; where, The beam position grouping rule is used to determine multiple beam position groups within the NTN coverage area, and each beam position group includes one or more beam positions.

24. A terminal, comprising: A first communication interface and a first processor; where, The first communication interface is configured to receive at least one of the following information sent by the network side: First information, where the first information is used to indicate the beam position grouping rule of the NTN coverage area; Second information, where the second information includes information related to the SSB, and the information related to the SSB is associated with the beam position grouping rule of the NTN coverage area; Third information, where the third information includes information related to the RACH resource, and the information related to the RACH resource is associated with the beam position grouping rule of the NTN coverage area; where, The beam position grouping rule is used to determine multiple beam position groups within the NTN coverage area, and each beam position group includes one or more beam positions.

25. A network device, comprising: A second communication interface and a second processor; where, The second communication interface is configured to send at least one of the following information to a terminal within the NTN coverage area: First information, where the first information is used to indicate the beam position grouping rule of the NTN coverage area; Second information, where the second information includes information related to the SSB, and the information related to the SSB is associated with the beam position grouping rule of the NTN coverage area; Third information, where the third information includes information related to the RACH resource, and the information related to the RACH resource is associated with the beam position grouping rule of the NTN coverage area; where, The beam position grouping rule is used to determine multiple beam position groups within the NTN coverage area, and each beam position group includes one or more beam positions.

26. A terminal, comprising: A first processor and a first memory configured to store a computer program that can run on the processor, where, when the first processor is configured to run the computer program, it executes the steps of the method according to any one of claims 1 to 10.

27. A network device, comprising: A second processor and a second memory configured to store a computer program that can run on the processor, where, when the second processor is configured to run the computer program, it executes the steps of the method according to any one of claims 11 to 21.

28. A storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 10, or implements the steps of the method according to any one of claims 11 to 21.

29. A computer program product, including a computer program, and when the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 10, or implements the steps of the method according to any one of claims 11 to 21.

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