Communication method and related apparatus

Abstract

A communication method and a related apparatus. A satellite base station may first determine a polarization support capability of a terminal, and then may communicate with the terminal on the basis of the polarization support capability of the terminal. In scenarios where terminals have diversified polarization support capabilities, if a satellite base station knows a polarization support capability of a terminal, more flexible communication can be implemented by means of better using the polarization support capability of the terminal.

Description

Communication methods and related devices

[0001] This application claims priority to Chinese Patent Application No. 202410972020.9, filed on July 18, 2024, entitled "Communication Method and Related Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, specifically to communication methods and related devices. Background Technology

[0003] Satellite communication offers unique advantages over terrestrial communication, such as providing wider coverage. Satellite base stations in satellite communication systems are less susceptible to damage from natural disasters or external forces. In the future, 5G / 6G communication integrating satellite communication can provide communication services to areas such as oceans and forests that are not covered by terrestrial communication networks. The integration of satellite communication can enhance the reliability of 5G / 6G communication, for example, ensuring users on high-speed transportation such as airplanes and trains receive higher-quality communication services; it can also provide more data transmission resources for 5G / 6G communication, increasing transmission speeds. Therefore, simultaneously supporting terrestrial and satellite communication is an inevitable trend for future 5G / 6G communication, offering significant benefits in terms of wider coverage, reliability, multiple connections, and high throughput.

[0004] Currently, the biggest characteristic of satellite communication is the large round-trip transmission delay. Terminals may need to frequently switch beams and cells due to the movement of satellites, and the requirements for communication scheduling flexibility are relatively high. Therefore, the integration of satellite communication with 5G / 6G communication requires corresponding enhancements to existing 5G / 6G related protocols to better adapt to satellite communication scenarios. Summary of the Invention

[0005] This application provides a communication method and related apparatus.

[0006] The first aspect of this application provides a communication method, including: a satellite base station determining the polarization support capability of a first terminal; and communicating with the first terminal based on the polarization support capability of the first terminal.

[0007] As can be seen, in the example above, the satellite base station can first determine the polarization support capability of the terminal, and then communicate with the terminal based on this capability. Therefore, in scenarios where terminal polarization support capabilities are diverse, if the satellite base station is aware of the terminal's polarization support capabilities, it can better utilize these capabilities to achieve more flexible communication scheduling, thereby improving speed and resource utilization.

[0008] In some possible implementations, the satellite base station determines the polarization support capability of the first terminal by: the satellite base station determining the polarization support capability of the first terminal based on a capability reporting message from the first terminal, wherein the capability reporting message carries a polarization support capability indication, the polarization support capability indication being used to indicate the polarization support capability of the first terminal.

[0009] As can be seen, in the above example scheme, the polarization support capability is reported by the terminal, and the satellite base station can conveniently determine the polarization support capability of the terminal based on the capability report message from the terminal.

[0010] In some possible implementations, the polarization support capability of the first terminal includes one or more of the following polarization support capabilities: support for linear polarization reception, support for linear polarization transmission, support for circular polarization reception, and support for circular polarization transmission.

[0011] The linear polarization receiver includes vertical linear polarization receiver and / or horizontal linear polarization receiver.

[0012] The linearly polarized generator includes a vertically polarized generator and / or a horizontally polarized generator.

[0013] The circular polarization receiver includes a left-hand circular polarization receiver and / or a right-hand circular polarization receiver.

[0014] The circularly polarized generator includes a left-handed circularly polarized generator and / or a right-handed circularly polarized generator.

[0015] For example, circular polarization includes left-hand circular polarization and right-hand circular polarization. Signals with left-hand and right-hand circular polarization are orthogonal, and even when transmitted on the same time-frequency resources, they will not cause significant interference. Satellite base stations can use different polarization methods for adjacent cells or beams to reduce inter-beam or inter-cell interference. Satellite base stations can also schedule the transmission or reception of different data for one or two terminals on the same resources, using different polarization methods for different data, thereby improving data rate and resource utilization. Satellite base stations can also transmit the same data on the same time-frequency resources based on left-hand and right-hand circular polarization, which helps to improve the data gain.

[0016] In some possible implementations, communicating with the first terminal based on the polarization support capability of the first terminal includes:

[0017] When the polarization support capability of the first terminal includes support for linear polarization reception and support for circular polarization reception, the satellite base station transmits reference signals for linear polarization and circular polarization respectively. It receives reference signal measurement reports from the first terminal, the reference signal measurement reports including reference signal measurement results for linear polarization and circular polarization respectively.

[0018] Alternatively, when the polarization support capability of the first terminal includes vertical linear polarization reception and horizontal linear polarization reception, the satellite base station transmits reference signals for vertical linear polarization and horizontal linear polarization respectively; and receives a reference signal measurement report reported by the first terminal, the reference signal measurement report including reference signal measurement results for vertical linear polarization and horizontal linear polarization respectively.

[0019] Alternatively, when the polarization support capability of the first terminal includes left-hand circular polarization reception and right-hand circular polarization reception, the satellite base station transmits reference signals for left-hand circular polarization and right-hand circular polarization respectively; and receives the reference signal measurement report reported by the first terminal, the reference signal measurement report including the reference signal measurement results for left-hand circular polarization and right-hand circular polarization respectively.

[0020] As can be seen, the above example scheme makes it easier for satellite base stations to know the channel conditions on different polarization modes (linear polarization or circular polarization) or polarization directions (such as vertical linear polarization, horizontal linear polarization, left-hand circular polarization, and right-hand circular polarization) and make reasonable scheduling. At the same time, different polarization directions can share the same feedback configuration, which helps to reduce signaling overhead.

[0021] In some possible implementations, communicating with the first terminal based on the polarization support capability of the first terminal includes:

[0022] When the polarization support capability of the first terminal includes support for linear polarization transmission and support for circular polarization transmission, the satellite base station schedules the first TB group through the first scheduling command. The first TB group includes the first TB (transmission block) and the second TB. The resource indices corresponding to the first TB and the second TB are the same or different. The first TB corresponds to linear polarization and the second TB corresponds to circular polarization.

[0023] Alternatively, when the polarization support capability of the first terminal includes vertical linear polarization transmission and horizontal linear polarization transmission, the satellite base station schedules the first TB group through the first scheduling command, wherein the first TB group includes the third TB and the fourth TB, the resource indexes corresponding to the third TB and the fourth TB are the same or different, the third TB corresponds to vertical linear polarization, and the fourth TB corresponds to horizontal linear polarization.

[0024] Alternatively, when the polarization support capability of the first terminal includes left-hand circular polarization transmission and right-hand circular polarization transmission, the satellite base station schedules the first TB group through the first scheduling command. The first TB group includes the fifth TB and the sixth TB. The resource indices corresponding to the fifth TB and the sixth TB are the same or different. The fifth TB corresponds to left-hand circular polarization, and the sixth TB corresponds to right-hand circular polarization.

[0025] As can be seen, the above example scheme can achieve flexible scheduling of multiple TBs through a single scheduling command, which helps to reduce resource overhead and signaling overhead.

[0026] In some possible implementations, the data decoding feedback corresponding to the first TB and the second TB uses different codebooks or the same codebook; or the data decoding feedback corresponding to the third TB and the fourth TB uses different codebooks or the same codebook; or the data decoding feedback corresponding to the fifth TB and the sixth TB uses different codebooks or the same codebook.

[0027] In some possible implementations, when the polarization support capability of the first terminal includes support for linear polarization transceiver and support for circular polarization transceiver, the random access resources allocated by the satellite base station to the first terminal support both linear polarization and circular polarization.

[0028] Alternatively, if the polarization support capability of the first terminal includes support for linear polarization transmission and reception, the random access resources allocated by the satellite base station to the first terminal support linear polarization.

[0029] Alternatively, if the polarization support capability of the first terminal includes support for circular polarization transmission and reception, the random access resources allocated by the satellite base station to the first terminal support circular polarization.

[0030] In some possible implementations, the random access resources allocated by the satellite base station to the first terminal support circular polarization. The random access resources supporting circular polarization include random access resources supporting left-hand circular polarization and random access resources supporting right-hand circular polarization. The random access resources supporting left-hand circular polarization and random access resources supporting right-hand circular polarization do not overlap or at least partially overlap in time and frequency.

[0031] In some possible implementations, when the polarization support capability of the second terminal includes support for circular polarization transceiver, the method further includes:

[0032] When the first terminal initiates random access through random access resources that support left-hand circular polarization, and the second terminal initiates random access through random access resources that support right-hand circular polarization, the satellite base station provides random access feedback to the first and second terminals through random access resources that support either left-hand or right-hand circular polarization.

[0033] or,

[0034] When a first terminal initiates random access through random access resources supporting left-hand circular polarization, and a second terminal initiates random access through random access resources supporting right-hand circular polarization; the satellite base station provides random access feedback to the first terminal through random access resources supporting left-hand circular polarization; and the satellite base station provides random access feedback to the second terminal through random access resources supporting right-hand circular polarization.

[0035] or,

[0036] When the first terminal initiates random access through random access resources supporting left-hand circular polarization, and the second terminal initiates random access through random access resources supporting right-hand circular polarization; the satellite base station provides random access feedback to the second terminal through random access resources supporting left-hand circular polarization; and the satellite base station provides random access feedback to the first terminal through random access resources supporting right-hand circular polarization.

[0037] In some possible implementations, the random access resources allocated by the satellite base station to the first terminal support linear polarization. The random access resources supporting linear polarization include random access resources supporting horizontal linear polarization and random access resources supporting vertical linear polarization. The random access resources supporting horizontal linear polarization and random access resources supporting vertical linear polarization do not overlap or at least partially overlap in time and frequency.

[0038] In some possible implementations, when the polarization support capability of the second terminal includes support for linear polarization transmission and reception, the method further includes:

[0039] When the first terminal initiates random access through random access resources that support horizontal linear polarization, and the second terminal initiates random access through random access resources that support vertical linear polarization, the satellite base station provides random access feedback to the first and second terminals through random access resources that support either horizontal or vertical linear polarization.

[0040] or,

[0041] When a first terminal initiates random access through random access resources supporting horizontal linear polarization, and a second terminal initiates random access through random access resources supporting vertical linear polarization; the satellite base station provides random access feedback to the first terminal through random access resources supporting horizontal linear polarization; the satellite base station provides random access feedback to the second terminal through random access resources supporting vertical linear polarization.

[0042] or,

[0043] When a first terminal initiates random access through random access resources supporting horizontal linear polarization, and a second terminal initiates random access through random access resources supporting vertical linear polarization; the satellite base station provides random access feedback to the second terminal through random access resources supporting horizontal linear polarization; and the satellite base station provides random access feedback to the first terminal through random access resources supporting vertical linear polarization.

[0044] As can be seen, the above example scheme can achieve flexible scheduling of random terminal access, which is beneficial to improving access capacity and reducing access conflicts.

[0045] A second aspect of this application provides a communication method, comprising: a first terminal sending a capability reporting message to a satellite base station, the capability reporting message carrying a polarization support capability indication, the polarization support capability indication indicating the polarization support capability of the first terminal; and the first terminal communicating with the satellite base station based on the polarization support capability of the first terminal.

[0046] A third aspect of this application provides a communication device, comprising: a processor and a memory coupled together; the processor is used to call a program stored in the memory to implement some or all of the steps of any method provided in this application.

[0047] A fourth aspect of this application provides a communication chip, which is used to implement some or all of the steps of any one of the methods provided in this application.

[0048] A fifth aspect of this application provides a computer-readable storage medium, wherein...

[0049] The computer-readable storage medium stores a program that, when run on a computer, causes the computer to perform some or all of the steps of any of the methods provided in the embodiments of this application.

[0050] A sixth aspect of this application provides a computer program product, wherein...

[0051] The computer program product includes a computer program that, when run on a computer, causes the computer to perform some or all of the steps of any of the methods provided in the embodiments of this application. Attached Figure Description

[0052] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0053] Figure 2 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0054] Figure 3 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0055] Figure 4 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0056] Figure 5 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0057] Figure 6 is a schematic diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0058] While many terminals currently only support linear polarization, some are beginning to support circular polarization. However, if the satellite base station is unaware of the terminal's polarization support capabilities, it can better utilize these capabilities to achieve more flexible communication. Therefore, in this application's embodiments, the satellite base station can determine the terminal's polarization support capabilities through explicit or implicit means, thereby enabling communication with the terminal based on its polarization support capabilities.

[0059] Please refer to Figure 1, which is a schematic diagram of a communication network architecture provided by this application. In the communication network illustrated in Figure 1, ground-based terminals (UEs, User equipment) access the network through an air interface (which can be of various types, such as a 5G air interface). Base stations deployed on satellites are called satellite base stations, and these satellite base stations are connected to the ground-based core network via wireless links. Furthermore, wireless links may also exist between different satellite base stations to facilitate signaling interaction and user data transmission between them.

[0060] The terminal may include mobile devices that support the new air interface, such as mobile phones and tablets. The terminal can access the satellite communication network through the air interface and initiate services such as making calls and accessing the Internet.

[0061] Base stations (such as satellite base stations) mainly provide wireless access services, allocate wireless resources to accessing terminals, and provide reliable wireless transmission protocols and data encryption protocols.

[0062] The core network provides services such as user access control, mobility management, session management, user security authentication, and accounting. The core network consists of multiple functional units, which can be divided into control plane network elements (such as AMF and SMF) and user plane network elements (such as UPF).

[0063] The Access and Mobility Management Unit (AMF) is responsible for user access management, security authentication, and mobility management. The User Plane Processing Unit (UPF) is responsible for managing user plane data transmission and traffic statistics.

[0064] The ground station is mainly responsible for forwarding signaling and service data between the satellite base station and the core network.

[0065] The air interface refers to the wireless link between the terminal and the base station.

[0066] The Xn interface represents the interface between base stations, mainly used for signaling interactions such as handover.

[0067] The air interface (NG) represents the interface between the base station and the core network, primarily used for exchanging core network signaling (NAS) and user service data.

[0068] The communication network illustrated in Figure 1 can be considered as a 5G / 6G communication network that integrates satellite communication. The solution of this application embodiment can be applied to a 5G / 6G communication network that integrates satellite communication. Network elements such as terminals, satellite base stations and ground stations in the communication network can perform uplink and downlink data communication based on wireless communication protocols.

[0069] Please refer to Figure 2, which is a flowchart illustrating a communication method provided by an embodiment of this application. As shown in Figure 2, a communication method according to an embodiment of this application may include:

[0070] 201. The satellite base station determines the polarization support capability of the first terminal.

[0071] 202. The satellite base station communicates with the first terminal based on the polarization support capability of the first terminal.

[0072] The satellite base station can determine the polarization support capability of the first terminal in various ways. The first terminal can report its polarization support capability to the satellite base station in an explicit or implicit manner, and the satellite base station can then determine the polarization support capability of the first terminal accordingly.

[0073] For example, the first terminal can send a capability reporting message to the satellite base station. The capability reporting message carries a polarization support capability indication, which is used to indicate the polarization support capability of the first terminal. The satellite base station can then determine the polarization support capability of the first terminal based on the capability reporting message from the first terminal.

[0074] In some possible implementations, the polarization support capability of the first terminal includes one or more of the following polarization support capabilities: support for linear polarization reception, support for linear polarization transmission, support for circular polarization reception, and support for circular polarization transmission.

[0075] The linearly polarized receiver includes vertically polarized receivers and / or horizontally polarized receivers. The linearly polarized emitter includes vertically polarized emitter and / or horizontally polarized emitter. The circularly polarized receiver includes left-handed circularly polarized receivers and / or right-handed circularly polarized receivers. The circularly polarized emitter includes left-handed circularly polarized emitter and / or right-handed circularly polarized emitter.

[0076] In some possible implementations, the satellite base station, based on the polarization support capability of the first terminal, can perform processes such as reference signal measurement feedback, random access, and data scheduling and transmission with the first terminal.

[0077] As can be seen, in the embodiments of this application, the satellite base station can first determine the polarization support capability of the terminal, and then communicate with the terminal based on the polarization support capability of the terminal. In scenarios where the polarization support capability of the terminal is diverse, if the satellite base station knows the polarization support capability of the terminal, it will be easier to make better use of the polarization support capability of the terminal to achieve more flexible communication.

[0078] For example, circular polarization includes left-hand circular polarization and right-hand circular polarization. Signals with left-hand and right-hand circular polarization are orthogonal, and even when transmitted on the same time-frequency resources, they will not cause significant interference. Satellite base stations can use different polarization methods for adjacent cells or beams to reduce inter-beam or inter-cell interference. Satellite base stations can schedule one or two terminals to transmit or receive different data on the same resources, using different polarization methods for different data, thereby improving data rate and resource utilization. Satellite base stations can transmit the same data on the same time-frequency resources based on left-hand and right-hand circular polarization, which helps to improve the data gain.

[0079] The following examples illustrate several communication links (such as random access, signal measurement, and resource scheduling) between a satellite base station and a terminal based on the terminal's polarization support capability. Of course, the communication links between the base station and the terminal based on the terminal's polarization support capability are not limited to those examples.

[0080] Please refer to Figure 3, which is a flowchart illustrating another communication method provided by an embodiment of this application. This embodiment primarily focuses on the signal measurement stage of the communication process. As shown in Figure 3, another communication method according to an embodiment of this application may include:

[0081] 301. The satellite base station determines the polarization support capability of the first terminal.

[0082] 302. The satellite base station transmits reference signals based on the polarization support capability of the first terminal.

[0083] 303. The first terminal measures the reference signal to generate a reference signal measurement report, and the first terminal reports the reference signal measurement report to the satellite base station.

[0084] 304. The satellite base station receives the reference signal measurement report reported by the first terminal.

[0085] In some possible implementations, the satellite base station transmitting reference signals based on the polarization support capability of the first terminal may include: when the polarization support capability of the first terminal includes support for linear polarization reception and support for circular polarization reception, the satellite base station transmits reference signals for linear polarization and circular polarization respectively. The reference signal measurement report submitted by the first terminal may include reference signal measurement results for linear polarization and circular polarization respectively.

[0086] In some possible implementations, the satellite base station transmitting reference signals based on the polarization support capability of the first terminal may include: when the polarization support capability of the first terminal includes vertical linear polarization reception and horizontal linear polarization reception, the satellite base station transmits reference signals for vertical linear polarization and horizontal linear polarization respectively. The reference signal measurement report reported by the first terminal may include reference signal measurement results for vertical linear polarization and horizontal linear polarization respectively.

[0087] In some possible implementations, the satellite base station transmitting reference signals based on the polarization support capability of the first terminal may include: when the polarization support capability of the first terminal includes left-hand circular polarization reception and right-hand circular polarization reception, the satellite base station transmits reference signals for left-hand circular polarization and right-hand circular polarization respectively; the reference signal measurement report reported by the first terminal may include the reference signal measurement results for left-hand circular polarization and right-hand circular polarization respectively.

[0088] As can be seen, the above example scheme makes it easier for satellite base stations to know the channel conditions on different polarization modes (linear polarization or circular polarization) or polarization directions (such as vertical linear polarization, horizontal linear polarization, left-hand circular polarization, and right-hand circular polarization) and make reasonable scheduling. At the same time, different polarization directions can share the same feedback configuration, which helps to reduce signaling overhead.

[0089] Please refer to Figure 4, which is a flowchart illustrating another communication method provided by an embodiment of this application. This embodiment mainly focuses on the resource scheduling stage of communication. As shown in Figure 4, another communication method according to an embodiment of this application may include:

[0090] 401. The satellite base station determines the polarization support capability of the first terminal.

[0091] 402. The satellite base station sends a first scheduling command to the first terminal.

[0092] 403. The first terminal receives the first scheduling command from the satellite base station, wherein the first scheduling command is used to schedule the first TB group. The first terminal can use the first TB group to transmit data with the satellite base station.

[0093] In some possible implementations, when the polarization support capability of the first terminal includes support for linear polarization transmission and support for circular polarization transmission, the first TB group includes a first TB and a second TB. The resource indices corresponding to the first TB and the second TB may be the same or different. The first TB corresponds to linear polarization, and the second TB corresponds to circular polarization. The data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the first TB and the second TB uses different codebooks or the same codebook.

[0094] In some possible implementations, when the polarization support capability of the first terminal includes vertical linear polarization transmission and horizontal linear polarization transmission, the first TB group includes a third TB and a fourth TB, the resource indices corresponding to the third TB and the fourth TB may be the same or different, the third TB corresponds to vertical linear polarization, and the fourth TB corresponds to horizontal linear polarization. The data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the third TB and the fourth TB uses different codebooks or the same codebook.

[0095] In some possible implementations, when the polarization support capability of the first terminal includes left-hand circular polarization transmission and right-hand circular polarization transmission, the first TB group includes a fifth TB and a sixth TB. The resource indices corresponding to the fifth TB and the sixth TB may be the same or different. The fifth TB corresponds to left-hand circular polarization, and the sixth TB corresponds to right-hand circular polarization. The data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the fifth TB and the sixth TB uses different codebooks or the same codebook.

[0096] As can be seen, the above example scheme can achieve flexible scheduling of multiple TBs through a single scheduling command, which helps to reduce resource overhead and signaling overhead.

[0097] Please refer to Figure 5, which is a flowchart illustrating another communication method provided by an embodiment of this application. This embodiment mainly focuses on the random access communication stage. As shown in Figure 5, another communication method according to an embodiment of this application may include:

[0098] 501. The satellite base station determines the polarization support capability of the first terminal.

[0099] 502. The satellite base station allocates random access resources to the first terminal.

[0100] 503. The first terminal uses the random access resources allocated to it by the satellite base station to perform random access.

[0101] In some possible implementations, when the polarization support capability of the first terminal includes support for linear polarization transceiver and support for circular polarization transceiver, the random access resources allocated by the satellite base station to the first terminal support both linear polarization and circular polarization.

[0102] In some possible implementations, when the polarization support capability of the first terminal includes support for linear polarization transmission and reception, the random access resources allocated by the satellite base station to the first terminal support linear polarization.

[0103] In some possible implementations, when the polarization support capability of the first terminal includes support for circular polarization transceiver, the random access resources allocated by the satellite base station to the first terminal support circular polarization.

[0104] In some possible implementations, when the random access resources allocated by the satellite base station to the first terminal support circular polarization, the random access resources supporting circular polarization may include random access resources supporting left-hand circular polarization and random access resources supporting right-hand circular polarization. The random access resources supporting left-hand circular polarization and random access resources supporting right-hand circular polarization do not overlap or at least partially overlap in time and frequency.

[0105] In some possible implementations, when the polarization support capability of the second terminal includes support for circular polarization transmission and reception, if the first terminal initiates random access through random access resources supporting left-hand circular polarization, and the second terminal initiates random access through random access resources supporting right-hand circular polarization, the satellite base station can provide random access feedback to the first and second terminals through random access resources supporting either left-hand or right-hand circular polarization.

[0106] In some possible implementations, when a first terminal initiates random access through random access resources supporting left-hand circular polarization, and a second terminal initiates random access through random access resources supporting right-hand circular polarization, the satellite base station can provide random access feedback to the first terminal through random access resources supporting left-hand circular polarization; the satellite base station can also provide random access feedback to the second terminal through random access resources supporting right-hand circular polarization.

[0107] In some possible implementations, when a first terminal initiates random access through random access resources supporting left-hand circular polarization, and a second terminal initiates random access through random access resources supporting right-hand circular polarization, the satellite base station can provide random access feedback to the second terminal through random access resources supporting left-hand circular polarization; the satellite base station can also provide random access feedback to the first terminal through random access resources supporting right-hand circular polarization.

[0108] In some possible implementations, when the random access resources allocated by the satellite base station to the first terminal support linear polarization, the random access resources supporting linear polarization include random access resources supporting horizontal linear polarization and random access resources supporting vertical linear polarization, and the random access resources supporting horizontal linear polarization and random access resources supporting vertical linear polarization do not overlap or at least partially overlap in time and frequency.

[0109] In some possible implementations, when the polarization support capability of the second terminal includes support for linear polarization transmission and reception, if the first terminal initiates random access through random access resources supporting horizontal linear polarization, and the second terminal initiates random access through random access resources supporting vertical linear polarization, the satellite base station can provide random access feedback to the first and second terminals through random access resources supporting either horizontal or vertical linear polarization.

[0110] In some possible implementations, when the polarization support capability of the second terminal includes support for linear polarization transmission and reception, if the first terminal initiates random access through random access resources supporting horizontal linear polarization, and the second terminal initiates random access through random access resources supporting vertical linear polarization, the satellite base station can provide random access feedback to the first terminal through random access resources supporting horizontal linear polarization; the satellite base station can also provide random access feedback to the second terminal through random access resources supporting vertical linear polarization.

[0111] In some possible implementations, when a first terminal initiates random access through random access resources supporting horizontal linear polarization, and a second terminal initiates random access through random access resources supporting vertical linear polarization, the satellite base station can provide random access feedback to the second terminal through random access resources supporting horizontal linear polarization; the satellite base station can also provide random access feedback to the first terminal through random access resources supporting vertical linear polarization.

[0112] In some possible implementations, for example, for circularly polarized random access resources, feedback can be made for a certain polarization direction. For example, for random access resources with two polarization directions, two terminals (such as the first terminal and the second terminal) can use a preamble sequence (random preamble sequence) with the same ID to initiate a random access request. The satellite base station can make unified feedback in a certain polarization direction. That is, random access resources with the same time and frequency resources but different polarization directions can correspond to a common random access response (Msg2).

[0113] In some possible implementations, the random access response may include a polarization identifier (wherein the polarization identifier indicates the polarization mode or polarization direction). Different preamble IDs may correspond to different polarization identifiers, and each polarization identifier has a corresponding timing advance (TA) feedback. The TA is the amount of timing advance adjustment detected by the satellite base station based on the preamble sequence. When the terminal sends msg3 (initiating random access contention), it can make timing advance adjustments based on the TA, which is beneficial for achieving better uplink synchronization.

[0114] In some possible implementations, the terminal (such as the first terminal and the second terminal) can determine its TA based on the preamble ID and the polarization direction initiating random access (in the random access response sent by the satellite base station, the polarization identifier corresponding to different preamble IDs may be different, and each polarization identifier has a corresponding timing advance (TA) feedback).

[0115] In some possible implementations, for the same preamble ID, terminals with different polarization directions (such as the first terminal and the second terminal) may configure the same or different random access contention resources (such as resources for sending Msg3). Furthermore, the random access contention resources may be assumed to be common to both left and right polarizations, or the polarization direction of the current random access contention resource may be indicated by a specification (e.g., left-hand circular polarization, right-hand circular polarization, horizontal linear polarization, vertical linear polarization).

[0116] As can be seen, the above example scheme can achieve flexible scheduling of random terminal access, which is beneficial to improving access capacity and reducing access conflicts.

[0117] Referring to Figure 6, this application embodiment also provides a communication device 600, which may include:

[0118] A processor 610 and a memory 620 are coupled together; the processor is used to call a program stored in the memory to implement some or all of the steps of any of the methods provided in the embodiments of this application.

[0119] The processor in this application embodiment is also referred to as a Central Processing Unit (CPU). In specific applications, the components are coupled together, for example, through a bus system. The bus system may include, in addition to a data bus, a power bus, a control bus, and a status signal bus, etc. Any of the methods disclosed in the above-described embodiments of this application can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In some implementation processes, some or all of the steps of the above methods can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The processor can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application may be directly manifested as hardware execution, or a combination of hardware and software modules. The software module resides in relatively mature storage media in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory; for example, a processor can read information from the memory and, in conjunction with its hardware, complete some or all of the steps of the above method.

[0120] This application also provides a computer-readable storage medium storing a computer program that is executed by hardware (e.g., a processor) to implement some or all of the steps of any method executed by any device in this application.

[0121] This application also provides a computer program product including instructions, wherein when the instructions included in the computer program product are executed on a computer device, the computer device may perform some or all of the steps of any method in the embodiments of this application.

[0122] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, or magnetic tape), an optical medium (e.g., optical disk), or a semiconductor medium (e.g., solid-state drive), etc. In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0123] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0124] In the embodiments provided in this application, it should be understood that the disclosed apparatus can also be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the indirect or direct coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections of devices or units may be electrical or other forms.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0126] In the various embodiments of this application, the functional units can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] Wherein, if the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (e.g., a personal computer, server, or network device) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium may include, for example, various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

Claims

1. A communication method characterized by comprising: The method comprises: a satellite base station determines a polarization support capability of a first terminal; communication is performed between the satellite base station and the first terminal based on the polarization support capability of the first terminal.

2. The method of claim 1, wherein the satellite base station determines the polarization support capability of the first terminal by determining the polarization support capability of the first terminal based on a capability reporting message from the first terminal, the capability reporting message carrying a polarization support capability indication, the polarization support capability indication indicating the polarization support capability of the first terminal.

3. The method according to claim 1 or 2, characterized in that, the polarization support capability of the first terminal comprises one or more of the following polarization support capabilities: support for linear polarization reception, support for linear polarization transmission, support for circular polarization reception, and support for circular polarization transmission; wherein the linear polarization reception comprises vertical linear polarization reception and / or horizontal linear polarization reception; wherein the linear polarization transmission comprises vertical linear polarization transmission and / or horizontal linear polarization transmission; wherein the circular polarization reception comprises left-handed circular polarization reception and / or right-handed circular polarization reception; wherein the circular polarization transmission comprises left-handed circular polarization transmission and / or right-handed circular polarization transmission.

4. The method according to any one of claims 1 to 3, characterized in that, the communication between the satellite base station and the first terminal based on the polarization support capability of the first terminal comprises: when the polarization support capability of the first terminal comprises support for linear polarization reception and support for circular polarization reception, the satellite base station transmits reference signals for linear polarization and circular polarization respectively, and receives a reference signal measurement report reported by the first terminal, the reference signal measurement report comprising reference signal measurement results for linear polarization and circular polarization respectively; or, when the polarization support capability of the first terminal comprises vertical linear polarization reception and horizontal linear polarization reception, the satellite base station transmits reference signals for vertical linear polarization and horizontal linear polarization respectively, and receives a reference signal measurement report reported by the first terminal, the reference signal measurement report comprising reference signal measurement results for vertical linear polarization and horizontal linear polarization respectively; or, when the polarization support capability of the first terminal comprises left-handed circular polarization reception and right-handed circular polarization reception, the satellite base station transmits reference signals for left-handed circular polarization and right-handed circular polarization respectively, and receives a reference signal measurement report reported by the first terminal, the reference signal measurement report comprising reference signal measurement results for left-handed circular polarization and right-handed circular polarization respectively.

5. The method according to any one of claims 1 to 4, characterized in that, the communication between the satellite base station and the first terminal based on the polarization support capability of the first terminal comprises: when the polarization support capability of the first terminal comprises support for linear polarization transmission and support for circular polarization transmission, the satellite base station schedules a first TB group through a first scheduling command, wherein the first TB group comprises a first TB and a second TB, the resource indexes corresponding to the first TB and the second TB being the same or different, the first TB corresponding to linear polarization and the second TB corresponding to circular polarization; or, When the polarization support capability of the first terminal includes vertical linear polarization transmission and horizontal linear polarization transmission, the satellite base station schedules a first TB group through a first scheduling command, wherein the first TB group includes a third TB and a fourth TB, the third TB and the fourth TB correspond to the same or different resource indexes, the third TB corresponds to vertical linear polarization, and the fourth TB corresponds to horizontal linear polarization. Alternatively, When the polarization support capability of the first terminal includes left circular polarization transmission and right circular polarization transmission, the satellite base station schedules a first TB group through a first scheduling command, wherein the first TB group includes a fifth TB and a sixth TB, the fifth TB and the sixth TB correspond to the same or different resource indexes, the fifth TB corresponds to left circular polarization, and the sixth TB corresponds to right circular polarization.

6. The method of claim 5, wherein, The data decoding feedback corresponding to the first TB and the second TB uses different codebooks or the same codebook; or the data decoding feedback corresponding to the third TB and the fourth TB uses different codebooks or the same codebook. Alternatively, the data decoding feedback corresponding to the fifth TB and the sixth TB uses different codebooks or the same codebook.

7. The method according to any one of claims 1 to 6, characterized in that, When the polarization support capability of the first terminal includes linear polarization transmission and circular polarization transmission, the satellite base station allocates random access resources supporting linear polarization and circular polarization to the first terminal. Alternatively, when the polarization support capability of the first terminal includes linear polarization transmission, the satellite base station allocates random access resources supporting linear polarization to the first terminal. Alternatively, when the polarization support capability of the first terminal includes circular polarization transmission, the satellite base station allocates random access resources supporting circular polarization to the first terminal.

8. The method of claim 7, wherein, The satellite base station allocates random access resources supporting circular polarization to the first terminal, wherein the random access resources supporting circular polarization include random access resources supporting left circular polarization and random access resources supporting right circular polarization, and the random access resources supporting left circular polarization and the random access resources supporting right circular polarization do not overlap or at least partially overlap in time and frequency.

9. The method of claim 8, wherein, When the polarization support capability of the second terminal includes circular polarization transmission, the method further includes: When the first terminal initiates random access through random access resources supporting left circular polarization, and the second terminal initiates random access through random access resources supporting right circular polarization, the satellite base station feeds back random access to the first terminal and the second terminal through random access resources supporting left circular polarization or right circular polarization. Alternatively, When the first terminal initiates random access through random access resources supporting left circular polarization, and the second terminal initiates random access through random access resources supporting right circular polarization, the satellite base station feeds back random access to the first terminal through random access resources supporting left circular polarization, and feeds back random access to the second terminal through random access resources supporting right circular polarization. Alternatively, When the first terminal initiates random access through a random access resource supporting left-handed circular polarization, and the second terminal initiates random access through a random access resource supporting right-handed circular polarization; the satellite base station feeds back random access to the second terminal through a random access resource supporting left-handed circular polarization; and the satellite base station feeds back random access to the first terminal through a random access resource supporting right-handed circular polarization.

10. The method of claim 7, wherein, The random access resource allocated by the satellite base station to the first terminal supports linear polarization, wherein the random access resource supporting linear polarization includes a random access resource supporting horizontal linear polarization and a random access resource supporting vertical linear polarization, and the random access resource supporting horizontal linear polarization and the random access resource supporting vertical linear polarization are non-overlapping or at least partially overlapping in time and frequency.

11. The method of claim 10, wherein, When the polarization support capability of the second terminal includes support for linear polarization transceiving, the method further includes: When the first terminal initiates random access through a random access resource supporting horizontal linear polarization, and the second terminal initiates random access through a random access resource supporting vertical linear polarization; the satellite base station feeds back random access to the first terminal and the second terminal through a random access resource supporting horizontal linear polarization or vertical linear polarization; Or, When the first terminal initiates random access through a random access resource supporting horizontal linear polarization, and the second terminal initiates random access through a random access resource supporting vertical linear polarization; the satellite base station feeds back random access to the first terminal through a random access resource supporting horizontal linear polarization; and the satellite base station feeds back random access to the second terminal through a random access resource supporting vertical linear polarization; Or, When the first terminal initiates random access through a random access resource supporting horizontal linear polarization, and the second terminal initiates random access through a random access resource supporting vertical linear polarization; the satellite base station feeds back random access to the second terminal through a random access resource supporting horizontal linear polarization; and the satellite base station feeds back random access to the first terminal through a random access resource supporting vertical linear polarization.

12. A communication method characterized by comprising: Comprise: The first terminal sends a capability reporting message to the satellite base station, and the capability reporting message carries a polarization support capability indication, which is used to indicate the polarization support capability of the first terminal. The first terminal communicates with the satellite base station based on the polarization support capability of the first terminal.

13. A communication device, characterized by Comprise: A processor and a memory that are coupled to each other; The processor is configured to invoke a program stored in the memory to implement the method of any one of claims 1 to 12.

14. A communication chip, comprising: The communication chip is configured to implement the method of any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a program, and when the program runs on the computer, the computer executes the method of any one of claims 1 to 12.

16. A computer program product, characterised in that, The computer program product comprises a computer program, and when the computer program runs on the computer, the computer executes the method of any one of claims 1 to 12.

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