WO2024000179A1 - Method for determining antenna fully-coherent transmission codeword of uplink mimo transmission, and apparatus - Google Patents

Abstract

Disclosed in embodiments of the present application are a method for determining an antenna fully-coherent transmission codeword of uplink MIMO transmission, and an apparatus, which can be applied to a communication system. The method comprises: determining candidate codewords of antenna fully-coherent transmission of 4Tx or 2Tx for uplink MIMO transmission; and on the basis of the candidate codewords, determining a first codeword of antenna fully-coherent transmission of L layers of 8Tx for uplink MIMO transmission, wherein L is a positive integer, and is less than or equal to 8. According to the embodiments of the present application, an antenna fully-coherent transmission codeword of a high dimension 8Tx can be constructed on the basis of a low-dimensional antenna fully-coherent transmission codeword, so that uplink MIMO supports the requirement of 1-8 layers of transmission of 8Tx, and the uplink MIMO technology is further enhanced.

Description

A method and device for determining antenna fully coherent transmission codewords for uplink MIMO transmission Technical field

The present application relates to the field of communication technology, and in particular to a method and device for determining antenna fully coherent transmission codewords for uplink MIMO transmission.

Background technique

Precoding technology in Multiple Input Multiple Output (MIMO) systems can effectively reduce interference and system overhead, and improve system capacity. It is an extremely important key technology in MIMO systems. In MIMO systems based on codebook transmission, Codebook design is also an important part of precoding technology. The maximum number of antenna ports supported by the fully coherent transmission codeword of the existing uplink MIMO transmission antenna is 4, that is, the fully coherent transmission codeword of the existing uplink MIMO antenna only supports transmission of a maximum of 4 transmit antenna ports (Tx) and a maximum of 4 layers. When the transmit antenna port (Tx) for uplink MIMO transmission is enhanced, for example, to 8 transmit antenna ports (8Tx), the transmission requirements of the enhanced antenna ports cannot be met at this time.

Contents of the invention

The embodiments of this application provide a method and device for determining antenna fully coherent transmission codewords for uplink MIMO transmission. Based on low-dimensional antenna fully coherent transmission codewords, high-dimensional 8Tx antenna fully coherent transmission codewords are constructed, which can enable uplink MIMO supports the transmission requirements of layer 1 to layer 8 of 8Tx, further enhancing the uplink MIMO technology.

In a first aspect, embodiments of the present application provide a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission. The method includes:

Determine the candidate codewords for antenna fully coherent transmission of 4Tx or 2Tx for uplink MIMO transmission;

Based on the candidate codewords, determine the first codeword for antenna fully coherent transmission of the 8Tx L layer of the uplink MIMO transmission, where L is less than or equal to 8.

In the embodiment of the present application, candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx for uplink MIMO transmission are determined, and based on the 4Tx or 2Tx candidate codewords, the first codeword for fully coherent antenna transmission of the 8TxL layer is determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

In a second aspect, embodiments of the present application provide a communication device that has some or all of the functions of the terminal device in implementing the method described in the first aspect. For example, the functions of the communication device may have some or all of the functions in this application. The functions in the embodiments may also be used to independently implement any of the embodiments in this application. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module coupled to the transceiver module and the processing module, which stores computer programs and data necessary for the communication device.

In a third aspect, embodiments of the present application provide a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the first aspect.

In a fourth aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.

In a fifth aspect, embodiments of the present application provide a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the first aspect.

In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal device. When the instructions are executed, the terminal device is caused to perform the method described in the first aspect. .

In a seventh aspect, the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the first aspect.

In an eighth aspect, the present application provides a chip system, which includes at least one processor and an interface for supporting the terminal device to implement the functions involved in the first aspect, for example, determining or processing the data involved in the above method and at least one of the information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a ninth aspect, the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect.

Description of drawings

In order to more clearly explain the technical solutions in the embodiments of the present application or the background technology, the drawings required to be used in the embodiments or the background technology of the present application will be described below.

Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 3 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 4 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 5 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 7 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 8 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of another method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application;

Figure 10 is a schematic flowchart of a codeword-based uplink transmission method provided by an embodiment of the present application;

Figure 11 is a schematic flowchart of another codeword-based uplink transmission method provided by an embodiment of the present application;

Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining". For the purposes of brevity and ease of understanding, this article is characterizing When referring to a size relationship, the terms used are "greater than" or "less than", "higher than" or "lower than". But for those skilled in the art, it can be understood that: the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to". "The meaning of "less than" also covers the meaning of "less than or equal to".

To facilitate understanding, the terminology involved in this application is first introduced.

The Physical Uplink Shared Channel (PUSCH) is used to carry data from the transmission channel PUSCH.

Coherent transmission is defined as a UE capability. The UE's coherent transmission capabilities include:

Full Coherence transmission: All antenna ports can transmit coherently.

Partial Coherence transmission: Antenna ports in the same coherent transmission group can transmit coherently, while antenna ports in different coherent transmission groups cannot transmit coherently. Each coherent transmission group includes at least two antenna ports.

Non-coherence transmission: No antenna port can transmit coherently.

Through the method for determining fully coherent antenna transmission codewords for uplink MIMO transmission disclosed in the embodiments of the present application, the fully coherent antenna transmission codewords applicable to the communication system are determined. The communication systems applicable to the embodiments of the present application are first described below.

Please refer to Figure 1. Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application. The communication system may include but is not limited to one network device and one terminal device. The number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more devices may be included. Network equipment, two or more terminal devices. The communication system shown in Figure 1 includes a network device 101 and a terminal device 102 as an example.

It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems. It should also be noted that the side link in the embodiment of the present application may also be called a side link or a through link.

The network device 101 in the embodiment of this application is an entity on the network side that is used to transmit or receive signals. For example, the network device 101 can be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other base stations in future mobile communication systems. Or access nodes in wireless fidelity (WiFi) systems, etc. The embodiments of this application do not limit the specific technologies and specific equipment forms used by network equipment. The network equipment provided by the embodiments of this application may be composed of a centralized unit (central unit, CU) and a distributed unit (DU). The CU may also be called a control unit (control unit). CU-DU is used. The structure can separate the protocol layers of network equipment, such as base stations, and place some protocol layer functions under centralized control on the CU. The remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of this application is an entity on the user side that is used to receive or transmit signals, such as a mobile phone. Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc. The terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.

In side-link communication, there are 4 side-link transmission modes. Side link transmission mode 1 and side link transmission mode 2 are used for terminal device direct (device-to-device, D2D) communication. Side-link transmission mode 3 and side-link transmission mode 4 are used for V2X communications. When side-link transmission mode 3 is adopted, resource allocation is scheduled by the network device 101. Specifically, the network device 101 can send resource allocation information to the terminal device 102, and then the terminal device 102 allocates resources to another terminal device, so that the other terminal device can send information to the network device 101 through the allocated resources. . In V2X communication, a terminal device with better signal or higher reliability can be used as the terminal device 102 . The first terminal device mentioned in the embodiment of this application may refer to the terminal device 102, and the second terminal device may refer to the other terminal device.

It can be understood that the communication system described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. As those of ordinary skill in the art will know, With the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

It should be noted that the method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided in any embodiment of the present application can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with Any technical solutions in related technologies are executed together.

The method and device for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by this application will be introduced in detail below with reference to the accompanying drawings.

Please refer to Figure 2. Figure 2 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 2, the method may include but is not limited to the following steps:

S201. Determine candidate codewords for antenna fully coherent transmission of 4 transmit antenna ports (Tx) or 2 transmit antenna ports (Tx) of uplink MIMO transmission.

As transmission requirements and transmission scenarios increase, uplink transmission can support an increase in antenna ports and the number of uplink transmission layers. That is, the number of antenna ports can be increased from 4Tx to a maximum of 8Tx. Correspondingly, the number of uplink transmission layers can be changed from 4 to L Layer, for example, the value of L can be from 1 to 8.

Optionally, the number of antenna ports for uplink transmission and the number of uplink transmission layers L may be equal or unequal.

In this application, there is no limit to the method of determining candidate codewords for antenna fully coherent transmission of 4Tx and 2Tx, and can be determined according to actual conditions.

Optionally, the candidate codewords for 4Tx can be based on a 4-dimensional orthogonal codebook, such as the Kerdock codebook, to determine the candidate codewords for fully coherent antenna transmission of 4Tx; optionally, the candidate codewords for 2Tx , can be based on a 2-dimensional orthogonal codebook such as the Kerdock codebook to determine candidate codewords for 2Tx antenna fully coherent transmission. It should be noted that the Kerdock codebook is an orthogonal codebook used in communication system design and can be used to construct mutually unbiased basis sequences. The Kerdock codebook has orthogonality, that is, any two column vectors in each Kerdock codeword are orthogonal to each other.

Optionally, it can be the antenna fully coherent transmission codewords in the precoding codebook for uplink MIIMO transmission 4Tx and 2Tx agreed in the 3GPP communication protocol; optionally, it can be the downlink MIIMO 4Tx and 2Tx transmission agreed in the 3GPP communication protocol. codewords in the precoding codebook.

That is to say, the uplink precoding codebook for uplink MIIMO transmission 4Tx agreed in the 3GPP communication protocol can be determined, and the 4Tx antenna fully coherent transmission codeword in the uplink precoding codebook can be determined as the codeword in the embodiment of the present application. Candidate codewords for 4Tx antenna fully coherent transmission; alternatively, the downlink precoding codebook for downlink MIIMO transmission 4Tx agreed in the 3GPP communication protocol can be determined, and the 4Tx codewords in the downlink precoding codebook can be determined as the implementation of this application Candidate codewords for fully coherent transmission of the 4Tx antenna in the example.

Similarly, the uplink precoding codebook for uplink MIIMO transmission 2Tx agreed in the 3GPP communication protocol can be determined, and the antenna fully coherent transmission codeword of 2Tx in the uplink precoding codebook can be determined as the 2Tx in the embodiment of the present application. Candidate codewords for antenna fully coherent transmission; alternatively, the downlink precoding codebook for downlink MIIMO transmission 2Tx agreed in the 3GPP communication protocol can be determined, and the 2Tx codeword in the downlink precoding codebook can be determined as the 2Tx codeword in the embodiment of this application. Candidate codewords for fully coherent transmission of 2Tx antennas.

Optionally, the candidate codewords for fully coherent transmission of pre-configured 4Tx and 2Tx antennas may be used.

S202. Based on the 4Tx or 2Tx candidate codewords, determine the first codeword of the antenna fully coherent transmission of the 8Tx L layer for the uplink MIMO transmission.

Among them, L is used to represent the maximum number of uplink MIMO transmission transmission layers supported by the terminal device. The value of L is a positive integer, and L is less than or equal to 8.

In the embodiment of this application, the second codeword is determined from the 4Tx or 2Tx candidate codewords, and based on the determined second codeword, the first codeword of the antenna fully coherent transmission of the 8Tx L layer is determined, which can be transmitted through the antenna fully coherent The first codeword maps the data transmitted in each layer to all antenna ports.

此外，可以支持更多的相位角度，例如，按照角度间隔为45°，确定更多的相位角度。 In the case of the first codeword of the 8Tx L layer determined based on the candidate codewords of 4Tx: the second codeword is determined from the 4Tx candidate codewords, and the third codeword corresponding to the second codeword is determined, and the second codeword can be determined. The codeword and the third codeword are spliced to determine the first codeword for fully coherent transmission of the antenna at the 8Tx L layer. In order to ensure full coherence of the transmission layer, it is necessary to design co-phase coefficients for the splicing process, and based on the co-phase coefficients, splice the second codeword and the third codeword to obtain the first codeword. The common phase coefficient can be determined based on the common phase coefficient capability supported by the communication device, and can include a phase angle of

In addition, more phase angles can be supported, for example, more phase angles can be determined according to the angle interval of 45°.

In some implementations, splicing can be performed based on the common phase coefficient and any 4Tx codeword to obtain the first codeword of fully coherent transmission of the 8Tx L-layer antenna.

In other implementations, splicing can be performed based on the common phase coefficient and two 4Tx codewords to obtain the first codeword for fully coherent transmission of the 8Tx L-layer antenna.

In some implementations, more than two first codewords can be determined from the candidate codewords of 4Tx, and the determined two or more first codewords are spliced to generate the first codeword of the 8Tx L layer.

It should be noted that in the embodiment of the present application, when any codeword is not normalized, the normalization coefficient of any codeword can be determined, and the energy of any codeword can be normalized based on the normalization coefficient. Unified processing. Energy normalization processing of codewords is also applicable to the following embodiments.

In the case of the first codeword of the L layer of 8Tx determined based on the candidate codeword of 2Tx: In the embodiment of this application, the first codeword of the fully coherent antenna transmission of 8Tx is designed based on the candidate codeword of the 2Tx antenna fully coherent transmission. , it is necessary to design a common-phase coefficient matrix corresponding to 2Tx in advance, where the common-phase coefficient matrix is an orthogonal matrix. Further, based on determining the candidate codewords of the 2Tx 2 layer as the second codeword, a matrix dot multiplication operation is performed on the third co-phase coefficient matrix and the candidate codewords of the 2Tx 2 layer, that is, the coefficients in the co-phase coefficient matrix and The block matrix at the corresponding position in the codeword is multiplied to obtain the first codeword of the 8Tx L layer.

In the embodiment of this application, candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx corresponding to uplink MIMO transmission are determined. Based on the 4Tx or 2Tx candidate codewords, the first codeword for fully coherent antenna transmission of the 8TxL layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 3. Figure 3 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 3, the method may include but is not limited to the following steps:

S301. Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S301, please refer to the relevant content records in the above embodiments, and will not be described again here.

S302. Determine the second codeword from the candidate codewords, and determine the third codeword corresponding to the second codeword.

S303. Determine the common phase coefficient, and splice the second codeword and the third codeword based on the common phase coefficient to obtain the first codeword.

层的候选码字为第二码字，从第二码字中选取

层的码字，生成第三码字。 As a possible implementation, identify 4Tx

The candidate codeword of the layer is the second codeword, which is selected from the second codeword

The codewords of the layer are used to generate the third codeword.

As another possible implementation, determine the candidate codeword of 4Tx layer 4 as the second codeword, and determine the second codeword as the third codeword. Optionally, the candidate codewords of the 4Tx 4th layer are directly used as the third codewords, the first codewords of the 8Tx 8th layer are spliced, and then the first codewords of the 8Tx L layer are selected. Optionally, when the number of transmission layers is 4≤L≤8, according to the L layer, the codewords of the L-4 layer are selected from the second codewords to generate the third codeword.

层的候选码字为第二码字，确定4Tx

层的候选码字为第三码字。 As another possible implementation method, determine 4Tx

The candidate codeword of the layer is the second codeword, determining 4Tx

The candidate codeword of the layer is the third codeword.

As another possible implementation, when the number of transmission layers is 1 ≤ L ≤ 4, determine the candidate codeword of the 4Tx L layer as the second codeword, and directly use the candidate codeword of the 4Tx L layer as the third codeword. .

In the case of 4<L≤8, the first co-phase coefficient matrix can be determined, the two second codewords are spliced in the row dimension to generate the first spliced codeword, and the two third codes are spliced in the row dimension. The words are spliced to generate a second splicing codeword. Further, the first splicing codeword and the second splicing codeword are spliced in the column dimension to generate a third splicing codeword. The first co-phase coefficient matrix and the third splicing codeword are generated. The codewords are spliced and a matrix dot multiplication operation is performed to generate the first codeword.

When 1≤L≤4, determine the second co-phase coefficient matrix, splice the two second codewords in the row dimension, and generate a fourth spliced codeword, in which one of the two second codewords is is the third codeword, that is to say, the second codeword is directly determined as the third codeword. Further, a matrix dot multiplication operation is performed on the second co-phase coefficient matrix and the fourth concatenated codeword to generate the first codeword.

In the embodiment of this application, candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx corresponding to uplink MIMO transmission are determined. Based on the 4Tx or 2Tx candidate codewords, the first codeword for fully coherent antenna transmission of the 8TxL layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 4. Figure 4 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 4, the method may include but is not limited to the following steps:

S401. Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S401, please refer to the relevant content records in the above embodiments, and will not be described again here.

层的候选码字为第二码字，并从第二码字中选取

层的码字，生成第三码字。 S402, confirm 4Tx

The candidate codeword of the layer is the second codeword, and is selected from the second codeword

The codewords of the layer are used to generate the third codeword.

S403. Determine the common phase coefficient, and splice the second codeword and the third codeword based on the common phase coefficient to obtain the first codeword.

层的天线全相干传输的候选码字

为第二码字，并将

的任意

层确定为第三码字

例如可以选取前

层的码字生成第三码字。 Optionally, determine any 4Tx

Candidate codewords for fully coherent transmission by layer antennas

is the second code word, and will

of any

The layer is determined as the third codeword

For example, you can select the

The codewords of the layer generate the third codeword.

-1、

为共相位系数，可以确定第一共相位系数矩阵为：

或

Among them, 1.

-1,

is the common phase coefficient, the first common phase coefficient matrix can be determined as:

or

In the embodiment of the present application, after determining the second codeword and the third codeword, the two second codewords can be spliced in the row dimension to obtain the first spliced codeword, and the two third codewords can be spliced in the row dimension. Dimensionally spliced, the second spliced codeword is obtained. Further, the first splicing codeword and the second splicing codeword are spliced in the column dimension to obtain the third splicing codeword. In the embodiment of the present application, a matrix dot multiplication operation is performed on the first co-phase coefficient matrix and the third splicing codeword to generate the first codeword for fully coherent transmission of the antenna at the 8Tx L layer.

或

The first codeword of 8Tx L layer antenna fully coherent transmission: W _{8, L} can be

or

其中，该W’ _4,4为W _4,4的第1,2,3列，为第二码字对应的第三码字。 As an example, L=7, the candidate codeword for fully coherent transmission of the 4Tx 4-layer antenna is the second codeword:

Among them, the W' _4,4 is the 1st, 2nd, and 3rd columns of W _4,4 , which is the third codeword corresponding to the second codeword.

则8Tx 7层的天线全相干传输的第一码字为：

in,

Then the first codeword of fully coherent transmission by the 8Tx 7-layer antenna is:

It should be noted that when L is an odd number of layers, based on the layer number I of the second codeword, in order from the 1st layer to the Lth layer (from front to back) or from the Lth layer to the 1st layer (from back to back) The I layer in the L layer is selected to retain the second codeword in the order of forward), where the value of I is a positive integer less than or equal to 4. For example, when L is an odd number of layers and the second codeword is a candidate codeword of 4Tx 4 layers, the codewords of the first 4 layers can be selected from front to back as the second codeword W _4,4 , and the remaining 3 layers can be Determined by the third codeword, for example, the first three columns or the last three columns in W' _4,4 can be used. Alternatively, the codewords of the last four layers can also be selected from back to front as the second codeword W _4,4 , and the remaining three layers in front are determined by the third codeword. For example, the first three codewords in W' _4,4 can be used. column or the last three columns.

In the embodiment of this application, the candidate codewords for the fully coherent transmission of the 4Tx antenna corresponding to the uplink MIMO transmission are determined. Based on the candidate codewords of 4Tx, the first codeword of the fully coherent transmission of the antenna of the 8Tx L layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 5. Figure 5 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 5, the method may include but is not limited to the following steps:

S501. Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S501, please refer to the relevant content records in the above embodiments, and will not be described again here.

S502: Determine the candidate codeword of 4Tx layer 4 as the second codeword, and determine the second codeword as the third codeword.

S503: Determine the common phase coefficient, and splice the second codeword and the third codeword based on the common phase coefficient to obtain the first codeword.

Optionally, determine the fully coherent transmission codeword of any 4Tx 4-layer antenna as the second codeword: W _4,4 , where the third codeword is W _4,4 .

-1、

为共相位系数，可以确定第一共相位系数矩阵为：

或

Among them, 1.

-1,

is the common phase coefficient, the first common phase coefficient matrix can be determined as:

or

In the embodiment of the present application, after determining the second codeword and the third codeword, the two second codewords can be spliced in the row dimension to obtain the first spliced codeword, and the two third codewords can be spliced in the row dimension. Dimensionally spliced, the second spliced codeword is obtained. Further, the first splicing codeword and the second splicing codeword are spliced in the column dimension to obtain the third splicing codeword. In the embodiment of the present application, a matrix dot multiplication operation is performed on the first co-phase coefficient matrix and the third splicing codeword to generate the first codeword for fully coherent transmission of the antenna at the 8Tx L layer.

或

从W _8,8中选取任意L层构成的8Tx L层的天线全相干传输的第一码字。 8Tx The first codeword of L layer antenna fully coherent transmission: W _8,L can be a matrix composed of any L layer of W _8,8 , such as the first L layer,

or

Select the first codeword of fully coherent transmission of the antenna of the 8Tx L layer composed of any L layer from W _8,8 .

第三码字即为W _4,4；其中，

则8Tx 7层的天线全相干传输的第一码字为

中任意7列向量构成的矩阵，例如可以为第1列至第7列。 As an example, L=7, the fully coherent transmission codeword of the 4Tx 4-layer antenna is

The third codeword is W _4,4 ; where,

Then the first codeword of fully coherent transmission by the 8Tx 7-layer antenna is

A matrix composed of any 7-column vectors in , for example, can be the 1st to 7th columns.

As a possible implementation method, when the number of transmission layers is 4 ≤ L ≤ 8, according to the L layer, the code words of the L-4 layer are selected from the second code words to generate the third code words. That is to say, the codeword of the L-4 layer is selected from W _4,4 to generate the third codeword. For example, if L=6, the 1st, 2nd, and 3rd columns of W _4,4 can be selected as the third codeword corresponding to the second codeword. For the splicing process of the second codeword and the third codeword, please refer to the relevant records in the above embodiments, and will not be described again here.

It should be noted that when L is an odd number of layers, based on the layer number I of the second codeword, in order from the 1st layer to the Lth layer (from front to back) or from the Lth layer to the 1st layer (from back to back) The I layer in the L layer is selected to retain the second codeword in the order of forward), where the value of I is a positive integer less than or equal to 4.

In this embodiment of the present application, candidate codewords for 4Tx antenna fully coherent transmission corresponding to uplink MIMO transmission are determined. Based on the 4Tx candidate codewords, the first codeword for 8TxL layer antenna fully coherent transmission can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 6. Figure 6 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 6, the method may include but is not limited to the following steps:

S601. Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S601, please refer to the relevant content recorded in the above embodiments, and will not be described again here.

层的所述候选码字为第二码字，并确定4Tx

层的候选码字为第三码字。 S602, confirm 4Tx

The candidate codeword of the layer is the second codeword, and 4Tx is determined

The candidate codeword of the layer is the third codeword.

S603: Determine the common phase coefficient, and splice the second codeword and the third codeword based on the common phase coefficient to obtain the first codeword.

层的天线全相干传输码字为第二码字：

并且选取任意一个4Tx

的天线全相干传输码字为第三码字：

其中，1、

-1、

为共相位系数，可以确定第一共相位系数矩阵为：

或

Optionally, select any 4Tx

The antenna fully coherent transmission codeword of the layer is the second codeword:

And select any 4Tx

The fully coherent transmission codeword of the antenna is the third codeword:

Among them, 1.

-1,

is the common phase coefficient, the first common phase coefficient matrix can be determined as:

or

In the embodiment of the present application, after determining the second codeword and the third codeword, the process of splicing the second codeword and the third codeword can be found in the records of relevant content in the above embodiments, and will not be described again here. .

或

The first codeword of 8Tx L layer antenna fully coherent transmission: W _{8, L} can be

or

并选取4Tx 3层的天线全相干传输码字为第三码字：

其中，

则8Tx 7层的天线全相干传输的第一码字为

需要说明的是，在L为奇数层时，基于第二码字的层数I，按照从第1层至第L层(从前向后的顺序)或者从第L层至第1层(从后向前)的顺序选择L层中I层保留第二码字，其中，I的取值为小于或者等于4的正整数。 As an example, L=7, select the fully coherent transmission codeword of the 4Tx 4-layer antenna as the second codeword:

And select the fully coherent transmission codeword of the 4Tx 3-layer antenna as the third codeword:

in,

Then the first codeword of fully coherent transmission by the 8Tx 7-layer antenna is

It should be noted that when L is an odd number of layers, based on the layer number I of the second codeword, in order from the 1st layer to the Lth layer (from front to back) or from the Lth layer to the 1st layer (from back to back) The I layer in the L layer is selected to retain the second codeword in the order of forward), where the value of I is a positive integer less than or equal to 4.

In the embodiment of this application, the candidate codewords for the fully coherent transmission of the 4Tx antenna corresponding to the uplink MIMO transmission are determined. Based on the candidate codewords of 4Tx, the first codeword of the fully coherent transmission of the antenna of the 8Tx L layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to FIG. 7 , which is a schematic flowchart of a method for determining an antenna fully coherent transmission codeword for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 7, the method may include but is not limited to the following steps:

S701: Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S701, please refer to the relevant content records in the above embodiments, and will not be described again here.

S702: When the number of transmission layers 1≤L≤4, determine the candidate codeword of the 4Tx L layer as the second codeword, and determine the second codeword as the third codeword.

S703: Determine the common phase coefficient, and splice the second codeword and the third codeword based on the common phase coefficient to obtain the first codeword.

为共相位系数，可以确定第二共相位系数矩阵为：

Optionally, determine the fully coherent transmission codeword of any 4Tx L layer antenna to be the second codeword W _4,L , and the third codeword is also W _4,L ; where, 1,

is the common phase coefficient, the second common phase coefficient matrix can be determined as:

In the embodiment of the present application, when 1≤L≤4, the second co-phase coefficient matrix is determined, and the second codeword and the third codeword are spliced in the row dimension to generate the fourth spliced codeword, that is to say, The two second codewords are spliced to generate a fourth spliced codeword. In the case of 1≤L≤4, the second codeword is directly determined as the third codeword, that is, one of the two second codewords is the third codeword. Further, a matrix dot multiplication operation is performed on the second co-phase coefficient matrix and the fourth concatenated codeword to generate the first codeword.

The first codeword W _8,L of fully coherent transmission by the antenna of 8Tx L layer can be

则8Tx 3层的天线全相干传输第一码字为：

As an example, L=3, the fully coherent transmission codeword of the 4Tx 3-layer antenna is the second codeword:

Then the first codeword of fully coherent transmission by the 8Tx 3-layer antenna is:

In the embodiment of this application, the candidate codewords for the fully coherent transmission of the 4Tx antenna corresponding to the uplink MIMO transmission are determined. Based on the candidate codewords of 4Tx, the first codeword of the fully coherent transmission of the antenna of the 8Tx L layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 8. Figure 8 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 8, the method may include but is not limited to the following steps:

S801. Determine candidate codewords for antenna fully coherent transmission of 4Tx in uplink MIMO transmission.

For a specific introduction to step S801, please refer to the relevant content records in the above embodiments, and will not be described again here.

S802: Determine two or more codewords from the candidate codewords of 4Tx.

S803, determine the splicing positions of two or more codewords, splice them according to the splicing positions, and generate the first codeword of the 8Tx L layer.

Optionally, four identical 4Tx antenna fully coherent transmission codewords can be used for splicing to obtain the first codeword of an 8Tx antenna fully coherent transmission, for example, four identical 4Tx 4-layer antenna fully coherent transmission codes word, you can splice the first codeword of an 8Tx 8-layer antenna fully coherent transmission, that is, you can place a 4Tx 4-layer antenna fully coherent transmission codeword at the four corners, and you can get an 8Tx 8-layer antenna fully coherent transmission codeword. The first codeword of coherent transmission. For another example, if four identical 4Tx 3-layer antenna fully coherent transmission code words are spliced, the first code word of an 8Tx 6-layer antenna fully coherent transmission can be spliced, that is, a 4Tx 3-layer antenna can be placed at the four corners. The antenna fully coherent transmission codeword, you can get the first codeword of an 8Tx 6-layer antenna fully coherent transmission.

Alternatively, multiple different low-dimensional antenna fully coherent transmission codewords can be used to construct an 8Tx codeword. For example, 2, 3, or 4 different 4Tx antenna fully coherent transmission codewords can be spliced to obtain an 8Tx antenna fully coherent transmission codeword. The first codeword of coherent transmission.

For example, you can select a 4Tx 1-layer antenna fully coherent transmission codeword, a 4Tx 2-layer antenna fully coherent transmission codeword, a 4Tx 3-layer antenna fully coherent transmission codeword, and a 4Tx 4-layer antenna fully coherent transmission codeword, and generate them by splicing The first codeword of fully coherent transmission by an 8Tx antenna:

In the embodiment of this application, the candidate codewords for the fully coherent transmission of the 4Tx antenna corresponding to the uplink MIMO transmission are determined. Based on the candidate codewords of 4Tx, the first codeword of the fully coherent transmission of the antenna of the 8Tx L layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 9. Figure 9 is a schematic flowchart of a method for determining antenna fully coherent transmission codewords for uplink MIMO transmission provided by an embodiment of the present application. As shown in Figure 9, the method may include but is not limited to the following steps:

S901: Determine candidate codewords for antenna fully coherent transmission of 2Tx in uplink MIMO transmission.

For a detailed introduction to step S901, please refer to the relevant content records in the above embodiments, and will not be described again here.

S902: Determine the third co-phase coefficient matrix of the candidate codeword of 2Tx, where the third co-phase coefficient matrix is an orthogonal matrix.

In order to support candidate codewords based on 2Tx antenna fully coherent transmission and construct the first codeword for 8Tx antenna fully coherent transmission, in the embodiment of this application, it is necessary to design a corresponding third co-phase coefficient matrix, where the third co-phase coefficient The matrix needs to be an orthogonal matrix. For example, the third co-phase coefficient matrix can be

S903, determine the candidate codewords of the 2Tx 2 layer, and perform a matrix dot multiplication operation on the third common phase coefficient matrix and the candidate codewords of the 2Tx 2 layer to obtain the first codeword of the 8Tx L layer.

对第三共相位系数矩阵和2Tx 2层的候选码字做矩阵点乘运算，得到8Tx L层的天线全相干传输的第一码字，即8TxL层的第一码字为

For example, the candidate codeword for antenna fully coherent transmission in 2Tx2 layer is

Perform a matrix dot multiplication operation on the third co-phase coefficient matrix and the candidate codewords of the 2Tx 2 layer to obtain the first codeword of the antenna fully coherent transmission of the 8Tx L layer, that is, the first codeword of the 8TxL layer is

In this embodiment of the present application, candidate codewords for 2Tx antenna fully coherent transmission corresponding to uplink MIMO transmission are determined. Based on the 2Tx candidate codewords, the first codeword for 8TxL layer antenna fully coherent transmission can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

It should be noted that each of the foregoing embodiments can be executed individually or in any combination. And each of the foregoing embodiments can be executed by a network side device (such as a base station). In one implementation, the foregoing embodiments are executed by a network side device (eg, a base station), and the network side device (eg, a base station) sends the final determined second codeword to the UE.

In some possible implementations, the foregoing embodiments may also be executed by user equipment UE. Further, the UE sends the finally determined second codeword to the network side device (for example, the base station).

In other possible implementations, the foregoing embodiments may also be executed by each of the network side equipment (such as a base station) and the user equipment UE.

The method for determining the codeword for full antenna coherent transmission provided by the above embodiment can be applied to terminal equipment and network equipment, and after determining the first codeword for full antenna coherent transmission, the precoding code can be determined based on the first codeword. This, terminal equipment and network equipment can perform physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission based on this precoding codebook.

The process of codebook-based uplink transmission (such as PUSCH transmission) is explained below:

Please refer to Figure 10, which is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application. Executed by the terminal device, as shown in Figure 10, the method may include but is not limited to the following steps:

S1001. Receive precoding matrix indication information sent by the network device.

It should be noted that during the PUSCH transmission process based on the precoding codebook, the network device can send Transmit Precoding Matrix Indicator (TPMI) information to the terminal device, where the precoding matrix indication information carries the precoding code According to this design information, the terminal device can receive the precoding indication information sent by the network device.

Among them, TPMI is used to indicate a target codeword in the precoding matrix.

S1002. Based on the precoding matrix indication information, determine the target codeword corresponding to the uplink transmission from the precoding codebook of the 8Tx L layer corresponding to the uplink MIMO transmission.

It should be noted that the terminal device can determine the target codeword corresponding to the uplink transmission from the precoding codebook of the 8TxL layer corresponding to the uplink MIMO transmission based on TPMI. It should be noted that the precoding codebook corresponding to the uplink MIMO transmission includes the first codeword that determines the fully coherent transmission of the antenna in the above embodiment. Regarding the process of determining the first codeword for fully coherent transmission by the antenna of the 8TxL layer, please refer to the relevant content in the above embodiments and will not be described again here.

The terminal device can determine a target codeword from the precoding codebook based on TPMI. Optionally, the mapping relationship between the codeword and the index can be set in advance, and the target codeword for uplink transmission is determined from the precoding codebook based on the index.

S1003: Precode the PUSCH based on the target codeword and send it to the network device.

After obtaining the target codeword, the PUSCH can be precoded based on the target codeword, and the precoded PUSCH is sent to the network device.

In the embodiment of this application, the precoding matrix indication information sent by the network device is received, and based on the precoding matrix indication information, the target codeword corresponding to the uplink transmission is determined from the precoding codebook of the 8Tx L layer corresponding to the uplink MIMO transmission. The target codeword precodes the PUSCH and sends it to the network device. In this application, based on low-dimensional antenna fully coherent transmission codewords, high-dimensional 8Tx antenna fully coherent transmission codewords are constructed, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby further enhancing uplink MIMO technology.

Please refer to Figure 11, which is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application. Executed by the network device, as shown in Figure 11, the method may include but is not limited to the following steps:

S1101. Determine the precoding matrix indication information and send the precoding matrix indication information to the terminal device to instruct the terminal device to determine the target codeword corresponding to the uplink transmission from the precoding codebook of the 8Tx L layer corresponding to the uplink MIMO transmission.

In the embodiment of this application, the network device can receive the Sounding Reference Signals (SRS) resource sent by the terminal device, perform channel evaluation based on the SRS resource, determine the TPMI based on the estimated channel condition, and send the TPMI to the terminal device . The TPMI is used to indicate a codeword in the precoding matrix, and may be the index of the codeword.

It should be noted that the precoding codebook corresponding to the uplink MIMO transmission includes the first codeword of the 8Tx antenna-based fully coherent transmission in the above embodiment. Regarding the process of determining the first codeword for fully coherent transmission by the antenna of the 8Tx L layer, please refer to the records of relevant content in the above embodiments, and will not be described again here.

S1102. Receive the PUSCH transmission sent by the terminal device, where the PUSCH transmission is precoded by the terminal device based on the target codeword.

After receiving the TPMI, the terminal device can obtain the target codeword determined for uplink transmission, precode the PUSCH based on the target codeword, and send the precoded PUSCH to the network device. Accordingly, the network device can receive the PUSCH transmission sent by the terminal device.

In the embodiment of the present application, the precoding matrix indication information is determined and the precoding matrix indication information is sent to the terminal device to instruct the terminal device to determine the target corresponding to the uplink transmission from the precoding codebook of the 8Tx L layer corresponding to the uplink MIMO transmission. The codeword is to receive the PUSCH transmission sent by the terminal device, where the PUSCH transmission is obtained by precoding the terminal device based on the target codeword. In the embodiment of this application, the precoding matrix indication information sent by the network device is received, and based on the precoding matrix indication information, the target codeword corresponding to the uplink transmission is determined from the precoding codebook of the 8Tx L layer corresponding to the uplink MIMO transmission. The target codeword precodes the PUSCH and sends it to the network device. In this application, based on low-latitude antenna fully coherent transmission codewords, high-latitude 8Tx antenna fully coherent transmission codewords are constructed, which can enable uplink MIMO to support the transmission requirements of layer 1 to layer 8 of 8Tx, thereby further enhancing uplink MIMO technology.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspectives of network equipment and terminal equipment respectively. In order to implement each function in the method provided by the above embodiments of the present application, the network device and the first terminal device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. . A certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to FIG. 12 , which is a schematic structural diagram of a communication device 120 provided by an embodiment of the present application. The communication device 120 shown in FIG. 7 may include a transceiver module 1201 and a processing module 1202. The transceiving module 1201 may include a sending module and/or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiving module 1201 may implement the sending function and/or the receiving function.

The communication device 120 may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device. Alternatively, the communication device 120 may be a network device, a device in a network device, or a device that can be used in conjunction with the network device.

The processing module 1202 is used to determine candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx for uplink MIMO transmission; based on the candidate codewords, determine the first codeword for fully coherent antenna transmission of the 8Tx L layer for uplink MIMO transmission, The L is a positive integer and is less than or equal to 8.

Optionally, the processing module 1202 is also configured to determine a second codeword from the candidate codewords in the case of 4Tx, and determine a third codeword corresponding to the second codeword; determine the common phase coefficient, and based on the common-phase coefficient, the second codeword and the third codeword are spliced to obtain the first codeword.

Optionally, the processing module 1202 is also configured to determine the first co-phase coefficient matrix when 4<L≤8; splice the two second codewords in the row dimension to generate a first spliced codeword; The two third codewords are spliced in the row dimension to generate a second spliced codeword; the first spliced codeword and the second spliced codeword are spliced in the column dimension to generate a third spliced codeword. codeword; perform a matrix dot multiplication operation on the first co-phase coefficient matrix and the third concatenated codeword to generate the first codeword, wherein the coefficients in the first co-phase coefficient matrix and the The block matrices at corresponding positions in the third concatenated codeword are multiplied.

Optionally, the processing module 1202 is also configured to determine a second co-phase coefficient matrix when 1≤L≤4; splice the two second codewords in the row dimension to generate a fourth spliced codeword, Wherein, one of the two second codewords is the third codeword; a matrix dot multiplication operation is performed on the second co-phase coefficient matrix and the fourth splicing codeword to generate the first codeword, wherein the coefficients in the second co-phase coefficient matrix are multiplied by the block matrix at the corresponding position in the fourth concatenated codeword.

层的所述候选码字为所述第二码字；从所述第二码字中选取

层的码字，生成所述第三码字。 Optionally, the processing module 1202 is also used to determine 4Tx

The candidate codeword of the layer is the second codeword; select from the second codeword

layer codewords to generate the third codeword.

Optionally, the processing module 1202 is also configured to determine that the candidate codeword of the 4Tx 4 layer is the second codeword; and determine that the second codeword is the third codeword.

Optionally, the processing module 1202 is also used to splice the second codeword and the third codeword to obtain the first codeword of 8Tx 8 layers; from the first codeword of the 8Tx 8 layers The codewords of the L layer are selected from the codewords to generate the first codeword of the 8Tx L layer.

Optionally, the processing module 1202 is also configured to determine that the candidate codeword of the 4Tx 4 layer is the second codeword; when the number of transmission layers 4≤L≤8, according to the L layer, from the third codeword Select the codeword of the L-4 layer from the two codewords to generate the third codeword.

层的所述候选码字为所述第二码字；确定4Tx

层的所述候选码字为所述第三码字。 Optionally, the processing module 1202 is also used to determine 4Tx

The candidate codeword of the layer is the second codeword; determine 4Tx

The candidate codeword of the layer is the third codeword.

Optionally, the processing module 1202 is also configured to determine that the candidate codeword of the 4Tx L layer is the second codeword when the number of transmission layers 1≤L≤4; determine that the second codeword is the Describe the third code word.

Optionally, the processing module 1202 is also configured to determine two or more codewords from the 4Tx candidate codewords; determine the splicing positions of the two or more codewords, as described Splicing is performed at the splicing position to generate the first codeword of the 8Tx L layer.

Optionally, the processing module 1202 is also configured to determine the common phase coefficient based on the phase angle supported by the communication device.

Optionally, the processing module 1202 is also used to determine the third co-phase coefficient matrix of the candidate codeword of 2Tx, where the third co-phase coefficient matrix is an orthogonal matrix; determine all the 2Tx 2 layers. The candidate codeword is obtained, and a matrix dot multiplication operation is performed on the third co-phase coefficient matrix and the candidate codeword of the 2Tx 2 layer to obtain the first codeword of the 8Tx L layer, wherein the The coefficients in the three-phase coefficient matrix are multiplied by the block matrix at the corresponding position in the candidate codeword of the 2Tx 2 layer.

Optionally, the processing module 1202 is also configured to, when the L is an odd number of layers, based on the layer number I of the second codeword, from the 1st layer to the Lth layer or from the Lth layer to the 1st layer The I layer in the L layer is selected in order to retain the second codeword, and the value of I is a positive integer less than or equal to 4; the codeword of the remaining layer is determined to be the third codeword.

Optionally, the processing module 1202 is also configured to determine the normalization coefficient of any codeword, and perform energy normalization processing on the any codeword based on the normalization coefficient.

In the embodiment of this application, candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx corresponding to uplink MIMO transmission are determined. Based on the 4Tx or 2Tx candidate codewords, the first codeword for fully coherent antenna transmission of the 8TxL layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

Please refer to Figure 13, which is a schematic structural diagram of another communication device 130 provided by an embodiment of the present application. The communication device 130 may be a network device, a terminal device, a chip, a chip system, or a processor that supports a network device to implement the above method, or a chip, a chip system, or a processor that supports a terminal device to implement the above method. Processor etc. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication device 130 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

Optionally, the communication device 130 may also include one or more memories 1302, on which a computer program 1303 may be stored. The processor 1301 executes the computer program 1303, so that the communication device 130 performs the steps described in the above method embodiments. method. Optionally, the memory 1302 may also store data. The communication device 130 and the memory 1302 can be provided separately or integrated together.

Optionally, the communication device 130 may also include a transceiver 1304 and an antenna 1305. The transceiver 1304 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 1304 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 130 may also include one or more interface circuits 1306. The interface circuit 1306 is used to receive code instructions and transmit them to the processor 1301 . The processor 1301 executes the code instructions to cause the communication device 130 to perform the method described in the above method embodiment.

The communication device 130 is a terminal device used to implement the functions of the terminal device in the aforementioned embodiments.

The communication device 130 is a network device used to implement the functions of the network device in the aforementioned embodiments.

In one implementation, the processor 1301 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 1301 may store a computer program 1303, and the computer program 1303 runs on the processor 1301, causing the communication device 130 to perform the method described in the above method embodiment. The computer program 1303 may be solidified in the processor 1301, in which case the processor 1301 may be implemented by hardware.

In one implementation, the communication device 130 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-ox ide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a network device or network device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 13 . The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) Independent 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 computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 14 . The chip shown in Figure 14 includes a processor 1401 and an interface 1402. The number of processors 1401 may be one or more, and the number of interfaces 1402 may be multiple.

Processor 1401, configured to determine candidate codewords for antenna fully coherent transmission of 4Tx or 2Tx for uplink MIMO transmission; based on the candidate codewords, determine the first codeword for antenna fully coherent transmission of 8Tx L layer for uplink MIMO transmission, The L is a positive integer and is less than or equal to 8.

Optionally, the processor 1401 is also configured to determine a second codeword from the candidate codewords in the case of 4Tx, and determine a third codeword corresponding to the second codeword; determine the common phase coefficient, and based on the common-phase coefficient, the second codeword and the third codeword are spliced to obtain the first codeword.

Optionally, the processor 1401 is also configured to determine the first co-phase coefficient matrix when 4<L≤8; splice the two second codewords in the row dimension to generate a first spliced codeword; The two third codewords are spliced in the row dimension to generate a second spliced codeword; the first spliced codeword and the second spliced codeword are spliced in the column dimension to generate a third spliced codeword. codeword; perform a matrix dot multiplication operation on the first co-phase coefficient matrix and the third concatenated codeword to generate the first codeword, wherein the coefficients in the first co-phase coefficient matrix and the The block matrices at corresponding positions in the third concatenated codeword are multiplied.

Optionally, the processor 1401 is also configured to determine a second co-phase coefficient matrix when 1≤L≤4; splice the two second codewords in the row dimension to generate a fourth spliced codeword, Wherein, one of the two second codewords is the third codeword; a matrix dot multiplication operation is performed on the second co-phase coefficient matrix and the fourth splicing codeword to generate the first codeword, wherein the coefficients in the second co-phase coefficient matrix are multiplied by the block matrix at the corresponding position in the fourth concatenated codeword.

层的所述候选码字为所述第二码字；从所述第二码字中选取

层的码字，生成所述第三码字。 Optionally, the processor 1401 is also used to determine the 4Tx

The candidate codeword of the layer is the second codeword; select from the second codeword

layer codewords to generate the third codeword.

Optionally, the processor 1401 is also configured to determine that the candidate codeword of the 4Tx 4 layer is the second codeword; and determine that the second codeword is the third codeword.

Optionally, the processor 1401 is also configured to splice the second codeword and the third codeword to obtain the first codeword of 8Tx 8 layers; from the first codeword of the 8Tx 8 layers The codewords of the L layer are selected from the codewords to generate the first codeword of the 8Tx L layer.

Optionally, the processor 1401 is also configured to determine that the candidate codeword of the 4Tx 4 layer is the second codeword; when the number of transmission layers 4≤L≤8, according to the L layer, from the third codeword Select the codeword of the L-4 layer from the two codewords to generate the third codeword.

层的所述候选码字为所述第二码字；确定4Tx

层的所述候选码字为所述第三码字。 Optionally, the processor 1401 is also used to determine the 4Tx

The candidate codeword of the layer is the second codeword; determine 4Tx

The candidate codeword of the layer is the third codeword.

Optionally, the processor 1401 is further configured to determine that the candidate codeword of the 4TxL layer is the second codeword when the number of transmission layers 1≤L≤4; determine that the second codeword is the The third code word.

Optionally, the processor 1401 is also configured to determine two or more codewords from the 4Tx candidate codewords; determine the splicing positions of the two or more codewords, as described Splicing is performed at the splicing position to generate the first codeword of the 8Tx L layer.

Optionally, the processor 1401 is also configured to determine the common phase coefficient based on the phase angle supported by the communication device.

Optionally, the processor 1401 is also used to determine the third co-phase coefficient matrix of the candidate codeword of 2Tx, where the third co-phase coefficient matrix is an orthogonal matrix; determine all the 2Tx 2 layers. The candidate codeword is obtained, and a matrix dot multiplication operation is performed on the third co-phase coefficient matrix and the candidate codeword of the 2Tx 2 layer to obtain the first codeword of the 8Tx L layer, wherein the The coefficients in the three-phase coefficient matrix are multiplied by the block matrix at the corresponding position in the candidate codeword of the 2Tx 2 layer.

Optionally, the processor 1401 is also configured to, when the L is an odd number of layers, based on the layer number I of the second codeword, from the 1st layer to the Lth layer or from the Lth layer to the 1st layer. The I layer in the L layer is selected in order to retain the second codeword, and the value of I is a positive integer less than or equal to 4; the codeword of the remaining layer is determined to be the third codeword.

Optionally, the processor 1401 is also configured to determine the normalization coefficient of any codeword, and perform energy normalization processing on the any codeword based on the normalization coefficient.

In the embodiment of this application, candidate codewords for fully coherent antenna transmission of 4Tx or 2Tx corresponding to uplink MIMO transmission are determined. Based on the 4Tx or 2Tx candidate codewords, the first codeword for fully coherent antenna transmission of the 8TxL layer can be determined. In the embodiments of this application, high-dimensional 8Tx antenna fully coherent transmission codewords can be constructed based on low-dimensional antenna fully coherent transmission codewords, which can enable uplink MIMO to support 8Tx layer 1 to layer 8 transmission requirements, thereby improving uplink MIMO technology. further enhanced.

The chip 140 also includes a memory 1403 for storing necessary computer programs and data.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

Embodiments of the present application also provide a communication system, which includes a communication device as a terminal device in the embodiment of FIG. 8 and a communication device as a network device, or the system includes a communication device as a terminal device in the embodiment of FIG. 9 devices and communication devices as network equipment.

This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application. In the embodiment of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

The corresponding relationships shown in each table in this application can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which are not limited by this application. When configuring the correspondence between information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, in the table in this application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.

Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (19)

A method for determining antenna fully coherent transmission codewords for uplink MIMO transmission, characterized in that the method includes: Determine candidate codewords for antenna fully coherent transmission of 4 transmit antenna ports (Tx) or 2 transmit antenna ports (Tx) for uplink MIMO transmission; Based on the candidate codewords, determine the first codeword for antenna fully coherent transmission of the 8Tx L layer of uplink MIMO transmission, where L is a positive integer and is less than or equal to 8. The method according to claim 1, characterized in that, in the case of the 4Tx, the first codeword of the antenna fully coherent transmission of the 8Tx L layer of the uplink MIMO transmission is determined based on the candidate codeword. ,include: Determine a second codeword from the candidate codewords, and determine a third codeword corresponding to the second codeword; A common phase coefficient is determined, and based on the common phase coefficient, the second codeword and the third codeword are spliced to obtain the first codeword. The method according to claim 2, characterized in that, based on the common phase coefficient, splicing the second codeword and the third codeword to obtain the first codeword includes: When 4<L≤8, determine the first common phase coefficient matrix; Splicing the two second codewords in the row dimension to generate a first spliced codeword; Splicing the two third codewords in the row dimension to generate a second spliced codeword; Splicing the first splicing codeword and the second splicing codeword in the column dimension to generate a third splicing codeword; Perform a matrix dot multiplication operation on the first co-phase coefficient matrix and the third concatenated codeword to generate the first codeword, wherein the coefficients in the first co-phase coefficient matrix and the third concatenated codeword Multiply the block matrices at corresponding positions in the codeword. The method according to claim 2, characterized in that, based on the common phase coefficient, splicing the second codeword and the third codeword to obtain the first codeword includes: When 1≤L≤4, determine the second common phase coefficient matrix; Splicing the two second codewords in the row dimension to generate a fourth concatenated codeword, wherein one of the two second codewords is the third codeword; Perform a matrix dot multiplication operation on the second co-phase coefficient matrix and the fourth concatenated codeword to generate the first codeword, wherein the coefficients in the second co-phase coefficient matrix and the fourth concatenated codeword Multiply the block matrices at corresponding positions in the codeword. The method according to any one of claims 2 to 4, characterized in that determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword includes: : OK4Tx

The candidate codeword of the layer is the second codeword; Select from the second codeword

layer codewords to generate the third codeword. The method according to any one of claims 2 to 4, characterized in that determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword includes: : Determine the candidate codeword of 4Tx layer 4 as the second codeword; The second codeword is determined to be the third codeword. The method of claim 6, further comprising: Splicing the second codeword and the third codeword to obtain the first codeword of 8Tx 8 layers; Select the codeword of the L layer from the first codeword of the 8Tx8 layer to generate the first codeword of the 8Tx L layer. The method of claim 6, wherein determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword includes: Determine the candidate codeword of 4Tx layer 4 as the second codeword; When the number of transmission layers is 4≤L≤8, according to the L layer, the codewords of the L-4 layer are selected from the second codewords to generate the third codewords. The method according to any one of claims 2 to 4, characterized in that determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword includes: : OK4Tx

The candidate codeword of the layer is the second codeword; OK4Tx

The candidate codeword of the layer is the third codeword. The method according to any one of claims 2 or 4, characterized in that determining a second codeword from the candidate codewords and determining a third codeword based on the second codeword includes: When the number of transmission layers is 1≤L≤4, it is determined that the candidate codeword of the 4TxL layer is determined as the second codeword; The second codeword is determined to be the third codeword. The method of claim 1, further comprising: Determine two or more codewords from the candidate codewords of the 4Tx; Determine the splicing positions of the two or more codewords, perform splicing according to the splicing positions, and generate the first codeword of the 8Tx L layer. The method of claim 2, further comprising: The common phase coefficient is determined based on the phase angles supported by the communication device. The method of claim 2, further comprising: Determine a third co-phase coefficient matrix of the candidate codeword of 2Tx, wherein the third co-phase coefficient matrix is an orthogonal matrix; Determine the candidate codewords of the 2Tx 2 layer, and perform a matrix dot multiplication operation on the third common phase coefficient matrix and the candidate codewords of the 2Tx 2 layer to obtain the first codeword of the 8Tx L layer. codeword, wherein the coefficients in the third co-phase coefficient matrix are multiplied by the block matrix of the corresponding position in the candidate codeword of the 2Tx 2 layer. The method of claim 2, further comprising: When L is an odd number of layers, based on the layer number I of the second codeword, I layers in the L layers are selected in order from the 1st layer to the Lth layer or from the Lth layer to the 1st layer to retain the above For the second codeword, the value of I is a positive integer less than or equal to 4; The codeword of the remaining layer is determined to be the third codeword. The method of claim 1, further comprising: The normalization coefficient of any codeword is determined, and energy normalization processing is performed on the any codeword based on the normalization coefficient. A communication device, characterized by including: A processing module configured to determine candidate codewords for antenna fully coherent transmission of 4Tx or 2Tx for uplink MIMO transmission; based on the candidate codewords, determine the first codeword for antenna fully coherent transmission of 8Tx L layer for uplink MIMO transmission, so L is a positive integer and is less than or equal to 8. A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims The method described in any one of 1 to 15. A communication device, characterized by including: a processor and an interface circuit; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 15. A computer-readable storage medium for storing instructions, which when executed, enables the method according to any one of claims 1 to 15 to be implemented.

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