Code word transmission method and device and storage medium

Abstract

The invention relates to a code word transmission method and device and a storage medium, and the method comprises the steps: transmitting first information, the first information is used for indicating at least two code words, the at least two code words are mutually orthogonal, the code words are used for precoding data, the angle domain parameters in the at least two code words are mutually opposite numbers, and the angle domain parameters in the at least two code words are mutually orthogonal; the distance domain parameters in the at least two code words are equal, so that the at least two code words which are mutually orthogonal, the angle domain parameters of which are opposite numbers and the distance domain parameters of which are equal can be indicated, the at least two code words which are mutually orthogonal can be used for pre-coding the data, and furthermore, the pre-coding transmission of the data is ensured; and the reliability of data transmission is ensured.

Description

Codeword transmission method, device and storage medium Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to codeword transmission methods, apparatus and storage media. Background Technology

[0002] With the rapid development of mobile communication technology, multiple-antenna-multiplexing (MIMO) systems can effectively improve the capacity and throughput of wireless communication systems by equipping base stations with multiple antennas. Typically, the radiation range of an antenna array can be divided into near-field and far-field regions. In the near-field region, electromagnetic waves propagate as spherical waves, and the phase difference between adjacent antenna elements is no longer equal. Therefore, designing codewords that match the near-field characteristics is a problem that urgently needs to be solved.

[0003] Summary of the Invention

[0004] The scheme provided in this disclosure enables at least two codewords that are orthogonal to each other, have opposite angle domain parameters, and equal distance domain parameters, so that the at least two orthogonal codewords can pre-encode data, thereby ensuring the reliability of data transmission.

[0005] This disclosure provides a codeword transmission method, apparatus, and storage medium.

[0006] According to a first aspect of the present disclosure, a codeword transmission method is provided, the method being executed by a terminal, the method comprising:

[0007] Send a first message, which is used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites of each other, and the distance domain parameters in the at least two codewords being equal.

[0008] According to a second aspect of the present disclosure, a codeword transmission method is provided, the method being executed by a network device, the method comprising:

[0009] Receive first information, the first information being used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites to each other, and the distance domain parameters in the at least two codewords being equal.

[0010] According to a third aspect of the present disclosure, a codebook determination apparatus is provided, comprising: a processing module configured to send first information, the first information being configured to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites to each other, and the distance domain parameters in the at least two codewords being equal.

[0011] According to a fourth aspect of the present disclosure, a codebook determination apparatus is provided, comprising: a transceiver module for receiving first information, the first information being used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites to each other, and the distance domain parameters in the at least two codewords being equal.

[0012] According to a fifth aspect of the present disclosure, a terminal is provided, comprising: one or more processors; wherein the terminal is configured to perform any of the methods described in the first aspect.

[0013] According to a sixth aspect of the present disclosure, a network device is provided, comprising: one or more processors; wherein the network device is configured to perform any of the methods described in the first aspect.

[0014] According to a seventh aspect of the present disclosure, a communication system is provided, comprising: a terminal and a network device, wherein the terminal is configured to implement the codeword transmission method of the first aspect, and the network device is configured to implement the codeword transmission method of the second aspect.

[0015] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform the method as described in the first or second aspect. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and, together with their descriptions, serve to explain the embodiments of this disclosure and do not constitute an improper limitation of the embodiments of this disclosure. In the drawings:

[0017] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0018] Figure 2 is an interactive schematic diagram of a codeword transmission method according to an embodiment of the present disclosure;

[0019] Figure 3A is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0020] Figure 3B is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0021] Figure 4A is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0022] Figure 4B is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0023] Figure 5 is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0024] Figure 6 is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure;

[0025] Figure 7A is a schematic diagram of the codebook determination device proposed in an embodiment of this disclosure;

[0026] Figure 7B is a schematic diagram of the codebook determination device proposed in an embodiment of this disclosure;

[0027] Figure 8A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0028] Figure 8B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0029] This disclosure provides a codeword transmission method, apparatus, and storage medium.

[0030] In a first aspect, this disclosure provides a codeword transmission method, which is executed by a terminal, and the method includes:

[0031] Send a first message, which is used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites of each other, and the distance domain parameters in the at least two codewords being equal.

[0032] In the above embodiments, at least two codewords that are mutually orthogonal, have opposite angle domain parameters, and equal distance domain parameters are implemented, so that the at least two mutually orthogonal codewords can pre-encode the data, thereby ensuring the pre-encoded transmission of the data and guaranteeing the reliability of the data transmission.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

[0034] In the above embodiments, at least two mutually orthogonal codewords are determined based on the fact that the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword. This ensures the accuracy of the determined first condition, thereby ensuring the accuracy of determining at least two mutually orthogonal codewords, and subsequently ensuring the reliability of communication based on at least two codewords.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, the at least two codewords are determined based on at least one of angle domain parameters, range domain parameters, or antenna array parameters.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, each codeword corresponds to a layer.

[0037] In the above embodiments, each codeword corresponds to one layer, which can also be understood as determining at least two mutually orthogonal layers to ensure multi-layer transmission and thus ensure communication reliability.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, the at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters in the following vectors:

[0040] At least one of the following: the product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters; the product of the square of the antenna spacing and element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter; and the wavelength.

[0041] In the above embodiments, by quantizing at least one of the angle domain parameters or the distance domain parameters, the accuracy of the determined at least two codewords is ensured, thereby ensuring communication reliability.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of angle domain quantization index, distance domain quantization index, or co-phase coefficient;

[0043] The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters;

[0044] The distance domain quantization index is used to indicate the index when quantizing the distance domain parameters;

[0045] The co-phase coefficients are used to construct dual-polarization codewords.

[0046] In the above embodiments, by sending first information to indicate at least two mutually orthogonal codewords, the accuracy of the indicated at least two codewords is guaranteed, thereby ensuring communication reliability.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the number of antenna array elements included in the antenna array parameters is an even number.

[0048] Secondly, this disclosure provides a codeword transmission method, which is executed by a network device, and the method includes:

[0049] Receive first information, the first information being used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites to each other, and the distance domain parameters in the at least two codewords being equal.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

[0051] In conjunction with some embodiments of the second aspect, in some embodiments the at least two codewords are determined based on at least one of angle domain parameters, range domain parameters, or antenna array parameters.

[0052] In conjunction with some embodiments of the second aspect, in some embodiments, the at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

[0053] In conjunction with some embodiments of the second aspect, in some embodiments, each codeword corresponds to a layer.

[0054] In conjunction with some embodiments of the second aspect, in some embodiments, the at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters in the following vectors:

[0055] At least one of the following: the product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters; the product of the square of the antenna spacing and element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter; and the wavelength.

[0056] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of angle domain quantization index, distance domain quantization index, or co-phase coefficient;

[0057] The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters;

[0058] The distance domain quantization index is used to indicate the index when quantizing the distance domain parameters;

[0059] The co-phase coefficients are used to construct dual-polarization codewords.

[0060] In conjunction with some embodiments of the second aspect, in some embodiments, the number of antenna array elements included in the antenna array parameters is an even number.

[0061] Thirdly, embodiments of this disclosure provide a codebook determination device, which includes at least one of a transceiver module and a processing module; wherein the codebook determination device is used to execute an optional implementation of the first aspect.

[0062] Fourthly, embodiments of this disclosure provide a codebook determination device, which includes at least one of a transceiver module and a processing module; wherein the codebook determination device is used to execute an optional implementation of the second aspect.

[0063] Fifthly, embodiments of this disclosure provide a terminal, including: one or more processors; wherein the terminal is configured to perform the method described in any one of the first aspects.

[0064] In a sixth aspect, embodiments of this disclosure provide a network device, including: one or more processors; wherein the network device is configured to perform the method described in any one of the second aspects.

[0065] In a seventh aspect, embodiments of this disclosure provide a storage medium storing first information, which, when executed on a communication device, causes the communication device to perform the method as described in any one of the first or second aspects.

[0066] Eighthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in either the first or second aspect.

[0067] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the method described in either the first or second aspect.

[0068] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in either the first or second aspect.

[0069] It is understood that the aforementioned terminals, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0070] This disclosure provides a codeword transmission method, apparatus, and storage medium. In some embodiments, the terms codeword transmission method, codeword communication method, and codeword indication method can be used interchangeably; the terms codeword transmission apparatus, codeword communication apparatus, and codeword indication apparatus can be used interchangeably; and the terms information processing system and communication system can be used interchangeably.

[0071] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0072] In each of the disclosed embodiments, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0073] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0074] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0075] In the embodiments disclosed herein, "multiple" refers to two or more.

[0076] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0077] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0078] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0079] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0080] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0081] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0082] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0083] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0084] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0085] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0086] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0087] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (terminal)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0088] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0089] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0090] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0091] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the method provided in this embodiment can be applied to a communication system 100, which may include a terminal 101, a network device 102, and a terminal 103. It should be noted that the communication system 100 may also include other devices, and this disclosure does not limit the devices included in the communication system 100.

[0092] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, terminal, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0093] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0094] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0095] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0096] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0097] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0098] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0099] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0100] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other code transmission methods, and next-generation systems built upon them. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0101] Figure 2 is an interactive schematic diagram of a codeword transmission method according to an embodiment of the present disclosure. As shown in Figure 2, the embodiments of the present disclosure relate to a codeword transmission method, which includes:

[0102] In step S2101, the terminal and network device determine at least two mutually orthogonal codewords based on at least one of angle domain parameters, distance domain parameters, or antenna array parameters.

[0103] In some embodiments, the angle domain parameter refers to the angle between the terminal and the origin of the coordinate system in the antenna array. Optionally, the distance domain parameter refers to the distance between the terminal and the origin of the coordinate system in the antenna array. Optionally, the distance domain parameter includes the maximum distance or the minimum distance in the horizontal dimension. Optionally, the distance domain parameter includes the maximum distance or the minimum distance in the three-dimensional dimension, which is not limited in this disclosure. In some embodiments, the antenna array parameter is used to indicate the parameters of the antenna array configured in the network device.

[0104] Optionally, the antenna array parameters include at least one of the following:

[0105] (1) Number of antenna ports in the horizontal dimension.

[0106] (2) Number of antenna ports in the vertical dimension.

[0107] (3) Antenna spacing in the horizontal dimension.

[0108] (4) Vertical dimension antenna spacing.

[0109] In some embodiments, at least one of the aforementioned angle domain parameters, range domain parameters, or antenna array parameters is configured by the network device. Optionally, before step S2101, the network device sends configuration information to the terminal, which includes at least one of the angle domain parameters, range domain parameters, or antenna array parameters. Upon receiving the configuration information, the terminal can determine at least one of the angle domain parameters, range domain parameters, or antenna array parameters configured by the network device for the terminal using the configuration information. Optionally, the configuration information is carried in RRC (Radio Resource Control) signaling. Alternatively, the configuration information is carried in DCI (Downlink Control Information). It should be noted that the configuration information in this embodiment can also be agreed upon by the communication protocol, and this embodiment does not limit this.

[0110] In some embodiments, codewords are used to pre-encode data. In this embodiment of the disclosure, after determining the codeword, if the terminal or network device has data to be sent, the codeword can be used to pre-encode the data to be sent to obtain pre-encoded data, and then the pre-encoded data can be sent.

[0111] Optionally, the codewords in this embodiment belong to a codebook, which includes multiple codewords. This embodiment does not limit the scope of the codewords.

[0112] In some embodiments, the angle field parameters in at least two codewords are opposites of each other. Optionally, the angle field parameter refers to a trigonometric function value of the angle. For example, the trigonometric function value is at least one of a cosine function value and a sine function value.

[0113] For example, if the angle domain parameter is a cosine function value, then the angle domain parameters in at least two codewords being opposites means that the cosine function values ​​in at least two codewords are opposites. Optionally, if the at least two codewords include a first codeword and a second codeword, then the angle domain parameters in at least two codewords being opposites means that the cosine function value of the first codeword and the cosine function value of the second codeword are opposites.

[0114] In some embodiments, at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

[0115] For example, the square of the sine parameter included in the angle domain parameters of the first codeword is taken as sin 2 θ1 represents the distance domain parameter of the second codeword, r2 represents the distance domain parameter, and the square of the sine parameter included in the angle domain parameter of the second codeword is represented by sin. 2 θ2 represents the distance domain parameter of the first codeword, denoted by r1. The first product of the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product of the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword, meaning that sin... 2 θ1r2=sin 2 θ2r1.

[0116] In some embodiments, each codeword corresponds to one layer. It can also be understood that at least two mutually orthogonal codewords actually correspond to at least two mutually orthogonal layers. In embodiments of this disclosure, it can be applied to multi-layer transmission, where each layer corresponds to one codeword; therefore, determining at least two mutually orthogonal codewords can also be understood as two mutually orthogonal layers.

[0117] In some embodiments, at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters.

[0118] In some embodiments, at least two codewords are obtained by quantizing at least one of the angle domain parameters or distance domain parameters of the following vectors:

[0119] The product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters, the product of the square of the antenna spacing and element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter, and the wavelength, is at least one of the following:

[0120] Optionally, the product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters includes: the product of the cosine function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters.

[0121] Optionally, the product of the antenna spacing and the square of the element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter includes: the product of the antenna spacing and the square of the element position identifier in the antenna array parameters and the square of the sine function of the angle domain parameter.

[0122] Optionally,

[0123] The element in a codeword corresponding to the position identifier n of an element in the antenna array can be represented as:

[0124] Where N1 represents the number of sampling points in the horizontal dimension angle domain, λ represents the wavelength, d represents the antenna spacing, r represents the distance, and θ is the angle. That is, θ belongs to the angle domain parameter, r belongs to the distance domain parameter, and λ and d belong to the antenna array parameter.

[0125] Optionally, at least one of the angle domain parameters or distance domain parameters in the above formula can be quantized, wherein the cosine or sine value of the angle is uniformly quantized within a certain range, and the distance or the reciprocal of the distance is uniformly quantized within a certain range.

[0126] For example, uniformly quantizing cosθ in the range [-a, a] (a>0) results in quantization as... Where N1 represents the number of sampling points in the horizontal dimension angle domain, O1 represents the oversampling factor in the horizontal dimension angle domain, and l = 0, 1, ..., N1O1-1 represents the quantization index of the horizontal dimension angle domain.

[0127] For example, exist Perform uniform quantization, that is, quantize to For example, placing r in [r min ,r max Perform uniform quantization, that is, quantize to Where N3 represents the number of sampling points in the horizontal distance domain, O3 represents the oversampling factor in the horizontal distance domain, o1 = 0, 1, ..., N3O3-1 represents the quantization index in the horizontal distance domain, and r min and r maxThese represent the minimum and maximum values ​​of the quantization range in the horizontal distance domain, respectively. Optionally, they can be expressed as multiples of the wavelength, such as r. min =s min λ and r max =s max λ.

[0128] In some embodiments, the number of antenna elements included in the antenna array parameters is odd. In embodiments of this disclosure, if the number of antenna elements included in the antenna array parameters is odd, at least two codewords can be determined whose angle domain parameters are opposites of each other and whose distance domain parameters are equal and orthogonal to each other.

[0129] The following explains how to determine at least two mutually orthogonal codewords.

[0130] Wherein, the angle domain parameters and range domain parameters corresponding to the quantized codeword w1 are cosθ1 and r1, respectively, and the angle domain parameters and range domain parameters corresponding to the quantized codeword w2 are cosθ2 and r2, respectively. Then, the element in codeword w1 corresponding to the position identifier n of the array element in the antenna array is represented as... The element in codeword w2 corresponding to the position identifier n of the array element in the antenna array is represented as follows: If codewords w1 and w2 are orthogonal, then... make but

[0131] Without loss of generality, assuming n>0, we can obtain the following from Euler's formula:

[0132] like Just

[0133] Furthermore, for any n, the following equation holds, where C is a constant.

[0134] Depend on achievable And k is a positive integer (any two DFT vectors are orthogonal to each other).

[0135] Depend on If sine is constant, then sin 2 θ1r2=sin 2 θ2r1. If sin 2 θ1r2=sin 2 θ2r1 holds true for all 2, provided that r1 = r2 and cosθ1 = -cosθ2.

[0136] In some embodiments, the antenna spacing is Let's take a = 1 as an example to illustrate.

[0137] Optionally, when the transmission layer has 2 layers, the codeword can be designed as follows: It can be any codeword in a single-layer transmission codebook. It can be any codeword in a single-layer transmission codebook. For co-phase coefficients, they can be BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), or 8PSK (8-Phase Shift Keying), etc. For example, QPSK co-phase coefficients... It should be noted that the above codewords are applied to the dual-polar codebook.

[0138] Optionally, when the transmission layer has 3 layers, the codeword can be designed as follows: It can be any codeword in a single-layer transmission codebook. Is with Orthogonal character encoding must satisfy the following conditions: The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients... It should be noted that the above codewords are applied to the dual-polar codebook.

[0139] Optionally, when the transmission layer number is 4, the codeword can be designed as follows: It can be any codeword in a single-layer transmission codebook. Is with Orthogonal typing Is with Orthogonal character encoding must satisfy the following conditions: The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients... It should be noted that the above codewords are applied to the dual-polar codebook.

[0140] It should be noted that the embodiments disclosed herein are illustrated using codewords in the horizontal dimension as an example. In another embodiment, codewords in both the horizontal and vertical dimensions also exist. In this case, the codewords in the horizontal and vertical dimensions can be subjected to the Kronecker product to obtain new codewords, and then the above method can be used to determine mutually orthogonal codewords.

[0141] It should be noted that the order of each column vector in the embodiments of this disclosure is not limited, and the order of each column vector can also be changed.

[0142] Step S2102: The terminal sends the first information.

[0143] In some embodiments, the first information includes at least one of the angle domain quantization index, the distance domain quantization index, or the co-phase coefficient;

[0144] Among them, the angle domain quantization index is used to indicate the index when quantizing the angle domain parameters;

[0145] The distance domain quantization index is used to indicate the index when quantizing distance domain parameters;

[0146] The phase coefficients are used to construct dual-polarization codewords.

[0147] Optionally, for the above antenna spacing of And for a=1, the first information reported includes l, l′, o1, o1′, Where l = 0, 1, ..., N1O1-1 represents the horizontal dimension angle domain quantization index, and o1 = 0, 1, ..., N3O3-1 represents the horizontal dimension distance domain quantization index. These are the co-phase coefficients.

[0148] Optionally, when reporting parameter l, through Bit indicator l = 0, 1, ..., N1O1-1. When reporting parameter l′, if the layer number is 2, for example, via... Bit indicator l′ = 0, 1, ..., N1O1-1. When the layer number is 3 or 4, l′ can be calculated and does not require indication. When reporting parameter o1, it is done through... Bit indicator o1 = 0, 1, ..., N3O3-1. No indicator is needed when reporting parameter o1′. Parameter reporting At that time, the QPSK co-phase coefficient is indicated by 2 bits.

[0149] In step S2103, the network device receives the first information.

[0150] In step S2104, the network device determines at least two codewords based on the first information.

[0151] In this embodiment of the disclosure, if the network device receives the first information, it can determine at least two codewords used by the terminal indicated by the first information.

[0152] In step S2105, the terminal and the network device pre-encode and transmit data based on at least two codewords.

[0153] In this embodiment of the disclosure, if the terminal has data to be transmitted, it pre-encodes the data using codewords to obtain pre-encoded data, and then transmits the pre-encoded data. If the network device has data to be transmitted, it pre-encodes the data using codewords to obtain pre-encoded data, and then transmits the pre-encoded data.

[0154] In some embodiments, if multi-layer transmission is required, the data to be transmitted is pre-encoded using the corresponding codewords to obtain pre-encoded data, and then the pre-encoded data is transmitted.

[0155] The codeword transmission method disclosed in this embodiment may include at least one of steps S2101 to S2105. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, step S2105 may be implemented as an independent embodiment, steps S2101 and S2102 may be implemented as independent embodiments, steps S2101 and S2103 may be implemented as independent embodiments, steps S2101 and S2104 may be implemented as independent embodiments, steps S2102 and S2103 may be implemented as independent embodiments, steps S2104 and S2105 may be implemented as independent embodiments, but are not limited thereto.

[0156] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, step S2103 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, step S2104 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, step S2105 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, steps S2101 and S2102 are optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, steps S2101 and S2103 are optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, steps S2101 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, steps S2102 and S2103 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0157] In some embodiments, steps S2102 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0158] In some embodiments, steps S2103 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0159] In some embodiments, other optional implementations described before or after the specification corresponding to FIG2 may be referred to.

[0160] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0161] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0162] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0163] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0164] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0165] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0166] Figure 3A is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3A, the present disclosure relates to a codeword transmission method, which includes:

[0167] In step S3101, the terminal determines at least two mutually orthogonal codewords based on at least one of the angle domain parameters, range domain parameters, or antenna array parameters.

[0168] The optional implementation of step S3101 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0169] Step S3102: The terminal sends the first information.

[0170] In some embodiments, the first information is used to indicate at least two codewords, the at least two codewords are orthogonal to each other, the codewords are used to pre-encode data, the angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

[0171] The optional implementation of step S3102 can be found in the optional implementation of step S2102 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0172] In step S3103, the terminal and the network device pre-encode and transmit data based on at least two codewords.

[0173] The optional implementation of step S3103 can be found in the optional implementation of step S2105 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0174] The codeword transmission method disclosed in this embodiment may include at least one of steps S3101 to S3103. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and step S3103 may be implemented as an independent embodiment.

[0175] Figure 3B is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3B, the present disclosure relates to a codeword transmission method, which includes:

[0176] Step S3201: The terminal sends the first information.

[0177] In some embodiments, the first information is used to indicate at least two codewords, the at least two codewords are orthogonal to each other, the codewords are used to pre-encode data, the angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

[0178] The optional implementation of step S3201 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0179] Figure 4A is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure, applied to a network device. As shown in Figure 4A, the present disclosure relates to a codeword transmission method, which includes:

[0180] In step S4101, the network device determines at least two mutually orthogonal codewords based on at least one of the angle domain parameters, distance domain parameters, or antenna array parameters.

[0181] The optional implementation of step S4101 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0182] In step S4102, the network device receives the first information.

[0183] In some embodiments, the first information is used to indicate at least two codewords, the at least two codewords are orthogonal to each other, the codewords are used to pre-encode data, the angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

[0184] The optional implementation of step S4102 can be found in the optional implementation of step S2103 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0185] In step S4103, the network device determines at least two codewords of the indication based on the first information.

[0186] The optional implementation of step S4103 can be found in the optional implementation of step S2104 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0187] The codeword transmission method disclosed in this embodiment may include at least one of steps S4101 to S4103. For example, step S4101 may be implemented as an independent embodiment, step S4102 may be implemented as an independent embodiment, and step S4103 may be implemented as an independent embodiment.

[0188] Figure 4B is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 4B, the present disclosure relates to a codeword transmission method, which includes:

[0189] Step S4201: The network device receives the first information.

[0190] In some embodiments, the first information is used to indicate at least two codewords, the at least two codewords are orthogonal to each other, the codewords are used to pre-encode data, the angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

[0191] The optional implementation of step S4201 can be found in the optional implementation of step S2103 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0192] Figure 5 is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure, applied to a network device. As shown in Figure 5, this disclosure relates to a codeword transmission method, which includes:

[0193] Step S5101: The terminal sends the first message.

[0194] In some embodiments, the first information is used to indicate at least two codewords, the at least two codewords are orthogonal to each other, the codewords are used to pre-encode data, the angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

[0195] The optional implementation of step S5101 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0196] In step S5102, the network device receives the first information.

[0197] The optional implementation of step S5102 can be found in the optional implementation of step S2103 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0198] In some embodiments, the above methods may include the methods of the embodiments described above on the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0199] Figure 6 is a flowchart illustrating a codeword transmission method according to an embodiment of the present disclosure. As shown in Figure 6, the present disclosure relates to a codeword transmission method, which includes:

[0200] Step S6101: Determine two mutually orthogonal codewords.

[0201] Optionally, the element corresponding to the codeword in a constant-mode near-field codebook and the antenna index n is represented as follows:

[0202] Optionally, for the above codeword, the phase of the first element of the codeword can be corrected to 0 by multiplying each element of the codeword by the conjugate of the first element of the codeword.

[0203] To effectively reduce the feedback overhead of the codebook, quantization is considered to be performed separately in the angle domain and the distance domain.

[0204] ● Angle domain quantization: Uniform quantization of the cosine or sine value of an angle within a certain range.

[0205] ■ For example, uniformly quantizing cosθ in the range [-a, a] (a>0) results in...

[0206] ◆N1 represents the number of sampling points in the horizontal dimension angle domain.

[0207] ◆O1 represents the oversampling factor in the horizontal dimension angle domain.

[0208] ◆l=0,1,...,N1O1-1 represents the horizontal dimension angle domain quantization index.

[0209] ● Distance domain quantization: Uniform quantization of distance or its reciprocal within a certain range.

[0210] ■For example, exist Perform uniform quantization, that is, quantize to

[0211] ■For example, r in [r min ,r max Perform uniform quantization, that is, quantize to

[0212] ◆N3 represents the number of sampling points in the horizontal distance domain.

[0213] ◆O3 represents the oversampling factor in the horizontal distance domain.

[0214] ◆o1=0,1,...,M3O3-1 represents the horizontal dimension distance domain quantization index.

[0215] r min and r max These represent the minimum and maximum values ​​of the quantization range in the horizontal distance domain, respectively. Optionally, they can be expressed as multiples of the wavelength, such as r. min =s min λ and r max =s max λ.

[0216] Assume that the angle domain parameters and range domain parameters corresponding to the quantized codeword w1 are cosθ1 and r1, respectively, and the angle domain parameters and range domain parameters corresponding to the quantized codeword w2 are cosθ2 and r2, respectively. Then the element in codeword w1 corresponding to the position index n in the antenna array is represented as: The element in codeword w2 corresponding to the position index n in the antenna array is represented as follows: If codewords w1 and w2 are orthogonal, then... make but

[0217] like Just

[0218] Furthermore, for any n, the following equation holds, where C is a constant.

[0219] Depend on achievable And k is a positive integer (any two DFT vectors are orthogonal to each other).

[0220] Depend on If sine is constant, then sin 2 θ1r2=sin 2 θ2r1. If sin 2 θ1r2=sin 2 θ2r1 holds true for all 2, provided that r1 = r2 and cosθ1 = -cosθ2.

[0221] Optionally, the antenna spacing is And a = 1

[0222] ● When the transmission layer has 2 layers, the codeword can be designed as follows:

[0223] ■ It can be any codeword in a single-layer transmission codebook.

[0224] ■ It can be any codeword in a single-layer transmission codebook.

[0225] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0226] ● When the transmission layer has 3 layers, the codeword can be designed as follows:

[0227] ■ It can be any codeword in a single-layer transmission codebook.

[0228] ■ Is with Orthogonal character encoding must satisfy the following conditions:

[0229] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0230] ● When the transmission layer is 4, the codeword can be designed as follows:

[0231] ■ It can be any codeword in a single-layer transmission codebook.

[0232] ■ Is with Orthogonal character encoding must satisfy the following conditions:

[0233] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0234] ●The UE reports parameters l, l′, o1, o1′, and through multiple fields respectively.

[0235] ■ Reporting parameters l

[0236] ◆For example, through Bit indicator l = 0, 1, ..., N1O1-1

[0237] ■ Reporting parameter l′

[0238] ◆When the number of layers is 2, for example, through Bit indicator l′=0,1,…,N1O1-1

[0239] ◆When the number of layers is 3 or 4, l′ can be calculated without instruction.

[0240] ■ Reporting parameter o1

[0241] ◆For example, through Bit indicator o1 = 0, 1, ..., N3O3-1

[0242] ■ Reporting parameter o1′

[0243] ◆Can be obtained directly ′ ′, no instructions required

[0244] ■ Reporting parameters

[0245] ◆For example, 2 bits indicate the QPSK co-phase coefficients

[0246] Note 1: The above codeword does not include the energy normalization coefficient. Optionally, the energy normalization coefficient can be calculated based on parameters such as the number of antennas and layers.

[0247] Note 2: The order of the column vectors in the above codewords can be arbitrarily changed.

[0248] Note 3: When the BS (base station) antenna array is a UPA (Uniform Planar Array), the codewords in the horizontal and vertical dimensions can be multiplied by the Kronecker product to obtain a new codeword.

[0249] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0250] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0251] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0252] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0253] Figure 7A is a schematic diagram of the codebook determination device proposed in an embodiment of this disclosure. As shown in Figure 7A, the codebook determination device 7100 may include at least one of a transceiver module 7101 and a processing module 7102. The transceiver module 7101 is used to transmit first information, which indicates at least two codewords. The at least two codewords are orthogonal to each other. The codewords are used to pre-encode data. The angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal. Optionally, the transceiver module 7101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods (e.g., step S2101, but not limited to this), which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be described in detail here.

[0254] Optionally, the processing module 7102 is used to perform at least one of the communication steps, such as the processing performed by the terminal in any of the above methods, which will not be described in detail here.

[0255] Figure 7B is a schematic diagram of the codebook determination device proposed in an embodiment of this disclosure. As shown in Figure 7B, the codebook determination device 7200 may include at least one of a transceiver module 7201 and a processing module 7202. The transceiver module 7201 is used to receive first information, which indicates at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites of each other, and the distance domain parameters in the at least two codewords being equal. Optionally, the transceiver module 7201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods (e.g., step S2101, but not limited thereto), which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be elaborated here.

[0256] Optionally, the processing module 7202 is used to perform at least one of the communication steps, such as the processing performed by the terminal in any of the above methods, which will not be described in detail here.

[0257] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0258] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0259] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 can be a network device (e.g., access network device, core network device, etc.), a terminal, a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0260] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control codebook determination devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 8100 is used to execute any of the above methods.

[0261] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may also be located outside the communication device 8100.

[0262] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2103, S2104, but not limited thereto).

[0263] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0264] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0265] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (8) others, etc.

[0266] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0267] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0268] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to memory 8203, and the interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201.

[0269] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8201 performs at least one of the other steps.

[0270] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0271] In some embodiments, chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memories 8203 may be located outside of chip 8200.

[0272] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0273] This disclosure also provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0274] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A codeword transmission method, characterized in that, The method is executed by a terminal, and the method includes: Send a first message, which is used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites of each other, and the distance domain parameters in the at least two codewords being equal.

2. The method according to claim 1, characterized in that, The at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

3. The method according to claim 1 or 2, characterized in that, The at least two codewords are determined based on at least one of angle domain parameters, range domain parameters, or antenna array parameters.

4. The method according to any one of claims 1 to 3, characterized in that, Each codeword corresponds to one layer.

5. The method according to any one of claims 1 to 4, characterized in that, The at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters in the following vectors: At least one of the following: the product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters; the product of the square of the antenna spacing and element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter; and the wavelength.

6. The method according to any one of claims 1 to 5, characterized in that, The first information includes at least one of the following: angle domain quantization index, distance domain quantization index, or co-phase coefficient; The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters. The distance domain quantization index is used to indicate the index when quantizing distance domain parameters; The co-phase coefficients are used to construct dual-polarization codewords.

7. The method according to any one of claims 1 to 6, characterized in that, The antenna array parameters include an odd number of antenna elements.

8. A codeword transmission method, characterized in that, The method is performed by a network device, and the method includes: Receive first information, the first information being used to indicate at least two codewords, the at least two codewords being orthogonal to each other, the codewords being used to pre-encode data, the angle domain parameters in the at least two codewords being opposites to each other, and the distance domain parameters in the at least two codewords being equal.

9. The method according to claim 8, characterized in that, The at least two codewords include a first codeword and a second codeword, wherein the first product between the square of the sine parameter included in the angle domain parameter of the first codeword and the distance domain parameter of the second codeword is equal to the first product between the square of the sine parameter included in the angle domain parameter of the second codeword and the distance domain parameter of the first codeword.

10. The method according to claim 8 or 9, characterized in that, The at least two codewords are determined based on at least one of angle domain parameters, range domain parameters, or antenna array parameters.

11. The method according to any one of claims 8 to 10, characterized in that, Each codeword corresponds to one layer.

12. The method according to any one of claims 8 to 11, characterized in that, The at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters in the following vectors: At least one of the following: the product of the trigonometric function of the angle domain parameter and the antenna spacing and element position identifier in the antenna array parameters; the product of the square of the antenna spacing and element position identifier in the antenna array parameters and the square of the trigonometric function of the angle domain parameter; and the wavelength.

13. The method according to any one of claims 8 to 12, characterized in that, The first information includes at least one of the following: angle domain quantization index, distance domain quantization index, or co-phase coefficient; The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters; The distance domain quantization index is used to indicate the index when quantizing the distance domain parameters; The co-phase coefficients are used to construct dual-polarization codewords.

14. The method according to any one of claims 8 to 13, characterized in that, The antenna array parameters include an odd number of antenna elements.

15. A codeword transmission device, characterized in that, The device includes: A transceiver module is used to send first information, which is used to indicate at least two codewords. The at least two codewords are orthogonal to each other. The codewords are used to pre-encode data. The angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

16. A codeword transmission device, characterized in that, The device includes: A transceiver module is used to receive first information, which indicates at least two codewords. The at least two codewords are orthogonal to each other. The codewords are used to pre-encode data. The angle domain parameters in the at least two codewords are opposites of each other, and the distance domain parameters in the at least two codewords are equal.

17. A terminal, characterized in that, The terminal includes: One or more processors; The processor is used to execute the codeword transmission method according to any one of claims 1 to 7.

18. A network device, characterized in that, The network device includes: One or more processors; The processor is used to execute the codeword transmission method according to any one of claims 8 to 14.

19. A communication system, characterized in that, The communication system includes a terminal and a network device, wherein the network device is configured to perform the codeword transmission method as described in any one of claims 1 to 7, and the terminal is configured to perform the codeword transmission method as described in any one of claims 8 to 14.

20. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the codeword transmission method as described in any one of claims 1 to 14.

21. A computer program product, characterized in that, When the computer program product is run on a communication device, it causes the communication device to perform the codeword transmission method as described in any one of claims 1 to 14.

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