Downlink transmission control method, network equipment, terminal and storage medium

Abstract

The embodiment of the invention discloses a downlink transmission control method, network equipment, a terminal and a storage medium. The method applied to the network equipment comprises the following steps: configuring the repetition times of downlink transmission for the terminal based on first information; wherein the first information comprises satellite beam information and / or first auxiliary information reported by the terminal; and / or adjusting a downlink frequency division strategy based on the second information, wherein the second information comprises at least one of the following items: the number of satellite beams, a power limitation requirement and second auxiliary information reported by the terminal.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of wireless communication technologies, and in particular, to a downlink transmission control method, a network device, a terminal, and a storage medium. Background Art

[0002] Currently, for the problem of poor uplink coverage of a Non Terrestrial Network (NTN), enhanced designs have been made in communication standards. However, in scenarios where a satellite has multiple satellite beams or power is limited, etc., the satellite downlink transmission power will be affected, and there is also a problem of poor downlink coverage, which easily leads to a low success rate of downlink data reception. Summary of the Invention

[0003] Embodiments of the present application provide a downlink transmission control method, a network device, a terminal, and a storage medium, which enhance the NTN downlink coverage and improve the success rate of downlink data reception.

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

[0005] Embodiments of the present application provide a downlink transmission control method, which is applied to a network device, and the method includes:

[0006] Configuring the number of repetitions of downlink transmission for a terminal based on first information; wherein the first information includes satellite beam information and / or first auxiliary information reported by the terminal;

[0007] And / or, adjusting the downlink frequency division strategy based on second information; wherein the second information includes at least one of the following: the number of satellite beams, power limit requirements, and second auxiliary information reported by the terminal.

[0008] In the above method, the configuring the number of repetitions of downlink transmission for a terminal based on first information includes:

[0009] Determining N sets of repetition numbers based on the satellite beam information and / or the first auxiliary information; N is a natural number greater than or equal to 1, and each set of repetition numbers includes at least one number of repetitions of downlink transmission determined by at least one piece of information included in the satellite beam information and / or the first auxiliary information;

[0010] In the case where N is equal to 1, selecting one number of repetitions of downlink transmission from the determined one set of repetition numbers to configure for the terminal;

[0011] In the case where N is greater than 1, determining the intersection of the N sets of repetition numbers; or,

[0012] When the intersection is a non-empty set, select a repetition count for downlink transmission from the intersection to configure the terminal;

[0013] When the intersection is an empty set, select a repetition count for the next transmission from the N repetition count sets to configure the terminal.

[0014] In the above method, the satellite beam information includes at least one of the following:

[0015] The number of satellite beams;

[0016] The transmit power allocated to each satellite beam;

[0017] The coverage area of the satellite beam covering the terminal.

[0018] In the above method, when the transmit power allocated to each satellite beam is the same, the repetition count for downlink transmission satisfies at least one of the following conditions:

[0019] Is positively correlated with the distance from the first beam reference point to the second beam reference point; where the first beam reference point is the reference point of the satellite beam covering the terminal, and the second beam reference point is the reference point of the central satellite beam, and the central satellite beam is the satellite beam in the vertical direction of the satellite;

[0020] Is positively correlated with the number of satellite beams;

[0021] Is positively correlated with the coverage area of the satellite beam covering the terminal.

[0022] In the above method, when the transmit power allocated to at least one satellite beam is different from that of other satellite beams, the repetition count for downlink transmission is negatively correlated with the transmit power of the satellite beam covering the terminal.

[0023] In the above method, the first auxiliary information includes at least one of the following:

[0024] The communication environment of the terminal;

[0025] The distance between the terminal and the beam coverage edge;

[0026] The terminal capabilities of the terminal;

[0027] The importance level of the data expected to be received by the terminal.

[0028] In the above method, the repetition count for downlink transmission satisfies at least one of the following conditions:

[0029] Is negatively correlated with the communication environment of the terminal;

[0030] Is negatively correlated with the distance between the terminal and the beam coverage edge;

[0031] negatively correlated with the terminal capabilities of the terminal;

[0032] positively correlated with the importance level of the data expected to be received by the terminal.

[0033] In the above method, it further includes:

[0034] When the terminal cell changes, updating the number of repetitions of downlink transmission for the terminal.

[0035] In the above method, updating the number of repetitions of downlink transmission for the terminal includes at least one of the following:

[0036] In the case where the change of the satellite beam under the same satellite causes the change of the terminal cell, based on the change of the transmission power of the satellite beam covering the terminal and / or the distance from the central satellite beam before and after the cell change, updating the number of repetitions of downlink transmission for the terminal;

[0037] In the case where the change of the satellite causes the change of the terminal cell, based on the change of the satellite orbital altitude and / or the satellite service area before and after the cell change, updating the number of repetitions of downlink transmission for the terminal;

[0038] In the case where the movement of the terminal causes the change of the terminal cell, based on the cell change information reported by the terminal, updating the number of repetitions of downlink transmission for the terminal.

[0039] In the above method, the change of the terminal cell includes cell handover. Before the terminal cell handover, the terminal camps on the first cell, and after the handover, it camps on the second cell. The cell change information includes at least one of the following:

[0040] The cell identifiers corresponding to the first cell and the second cell respectively;

[0041] The satellite identifier information corresponding to the first cell and the second cell respectively;

[0042] The beam information corresponding to the first cell and the second cell respectively.

[0043] In the above method, the number of repetitions of downlink transmission for the terminal is configured in at least one of the following ways:

[0044] Broadcast message;

[0045] Downlink control information DCI;

[0046] Radio resource control RRC signaling;

[0047] Medium access control MAC control element.

[0048] In the above method, it further includes:

[0049] Updating the repetition times of downlink transmission for the terminal based on at least one of the following information:

[0050] Change information of the satellite beam, including at least one of the moving speed of the satellite beam and the change in the coverage range;

[0051] The update request of the terminal;

[0052] Change information of the network node;

[0053] Service duration information of the satellite and / or the satellite beam.

[0054] In the above method, the second auxiliary information includes at least one of the following:

[0055] Actual received power;

[0056] Idle frequency band information with signal quality greater than the threshold monitored within the first time period, including at least one of the starting frequency, ending frequency, interval, and data packet reception situation.

[0057] In the above method, it further includes:

[0058] Configuring an effective usage time corresponding to the repetition times of downlink transmission for the terminal.

[0059] An embodiment of the present application provides a downlink transmission control method applied to a terminal. The method includes:

[0060] Receiving the repetition times of downlink transmission configured by the network device based on the first information; wherein the first information includes satellite beam information and / or the first auxiliary information reported by the terminal;

[0061] And / or reporting the second auxiliary information to the network device for the network device to adjust the downlink frequency division strategy.

[0062] In the above method, the satellite beam information includes at least one of the following:

[0063] The number of satellite beams;

[0064] The transmission power allocated to each satellite beam;

[0065] The coverage range of the satellite beam covering the terminal.

[0066] In the above method, the first auxiliary information includes at least one of the following:

[0067] The communication environment of the terminal;

[0068] The distance between the terminal and the beam coverage edge;

[0069] The terminal capabilities of the terminal;

[0070] The importance level of the data expected to be received by the terminal.

[0071] In the above method, the second auxiliary information includes at least one of the following:

[0072] Actual received power;

[0073] Idle frequency band information where the signal quality is greater than the threshold within the first time period, including at least one of the start frequency, end frequency, interval, and packet reception situation.

[0074] In the above method, it further includes at least one of the following:

[0075] When the downlink data is received before the number of receptions reaches the configured number of repetitions, send a first response to the network device to instruct the network device to stop repeatedly sending the downlink data;

[0076] When the downlink data is received when the number of receptions reaches the configured number of repetitions, send a second response to the network device to instruct the network device that the downlink data has been received;

[0077] When the downlink data is not successfully received after reaching the configured number of repetitions, send a third response to the network device to instruct the network device that the downlink data has not been received.

[0078] An embodiment of the present application provides a network device, including: a first processor, a first memory, and a first communication bus;

[0079] The first communication bus is used to implement the communication connection between the first processor and the first memory;

[0080] The first processor is used to execute one or more computer programs stored in the first memory to implement a downlink transmission control method applied to the network device.

[0081] An embodiment of the present application provides a terminal, including: a second processor, a second memory, and a second communication bus;

[0082] The second communication bus is used to implement the communication connection between the second processor and the second memory;

[0083] The second processor is used to execute one or more computer programs stored in the second memory to implement a downlink transmission control method applied to the terminal.

[0084] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. It is characterized in that when the computer program is executed, the above-mentioned downlink transmission control method is implemented.

[0085] An embodiment of the present application provides a downlink transmission control method, a network device, a terminal, and a storage medium. The method applied to the network device includes: configuring the number of repetitions of downlink transmission for the terminal based on first information; wherein the first information includes satellite beam information and / or first auxiliary information reported by the terminal; and / or, adjusting the downlink frequency division strategy based on second information; wherein the second information includes at least one of the following: the number of satellite beams, power limit requirements, and second auxiliary information reported by the terminal. In the technical solution provided by the embodiment of the present application, the network device can configure the number of repetitions of downlink transmission for the terminal, enabling the terminal to repeatedly attempt to receive downlink data, thereby improving the success rate of downlink data reception. It can also adjust the downlink frequency division strategy to perform frequency division multiplexing enhancement, ensuring the reliability of downlink transmission and improving the success rate of downlink data reception. In summary, the technical solution provided by the present application enhances the NTN downlink coverage and improves the success rate of downlink data reception. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 is a schematic flow chart of a downlink transmission method provided by an embodiment of the present application Figure 1 ;

[0087] Figure 2 is an exemplary multi-beam scenario schematic diagram provided by an embodiment of the present application;

[0088] Figure 3 is an exemplary information configuration schematic diagram provided by an embodiment of the present application;

[0089] Figure 4 is an exemplary flow chart of adjusting the downlink frequency division strategy provided by an embodiment of the present application;

[0090] Figure 5 is a schematic flow chart of a downlink transmission control method provided by an embodiment of the present application Figure 2 ;

[0091] Figure 6 is a schematic structural diagram of a network device provided by an embodiment of the present application Figure 1 ;

[0092] Figure 7 is a schematic structural diagram of a network device provided by an embodiment of the present application Figure 2 ;

[0093] Figure 8 is a schematic structural diagram of a terminal provided by an embodiment of the present application Figure 1 ;

[0094] Figure 9 Structural schematic diagram of a terminal provided by an embodiment of the present application Figure 2 。 Detailed implementation manners

[0095] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0096] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be specifically described below through embodiments in combination with the accompanying drawings. The following embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0097] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0098] An embodiment of the present application provides a downlink transmission control method, which is applied to a network device. Figure 1 Flow schematic diagram of a downlink transmission method provided by an embodiment of the present application Figure 1 。As Figure 1 shown, in the embodiment of the present application, the downlink transmission method applied to the network device mainly includes the following steps:

[0099] S101. Configure the repetition times of downlink transmission for the terminal based on the first information; wherein, the first information includes satellite beam information and / or first auxiliary information reported by the terminal;

[0100] And / or, adjust the downlink frequency division strategy based on the second information; wherein, the second information includes at least one of the following: the number of satellite beams, the power limit requirement, and the second auxiliary information reported by the terminal.

[0101] In the embodiment of the present application, in the multi-beam scenario as Figure 2 shown, the network device can configure the repetition times of downlink transmission for the terminal, so that the terminal repeatedly attempts to receive downlink data, thereby improving the success rate of downlink data reception. In a power-limited scenario, the network device can adjust the downlink frequency division strategy to perform frequency division multiplexing enhancement and improve the reliability of downlink transmission, thereby improving the success rate of downlink data reception. The specific method adopted by the network device to improve the success rate of downlink data reception can be selected according to the actual application scenario and requirements, and the embodiments of the present application do not make limitations.

[0102] The following details the solution in which the network device configures the repetition times of downlink transmission for the terminal based on the first information.

[0103] In an embodiment of the present application, the first information includes satellite beam information and / or first auxiliary information, where the satellite beam information includes at least one of the following:

[0104] The number of satellite beams;

[0105] The transmit power allocated to each satellite beam;

[0106] The coverage area of the satellite beam covering the terminal.

[0107] It should be noted that in an embodiment of the present application, the satellite beam information may not only include at least one of the above three items of information, but may also include other characteristic information related to the satellite beam, which is not limited in the embodiments of the present application.

[0108] In an embodiment of the present application, considering the satellite beam information, the network device may determine the repetition times of downlink transmission for the terminal based on the following principles:

[0109] The first case: When the transmit power allocated to each satellite beam is the same, the repetition times of downlink transmission satisfy at least one of the following conditions:

[0110] Is positively correlated with the distance from the first beam reference point to the second beam reference point; where the first beam reference point is the reference point of the satellite beam covering the terminal, and the second beam reference point is the reference point of the central satellite beam, and the central satellite beam is the satellite beam in the vertical direction of the satellite;

[0111] Is positively correlated with the number of satellite beams;

[0112] Is positively correlated with the coverage area of the satellite beam covering the terminal.

[0113] The second case: When the transmit power of at least one satellite beam is different from that of other satellite beams, the repetition times of downlink transmission are negatively correlated with the transmit power of the satellite beam covering the terminal.

[0114] Exemplarily, in an embodiment of the present application, the network device configures the repetition times a for the terminal under the coverage of the central satellite beam, and configures the repetition times b for the terminal under the coverage of another satellite beam at a distance of n km from the central satellite beam. b is proportional to the distance of this satellite beam from the central satellite beam. For example, b = a + n * x, where x is the repetition times change rate per unit distance (such as 1 km).

[0115] Exemplarily, in the embodiments of the present application, the network device evenly distributes the transmission power for each satellite beam. At this time, the number of repetitions of downlink transmission is configured for the terminal according to the size of the coverage range of the satellite beam. For example, the coverage radius of a certain satellite beam is d1 km, and the network device configures the number of repetitions for the terminals covered by this satellite beam as a1. For a satellite beam with a coverage radius of d2 km (assuming d2 > d1), the network beam will configure a larger number of repetitions a2 for the terminals covered by it, and a2 = a1 + (d2 - d1) * m, where m is the change rate of the number of repetitions per unit coverage radius (such as 1 km).

[0116] In the embodiments of the present application, the first information includes satellite beam information and / or first auxiliary information, where the first auxiliary information includes at least one of the following:

[0117] The communication environment of the terminal;

[0118] The distance between the terminal and the beam coverage edge;

[0119] The terminal capability of the terminal;

[0120] The importance of the data expected to be received by the terminal.

[0121] It should be noted that in the embodiments of the present application, considering the differences in terminal capabilities among different types of terminals, such as ordinary terminals, lightweight terminals, and Internet of Things terminals, therefore, the terminal capability of the terminal can be specifically reflected by the terminal type, that is, the terminal type can be used to indicate the terminal capability.

[0122] It should be noted that in the embodiments of the present application, the first auxiliary information may not only include at least one of the above four items of information, but may also include other feature information related to the terminal, which is not limited in the embodiments of the present application.

[0123] In the embodiments of the present application, considering the first auxiliary information reported by the terminal, the network device can determine the number of repetitions of downlink transmission for the terminal based on the following principles to meet at least one of the following conditions:

[0124] The number of repetitions of downlink transmission:

[0125] Negatively correlated with the communication environment of the terminal;

[0126] Negatively correlated with the distance between the terminal and the beam coverage edge;

[0127] Negatively correlated with the terminal capability of the terminal;

[0128] Positively correlated with the importance of the data expected to be received by the terminal.

[0129] It can be understood that in the embodiments of the present application, the worse the communication environment of the terminal is, for example, in a forest with tree obstruction in the communication environment, the more times the downlink transmission is configured to be repeated. The communication environment of the terminal can be determined by the terminal according to its own location information and can be indicated in the form of an index. For example, 00 corresponds to the ocean, 01 corresponds to the forest, 02 corresponds to the desert, etc. The specific correspondence between the index and the communication environment can be pre-deployed in the terminal or specified in the protocol in the form of a table or information element.

[0130] It can be understood that in the embodiments of the present application, the worse the terminal capabilities of the terminal are, that is, the lower the terminal type level is, the more times the downlink transmission is configured to be repeated.

[0131] It can be understood that in the embodiments of the present application, the greater the distance between the terminal and the edge of the beam coverage, that is, the closer to the edge of the beam coverage, the more times the downlink transmission is configured to be repeated.

[0132] It can be understood that in the embodiments of the present application, the higher the importance of the data expected to be received by the terminal is, in order to enable the data to reach the terminal as soon as possible and successfully, the more times the downlink transmission is configured to be repeated.

[0133] It should be noted that in the embodiments of the present application, the above satellite beam information and the first auxiliary information both include at least one piece of information. Different information can affect the number of repetitions of the next transmission configured from different dimensions. Based on this, different information combinations can be considered to finally determine the number of repetitions of the downlink transmission.

[0134] In the embodiments of the present application, the network device configures the number of repetitions of the downlink transmission for the terminal based on the first information, including: determining N sets of repetition numbers based on the satellite beam information and / or the first auxiliary information; N is a natural number greater than or equal to 1. Each set of repetition numbers contains at least one number of repetitions of the downlink transmission determined by at least one piece of information included in the satellite beam information and / or the first auxiliary information; in the case where N is equal to 1, selecting one number of repetitions of the downlink transmission from the determined one set of repetition numbers to configure for the terminal; or, in the case where N is greater than 1, determining the intersection of the N sets of repetition numbers; in the case where the intersection is a non-empty set, selecting one number of repetitions of the downlink transmission from the intersection to configure for the terminal; in the case where the intersection is an empty set, selecting one number of repetitions of the next transmission from the N sets of repetition numbers to configure for the terminal.

[0135] It should be noted that in the embodiments of the present application, the at least one repetition number of the downlink transmission included in each repetition number set can be selectively determined by one or more pieces of information. Among them, the repetition numbers of the downlink transmission in the same repetition number set can be determined by the same information based on different rules, or can be determined by different information. The specific N repetition number sets are not limited in the embodiments of the present application.

[0136] It can be understood that in the embodiments of the present application, when the number of determined repetition number sets is one, that is, N is equal to 1, the network device can directly select a repetition number of the downlink transmission from it for configuring the terminal. The specific selection rule can be based on the priority of each piece of information used to determine the repetition number of the downlink transmission. For example, the repetition number set determined by the network device is {1, 2, 3}, where the priority of the information used to determine the repetition number 2 is the highest. Therefore, the repetition number of the downlink transmission selected for configuring the terminal is 2. The specific selection rule can be set according to actual requirements and application scenarios, and is not limited in the embodiments of the present application.

[0137] It can be understood that in the embodiments of the present application, when the number of determined repetition number sets is multiple, that is, N is greater than 1, the network device can select a repetition number of the downlink transmission from the intersection of the N repetition number sets for configuring the terminal, so as to ensure that multiple dimensions of factors are maximally considered to configure a better repetition number of the downlink transmission for the terminal. Of course, if the intersection is empty, the network device can directly select a repetition number of the downlink transmission from the N repetition number sets for configuring the terminal. The specific selection rule can be set according to actual requirements and application scenarios, and is not limited in the embodiments of the present application.

[0138] In the embodiments of the present application, the satellite high-speed moving cell changes frequently, or the terminal moves to different cells. Especially when the moving directions of the terminal and the satellite or satellite beam are opposite, considering the influence of cell changes, the network device can also update the repetition number of the downlink transmission for the terminal when the terminal cell changes.

[0139] In the embodiments of the present application, the network device updates the repetition number of the downlink transmission for the terminal, including at least one of the following: in the case where the change of the satellite beam under the same satellite causes the change of the terminal cell, based on the change of the transmission power of the satellite beam covering the terminal and / or the distance from the central satellite beam before and after the cell change, updating the repetition number of the downlink transmission for the terminal; in the case where the change of the satellite causes the change of the terminal cell, based on the change of the satellite orbital altitude and / or the satellite service area before and after the cell change, updating the repetition number of the downlink transmission for the terminal; in the case where the movement of the terminal causes the change of the terminal cell, updating the repetition number of the downlink transmission for the terminal based on the cell change information reported by the terminal.

[0140] It should be noted that in the embodiments of the present application, in the case where the satellite beam change under the same satellite causes the terminal cell change, if the transmit power allocated to the satellite beam covering the terminal is lower and / or the distance from the central satellite beam is farther after the cell change, the number of repetitions of the downlink transmission can be increased. Conversely, the number of repetitions of the downlink transmission can be decreased.

[0141] It should be noted that in the embodiments of the present application, in the case where the satellite change causes the terminal cell change, if the satellite orbit height becomes a higher orbit than before, the number of repetitions of the downlink transmission can be increased. If the satellite orbit height does not change, but the distance from the previous service area is farther, the number of repetitions of the downlink transmission can also be increased. Conversely, the number of repetitions of the downlink transmission can be decreased.

[0142] It should be noted that in the embodiments of the present application, the terminal cell change includes cell handover. Before the cell handover, the terminal resides in the first cell, and after the handover, it resides in the second cell. The network device can update the number of repetitions of the downlink transmission for the terminal based on the cell change information reported by the terminal. Among them, the cell change information reported by the terminal includes at least one of the following:

[0143] The cell identifiers corresponding to the first cell and the second cell respectively;

[0144] The satellite identifier information corresponding to the first cell and the second cell respectively;

[0145] The beam information corresponding to the first cell and the second cell respectively.

[0146] In the embodiments of the present application, the network device can also update the number of repetitions of the downlink transmission for the terminal based on at least one of the following information:

[0147] The change information of the satellite beam, including at least one of the moving speed of the satellite beam and the change of the coverage range;

[0148] The update request of the terminal;

[0149] The change information of the network node;

[0150] The service duration information of the satellite and / or the satellite beam.

[0151] It should be noted that in the embodiments of the present application, the network device can not only update the number of repetitions of the downlink transmission for the terminal based on at least one of the above information, but also update it based on the characteristic information of other networks or terminals. The embodiments of the present application do not make any limitations.

[0152] In the embodiments of the present application, the network device configures the number of repetitions of the downlink transmission for the terminal in at least one of the following ways:

[0153] Broadcast message;

[0154] Downlink Control Information (DCI);

[0155] Radio Resource Control (RRC) signaling;

[0156] Media Access Control (MAC) control element.

[0157] It should be noted that in the embodiments of the present application, the network device can not only configure the number of repetitions of downlink transmission for the terminal, but also configure the effective usage time corresponding to the number of repetitions of downlink transmission for the terminal, and specifically can be configured simultaneously in the same way.

[0158] It can be understood that in the embodiments of the present application, when the network device updates the number of repetitions of downlink transmission for the terminal, it actually reconfigures the number of repetitions of downlink transmission for the terminal, and the configuration is implemented by using at least one of the above methods.

[0159] It should be noted that in the embodiments of the present application, the network device can configure the number of repetitions of downlink transmission for the terminals in the entire cell through a broadcast message in the initial situation, and update the number of repetitions of downlink transmission through a dedicated signaling message after entering the connected state.

[0160] It should be noted that in the embodiments of the present application, for the messages (Message, Msg) in the communication protocol, such as Msg2 / MsgB / Msg4, the network device configures the number of repetitions of downlink transmission for the terminal by carrying it in the corresponding MAC control element or the DCI scheduling Msg2 / MsgB / Msg4.

[0161] Exemplarily, in the embodiments of the present application, the number of repetitions of downlink transmission and / or the effective duration of the number of repetitions can be configured for the terminal by carrying them in a broadcast message or the DCI scheduling Msg2 / MsgB, and the existing R bit is utilized.

[0162] Exemplarily, in the embodiments of the present application, as Figure 3 shown, the number of repetitions of downlink transmission can be configured for the terminal by carrying it in the MAC control element corresponding to Msg4. Specifically, two R bits can be utilized, one for indicating the number of repetitions of downlink transmission, and the other for indicating the corresponding effective usage time.

[0163] The following details the solution for the network device to adjust the downlink frequency division strategy based on the second information.

[0164] It should be noted that in a power-constrained scenario, the scheme of configuring the repetition times of downlink transmission may instead enhance interference and fail to meet the requirements of the Power flux-density (PFD) limit. Based on this, frequency-division multiplexing enhancement can be considered to improve the success rate of downlink data reception.

[0165] In an embodiment of the present application, the second information includes at least one of the following: the number of satellite beams, the power limit requirement, and the second auxiliary information reported by the terminal, where the second auxiliary information includes at least one of the following:

[0166] Actual received power;

[0167] Idle frequency band information where the signal quality is greater than the threshold within the first time period, including at least one of the start frequency, end frequency, interval, and packet reception situation.

[0168] It should be noted that in an embodiment of the present application, the first time period and the threshold for evaluating the signal quality can be configured by the network device, and the configuration principle can be based on service types, Quality of Service (QoS) requirements, etc., which are not limited in the embodiments of the present application.

[0169] Figure 4 It is a schematic flowchart of an exemplary process for adjusting the downlink frequency-division strategy provided by an embodiment of the present application. As Figure 4 shown, it mainly includes the following steps:

[0170] S201. The network device configures the Reference Signal Received Power (RSRP) / Reference Signal Received Quality (RSRQ) threshold information and time information for the terminal to monitor the idle frequency band;

[0171] S202. The terminal monitors the idle frequency band according to the configured information. If the RSRP / RSRQ of a certain frequency band exceeds the threshold within a period of time, the terminal reports the frequency band to the network device in the form of start frequency + interval;

[0172] S203. The network device evenly allocates and increases the frequency resources of the frequency band for different satellite beams according to the idle frequency band information reported by the terminal;

[0173] S204. The terminal monitors the number of packets actually successfully received within a period of time and feeds it back to the network device;

[0174] S205. The network device determines whether the number of data packets reported by the terminal is less than a certain threshold and / or whether the service type of the upcoming data communication has relatively high requirements for reliability and / or latency. If the determination result is yes, proceed to step S206;

[0175] S206. Add the frequency resources of the idle frequency bands monitored for the terminal.

[0176] It should be noted that in the embodiments of the present application, Figure 4 the shown process is only an exemplary way to adjust the downlink frequency division strategy based on the second auxiliary information. Of course, the network device can also adjust the downlink frequency division strategy based on the second auxiliary information using other rules or methods, which are not limited in the embodiments of the present application.

[0177] The embodiments of the present application also provide a downlink transmission control method applied to a terminal. Figure 5 It is a schematic flow of a downlink transmission control method provided by the embodiments of the present application Figure 2 . As Figure 5 shown, the downlink transmission control method applied to a terminal mainly includes the following steps:

[0178] S301. Receive the number of repetitions of the downlink transmission configured by the network device based on the first information; wherein, the first information includes satellite beam information and / or the first auxiliary information reported by the terminal;

[0179] and / or report the second auxiliary information to the network device for the network device to adjust the downlink frequency division strategy.

[0180] In the embodiments of the present application, corresponding to the above-mentioned downlink transmission control method applied to the network device, the terminal can receive the number of repetitions of the downlink transmission configured by the network device, so that the terminal repeatedly attempts to receive the downlink data, improving the success rate of receiving the downlink data. In addition, the terminal can also report the second auxiliary information to the network device, enabling the network device to perform frequency division multiplexing enhancement by adjusting the downlink frequency division strategy, improving the reliability of the downlink transmission, and thus improving the success rate of receiving the downlink data.

[0181] In the embodiments of the present application, the above-mentioned satellite beam information includes at least one of the following:

[0182] The number of satellite beams;

[0183] The transmit power allocated to each satellite beam;

[0184] The coverage range of the satellite beam covering the terminal.

[0185] In the embodiments of the present application, the above-mentioned first auxiliary information includes at least one of the following:

[0186] The communication environment of the terminal;

[0187] The distance between the terminal and the edge of the beam coverage;

[0188] The terminal capabilities of the terminal;

[0189] The importance level of the data expected to be received by the terminal.

[0190] In an embodiment of the present application, after receiving the number of repetitions of the downlink transmission configured by the network device, the terminal may perform at least one of the following: when receiving downlink data before the number of receptions reaches the configured number of repetitions, send a first response to the network device to indicate that the network device stops repeating the transmission of downlink data; when receiving downlink data when the number of receptions reaches the configured number of repetitions, send a second response to the network device to indicate that the network device has received the downlink data; when not successfully receiving downlink data after reaching the configured number of repetitions, send a third response to the network device to indicate that the network device has not received the downlink data.

[0191] It can be understood that, in an embodiment of the present application, when the terminal receives downlink data before the number of receptions reaches the configured number of repetitions, it can timely indicate to the network device to stop repeating the transmission of downlink data, thereby avoiding the network device from continuing to repeat the transmission of downlink data and saving the transmission resources of the network device; when the terminal receives downlink data when the number of receptions reaches the configured number of repetitions, it indicates that the network device has received the downlink data, and the network device can thereby know that the currently configured number of repetitions of the downlink transmission is suitable for the terminal; when the terminal does not successfully receive downlink data after reaching the configured number of repetitions, it indicates that the network device has not received the downlink data, and the network device can thereby know that the currently configured number of repetitions of the downlink transmission is small, and can appropriately increase the number of repetitions of the downlink transmission for the terminal.

[0192] In an embodiment of the present application, the above second auxiliary information includes at least one of the following:

[0193] The actual received power;

[0194] The idle frequency band information whose signal quality is greater than the threshold within the first time period, including at least one of the start frequency, end frequency, interval, and packet reception situation.

[0195] It should be noted that, in an embodiment of the present application, the second auxiliary information may be reported by the terminal under the trigger of the network device, or may be reported by the terminal when meeting certain conditions, or periodically, which can be determined according to actual requirements and application scenarios, and the embodiments of the present application do not make limitations.

[0196] An embodiment of the present application provides a network device. Figure 6Structural schematic diagram of a network device provided by an embodiment of the present application Figure 1 As Figure 6 shown, in the embodiment of the present application, the network device includes:

[0197] A processing module 401, configured to configure the number of repetitions of downlink transmission for a terminal based on first information; wherein, the first information includes satellite beam information and / or first auxiliary information reported by the terminal; and / or, adjust the downlink frequency division strategy based on second information; wherein, the second information includes at least one of the following: the number of satellite beams, power limit requirements, and second auxiliary information reported by the terminal.

[0198] In an embodiment of the present application, the processing module 401 is further configured to determine N sets of repetition numbers based on the satellite beam information and / or the first auxiliary information; N is a natural number greater than or equal to 1, and each set of repetition numbers includes at least one number of repetitions of downlink transmission determined by at least one piece of information included in the satellite beam information and / or the first auxiliary information; when N is equal to 1, select one number of repetitions of downlink transmission from the determined one set of repetition numbers to configure for the terminal; or, when N is greater than 1, determine the intersection of the N sets of repetition numbers; when the intersection is a non-empty set, select one number of repetitions of downlink transmission from the intersection to configure for the terminal; when the intersection is an empty set, select one number of repetitions of the next transmission from the N sets of repetition numbers to configure for the terminal.

[0199] In an embodiment of the present application, the satellite beam information includes at least one of the following:

[0200] The number of satellite beams;

[0201] The transmit power allocated to each satellite beam;

[0202] The coverage range of the satellite beam covering the terminal.

[0203] In an embodiment of the present application, when the transmit power allocated to each satellite beam is the same, the number of repetitions of downlink transmission satisfies at least one of the following conditions:

[0204] Positively correlated with the distance from the first beam reference point to the second beam reference point; wherein, the first beam reference point is the reference point of the satellite beam covering the terminal, and the second beam reference point is the reference point of the central satellite beam, and the central satellite beam is the satellite beam in the vertical direction of the satellite;

[0205] Positively correlated with the number of satellite beams;

[0206] Positively correlated with the coverage range of the satellite beam covering the terminal.

[0207] In an embodiment of the present application, when at least one satellite beam has a different transmission power from other satellite beams, the number of repetitions of downlink transmission is negatively correlated with the transmission power of the satellite beam covering the terminal.

[0208] In an embodiment of the present application, the first auxiliary information includes at least one of the following:

[0209] The communication environment of the terminal;

[0210] The distance between the terminal and the edge of the beam coverage;

[0211] The terminal capabilities of the terminal;

[0212] The importance level of the data expected to be received by the terminal.

[0213] In an embodiment of the present application, the number of repetitions of downlink transmission satisfies at least one of the following conditions:

[0214] Negatively correlated with the communication environment of the terminal;

[0215] Negatively correlated with the distance between the terminal and the edge of the beam coverage;

[0216] Negatively correlated with the terminal capabilities of the terminal;

[0217] Positively correlated with the importance level of the data expected to be received by the terminal.

[0218] In an embodiment of the present application, the processing module 401 is further configured to update the number of repetitions of downlink transmission for the terminal when the terminal cell changes.

[0219] In an embodiment of the present application, the processing module 401 is further configured to perform at least one of the following:

[0220] When the change of the satellite beam under the same satellite causes the change of the terminal cell, based on the change of the transmission power of the satellite beam covering the terminal and / or the distance from the central satellite beam before and after the cell change, update the number of repetitions of downlink transmission for the terminal;

[0221] When the change of the satellite causes the change of the terminal cell, based on the change of the satellite orbital altitude and / or the satellite service area before and after the cell change, update the number of repetitions of downlink transmission for the terminal;

[0222] When the movement of the terminal causes the change of the terminal cell, update the number of repetitions of downlink transmission for the terminal based on the cell change information reported by the terminal.

[0223] In an embodiment of the present application, the terminal cell change includes cell handover. Before the handover, the terminal camps on a first cell, and after the handover, it camps on a second cell. The cell change information includes at least one of the following: the cell identifiers corresponding to the first cell and the second cell respectively;

[0224] the satellite identification information corresponding to the first cell and the second cell respectively;

[0225] the beam information corresponding to the first cell and the second cell respectively.

[0226] In an embodiment of the present application, the processing module 401 is further configured to configure the number of repetitions of downlink transmission for the terminal in at least one of the following manners:

[0227] Broadcast message;

[0228] Downlink control information DCI;

[0229] Radio resource control RRC signaling;

[0230] Medium access control MAC control element.

[0231] In an embodiment of the present application, the processing module 401 is further configured to update the number of repetitions of downlink transmission for the terminal based on at least one of the following information:

[0232] The change information of the satellite beam, including at least one of the moving speed of the satellite beam and the change of the coverage range;

[0233] The update request of the terminal;

[0234] The change information of the network node;

[0235] The service duration information of the satellite and / or the satellite beam.

[0236] In an embodiment of the present application, the second auxiliary information includes at least one of the following:

[0237] Actual received power;

[0238] The idle frequency band information with signal quality greater than the threshold monitored within the first time period, including at least one of the start frequency, end frequency, interval, and packet reception situation.

[0239] In an embodiment of the present application, the processing module 401 is further configured to configure the effective usage time corresponding to the number of repetitions of downlink transmission for the terminal.

[0240] Figure 7 Schematic diagram of the structure of a network device provided by an embodiment of the present application Figure 2 As Figure 7As shown in the figure, in an embodiment of the present application, the network device includes: a first processor 501, a first memory 502, and a first communication bus 503;

[0241] The first communication bus 503 is used to implement a communication connection between the first processor 501 and the first memory 502;

[0242] The first processor 501 is configured to execute one or more computer programs stored in the first memory 502 to implement a downlink transmission control method applied to the network device.

[0243] An embodiment of the present application provides a terminal. Figure 8 The structure diagram of a terminal provided by an embodiment of the present application Figure 1 . As Figure 8 shown, in an embodiment of the present application, the terminal includes:

[0244] A communication module 601, configured to receive the number of repetitions of downlink transmission configured by the network device based on first information; wherein, the first information includes satellite beam information and / or first auxiliary information reported by the terminal; and / or, report second auxiliary information to the network device for the network device to adjust the downlink frequency division strategy.

[0245] In an embodiment of the present application, the satellite beam information includes at least one of the following: the number of satellite beams; the transmit power allocated to each satellite beam; the coverage range of the satellite beam covering the terminal.

[0246] In an embodiment of the present application, the first auxiliary information includes at least one of the following: the communication environment of the terminal; the distance between the terminal and the beam coverage edge; the terminal capabilities of the terminal; the importance of the data expected to be received by the terminal.

[0247] In an embodiment of the present application, the second auxiliary information includes at least one of the following: the actual received power; the idle frequency band information with signal quality greater than a threshold within a first time period monitored, including at least one of the start frequency, end frequency, interval, and packet reception situation.

[0248] In an embodiment of the present application, the communication module 601 is further configured to perform at least one of the following:

[0249] In the case of receiving downlink data before the number of receptions reaches the configured number of repetitions, send a first response to the network device to instruct the network device to stop repeatedly sending the downlink data;

[0250] In the case that the downlink data is received when the number of receptions reaches the configured number of repetitions, send a second response to the network device to indicate that the network device has received the downlink data;

[0251] In the case that the downlink data is not successfully received after reaching the configured number of repetitions, send a third response to the network device to indicate that the network device has not received the downlink data.

[0252] Figure 9 The structure diagram of a terminal provided by an embodiment of the present application Figure 2 As Figure 9 shown, in the embodiment of the present application, the terminal includes: a second processor 701, a second memory 702, and a second communication bus 703;

[0253] The second communication bus 703 is used to implement a communication connection between the second processor 701 and the second memory 702;

[0254] The second processor 701 is used to execute one or more computer programs stored in the second memory 702 to implement a downlink transmission control method applied to the terminal.

[0255] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the above-mentioned downlink transmission control method is implemented. The computer-readable storage medium may be a volatile memory, such as a random access memory (Random-Access Memory, RAM); or a non-volatile memory, such as a read-only memory (Read-Only Memory, ROM), a flash memory, a hard disk drive (Hard Disk Drive, HDD), or a solid-state drive (Solid-State Drive, SSD); it may also be a respective device including one or any combination of the above memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc.

[0256] Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, the present application may adopt the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories and optical memories, etc.) containing computer-usable program codes.

[0257] This application is described with reference to the schematic flow diagrams and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the schematic flow diagrams and / or block diagrams, and the combinations of flows and / or blocks in the schematic flow diagrams and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices produce means for implementing the functions specified in one or more of the flows and / or blocks in the schematic flow Figure 1 one or more of the flows Figure 1 or blocks specified in the one or more blocks.

[0258] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one or more of the flows and / or blocks in the schematic flow Figure 1 one or more of the flows Figure 1 or blocks specified in the one or more blocks.

[0259] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more of the flows and / or blocks in the schematic flow Figure 1 one or more of the flows Figure 1 or blocks specified in the one or more blocks.

[0260] As described above, this is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A downlink transmission control method, characterized in that, applied to a network device, the method includes: configuring the number of repetitions of downlink transmission for a terminal based on first information; wherein, the first information includes satellite beam information and / or first auxiliary information reported by the terminal; and / or, adjusting the downlink frequency division strategy based on second information; wherein, the second information includes at least one of the following: the number of satellite beams, the power limit requirement, and second auxiliary information reported by the terminal.

2. The method according to claim 1, characterized in that, the configuring the number of repetitions of downlink transmission for a terminal based on first information includes: determining N sets of repetition numbers based on the satellite beam information and / or the first auxiliary information; N is a natural number greater than or equal to 1, and each set of repetition numbers contains at least one number of repetitions of downlink transmission determined by at least one piece of information included in the satellite beam information and / or the first auxiliary information; in the case where N is equal to 1, selecting one number of repetitions of downlink transmission from the determined one set of repetition numbers for configuration for the terminal; or, in the case where N is greater than 1, determining the intersection of the N sets of repetition numbers; in the case where the intersection is a non-empty set, selecting one number of repetitions of downlink transmission from the intersection for configuration for the terminal; in the case where the intersection is an empty set, selecting one number of repetitions of the next transmission from the N sets of repetition numbers for configuration for the terminal.

3. The method according to claim 1 or 2, characterized in that, the satellite beam information includes at least one of the following: the number of satellite beams; the transmit power allocated to each satellite beam; the coverage range of the satellite beam covering the terminal.

4. The method according to claim 3, characterized in that, when the transmit power allocated to each satellite beam is the same, the number of repetitions of downlink transmission satisfies at least one of the following conditions: positively correlated with the distance from the first beam reference point to the second beam reference point; wherein, the first beam reference point is the reference point of the satellite beam covering the terminal, and the second beam reference point is the reference point of the central satellite beam, and the central satellite beam is the satellite beam in the vertical direction of the satellite; positively correlated with the number of satellite beams; positively correlated with the coverage range of the satellite beam covering the terminal.

5. The method according to claim 3, characterized in that, when the transmit power of at least one satellite beam is different from that of other satellite beams, the number of repetitions of downlink transmission is negatively correlated with the transmit power of the satellite beam covering the terminal.

6. The method according to claim 1 or 2, characterized in that, the first auxiliary information includes at least one of the following: the communication environment of the terminal; the distance between the terminal and the beam coverage edge; the terminal capability of the terminal; the importance of the data expected to be received by the terminal.

7. The method according to claim 6, characterized in that, the number of repetitions of downlink transmission satisfies at least one of the following conditions: negatively correlated with the communication environment of the terminal; negatively correlated with the distance between the terminal and the beam coverage edge; negatively correlated with the terminal capability of the terminal; It is positively correlated with the importance of the data expected to be received by the terminal.

8. The method according to claim 1, wherein, the method further includes: when the terminal cell changes, updating the number of repetitions of downlink transmission for the terminal.

9. The method according to claim 8, wherein, updating the number of repetitions of downlink transmission for the terminal includes at least one of the following: in the case where the change of the terminal cell is caused by the change of the satellite beam under the same satellite, based on the change of the transmission power of the satellite beam covering the terminal and / or the distance from the central satellite beam before and after the cell change, updating the number of repetitions of downlink transmission for the terminal; in the case where the change of the terminal cell is caused by the change of the satellite, based on the change of the satellite orbit altitude and / or the satellite service area before and after the cell change, updating the number of repetitions of downlink transmission for the terminal; in the case where the change of the terminal cell is caused by the movement of the terminal, updating the number of repetitions of downlink transmission for the terminal based on the cell change information reported by the terminal.

10. The method according to claim 9, wherein, the change of the terminal cell includes cell handover. Before the terminal cell handover, the terminal camps on the first cell, and after the handover, it camps on the second cell. The cell change information includes at least one of the following: the cell identifiers corresponding to the first cell and the second cell respectively; the satellite identifier information corresponding to the first cell and the second cell respectively; the beam information corresponding to the first cell and the second cell respectively.

11. The method according to claim 1, wherein, configuring the number of repetitions of downlink transmission for the terminal in at least one of the following ways: broadcast message; downlink control information DCI; radio resource control RRC signaling; media access control MAC control element.

12. The method according to claim 1, wherein, the method further includes: updating the number of repetitions of downlink transmission for the terminal based on at least one of the following information: the change information of the satellite beam, including at least one of the moving speed of the satellite beam and the change of the coverage range; the update request of the terminal; the change information of the network node; the service duration information of the satellite and / or the satellite beam.

13. The method according to claim 1, wherein, the second auxiliary information includes at least one of the following: actual received power; idle frequency band information with signal quality greater than the threshold monitored within the first time period, including at least one of the starting frequency, ending frequency, interval, and packet reception situation.

14. The method according to claim 1, wherein, the method further includes: configuring the effective usage time corresponding to the number of repetitions of downlink transmission for the terminal.

15. A downlink transmission control method, wherein, applied to a terminal, the method includes: receiving the number of repetitions of downlink transmission configured by a network device based on first information; wherein, the first information includes satellite beam information and / or first auxiliary information reported by the terminal; and / or, reporting second auxiliary information to the network device for the network device to adjust the downlink frequency division strategy.

16. The method according to claim 15, wherein, the satellite beam information includes at least one of the following: the number of satellite beams; the transmission power allocated to each satellite beam; the coverage range of the satellite beam covering the terminal.

17. The method according to claim 15, wherein, the first auxiliary information includes at least one of the following: the communication environment of the terminal; the distance between the terminal and the beam coverage edge; the terminal capabilities of the terminal; the importance level of the data expected to be received by the terminal.

18. The method according to claim 15, wherein, the second auxiliary information includes at least one of the following: the actual received power; idle frequency band information with signal quality greater than a threshold within a first time period that is monitored, including at least one of the start frequency, end frequency, interval, and packet reception situation.

19. The method according to claim 15, wherein, the method further includes at least one of the following: when receiving downlink data before the number of receptions reaches the configured number of repetitions, sending a first response to the network device to instruct the network device to stop repeatedly sending the downlink data; when receiving the downlink data when the number of receptions reaches the configured number of repetitions, sending a second response to the network device to instruct the network device that the downlink data has been received; when not successfully receiving the downlink data after reaching the configured number of repetitions, sending a third response to the network device to instruct the network device that the downlink data has not been received.

20. A network device, wherein, it includes: a first processor, a first memory, and a first communication bus; the first communication bus is used to implement a communication connection between the first processor and the first memory; the first processor is used to execute one or more computer programs stored in the first memory to implement the downlink transmission control method according to any one of claims 1 - 14.

21. A terminal, wherein, it includes: a second processor, a second memory, and a second communication bus; the second communication bus is used to implement a communication connection between the second processor and the second memory; the second processor is used to execute one or more computer programs stored in the second memory to implement the downlink transmission control method according to any one of claims 15 - 19.

22. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed, it implements the downlink transmission control method according to any one of claims 1 - 19.

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