Communication method and related device

Abstract

The embodiment of the invention provides a communication method and a related device. According to the embodiment of the invention, the satellite base station can firstly determine the polarization support capability of the terminal, and then can communicate with the terminal based on the polarization support capability of the terminal, and under the scene that the polarization support capability of the terminal is diversified, if the satellite base station knows the polarization support capability of the terminal, communication with the terminal is realized. Therefore, more flexible communication can be realized by better utilizing the polarization support capability of the terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a communication method and related apparatus. BACKGROUND

[0002] Satellite communication has its unique advantages compared with ground communication, such as providing wider coverage. Satellite base stations in a satellite communication system are not easily damaged by natural disasters or external forces. In the future, 5G / 6G communication integrated with satellite communication can provide communication services for areas such as oceans and forests that cannot be covered by ground communication networks. The integration of satellite communication can enhance the reliability of 5G / 6G communication, such as ensuring that users on high-speed vehicles such as airplanes and trains obtain better communication services; and can provide more data transmission resources for 5G / 6G communication and improve transmission rates. Therefore, simultaneously supporting ground communication and satellite communication is an inevitable trend for future 5G / 6G communication, which has great benefits in terms of wide coverage, reliability, multi-connection, and high throughput.

[0003] Currently, the biggest feature of satellite communication is that the round-trip transmission delay is large, the terminal may need to perform frequent beam and cell switching due to the movement of the satellite, and the communication scheduling flexibility requirement is high. Therefore, the integration of satellite communication and 5G / 6G communication needs to make corresponding enhancements to the existing 5G / 6G related protocols to better adapt to the satellite communication scenario. SUMMARY

[0004] Embodiments of the present application provide a communication method and related apparatus.

[0005] The first aspect of the embodiments of the present application provides a communication method, comprising: determining, by a satellite base station, a polarization support capability of a first terminal; and performing communication with the first terminal based on the polarization support capability of the first terminal.

[0006] As can be seen, in the above example scheme, the satellite base station can first determine the polarization support capability of the terminal, and then perform communication with the terminal based on the polarization support capability of the terminal. Therefore, in the scenario where the polarization support capability of the terminal is diversified, if the satellite base station knows the polarization support capability of the terminal, it is convenient to better utilize the polarization support capability of the terminal to achieve more flexible communication scheduling, thereby facilitating the improvement of rate and resource utilization, etc.

[0007] In some possible implementation manners, the satellite base station determining the polarization support capability of the first terminal comprises: the satellite base station 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 being used to indicate the polarization support capability of the first terminal.

[0008] It can be seen that in the above example scheme, the terminal reports its polarization support capability, and the satellite base station can conveniently determine the polarization support capability of the terminal based on the capability report message from the terminal.

[0009] In some possible implementation manners, the polarization support capability of the first terminal comprises one or more of the following polarization support capabilities: supporting linear polarization receiving, supporting linear polarization transmitting, supporting circular polarization receiving, and supporting circular polarization transmitting.

[0010] The linear polarization receiving comprises vertical linear polarization receiving and / or horizontal linear polarization receiving.

[0011] The linear polarization transmitting comprises vertical linear polarization transmitting and / or horizontal linear polarization transmitting.

[0012] The circular polarization receiving comprises left-handed circular polarization receiving and / or right-handed circular polarization receiving.

[0013] The circular polarization transmitting comprises left-handed circular polarization transmitting and / or right-handed circular polarization transmitting.

[0014] For example, circular polarization comprises left-handed circular polarization and right-handed circular polarization, and the signals of the left-handed circular polarization and the right-handed circular polarization are orthogonal, and the two orthogonals do not interfere with each other even if they are transmitted on the same time-frequency resource. The satellite base station can adopt different polarization modes for adjacent cells or beams to reduce the interference between beams or cells. The satellite base station can also schedule transmission or reception of different data on the same resource for one or two terminals, and the different data adopts different polarization modes, thereby improving the rate and resource utilization. The satellite base station can also transmit the same data on the same time-frequency resource based on the left-handed circular polarization and the right-handed circular polarization, which is beneficial to improving the gain of the data.

[0015] In some possible implementation manners, the communication with the first terminal based on the polarization support capability of the first terminal comprises:

[0016] When the polarization support capability of the first terminal comprises supporting linear polarization receiving and supporting circular polarization receiving, the satellite base station transmits reference signals for linear polarization and circular polarization respectively. The reference signal measurement report reported by the first terminal is received, and the reference signal measurement report comprises reference signal measurement results for linear polarization and circular polarization respectively.

[0017] Or, when the polarization support capability of the first terminal comprises vertical linear polarization receiving and horizontal linear polarization receiving, 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 is received, and the reference signal measurement report comprises reference signal measurement results for vertical linear polarization and horizontal linear polarization respectively.

[0018] Or, 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 respectively transmits reference signals for left-hand circular polarization and right-hand circular polarization; and receiving a reference signal measurement report reported by the first terminal, the reference signal measurement report including reference signal measurement results for left-hand circular polarization and right-hand circular polarization respectively.

[0019] It can be seen that the above example scheme facilitates the satellite base station to know the channel conditions in 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) to make reasonable scheduling, and different polarization directions can share the same feedback configuration, which is beneficial to reduce the signaling overhead.

[0020] In some possible implementation manners, communicating with the first terminal based on the polarization support capability of the first terminal includes:

[0021] 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 a first TB group through a first scheduling command, wherein the first TB group includes a first TB (transport block) and a second TB, the resource indexes 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.

[0022] 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 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.

[0023] Or, 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 a first TB group through a first scheduling command, wherein the first TB group includes a fifth TB and a sixth TB, the resource indexes 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.

[0024] It can be seen that the above example scheme can realize flexible scheduling of multiple TBs through one scheduling command, which is beneficial to reduce the resource overhead and the signaling overhead.

[0025] In some possible implementation manners, 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.

[0026] In some possible implementation manners, when the polarization support capability of the first terminal includes support of linear polarization transceiving and support of circular polarization transceiving, the random access resource allocated by the satellite base station to the first terminal supports linear polarization and circular polarization;

[0027] Or when the polarization support capability of the first terminal includes support of linear polarization transceiving, the random access resource allocated by the satellite base station to the first terminal supports linear polarization.

[0028] Or when the polarization support capability of the first terminal includes support of circular polarization transceiving, the random access resource allocated by the satellite base station to the first terminal supports circular polarization.

[0029] In some possible implementation manners, the random access resource allocated by the satellite base station to the first terminal supports circular polarization, and the random access resource supporting circular polarization includes random access resource supporting left-handed direction circular polarization and random access resource supporting right-handed direction circular polarization, the random access resource supporting left-handed direction circular polarization and the random access resource supporting right-handed direction circular polarization do not overlap or at least partially overlap in time and frequency.

[0030] In some possible implementation manners, when the polarization support capability of the second terminal includes support of circular polarization transceiving, the method further includes:

[0031] When the first terminal initiates random access through the random access resource supporting left-handed direction circular polarization, and the second terminal initiates random access through the random access resource supporting right-handed direction circular polarization; the satellite base station feeds back random access to the first terminal and the second terminal through the random access resource supporting left-handed direction or right-handed direction circular polarization;

[0032] Or,

[0033] When the first terminal initiates random access through the random access resource supporting left-handed direction circular polarization, and the second terminal initiates random access through the random access resource supporting right-handed direction circular polarization; the satellite base station feeds back random access to the first terminal through the random access resource supporting left-handed direction circular polarization; and the satellite base station feeds back random access to the second terminal through the random access resource supporting right-handed direction circular polarization.

[0034] Or,

[0035] 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.

[0036] In some possible implementation manners, the random access resource allocated by the satellite base station to the first terminal supports linear polarization, 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 do not overlap or at least partially overlap in time and frequency.

[0037] In some possible implementation manners, when the polarization support capability of the second terminal includes support for linear polarization transceiving, the method further includes:

[0038] 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.

[0039] Or,

[0040] 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.

[0041] Or,

[0042] 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.

[0043] It can be seen that the above example scheme can realize flexible scheduling of terminal random access, which is conducive to improving the capacity of access and reducing the conflict of access.

[0044] The second aspect of the embodiment of the present 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 being used to indicate the polarization support capability of the first terminal. The first terminal and the satellite base station perform communication based on the polarization support capability of the first terminal.

[0045] The third aspect of the embodiment of the present application provides a communication device, comprising: a processor and a memory coupled with each other; the processor is used to invoke a program stored in the memory, so as to realize part or all steps of any method provided by the embodiment of the present application.

[0046] The fourth aspect of the embodiment of the present application provides a communication chip, which is used to realize part or all steps of any method provided by the embodiment of the present application.

[0047] The fifth aspect of the embodiment of the present application provides a computer readable storage medium, wherein,

[0048] The computer readable storage medium stores a program, when the program runs on the computer, so that the computer executes part or all steps of any method provided by the embodiment of the present application.

[0049] The sixth aspect of the embodiment of the present application provides a computer program product, wherein,

[0050] The computer program product comprises a computer program, when the computer program runs on the computer, so that the computer executes part or all steps of any method provided by the embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 FIG. 1 is a schematic diagram of an architecture of a communication system provided by the embodiment of the present application;

[0052] Figure 2 FIG. 2 is a flowchart of a communication method provided by the embodiment of the present application;

[0053] Figure 3 FIG. 3 is a flowchart of another communication method provided by the embodiment of the present application;

[0054] Figure 4 FIG. 4 is a flowchart of another communication method provided by the embodiment of the present application;

[0055] Figure 5 FIG. 5 is a flowchart of another communication method provided by the embodiment of the present application;

[0056] Figure 6 FIG. 6 is a schematic diagram of a communication device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0057] Currently, although many terminals only support linear polarization, some terminals also support circular polarization. However, if the satellite base station does not know the polarization support capability of the terminal, it is not convenient to better utilize the polarization support capability of the terminal to realize more flexible communication. Therefore, in the embodiment scheme of the present application, the polarization support capability of the terminal is determined by the satellite base station in an explicit or implicit manner, and then the terminal can be communicated based on the polarization support capability of the terminal.

[0058] Please refer to Figure 1 , Figure 1 is a schematic diagram of a communication network architecture provided by an example of the present application. Figure 1 In the communication network shown in the example, the terminal (UE, User Equipment) on the ground accesses the network through the air interface (which can be various types of air interfaces, such as a 5G air interface). The base station deployed on the satellite is called a satellite base station, and the satellite base station is connected to the core network on the ground through a wireless link. In addition, there can be a wireless link between different satellite base stations, which is used to complete the signaling interaction and user data transmission between satellite base stations.

[0059] Among them, the terminal can include a mobile device supporting new radio, such as a mobile phone, a tablet, and the like. The terminal can access the satellite communication network through the air interface and initiate calls and Internet services.

[0060] The base station (such as a satellite base station) mainly provides wireless access services, schedules wireless resources for the accessed terminal, and provides reliable wireless transmission protocols and data encryption protocols.

[0061] The core network is used to provide user access control, mobility management, session management, user security authentication, and billing services. The core network includes multiple functional units and can be divided into control plane network elements (such as AMF, SMF, etc.) and user plane network elements (such as UPF, etc.).

[0062] Among them, the access and mobility management unit (AMF, Authentication Management Function) is responsible for user access management, security authentication, and mobility management. The user plane processing unit (UPF, User Plane Function) is responsible for managing user plane data transmission and traffic statistics.

[0063] The ground station is mainly responsible for forwarding signaling and service data between the satellite base station and the core network.

[0064] The air interface represents the wireless link between the terminal and the base station.

[0065] The Xn interface represents the interface between the base station and the base station, and is mainly used for signaling interaction such as handover.

[0066] The air interface NG interface represents an interface between a base station and a core network, and mainly interacts with core network NAS signaling and user service data.

[0067] Figure 1 The communication network shown in the examples can be regarded as a 5G / 6G communication network integrated with satellite communication, and the embodiment scheme of the application can be applied to the 5G / 6G communication network integrated with satellite communication. The terminal, satellite base station and ground station and other network elements in the communication network can perform uplink and downlink data communication based on a wireless communication protocol.

[0068] Please refer to Figure 2 , Figure 2 is a flowchart of a communication method provided in an example of the application. Figure 2 As shown in the examples, a communication method of the application can include:

[0069] 201. The satellite base station determines the polarization support capability of the first terminal.

[0070] 202. The satellite base station communicates with the first terminal based on the polarization support capability of the first terminal.

[0071] The satellite base station can determine the polarization support capability of the first terminal in various ways. The first terminal can explicitly or implicitly report its polarization support capability to the satellite base station, and the satellite base station can determine the polarization support capability of the first terminal based on the report.

[0072] For example, the first terminal can send a capability report message to the satellite base station, the capability report message carrying a polarization support capability indication, the polarization support capability indication indicating the polarization support capability of the first terminal, and the satellite base station can determine the polarization support capability of the first terminal based on the capability report message from the first terminal.

[0073] 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.

[0074] The linear polarization reception includes vertical linear polarization reception and / or horizontal linear polarization reception. The linear polarization transmission includes vertical linear polarization transmission and / or horizontal linear polarization transmission. The circular polarization reception includes left-handed circular polarization reception and / or right-handed circular polarization reception. The circular polarization transmission includes left-handed circular polarization transmission and / or right-handed circular polarization transmission.

[0075] In some possible implementation manners, the satellite base station can perform, based on the polarization support capability of the first terminal, a feedback procedure of reference signal measurement, a random access procedure, a data scheduling transmission procedure, and the like with the first terminal.

[0076] As can be seen, in the embodiment scheme of the application, the satellite base station can first determine the polarization support capability of the terminal, and then can perform communication with the terminal based on the polarization support capability of the terminal. In the scenario where the polarization support capability of the terminal is diversified, if the satellite base station knows the polarization support capability of the terminal, the polarization support capability of the terminal can be better utilized to achieve more flexible communication.

[0077] For example, circular polarization includes left-handed circular polarization and right-handed circular polarization, and the signals of left-handed circular polarization and right-handed circular polarization are orthogonal, and the two orthogonals will not interfere with each other even if they are transmitted on the same time-frequency resource. The satellite base station can adopt different polarization modes for adjacent cells or beams to reduce the interference between beams or cells. The satellite base station can schedule transmission or reception of different data for one or two terminals on the same resource, and the different data adopts different polarization modes, thereby improving the rate and resource utilization. The satellite base station can transmit the same data on the same time-frequency resource based on left-handed circular polarization and right-handed circular polarization, which is beneficial to improve the gain of the data.

[0078] The following examples are used to introduce several communication links (such as random access, signal measurement, and resource scheduling links) between the satellite base station and the terminal based on the polarization support capability of the terminal. Of course, the communication between the base station and the terminal based on the polarization support capability of the terminal is not limited to the following examples.

[0079] Please refer to Figure 3 , Figure 3 is a flowchart of another communication method provided by the embodiment of the application. The embodiment mainly aims at the signal measurement link. Figure 3 As shown in the examples, the another communication method of the embodiment of the application can include:

[0080] 301. The satellite base station determines the polarization support capability of the first terminal.

[0081] 302. The satellite base station transmits a reference signal based on the polarization support capability of the first terminal.

[0082] 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.

[0083] 304. The satellite base station receives the reference signal measurement report reported by the first terminal.

[0084] In some possible implementation manners, the satellite base station sending the reference signal based on the polarization support capability of the first terminal can include: when the polarization support capability of the first terminal includes support for linear polarization receiving and support for circular polarization receiving, the satellite base station sends the reference signal for linear polarization and circular polarization respectively. The reference signal measurement report reported by the first terminal can include reference signal measurement results for linear polarization and circular polarization respectively.

[0085] In some possible implementation manners, the satellite base station sending the reference signal based on the polarization support capability of the first terminal can include: when the polarization support capability of the first terminal includes vertical linear polarization receiving and horizontal linear polarization receiving, the satellite base station sends the reference signal for vertical linear polarization and horizontal linear polarization respectively. The reference signal measurement report reported by the first terminal can include reference signal measurement results for vertical linear polarization and horizontal linear polarization respectively.

[0086] In some possible implementation manners, the satellite base station sending the reference signal based on the polarization support capability of the first terminal can include: when the polarization support capability of the first terminal includes left circular polarization receiving and right circular polarization receiving, the satellite base station sends the reference signal for left circular polarization and right circular polarization respectively; and the reference signal measurement report reported by the first terminal can include reference signal measurement results for left circular polarization and right circular polarization respectively.

[0087] It can be seen that the above example scheme facilitates the satellite base station to know the channel conditions in different polarization modes (linear polarization or circular polarization) or polarization directions (such as vertical linear polarization, horizontal linear polarization, left circular polarization, and right circular polarization) to make reasonable scheduling, and different polarization directions can share the same feedback configuration, which is beneficial to reducing the signaling overhead.

[0088] See Figure 4 , Figure 4 is a flowchart of another communication method provided by an embodiment of the application. The communication link mainly targeted by the embodiment is a resource scheduling link. Figure 4 For example, another communication method of the embodiment of the application can include:

[0089] 401. The satellite base station determines the polarization support capability of the first terminal.

[0090] 402. The satellite base station sends a first scheduling command to the first terminal.

[0091] 403. The first terminal receives the first scheduling command from the satellite base station, where the first scheduling command is used to schedule a first TB group. The first terminal can use the first TB group to perform data transmission with the satellite base station.

[0092] In some possible implementation manners, when the polarization support capability of the first terminal includes support of linear polarization transmission and support of circular polarization transmission, the first TB group includes a first TB and a second TB, the first TB and the second TB correspond to same or different resource indexes, the first TB corresponds to linear polarization, and the second TB corresponds to circular polarization. Different codebooks or same codebooks are used for data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the first TB and the second TB.

[0093] In some possible implementation manners, 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 third TB and the fourth TB correspond to same or different resource indexes, the third TB corresponds to vertical linear polarization, and the fourth TB corresponds to horizontal linear polarization. Different codebooks or same codebooks are used for data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the third TB and the fourth TB.

[0094] In some possible implementation manners, when the polarization support capability of the first terminal includes left circular polarization transmission and right circular polarization transmission, the first TB group includes a fifth TB and a sixth TB, the fifth TB and the sixth TB correspond to same or different resource indexes, the fifth TB corresponds to left circular polarization, and the sixth TB corresponds to right circular polarization. Different codebooks or same codebooks are used for data decoding feedback (such as hybrid automatic repeat request feedback) corresponding to the fifth TB and the sixth TB.

[0095] It can be seen that, in the example schemes described above, flexible scheduling of multiple TBs through one scheduling command can be implemented, which is beneficial to reducing resource overhead and signaling overhead.

[0096] See Figure 5 , Figure 5 is a flowchart of another communication method provided by an embodiment of the application. The communication link mainly targeted by the embodiment is a random access link. Figure 5 As shown in the example, another communication method of the embodiment of the application can include:

[0097] 501. A satellite base station determines a polarization support capability of a first terminal.

[0098] 502. The satellite base station allocates random access resources for the first terminal.

[0099] 503. The first terminal performs random access using the random access resources allocated by the satellite base station for the first terminal.

[0100] In some possible implementations, when the polarization support capability of the first terminal includes support of linear polarization transceiving and support of circular polarization transceiving, the satellite base station allocates random access resources supporting linear polarization and circular polarization for the first terminal.

[0101] In some possible implementations, when the polarization support capability of the first terminal includes support of linear polarization transceiving, the satellite base station allocates random access resources supporting linear polarization for the first terminal.

[0102] In some possible implementations, when the polarization support capability of the first terminal includes support of circular polarization transceiving, the satellite base station allocates random access resources supporting circular polarization for the first terminal.

[0103] In some possible implementations, when the random access resources allocated by the satellite base station for the first terminal support circular polarization, the random access resources supporting circular polarization can include random access resources supporting left-handed direction circular polarization and random access resources supporting right-handed direction circular polarization, the random access resources supporting left-handed direction circular polarization and the random access resources supporting right-handed direction circular polarization do not overlap or at least partially overlap in time and frequency.

[0104] In some possible implementations, when the polarization support capability of the second terminal includes support of circular polarization transceiving, if the first terminal initiates random access through random access resources supporting left-handed direction circular polarization and the second terminal initiates random access through random access resources supporting right-handed direction circular polarization, the satellite base station can feed back random access to the first terminal and the second terminal through random access resources supporting left-handed direction or right-handed direction circular polarization.

[0105] In some possible implementations, when the first terminal initiates random access through random access resources supporting left-handed direction circular polarization and the second terminal initiates random access through random access resources supporting right-handed direction circular polarization, the satellite base station can feed back random access to the first terminal through random access resources supporting left-handed direction circular polarization, and feed back random access to the second terminal through random access resources supporting right-handed direction circular polarization.

[0106] In some possible implementations, when the first terminal initiates random access through random access resources supporting left-handed direction circular polarization and the second terminal initiates random access through random access resources supporting right-handed direction circular polarization, the satellite base station can feed back random access to the second terminal through random access resources supporting left-handed direction circular polarization, and feed back random access to the first terminal through random access resources supporting right-handed direction circular polarization.

[0107] In some possible implementation manners, when the satellite base station supports linear polarization for the random access resource allocated to the first terminal, the random access resource supporting linear polarization includes random access resource supporting horizontal linear polarization and 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.

[0108] In some possible implementation manners, when the polarization support capability of the second terminal includes support for linear polarization transceiving, if the first terminal initiates random access through the random access resource supporting horizontal linear polarization, and the second terminal initiates random access through the random access resource supporting vertical linear polarization, the satellite base station can perform random access feedback to the first terminal and the second terminal through the random access resource supporting horizontal linear polarization or vertical linear polarization.

[0109] In some possible implementation manners, when the polarization support capability of the second terminal includes support for linear polarization transceiving, if the first terminal initiates random access through the random access resource supporting horizontal linear polarization, and the second terminal initiates random access through the random access resource supporting vertical linear polarization, the satellite base station can perform random access feedback to the first terminal through the random access resource supporting horizontal linear polarization, and perform random access feedback to the second terminal through the random access resource supporting vertical linear polarization.

[0110] In some possible implementation manners, when the first terminal initiates random access through the random access resource supporting horizontal linear polarization, and the second terminal initiates random access through the random access resource supporting vertical linear polarization, the satellite base station can perform random access feedback to the second terminal through the random access resource supporting horizontal linear polarization, and perform random access feedback to the first terminal through the random access resource supporting vertical linear polarization.

[0111] In some possible implementation manners, for random access resource of circular polarization, feedback can be performed for a certain polarization direction, for example, for random access resource of two polarization directions, two terminals (such as the first terminal and the second terminal) can initiate random access request using preamble sequences (random preamble sequences) with the same ID, and the satellite base station can perform 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).

[0112] In some possible implementation manners, the polarization identifier (wherein the polarization identifier is used to indicate a polarization mode or a polarization direction) can be included in the random access response, the polarization identifier corresponding to different preamble IDs can be different, and each polarization identifier has corresponding timing advance (TA) feedback. The TA is an amount of timing advance adjustment detected by the satellite base station according to the preamble sequence, and the terminal can perform timing advance adjustment according to the TA when sending msg3 (initiating random access competition), which is conducive to better implementation of uplink synchronization.

[0113] In some possible implementation manners, the terminal (such as the first terminal and the second terminal) can determine its TA according to the preamble ID and the polarization direction of initiating random access (in the random access response sent by the satellite base station, the polarization identifier corresponding to different preamble IDs can be different, and each polarization identifier has corresponding timing advance (TA) feedback).

[0114] In some possible implementation manners, for the same preamble ID, the random access competition resources (such as resources for sending Msg3) configured for terminals (such as the first terminal and the second terminal) in different polarization directions can be the same or different. In addition, the random access competition resources can be left and right polarization common by default, or the polarization direction (for example, left circular polarization, right circular polarization, horizontal linear polarization, and vertical linear polarization) of the current random access competition resources can also be indicated by indication.

[0115] It can be seen that the above example scheme can realize flexible scheduling of terminal random access, which is conducive to improving the access capacity and reducing the access conflict.

[0116] Referring to Figure 6 The embodiments of the present application also provide a communication device 600, which can include:

[0117] The processor 610 and the memory 620 are coupled to each other, and the processor is used to invoke the program stored in the memory to implement part or all steps of any method provided by the embodiments of the present application.

[0118] The processor in the embodiments of the present application is also called a central processing unit (CPU). In specific applications, various components are coupled together through a bus system. The bus system can include a data bus, a power supply bus, a control bus, a status signal bus, etc. in addition to the data bus. Any one of the methods disclosed in the embodiments of the present application can be applied to or implemented by the processor. The processor can be an integrated circuit chip with a processing capability. In some implementation processes, part or all of the steps of the above method can be completed by integrated logic circuits or instructions in software form in the processor. The processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a ready programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied in hardware execution or a combination of hardware and software module execution. The software module is located in a relatively mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory or a register. The storage medium is located in a memory, for example, the processor can read information in the memory, and in combination with the hardware, complete part or all of the steps of the above method.

[0119] The embodiments of the present application also provide a computer readable storage medium storing a computer program, and the computer program is executed by hardware (for example, a processor) to implement part or all of the steps of any one of the methods performed by any device in the embodiments of the present application.

[0120] The embodiments of the present application also provide a computer program product including instructions, and when the instructions included in the computer program product run on a computer device, the computer device can execute part or all of the steps of any one of the methods in the embodiments of the present application.

[0121] In the embodiments described above, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product can 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 the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. containing one or more available media. The available media can be magnetic media (such as floppy disk, hard disk or magnetic tape), optical media (such as optical disk), or semiconductor media (such as solid state disk) and the like. In the above embodiments, the description of each embodiment is focused on the description of each embodiment, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0122] In the above embodiments, the description of each embodiment is focused on the description of each embodiment, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0123] In several embodiments provided in the present application, it should be understood that the disclosed device can also be implemented by other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the indirect coupling or direct coupling or communication connection between the units shown or discussed can be through some interface, device or unit, and can be electrical or other forms.

[0124] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the scheme of the embodiments.

[0125] The functional units in the embodiments of the present application can be integrated in one processing unit, or each unit can exist alone physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0126] When 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 computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or partly, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (for example, a personal computer, a server, or a network device) to perform all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: various types of portable or fixed storage media that can store program codes, such as a USB (Universal Serial Bus) flash disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disk.

Claims

1. A communication method, characterized in that, include: The satellite base station determines the polarization support capability of the first terminal; Based on the polarization support capability of the first terminal, communication is performed with the first terminal.

2. The method according to claim 1, characterized in that, 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, and the polarization support capability indication is used to indicate 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 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; The linear polarization receiver includes vertical linear polarization receiver and / or horizontal linear polarization receiver; The linearly polarized generator includes a vertically polarized generator and / or a horizontally polarized generator; Wherein, the circular polarization receiver includes a left-hand circular polarization receiver and / or a right-hand circular polarization receiver; The circularly polarized generator includes a left-handed circularly polarized generator and / or a right-handed circularly polarized generator.

4. The method according to any one of claims 1 to 3, characterized in that, The communication with the first terminal based on the polarization support capability of the first terminal includes: 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; and receives a reference signal measurement report reported by the first terminal, the reference signal measurement report including reference signal measurement results for linear polarization and circular polarization respectively; 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; 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.

5. The method according to any one of claims 1 to 4, characterized in that, The communication with the first terminal based on the polarization support capability of the first terminal includes: 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 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. 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 the first TB group through the first scheduling command. 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. or, 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 indexes 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.

6. The method according to claim 5, characterized in that, 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 may use 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 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. Alternatively, when the polarization support capability of the first terminal includes support for linear polarization transceiver, the random access resources allocated by the satellite base station to the first terminal support linear polarization; Alternatively, when 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.

8. The method according to claim 7, characterized in that, 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.

9. The method according to claim 8, characterized in that, When the polarization support capability of the second terminal includes support for circular polarization transmission and reception, the method further includes: 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. or, 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; the satellite base station provides random access feedback to the second terminal through random access resources supporting right-hand circular polarization. or, 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.

10. The method according to claim 7, characterized in that, 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.

11. The method according to claim 10, characterized in that, When the polarization support capability of the second terminal includes support for linear polarization transmission and reception, the method further includes: 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. or, 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. or, 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.

12. A communication method, characterized in that, include: The first terminal sends 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 first terminal communicates with the satellite base station based on the polarization support capability of the first terminal.

13. A communication device, characterized in that, include: Intercoupled processors and memory; The processor is used to invoke a program stored in the memory to implement the method according to any one of claims 1 to 12.

14. A communication chip, characterized in that, The communication chip is used to implement the method according to any one of claims 1 to 13.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program that, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 13.

16. A computer program product, characterized in that, The computer program product includes a computer program that, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 13.

Images