Information processing and indicating method and apparatus for satellite system, and storage medium

Abstract

The present disclosure relates to the technical field of communication, and provides an information processing and indicating method and apparatus for a satellite system, and a storage medium. The method comprises: receiving first information sent by a network device; and, on the basis of the first information, determining information of a TDD frame, the first information being used for indicating TDD uplink and downlink slot configuration patterns, and TDD uplink and downlink slot configuration patterns of two adjacent network devices at the same frequency being different.

Description

Information processing and indication method, device and storage medium for satellite system

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on March 4, 2024, with application number 202410240154.1 and application name “Information processing, indication method, device and storage medium for satellite systems”, the entire content of which is incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to an information processing and indication method, device, and storage medium for a satellite system. Background Art

[0003] The time division duplex (TDD) frame structure supports a maximum period of 20ms and consists of two 10ms radio frames concatenated, each configured independently. In satellite scenarios, transmission latency is long, and all satellites are frame-synchronized. For two adjacent satellites, when satellite 1 transmits a downlink signal through its corresponding network equipment, adjacent satellite 2 may receive the downlink signal from satellite 1 during its uplink timeslot. Therefore, when co-channeling, interference may occur between the network equipment of satellite 1 and that of satellite 2. Summary of the Invention

[0004] The embodiments of the present disclosure provide an information processing and indication method, apparatus, and storage medium to reduce interference between two adjacent network devices on the same frequency.

[0005] In a first aspect, an embodiment of the present disclosure provides an information processing method for a satellite system, applied to a terminal, comprising:

[0006] receiving first information sent by a network device;

[0007] Determine information of the TDD frame according to the first information;

[0008] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0009] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0010] The flexible time slot includes:

[0011] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0012] Number of downlink symbols, guard interval; or

[0013] Guard interval.

[0014] In some embodiments, the first information includes:

[0015] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0016] The second indication is used to indicate the number of downlink time slots in the entire downlink-uplink DL-UL transmission model cycle;

[0017] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0018] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0019] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0020] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0021] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0022] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0023] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0024] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0025] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0026] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0027] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0028] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0029] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0030] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0031] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0032] In some embodiments, determining the time division duplex (TDD) frame information according to the first information includes:

[0033] receiving second information sent by the network device, wherein the second information includes a synchronization signal / physical broadcast channel signal block (Synchronization Signal and PBCH block, SSB);

[0034] determining frame header information of the TDD frame according to the second information;

[0035] The information of the TDD frame is acquired according to the first information and the frame header information.

[0036] In a second aspect, an embodiment of the present disclosure provides a satellite system-oriented information indication method, which is applied to a network device, including:

[0037] Sending first information to the terminal;

[0038] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0039] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0040] The flexible time slot includes:

[0041] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0042] Number of downlink symbols, guard interval; or

[0043] Guard interval.

[0044] In some embodiments, the first information includes:

[0045] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0046] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0047] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0048] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0049] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0050] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0051] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0052] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0053] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0054] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0055] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0056] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0057] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0058] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0059] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0060] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0061] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0062] In some embodiments, the method further comprises:

[0063] Send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame, and the second information includes SSB.

[0064] In a third aspect, an embodiment of the present disclosure provides an information processing device for a satellite system, which is applied to a terminal and includes: a memory, a transceiver, and a processor:

[0065] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0066] receiving first information sent by a network device;

[0067] Determine information of the TDD frame according to the first information;

[0068] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0069] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0070] The flexible time slot includes:

[0071] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0072] Number of downlink symbols, guard interval; or

[0073] Guard interval.

[0074] In some embodiments, the first information includes:

[0075] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0076] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0077] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0078] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0079] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0080] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0081] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0082] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0083] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0084] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0085] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0086] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0087] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0088] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0089] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0090] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0091] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0092] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0093] receiving second information sent by the network device, wherein the second information includes SSB;

[0094] determining frame header information of the TDD frame according to the second information;

[0095] The information of the TDD frame is acquired according to the first information and the frame header information.

[0096] In a fourth aspect, an embodiment of the present disclosure provides an information indication device for a satellite system, which is applied to a network device, including: a memory, a transceiver, and a processor:

[0097] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0098] Sending first information to the terminal;

[0099] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0100] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0101] The flexible time slot includes:

[0102] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0103] Number of downlink symbols, guard interval; or

[0104] Guard interval.

[0105] In some embodiments, the first information includes:

[0106] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0107] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0108] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0109] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0110] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0111] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0112] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0113] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0114] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0115] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0116] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0117] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0118] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0119] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0120] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0121] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0122] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0123] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0124] Send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame, and the second information includes SSB.

[0125] In a fifth aspect, an embodiment of the present disclosure provides an information processing device for a satellite system, applied to a terminal, including:

[0126] A first receiving unit, configured to receive first information sent by a network device;

[0127] a first processing unit, configured to determine information of a TDD frame according to the first information;

[0128] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0129] In a sixth aspect, an embodiment of the present disclosure provides an information indication device for a satellite system, applied to a network device, including:

[0130] A first sending unit, configured to send first information to a terminal;

[0131] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0132] In a seventh aspect, an embodiment of the present disclosure further provides a processor-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the information processing or indication method described above are implemented.

[0133] In an eighth aspect, an embodiment of the present disclosure further provides a computer program product, comprising computer instructions, which, when executed by a processor, implement the steps in the information processing or indication method described above.

[0134] In an embodiment of the present disclosure, a terminal receives first information sent by a network device and determines information of a TDD frame based on the first information. Since the first information indicates a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two co-frequency adjacent network devices are different, the two co-frequency adjacent network devices can adopt different TDD frame structures, thereby reducing interference between the two co-frequency adjacent network devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0135] FIG1 is a flow chart of an information processing method for a satellite system provided by an embodiment of the present disclosure;

[0136] FIG2 is a schematic diagram of a TDD uplink and downlink time slot configuration pattern in an embodiment of the present disclosure;

[0137] FIG3 is a schematic diagram of a flexible time slot according to an embodiment of the present disclosure;

[0138] FIG4 is a schematic diagram of first information in an embodiment of the present disclosure;

[0139] FIG5 is a schematic diagram of a TDD frame structure according to an embodiment of the present disclosure;

[0140] FIG6 is a second schematic diagram of a TDD frame structure according to an embodiment of the present disclosure;

[0141] FIG7 is a third schematic diagram of a TDD frame structure according to an embodiment of the present disclosure;

[0142] FIG8 is a fourth schematic diagram of a TDD frame structure according to an embodiment of the present disclosure;

[0143] FIG9 is a flowchart of a satellite system-oriented information indication method provided by an embodiment of the present disclosure;

[0144] FIG10 is a structural diagram of a satellite system-oriented information indication device according to an embodiment of the present disclosure;

[0145] FIG11 is a structural diagram of a satellite system-oriented information processing device according to an embodiment of the present disclosure;

[0146] FIG12 is a second structural diagram of the information processing device for a satellite system provided in an embodiment of the present disclosure;

[0147] FIG13 is a second structural diagram of the information indication device for a satellite system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0148] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0149] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0150] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0151] The embodiments of the present disclosure provide an information processing and indication method and apparatus for reducing interference between two adjacent network devices on the same frequency.

[0152] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0153] Referring to FIG. 1 , FIG. 1 is a flowchart of a satellite system-oriented information processing method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following steps:

[0154] Step 101: Receive first information sent by a network device.

[0155] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0156] In the disclosed embodiment, the TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot. The flexible time slot includes: number of downlink symbols, guard interval and number of uplink symbols; or number of downlink symbols, guard interval; or guard interval.

[0157] Figure 2 shows a schematic diagram of the TDD uplink and downlink timeslot configuration. "U" represents an uplink timeslot, "D" represents a downlink timeslot, and "F" represents a flexible timeslot. Flexible timeslots can be configured as needed or remain unused as guard intervals between uplink and downlink timeslots.

[0158] As shown in FIG3 , the flexible time slot may include three parts: the number of downlink symbols, a guard interval (GAP), and the number of uplink symbols. It may also include the number of downlink symbols and the GAP, or include the guard interval entirely, as required.

[0159] The first information includes:

[0160] 1. A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0161] Among them, the relative position relationship may include: the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or, the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0162] In the embodiments of the present disclosure, to distinguish the TDD frame structure, a high-layer parameter (e.g., dl-UL-indicator ENUMERATED {0, 1}) is added to the radio resource control (RRC) message element TDD-UL-DL-Pattern to indicate whether the uplink time slot is first or the downlink time slot is first. For example, 0 indicates that the downlink time slot is first and 1 indicates that the uplink time slot is first; or 0 indicates that the uplink time slot is first and 1 indicates that the downlink time slot is first. The downlink time slot is first configured by default.

[0163] 2. The second indication (nrofDownlinkSlots) is used to indicate the number of downlink time slots in the period (dl-UL-TransmissionPeriodicity) of the entire downlink-uplink (DL-UL) transmission model.

[0164] 3. The third indication (nrofDownlinkSymbols) is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period.

[0165] If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern, the third indication is used to indicate the number of downlink symbols in the time slot after the last continuous downlink time slot within the cycle of the entire DL-UL transmission model, for example, it may include symbols that share the same time slot as the downlink time slot and the uplink time slot, and symbols that share the same time slot as the flexible time slot; otherwise, it is used to indicate the number of downlink symbols within the cycle of the entire DL-UL transmission model.

[0166] 4. The fourth indication (nrofUplinkSlots) is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model.

[0167] 5. The fifth indication (nrofUplinkSymbols) is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0168] If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern, the fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model; otherwise, it is used to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0169] As shown in FIG4 , in an embodiment of the present disclosure, the first information described above can be defined by the information units TDD-UL-DL-ConfigCommon and TDD-UL-DL-Pattern, which can also be referred to as uplink and downlink configuration. The meaning of each parameter in FIG4 can refer to the description of the aforementioned embodiment.

[0170] In the disclosed embodiment, in order not to affect the downlink initial synchronization process, if the TDD frame structure period is 10ms, the time length of the uplink time slot is less than 5ms, or if the TDD frame structure period is 20ms, the time length of the uplink time slot is less than 10ms. Specifically, in order to ensure the existence of the synchronization signal / physical broadcast channel signal block (Synchronization Signal and PBCH block, SSB) burst in the TDD frame structure. For a TDD frame structure with a period of 10ms, the uplink time slot is less than 5ms; for a TDD frame structure with a period of 20ms, the uplink time slot is less than 10ms.

[0171] Figure 5 shows the uplink and downlink time slot configuration for a 10ms TDD frame structure. For a 10ms TDD frame structure, the uplink time slot is less than 5ms. Figures 6 and 7 show the uplink and downlink time slot configuration for a 20ms TDD frame structure. For a 20ms TDD frame structure, the uplink time slot is less than 10ms.

[0172] In the embodiment of the present disclosure, the first information may be carried in a system information block (SIB). The network device may be a network device arranged in a satellite network or a high-altitude platform, such as a base station.

[0173] Step 102: Determine TDD frame information according to the first information.

[0174] In this step, the terminal may receive the second information sent by the network device and determine the frame header information of the TDD frame according to the second information. Thereafter, the terminal obtains the information of the TDD frame according to the first information and the frame header information.

[0175] For example, the second information may be a synchronization signal / physical broadcast channel signal block (Synchronization Signal and PBCH block, SSB). The terminal determines the physical broadcast channel (PBCH) by parsing the SSB and decodes the PBCH. The PBCH includes a master information block (MIB) and other information related to the SSB transmission time (additional timing related PBCH payload bits). On the PBCH, the terminal receives the MIB message, obtains the SSB index (SSB index) and the half-frame indication, and determines the frame header information of the TDD frame. Afterwards, the system information block (SIB) is parsed, and combined with the frame header information, the TDD uplink and downlink time slot configuration pattern is obtained, and then the TDD frame structure, uplink and downlink time slot configuration information, etc. are obtained.

[0176] In an embodiment of the present disclosure, a terminal receives first information sent by a network device and determines information of a TDD frame based on the first information. Since the first information indicates a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two co-frequency adjacent network devices are different, the two co-frequency adjacent network devices can adopt different TDD frame structures, thereby reducing interference between the two co-frequency adjacent network devices.

[0177] For example, when a satellite communication network is networked using TDD on the same frequency, different TDD frame structures are used between two adjacent satellites on the same orbit, thereby reducing interference between the two adjacent satellites on the same frequency.

[0178] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0179] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0180] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0181] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0182] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0183] For example, if the flexible time slot in the TDD uplink and downlink time slot configuration pattern of the second network device does not include the number of downlink symbols, or the flexible time slot is located before the downlink time slot, the actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: the downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0184] For example, if in the TDD uplink and downlink time slot configuration pattern of the second network device, the flexible time slot is located after the downlink time slot and the flexible time slot includes the number of downlink symbols, the actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: the downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slot composed of the number of downlink symbols of the flexible time slot in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0185] For example, in satellite applications, the orbital altitudes of low Earth orbit (LEO) satellites range from 500km to 1500km, the orbital altitudes of medium Earth orbit (MEO) satellites are 10,000km, and the orbital altitudes of high Earth orbit satellites are 35,786km. Inter-satellite transmission distances are also very long. For example, with an orbital altitude of 600km and 60 LEO satellites per orbital plane, the inter-satellite distance is approximately 730km, and the inter-satellite link propagation delay, Tdelay, is approximately 2.4ms. When a satellite communication system employs TDD, adjacent satellites in the same orbit use different TDD uplink and downlink time slot patterns. As shown in Figure 8, if the uplink time slot length, Tul, of satellite 2 is less than 2.4ms, the downlink signal from satellite 1 will not interfere with the uplink of satellite 2. If the downlink end time of satellite 2 is more than 2.4ms away from the uplink start time, Tgap, of satellite 1, the downlink signal from satellite 2 will not interfere with the uplink of satellite 1, thereby reducing inter-satellite interference.

[0186] 9 , which is a flowchart of a satellite system-oriented information processing method provided by an embodiment of the present disclosure, and applied to a network device, includes the following steps:

[0187] Step 901: Send first information to a terminal;

[0188] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0189] The first information includes:

[0190] 1. A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0191] In the disclosed embodiment, the TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot. The flexible time slot includes: number of downlink symbols, guard interval and number of uplink symbols; or number of downlink symbols, guard interval; or guard interval.

[0192] Among them, the relative position relationship may include: the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or, the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0193] In an embodiment of the present disclosure, in order to distinguish the TDD frame structure, an indication high-level parameter (e.g., dl-UL-indicator ENUMERATED {0, 1}) is added to the radio resource control (RRC) message unit TDD-UL-DL-Pattern to indicate whether the uplink time slot comes first or the downlink time slot comes first. For example, 0 is used to indicate that the downlink time slot comes first, and 1 is used to indicate that the uplink time slot comes first; or, 0 is used to indicate that the uplink time slot comes first, and 1 is used to indicate that the downlink time slot comes first; the default configuration is that the downlink time slot comes first.

[0194] 2. The second indication (nrofDownlinkSlots) is used to indicate the number of downlink time slots in the period (dl-UL-TransmissionPeriodicity) of the entire downlink-uplink DL-UL transmission model.

[0195] 3. The third indication (nrofDownlinkSymbols) is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period.

[0196] If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern, the third indication is used to indicate the number of downlink symbols in the time slot after the last continuous downlink time slot within the cycle of the entire DL-UL transmission model, for example, it may include symbols that share the same time slot as the downlink time slot and the uplink time slot, and symbols that share the same time slot as the flexible time slot; otherwise, it is used to indicate the number of downlink symbols within the cycle of the entire DL-UL transmission model.

[0197] 4. The fourth indication (nrofUplinkSlots) is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model.

[0198] 5. The fifth indication (nrofUplinkSymbols) is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0199] If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern, the fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model; otherwise, it is used to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0200] In the disclosed embodiment, to ensure that the downlink initial synchronization process is not affected, the uplink timeslot is less than 5ms if the TDD frame period is 10ms, or less than 10ms if the TDD frame period is 20ms. Specifically, to ensure the presence of SSB bursts in the TDD frame structure, the uplink timeslot is less than 5ms for a 10ms TDD frame structure and less than 10ms for a 20ms TDD frame structure.

[0201] In the embodiment of the present disclosure, the first information may be carried in the SIB. For more explanations of the first information, please refer to the description of the aforementioned method embodiment.

[0202] In some embodiments, the network device may further send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame. The second information may be, for example, SSB.

[0203] The network device may be a network device arranged in a satellite network or a high-altitude platform, such as a base station.

[0204] In an embodiment of the present disclosure, a terminal receives first information sent by a network device and determines information of a TDD frame based on the first information. Since the first information indicates a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two co-frequency adjacent network devices are different, the two co-frequency adjacent network devices can adopt different TDD frame structures, thereby reducing interference between the two co-frequency adjacent network devices.

[0205] The technical solutions provided by the embodiments of the present disclosure can be applicable to a variety of systems, for example, TDD-related systems, TDD systems based on 5G and subsequent evolution systems, especially TDD terrestrial mobile communication systems and satellite communication systems based on 5G.

[0206] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0207] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0208] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoding transmission, or beamforming transmission.

[0209] As shown in FIG10 , the information indication device for a satellite system according to an embodiment of the present disclosure is applied to a network device and includes: a processor 1000 configured to read a program in a memory 1020 and execute the following process:

[0210] Sending first information to the terminal;

[0211] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0212] The transceiver 1010 is configured to receive and send data under the control of the processor 1000 .

[0213] In FIG10 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1000 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1010 may be a plurality of components, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 when performing operations.

[0214] The processor 1000 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0215] The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 when performing operations.

[0216] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0217] The flexible time slot includes:

[0218] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0219] Number of downlink symbols, guard interval; or

[0220] Guard interval.

[0221] In some embodiments, the first information includes:

[0222] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0223] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0224] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0225] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0226] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0227] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0228] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0229] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0230] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0231] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0232] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0233] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0234] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0235] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0236] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0237] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0238] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0239] In some embodiments, the processor 1000 is further configured to read the program and execute the following steps:

[0240] Send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame, and the second information includes SSB.

[0241] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0242] As shown in FIG11 , the information processing device for a satellite system according to an embodiment of the present disclosure, applied to a terminal, includes: a processor 1100 configured to read a program in a memory 1120 and execute the following processes:

[0243] receiving first information sent by a network device;

[0244] Determine information of the TDD frame according to the first information;

[0245] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0246] The transceiver 1110 is configured to receive and send data under the control of the processor 1100 .

[0247] In FIG11 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by processor 1100 and memory represented by memory 1120, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0248] The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.

[0249] The processor 1100 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0250] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0251] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0252] The flexible time slot includes:

[0253] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0254] Number of downlink symbols, guard interval; or

[0255] Guard interval.

[0256] In some embodiments, the first information includes:

[0257] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0258] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0259] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0260] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0261] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0262] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0263] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0264] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0265] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0266] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0267] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0268] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0269] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0270] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0271] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0272] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0273] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0274] In some embodiments, the processor 1100 is further configured to read the program and execute the following steps:

[0275] receiving second information sent by the network device, wherein the second information includes SSB;

[0276] determining frame header information of the TDD frame according to the second information;

[0277] The information of the TDD frame is acquired according to the first information and the frame header information.

[0278] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0279] As shown in FIG12 , the information processing device for a satellite system according to an embodiment of the present disclosure, applied to a terminal, includes:

[0280] The first receiving unit 1201 is configured to receive first information sent by a network device;

[0281] A first processing unit 1202 is configured to determine TDD frame information according to the first information;

[0282] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0283] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0284] The flexible time slot includes:

[0285] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0286] Number of downlink symbols, guard interval; or

[0287] Guard interval.

[0288] In some embodiments, the first information includes:

[0289] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0290] The second indication is used to indicate the number of downlink time slots in the entire downlink-uplink DL-UL transmission model cycle;

[0291] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0292] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0293] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0294] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0295] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0296] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0297] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0298] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0299] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0300] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0301] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0302] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0303] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0304] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0305] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0306] In some embodiments, the first processing unit includes:

[0307] A first receiving subunit is configured to receive second information sent by the network device, wherein the second information includes SSB;

[0308] a first processing subunit, configured to determine frame header information of the TDD frame according to the second information;

[0309] The second processing subunit is configured to obtain information of the TDD frame according to the first information and the frame header information.

[0310] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0311] As shown in FIG13 , the information indication device for a satellite system according to an embodiment of the present disclosure is applied to a network device and includes:

[0312] The first sending unit 1301 is configured to send first information to a terminal;

[0313] The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

[0314] In some embodiments, the TDD uplink and downlink time slot configuration pattern includes: uplink time slots, downlink time slots and flexible time slots;

[0315] The flexible time slot includes:

[0316] Number of downlink symbols, guard interval, and number of uplink symbols; or

[0317] Number of downlink symbols, guard interval; or

[0318] Guard interval.

[0319] In some embodiments, the first information includes:

[0320] A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern;

[0321] The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model;

[0322] A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0323] A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model;

[0324] The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

[0325] In some embodiments, the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes:

[0326] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or

[0327] The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

[0328] In some embodiments, if the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0329] The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period;

[0330] The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

[0331] In some embodiments, if the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

[0332] In some embodiments, for two adjacent network devices on the same frequency, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern:

[0333] In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay;

[0334] The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes:

[0335] a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or

[0336] The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

[0337] In some embodiments, the apparatus may further comprise:

[0338] The second sending unit is used to send second information to the terminal, wherein the second information is used to determine the frame header information of the TDD frame, and the second information includes SSB.

[0339] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0340] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0341] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a computer software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0342] An embodiment of the present disclosure further provides a communication device, comprising: a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned information processing or indication method when executing the program.

[0343] The embodiments of the present disclosure also provide a computer program product, including computer instructions. When the computer instructions are executed by a processor, the various processes of the above-mentioned information processing or indication method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be described here.

[0344] The embodiment of the present disclosure also provides a processor-readable storage medium, on which a program is stored. When the program is executed by the processor, the various processes of the above-mentioned information processing or indication method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here. Among them, the readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (Magneto Optical, MO), etc.), optical storage (such as compact discs (CD), digital video discs (DVD), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor storage (such as ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND (Non-volatile Memory Device) FLASH), solid-state drives (SSD)), etc.

[0345] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0346] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD-ROM), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0347] The embodiments of the present disclosure are described above in conjunction with the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present disclosure, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present disclosure and the claims, all of which are protected by the present disclosure.

Claims

1. A satellite system-oriented information processing method, applied to a terminal, comprising: receiving first information sent by a network device; Determine information of a time division duplex (TDD) frame according to the first information; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

2. The method according to claim 1, wherein The TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot; The flexible time slot includes: Number of downlink symbols, guard interval, and number of uplink symbols; or Number of downlink symbols, guard interval; or Guard interval.

3. The method according to claim 1, wherein The first information includes: A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern; The second indication is used to indicate the number of downlink time slots in the entire downlink-uplink DL-UL transmission model cycle; A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model; The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

4. The method according to claim 3, wherein: The relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes: The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

5. The method according to claim 3, wherein If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern: The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

6. The method according to any one of claims 2 to 5, wherein: If the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

7. The method according to any one of claims 2 to 5, wherein: For two co-frequency adjacent network devices, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern: In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay; The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

8. The method according to claim 1, wherein The determining the information of the time division duplex (TDD) frame according to the first information includes: receiving second information sent by the network device, wherein the second information includes a synchronization signal / physical broadcast channel signal block SSB; determining frame header information of the TDD frame according to the second information; The information of the TDD frame is acquired according to the first information and the frame header information.

9. A satellite system-oriented information indication method, applied to network equipment, comprising: Sending first information to the terminal; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

10. The method according to claim 9, wherein: The TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot; The flexible time slot includes: Number of downlink symbols, guard interval, and number of uplink symbols; or Number of downlink symbols, guard interval; or Guard interval.

11. The method according to claim 9, wherein The first information includes: A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern; The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model; A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model; The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

12. The method according to claim 11, wherein The relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes: The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

13. The method according to claim 11, wherein If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern: The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

14. The method according to any one of claims 10 to 13, wherein: If the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

15. The method according to any one of claims 10 to 13, wherein: For two co-frequency adjacent network devices, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern: In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay; The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

16. The method according to claim 9, wherein The method further comprises: Send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame, and the second information includes SSB.

17. An information processing device for a satellite system, applied to a terminal, comprising: Memory, transceiver, processor: Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: receiving first information sent by a network device; Determine information of the TDD frame according to the first information; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

18. The device according to claim 17, wherein The TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot; The flexible time slot includes: Number of downlink symbols, guard interval, and number of uplink symbols; or Number of downlink symbols, guard interval; or Guard interval.

19. The device according to claim 17, wherein The first information includes: A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern; The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model; A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model; The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

20. The device according to claim 19, wherein The relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes: The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

21. The apparatus according to claim 19, wherein If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern: The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

22. The device according to any one of claims 17 to 21, wherein: If the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

23. The device according to any one of claims 17 to 21, wherein: For two co-frequency adjacent network devices, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern: In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay; The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

24. The apparatus according to claim 17, wherein The processor is further configured to read the computer program in the memory and perform the following operations: receiving second information sent by the network device, wherein the second information includes SSB; determining frame header information of the TDD frame according to the second information; The information of the TDD frame is acquired according to the first information and the frame header information.

25. An information indication device for a satellite system, applied to a network device, comprising: Memory, transceiver, processor: Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Sending first information to the terminal; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

26. The device according to claim 25, wherein The TDD uplink and downlink time slot configuration pattern includes: uplink time slot, downlink time slot and flexible time slot; The flexible time slot includes: Number of downlink symbols, guard interval, and number of uplink symbols; or Number of downlink symbols, guard interval; or Guard interval.

27. The apparatus according to claim 25, wherein The first information includes: A first indication is used to indicate the relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern; The second indication is used to indicate the number of downlink time slots in the cycle of the entire DL-UL transmission model; A third indication is used to indicate the number of downlink symbols in the entire DL-UL transmission model period, or to indicate the number of downlink symbols in a time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; A fourth indication is used to indicate the number of uplink time slots in the cycle of the entire DL-UL transmission model; The fifth indication is used to indicate the number of uplink symbols in the time slot before the end of the frame period within the period of the entire DL-UL transmission model, or to indicate the number of uplink symbols in the time slot before the first consecutive uplink time slot within the period of the entire DL-UL transmission model.

28. The apparatus according to claim 27, wherein The relative position relationship between the uplink time slot and the downlink time slot in the TDD uplink and downlink time slot configuration pattern includes: The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern; or The position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is located after the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern.

29. The apparatus according to claim 27, wherein If the position of the uplink time slot in the TDD uplink and downlink time slot configuration pattern is before the position of the downlink time slot in the TDD uplink and downlink time slot configuration pattern: The third indication is used to indicate the number of downlink symbols in the time slot after the last consecutive downlink time slot in the entire DL-UL transmission model period; The fifth indication is used to indicate the number of uplink symbols in a time slot before the end of a frame period within the period of the entire DL-UL transmission model.

30. The device according to any one of claims 26 to 29, wherein If the TDD frame structure period is 10 ms, the time length of the uplink time slot is less than 5 ms, or if the TDD frame structure period is 20 ms, the time length of the uplink time slot is less than 10 ms.

31. The device according to any one of claims 26 to 29, wherein: For two co-frequency adjacent network devices, if the downlink time slot of the first network device is located before the uplink time slot in the TDD uplink and downlink time slot configuration pattern, and the uplink time slot of the second network device is located before the downlink time slot in the TDD uplink and downlink time slot configuration pattern: In the TDD uplink and downlink time slot configuration pattern of the second network device, the duration of the uplink time slot is less than the inter-satellite link propagation delay, and the time difference between the end time of the actual downlink time slot and the start time of the uplink time slot in the TDD uplink and downlink time slot configuration pattern of the first network device is greater than the inter-satellite link propagation delay; The actual downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device includes: a downlink time slot in the TDD uplink and downlink time slot configuration pattern of the second network device, or The downlink time slots in the TDD uplink and downlink time slot configuration pattern of the second network device and the downlink time slots composed of the downlink symbols of the flexible time slots in the TDD uplink and downlink time slot configuration pattern of the second network device.

32. The apparatus according to claim 25, wherein The processor is further configured to read the computer program in the memory and perform the following operations: Send second information to the terminal, wherein the second information is used to determine frame header information of the TDD frame, and the second information includes SSB.

33. An information processing device for a satellite system, applied to a terminal, comprising: A first receiving unit, configured to receive first information sent by a network device; a first processing unit, configured to determine information of a TDD frame according to the first information; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

34. An information indication device for a satellite system, applied to a network device, comprising: A first sending unit, configured to send first information to a terminal; The first information is used to indicate a TDD uplink and downlink time slot configuration pattern, and the TDD uplink and downlink time slot configuration patterns of two adjacent network devices on the same frequency are different.

35. A processor-readable storage medium, wherein: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method according to any one of claims 1 to 8, or to execute the method according to any one of claims 9 to 16.

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