Information transmission method and device, related equipment and storage medium

Abstract

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

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular, to an information transmission method, apparatus, related device, and storage medium. Background Art

[0002] In the discussion of the Non-Terrestrial Network (NTN) topic, it is usually assumed that a satellite covers the corresponding entire area with a wide beam (which can be expressed in English as beam). However, for how to optimize the coverage in the case where the satellite provides services using narrow beams (i.e., point beams), the related technology has not yet had an effective solution. Summary of the Invention

[0003] To solve the related technical problems, embodiments of this application provide an information transmission method, apparatus, related device, and storage medium.

[0004] The technical solution of the embodiments of this application is implemented as follows:

[0005] Embodiments of this application provide an information transmission method, applied to a terminal, including:

[0006] Receiving at least one of the following information sent by the network side:

[0007] First information, where the first information is used to indicate a wave position grouping rule for the NTN coverage area;

[0008] Second information, where the second information includes information related to a Synchronization Signal Block (SSB), and the information related to the SSB is associated with the wave position grouping rule for the NTN coverage area;

[0009] Third information, where the third information includes information related to a Random Access Channel (RACH) resource, and the information related to the RACH resource is associated with the wave position grouping rule for the NTN coverage area; where

[0010] 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.

[0011] 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, 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 within the NTN coverage area, and one wave position group includes one or more wave positions within one first sub-region;

[0012] Or,

[0013] The first information at least includes a second step length. The wave position grouping rule includes determining a plurality of second sub-regions within the NTN coverage area. The plurality of second sub-regions are formed by respectively dividing the first diameter and the second diameter of the NTN coverage area 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;

[0014] Or,

[0015] The first information includes a first angle or includes a first angle and reference point information. The wave position grouping rule includes determining a plurality of fan-shaped third sub-regions within the NTN coverage area. The plurality of fan-shaped third sub-regions are formed by dividing the NTN coverage area based on the center of the NTN coverage area or the reference point information and using the first angle. One wave position group includes one or more wave positions within one third sub-region;

[0016] Or,

[0017] The first information includes vertex information of each of a plurality of polygon-shaped fourth sub-regions within the NTN coverage area. The wave position grouping rule includes determining a plurality of 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.

[0018] In the above solution, the second information includes at least one of the following:

[0019] The SSB period associated with the wave position group where the terminal is located;

[0020] The SSB period or SSB identifier corresponding to the wave position grouping rule;

[0021] 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;

[0022] Fifth information, which includes parameters for determining the SSB period associated with each wave position group.

[0023] In the above solution, the fifth information includes at least one of the following:

[0024] A first parameter, which characterizes the total number of wave positions within the NTN coverage area;

[0025] A second parameter associated with each wave position group, which characterizes the number of SSBs associated with the wave position group;

[0026] 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.

[0027] In the above solution, 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:

[0028] When the first distance is greater than the first threshold, determine the SSB associated with the beam position group where the terminal is located;

[0029] Based on the SSB associated with the beam position group where the terminal is located, determine a target random access preamble, and perform random access using the target preamble.

[0030] In the above solution, 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 of the target preamble based on the SSB associated with the beam position group where the terminal is located includes:

[0031] Use the sixth information and the SSB associated with the beam position group where the terminal is located to determine the target preamble.

[0032] In the above solution, 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:

[0033] Determine the SSB period associated with the beam position group where the terminal is located;

[0034] Perform random access within the mapping association period after the SSB period. If the random access fails within the mapping association period, suspend the random access process and continue the random access in the next mapping association period.

[0035] In the above solution, the method further includes:

[0036] Receive at least one of the updated first information, updated second information, and updated third information sent by the network side.

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

[0038] Send 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:

[0039] The location information of the terminal;

[0040] The beam position information where the terminal is located;

[0041] The beam group information where the terminal is located.

[0042] In the above solution, the method further includes:

[0043] When the probability of random access failure is greater than a second threshold, and / or when the duration of completing a complete 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;

[0044] Receiving the updated third information sent by the network side.

[0045] An embodiment of the present application further provides an information transmission method, which is applied to a network device and includes:

[0046] Sending at least one of the following information to a terminal within the NTN coverage area:

[0047] First information, where the first information is used to indicate the beam grouping rule of the NTN coverage area;

[0048] Second information, where the second information includes information related to the SSB, and the information related to the SSB is associated with the beam grouping rule of the NTN coverage area;

[0049] 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 grouping rule of the NTN coverage area; where

[0050] The beam grouping rule is used to determine multiple beam groups within the NTN coverage area, and each beam group includes one or more beam positions.

[0051] 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, and the beam 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, and one beam group includes one or more beam positions within one first sub-region;

[0052] Or,

[0053] The first information includes at least a second step length. The wave position grouping rule includes determining a plurality of second sub-regions within the NTN coverage area. The plurality of 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. A wave position group includes one or more wave positions within one second sub-region;

[0054] Or,

[0055] The first information includes a first angle or includes a first angle and reference point information. The wave position grouping rule includes determining a plurality of fan-shaped third sub-regions within the NTN coverage area. The plurality of fan-shaped third sub-regions are formed by dividing the NTN coverage area based on the center of the NTN coverage area or the reference point information and using the first angle. A wave position group includes one or more wave positions within one third sub-region;

[0056] Or,

[0057] The first information includes vertex information of each of a plurality of polygon-shaped fourth sub-regions within the NTN coverage area. The wave position grouping rule includes determining a plurality of fourth sub-regions based on the vertex information of each fourth sub-region. A wave position group includes one or more wave positions within one fourth sub-region.

[0058] In the above solution, the second information includes at least one of the following:

[0059] The SSB period associated with the wave position group where the terminal is located;

[0060] The SSB period or SSB identifier corresponding to the wave position grouping rule;

[0061] 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;

[0062] Fifth information, which includes parameters for determining the SSB period associated with each wave position group.

[0063] In the above solution, the fifth information includes at least one of the following:

[0064] A first parameter, which characterizes the total number of wave positions within the NTN coverage area;

[0065] A second parameter associated with each wave position group, which characterizes the number of SSBs associated with the wave position group;

[0066] The third parameter associated with each wave position group, where the third parameter characterizes the total number of wave positions included in the wave position group.

[0067] In the above solution, the method further includes:

[0068] Determine the second information based on the SSB allocation rules of the multiple wave position groups, where the SSB allocation rules include one of the following:

[0069] All SSBs poll all wave positions of all wave position groups as a whole;

[0070] 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, where the second SSB includes all SSBs except the first SSB among all SSBs;

[0071] Each wave position group among the multiple wave position groups is associated with a fixed one or more SSBs.

[0072] In the above solution, 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 wave position center reference point of the wave position group where the terminal is located.

[0073] In the above solution, the third information further includes sixth information, where 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.

[0074] In the above solution, the third information further includes seventh information, where 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.

[0075] In the above solution, the method further includes:

[0076] Determine the number of terminals accessing the network in each wave position group;

[0077] Based on the number of terminals accessing the network in each wave position group, update 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;

[0078] Based on the updated wave position grouping rule, update the first information, and based on the updated first information, update the second information and the third information;

[0079] Send at least one of the updated first information, the updated second information, and the updated third information to the terminal.

[0080] In the above solution, the method further includes:

[0081] Receive the eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0082] The location information of the terminal;

[0083] The wave position information where the terminal is located;

[0084] The wave position group information where the terminal is located;

[0085] Based on the eighth information, update 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;

[0086] Based on the updated wave position grouping rule, update the first information, and based on the updated first information, update the second information and the third information;

[0087] Send at least one of the updated first information, the updated second information, and the updated third information to the terminal.

[0088] In the above solution, the method further includes:

[0089] Receive the first request sent by the terminal, where the first request is used to request an update to the third information;

[0090] Based on the first request, update the third information, and send the updated third information to the terminal.

[0091] An information transmission device is further provided in an embodiment of the present application, including:

[0092] A first receiving unit, configured to receive at least one of the following information sent by the network side:

[0093] The first information, where the first information is used to indicate the wave position grouping rule of the NTN coverage area;

[0094] The second information, where the second information includes the 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;

[0095] The third information, where the third information includes the 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; where

[0096] 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.

[0097] An information transmission device is further provided in an embodiment of the present application, including:

[0098] A second sending unit, configured to send at least one of the following information to a terminal within the NTN coverage area:

[0099] A first piece of information, where the first piece of information is used to indicate the wave position grouping rule of the NTN coverage area;

[0100] A second piece of information, where the second piece of information includes information related to the SSB, and the information related to the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0101] A third piece of information, where the third piece of information includes information related to the RACH resource, and the information related to the RACH resource is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0102] 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.

[0103] An embodiment of this application further provides a terminal, including: a first communication interface and a first processor; wherein,

[0104] The first communication interface is configured to receive at least one of the following information sent by the network side:

[0105] A first piece of information, where the first piece of information is used to indicate the wave position grouping rule of the NTN coverage area;

[0106] A second piece of information, where the second piece of information includes information related to the SSB, and the information related to the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0107] A third piece of information, where the third piece of information includes information related to the RACH resource, and the information related to the RACH resource is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0108] 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.

[0109] An embodiment of this application further provides a network device, including: a second communication interface and a second processor; wherein,

[0110] The second communication interface is configured to send at least one of the following information to a terminal within the NTN coverage area:

[0111] A first piece of information, where the first piece of information is used to indicate the wave position grouping rule of the NTN coverage area;

[0112] A second piece of information, where the second piece of information includes information related to the SSB, and the information related to the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0113] A third piece of information, where the third piece of information includes information related to RACH resources, and the information related to the RACH resources is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0114] 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.

[0115] An embodiment of this application further provides a terminal, including: a first processor and a first memory for storing a computer program that can run on the processor,

[0116] wherein, when the first processor is used to run the computer program, it executes the steps of any of the above methods on the terminal side.

[0117] An embodiment of this application further provides a network device, including: a second processor and a second memory for storing a computer program that can run on the processor,

[0118] wherein, when the second processor is used to run the computer program, it executes the steps of any of the above methods on the network device side.

[0119] An embodiment of this application further provides 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 any of the above methods on the terminal side; or implements the steps of any of the above methods on the network device side.

[0120] The information transmission method, apparatus, related equipment and storage medium provided by the embodiments of the present application, the network side sends at least one of first information, second information and third information to a terminal within the 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 the wave position grouping rule of the NTN coverage area; the second information includes the related information of the SSB, and the related information of the SSB is associated with the wave position grouping rule of the NTN coverage area; the third information includes the related information of the RACH resource, and the related information of the RACH resource is associated with the wave position grouping rule of the NTN coverage area; 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. The solution provided by the embodiments of the present application proposes a wave position grouping rule for determining multiple wave position groups within the NTN coverage area for the case where a satellite provides services using spot beams, that is, for the NTN spot beam scenario. Each wave position group includes one or more wave positions. The network side configures at least one of the wave position grouping rule, the related information of the SSB associated with the wave position grouping rule, and the related information of the RACH resource associated with the wave position grouping rule for the terminal within the NTN coverage area. In this way, the terminal can subsequently use this information configured by the network side to improve the efficiency of random access, thereby achieving coverage optimization in the NTN spot beam scenario, that is, effectively improving (i.e., enhancing) the coverage performance of the NTN spot beam scenario. Description of the Drawings

[0121] Figure 1 Schematic diagram of the NTN spot beam scenario in the embodiments of the present application;

[0122] Figure 2 Schematic diagram of the wave position grouping rule in the embodiments of the present application;

[0123] Figure 3 Schematic flow diagram of the information transmission method in the embodiments of the present application;

[0124] Figure 4 Schematic structural diagram of an information transmission apparatus in the embodiments of the present application;

[0125] Figure 5 Schematic structural diagram of another information transmission apparatus in the embodiments of the present application;

[0126] Figure 6 Schematic structural diagram of a terminal in the embodiments of the present application;

[0127] Figure 7 Schematic structural diagram of a network device in the embodiments of the present application;

[0128] Figure 8 Schematic structural diagram of an information transmission system in the embodiments of the present application. Detailed implementation manners

[0129] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0130] In actual application, as Figure 1 shown, a satellite can use a spot beam to provide services. The advantage of a spot beam is that the beam is narrower and the energy is more concentrated. However, considering the large coverage of the satellite and the fact that the maximum number of existing SSBs is only 64, the NTN spot beam scenario may need to be scanned multiple times to achieve full coverage. In addition, there is a need for coverage optimization for the NTN spot beam and / or hopping beam scenario in the related art.

[0131] Based on this, in various embodiments of the present application, for the case where a satellite uses a spot beam to provide services, that is, for the NTN spot beam scenario, a wave position grouping rule for determining multiple wave position groups within the NTN coverage area is proposed. Each wave position group includes one or more wave positions. The network side configures at least one of the wave position grouping rule, the related information of the SSB associated with the wave position grouping rule, and the related information of the RACH resource associated with the wave position grouping rule for the terminals within the NTN coverage area. In this way, the terminals can subsequently use this information configured by the network side to improve the efficiency of random access, thereby achieving coverage optimization in the NTN spot beam scenario, that is, effectively improving (i.e., enhancing) the coverage performance of the NTN spot beam scenario.

[0132] Specifically, for Figure 1 the NTN spot beam scenario shown, an embodiment of the present application provides an information transmission method applied to a terminal. The method includes:

[0133] Receiving at least one of the following information sent by the network side:

[0134] The first information, where the first information is used to indicate the wave position grouping rule of the NTN coverage area;

[0135] The second information, where the second information includes the related information of the SSB, and the related information of the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0136] The third information, where the third information includes the related information of the RACH resource, and the related information of the RACH resource is associated with the wave position grouping rule of the NTN coverage area.

[0137] Wherein, the wave position grouping rule is used to determine multiple (i.e., at least two) wave position groups within the NTN coverage area, and each wave position group includes one or more wave positions (i.e., includes at least one wave position).

[0138] Here, it should be noted that in various embodiments of the present application, the term "plurality" means at least two. For example, the plurality of wave position groups means at least two wave position groups; the term "one or more" means at least one. For example, the one or more wave positions means at least one wave position.

[0139] In actual application, the terminal may also be referred to as a user equipment (UE), and may also be referred to as a user. It can be understood that the terminal is located within the NTN coverage area. In addition, the terminal may specifically receive at least one of the first information, the second information, and the third information sent by the network device on the network side, and the network device may include a base station (such as a gNB, etc.).

[0140] In actual application, the specific content of the wave position grouping rule may be preset according to requirements (such as network deployment requirements, etc.), and the first information may include information related to the wave position grouping rule.

[0141] Among them, 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. The wave position grouping rule may include determining a plurality of first sub-regions with the first step length as the radius within the NTN coverage area starting from the first boundary point, and one wave position group includes one or more wave positions within one first sub-region.

[0142] In actual application, the specific size of the first step length and the specific position of the first boundary point may be preset according to requirements (such as network deployment requirements, etc.). Exemplarily, the first step length, the first boundary point, and the first sub-region may be as Figure 2 shown in a, and it can be understood that the first sub-region is a circular region.

[0143] In one embodiment, the first information may at least include a second step length. The wave position grouping rule may include determining a plurality of second sub-regions within the NTN coverage area. The plurality of second sub-regions are formed by dividing the first diameter and the second diameter of the NTN coverage area based on the second step length respectively. The first diameter and the second diameter are distributed in a cross-shaped intersection within the NTN coverage area, and one wave position group includes one or more wave positions within one second sub-region.

[0144] In actual application, the first information may further include the diameter information of the NTN coverage area, such as the endpoint information of the first diameter and / or the second diameter, etc. Additionally, the specific size of the second step length and the specific positions of the first diameter and / or the second diameter can be preset according to requirements (such as network deployment requirements, etc.). Exemplarily, the second step length, the first diameter, the second diameter, and the second sub-region may be as Figure 2 shown in b. It can be understood that the second sub-region is a square region or a region with an irregular shape.

[0145] In one embodiment, the first information may include a first angle or include a first angle and reference point information. The wave position grouping rule may include determining a plurality of fan-shaped third sub-regions within the NTN coverage area. The plurality of 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.

[0146] In actual application, the reference point information is used to determine a reference point, and specifically may include the position information of the reference point. The specific size of the first angle and the specific position of the reference point corresponding to the reference point information can be preset according to requirements (such as network deployment requirements, etc.). Exemplarily, as Figure 2 shown in c, when the first information only includes the first angle, the plurality of 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. Additionally, it can be understood that when the first information includes the first angle and reference point information, the plurality of fan-shaped third sub-regions are formed by dividing the NTN coverage area using the first angle based on the reference point corresponding to the reference point information.

[0147] In one embodiment, the first information may include the vertex information of each of a plurality of polygon-shaped fourth sub-regions within the NTN coverage area. The wave position grouping rule may include determining a plurality of 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.

[0148] In actual application, the specific shape of the fourth sub-region and the vertex positions can be preset according to requirements (such as network deployment requirements, etc.). Exemplarily, the shape of the fourth sub-region may be a triangle, a quadrilateral, a pentagon, a hexagon, etc., and the shapes of each fourth sub-region may be the same or different; when the shape of the fourth sub-region is a hexagon and the shapes of each fourth sub-region are the same, the fourth sub-region may be asFigure 2 as shown in d.

[0149] In one embodiment, the second information may include at least one of the following:

[0150] The SSB period associated with the beam position group where the terminal is located;

[0151] The SSB period or SSB identifier (such as an index, etc.) corresponding to the beam position grouping rule;

[0152] Fourth information, which is used to indicate that the SSB period corresponding to the beam position grouping rule changes with the parameters included in the beam position grouping rule;

[0153] Fifth information, which includes parameters for determining the SSB period associated with each beam position group.

[0154] Wherein, in actual application, the beam position group where the terminal is located can be understood as the beam position group corresponding to or associated with the terminal, and the terminal can determine its own beam position group according to the beam position grouping rule indicated by the first information. Specifically, when the terminal is located within a sub-region corresponding to a beam position group (i.e., the first sub-region, the second sub-region, the third sub-region, or the fourth sub-region), it can be determined that the terminal is within the beam position group, that is, it is determined that the terminal corresponds to / associates with the beam position group.

[0155] In actual application, when the second information includes the SSB period associated with the beam position group where the terminal is located, the network side can directly provide the SSB period information (such as 20 milliseconds (ms), etc.) within each beam position group by means of multicast; in other words, the network side can send the second information to each terminal within the beam position group for each beam position group by means of multicast, and the terminal can receive the second information sent by the network side for each beam position group by means of multicast.

[0156] In actual application, the SSB period or SSB identifier corresponding to the beam position grouping rule can be understood as the SSB period mapping information of the beam position grouping rule, that is, the network side can determine the SSB period mapping information of different beam position grouping rules, and then determine and send the corresponding SSB period mapping information to the terminal according to the beam position grouping rule indicated to the terminal (i.e., the first information).

[0157] In actual application, the fourth information can be understood as the SSB period change information corresponding to different parameter sizes of different beam position grouping rules, and the specific content of the fourth information can be set according to requirements (such as network deployment requirements, etc.). Exemplarily, for Figure 2The SSB period corresponding to the wave position grouping rule shown in a can be longer when the first step length is larger in the case that the first information includes the first step length and the first boundary point, that is, the fourth information can be used to indicate that the SSB period corresponding to the wave position grouping rule increases with the increase of the first step length; specifically, the fourth information can include the reference SSB period and the change rate information of the SSB period, and the terminal can calculate the SSB period corresponding to the wave position grouping rule according to the first step length, the reference SSB period and the change rate information of the SSB period.

[0158] In one embodiment, the parameters for determining the SSB period associated with each wave position group may include at least one of the following (that is, the fifth information may include at least one of the following):

[0159] The first parameter, which characterizes the total number of wave positions in the NTN coverage area;

[0160] The second parameter associated with each wave position group, which characterizes the number of SSBs associated with the wave position group;

[0161] The third parameter associated with each wave position group, which characterizes the total number of wave positions included in the wave position group.

[0162] In actual application, assuming that the default SSB period is n milliseconds (ms) (this parameter can be configured by the network side for the terminal or preset on the terminal), the number of SSBs associated with a wave position group (that is, the second parameter) is a, and the total number of wave positions included in this wave position group (that is, the third parameter) is b, then the terminal can calculate that the SSB period associated with this wave position group is n*b / a milliseconds (ms). Here, the SSBs associated with the wave position group can be understood as the SSBs served within the wave position group. In addition, the network side can explicitly provide the total number of wave positions included in each wave position group, that is, send the fifth information including the third parameter; or, when the fifth information does not include the third parameter, the terminal can calculate the third parameter according to the first parameter and the wave position grouping rule indicated by the first information.

[0163] In actual application, the network side can determine the second information based on the SSB allocation rules of the multiple wave position groups, and the SSB allocation rules can be preset according to requirements (such as network deployment requirements, etc.). Exemplarily, the SSB allocation rules may include one of the following:

[0164] All SSBs poll all wave positions of all wave position groups as a whole, that is, all SSBs poll all wave positions of all wave position groups in a specific order of all wave position groups (such as geographical distribution order, etc.) in turn;

[0165] 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, and the second SSB includes all SSBs except the first SSB in all SSBs, and 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.); illustratively, 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;

[0166] 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.

[0167] In practical application, considering that the number of SSBs associated with each wave position group is limited, that is, each wave position 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 receiving power (RSRP, Reference Signal Receiving Power) 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 wave position grouping rules, that is, the network side needs to send the third information to the terminals in the NTN coverage area.

[0168] 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 a distance between the terminal and a wave position center reference point of the wave position group where the terminal is located; the method may further include:

[0169] When the first distance is greater than the first threshold, determining an SSB associated with the wave position group where the terminal is located;

[0170] A target preamble is determined based on the SSB associated with the wave position group where the terminal is located, and random access is performed using the target preamble.

[0171] Among them, in actual application, the specific value of the first threshold can be determined by the network side according to requirements (such as network deployment requirements, etc.). After receiving the third information, the terminal can ignore the rsrp-ThresholdSSB configured by the network side and select RACH resources according to the distance between its own location 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 indexes (which can be expressed in English as ra-PreambleIndex) 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 can be dynamically configured by the network side to the terminal.

[0172] Based on this, in an embodiment, the third information may further include sixth information, and the sixth information represents the association relationship between the SSB associated with the wave position group where the terminal is located and the preamble (that is, the association relationship between different SSBs and different preambles); correspondingly, determining the target preamble based on the SSB associated with the wave position group where the terminal is located may include:

[0173] Using the sixth information and the SSB associated with the wave position group where the terminal is located to determine the target preamble.

[0174] In actual application, the network side can also dynamically configure for the terminal the mapping association period (which can be expressed in English as association period) t of the SSB to the physical random access channel (PRACH, Physical Random Access CHannel) occasion (subsequently denoted as seventh information in the following description). This mapping association period t can represent the time length for which the SSB provides services at each wave position; 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 time length 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 (that is, the SSB period associated with the wave position group where the terminal is located), it can only attempt to initiate random access within the continuous t time after every SSB polling period p; if the random access is not successful within the t time period, the terminal can not discard the configuration of the corresponding PARCH resources and suspend the current random access process, and then continue to attempt random access after the next SSB polling period p.

[0175] Based on this, in one embodiment, the third information may further include 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 may further include:

[0176] Determine the SSB period associated with the beam position group where the terminal is located;

[0177] Perform random access within the mapping association period after the SSB period. In the case where the random access within the mapping association period is unsuccessful, suspend the random access process and continue the random access in the next mapping association period.

[0178] Among them, in practical applications, as can be seen from the above description, 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. It can also be understood that the seventh information characterizes the mapping association period t from the SSB associated with the beam position group where the terminal is located to the PRACH occasion, or it can be understood that the seventh information characterizes the time length t for the SSB period associated with the beam position group where the terminal is located to serve each beam included in the beam position group where the terminal is located.

[0179] In practical applications, the network side can adjust (i.e., update) the beam grouping rule according to the number of terminals actually accessing the network in each initial beam position group; among them, the network side can determine the number of terminals actually accessing the network in each initial beam position group according to how many terminals access on the SSB allocated to each initial beam position group; in addition, the adjustment of the beam grouping rule by the network side can be based on the initial beam position group (which can be expressed as per beam position group). When the number of terminals actually accessing the network in the initial beam position group is smaller, the granularity of the beam position group is correspondingly increased (which can be understood as expanding the range of the sub-region corresponding to the beam position group) to increase the number of terminals covered by the beam position group.

[0180] Specifically, the network side can determine the number of terminals accessing the network in each beam position group, and based on the number of terminals accessing the network in each beam position group, update the beam grouping rule of the NTN coverage area so that the range of each beam position group expands as the number of terminals accessing the network decreases; the update of the beam grouping rule of the NTN coverage area may include adjusting (i.e., updating) the parameters included in the beam grouping rule, such as adjusting Figure 2 the step size granularity included in the beam grouping rule shown in a (i.e., adjusting the size of the first step), adjusting Figure 2 the diameter equal division granularity included in the beam grouping rule shown in b (i.e., adjusting the size of the second step), adjusting Figure 2The angular granularity included in the wave position grouping rule shown in c (i.e., adjusting the size of the first angle), or adjusting Figure 2 the vertex information included in the wave position grouping rule shown in d, etc. After updating the wave position grouping rule, the network side may update the first information based on the updated wave position grouping rule, and update the second information and the third information based on the updated first information; and, 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.

[0181] Based on this, in one embodiment, the method may further include:

[0182] Receiving at least one of the updated first information, the updated second information, and the updated third information sent by the network side.

[0183] Wherein, in actual application, when the network side updates the second information and the third information based on the updated first information, it may also update the SSB allocation rule based on the updated first information, that is, update the SSB allocation rule according to the updated wave position grouping rule; then update the second information by combining the updated wave position grouping rule and the updated SSB allocation rule, and update the third information by using the updated wave position grouping rule, the updated SSB allocation rule, and the updated second information.

[0184] Specifically, for the SSB allocation rule of polling some SSBs regularly and polling some other SSBs on demand (i.e., 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 network side may adjust (i.e., update) the allocation of the regularly polled SSB (i.e., the first SSB) and the on-demand mobile polled SSB (i.e., the second SSB) according to the updated wave position grouping rule; for example, if the total number of wave position groups corresponding to the updated wave position grouping rule becomes smaller, the network side may correspondingly reduce the number of regularly polled SSBs and increase the number of on-demand mobile polled SSBs.

[0185] For the SSB allocation rule of allocating a fixed one or more SSBs to each wave position group among the multiple wave position groups, the network side may adjust (i.e., update) the number of SSBs allocated to each wave position group according to the updated wave position grouping rule; for example, if the total number of wave position groups corresponding to the updated wave position grouping rule becomes smaller, the network side may correspondingly increase the number of SSBs allocated to each wave position group.

[0186] In actual application, the terminal may provide auxiliary information (which may be denoted as the eighth information in the subsequent description) for the adjustment (i.e., update) of the wave position grouping rule, such as at least one of position information, wave position information, and wave position group information.

[0187] Based on this, in one embodiment, the method may further include:

[0188] Sending the eighth information to the network side, where the eighth information is used to update the wave position grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0189] The position information of the terminal;

[0190] The wave position information where the terminal is located;

[0191] The wave position group information where the terminal is located.

[0192] Among them, in actual application, the position information may include accurate position information (such as longitude and latitude information, etc.) or rough position information (assuming the accurate position 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) of information can be taken as rough position information). After receiving the eighth information, the network side may update the wave position grouping rule of the NTN coverage area based on the eighth information, that is, update the wave position grouping rule of the NTN coverage area based on the eighth information of one or more terminals within the NTN coverage area, so that the range of each wave position group expands as the number of terminals within the wave position group decreases; then, the network side may update the first information based on the updated wave position grouping rule, and update the second information and the third information based on the updated first information; and, 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 (i.e., one or more terminals within the NTN coverage area).

[0193] In one embodiment, the method may further include:

[0194] When the probability of random access failure is greater than the second threshold, and / or when the duration of completing a complete random access process is greater than the third threshold, sending a first request to the network side, where the first request is used to request an update of the third information;

[0195] Receiving the updated third information sent by the network side.

[0196] In actual application, the specific values of the second threshold and / or the third threshold can be configured by the network side for 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 position grouping rule, that is, regardless of whether the terminal receives at least one of the updated first information, updated second information, and updated third information, the terminal can request the network side to update the third information according to needs (that is, when the probability of random access failure is greater than the second threshold, and / or when the duration of completing a full random access process is greater than the third threshold). In addition, after receiving the first request, the specific manner for the network side to update the third information based on the first request can be determined according to requirements (such as network deployment requirements, etc.); exemplarily, the network side can lengthen or shorten the interval between adjacent PRACH resources.

[0197] Correspondingly, 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.), and includes:

[0198] Sending at least one of the following information to a terminal within the NTN coverage area:

[0199] First information, where the first information is used to indicate the wave position grouping rule of the NTN coverage area;

[0200] Second information, where the second information 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;

[0201] 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 wave position grouping rule of the NTN coverage area; where

[0202] 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.

[0203] Wherein, in actual application, the terminal within the NTN coverage area can include one or more terminals within the NTN coverage area.

[0204] In one embodiment, the method may further include:

[0205] Determining the second information based on the SSB allocation rule of the multiple wave position groups, where the SSB allocation rule includes one of the following:

[0206] All SSBs poll all wave positions of all wave position groups as a whole;

[0207] The first SSB polls all the frequency positions of all the frequency position groups as a whole, and the second SSB polls all the frequency positions of the first frequency position group. The second SSB includes all the SSBs except the first SSB among all the SSBs;

[0208] Each of the multiple frequency position groups is associated with a fixed one or more SSBs.

[0209] In one embodiment, the method may further include:

[0210] Determine the number of terminals accessing the network within each frequency position group;

[0211] Based on the number of terminals accessing the network within each frequency position group, update the frequency position grouping rule of the NTN coverage area, so that the range of each frequency position group expands as the number of terminals accessing the network decreases;

[0212] Based on the updated frequency position grouping rule, update the first information, and based on the updated first information, update the second information and the third information;

[0213] Send at least one of the updated first information, the updated second information, and the updated third information to the terminal.

[0214] In one embodiment, the method may further include:

[0215] Receive the eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0216] The location information of the terminal;

[0217] The frequency position information of the frequency position where the terminal is located;

[0218] The frequency position group information of the frequency position group where the terminal is located;

[0219] Based on the eighth information, update the frequency position grouping rule of the NTN coverage area, so that the range of each frequency position group expands as the number of terminals within the frequency position group decreases;

[0220] Based on the updated frequency position grouping rule, update the first information, and based on the updated first information, update the second information and the third information;

[0221] Send at least one of the updated first information, the updated second information, and the updated third information to the terminal.

[0222] In one embodiment, the method may further include:

[0223] Receive the first request sent by the terminal, where the first request is used to request an update of the third information;

[0224] Update the third information based on the first request, and send the updated third information to the terminal.

[0225] Here, it should be noted that the specific processing procedure of the network device has been described in detail above (i.e., the specific processing procedure on the network side above), and will not be elaborated here.

[0226] Correspondingly, an embodiment of the present application further provides an information transmission method, as Figure 3 shown, the method includes:

[0227] Step 301: The network device sends at least one of the first information, the second information, and the third information to a terminal within the NTN coverage area;

[0228] Step 302: The terminal receives at least one of the first information, the second information, and the third information sent by the network device;

[0229] Wherein, the first information is used to indicate the wave position grouping rule of the NTN coverage area; the second information includes the 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; the third information includes the 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; 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.

[0230] The information transmission method provided by the embodiments of the present application is such that the network side sends at least one of a first piece of information, a second piece of information, and a third piece of information to a terminal within the NTN coverage area, and the terminal receives at least one of the first piece of information, the second piece of information, and the third piece of information sent by the network side; wherein, the first piece of information is used to indicate the wave position grouping rule of the NTN coverage area; the second piece of information contains information related to the SSB, and the information related to the SSB is associated with the wave position grouping rule of the NTN coverage area; the third piece of information contains information related to the RACH resource, and the information related to the RACH resource is associated with the wave position grouping rule of the NTN coverage area; the wave position grouping rule is used to determine multiple wave position groups within the NTN coverage area, and each wave position group contains one or more wave positions. The solution provided by the embodiments of the present application proposes a wave position grouping rule for determining multiple wave position groups within the NTN coverage area for the case where a satellite provides services using spot beams, that is, for the NTN spot beam scenario. Each wave position group contains one or more wave positions. The network side configures at least one of the wave position grouping rule, the information related to the SSB associated with the wave position grouping rule, and the information related to the RACH resource associated with the wave position grouping rule for the terminal within this NTN coverage area. In this way, the terminal can subsequently use this information configured by the network side to improve the efficiency of random access, thereby enabling coverage optimization in the NTN spot beam scenario, that is, effectively improving (i.e., enhancing) the coverage performance of the NTN spot beam scenario.

[0231] To implement the method on the terminal side in the embodiments of the present application, the embodiments of the present application also provide an information transmission device, which is set on the terminal, as Figure 4 shown. This device includes:

[0232] A first receiving unit 401, configured to receive at least one of the following information sent by the network side:

[0233] A first piece of information, where the first piece of information is used to indicate the wave position grouping rule of the NTN coverage area;

[0234] A second piece of information, where the second piece of information contains information related to the SSB, and the information related to the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0235] A third piece of information, where the third piece of information contains information related to the RACH resource, and the information related to the RACH resource is associated with the wave position grouping rule of the NTN coverage area; wherein,

[0236] the wave position grouping rule is used to determine multiple wave position groups within the NTN coverage area, and each wave position group contains one or more wave positions.

[0237] Wherein, 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 the distance between the terminal and the reference point of the center of the wave position group where the terminal is located;

[0238] Correspondingly, as Figure 4 shown, the apparatus may further include:

[0239] A random access unit 402, configured to:

[0240] When the first distance is greater than the first threshold value, determine the SSB associated with the wave position group where the terminal is located;

[0241] Based on the SSB associated with the wave position group where the terminal is located, determine a target preamble, and perform random access using the target preamble.

[0242] In one embodiment, 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 preamble;

[0243] 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 wave position group where the terminal is located.

[0244] In one embodiment, 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;

[0245] Correspondingly, the random access unit 402 is further configured to:

[0246] Determine the SSB period associated with the wave position group where the terminal is located;

[0247] Perform random access within the mapping association period after the SSB period. If the random access fails within the mapping association period, suspend the random access process and continue the random access in the next mapping association period.

[0248] 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.

[0249] In one embodiment, as Figure 4 shown, the apparatus may further include:

[0250] The first sending unit 403 is configured to send eighth information to the network side, where the eighth information is used to update the wave position grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0251] The location information of the terminal;

[0252] The wave position information where the terminal is located;

[0253] The wave position group information where the terminal is located.

[0254] In an 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 duration of completing a complete random access process is greater than a third threshold, where the first request is used to request an update of the third information;

[0255] Correspondingly, the first receiving unit 401 is further configured to receive the updated third information sent by the network side.

[0256] In practical applications, the first receiving unit 401 and the first sending unit 403 may be implemented by a communication interface in the information transmission device; the random access unit 402 may be implemented by a processor in the information transmission device in combination with the communication interface.

[0257] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, which is disposed on the network device, as Figure 5 shown, and the device includes:

[0258] A second sending unit 501 is configured to send at least one of the following information to a terminal within the NTN coverage area:

[0259] First information, where the first information is used to indicate the wave position grouping rule of the NTN coverage area;

[0260] Second information, where the second information includes related information of the SSB, and the related information of the SSB is associated with the wave position grouping rule of the NTN coverage area;

[0261] Third information, where the third information includes related information of the RACH resource, and the related information of the RACH resource is associated with the wave position grouping rule of the NTN coverage area; where

[0262] 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.

[0263] Wherein, in an embodiment, as Figure 5 shown, the device may further include:

[0264] An allocation unit 502, configured to determine the second information based on the SSB allocation rules of the multiple beam position groups, where the SSB allocation rules include one of the following:

[0265] All SSBs poll all beam positions of all beam position groups as a whole;

[0266] The first SSB polls all beam positions of all beam position groups as a whole, and the second SSB polls all beam positions of the first beam position group, where the second SSB includes all SSBs except the first SSB among all SSBs;

[0267] Each beam position group in the multiple beam position groups is associated with a fixed one or more SSBs.

[0268] In one embodiment, as Figure 5 shown, the device may further include:

[0269] An update unit 503, configured to:

[0270] Determine the number of terminals accessing the network within each beam position group;

[0271] Based on the number of terminals accessing the network within each beam position group, update the beam position grouping rules of the NTN coverage area, so that the range of each beam position group expands as the number of terminals accessing the network decreases;

[0272] Based on the updated beam position grouping rules, update the first information, and based on the updated first information, update the second information and the third information;

[0273] 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.

[0274] In one embodiment, as Figure 5 shown, the device may further include:

[0275] A second receiving unit 504, configured to receive the eighth information sent by the terminal, where the eighth information includes at least one of the following:

[0276] The location information of the terminal;

[0277] The beam position information where the terminal is located;

[0278] The beam position group information where the terminal is located;

[0279] Correspondingly, the update unit 503 is further configured to:

[0280] Update the wave position grouping rule of the NTN coverage area based on the eighth information, so that the range of each wave position group expands as the number of terminals in the wave position group decreases;

[0281] Update the first information based on the updated wave position grouping rule, and update the second information and the third information based on the updated first information;

[0282] 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.

[0283] In an 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 an update to the third information;

[0284] Correspondingly, the updating unit 503 is further configured to update the third information based on the first request;

[0285] The second sending unit 501 is further configured to send the updated third information to the terminal.

[0286] In practical applications, the second sending unit 501 and the second receiving unit 504 may be implemented by a communication interface in an information transmission device; the allocation unit 502 and the updating unit 503 may be implemented by a processor in an information transmission device.

[0287] It should be noted that: when the information transmission device provided in the above embodiment performs information transmission, only the above division of each program module is used for illustration. In practical applications, the above processing may be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept, and the specific implementation process thereof can be found in the method embodiment, which will not be elaborated here.

[0288] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiments of the present application, the embodiments of the present application further provide a terminal, as Figure 6 shown, the terminal 600 includes:

[0289] A first communication interface 601 capable of information interaction with the network side and / or other terminals;

[0290] 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 used to execute the method provided by one or more technical solutions on the terminal side when running a computer program;

[0291] The first memory 603, on which the computer program is stored.

[0292] Specifically, the first communication interface 601 is configured to receive at least one of the following information sent by the network side:

[0293] The first information, which is used to indicate the wave position grouping rule of the NTN coverage area;

[0294] The second information, which includes the 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;

[0295] The third information, which includes the 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; where

[0296] 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.

[0297] Wherein, in one embodiment, the third information includes a first threshold, the first threshold is associated with a first distance, and the first distance is the distance between the terminal 600 and the wave position center reference point of the wave position group where the terminal 600 is located;

[0298] Correspondingly, the first processor 602 is configured to:

[0299] When the first distance is greater than the first threshold, determine the SSB associated with the wave position group where the terminal 600 is located;

[0300] Based on the SSB associated with the wave position group where the terminal 600 is located, determine the target preamble and perform random access using the target preamble.

[0301] In one embodiment, the third information further includes sixth information, and the sixth information characterizes the association relationship between the SSB and the preamble associated with the wave position group where the terminal 600 is located;

[0302] Correspondingly, the first processor 602 is further configured to use the sixth information and the SSB associated with the wave position group where the terminal 600 is located to determine the target preamble.

[0303] In one embodiment, the third information further includes seventh information, and the seventh information characterizes the mapping association period between the SSB and the RACH resource associated with the wave position group where the terminal 600 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;

[0304] Accordingly, the first processor 602 is further configured to:

[0305] Determine the SSB period associated with the beam group where the terminal 600 is located;

[0306] Perform random access within the mapping association period after the SSB period. If the random access fails within the mapping association period, suspend the random access process and continue the random access in the next mapping association period.

[0307] In one embodiment, the first communication interface 601 is further configured to receive at least one of the updated first information, updated second information, and updated third information sent by the network side.

[0308] In one embodiment, the first communication interface 601 is further configured to send eighth information to the network side. The eighth information is used to update the beam grouping rule of the NTN coverage area, and the eighth information includes at least one of the following:

[0309] The location information of the terminal 600;

[0310] The beam information where the terminal 600 is located;

[0311] The beam group information where the terminal 600 is located.

[0312] In one embodiment, the first communication interface 601 is further configured to:

[0313] 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, send a first request to the network side. The first request is used to request an update of the third information;

[0314] Receive the updated third information sent by the network side.

[0315] It should be noted that the specific processing procedures of the first communication interface 601 and the first processor 602 can be understood with reference to the above method and will not be elaborated here.

[0316] Of course, in actual application, each component in the terminal 600 is coupled together through the bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 6 All kinds of buses are labeled as the bus system 604.

[0317] The first memory 603 in the embodiments 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 for operating on the terminal 600.

[0318] The method disclosed in the embodiments of the present application above can be applied to or implemented by the first processor 602. The first processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by the integrated logic circuit in the hardware of the first processor 602 or instructions in software form. The first processor 602 may 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 may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the first memory 603. The first processor 602 reads the information in the first memory 603 and combines its hardware to complete the steps of the foregoing method.

[0319] 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, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0320] Based on the hardware implementation of the foregoing program module, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application also provide a network device, as Figure 7 shown. The network device 700 includes:

[0321] A second communication interface 701, capable of interacting with the terminal and / or other network devices for information.

[0322] A second processor 702, connected to the second communication interface 701 to enable information interaction with the terminal and / or other network devices, and when running a computer program, executes the method provided by one or more of the above technical solutions on the network device side;

[0323] A second memory 703, on which the computer program is stored.

[0324] Specifically, the second communication interface 701 is used to send at least one of the following information to the terminal within the NTN coverage area:

[0325] First information, which is used to indicate the wave position grouping rule of the NTN coverage area;

[0326] Second information, which includes the 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;

[0327] Third information, which includes the 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,

[0328] 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.

[0329] Wherein, in one embodiment, the second processor 702 is used to determine the second information based on the SSB allocation rule of the multiple wave position groups, and the SSB allocation rule includes one of the following:

[0330] All SSBs poll all wave positions of all wave position groups as a whole;

[0331] 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, and the second SSB includes all SSBs except the first SSB among all SSBs;

[0332] Each wave position group in the multiple wave position groups is associated with a fixed one or more SSBs.

[0333] In one embodiment, the second processor 702 is further used to:

[0334] Determine the number of terminals accessing the network within each wave position group;

[0335] Based on the number of terminals accessing the network within each wave position group, update 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;

[0336] Update the first information based on the updated wave position grouping rule, and update the second information and the third information based on the updated first information;

[0337] 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.

[0338] In one embodiment, the second communication interface 701 is further configured to receive eighth information sent by the terminal, and the eighth information includes at least one of the following:

[0339] The location information of the terminal;

[0340] The wave position information where the terminal is located;

[0341] The wave position group information where the terminal is located;

[0342] Correspondingly, the second processor 702 is further configured to:

[0343] Update the wave position grouping rule of the NTN coverage area based on the eighth information, so that the range of each wave position group expands as the number of terminals in the wave position group decreases;

[0344] Update the first information based on the updated wave position grouping rule, and update the second information and the third information based on the updated first information;

[0345] 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.

[0346] In one embodiment, the second communication interface 701 is further configured to:

[0347] Receive a first request sent by the terminal, where the first request is used to request an update of the third information;

[0348] Update the third information based on the first request, and send the updated third information to the terminal.

[0349] It should be noted that the specific processing procedures of the second communication interface 701 and the second processor 702 can be understood with reference to the above method, and will not be elaborated here.

[0350] Of course, in practical applications, the various components in the network device 700 are coupled together through a bus system 704. It can be understood that the bus system 704 is used to implement connection communication between these components. In addition to the data bus, the bus system 704 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 7 all kinds of buses are labeled as the bus system 704.

[0351] 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 these data include: any computer program for operating on the network device 700.

[0352] The method disclosed in the above embodiment 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, the steps of the above method can be completed by the integrated logic circuit in hardware or instructions in software form in the second processor 702. The second processor 702 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, 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. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 703. The second processor 702 reads the information in the second memory 703 and combines its hardware to complete the steps of the foregoing method.

[0353] In an exemplary embodiment, the network device 700 can be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for executing the foregoing method.

[0354] It can be understood that the memories (the first memory 603 and the second memory 703) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include but not limited to these and any other suitable types of memories.

[0355] To implement the method provided by the embodiments of the present application, the embodiments of the present application further provide an information transmission system, as Figure 8 shown, the system includes: a terminal 801 and a network device 802.

[0356] 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 elaborated here.

[0357] In an exemplary embodiment, the embodiments of the present application further provide a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 603 storing a computer program, and the above computer program can be executed by a first processor 602 of the terminal 600 to complete the steps of the foregoing method on the terminal side. Another example is a second memory 703 storing a computer program, and the above computer program can be executed by a second processor 702 of the network device 700 to complete the steps of the foregoing method on the network device side. The computer-readable storage medium can be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0358] It should be noted that: "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence.

[0359] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0360] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. An information transmission method, characterized in that, Applied to a terminal, including: 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 the relevant information of the synchronization signal block (SSB), and the relevant information of the SSB is associated with the wave position grouping rule in the NTN coverage area; The third information, which contains the relevant information of the random access channel (RACH) resources, and the relevant information of the RACH resources is associated with the wave position grouping rule in the NTN coverage area; wherein, 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 the first step length and the 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 the second step length, and the wave position grouping rule includes determining multiple second sub-regions in 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 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 the first angle or contains the first angle and the reference point information, and the wave position grouping rule includes determining multiple fan-shaped third sub-regions in the NTN coverage area. The multiple fan-shaped third sub-regions are formed by dividing the NTN coverage area based on the center of the NTN coverage area or the reference point information and using the first angle, 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 the parameters for determining the SSB period associated with each wave position group.

4. The method according to claim 3, characterized in that, 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, 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 performing random access using the target preamble.

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, characterized in that 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, and when the random access within the mapping association period fails, 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, characterized in that, 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, characterized in that, 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 complete 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, characterized in that, Applied to a network device, including: Sending at least one of the following information to the 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 contains 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 contains 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 contains 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 contains one or more wave positions within one third sub-region; Or, The first information includes vertex information of each of 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 contains 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 contains 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 contained 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, and the first threshold value is associated with a first distance, where 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, characterized in that, 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, characterized in that, 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, characterized in that The method further includes: Receiving eighth information sent by the terminal, where 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, characterized in that The method further includes: Receiving a first request sent by the terminal, where 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, characterized in that, Includes: A first receiving unit, 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 wave 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 wave 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 wave 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.

23. An information transmission device, characterized in that, Includes: A second sending unit, configured to send at least one of the following information to the terminals within the NTN coverage area: First information, where the first information 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, characterized in that, 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, characterized in that, 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 terminals 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, characterized in that, Comprising: A first processor and a first memory for storing a computer program that can run on the processor, where, when the first processor is used 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, characterized in that, Comprising: A second processor and a second memory for storing a computer program that can run on the processor, where, when the second processor is used 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 having a computer program stored thereon, wherein, When the computer program is executed by the 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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