CN117616698A - A method and device for determining partial antenna coherent transmission codewords - Google Patents

Abstract

The embodiment of the application discloses a method and a device for determining partial antenna coherent transmission code words, which are applied to the technical field of communication, wherein the method comprises the following steps: determining a first codeword of antenna full coherence transmission of an L layer of an N antenna port corresponding to MIMO uplink transmission, wherein L is a positive integer, and L is smaller than or equal to N; determining a sparse matrix corresponding to a first codeword based on the first codeword of the antenna full-coherent transmission; and determining a second codeword of the partial antenna coherent transmission of the L layer of the N antenna ports according to the first codeword and the corresponding sparse matrix. In the embodiment of the application, partial antenna coherent transmission code words can be designed based on the antenna full coherent transmission code words, so that the requirement of 8 antenna ports for 1-layer to 8-layer transmission can be supported by MIMO uplink, and further uplink MIMO technology is further enhanced.

Description

A method and device for determining partial antenna coherent transmission codewords Technical field

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

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 uplink systems based on codebook transmission ,Codebook design is also an important part of precoding technology. The maximum number of antenna ports supported by the existing MIMO uplink transmission part antenna coherent transmission codeword is 4, that is, the existing MIMO uplink part antenna coherent transmission codeword only supports transmission of a maximum of 4 antenna ports and a maximum of 4 layers. In the MIMO uplink transmission antenna port During enhancement, the transmission requirements of the enhanced antenna port cannot be met.

Contents of the invention

Embodiments of the present application provide a method and device for determining partial antenna coherent transmission codewords. Partial antenna coherent transmission codewords are designed through all antennas fully coherent transmission codewords, which can be applied to MIMO uplink transmission from layer 1 to layer 8 of 8 antenna ports. Partial antenna coherent transmission codeword design.

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

Determine the first codeword of the antenna fully coherent transmission of the L layer of the N antenna port corresponding to the MIMO uplink transmission, the L is a positive integer, and the L is less than or equal to the N;

Based on the first codeword fully coherently transmitted by the antenna, determine the sparse matrix corresponding to the first codeword;

According to the first codeword and the corresponding sparse matrix, a second codeword for partial antenna coherent transmission of the N antenna port L layer is determined.

In the embodiment of the present application, the first codeword of the fully coherent antenna transmission of the N antenna port corresponding to the MIMO uplink transmission is determined. Based on the first codeword of the N antenna port and the sparse matrix corresponding to the first codeword, the N antenna port can be determined The second codeword transmitted coherently by some antennas of the L layer. In the embodiment of this application, some antenna coherent transmission codewords can be designed based on the antenna fully coherent transmission codeword, which can enable MIMO uplink to support the transmission requirements of layer 1 to layer 8 of 8 antenna ports, thereby further enhancing the uplink MIMO technology.

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 partial antenna coherent transmission codewords provided by an embodiment of the present application;

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

Figure 4 is a schematic flowchart of a codeword-based uplink transmission method provided by an embodiment of the present application;

Figure 5 is a schematic flowchart of another codeword-based uplink transmission method provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 8 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 present embodiments 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, but 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 partial antenna coherent transmission codewords for MIMO uplink transmission disclosed in the embodiments of the present application, it is determined that the partial antenna coherent transmission codewords are applicable to communication systems. The communication systems applicable to the embodiments of the present application are first described below.

In order to better understand the method for determining partial antenna coherent transmission codewords disclosed in the embodiments of the present application, the following first describes the communication system to which the embodiments of the present application are applicable.

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 may be an evolved base station (evolved NodeB, eNB), a 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 technology and specific equipment form used by the network equipment. The network device provided by the embodiment of the present application may be composed of a centralized 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 may also be called terminal equipment (terminal), user equipment (UE), 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 (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 the antenna coherent transmission codewords of the MIMO uplink transmission part provided in any embodiment of this application can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with related Any of the technical solutions are implemented together.

The method and device for determining partial antenna coherent transmission codewords 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 partial antenna coherent transmission codewords provided by an embodiment of the present application. The implementation of the method for determining the partial antenna coherent transmission codeword is a communication device. As shown in Figure 2, the method may include but is not limited to the following steps:

S21. Determine the first codeword of antenna fully coherent transmission of the L layer of the N antenna port corresponding to the MIMO uplink transmission.

Among them, L is a positive integer, and L is less than or equal to N. N is a positive integer power of 2 and N is greater than 4.

As transmission requirements and transmission scenarios increase, uplink transmission can support increased antenna ports and the number of uplink transmission layers. That is, the number of antenna ports can be increased from 4 to a maximum of N. Correspondingly, the number of uplink transmission layers can be expanded from 4 layers. L layer, for example, the value of N can be 8, and the value of L can also be from 1 to 8.

Optionally, the number of antenna ports N for uplink transmission and the number of uplink transmission layers L may be equal or unequal. That is to say, MIMO uplink transmission may be uplink transmission for layer L of N antenna ports, L=N. In this case Below, the number of uplink transmission layers L is equal to the number of antenna ports N; MIMO uplink transmission can also be L layers of N antenna ports. In this case, the number of uplink transmission layers L is smaller than the number of antenna ports N.

In this application, the method for determining the first codeword of the N antenna port is not limited and can be determined according to actual conditions.

Optionally, the first codeword of the N antenna port may be the first codeword that pre-configures fully coherent transmission of all antennas. Optionally, the first codeword of the N antenna port can be based on an N-dimensional orthogonal codebook such as the Kerdock codebook, which determines the first codeword of fully coherent transmission by all antennas of the N antenna port. Optionally, in this application, energy normalization is performed on the Kerdock codebook to obtain the first codeword of fully coherent transmission by all antennas of N antenna ports. 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 base sequences. The Kerdock codebook has orthogonality, that is, any two column vectors in each Kerdock codeword are orthogonal to each other. The N-dimensional Kerdock codebook contains a total of N codewords, each of which is an N-dimensional orthogonal matrix and contains only four elements: 1, -1, i, and -i.

Optionally, it can be all antenna fully coherent transmission codewords in the precoding codebook of the MIIMO uplink transmission N antenna port agreed in the 3GPP communication protocol; optionally, it can be the MIIMO downlink transmission N antenna port agreed in the 3GPP communication protocol. All antennas in the precoding codebook transmit codewords fully coherently. For example, the uplink fully coherent codewords can use downlink Type I single panel (Single Panel, SP) codewords. Optionally, the codeword can be fully coherently transmitted for all antennas in the preconfigured N antenna port precoding codebook.

S22. Based on the first codeword fully coherently transmitted by the antenna, determine the sparse matrix corresponding to the first codeword.

It should be noted that in this application, for the number of first codewords fully coherently transmitted by all antennas of N antenna ports, the first codewords transmitted fully coherently by all antennas are used to map the data transmitted by each layer to all on the antenna port. In a possible implementation, the first codeword is a non-sparse matrix.

It should be noted that the value of the matrix element in the sparse matrix can indicate whether the transmission layer indicated by the matrix element performs data transmission on the corresponding port; the value of the matrix element is "1", indicating that the transmission layer indicated by the matrix element can transmit data on the corresponding port. The data of the transport layer is transmitted on the port. If the value of the matrix element is "0", it means that the data of the transport layer cannot be transmitted on the corresponding port.

In the embodiment of the present application, since the first codeword of fully coherent transmission by the antenna is a non-sparse matrix, but in partial coherent transmission, only the transmission layers corresponding to some antenna ports are orthogonal to each other. For example, after N antenna ports are grouped, each group only corresponds to part of the antenna ports; for example, 8 antenna ports are divided into 2 groups, each group has 4 antenna ports, corresponding to 4 uplink transmission layers; at this time, it is necessary to The four uplink transmission layers within a group must be orthogonal to each other; there is no need to require that the uplink transmission layers between different groups must be orthogonal to each other. Therefore, it is necessary to design a sparse matrix, and perform a matrix dot multiplication operation between the first codeword and the sparse matrix to obtain the second codeword for partially coherent transmission. That is, based on the known first codeword, through the sparse matrix Design, and obtain the second codeword of the orthogonal uplink transmission layer number in the antenna port group.

Alternatively, the sparse matrix corresponding to the first codeword can be directly configured based on the orthogonality between the N antenna ports based on the first codeword.

Optionally, a correlation operation can be performed on the first codeword based on the first codeword, and the sparse matrix is determined based on the operation result. In some implementations, the first codeword can be split to form multiple submatrices, and a sparse matrix corresponding to the first codeword can be constructed based on the orthogonality of the submatrices.

S23. According to the first codeword and the corresponding sparse matrix, determine the second codeword for partial antenna coherent transmission of the L layer of the N antenna port.

Optionally, a Hadamard operation is performed on the first codeword and the sparse matrix corresponding to the first codeword to obtain the second codeword corresponding to the first codeword. It should be noted that there are multiple first codewords for N antenna ports, and the corresponding sparse matrix can be obtained for each first codeword according to the above implementation. That is to say, each first codeword corresponds to at least one first codeword. Two code words.

In the embodiment of the present application, the first codeword of the fully coherent antenna transmission of the N antenna port corresponding to the MIMO uplink transmission is determined. Based on the first codeword of the N antenna port and the sparse matrix corresponding to the first codeword, the N antenna port can be determined The second codeword transmitted coherently by some antennas of the L layer. In the embodiment of this application, some antenna coherent transmission codewords can be designed based on the antenna fully coherent transmission codeword, which can enable MIMO uplink to support the transmission requirements of layer 1 to layer 8 of 8 antenna ports, thereby further enhancing the uplink MIMO technology.

Please refer to Figure 3. Figure 3 is a schematic flowchart of another method for determining partial antenna coherent transmission codewords provided by an embodiment of the present application. The implementation of the method for determining the partial antenna coherent transmission codeword is a communication device. As shown in Figure 3, the method may include but is not limited to the following steps:

S31. Determine the first codeword of antenna fully coherent transmission of the L layer of the N antenna port corresponding to the MIMO uplink transmission.

Among them, L is a positive integer, and L is less than or equal to N. N is a positive integer power of 2 and N is greater than 4.

In this application, the method for determining the first codeword of the N antenna port is not limited and can be determined according to actual conditions. For the determination process of the first codeword of the antenna fully coherent transmission at the L layer of the N antenna port, please refer to the relevant records in the above embodiments, and will not be described again here.

S32: Group N antenna ports to obtain M antenna port groups.

Partial antenna coherent transmission can divide all N antenna ports into multiple antenna port groups, and the antenna ports in the group are orthogonal to each other. That is to say, the data transmitted by some layers is only mapped to one antenna port group, and the data transmitted by other layers is only mapped to other antenna port groups, and each part of the transmission layer has a one-to-one correspondence with each antenna port group. In the embodiment of the present application, all antenna ports can be grouped to obtain M antenna port groups for fully coherent transmission of all antenna ports in the group, where M is a positive integer less than N.

Optionally, the N antenna ports may be evenly distributed, or the N antenna ports may be non-uniformly distributed. Optionally, N antenna ports are sequentially or cyclically allocated to M antenna port groups; or the transmission coherence between the N antenna ports is determined, and based on the transmission coherence between the N antenna ports, the N The antenna ports are assigned to M antenna port groups. Optionally, for multi-panel (MP) terminal equipment, all antenna ports on one antenna panel can be divided into one antenna port group, where the number of antenna panels is the number of antenna port groups. Optionally, transmission coherence between antenna panels on the terminal device is determined, and N antenna ports are allocated to M antenna port groups based on the transmission coherence between antenna panels.

For example, taking 8 antenna ports as an example for grouping explanation, the 8 antenna ports can be divided into 2 antenna port groups or 4 antenna port groups.

When 8 antenna ports are divided into 2 antenna port groups, one grouping method is: the first antenna port group is the 1st, 3rd, 5th, and 7th antenna ports, and the second antenna port group is the 2nd, 4th ,6,8 antenna ports. Another grouping method is: the first antenna port group is the 1st, 2nd, 3rd, and 4th antenna ports, and the second antenna port group is the 5th, 6th, 7th, and 8th antenna ports.

When 8 antenna ports are divided into 4 antenna port groups, one grouping method is: the first antenna port group is the 1st and 2nd antenna ports, the second antenna port group is the 3rd and 4th antenna ports, and the 2nd antenna port group is the 3rd and 4th antenna ports. The three antenna port groups are the 5th and 6th antenna ports, and the fourth antenna port group are the 7th and 8th antenna ports. Another grouping method is: the first antenna port group is the 1st and 3rd antenna ports, the second antenna port group is the 2nd and 4th antenna ports, the third antenna port group is the 5th and 7th antenna ports, and the fourth antenna port The group is the 6th and 8th antenna ports.

It should be noted that under different antenna port numbering rules, the number of the antenna port is different. For example, the antenna port can be numbered in binary mode, and the number can be 00, 01, 10..., although the number of the antenna port is different, the same The second codeword determination method provided by the embodiment of the present application can be used, and only the corresponding layer is mapped to the corresponding antenna port number.

S33: Split the first codeword into M sub-matrices according to M antenna port groups, where each antenna port group corresponds to one sub-matrix.

The first codeword W of fully coherent transmission is divided into M submatrices according to M antenna port groups, namely W ₁ ,...,W _m ,...,W _M , where represents the mth antenna port The submatrix corresponding to the group is W _m . Alternatively, the ports included in the antenna port group may be called target ports in the group, each row of the first codeword W corresponds to one port, and the nth row corresponds to the nth port. In the embodiment of the present application, the row corresponding to the target port in the antenna port group can be selected from the first codeword W to generate a sub-matrix of the antenna port group. For example, the antenna port group includes port 1, port 2, port 3, and port 4. Select the first row corresponding to port 1, the second row corresponding to port 2, and the third row corresponding to port 3 from the first codeword W. The 4th row corresponding to port 4 generates the sub-matrix of the antenna port group based on the 1st, 2nd, 3rd and 4th rows.

Taking 8 antenna ports as an example, the following explains the process of splitting the first codeword into sub-matrices:

In this disclosure, the first codeword of fully coherent antenna transmission is the codeword of the existing Type I SP downlink 8Tx antenna fully coherent transmission.

The 8 antenna ports are divided into 2 antenna port groups (1, 2, 3, 4) and (5, 6, 7, 8). The first codeword W of the fully coherent antenna is divided into 2 antenna port groups. Two sub-matrices, that is, select the 1st, 2nd, 3rd, and 4th rows in the first codeword W to generate the submatrix W ₁ corresponding to the antenna port group (1, 2, 3, 4); Select the 5th, 6th, 7th, and 8th rows in W to generate a submatrix W ₂ corresponding to the antenna port group (5, 6, 7, 8).

For another example, 8 antenna ports are divided into 2 antenna port groups (1, 3, 5, 7) and (2, 4, 6, 8). The first codeword W of the fully coherent antenna is divided into 2 antenna ports. The group is divided into two sub-matrices, that is, the 1st, 3rd, 5th, and 7th rows in the first codeword W are selected to generate the submatrix corresponding to the antenna port group (1,3,5,7) W ₁ ; select the 2nd, 4th, 6th, and 8th rows in W to generate the submatrix W ₂ corresponding to the antenna port group (2, 4, 6, 8).

For another example, 8 antenna ports are divided into 4 antenna port groups. The first antenna port group is the 1st and 2nd antenna ports, the second antenna port group is the 3rd and 4th antenna ports, and the third antenna port group is the 5th, 6 antenna ports, the fourth antenna port group is the 7th and 8th antenna ports. Correspondingly, W ₁ corresponding to the first antenna port group includes the 1st and 2nd rows in W; W ₂ corresponding to the second antenna port group includes the 3rd and 4th rows in W; the third antenna W ₃ corresponding to the port group includes the 5th and 6th rows in W; W ₄ corresponding to the fourth antenna port group includes the 7th and 8th rows in W.

S34: Determine the sparse matrix corresponding to the first codeword based on the M sub-matrices.

It should be noted that N antenna ports can support uplink transmission of L layer, where the number of transmission layers L is less than or equal to N, and different antenna ports can support different transmission layers. After all the antenna ports are divided into the first antenna port group and the second antenna port group, the orthogonality verification is performed on the sub-matrix corresponding to each antenna port group to determine the mutually orthogonal matrix corresponding to the antenna port group from the L layer. Target layer to achieve partially coherent transmission from the antenna. It should be noted that the data of the target layer is transmitted through the target port in the antenna port group.

In some implementations, the conjugate transposed sub-matrix of the sub-matrix corresponding to the antenna port group is determined, and the conjugate transposed sub-matrix and the sub-matrix are matrix multiplied to obtain the orthogonal verification matrix corresponding to the antenna port group. For example, for any sub-matrix W _m , obtain the conjugate transpose matrix of the sub-matrix W _m further, to Do matrix multiplication with W _m , that is An orthogonal verification matrix O is obtained, and the orthogonality of the transmission layer is verified on the orthogonal verification matrix O.

In the case where the 8 antenna ports are divided into 2 antenna port groups (1,2,3,4) and (5,6,7,8), the submatrices W ₁ and W ₂ are verified for orthogonality.

Further, according to whether the value of the matrix element in the orthogonal verification matrix is zero, the target layer corresponding to the antenna port group is determined from the L layer. Optionally, determine the value i of the row where the matrix element is located and the value j of the column where it is located, where i and j are both positive integers, and both i and j are greater than or equal to 1 and less than or equal to L. In the embodiment of the present disclosure, in response to the matrix element taking a value of zero, layer i and layer j are determined to be mutually orthogonal layers; or, in response to the matrix element taking a non-zero value, layer i and layer j are determined to be non-mutually orthogonal. layer.

For example, the elements in the p-th row and q-th column of the orthogonal verification matrix O are _op,q . When _op,q = 0, it means that the p-th layer and the q-th layer are orthogonal to each other. When _op,q ≠0, it means The p-th layer and the q-th layer are not orthogonal. After judging the orthogonality, each antenna port group selects mutually orthogonal layers. It should be noted that the set of layers selected by all antenna port groups is all layers, that is, the L layer; the layers selected by two antenna port groups do not overlap each other, that is, it is assumed that the set of layers corresponding to the m-th antenna port group is A _m , and the set of layers corresponding to the n-th antenna port group is A _n . When the m-th antenna port group and the n-th antenna port group are not the same antenna port group, A _m ∩A _n =φ, and A ₁ ∪A ₂ ∪...∪A _M =A, where A is the set of all layers.

In the case where 8 antenna ports are divided into 2 antenna port groups (1,2,3,4) and (5,6,7,8), the (1,2,3,4) layers are orthogonal to each other, Layers (5, 6, 7, 8) are orthogonal to each other, that is, data from layers 1 to 4 are transmitted in the first antenna port group (1, 2, 3, 4), and data from layers 5 to 8 are transmitted in the second antenna port group (1, 2, 3, 4). Transmit within the antenna port group (5,6,7,8).

It should be noted that the number of target layers corresponding to different antenna port groups is different. In this disclosure, the determination can be based on the number N of antenna ports and the number M of antenna port groups. Optionally, modulus values of N and M are determined, and based on the modulus values, the number of target layers for each of the M antenna port groups is determined. In response to the modulus values of N and M being zero, it is determined that the number of target layers corresponding to each antenna port group is L/M. In response to the modulus values of N and M being non-zero, it is determined that the number of antenna port groups corresponding to the modulus value The number of target layers is The number of target layers corresponding to the remaining antenna port groups is That is to say, when a=mod(L,M)=0, the number of target layers corresponding to all antenna port groups is layer. When a=mod(L,M)≠0, then the number of target layers corresponding to each antenna port group in a antenna port group is layer, that is, pair Rounded up. The number of target layers corresponding to each port group of the remaining Ma antenna port groups is layer, that is, pair Round down.

For example, L=7, M=4, a=mod(7,4)=3≠0, then each of the 3 antenna port groups corresponds to 2 layers, and 1 antenna port group corresponds to 1 layer.

Further, a sparse matrix corresponding to the first codeword is determined according to the target layer and target port corresponding to each antenna port group. In some implementations, the first matrix element corresponding to the target layer transmitted by the target port in each antenna port group and the second matrix element corresponding to the remaining layer are determined, and the value of the first matrix element corresponding to each antenna port group is determined. is a first value, for example, "1", and the value of the remaining second matrix element is a second value, for example, "0", so that the sparse matrix of the first codeword can be determined.

Continuing to take the above example as an example, the sparse matrix can be obtained as follows:

S35. Based on the first codeword and the corresponding sparse matrix, determine the second codeword for partial antenna coherent transmission of the L layer of the N antenna port.

Optionally, perform Hadamard operation on the first codeword and the sparse matrix corresponding to the first codeword to obtain the second codeword corresponding to the first codeword, that is, W _p =W⊙S, where W _P is The second codeword, W is the first codeword, and S is a sparse matrix. It should be noted that there are multiple first codewords for N antenna ports, and the corresponding sparse matrix can be obtained for each first codeword according to the above implementation. That is to say, each first codeword corresponds to at least one first codeword. Two code words.

Optionally, after acquiring the second codeword, determine the normalization coefficient of the second codeword, and perform energy normalization processing on the second codeword based on the normalization coefficient. To obtain the second codeword of the normalized partial antenna coherent transmission. Optionally, the normalization coefficient corresponding to the second codeword can be set to be related to the number of non-zero elements. For example, if the number of non-zero elements of the codeword is K, then the normalization coefficient corresponding to the second codeword is Optionally, the normalization coefficient corresponding to the second codeword can be set as For example, when N=8, L=8, M=2, the normalization coefficient corresponding to the second codeword is

In the embodiment of the present application, the first codeword of the fully coherent antenna transmission of the N antenna port corresponding to the MIMO uplink transmission is determined. Based on the first codeword of the N antenna port and the sparse matrix corresponding to the first codeword, the N antenna port can be determined The second codeword transmitted coherently by some antennas of the L layer. In the embodiment of this application, some antenna coherent transmission codewords can be designed based on the antenna fully coherent transmission codewords, so that MIMO uplink can support the transmission requirements of layer 1 to layer 8 of 8 antenna ports, thereby further enhancing the uplink MIMO technology.

The method for determining the partial antenna coherent transmission codeword provided by the above embodiment can be applied to terminal equipment and network equipment, and after the partial antenna coherent transmission second codeword is determined, the partial antenna coherent transmission second codeword can be determined based on the partial antenna coherent transmission second codeword. Precoding codebook, terminal equipment and network equipment can perform (Physical Uplink Shared Channel, PUSCH) transmission based on the precoding codebook.

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

Please refer to Figure 4. Figure 4 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 4, the method may include but is not limited to the following steps:

S41. Receive the 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 precoding matrix indication (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, the precoding matrix indicator (Transmit Precoding Matrix Indicator, TPMI) is used to indicate a target codeword in the precoding matrix.

S42: Based on the precoding matrix indication information, determine the target codeword corresponding to the uplink transmission from the precoding codebook of the L layer of the N antenna port corresponding to the MIMO uplink 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 L layer of the N antenna port corresponding to the MIMO uplink transmission based on TPMI. It should be noted that the precoding codebook corresponding to MIMO uplink transmission includes the first codeword of the antenna fully coherent transmission based on the N antenna port in the above embodiment, and determines the first codeword of the partial antenna coherent transmission of the L layer of the N antenna port. Two code words. Regarding the process of determining the second codeword for coherent transmission by partial antennas of the L layer of the N antenna port, 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.

S43: 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 the present 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 L layer of the N antenna port corresponding to the MIMO uplink transmission. , precode the PUSCH based on the target codeword and send it to the network device. Some antenna coherent transmission codewords can be designed based on the fully coherent transmission codewords of all antennas. MIMO uplink supports the transmission requirements of 8 antenna ports from layer 1 to layer 8, thus further improving the Uplink MIMO technology is further enhanced.

Please refer to Figure 5. Figure 5 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 5, the method may include but is not limited to the following steps:

S51, 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 L layer of the N antenna port corresponding to the MIMO uplink 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 evaluated channel condition, and send it to the terminal device. TPMI. 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 MIMO uplink transmission includes the first codeword of the antenna fully coherent transmission based on the N antenna port in the above embodiment, and determines the first codeword of the partial antenna coherent transmission of the L layer of the N antenna port. Two code words. Regarding the process of determining the second codeword for coherent transmission by partial antennas of the L layer of the N antenna port, please refer to the relevant content in the above embodiments and will not be described again here.

S52: 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 uplink transmission corresponding to the precoding codebook of the L layer of the N antenna port corresponding to the MIMO uplink transmission. target codeword, and receives the PUSCH transmission sent by the terminal device, where the PUSCH transmission is precoded by the terminal device based on the target codeword. Some antenna coherent transmission codewords can be designed based on the fully coherent transmission codewords of all antennas. MIMO uplink supports the transmission requirements of layer 1 to layer 8 of 8 antenna ports, thereby further enhancing the 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, network equipment and terminal equipment may include hardware structures and software modules to implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. 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. 6 , which is a schematic structural diagram of a communication device 60 provided by an embodiment of the present application. The communication device 60 shown in FIG. 6 may include a transceiver module 61 and a processing module 62. The transceiving module 61 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 61 may implement the sending function and/or the receiving function.

The communication device 60 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 60 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 communication device 60 includes: a processing module 62;

The processing module 62 is configured to: determine the first codeword of the antenna fully coherent transmission of the L layer of the N antenna port corresponding to the multiple-input multiple-output MIMO uplink transmission, where the L is a positive integer, and the L is less than or equal to the N ; Based on the first codeword of fully coherent transmission by the antenna, determine the sparse matrix corresponding to the first codeword; determine the L layer of the N antenna port based on the first codeword and the corresponding sparse matrix. The second codeword of the partial antenna coherent transmission.

Optionally, the processing module 62 is also configured to: group the N antenna ports to obtain M antenna port groups, where M is a positive integer less than N; group all the antenna port groups according to the M antenna port groups. The first codeword is split into M sub-matrices, where each antenna port group corresponds to one sub-matrix; based on the M sub-matrices, a sparse matrix corresponding to the first codeword is determined.

Optionally, the processing module 62 is also configured to perform orthogonality verification on the sub-matrix corresponding to each of the antenna port groups, so as to determine the mutually orthogonal targets corresponding to the antenna port groups from the L layer. layer, wherein the data of the target layer is transmitted through the target port in the antenna port group; according to the target layer and the target port corresponding to each of the antenna port groups, it is determined that the first codeword corresponds to of sparse matrices.

Optionally, the processing module 62 is also configured to: determine the first matrix element corresponding to the target layer transmitted by the target port in each of the antenna port groups and the second matrix element corresponding to the remaining layer;

The first matrix element corresponding to each antenna port group is determined to be a first value and the second matrix element is a second value to determine the sparse matrix of the first codeword.

Optionally, the processing module 62 is also configured to: determine the conjugate transpose sub-matrix of the sub-matrix corresponding to the antenna port group;

Perform matrix multiplication on the conjugate transpose sub-matrix and the sub-matrix to obtain an orthogonal verification matrix corresponding to the antenna port group;

The target layer corresponding to the antenna port group is determined from the L layer according to whether the value of the matrix element in the orthogonal verification matrix is zero.

Optionally, the processing module 62 is also used to: determine the value i of the row where the matrix element is located and the value j of the column where the matrix element is located, where the i and j are positive integers, and both i and j are greater than or Equal to 1 and less than or equal to L;

In response to the matrix element taking a value of zero, the i layer and the j layer are determined to be mutually orthogonal layers; or,

In response to the matrix element taking a non-zero value, it is determined that the i layer and the j layer are non-mutually orthogonal layers.

Optionally, the processing module is further configured to perform a Hadamard operation on the first codeword and the corresponding sparse matrix to obtain a second codeword corresponding to the first codeword.

Optionally, the processing module 62 is further configured to: determine the modulus values of N and M; and determine the number of target layers for each of the M antenna port groups based on the modulus values.

Optionally, the processing module is further configured to: in response to the modulus value being zero, determine the number of target layers corresponding to each of the antenna port groups as In response to the modulus value being non-zero, it is determined that the number of target layers corresponding to the antenna port groups of the modulus value is The number of target layers corresponding to the remaining antenna port groups is

Optionally, the processing module 62 is also configured to determine the normalization coefficient of the second codeword, and perform normalization processing on the second codeword based on the normalization coefficient.

In the embodiment of the present application, the first codeword of the fully coherent antenna transmission of the N antenna port corresponding to the MIMO uplink transmission is determined. Based on the first codeword of the N antenna port and the sparse matrix corresponding to the first codeword, the N antenna port can be determined The second codeword transmitted coherently by some antennas of the L layer. In the embodiment of this application, some antenna coherent transmission codewords can be designed based on the antenna fully coherent transmission codeword, which can enable MIMO uplink to support the transmission requirements of layer 1 to layer 8 of 8 antenna ports, thereby further enhancing the uplink MIMO technology.

Please refer to FIG. 7 , which is a schematic structural diagram of another communication device 70 provided by an embodiment of the present application. The communication device 70 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 70 may include one or more processors 71. The processor 71 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 70 may also include one or more memories 72, on which a computer program 73 may be stored. The processor 71 executes the computer program 73, so that the communication device 70 performs the steps described in the above method embodiment. method. Optionally, the memory 72 may also store data. The communication device 70 and the memory 72 can be provided separately or integrated together.

Optionally, the communication device 70 may also include a transceiver 74 and an antenna 75 . The transceiver 74 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 74 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 70 may also include one or more interface circuits 76. The interface circuit 76 is used to receive code instructions and transmit them to the processor 71 . The processor 71 executes the code instructions to cause the communication device 70 to perform the method described in the above method embodiment.

In one implementation, the processor 71 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 71 may store a computer program 73, and the computer program 73 runs on the processor 71, causing the communication device 70 to perform the method described in the above method embodiment. The computer program 73 may be solidified in the processor 71, in which case the processor 71 may be implemented by hardware.

In one implementation, the communication device 70 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 (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), 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 a terminal 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. 7 . 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. 8 . The chip 80 shown in FIG. 8 includes a processor 81 and an interface 82. The number of processors 81 may be one or more, and the number of interfaces 82 may be multiple.

Processor 81, configured to: determine the first codeword of antenna fully coherent transmission of the L layer of N antenna ports corresponding to multiple-input multiple-output MIMO uplink transmission, where the L is a positive integer, and the L is less than or equal to the N ; Based on the first codeword of fully coherent transmission by the antenna, determine the sparse matrix corresponding to the first codeword; determine the L layer of the N antenna port based on the first codeword and the corresponding sparse matrix. The second codeword of the partial antenna coherent transmission.

Optionally, the processor 81 is also configured to: group the N antenna ports to obtain M antenna port groups, where M is a positive integer less than N; group all the antenna port groups according to the M antenna ports. The first codeword is split into M sub-matrices, where each antenna port group corresponds to one sub-matrix; based on the M sub-matrices, a sparse matrix corresponding to the first codeword is determined.

Optionally, the processor 81 is also configured to perform orthogonality verification on the sub-matrix corresponding to each of the antenna port groups, so as to determine the mutually orthogonal targets corresponding to the antenna port groups from the L layer. layer, wherein the data of the target layer is transmitted through the target port in the antenna port group; according to the target layer and the target port corresponding to each of the antenna port groups, it is determined that the first codeword corresponds to of sparse matrices.

Optionally, the processor 81 is further configured to: determine the first matrix element corresponding to the target layer transmitted by the target port in each of the antenna port groups and the second matrix element corresponding to the remaining layer; determine each The first matrix element corresponding to the antenna port group is a first value and the second matrix element is a second value to determine the sparse matrix of the first codeword.

Optionally, the processor 81 is also configured to: determine the conjugate transposed sub-matrix of the sub-matrix corresponding to the antenna port group;

Perform matrix multiplication of the conjugate transpose sub-matrix and the sub-matrix to obtain the orthogonal verification matrix corresponding to the antenna port group; according to whether the value of the matrix element in the orthogonal verification matrix is zero, from The target layer corresponding to the antenna port group is determined in the L layer.

Optionally, the processor 81 is also configured to: determine the value i of the row where the matrix element is located and the value j of the column where the matrix element is located, where the i and j are positive integers, and both i and j are greater than or Equal to 1 and less than or equal to L;

In response to the matrix element taking a value of zero, the i layer and the j layer are determined to be mutually orthogonal layers; or,

In response to the matrix element taking a non-zero value, it is determined that the i layer and the j layer are non-mutually orthogonal layers.

Optionally, the processor 81 is also configured to perform a Hadamard operation on the first codeword and the corresponding sparse matrix to obtain a second codeword corresponding to the first codeword.

Optionally, the processor 81 is further configured to: determine the modulus values of N and M; and determine the number of target layers for each of the M antenna port groups based on the modulus values.

Optionally, the processor 81 is further configured to: in response to the modulus value being zero, determine the number of target layers corresponding to each of the antenna port groups as In response to the modulus value being non-zero, it is determined that the number of target layers corresponding to the antenna port groups of the modulus value is The number of target layers corresponding to the remaining antenna port groups is

Optionally, the processor 81 is also configured to determine the normalization coefficient of the second codeword, and perform normalization processing on the second codeword based on the normalization coefficient.

Optionally, the chip also includes a memory 83, which is used to store 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 system for determining the side link duration. The system includes a communication device as a terminal device and a communication device as a network device in the embodiment of FIG. 6, or the system includes a communication device as in the embodiment of FIG. 7. A communication device as a terminal device and a communication device as a network device.

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 available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media (eg, solid state disk, 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 (14)

1. A method for determining a partial antenna coherent transmission codeword, the method comprising:

   determining a first codeword of antenna full coherence transmission of an L layer of an N antenna port corresponding to MIMO uplink transmission, wherein L is a positive integer, and L is smaller than or equal to N;

   determining a sparse matrix corresponding to a first codeword based on the first codeword of the antenna full-coherent transmission;

   and determining a second codeword of the partial antenna coherent transmission of the L layer of the N antenna ports according to the first codeword and the corresponding sparse matrix.
2. The method of claim 1, wherein the determining the sparse matrix corresponding to the first codeword based on the first codeword for the antenna full coherent transmission comprises:

   grouping N antenna ports to obtain M antenna port groups, wherein M is a positive integer smaller than N;

   splitting the first codeword into M sub-matrices according to M antenna port groups, where each antenna port group corresponds to one sub-matrix;

   and determining a sparse matrix corresponding to the first codeword according to the M submatrices.
3. The method of claim 2, wherein said determining said sparse matrix from M of said sub-matrices comprises:

   Performing orthogonality verification on the sub-matrix corresponding to each antenna port group, so as to determine mutually orthogonal target layers corresponding to the antenna port groups from the L layers, wherein data of the target layers are transmitted through target ports in the antenna port groups;

   and determining a sparse matrix corresponding to the first codeword according to the target layer and the target ports corresponding to each antenna port group.
4. The method of claim 3, wherein the determining the sparse matrix corresponding to the first codeword based on the target layer and the target ports corresponding to each of the antenna port groups comprises:

   determining a first matrix element corresponding to the target layer and a second matrix element corresponding to the residual layer, which are transmitted by a target port in each antenna port group;

   and determining that the first matrix element corresponding to each antenna port group is a first numerical value and the second matrix element corresponding to each antenna port group is a second numerical value so as to determine a sparse matrix of the first codeword.
5. The method of claim 3, wherein said performing orthogonality verification on the sub-matrix corresponding to each of the antenna port groups to determine mutually orthogonal target layers corresponding to the antenna port groups from the L layers comprises:

   Determining a conjugate transpose submatrix of the submatrix corresponding to the antenna port group;

   performing matrix multiplication on the conjugate transpose submatrix and the submatrix to obtain an orthogonal verification matrix corresponding to the antenna port group;

   and determining the target layer corresponding to the antenna port group from the L layers according to whether the value of the matrix element in the orthogonal verification matrix is zero.
6. The method of claim 5, wherein determining the target layer corresponding to the antenna port group from the L layers according to whether the value of the matrix element in the orthogonal validation matrix is zero, comprises:

   determining a value i of a row where the matrix element is located and a value j of a column where the matrix element is located, wherein i and j are positive integers, and both i and j are greater than or equal to 1 and less than or equal to L;

   determining that the i layer and the j layer are mutually orthogonal layers in response to the matrix element value being zero; or,

   and determining that the i layer and the j layer are non-mutually orthogonal layers in response to the matrix element value being non-zero.
7. The method according to any of claims 1-6, wherein said determining a second codeword for a partial antenna coherent transmission of the N antenna port L layer from the first codeword and the corresponding sparse matrix comprises:

   And carrying out Hadamard operation on the first codeword and the corresponding sparse matrix to obtain a second codeword corresponding to the first codeword.
8. The method according to any one of claims 3-6, wherein the determining the number of target layers corresponding to the antenna port group comprises:

   determining the modulus of the N and the M;

   and determining the number of the target layers of each of the M antenna port groups according to the modulus.
9. The method of claim 8, wherein the determining the number of target layers corresponding to the M antenna port groups according to the modulus value comprises:

   determining the number of the target layers corresponding to each antenna port group as follows in response to the modulus value being zero

   In response to the modulus value being non-zero, determining the number of target layers corresponding to the modulus value antenna port group asThe number of the target layers corresponding to the remaining antenna port groups is
10. The method of claim 1, wherein after determining the second codeword for the partial antenna coherent transmission of the N antenna port L layer, further comprising:

    and determining a normalization coefficient of the second codeword, and normalizing the second codeword based on the normalization coefficient.
11. A communication device, comprising:

    the processing module is used for determining a first codeword of antenna full coherence transmission of an L layer of an N antenna port corresponding to multi-input multi-output MIMO uplink transmission, wherein L is a positive integer, and L is smaller than or equal to N; determining a sparse matrix corresponding to a first codeword based on the first codeword of the antenna full-coherent transmission; and determining a second codeword of the partial antenna coherent transmission of the L layer of the N antenna ports according to the first codeword and the corresponding sparse matrix.
12. A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any of claims 1 to 10.
13. A communication device, comprising: a processor and interface circuit;

    the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

    the processor for executing the code instructions to perform the method of any one of claims 1 to 10.
14. A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 10 to be implemented.