Codeword transmission method, and apparatus and storage medium

Abstract

The present disclosure relates to a codeword transmission method, and an apparatus and a storage medium. The method comprises: sending first information, wherein the first information is used for indicating at least two codewords, the at least two codewords are mutually orthogonal, the codewords are used for precoding data, the difference between angle-domain parameters in the at least two codewords is equal to a first numerical value, and the first numerical value is determined on the basis of an antenna array parameter. In the embodiments, it is possible to indicate at least two mutually orthogonal codewords, in which the difference between angle-domain parameters is equal to a first numerical value, such that the at least two mutually orthogonal codewords can precode data and transmit same, thereby ensuring the reliability of data transmission.

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-in-multiple-out (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. Electromagnetic waves in the far-field region propagate as plane waves, while those in the near-field region propagate as spherical waves.

[0003] Summary of the Invention

[0004] The scheme provided in this disclosure enables the indication of at least two mutually orthogonal codewords whose angular domain parameter difference is equal to a first value even when some antenna array elements are not activated. This allows the at least two mutually orthogonal codewords to pre-encode and transmit data, ensuring the reliability of data transmission.

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

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

[0007] Send a first message, which indicates at least two codewords that are orthogonal to each other when some antenna elements of the antenna array of the network device are not activated. The codewords are used to pre-encode data. The difference in the angle domain parameters of the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[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] The system receives first information, which indicates at least two codewords that are orthogonal to each other when some antenna elements of the antenna array of the network device are not activated. The codewords are used to pre-encode data. The difference between the angle domain parameters of the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0010] According to a third aspect of the present disclosure, a codebook determination apparatus is provided, comprising: a transceiver module for transmitting first information, the first information being used to indicate at least two codewords, the at least two codewords being mutually orthogonal when some antenna elements of an antenna array of a network device are not activated, the codewords being used to pre-encode data, and the difference in angle domain parameters in the at least two codewords being equal to a first value, the first value being determined based on antenna array parameters.

[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 mutually orthogonal when some antenna elements of an antenna array of a network device are not activated, the codewords being used to pre-encode data, and the difference in angle domain parameters in the at least two codewords being equal to a first value, the first value being determined based on antenna array parameters.

[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 first 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 described in the first 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 indicates at least two codewords that are orthogonal to each other when some antenna elements of the antenna array of the network device are not activated. The codewords are used to pre-encode data. The difference in the angle domain parameters of the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0032] In the above embodiments, at least two codewords that are mutually orthogonal and whose angle domain parameter difference is equal to a first value are implemented, so that at least two mutually orthogonal codewords can pre-encode and transmit data, ensuring the reliability of data transmission.

[0033] 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, distance domain parameters, or antenna array parameters.

[0034] In the above embodiments, at least two codewords are determined by at least one of the angle domain parameters, distance domain parameters, or antenna array parameters to ensure the accuracy of the determined codewords, thereby ensuring the accuracy of subsequent precoding based on the codewords.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, the antenna array parameters include antenna spacing, which refers to the interval between adjacent array elements in the antenna array, and the first value is determined based on the ratio between the wavelength and the antenna spacing.

[0036] In the above embodiments, a first value is determined based on the wavelength and antenna spacing to ensure the accuracy of the determined value, thereby ensuring the accuracy of the determined codeword.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the first value refers to the product of the ratio between the wavelength and the antenna spacing and the second value, the second value being determined based on a first parameter and a second parameter, wherein the first parameter is an integer and the second parameter is the position of the antenna element in the antenna array.

[0038] In the above embodiments, the method for determining the first value is further indicated to ensure the reliability of the method for determining the first value, thereby ensuring the accuracy of the determined first value, and subsequently ensuring the accuracy of the determined codeword.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the second parameter indicates the location of other antenna elements besides the inactive antenna elements in the antenna array.

[0040] In the above embodiments, the accuracy of the antenna array elements indicated by the second parameter is ensured by indicating the antenna array elements that have not yet been activated and the activated antenna array elements, thereby ensuring the accuracy of the determined mutually orthogonal codewords.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the second parameter is greater than or equal to 0.5x, where x is associated with the number of the inactive antenna elements.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the number of antenna elements included in the antenna array is even.

[0043] In the above embodiments, when the number of antenna array elements is even, the second parameter is guaranteed to be 0.5x, thus ensuring the accuracy of the second parameter and consequently the accuracy of the subsequently determined codeword.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the second parameter is greater than or equal to y, where y is associated with the number of the inactive antenna elements.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, the antenna array includes an odd number of antenna elements.

[0046] In the above embodiments, when the number of antenna array elements is odd, the second parameter is guaranteed to be y, thus ensuring the accuracy of the second parameter and consequently the accuracy of the subsequently determined codeword.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, each codeword corresponds to a layer.

[0048] 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:

[0049] 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.

[0050] In the above embodiments, the form of the codeword is extended to ensure the accuracy of the determined codeword, thereby ensuring the reliability of subsequent precoding based on the codeword.

[0051] 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;

[0052] The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters.

[0053] The distance domain quantization index is used to indicate the index when quantizing distance domain parameters;

[0054] The co-phase coefficients are used to construct dual-polarization codewords.

[0055] Secondly, this disclosure provides a codeword transmission method, which is executed by a network device, and the method includes:

[0056] The system receives first information, which indicates at least two codewords that are orthogonal to each other when some antenna elements of the antenna array of the network device are not activated. The codewords are used to pre-encode data. The difference between the angle domain parameters of the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0057] 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, distance domain parameters, or antenna array parameters.

[0058] In conjunction with some embodiments of the second aspect, in some embodiments, the antenna array parameters include the antenna spacing, which refers to the interval between adjacent array elements in the antenna array, and the first value is determined based on the ratio between the wavelength and the antenna spacing.

[0059] In conjunction with some embodiments of the second aspect, in some embodiments, the first value refers to the product of the ratio between the wavelength and the antenna spacing and the second value, the second value being determined based on a first parameter and a second parameter, the first parameter being an integer and the second parameter being the position of the antenna element in the antenna array.

[0060] In conjunction with some embodiments of the second aspect, in some embodiments, the second parameter indicates the position of other antenna elements besides the inactive antenna elements in the antenna array.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments, the second parameter is greater than or equal to 0.5x, where x is associated with the number of the inactive antenna elements.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the number of antenna elements included in the antenna array is even.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the second parameter is greater than or equal to y, where y is associated with the number of the inactive antenna elements.

[0064] In conjunction with some embodiments of the second aspect, in some embodiments, the antenna array includes an odd number of antenna elements.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, each codeword corresponds to a layer.

[0066] 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:

[0067] 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.

[0068] 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;

[0069] The angle domain quantization index is used to indicate the index when quantizing the angle domain parameters.

[0070] The distance domain quantization index is used to indicate the index when quantizing distance domain parameters;

[0071] The co-phase coefficients are used to construct dual-polarization codewords.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] In a seventh aspect, embodiments of this disclosure provide a storage medium storing first information, which, when the first information is executed on a communication device, causes the communication device to perform the method as described in any one of the first aspects.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] In the embodiments disclosed herein, "multiple" refers to two or more.

[0087] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0092] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0093] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0094] 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”.

[0095] 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.

[0096] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0097] 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)."

[0098] 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.

[0099] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0100] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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).

[0109] 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.

[0110] 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.

[0111] 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).

[0112] 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:

[0113] In step S2101, the terminal and the 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, when some antenna elements included in the antenna array of the network device are not activated.

[0114] 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.

[0115] In some embodiments, "some antenna elements inactive" in the antenna array of a network device means that some antenna elements in the antenna array of the network device are not activated, or it can also be understood as some antenna elements not being used. For example, the antenna array of a network device includes five antenna elements: antenna element 1, antenna element 2, antenna element 3, antenna element 4, and antenna element 5. Antenna element 3 is not activated, or it could be that antenna elements 2, 3, and 4 are not activated.

[0116] Optionally, the antenna array parameters include at least one of the following:

[0117] (1) Number of antenna ports in the horizontal dimension.

[0118] (2) Number of antenna ports in the vertical dimension.

[0119] (3) Antenna spacing in the horizontal dimension.

[0120] (4) Vertical dimension antenna spacing.

[0121] 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.

[0122] 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.

[0123] Optionally, the codewords in this embodiment belong to a codebook, which includes multiple codewords. This embodiment does not limit the scope of the codewords.

[0124] In some embodiments, the difference in the angle domain parameters of at least two codewords is equal to a first value, which is determined based on antenna array parameters. Optionally, the first value refers to a value that ensures at least two codewords are orthogonal when some antenna elements of the network device's antenna array are inactive. Optionally, the angle domain parameter refers to a trigonometric function value of an angle. For example, the trigonometric function value is at least one of a cosine function value and a sine function value.

[0125] For example, if the angle domain parameter is a cosine function value, then the difference between the angle domain parameters in at least two codewords refers to the difference between the cosine function values ​​in at least two codewords. Optionally, if the at least two codewords include a first codeword and a second codeword, then the difference between the angle domain parameters in at least two codewords refers to the difference between the cosine function value of the first codeword and the cosine function value of the second codeword.

[0126] In some embodiments, the antenna array parameters include the antenna spacing, which refers to the interval between adjacent elements in the antenna array. The first value is determined based on the ratio between the wavelength and the antenna spacing. Optionally, the antenna spacing includes the antenna spacing in the horizontal dimension or the antenna spacing in the vertical dimension. Optionally, the wavelength refers to the wavelength of the signal. In embodiments of this disclosure, the first value is determined by the ratio between the wavelength and the antenna spacing. For example, if the wavelength is represented by λ and the antenna spacing is represented by d, then the first value is determined based on λ / d. As another example, if in at least two codewords, the angle domain parameter of the first codeword is cosθ1 and the angle domain parameter of the second codeword is cosθ2, then the first value cosθ1-cosθ2 is determined based on λ / d.

[0127] In some embodiments, the first value refers to the product of the ratio between the wavelength and the antenna spacing and the second value. The second value is determined based on the first parameter and the second parameter, where the first parameter is an integer and the second parameter is the position of the antenna element in the antenna array. For example, the first parameter can be -1, 0, 1, or other values, which are not limited in this embodiment. For example, if the wavelength is represented by λ, the antenna spacing by d, the first parameter by k, the second parameter by n, the angular domain parameter of the first codeword is cosθ1, and the angular domain parameter of the second codeword is cosθ2, then...

[0128] 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 a single-layer codeword; therefore, determining at least two mutually orthogonal codewords can also be understood as two mutually orthogonal layers.

[0129] In some embodiments, at least two codewords are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters.

[0130] 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:

[0131] 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:

[0132] 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.

[0133] 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.

[0134] Optionally, the element in a codeword corresponding to the position identifier n of an element in the antenna array can be represented as:

[0135] Where λ represents wavelength, d represents antenna spacing, r represents distance, and θ is 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.

[0136] 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.

[0137] 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 in the horizontal dimension angle domain.

[0138] 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 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 .

[0139] The following explains how to determine at least two mutually orthogonal codewords.

[0140] 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

[0141] Without loss of generality, assuming n>0, we can obtain the following from Euler's formula:

[0142] like Just W n +W -n =0, therefore we can let achievable Where k is an integer, we can further obtain

[0143] In some embodiments, the second parameter indicates the location of antenna elements other than inactive antenna elements in the antenna array. Alternatively, it can be understood as indicating the location of active antenna elements in the antenna array. In some embodiments, the antenna array includes inactive and active antenna elements, and the second parameter indicates the location of antenna elements other than inactive antenna elements in the antenna array, or it can indicate the location of inactive antenna elements in the antenna array. Alternatively, it can be understood as indicating the location of active antenna elements in the antenna array.

[0144] In some embodiments, the antenna array in this disclosure includes both an even number and an odd number of antenna elements. The different numbers are described below.

[0145] In some embodiments, the number of antenna elements included in the antenna array is even.

[0146] In some embodiments, the second parameter is greater than or equal to 0.5x, where x is associated with the number of inactive antenna elements. Optionally, the second parameter is n. For example, when x is 1, the second parameter is 0.5; when x is -1, the second parameter is -0.5. Or, when x is 1, the second parameter is 0.5; when x is -1, the second parameter is -0.5; when x is 3, the second parameter is 1.5; when x is -3, the second parameter is -1.5.

[0147] Optionally, if the two middle antenna elements in the antenna array are not activated, that is... The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal. For example, when the antenna spacing is At this time, it is sufficient that k = -3, -2, -1, 0, 1, 2, that is...

[0148] Optionally, if the four antenna elements located in the middle of the antenna array are not activated, i.e. The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal. For example, when the antenna spacing is At this time, it is sufficient that k = -5, -4 -3, -2, -1, 0, 1, 2, 3, 4, that is...

[0149] Optionally, when the m antennas in the middle of the antenna array are not activated, i.e. The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal.

[0150] In some embodiments, the antenna spacing is d = λ / 2 and a = 1, and the two antennas in the middle of the antenna array are not activated as an example.

[0151] Optionally, when the transmission layer has two 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. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients... It should be noted that the codewords in the above embodiments can be applied to dual-polar codebooks.

[0152] 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: And l′=0,1,…,N1O1-1. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients... It should be noted that the codewords in the above embodiments can be applied to dual-polar codebooks.

[0153] 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 character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients... It should be noted that the codewords in the above embodiments can be applied to dual-polar codebooks.

[0154] In some embodiments, the antenna array includes an odd number of antenna elements.

[0155] In some embodiments, the second parameter is greater than or equal to y, where y is associated with the number of inactive antenna elements. Optionally, the second parameter is n. For example, when y is 1, the second parameter is 1; when y is -1, the second parameter is -1. Or, when y is 1, the second parameter is 1; when y is -1, the second parameter is -1; when y is 2, the second parameter is 2; when y is -2, the second parameter is -2.

[0156] Optionally, when the central element of the antenna array is not activated, the condition only needs to be satisfied when n=1. In this case, the condition always holds true when n>1. Therefore, the condition that codewords w1 and w2 are mutually orthogonal is:

[0157] For example, when the antenna spacing is At this time, it is sufficient that k = -2, -1, 0, 1, that is...

[0158] For example, when the antenna spacing is When k = -1, 0, then we only need cosθ1 - cosθ2 = ±1.

[0159] Optionally, when the three center elements of the antenna array are not activated, the condition only needs to be satisfied when n=2. In this case, the condition always holds true when n>2. Therefore, the condition that codewords w1 and w2 are mutually orthogonal is:

[0160] For example, when the antenna spacing is At this time, it is sufficient that k = -4, -3, -2, -1, 0, 1, 2, 3, that is...

[0161] Optionally, when the m elements at the very center of the antenna array are not activated, it is only necessary to As long as the conditions are met, at this time The condition that codewords w1 and w2 are mutually orthogonal is always true.

[0162] In some embodiments, the antenna spacing is d = λ / 2 and a = 1, and the example is that one antenna in the middle of the antenna array is not activated.

[0163] Optionally, when the transmission layer has two 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. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0164] 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: And l′=0,1,…,N1O1-1. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0165] 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 character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1. The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0166] 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.

[0167] 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.

[0168] Step S2102: The terminal sends the first information.

[0169] 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;

[0170] Among them, the angle domain quantization index is used to indicate the index when quantizing the angle domain parameters;

[0171] The distance domain quantization index is used to indicate the index when quantizing distance domain parameters;

[0172] The phase coefficients are used to construct dual-polarization codewords.

[0173] Optionally, for the above antenna array, the number of antenna elements is even, and the antenna spacing is... And for a=1, the first information reported includes l, l′, o1, o ′1 ′1、 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.

[0174] 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, for example, l′ is indicated by 2 bits because... Equivalent to When reporting parameter o1, via Bit indicator o1 = 0, 1, ..., N3O3-1. When reporting parameter o1′, it is done through... Bit indicator o1′1 = 0, 1, ..., N3O3-1. Reported parameters. At that time, the QPSK co-phase coefficient is indicated by 2 bits.

[0175] Optionally, for the above antenna array, the number of antenna elements is odd, and the antenna spacing is... 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.

[0176] 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 number of layers 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. When reporting parameter o1′, it is done through... Bit indicator o1′ = 0, 1, ..., N3O3-1. Reported parameters. At that time, the QPSK co-phase coefficient is indicated by 2 bits.

[0177] In step S2103, the network device receives the first information.

[0178] In step S2104, the network device determines at least two codewords based on the first information.

[0179] 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.

[0180] In step S2105, the terminal and the network device pre-encode and transmit data based on at least two codewords.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] In some embodiments, steps S2102 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0186] In some embodiments, steps S2103 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0187] In some embodiments, other optional implementations described before or after the specification corresponding to FIG2 may be referred to.

[0188] 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.

[0189] 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".

[0190] 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.

[0191] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0192] 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.”

[0193] 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.

[0194] 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:

[0195] In step S3101, the terminal determines at least two mutually orthogonal codewords based on at least one of angle domain parameters, distance domain parameters, or antenna array parameters, when some antenna elements included in the antenna array of the network device are not activated.

[0196] 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.

[0197] Step S3102: The terminal sends the first information.

[0198] In some embodiments, the first information is used to indicate at least two codewords, which are orthogonal to each other, and the codewords are used to pre-encode data. The difference between the angle domain parameters in the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0199] 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.

[0200] In step S3103, the terminal and the network device pre-encode and transmit data based on at least two codewords.

[0201] 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.

[0202] 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.

[0203] 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:

[0204] Step S3201: The terminal sends the first information.

[0205] In some embodiments, the first information is used to indicate at least two codewords, which are orthogonal to each other, and the codewords are used to pre-encode data. The difference between the angle domain parameters in the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0206] 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.

[0207] 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:

[0208] In step S4101, the network device determines at least two mutually orthogonal codewords based on at least one of angle domain parameters, distance domain parameters, or antenna array parameters, when some antenna elements in the antenna array of the network device are not activated.

[0209] 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.

[0210] In step S4102, the network device receives the first information.

[0211] 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.

[0212] In step S4103, the network device determines at least two codewords to be indicated based on the first information.

[0213] 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.

[0214] 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.

[0215] 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:

[0216] Step S4201: The network device receives the first information.

[0217] In some embodiments, the first information is used to indicate at least two codewords, which are orthogonal to each other, and the codewords are used to pre-encode data. The difference between the angle domain parameters in the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0218] 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.

[0219] 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:

[0220] Step S5101: The terminal sends the first information.

[0221] In some embodiments, the first information is used to indicate at least two codewords, which are orthogonal to each other, and the codewords are used to pre-encode data. The difference between the angle domain parameters in the at least two codewords is equal to a first value, which is determined based on the antenna array parameters.

[0222] 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.

[0223] In step S5102, the network device receives the first information.

[0224] 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.

[0225] 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.

[0226] 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:

[0227] Step S6101: When some antenna array elements are not activated, determine two mutually orthogonal codewords.

[0228] Optionally, the element in a codeword corresponding to the position identifier n of an element in the antenna array can be represented as:

[0229] 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.

[0230] To effectively reduce the feedback overhead of the codebook, quantization is considered to be performed separately in the angle domain and the distance domain.

[0231] ● Angle domain quantization: Uniform quantization of the cosine or sine value of an angle within a certain range.

[0232] ■ For example, uniformly quantizing cosθ in the range [-a, a] (a>0) results in...

[0233] ◆N1 represents the number of sampling points in the horizontal dimension angle domain.

[0234] ◆O1 represents the oversampling factor in the horizontal dimension angle domain.

[0235] ◆l=0,1,…,N1O1-1 represents the horizontal dimension angle domain quantization index.

[0236] ● Distance domain quantization: Uniform quantization of distance or its reciprocal within a certain range.

[0237] ■For example, exist Perform uniform quantization, that is, quantize to

[0238] ■For example, r in [r min ,r max Perform uniform quantization, that is, quantize to

[0239] ◆N3 represents the number of sampling points in the horizontal distance domain.

[0240] ◆O3 represents the oversampling factor in the horizontal distance domain.

[0241] ◆o1=0,1,…,N3O3-1 represents the horizontal dimension distance domain quantization index.

[0242] ◆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

[0243] In some embodiments, it is assumed 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 identifier n of the array element in the antenna array is represented as follows: 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

[0244] Without loss of generality, assuming n>0, we can obtain the following from Euler's formula:

[0245] like Just W n +W -n =0, therefore we can let achievable Where k is an integer, we can further obtain

[0246] The number of BS antenna array elements N1 is an even number

[0247] Assume that the angle domain parameters and distance domain parameters of the quantized codeword w1 are cosθ1 and r1, respectively, and the angle domain parameters and distance domain parameters of the quantized codeword w2 are cosθ2 and r2, respectively. Then the nth element of codeword w1 is represented as... The nth element of codeword w2 is represented as If codewords w1 and w2 are orthogonal, then... make but

[0248] Without loss of generality, assuming n>0, we can obtain the following from Euler's formula:

[0249] like Just W n +W -n =0, therefore we can let achievable Where k is an integer, we can further obtain

[0250] Just As long as the conditions are met, at this time The condition that codewords w1 and w2 are mutually orthogonal is always true.

[0251] To obtain more optional orthogonal vectors, consider increasing the range of values ​​for cosθ1-cosθ2, thereby achieving better precoding performance. One feasible method is to deactivate some antennas in the middle of the antenna array, resulting in a non-constant modulus codebook.

[0252] ●For example, when the two antennas in the middle of the antenna array are not activated, i.e. The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal.

[0253] ■For example, when the antenna spacing is At this time, it is sufficient that k = -3, -2, -1, 0, 1, 2, that is...

[0254] ●For example, when the four antennas in the middle of the antenna array are not activated, i.e. The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal.

[0255] ■For example, when the antenna spacing is At this time, it is sufficient that k = -5, -4 -3, -2, -1, 0, 1, 2, 3, 4, that is...

[0256] ●For example, when the m antennas in the middle of the antenna array are not activated, i.e. The antenna is not activated, only The condition is met when the codewords w1 and w2 are mutually orthogonal.

[0257] Example: Antenna spacing is And when a = 1, the two antennas in the middle of the antenna array are not activated.

[0258] ● When the transmission layer has 2 layers, the codeword can be designed as follows:

[0259] ■ It can be any codeword in a single-layer transmission codebook.

[0260] ■ It can be any codeword in a single-layer transmission codebook.

[0261] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0262] ● When the transmission layer has 3 layers, the codeword can be designed as follows:

[0263] ■ It can be any codeword in a single-layer transmission codebook.

[0264] ■ Is with Orthogonal character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1

[0265] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0266] ● When the transmission layer is 4, the codeword can be designed as follows:

[0267] ■ It can be any codeword in a single-layer transmission codebook.

[0268] ■ Is with Orthogonal character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1

[0269] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0270] ●The UE reports parameters l, l′, o1, o1′, and through multiple fields respectively.

[0271] ■ Reporting parameters l

[0272] ◆For example, through Bit indicator l = 0, 1, ..., N1O1-1

[0273] ■ Reporting parameter l′

[0274] ◆When the number of layers is 2, for example, through Bit indicator l′=0,1,…,N1O1-1

[0275] ■ When the number of layers is 3 or 4, for example, l′ is indicated by 2 bits, because Equivalent to

[0276] ■ Reporting parameter o1

[0277] ◆For example, through Bit indicator o1 = 0, 1, ..., N3O3-1

[0278] ■ Reporting parameter o1′

[0279] ◆For example, through Bit indication o ′1 ′1=0,1,...,N3O3-1

[0280] ■ Reporting parameters

[0281] ◆For example, 2 bits indicate the QPSK co-phase coefficients

[0282] The number of elements N1 in the BS antenna array is odd.

[0283] Assume that the angle domain parameters and distance domain parameters of the quantized codeword w1 are cosθ1 and r1, respectively, and the angle domain parameters and distance domain parameters of the quantized codeword w2 are cosθ2 and r2, respectively. Then the nth element of codeword w1 is represented as... The nth element of codeword w2 is represented as If codewords w1 and w2 are orthogonal, then... make but

[0284] When the central element of the antenna array is not activated, that is, W0 = 0.

[0285] Without loss of generality, assuming n>0, we can obtain the following from Euler's formula:

[0286] like Just W n +W -n =0, therefore we can let achievable Where k is an integer, we can further obtain

[0287] When the central element of the antenna array is not activated, the condition only needs to be satisfied when n=1. In this case, the condition always holds true when n>1. Therefore, the condition that codewords w1 and w2 are mutually orthogonal is:

[0288] For example, when the antenna spacing is At this time, it is sufficient that k = -2, -1, 0, 1, that is...

[0289] For example, when the antenna spacing is When k = -1, 0, then we only need cosθ1 - cosθ2 = ±1.

[0290] When the three center elements of the antenna array are not activated, the condition only needs to be satisfied when n=2. In this case, the condition always holds true when n>2. Therefore, the condition that codewords w1 and w2 are mutually orthogonal is:

[0291] For example, when the antenna spacing is At this time, it is sufficient that k = -4, -3, -2, -1, 0, 1, 2, 3, that is...

[0292] When the m elements at the very center of the antenna array are not activated, only As long as the conditions are met, at this time The condition that codewords w1 and w2 are mutually orthogonal is always true.

[0293] Example: Antenna spacing is And when a = 1, one antenna in the middle of the antenna array is not activated.

[0294] ● When the transmission layer has 2 layers, the codeword can be designed as follows:

[0295] ■ It can be any codeword in a single-layer transmission codebook.

[0296] ■ It can be any codeword in a single-layer transmission codebook.

[0297] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0298] ● When the transmission layer has 3 layers, the codeword can be designed as follows:

[0299] ■ It can be any codeword in a single-layer transmission codebook.

[0300] ■ Is with Orthogonal character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1

[0301] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0302] ● When the transmission layer is 4, the codeword can be designed as follows:

[0303] ■ It can be any codeword in a single-layer transmission codebook.

[0304] ■ Is with Orthogonal character encoding must satisfy the following conditions: And l′=0,1,…,N1O1-1

[0305] ■ The co-phase coefficient can be BPSK, QPSK, or 8PSK, for example, when using QPSK co-phase coefficients...

[0306] ●The UE reports parameters l, l′, o1, o1′, and through multiple fields respectively.

[0307] ■ Reporting parameters l

[0308] ◆For example, through Bit indicator l = 0, 1, ..., N1O1-1

[0309] ■ Reporting parameter l′

[0310] ◆When the number of layers is 2, for example, through Bit indicator l′=0,1,…,N1O1-1

[0311] ◆When the number of layers is 3 or 4, l′ can be calculated without instruction.

[0312] ■ Reporting parameter o1

[0313] ◆For example, through Bit indicator o1 = 0, 1, ..., N3O3-1

[0314] ■ Reporting parameter o′1

[0315] ◆For example, through Bit indicator o′1 = 0, 1, ..., N3O3-1

[0316] ■ Reporting parameters

[0317] ◆For example, 2 bits indicate the QPSK co-phase coefficients

[0318] 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.

[0319] 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.

[0320] 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.

[0321] 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).

[0322] 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 generate 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, and the difference in the angle domain parameters of the at least two codewords being equal to a first value, the first value being determined based on the antenna array parameters. 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 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.

[0323] 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.

[0324] 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, and the difference in the angle domain parameters of the at least two codewords being equal to a first value, the first value being determined based on the antenna array parameters. 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.

[0325] 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.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] 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).

[0332] 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.

[0333] 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.

[0334] 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.

[0335] 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.

[0336] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0337] 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.

[0338] 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.

[0339] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0340] 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.

[0341] 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.

[0342] 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.

[0343] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

A code word transmission method characterized by comprising: The method is performed by a terminal, and the method comprises: sending first information, the first information being used for indicating at least two code words, the at least two code words being mutually orthogonal in the case that part of antenna elements included in an antenna array of a network device are not activated, the code words being used for precoding data, a difference value of angle domain parameters in the at least two code words being equal to a first value, the first value being determined based on an antenna array parameter. The method of claim 1, wherein The at least two code words are determined based on at least one of the angle domain parameters, distance domain parameters or the antenna array parameter. The method according to claim 1 or 2, characterized in that The antenna array parameter comprises an antenna spacing, the antenna spacing being an interval between adjacent antenna elements in the antenna array, and the first value is determined based on a ratio between a wavelength and the antenna spacing. The method according to claim 3, characterized in that The first value is a product between the ratio between the wavelength and the antenna spacing and a second value, the second value being determined based on a first parameter and a second parameter, the first parameter being an integer, and the second parameter being a position of an antenna element in the antenna array. The method according to claim 4, characterized in that The second parameter indicates a position of an antenna element other than the antenna element not activated in the antenna array. The method according to claim 5, characterized in that The second parameter is greater than or equal to 0.5x, x being associated with a number of the antenna elements not activated. The method according to claim 5 or 6, characterized in that The number of the antenna elements included in the antenna array is even. The method according to claim 5, characterized in that The second parameter is greater than or equal to y, y being associated with the number of the antenna elements not activated. The method according to claim 5 or 8, characterized in that The number of the antenna elements included in the antenna array is odd. The method according to any one of claims 1 to 9, characterized in that Each of the code words corresponds to one layer. The method according to any one of claims 1 to 10, characterized in that The at least two code words are obtained by quantizing at least one of the angle domain parameters or the distance domain parameters in the following vector: at least one of a product of a trigonometric function of the angle domain parameter and an antenna spacing and an antenna element position identifier in the antenna array parameter, a square of the product of the antenna spacing and the antenna element position identifier, and a square of the trigonometric function of the angle domain parameter, and a wavelength. The method according to any one of claims 1 to 11, characterized in that The first information comprises at least one of an angle domain quantization index, a distance domain quantization index or a co-phase coefficient; The angle domain quantization index is used for indicating an index when the angle domain parameter is quantized. The distance domain quantization index is used for indicating an index when the distance domain parameter is quantized. The co-phase coefficient is used for constituting a dual-polarized code word. A code word transmission method characterized by comprising: The method is performed by a network device, and the method comprises: receiving first information, the first information being used for indicating at least two code words, the at least two code words being mutually orthogonal in the case that part of antenna elements included in an antenna array of a network device are not activated, the code words being used for precoding data, a difference value of angle domain parameters in the at least two code words being equal to a first value, the first value being determined based on an antenna array parameter. The method of claim 13, wherein The at least two code words are determined based on at least one of the angle domain parameters, distance domain parameters or the antenna array parameter. The method according to claim 13 or 14, characterized in that The antenna array parameter comprises an antenna spacing, the antenna spacing being an interval between adjacent antenna elements in the antenna array, and the first value is determined based on a ratio between a wavelength and the antenna spacing. ​ The method of claim 15, wherein The first value is a product of a ratio between the wavelength and the antenna spacing and a second value, the second value being determined based on a first parameter and a second parameter, the first parameter being an integer, and the second parameter being a position of an antenna element in the antenna array. The method of claim 16, wherein The second parameter indicates the position of the antenna elements other than the inactive antenna elements in the antenna array. The method of claim 17, wherein The second parameter is greater than or equal to 0.5x, x being associated with the number of the inactive antenna elements. The method according to claim 17 or 18, characterized in that The number of the antenna elements included in the antenna array is even. The method of claim 17, wherein The second parameter is greater than or equal to y, y being associated with the number of the inactive antenna elements. The method according to claim 17 or 20, characterized in that The number of the antenna elements included in the antenna array is odd. The method according to any one of claims 13 to 21, characterized in that Each of the code words corresponds to one layer. The method according to any one of claims 13 to 22, characterized in that The at least two code words are obtained by quantizing at least one of the angle domain parameter or the distance domain parameter in the following vector: At least one of a trigonometric function of the angle domain parameter, a product of the antenna spacing and the element position identifier in the antenna array parameter, a square of the antenna spacing and the element position identifier in the antenna array parameter, and a square of the trigonometric function of the angle domain parameter, and the wavelength. The method according to any one of claims 13 to 23, characterized in that The first information includes at least one of an angle domain quantization index, a distance domain quantization index, or a co-phase coefficient; The angle domain quantization index is used to indicate an index when the angle domain parameter is quantized. The distance domain quantization index is used to indicate an index when the distance domain parameter is quantized. The co-phase coefficient is used to constitute a dual-polarized code word. An apparatus for transmitting a codeword, the apparatus comprising: The apparatus includes: A transceiver configured to transmit first information, the first information being used to indicate at least two code words, the at least two code words being orthogonal to each other in a case where part of antenna elements included in an antenna array of a network device are inactive, the code words being used to precode data, and a difference between angle domain parameters in the at least two code words being equal to a first value, the first value being determined based on an antenna array parameter. An apparatus for transmitting a codeword, the apparatus comprising: The apparatus includes: A transceiver configured to receive first information, the first information being used to indicate at least two code words, the at least two code words being orthogonal to each other in a case where part of antenna elements included in an antenna array of a network device are inactive, the code words being used to precode data, and a difference between angle domain parameters in the at least two code words being equal to a first value, the first value being determined based on an antenna array parameter. A terminal, characterized by comprising: The terminal includes: One or more processors; The processor is configured to perform the code word transmission method in any one of claims 1 to 12. A network device, characterized in that The network device includes: One or more processors; The processor is configured to perform the code word transmission method in any one of claims 13 to 24. A communication system characterized by The communication system includes a terminal and a network device, wherein the terminal is configured to perform the code word transmission method in any one of claims 1 to 12, and the network device is configured to perform the code word transmission method in any one of claims 13 to 24. A storage medium storing instructions, the instructions comprising: The instructions, when executed on a communication device, cause the communication device to perform the code word transmission method in any one of claims 1 to 24. A computer program product, characterized in that The computer program product, when run on a communication device, causes the communication device to perform the codeword transmission method of any of claims 1 to 24.

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