Polarization indicating method, polarization determining method and device, communication device, and storage medium

Abstract

The present disclosure relates to a polarization instruction method, a polarization determination method and device, a communication device, and a storage medium, and the polarization instruction method includes a step of transmitting first instruction information for indicating a target polarization scheme to be used for communication between a terminal and a satellite in a non-terrestrial network to the terminal. According to the present disclosure, after determining a target polarization scheme, a base station can generate first instruction information for indicating the target polarization scheme and transmit the first instruction information to the terminal, so that the terminal can determine a target polarization scheme to be used for communication with a satellite in a non-terrestrial network based on the first instruction information and communicate with the satellite in the target polarization scheme, thereby avoiding a difference between the polarization scheme adopted by the terminal and the polarization scheme adopted by the satellite when communicating between the terminal and the satellite, and ensuring good communication between the terminal and the satellite.

Description

[Technical Field]

[0001] The present application relates to the field of communication technology, and in particular to a polarization indicating method, a polarization determining method, a polarization indicating device, a polarization determining device, a communication device, and a computer-readable storage medium. [Background technology]

[0002] In terrestrial networks, the polarization of communication between terminals and base stations is usually fixed and linearly polarized. However, in non-terrestrial networks (NTNs), terminals must communicate via satellites.

[0003] Because satellites operate at high altitudes, when they communicate with terminals, the transmitted signals must pass through the ionosphere and drizzle layer, which affect them. Linearly polarized signals can be affected by electromagnetic interference as they pass through the ionosphere, causing the polarization direction to change, and the drizzle layer can cause bit errors. Due to these factors, satellites usually communicate using circular polarization.

[0004] Because terminals typically communicate using linear polarization and satellites typically communicate using circular polarization, the polarization systems of the terminal and satellite may not match, which may affect the communication quality between the terminal and satellite and may even prevent the satellite from communicating with the terminal. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of this, to solve the technical problems in the related art, the embodiments of the present disclosure propose a polarization indicating method, a polarization determining method, a polarization indicating device, a polarization determining device, a communication device, and a computer-readable storage medium. [Means for solving the problem]

[0006] According to a first aspect of an embodiment of the present disclosure, a polarization instruction method is proposed, which is applied to a base station, and includes a step of transmitting first instruction information to the terminal to indicate a target polarization scheme to be used for communication between the terminal and a satellite in a non-terrestrial network.

[0007] According to a second aspect of an embodiment of the present disclosure, a polarization determination method is proposed, which is applied to a terminal, and includes a step of determining a target polarization method to be used for communication with a base station based on first instruction information transmitted from the base station.

[0008] According to a third aspect of an embodiment of the present disclosure, there is proposed a polarization indication device to be applied to a base station, the polarization indication device including one or more processors configured to transmit first indication information to a terminal to indicate a target polarization scheme to be used for communication between the terminal and a satellite in a non-terrestrial network.

[0009] According to a fourth aspect of an embodiment of the present disclosure, there is proposed a polarization determination device to be applied to a terminal, the polarization determination device including one or more processors configured to determine a target polarization scheme to be used for communication with a base station based on first instruction information transmitted from the base station.

[0010] According to a fifth aspect of an embodiment of the present disclosure, there is proposed a communication device including a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the above-mentioned polarization indication method.

[0011] According to a sixth aspect of an embodiment of the present disclosure, there is proposed a communication device including a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the above-mentioned polarization determination method.

[0012] According to a seventh aspect of an embodiment of the present disclosure, there is proposed a computer-readable storage medium for storing a computer program which, when executed by a processor, implements the steps of the above polarization indication method.

[0013] According to an eighth aspect of the embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps of the above polarization determination method.

[0014] According to an embodiment of the present disclosure, after determining the target polarization scheme, the base station can generate first instruction information to indicate the target polarization scheme and send the first instruction information to the terminal, so that the terminal can determine the target polarization scheme to be used for communication with a satellite in a non-terrestrial network based on the first instruction information and communicate with the satellite using the target polarization scheme, thereby avoiding the polarization scheme adopted by the terminal and the polarization scheme adopted by the satellite being different when communicating with the terminal, and ensuring good communication between the terminal and the satellite. [Brief explanation of the drawings]

[0015] In order to more clearly explain the technical configuration of the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments will be briefly described below. However, it should be clear that the drawings in the following description are only some embodiments of the present disclosure, and a person skilled in the art can obtain other drawings based on these drawings without making any creative efforts. [Figure 1] 1 is a schematic flowchart of a polarization indication method according to an embodiment of the present disclosure. [Figure 2] 10 is a schematic flowchart of another polarization indication method according to an embodiment of the present disclosure. [Figure 3] 10 is a schematic flowchart of yet another polarization indication method according to an embodiment of the present disclosure. [Figure 4] 1 is a schematic flowchart of a polarization determination method according to an embodiment of the present disclosure. [Figure 5]10 is a schematic flowchart of another polarization determination method according to an embodiment of the present disclosure. [Figure 6] FIG. 1 is a schematic block diagram of an apparatus for polarization indication according to an embodiment of the present disclosure. [Figure 7] FIG. 1 is a schematic block diagram of an apparatus for polarization determination according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0016] The technical configurations of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. It is clear that the described embodiments are not all embodiments, but only some embodiments of the present disclosure. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present disclosure without creative efforts are included in the scope of protection of the present disclosure.

[0017] The terms used in the embodiments of the present disclosure are intended to describe particular embodiments only and are not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and in the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to all possible combinations of one or more of the associated listed items.

[0018] In the embodiments of the present disclosure, terms such as first, second, and third may be used to describe various pieces of information, but these information should not be limited to these terms. These terms are used only to distinguish between pieces of information of the same type. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the embodiments of the present disclosure. It should be understood that the term "upon" used herein may be interpreted as "when," "when," or "in response to a determination," depending on the context.

[0019] For brevity and ease of understanding, the terms used herein to characterize size relationships are "greater than" or "smaller than," "higher than" or "lower than." However, one skilled in the art will understand that the term "greater than" also covers the meaning of "greater than or equal to," the term "smaller than" also covers the meaning of "greater than or equal to," the term "higher than" also covers the meaning of "greater than or equal to," and the term "lower than" also covers the meaning of "greater than or equal to."

[0020] FIG. 1 is a schematic flowchart of a polarization instruction method according to an embodiment of the present disclosure. The polarization instruction method according to this embodiment is applicable to a base station, which can communicate with a terminal in a non-terrestrial network, for example, via an airborne satellite. Here, the communication method via a satellite includes, but is not limited to, transparent transmission and non-transparent transmission (also known as on-satellite regeneration). In the related art, the transparent transmission method refers to a base station and a satellite as two separate devices. The non-transparent transmission method refers to a satellite functioning as a base station, i.e., the satellite and the base station are the same electronic device or different circuit boards of the same electronic device. In all embodiments of the present disclosure, there is no limitation as to whether the base station and the satellite are the same device. At the same time, those skilled in the art will understand that if the satellite and the base station are the same device, the satellite and the base station mentioned in the embodiments may be the same entity (even if different names are used).

[0021] In one embodiment, the terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc. The base station includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, or a 6G base station. The base station may be a base station in a non-terrestrial network, and the terminal may be a terminal in a non-terrestrial network.

[0022] As shown in FIG. 1, the polarization instruction method can include the following step S101.

[0023] In step S101, the first indication information for indicating a target polarization scheme to be used for communication between the terminal and a satellite in a non-terrestrial network is sent to the terminal.

[0024] In one embodiment, before determining the target polarization mode, the terminal can receive the downlink signal transmitted from the satellite by some means and further receive the first indication information. For example, the terminal can perform blind detection on the downlink signal transmitted from the satellite, or the satellite can transmit the downlink signal in a circular polarization mode. In this case, the terminal can receive the signal using a linear polarization mode commonly used in terrestrial communication systems, but the reception effect is only slightly worse, and multiple receptions may be required to obtain reliable first indication information.

[0025] After determining the target polarization scheme, the terminal can communicate with the satellite in the target polarization scheme. For example, if the terminal determines, based on the first instruction information, that the target polarization scheme is the polarization scheme for downlink communication, the terminal can receive, in the target polarization scheme, a downlink signal transmitted from the satellite in the target polarization scheme. For example, if the terminal determines, based on the first instruction information, that the target polarization scheme is the polarization scheme for uplink communication, the terminal can transmit an uplink signal to the satellite in the target polarization scheme.

[0026] In one embodiment, the target polarization scheme instructed by the base station to the terminal may be a polarization scheme used for communication between the satellite and the terminal. For example, the base station determines the polarization scheme used for satellite communication as the target polarization scheme, and the target polarization scheme may be agreed upon in a protocol, or independently determined by the satellite and notified to the base station, or independently determined by the base station, or determined through negotiation between the satellite and the base station.

[0027] For example, the base station may determine the target polarization mode based on the influence of the ionosphere and / or precipitation layer on signal transmission between the ground and the satellite, allowing the satellite to communicate based on the target polarization mode and minimize the influence of the ionosphere and / or precipitation layer on signal transmission. Alternatively, the base station may determine the target polarization mode based on the antenna polarization modes of the terminals in the committee it serves.

[0028] In one embodiment, after determining the target polarization scheme, the base station can generate first instruction information for indicating the target polarization scheme and transmit the first instruction information to the terminal, thereby allowing the terminal to determine the target polarization scheme to be used for communication with a satellite in the non-terrestrial network based on the first instruction information and communicate with the satellite in the target polarization scheme, thereby avoiding a difference between the polarization scheme adopted by the terminal and the polarization scheme adopted by the satellite when communicating with the terminal and ensuring good communication between the terminal and the satellite.

[0029] In one embodiment, the first instruction information may include aging information for the target polarization mode. The aging information may be actual time or logical time. For example, the start and end may include a system frame number, a time slot, a time domain symbol, etc. The terminal can communicate with the satellite in the target polarization mode within a validity period corresponding to the aging information. After the validity period corresponding to the aging information has elapsed, the terminal can receive the first instruction information transmitted from the base station again or request the base station to transmit the first instruction information again, and communicate with the satellite in the target polarization mode indicated by the received first instruction information.

[0030] In one embodiment, the first instruction information may further include business information of a target polarization mode. The business information may include one or more business types, or may not include a specific business type and by default indicate the business the terminal is currently conducting. When information of a business type corresponding to the business information is transmitted, the terminal can communicate with the satellite in the target polarization mode. When information of another business type is transmitted, the terminal can re-receive the first instruction information transmitted from the base station or request the base station to re-transmit the first instruction information (the request may include information of the other business type, so that the target polarization mode indicated by the base station corresponds to the other business type), and can communicate with the satellite in the target polarization mode indicated by the re-received first instruction information.

[0031] In one embodiment, the target polarization mode includes at least one of linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization.

[0032] In one embodiment, the determined target polarization scheme indicated by the satellite by the first instruction information may include an uplink target polarization scheme for uplink transmission and a downlink target polarization scheme for downlink transmission. Here, the uplink target polarization scheme and the downlink target polarization scheme may be the same or different. The terminal can perform uplink transmission using the uplink target polarization scheme and receive downlink signals using the downlink target polarization scheme. For example, if the uplink target polarization scheme is left-handed circular polarization and the downlink target polarization scheme is right-handed circular polarization, the terminal can transmit information to the satellite using the left-handed circular polarization scheme and receive information transmitted from the satellite using the right-handed circular polarization scheme.

[0033] It should be understood that the target polarization scheme instructed by the satellite by the first instruction information may be determined by the base station, or the target polarization scheme instructed by the satellite by the first instruction information may be determined by the satellite. When the satellite operates as a base station, the two are the same device, and the device determines the target polarization scheme instructed by the satellite by the first instruction information. The explanation that the satellite and the base station may be the same device is similarly applicable to all subsequent embodiments, and therefore will not be repeated hereafter.

[0034] In one embodiment, the number of bits occupied by the first indication information is determined based on the number of selectable target polarization modes.

[0035] For example, if the selectable target polarization method only includes two types, namely, linear polarization and circular polarization, the first indication information can occupy one bit, for example, when the bit is 1, it indicates that the target polarization method is linear polarization, and when the bit is 0, it indicates that the target polarization method is circular polarization.

[0036] For example, if the selectable target polarization mode only includes four types: linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization, the first indication information can occupy two bits, for example, 11 indicates that the target polarization mode is linear polarization, 00 indicates that the target polarization mode is circular polarization, 01 indicates that the target polarization mode is right-handed circular polarization, and 10 indicates that the target mode is left-handed circular polarization.

[0037] In one embodiment, the step of sending the first indication information to the terminal includes sending the first indication information to the terminal in an explicit manner and / or an implicit manner.

[0038] A base station or a satellite (hereinafter referred to as a network device, i.e., the network device may be a base station or a satellite, and when the base station and the satellite are the same device, the network device is the device) may transmit the first instruction information to the terminal in an explicit manner, or may transmit the instruction information to the terminal in an implicit manner. The network device can select the manner of transmitting the first instruction information as needed, and may perform either one of the methods or both methods.

[0039] In one embodiment, the step of transmitting the first indication information to the terminal in an explicit manner includes the step of transmitting downlink control information including the first indication information to the terminal.

[0040] The network device can transmit downlink control information (Downlink Control Information, DCI) to the terminal, and can carry the first indication information in the downlink control information, thereby eliminating the need to transmit the first indication information separately, which is advantageous to saving communication resources.

[0041] In one embodiment, the first indication information is located in a dedicated information field for indicating a newly added target polarization scheme in the downlink control information, or in an existing information field for indicating other information in the downlink control information, and the other information is not transmitted in at least some communication processes between the network device and the terminal.

[0042] The network device can add a new information field to the downlink control information, where the information field is specialized for indicating the target polarization mode, and can set the first indication information in the information field.

[0043] The network device can set the first indication information in an existing information field in the downlink control information, where the information field is used to indicate other information but the other information is not transmitted in at least some of the communication processes between the network device and the terminal, thereby minimizing the impact on other information caused by setting the first indication information in the information field.

[0044] For example, the other information may be Hybrid Automatic Repeat reQuest (HARQ) information or Transport Block (TB) scheduling information. Taking Hybrid Automatic Repeat Request (HARQ) information as an example, when a network device and a terminal communicate in a non-terrestrial network, they need to communicate via a satellite, which results in a large communication delay. Therefore, a mechanism related to Hybrid Automatic Repeat Request (HARQ) can be implemented to prevent the Hybrid Automatic Repeat Request (HARQ) information from being transmitted. In this case, the first indication information can be set in an information field for indicating the Hybrid Automatic Repeat Request (HARQ) information in the downlink control information, thereby making full use of the information field in the downlink control information.

[0045] Note that the first instruction information transmitted from the network device to the terminal is not limited to being included in the downlink control information, and may be included in other downlink information, such as higher layer signaling or a Media Access Control Control Element (MAC CE).

[0046] In one embodiment, the step of sending the first indication information to the terminal in an implicit manner includes the steps of determining a scrambling sequence and / or a radio network temporary identifier corresponding to the target polarization scheme, and sending signaling scrambled by the scrambling sequence and / or the radio network temporary identifier to the terminal.

[0047] The network device may select a scrambling sequence corresponding to the target polarization mode to scramble the signaling sent to the terminal, and may scramble the signaling sent to the terminal with a Radio Network Temporary Identity (RNTI) corresponding to the target polarization mode. The signaling may be a scheduling signaling, and may be scrambled on a CRC (Cyclic Redundancy Check) of the scheduling information, for example.

[0048] For example, the network device scrambles the signaling sent to the terminal using a scrambling sequence corresponding to a target polarization mode. After receiving the signaling, the terminal can descramble the signaling using at least one descrambling sequence. Each descrambling sequence corresponds to a polarization mode. If the descrambling is successful, the terminal can determine the polarization mode corresponding to the descrambling sequence that successfully descrambled the signaling as the target polarization mode.

[0049] For example, the network device scrambles the signaling sent to the terminal by a wireless network temporary identifier corresponding to a target polarization scheme. After receiving the signaling, the terminal can descramble the signaling by at least one wireless network temporary identifier, where each wireless network temporary identifier corresponds to a polarization scheme. If the descrambling is successful, the terminal can determine the polarization scheme corresponding to the wireless network temporary identifier that has successfully descrambled the signaling as the target polarization scheme.

[0050] This eliminates the need for the network device to directly transmit the first indication information to the terminal, and allows the terminal to determine the target polarization mode, which is advantageous in saving communication resources.

[0051] In one embodiment, the network device implicitly transmitting the first instruction information to the terminal may refer to the network device transmitting the first instruction information once, and the terminal subsequently communicating with the satellite using the target polarization scheme indicated by the currently received first instruction information. For example, after the terminal receives the first instruction information once, it needs to receive the first instruction information again after the validity period to re-determine the target polarization scheme. However, if the terminal does not receive the first instruction information again after the validity period, when it needs to communicate with the satellite, it can still communicate with the satellite using the target polarization scheme indicated by the most recently received first instruction information.

[0052] In one embodiment, the network device sending the first instruction information to the terminal in an implicit manner may indicate that the target polarization scheme instructed by the network device by the first instruction information corresponds to one of uplink transmission and downlink transmission, and that when the terminal performs the other of uplink transmission and downlink transmission, the terminal communicates with the satellite in the target polarization scheme or a polarization scheme opposite to the target polarization scheme indicated by the currently received first instruction information. For example, if the first instruction information indicates that the terminal communicates with the satellite in the target polarization scheme when performing uplink transmission, the terminal can also communicate with the satellite in the target polarization scheme when performing downlink transmission.

[0053] An embodiment of the present disclosure proposes a schematic flowchart of a polarization determination method, the method including the steps of determining a target planning mode from a polarization mode supported by a terminal.

[0054] In some possible embodiments, the method may be implemented alone or in combination with any other embodiment of the present disclosure, for example, in combination with step 101.

[0055] In some possible implementations, the method includes steps S201 and S202, as shown in FIG.

[0056] In step S201, capability information transmitted from the terminal is received, and a polarization scheme supported by the terminal is determined based on the capability information.

[0057] In step S202, the target polarization mode is determined from the polarization modes supported by the terminal.

[0058] In one embodiment, the terminal reports its capability information to the network device, and the capability information can inform the network device of the polarization mode supported by the terminal. The network device can determine a target polarization mode from the polarization mode supported by the terminal. This can ensure that the target polarization mode determined by the network device is the polarization mode supported by the terminal, and that the terminal can communicate with the satellite in the target polarization mode.

[0059] 3 is a schematic flowchart of a polarization indication method according to an embodiment of the present disclosure. As shown in FIG. 3, the method includes step S301.

[0060] In step S301, second instruction information is sent to a satellite in a non-terrestrial network, the second instruction information being used by the satellite to communicate with the terminal in the target polarization mode.

[0061] In some possible embodiments, the method may be implemented alone or in combination with any other embodiment of the present disclosure, for example, in combination with step 101 and / or steps 201 & 202.

[0062] In one embodiment, the satellite may transmit second instruction information to the satellite, and the second instruction information may instruct the satellite to communicate with the terminal in the target polarization mode, thereby ensuring that both the terminal and the satellite communicate in the target polarization mode.

[0063] Note that step S301 is executed only when the target polarization method is determined independently by the base station. If the target polarization method is determined independently by the satellite and notified to the base station, or if it is determined through negotiation between the satellite and the base station, the satellite already knows the target polarization method, so step S301 does not need to be executed, and wasteful use of communication resources is avoided. Naturally, step S301 does not need to be executed even when the satellite and the base station are the same device.

[0064] 4 is a schematic flowchart of a polarization determination method according to an embodiment of the present disclosure. The polarization indication method shown in this embodiment is applicable to a terminal that can communicate with a base station in a non-terrestrial network, for example, can communicate with the base station via an airborne satellite, where the communication method via the satellite includes, but is not limited to, transparent transmission and non-transparent transmission (also known as on-satellite regeneration).

[0065] In one embodiment, the terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc. The base station includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, or a 6G base station. The base station may be a base station in a non-terrestrial network, and the terminal may be a terminal in a non-terrestrial network.

[0066] As shown in FIG. 4, the polarization determination method can include the following step S401.

[0067] In step S401, a target polarization scheme to be used for communication with a network device is determined based on first instruction information sent from the network device.

[0068] In one embodiment, before determining the target polarization mode, the terminal can receive the downlink signal transmitted from the satellite by some means and further receive the first indication information. For example, the terminal can perform blind detection on the downlink signal transmitted from the satellite, or the satellite can transmit the downlink signal in a circular polarization mode. In this case, even if the terminal uses the linear polarization mode in the normal communication process, it can receive some signals, and the reception effect is only slightly poor. Although the terminal cannot obtain the complete first indication information in one reception, it can obtain the complete first indication information by receiving it multiple times.

[0069] After determining the target polarization scheme, the terminal can communicate with the satellite in the target polarization scheme. For example, if the terminal determines, based on the first instruction information, that the target polarization scheme is the polarization scheme for downlink communication, the terminal can receive, in the target polarization scheme, a downlink signal transmitted from the satellite in the target polarization scheme. For example, if the terminal determines, based on the first instruction information, that the target polarization scheme is the polarization scheme for uplink communication, the terminal can transmit an uplink signal to the satellite in the target polarization scheme.

[0070] In one embodiment, the target polarization scheme instructed by the network device to the terminal may be the polarization scheme used for communication between the satellite and the terminal. For example, the network device determines the polarization scheme used for satellite communication as the target polarization scheme, and the target polarization scheme may be agreed upon in a protocol, independently determined by the satellite and notified to the base station, independently determined by the base station, or determined through negotiation between the satellite and the base station. Of course, if the satellite and the base station are the same device (also referred to as a network device), the target polarization scheme is agreed upon in a protocol and can be determined by the network device.

[0071] For example, the network device can determine the target polarization method based on the influence of the ionosphere and / or precipitation layer on signal transmission between the ground and the satellite, so that the satellite can communicate based on the target polarization method and minimize the influence of the ionosphere and / or precipitation layer on signal transmission.

[0072] In one embodiment, after determining the target polarization scheme, the network device can generate first instruction information for indicating the target polarization scheme and send the first instruction information to the terminal, thereby allowing the terminal to determine the target polarization scheme to be used for communication with a satellite in the non-terrestrial network based on the first instruction information and communicate with the satellite in the target polarization scheme, thereby avoiding a difference between the polarization scheme adopted by the terminal and the polarization scheme adopted by the satellite when communicating with the terminal, and ensuring good communication between the terminal and the satellite.

[0073] In one embodiment, the first instruction information may include aging information for the target polarization mode. The aging information may be actual time or logical time. For example, the start and end may include a system frame number, a time slot, a time domain symbol, etc. The terminal can communicate with the satellite in the target polarization mode within a validity period corresponding to the aging information. After the validity period corresponding to the aging information has elapsed, the terminal can receive the first instruction information sent from the network device again or request the network device to send the first instruction information again, and communicate with the satellite in the target polarization mode indicated by the received first instruction information.

[0074] In one embodiment, the first instruction information may further include business information of a target polarization mode. The business information may include one or more business types, or may not include a specific business type and, by default, indicate the business the terminal is currently conducting. When information of a business type corresponding to the business information is transmitted, the terminal can communicate with the satellite in the target polarization mode. When information of another business type is transmitted, the terminal can re-receive the first instruction information transmitted from the network device, or request the network device to re-transmit the first instruction information (the request may include information of the other business type, so that the target polarization mode indicated by the network device corresponds to the other business type), and communicate with the satellite in the target polarization mode indicated by the re-received first instruction information.

[0075] In one embodiment, the target polarization mode includes at least one of linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization.

[0076] In one embodiment, the target polarization scheme determined by the network device and instructed by the satellite by the first instruction information may include an uplink target polarization scheme for uplink transmission and a downlink target polarization scheme for downlink transmission. Here, the uplink target polarization scheme and the downlink target polarization scheme may be the same or different. The terminal can perform uplink transmission using the uplink target polarization scheme and receive downlink signals using the downlink target polarization scheme. For example, if the uplink target polarization scheme is left-handed circular polarization and the downlink target polarization scheme is right-handed circular polarization, the terminal can transmit information to the satellite using the left-handed circular polarization scheme and receive information transmitted from the satellite using the right-handed circular polarization scheme.

[0077] In one embodiment, the step of determining a target polarization scheme to be used for communication with a network device based on first instruction information transmitted from the network device includes the steps of receiving downlink control information transmitted from the network device and obtaining the first instruction information from the downlink control information.

[0078] The network device can transmit downlink control information to the terminal, and the first indication information can be carried in the downlink control information, which eliminates the need to transmit the first indication information separately and is advantageous in saving communication resources.

[0079] In one embodiment, the step of obtaining the first indication information from the downlink control information includes the step of obtaining the first indication information from an information field dedicated to indicating a newly added target polarization scheme in the downlink control information, or the step of obtaining the first indication information from an existing information field for indicating other information in the downlink control information, and the other information is not transmitted in at least some communication processes between the network device and the terminal.

[0080] The network device can add a new information field to the downlink control information, where the information field is specialized for indicating the target polarization mode, and can set the first indication information in the information field.

[0081] The network device can set the first indication information in an existing information field in the downlink control information, where the information field is used to indicate other information but the other information is not transmitted in at least some of the communication processes between the network device and the terminal, thereby minimizing the impact on other information caused by setting the first indication information in the information field.

[0082] For example, the other information may be hybrid automatic repeat request information or transport block scheduling information. Taking hybrid automatic repeat request information as an example, when a network device and a terminal communicate in a non-terrestrial network, they need to communicate via a satellite, which results in a large communication delay. Therefore, a mechanism related to hybrid automatic repeat request can be implemented to prevent the hybrid automatic repeat request information from being transmitted. In this case, the first indication information can be set in an information field for indicating the hybrid automatic repeat request information in the downlink control information, thereby making full use of the information field in the downlink control information.

[0083] It should be noted that the first instruction information transmitted from the network device to the terminal is not limited to being included in the downlink control information, and may be included in other downlink information, such as higher layer signaling or a media access control layer control element.

[0084] In one embodiment, the step of determining a target polarization scheme to be used for communication with the network device based on first instruction information transmitted from the network device includes the steps of descrambling signaling transmitted from the network device using a descrambling sequence and / or a wireless network temporary identifier, and determining, as the target polarization scheme, the polarization scheme corresponding to the descrambling sequence and / or the wireless network temporary identifier that successfully descrambled the signaling.

[0085] The network device may select a scrambling sequence corresponding to the target polarization mode to scramble the signaling sent to the terminal, and may scramble the signaling sent to the terminal with a wireless network temporary identifier corresponding to the target polarization mode. The signaling may be scheduling signaling, and may be scrambled on a CRC of scheduling information, for example.

[0086] For example, the network device scrambles the signaling sent to the terminal using a scrambling sequence corresponding to a target polarization mode. After receiving the signaling, the terminal can descramble the signaling using at least one descrambling sequence. Each descrambling sequence corresponds to a polarization mode. If the descrambling is successful, the terminal can determine the polarization mode corresponding to the descrambling sequence that successfully descrambled the signaling as the target polarization mode.

[0087] For example, the network device scrambles the signaling sent to the terminal by a wireless network temporary identifier corresponding to a target polarization scheme. After receiving the signaling, the terminal can descramble the signaling by at least one wireless network temporary identifier, where each wireless network temporary identifier corresponds to a polarization scheme. If the descrambling is successful, the terminal can determine the polarization scheme corresponding to the wireless network temporary identifier that has successfully descrambled the signaling as the target polarization scheme.

[0088] This eliminates the need for the network device to directly transmit the first indication information to the terminal, and allows the terminal to determine the target polarization mode, which is advantageous in saving communication resources.

[0089] In one embodiment, the method further includes continuing to communicate with the network device in the target polarization mode in response to not receiving other instruction information indicating a polarization mode transmitted from the network device within a predetermined period after receiving the first instruction information.

[0090] After receiving the first instruction information once, the terminal needs to receive the first instruction information again within a predetermined period to re-determine the target polarization mode. However, if the terminal does not receive the first instruction information again after the validity period, when the terminal needs to communicate with the satellite, it can still communicate with the satellite using the target polarization mode indicated by the first instruction information it received most recently.

[0091] In one embodiment, the step of determining a target polarization scheme to be used for communication with the network device based on first indication information transmitted from the network device includes: determining an uplink polarization scheme for uplink transmission to the satellite based on first indication information sent from the network device; and determining a downlink polarization scheme for receiving downlink transmission of the satellite based on a first association between polarization schemes corresponding to uplink transmission and downlink transmission; or The method includes determining a downlink polarization scheme for receiving a downlink transmission of the satellite based on first instruction information sent from the network device, and determining an uplink polarization scheme for an uplink transmission to the satellite based on a second association between the downlink transmission and the polarization scheme corresponding to the downlink transmission.

[0092] The network device can make the target polarization scheme indicated by the first instruction information correspond to one of the uplink transmission and the downlink transmission, and when the terminal performs the other of the uplink transmission and the downlink transmission, it can determine the polarization scheme to be used for the other based on the association between the polarization schemes corresponding to the two.

[0093] For example, if the first association is the same, the terminal can use the uplink polarization scheme as the downlink polarization scheme. For example, if the first association is opposite, the terminal can use a scheme opposite to the uplink polarization scheme as the downlink polarization scheme. Here, the opposite scheme refers to the opposite between linear polarization and circular polarization, and the opposite between left-handed circular polarization and right-handed circular polarization. For example, if the first association is opposite, and the uplink polarization scheme is linear polarization, the terminal can use circular polarization (which may be left-handed circular polarization or right-handed circular polarization) as the downlink polarization scheme.

[0094] Similarly, for example, if the second association is the same, the terminal can use the downlink polarization scheme as the uplink polarization scheme, and for example, if the second association is opposite, the terminal can use the opposite of the downlink polarization scheme as the uplink polarization scheme.

[0095] 5 is a schematic flowchart of another polarization determination method according to an embodiment of the present disclosure. As shown in FIG. 5, the method further includes step S501.

[0096] In step S501, capability information is sent to the network device, where the network device determines the polarization mode supported by the terminal according to the capability information, or the capability information is directly used to indicate the polarization mode supported by the terminal.

[0097] In one embodiment, the terminal can report its capability information to the network device, and the capability information can inform the network device of the polarization mode supported by the terminal, and the network device can determine the target polarization mode from the polarization mode supported by the terminal, thereby ensuring that the target polarization mode determined by the network device is the polarization mode supported by the terminal and that the terminal can communicate with the satellite in the target polarization mode.

[0098] Corresponding to the above-mentioned embodiments of the polarization indicating method and the polarization determining method, the present disclosure provides embodiments of a polarization indicating device and a polarization determining device.

[0099] An embodiment of the present disclosure further proposes a polarization indicating device, the device being applied to a base station, and the base station being capable of communicating with a terminal in a non-terrestrial network, for example, capable of communicating with the terminal via an airborne satellite, where the manner of communicating via the satellite includes, but is not limited to, transparent transmission and non-transparent transmission (also known as on-satellite regeneration), etc. In the non-transparent transmission mode, the satellite and the base station may be the same device, and the device is applicable to the device.

[0100] In one embodiment, the terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc. The base station includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, or a 6G base station. The base station may be a base station in a non-terrestrial network, and the terminal may be a terminal in a non-terrestrial network.

[0101] In one embodiment, the polarization indication device includes one or more processors, and the processors are configured to send first indication information to the terminal to indicate a target polarization scheme to be used for communication between the terminal and a satellite in the non-terrestrial network.

[0102] In one embodiment, the processor is configured to transmit the first indication information to the terminal in an explicit manner and / or an implicit manner.

[0103] In one embodiment, the processor is configured to transmit downlink control information to the terminal, and the first indication information is included in the downlink control information.

[0104] In one embodiment, the first indication information is located in a dedicated information field for indicating a newly added target polarization scheme in the downlink control information, or in an existing information field for indicating other information in the downlink control information, and the other information is not transmitted in at least some communication processes between the base station and the terminal.

[0105] In one embodiment, the processor is configured to determine a scrambling sequence and / or a radio network temporary identifier corresponding to the target polarization scheme, and transmit signaling scrambled by the scrambling sequence and / or the radio network temporary identifier to the terminal.

[0106] In one embodiment, the processor is further configured to receive capability information transmitted from the terminal, determine a polarization scheme supported by the terminal based on the capability information, and determine the target polarization scheme from the polarization scheme supported by the terminal.

[0107] In one embodiment, the base station is a base station in a non-terrestrial network, and the terminal is a terminal in a non-terrestrial network.

[0108] In one embodiment, the processor is further configured to transmit second instruction information to a satellite in a non-terrestrial network for use by the satellite in communicating with the terminal in the target polarization mode.

[0109] In one embodiment, the target polarization mode includes at least one of linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization.

[0110] An embodiment of the present invention provides a polarization determination device, which is applicable to a terminal, and the terminal can communicate with a base station in a non-terrestrial network, for example, can communicate with the base station via an airborne satellite, where the manner of communicating via the satellite includes, but is not limited to, transparent transmission and non-transparent transmission (also known as on-satellite regeneration).

[0111] In one embodiment, the terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device, etc. The base station includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, or a 6G base station. The base station may be a base station in a non-terrestrial network, and the terminal may be a terminal in a non-terrestrial network.

[0112] In one embodiment, the polarization determination device includes one or more processors, and the processors are configured to determine a target polarization scheme to be used for communication with the base station based on first indication information transmitted from the base station.

[0113] In one embodiment, the processor is configured to receive downlink control information transmitted from the base station, and obtain the first indication information from the downlink control information.

[0114] In one embodiment, the processor is configured to obtain the first indication information from a dedicated information field for indicating a newly added target polarization scheme in the downlink control information, or obtain the first indication information from an existing information field for indicating other information in the downlink control information, and the other information is not transmitted in at least some communication processes between the base station and the terminal.

[0115] In one embodiment, the processor is configured to descramble signaling transmitted from a base station using a descrambling sequence and / or a wireless network temporary identifier, and determine, as a target polarization scheme, a polarization scheme corresponding to the descrambling sequence and / or the wireless network temporary identifier that successfully descrambled the signaling.

[0116] In one embodiment, the processor is further configured to continue communicating with the base station in the target polarization mode in response to not receiving other instruction information indicating the polarization mode transmitted from the base station within a predetermined period after receiving the first instruction information.

[0117] In one embodiment, the processor determines an uplink polarization scheme for uplink transmission to the satellite based on first indication information sent from the base station, and determines a downlink polarization scheme for receiving downlink transmission of the satellite based on a first association between polarization schemes corresponding to uplink transmission and downlink transmission; or The base station is configured to determine a downlink polarization scheme for receiving a downlink transmission of the satellite based on first indication information transmitted from the base station, and to determine an uplink polarization scheme for an uplink transmission to the satellite based on a second association between the downlink transmission and the polarization scheme corresponding to the downlink transmission.

[0118] In one embodiment, the processor is further configured to transmit capability information to the base station to indicate a polarization scheme supported by the terminal.

[0119] In one embodiment, the base station is a base station in a non-terrestrial network, and the terminal is a terminal in a non-terrestrial network.

[0120] In one embodiment, the target polarization mode includes at least one of linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization.

[0121] Regarding the apparatus of the above embodiment, the specific manner in which each module performs the operation has already been described in detail in the related method embodiment, and detailed description thereof will be omitted here.

[0122] Regarding the device embodiment, since it largely corresponds to the method embodiment, please refer to the description of some of the method embodiment for relevant parts. The device embodiment described above is merely exemplary, and the modules described as components may or may not be physically separated. The components shown as modules may or may not be physical modules. That is, the components may be located in one place or may be arranged in multiple network modules. To achieve the configuration goals of this embodiment, some or all of the modules may be selected according to actual needs. Those skilled in the art can understand and implement this embodiment without any creative effort.

[0123] An embodiment of the present disclosure further proposes a communication device including a processor and a memory for storing a computer program, the communication device realizing the polarization indication method described in any one of the above embodiments when the computer program is executed by the processor.

[0124] An embodiment of the present disclosure further proposes a communication device including a memory for storing a computer program, the communication device realizing the polarization determination method described in any one of the above embodiments when the computer program is executed by a processor.

[0125] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps of the polarization indication method described in any one of the above embodiments, the computer program being a computer-readable storage medium.

[0126] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps of the polarization determination method described in any one of the above embodiments, the computer program being a computer-readable storage medium.

[0127] As shown in FIG. 6, FIG. 6 is a block diagram of an apparatus 600 for polarization indication according to an embodiment of the present disclosure. For example, the apparatus 600 may be provided as a base station. The apparatus 600 includes a processing component 622, a radio transmit / receive component 624, an antenna component 626, and a signal processing part specific to the air interface, and the processing component 622 may further include one or more processors. One processor in the processing component 622 may be configured to implement the polarization indication method described in any one of the above embodiments.

[0128] 7 is a schematic block diagram of an apparatus 700 for determining polarization according to an embodiment of the present disclosure. For example, the apparatus 700 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0129] Referring to FIG. 7 , device 700 may include one or more of a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0130] The processing component 702 typically controls the overall operation of the device 700, such as operations related to display, phone calls, data communications, camera operation, and recording operations. The processing component 702 may include one or more processors 720 for executing instructions to complete all or some of the steps of the polarization determination method described above. The processing component 702 may also include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

[0131] Memory 704 is configured to store various types of data to support the operation of device 700. Examples of this data include instructions for any application programs or methods operating on device 700, contact data, phone book data, messages, images, videos, etc. Memory 704 may be implemented by any type of volatile or non-volatile storage device, or combinations thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0132] The power supply component 706 provides power to the various components of the device 700. The power supply component 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 700.

[0133] The multimedia component 708 includes a screen that provides an output interface between the device 700 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to detect touches, slides, and gestures on the touch panel. The touch sensors can detect not only the boundaries of the touch or slide motion, but also the duration and pressure associated with the touch or slide motion. In some embodiments, the multimedia component 708 includes one front camera and / or one rear camera. When the device 700 is in an operational mode, such as a photo mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may have a fixed optical lens system or a focal length and optical zoom capability.

[0134] The audio component 710 is configured to output and / or input audio signals. For example, the audio component 710 includes a microphone (MIC). The microphone is configured to receive external audio signals when the device 700 is in an operation mode such as a call mode, a record mode, or a voice recognition mode. The received audio signals are further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 further includes a speaker for outputting audio signals.

[0135] The I / O interface 712 provides an interface between the processing component 702 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0136] The sensor component 714 includes one or more sensors to provide status assessments of various aspects of the device 700. For example, the sensor component 714 can detect the on / off state of the device 700 and the relative position of the monitor and keypad components of the device 700. The sensor component 714 can also detect changes in the position of the device 700 or one of its components, whether or not a user is in contact with the device 700, the orientation or acceleration / deceleration of the device 700, and temperature changes of the device 700. The sensor component 714 can include a proximity sensor configured to detect whether or not an object is present in the vicinity in the absence of any physical contact. The sensor component 714 can further include an optical sensor, such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 714 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0137] The communication component 716 is configured to facilitate wired or wireless communication between the device 700 and other devices. The device 700 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0138] In an exemplary embodiment, the apparatus 700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the polarization determination method.

[0139] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions, such as a memory 704 containing instructions, is provided, which can be executed by a processor 720 of the apparatus 700 to complete the polarization determination method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0140] Other embodiments of the present invention will be readily apparent to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses, or variations of the present invention, which modifications, uses, or variations follow the general principles of the embodiments of the present invention and include common general knowledge or customary means in the art that are not disclosed in the examples of the present application. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the embodiments of the present invention being indicated by the following claims.

[0141] It should be understood that the present application is not limited to the exact configurations described above and illustrated in the drawings, and various modifications and variations can be made without departing from the scope thereof, which is limited only by the appended claims.

[0142] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply the existence of any actual relationship or order between those entities or operations. The terms "comprise," "comprises," and any other variations thereof are intended to cover a non-exclusive inclusion, whereby a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or device. Absent further limitations, an element defined by the phrase "comprising ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes said element.

[0143] The methods and devices provided by the embodiments of the present disclosure have been described in detail above. In this specification, specific examples are used to explain the principles and embodiments of the present disclosure. The above descriptions of the embodiments are merely intended to facilitate understanding of the method and the core idea of ​​the present disclosure. At the same time, those skilled in the art can modify the specific embodiments and application scope based on the idea of ​​the present disclosure. Therefore, the contents of this specification should not be understood as limitations of the present disclosure.

Claims

1. A polarization indication method applied to a base station, comprising: transmitting a first indication to the terminal to indicate a target polarization scheme to be used for communication between the terminal and a satellite in the non-terrestrial network; the first indication information causes the terminal to determine a downlink polarization scheme for receiving a downlink transmission of a satellite based on the first indication information, and to determine an uplink polarization scheme for an uplink transmission to the satellite based on a second association between polarization schemes corresponding to the downlink transmission and the uplink transmission; The step of transmitting the first instruction information to the terminal includes: determining a scrambling sequence and / or a wireless network temporary identifier corresponding to the target polarization scheme; transmitting signaling scrambled by the scrambling sequence and / or the wireless network temporary identifier to the terminal; A polarization indication method characterized by:

2. receiving capability information transmitted from the terminal, and determining a polarization scheme supported by the terminal based on the capability information; and determining the target polarization mode from polarization modes supported by the terminal.

2. The method of claim 1 .

3. The base station is a base station in a non-terrestrial network, and the terminal is a terminal in the non-terrestrial network.

2. The method of claim 1 .

4. and transmitting second instruction information to a satellite in a non-terrestrial network, the second instruction information being used by the satellite to communicate with the terminal in the target polarization mode.

4. The method of claim 3.

5. The target polarization mode includes at least one of linear polarization, circular polarization, left-handed circular polarization, and right-handed circular polarization.

2. The method of claim 1 .

6. A polarization determination method applied to a terminal, comprising: determining a target polarization scheme to be used for communication with the base station based on first indication information transmitted from the base station; The step of determining a target polarization scheme to be used for communication with the base station based on first instruction information transmitted from the base station includes: determining a downlink polarization scheme for receiving a satellite downlink transmission based on the first indication sent from the base station; determining an uplink polarization scheme for uplink transmission to the satellite based on a second association between polarization schemes corresponding to downlink transmission and uplink transmission; The step of determining a target polarization scheme to be used for communication with the base station based on first instruction information transmitted from the base station includes: descrambling signaling transmitted from said base station with a descrambling sequence and / or a wireless network temporary identifier; determining, as the target polarization scheme, a polarization scheme corresponding to a descrambling sequence and / or a wireless network temporary identifier that has successfully descrambled the signaling; A polarization determination method comprising:

7. and further comprising a step of continuing to communicate with the base station in the target polarization mode in response to not receiving other instruction information indicating the polarization mode transmitted from the base station within a predetermined period after receiving the first instruction information.

7. The method of claim 6.

8. The terminal further includes transmitting capability information to the base station to indicate a polarization scheme supported by the terminal.

7. The method of claim 6.

9. A polarization indicating device applied to a base station, one or more processors configured to perform the polarization indicating method of any one of claims 1 to 5, A polarization indicator device characterized by:

10. A polarization determination device applied to a terminal, comprising: one or more processors configured to perform the polarization determination method of any one of claims 6 to 8, A polarization determination device characterized by:

11. A computer-readable storage medium on which a computer program is stored, The computer program, when executed by a processor, implements the steps of the polarization indication method according to any one of claims 1 to 5. A computer-readable storage medium comprising:

12. A computer-readable storage medium on which a computer program is stored, The computer program, when executed by a processor, implements the steps of the polarization determination method according to any one of claims 6 to 8. A computer-readable storage medium comprising:

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