CN117643135A

CN117643135A - Method and device for determining antenna full-coherence transmission code word of uplink MIMO transmission

Info

Publication number: CN117643135A
Application number: CN202280002110.4A
Authority: CN
Inventors: 张振宇; 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2024-03-01
Also published as: WO2024000179A1

Abstract

The embodiment of the application discloses a method and a device for determining antenna full coherence transmission code words of uplink MIMO transmission, which can be applied to a communication system, wherein the method comprises the following steps: determining candidate codewords of the antenna full coherent transmission of 4Tx or 2Tx of the uplink MIMO transmission; and determining a first codeword of antenna full coherent transmission of an 8Tx L layer of uplink MIMO transmission based on the candidate codeword, wherein L is a positive integer and is less than or equal to 8. According to the embodiment of the application, the antenna full-coherent transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

Description

Method and device for determining antenna full-coherence transmission code word of uplink MIMO transmission

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for determining an antenna full coherence transmission codeword for uplink MIMO transmission.

Background

Precoding technology in a multiple-input multiple-output (Multiple Input Multiple Output, MIMO) system can effectively reduce interference and overhead, and improve system capacity, and is an extremely important key technology in a MIMO system, and in a MIMO system based on codebook transmission, codebook design is also an important part of precoding technology. The number of maximum antenna ports supported by the existing uplink MIMO transmission antenna full-coherent transmission codeword is 4, that is, the existing uplink MIMO antenna full-coherent transmission codeword only supports transmission of maximum 4 layers of maximum 4 transmission antenna ports (Tx), and when the transmission antenna ports (Tx) of uplink MIMO transmission are enhanced, for example, the number of transmission antenna ports (8 Tx) is increased to 8, at this time, the transmission requirement of the enhanced antenna ports cannot be met.

Disclosure of Invention

The embodiment of the application provides a method and a device for determining antenna full-coherence transmission code words of uplink MIMO transmission, which construct antenna full-coherence transmission code words of high dimension 8Tx based on low dimension antenna full-coherence transmission code words, so that uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further uplink MIMO technology is further enhanced.

In a first aspect, an embodiment of the present application provides a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission, where the method includes:

determining candidate codewords of the antenna full coherent transmission of 4Tx or 2Tx of the uplink MIMO transmission;

and determining a first codeword of antenna full coherent transmission of an 8Tx L layer of the uplink MIMO transmission based on the candidate codeword, wherein L is less than or equal to 8.

In the embodiment of the application, a candidate codeword for full coherent transmission of an antenna of 4Tx or 2Tx for uplink MIMO transmission is determined, and a first codeword for full coherent transmission of an antenna of 8TxL layers is determined based on the 4Tx or 2Tx candidate codeword. According to the embodiment of the application, the antenna full-coherent transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

In a second aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing part or all of the functions of the terminal device in the method described in the first aspect, for example, a function of the communications device may be provided in some or all of the embodiments of the present application, or may be provided with a function of implementing any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of 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 communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions of the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may also include a memory module for coupling with the transceiver module and the processing module that holds the necessary computer programs and data for the communication device.

In a third aspect, embodiments of the present application provide a communications device comprising a processor, which when calling a computer program in memory, performs the method of the first aspect described above.

In a fourth aspect, embodiments of the present application provide a communication device comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In a fifth aspect, embodiments of the present application provide a communications device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the first aspect described above.

In a sixth aspect, an embodiment of the present invention provides a computer readable storage medium storing instructions for use by a terminal device as described above, which when executed, cause the terminal device to perform the method as described in the first aspect.

In a seventh aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In an eighth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a terminal device to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above method. In one possible design, the chip system further includes a memory for holding computer programs and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a ninth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flow chart of a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 3 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 4 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 5 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 6 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 7 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 8 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

Fig. 9 is a flowchart of another method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application;

fig. 10 is a flow chart of an uplink transmission method based on a codeword according to an embodiment of the present application;

fig. 11 is a flowchart of another uplink transmission method based on codewords according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

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

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of 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 indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or 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 in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. Depending on the context, the term "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" for purposes of brevity and ease of understanding, the terms "greater than" or "less than", "above" or "below" are used herein in characterizing the size relationship. But it will be appreciated by those skilled in the art that: the term "greater than" also encompasses the meaning of "greater than or equal to," less than "also encompasses the meaning of" less than or equal to "; the term "above" encompasses the meaning of "above and equal to" and "below" also encompasses the meaning of "below and equal to".

For ease of understanding, the terms referred to in this application are first introduced.

A physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) is used to carry data from the transmission channel PUSCH.

Coherent transmission is defined as a capability of a UE, which includes:

full coherent (Full coherent) transmission: all antenna ports can transmit coherently.

Partially coherent (Partial Coherence) transmission: the antenna ports within the same coherent transmission group may transmit coherently and the antenna ports within different coherent transmission groups may not transmit coherently, each coherent transmission group comprising at least two antenna ports.

Incoherent (Non coherent) transmission: no antenna ports can transmit coherently.

The method for determining the antenna full-coherence transmission codeword for uplink MIMO transmission disclosed in the embodiments of the present application determines the antenna full-coherence transmission codeword applicable to a communication system, and the communication system applicable to the embodiments of the present application is described below first.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one network device and one terminal device, and the number and form of devices shown in fig. 1 are only used as examples and not limiting to the embodiments of the present application, and may include two or more network devices and two or more terminal devices in practical applications. The communication system shown in fig. 1 is exemplified as including a network device 101 and a terminal device 102.

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

The network device 101 in the embodiment of the present application is an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, etc. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device. The network device provided in this embodiment of the present application may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the network device, for example, a base station, where functions of part of the protocol layers are placed in the CU for centralized control, and functions of part or all of the protocol layers are distributed in the DU for centralized control of the DU by the CU.

The terminal device 102 in this embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be an automobile with a communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

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

It may be understood that, the communication system described in the embodiments of the present application is for more clearly describing the technical solution of the embodiments of the present application, and is not limited to the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

It should be noted that, the method for determining the antenna full coherence transmission codeword for uplink MIMO transmission provided in any embodiment of the present application may be performed alone or in combination with possible implementation methods in other embodiments, and may also be performed in combination with any technical solution in the related art.

The method and apparatus for determining the antenna full coherence transmission codeword for uplink MIMO transmission provided in the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 2, the method may include, but is not limited to, the steps of:

s201, determining a candidate codeword for antenna full coherent transmission of 4 transmit antenna ports (Tx) or 2 transmit antenna ports (Tx) of uplink MIMO transmission.

With the enhancement of transmission requirements and transmission scenes, uplink transmission can support increased antenna ports and the number of uplink transmission layers, namely the number of antenna ports, can be increased from 4Tx to 8Tx at maximum, and correspondingly, the number of uplink transmission layers can be changed from 4 layers to L layers, for example, the value of L can be 1 to 8.

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

In the present application, the determination manner of the candidate codeword for full coherent transmission of the 4Tx and 2Tx antennas is not limited, and may be determined according to practical situations.

Alternatively, the candidate codeword of 4Tx may be a candidate codeword for full coherent transmission of the antenna of 4Tx based on a 4-dimensional orthogonal codebook, such as a kerdok Kerdock codebook; alternatively, the candidate codeword for 2Tx may be a candidate codeword for full coherent transmission of the 2Tx antenna based on a 2-dimensional orthogonal codebook, such as the kerdok Kerdock codebook. It should be noted that, the Kerdock codebook is an orthogonal codebook in the design of a communication system, and may be used to construct mutually unbiased base sequences. The Kerdock codebook has orthogonality, i.e., any two columns of vectors in each Kerdock codeword are orthogonal to each other.

Alternatively, the codeword may be transmitted fully coherently for the antennas in the precoding codebook of uplink MIIMO transmissions 4Tx and 2Tx agreed in the 3GPP communication protocol; alternatively, codewords in the precoding codebook of 4Tx and 2Tx may be transmitted for MIIMO downlink agreed in the 3GPP communication protocol.

That is, an uplink precoding codebook of uplink MIIMO transmission 4Tx agreed in the 3GPP communication protocol may be determined, and an antenna full coherence transmission codeword of 4Tx in the uplink precoding codebook may be determined as a candidate codeword of antenna full coherence transmission of 4Tx in the embodiment of the present application; alternatively, a downlink precoding codebook of downlink MIIMO transmission 4Tx agreed in the 3GPP communication protocol may be determined, and a 4Tx codeword in the downlink precoding codebook may be determined as a candidate codeword for antenna full coherence transmission of 4Tx in the embodiment of the present application.

Similarly, an uplink precoding codebook of uplink MIIMO transmission 2Tx agreed in the 3GPP communication protocol may be determined, and an antenna full coherence transmission codeword of 2Tx in the uplink precoding codebook may be determined as a candidate codeword of antenna full coherence transmission of 2Tx in the embodiment of the present application; or, a downlink precoding codebook of the downlink MIIMO transmission 2Tx agreed in the 3GPP communication protocol may be determined, and a 2Tx codeword in the downlink precoding codebook may be determined as a candidate codeword for full coherent transmission of the 2Tx antenna in the embodiment of the present application.

Alternatively, candidate codewords for full coherent transmission for pre-configured 4Tx and 2Tx antennas may be used.

S202, based on the 4Tx or 2Tx candidate codeword, a first codeword of antenna full coherent transmission of 8Tx L layer of uplink MIMO transmission is determined.

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

In this embodiment of the present application, a second codeword is determined from the 4Tx or 2Tx candidate codewords, and based on the determined second codeword, a first codeword for antenna full coherent transmission of the 8Tx L layer is determined, where data transmitted in each layer may be mapped to all antenna ports through the first codeword for antenna full coherent transmission.

In the case of the first codeword of the 8Tx L layer determined based on the candidate codeword of 4 Tx: and determining a second codeword from the 4Tx candidate codewords, and determining a third codeword corresponding to the second codeword, wherein the second codeword and the third codeword can be spliced to determine a first codeword of the antenna full coherent transmission of the 8Tx L layer. In order to ensure the full coherence of the transmission layer, it is necessary to design a co-phase coefficient for the splicing process, and splice the second codeword and the third codeword based on the co-phase coefficient to obtain the first codeword. The co-phasing coefficient may be determined based on co-phasing coefficient capabilities supported by the communication device and may include a phase angle ofFurthermore, more phase angles may be supported, for example, with an angular interval of 45 °, more phase angles being determined.

In some implementations, the first codeword of the antenna full coherent transmission of the 8Tx L layer may be obtained by stitching based on the co-phase coefficient and any codeword of 4 Tx.

In other implementations, the first codeword for antenna full coherent transmission for the 8Tx L layer may be obtained by stitching based on the co-phase coefficient and the two 4Tx codewords.

In still other implementations, two or more first codewords may be determined from the candidate codewords for 4Tx, and the determined two or more first codewords may be concatenated to generate a first codeword for the 8Tx L layer.

In the embodiment of the present application, when any codeword is not normalized, a normalization coefficient of any codeword may be determined, and energy normalization processing may be performed on any codeword based on the normalization coefficient. The energy normalization of codewords is equally applicable to the embodiments described below.

In the case of the first codeword of the 8Tx L layer determined based on the candidate codeword of 2 Tx: in this embodiment of the present application, designing a first codeword of antenna full coherent transmission of 8Tx based on a candidate codeword of antenna full coherent transmission of 2Tx requires presetting a co-phase coefficient matrix corresponding to design 2Tx, where the co-phase coefficient matrix is an orthogonal matrix. Further, based on determining the candidate codeword of the 2Tx 2 layer as the second codeword, and performing matrix point multiplication operation on the third co-phase coefficient matrix and the candidate codeword of the 2Tx 2 layer, that is, multiplying the coefficient in the co-phase coefficient matrix with the block matrix at the corresponding position in the codeword, to obtain the first codeword of the 8Tx L layer.

In the embodiment of the present application, a candidate codeword for full coherent transmission of an antenna of 4Tx or 2Tx corresponding to uplink MIMO transmission is determined, and based on the 4Tx or 2Tx candidate codeword, a first codeword for full coherent transmission of an antenna of 8TxL layers may be determined. According to the embodiment of the application, the antenna full-coherent transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 3, the method may include, but is not limited to, the steps of:

s301, determining candidate code words of the 4Tx antenna full coherent transmission of the uplink MIMO transmission.

For a specific description of step S301, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S302, determining a second codeword from the candidate codewords, and determining a third codeword corresponding to the second codeword.

S303, determining a co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain a first codeword.

As one possible implementation, determining 4TxThe candidate code word of the layer is a second code word, and the candidate code word of the layer is selected from the second code wordThe codewords of the layer generate third codewords.

As another possible implementation manner, the candidate codeword of the 4tx 4 layer is determined to be the second codeword, and the second codeword is determined to be the third codeword. Optionally, the candidate codeword of the 4Tx 4 layer is directly used as the third codeword, the first codeword of the 8Tx 8 layer is spliced, and the first codeword of the 8Tx L layer is selected. Optionally, when the number of transmission layers is 4-8, selecting the codeword of the L-4 layer from the second codeword according to the L layer, and generating a third codeword.

As yet another possible implementation, the determination of 4TxThe candidate codeword of the layer is the second codeword, and the 4Tx is determinedThe candidate codeword for the layer is the third codeword.

As yet another possible implementation manner, in the case that the number of transmission layers is 1+.l+.4, the candidate codeword of the 4Tx L layer is determined to be the second codeword, and the candidate codeword of the 4Tx L layer is directly determined to be the third codeword.

Under the condition that L is more than 4 and less than or equal to 8, a first cophasing coefficient matrix can be determined, two second code words are spliced in a row dimension to generate a first spliced code word, two third code words are spliced in the row dimension to generate a second spliced code word, further, the first spliced code word and the second spliced code word are spliced in a column dimension to generate a third spliced code word, and matrix point multiplication operation is performed on the first cophasing coefficient matrix and the third spliced code word to generate the first code word.

And under the condition that L is more than or equal to 1 and less than or equal to 4, determining a second co-phase coefficient matrix, and splicing two second code words in a row dimension to generate a fourth spliced code word, wherein one of the two second code words is a third code word, that is, the second code word is directly determined as the third code word. Further, matrix dot product operation is carried out on the second co-phase coefficient matrix and the fourth spliced codeword, and a first codeword is generated.

Referring to fig. 4, fig. 4 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 4, the method may include, but is not limited to, the steps of:

s401, determining candidate code words of the 4Tx antenna full coherent transmission of the uplink MIMO transmission.

For a specific description of step S401, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S402, determining 4TxThe candidate codeword of the layer is the second codeword and is selected fromSelecting from the second codewordThe codewords of the layer generate third codewords.

S403, determining the co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain a first codeword.

Optionally, any one of the 4Tx is determinedCandidate codewords for layer antenna full-coherent transmissionIs the second codeword and willAny of (3)Layer determination as third codewordFor example, can select the frontThe codewords of the layer generate third codewords.

Wherein 1 part,-1、 For co-phase coefficients, a first co-phase coefficient matrix may be determined as:or (b)

In this embodiment, after determining the second codeword and the third codeword, the two second codewords may be spliced in the row dimension to obtain a first spliced codeword, and the two third codewords may be spliced in the row dimension to obtain a second spliced codeword. Further, the first spliced code word and the second spliced code word are spliced in the row dimension to obtain a third spliced code word. In the embodiment of the application, a matrix dot product operation is performed on the first co-phasing coefficient matrix and the third spliced codeword to generate a first codeword of antenna full-coherent transmission of 8Tx L layers.

First codeword of antenna full coherent transmission of 8Tx L layer: w (W) _8,L May beOr (b)

For example, the candidate codeword for full coherent transmission of the antenna of l=7, 4tx 4 layers is the second codeword: wherein W 'is' _4,4 Is W _4,4 And (2) is a third codeword corresponding to the second codeword.

Wherein,the first codeword for the antenna full coherence transmission for 8tx 7 layers is:

When L is an odd number of layers, the second codeword is reserved in the I layer of the L layers selected in the order from the 1 st layer to the L layer (from front to back) or from the L layer to the 1 st layer (from back to front) based on the number of layers I of the second codeword, where the value of I is a positive integer less than or equal to 4. For example, when L is an odd number layer and the second codeword is a candidate codeword of 4Tx 4 layers, the codeword of the first 4 layers can be selected from front to back as the second codeword W _4,4 The remaining 3 layers are then determined by the third codeword, e.g., W 'can be used' _4,4 The first three columns or the last three columns of the group (a). Alternatively, the codeword of the 4 layers can be selected from the back to the front as the second codeword W _4,4 While the remaining 3 layers are determined by the third codeword, e.g., W 'can be used' _4,4 The first three columns or the last three columns of the group (a).

In the embodiment of the present application, a candidate codeword for full coherent transmission of an antenna of 4Tx corresponding to uplink MIMO transmission is determined, and based on the candidate codeword of 4Tx, a first codeword for full coherent transmission of an antenna of 8Tx L layer may be determined. According to the embodiment of the application, the antenna full-coherent transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

Referring to fig. 5, fig. 5 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 5, the method may include, but is not limited to, the steps of:

s501, determining a candidate codeword for full coherent transmission of the 4Tx antenna for uplink MIMO transmission.

For a specific description of step S501, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S502, determining the candidate code word of the 4Tx 4 layer as a second code word and determining the second code word as a third code word.

S503, determining a co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain a first codeword.

Optionally, determining the antenna full coherence transmission codeword of any 4tx 4 layer as the second codeword: w (W) _4,4 Wherein the third codeword is W _4,4 。

First codeword of antenna full coherent transmission of 8Tx L layer: w (W) _8,L May be W _8,8 A matrix of any L layers, such as the first L layers,or (b)From W _8,8 And selecting the first codeword of the antenna full coherent transmission of the 8Tx L layer formed by any L layers.

The antenna full coherent transmission codeword of the l=7, 4tx 4 layer is illustrated asThe third codeword is W _4,4 The method comprises the steps of carrying out a first treatment on the surface of the Wherein,the first codeword of the antenna full coherent transmission of 8tx 7 layer isThe matrix formed by any 7-column vector may be, for example, 1 st column to 7 th column.

As one possible implementation manner, when the transmission layer number 4 is less than or equal to L and less than or equal to 8, selecting the codeword of the L-4 layer from the second codeword according to the L layer, and generating a third codeword. That is to say from W _4,4 And selecting the code word of the L-4 layer to generate a third code word. For example, l=6, W can be selected _4,4 And (2) is a third codeword corresponding to the second codeword. For the splicing process of the second codeword and the third codeword, reference may be made to the description of the related content in the above embodiment, which is not repeated here.

When L is an odd number of layers, the second codeword is reserved in the I layer of the L layers selected in the order from the 1 st layer to the L layer (from front to back) or from the L layer to the 1 st layer (from back to front) based on the number of layers I of the second codeword, where the value of I is a positive integer less than or equal to 4.

In the embodiment of the present application, a candidate codeword for full coherent transmission of an antenna of 4Tx corresponding to uplink MIMO transmission is determined, and based on the candidate codeword of 4Tx, a first codeword for full coherent transmission of an antenna of 8TxL layers may be determined. According to the embodiment of the application, the antenna full-coherent transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

Referring to fig. 6, fig. 6 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 6, the method may include, but is not limited to, the steps of:

s601, determining a candidate codeword of the 4Tx antenna full coherent transmission of the uplink MIMO transmission.

For a specific description of step S601, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S602, determining 4TxThe candidate codeword of the layer is a second codeword and determines 4TxThe candidate codeword for the layer is the third codeword.

S603, determining a co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain a first codeword.

Optionally, any one of the 4Tx is selectedThe antenna full coherence transmission code word of the layer is a second code word:and selecting any one of the 4TxThe antenna full coherence transmission codeword of (a) is a third codeword:wherein 1 part,-1、 For co-phase coefficients, a first co-phase coefficient matrix may be determined as:or (b)

In this embodiment, after determining the second codeword and the third codeword, the process of splicing the second codeword and the third codeword may refer to the description of the related content in the foregoing embodiment, which is not repeated herein.

For example, l=7, and the antenna full coherent transmission codeword of the 4tx 4 layer is selected as the second codeword:and selecting the antenna full coherence transmission codeword of the 4Tx 3 layer as a third codeword:wherein,the first codeword of the antenna full coherent transmission of 8tx 7 layer isWhen L is an odd number of layers, the second codeword is reserved in the I layer of the L layers selected in the order from the 1 st layer to the L layer (from front to back) or from the L layer to the 1 st layer (from back to front) based on the number of layers I of the second codeword, where the value of I is a positive integer less than or equal to 4.

Referring to fig. 7, fig. 7 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 7, the method may include, but is not limited to, the steps of:

s701, determining a candidate codeword for full coherent transmission of the 4Tx antenna for uplink MIMO transmission.

For a specific description of step S701, reference may be made to the description of the related content in the above embodiment, which is not repeated here.

S702, when the transmission layer number 1 is less than or equal to L is less than or equal to 4, determining the candidate code word of the 4Tx L layer as a second code word, and determining the second code word as a third code word.

S703, determining a co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain a first codeword.

Optionally, determining the antenna full coherence transmission codeword of any one 4Tx L layer as the second codeword W _4,L The third codeword is W _4,L The method comprises the steps of carrying out a first treatment on the surface of the Wherein 1 part,For co-phasing coefficients, a second co-phasing coefficient matrix may be determined as:

in the embodiment of the present application, when L is 1-4, the second co-phase coefficient matrix is determined, and the second codeword and the third codeword are spliced in the row dimension to generate a fourth spliced codeword, that is, two second codewords are spliced to generate a fourth spliced codeword. And under the condition that L is more than or equal to 1 and less than or equal to 4, directly determining the second code word as a third code word, namely, one of the two second code words is the third code word. Further, matrix dot product operation is carried out on the second co-phase coefficient matrix and the fourth spliced codeword, and a first codeword is generated.

First codeword W of antenna full coherence transmission of 8Tx L layer _8,L May be

The antenna full coherent transmission codeword of the l=3, 4tx 3 layer is illustrated as the second codeword:the antenna full coherence transmission first codeword of 8tx 3 layer is:

Referring to fig. 8, fig. 8 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 8, the method may include, but is not limited to, the steps of:

s801, a candidate codeword for full coherent transmission of the 4Tx antenna for uplink MIMO transmission is determined.

For a specific description of step S801, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S802, two or more codewords are determined from the candidate codeword of 4 Tx.

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

Alternatively, 4 identical antenna full-coherent transmission codewords of 4Tx may be used for splicing to obtain a first codeword of 8Tx antenna full-coherent transmission, for example, 4 identical antenna full-coherent transmission codewords of 4Tx 4 layers may be spliced, and a first codeword of 8Tx 8 layer antenna full-coherent transmission may be spliced, i.e. one antenna full-coherent transmission codeword of 4Tx 4 layers may be placed on each of four corners, so that a first codeword of 8Tx 8 layer antenna full-coherent transmission may be obtained. For another example, the 4 identical antenna full coherence transmission codewords of 4tx 3 layers are spliced, so that a first codeword of 8tx 6 layers of antenna full coherence transmission can be spliced, that is, the antenna full coherence transmission codewords of 4tx 3 layers can be respectively placed at four corners, and then the first codeword of 8tx 6 layers of antenna full coherence transmission can be obtained.

Alternatively, a plurality of different low-dimensional antenna full-coherent transmission codewords may be used to construct the 8Tx codeword, for example, 2 or 3 or 4 different 4Tx antenna full-coherent transmission codewords are used to splice to obtain a first codeword of 8Tx antenna full-coherent transmission.

For example, an antenna full-coherent transmission codeword of layer 4Tx 1, an antenna full-coherent transmission codeword of layer 4Tx 2, an antenna full-coherent transmission codeword of layer 4Tx 3, and an antenna full-coherent transmission codeword of layer 4Tx 4 may be selected, and spliced to generate a first codeword of antenna full-coherent transmission of 8 Tx:

Referring to fig. 9, fig. 9 is a flowchart illustrating a method for determining an antenna full coherence transmission codeword for uplink MIMO transmission according to an embodiment of the present application. As shown in fig. 9, the method may include, but is not limited to, the steps of:

s901, determining a candidate codeword for full coherent transmission of an antenna of 2Tx for uplink MIMO transmission.

For a specific description of step S901, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S902, determining a third co-phase coefficient matrix of the candidate codeword of 2Tx, wherein the third co-phase coefficient matrix is an orthogonal matrix.

In order to support candidate codewords for 2 Tx-based antenna full-coherent transmission, a first codeword for 8 Tx-based antenna full-coherent transmission is constructed, and in this embodiment of the present application, a corresponding third co-phasing coefficient matrix needs to be designed, where the third co-phasing coefficient matrix needs to be an orthogonal matrix. For example, the third co-phasing coefficient matrix may be

S903, determining a candidate codeword of the 2Tx2 layer, and performing matrix point multiplication operation on the third co-phase coefficient matrix and the candidate codeword of the 2Tx2 layer to obtain a first codeword of the 8Tx L layer.

For example, the candidate codeword for antenna full coherent transmission of 2Tx2 layer isPerforming matrix point multiplication operation on the third co-phase coefficient matrix and the candidate code word of the 2Tx2 layer to obtain a first code word of the antenna full coherent transmission of the 8Tx L layer, namely the first code word of the 8TxL layer is

In this embodiment of the present application, a candidate codeword for full coherent transmission of an antenna of 2Tx corresponding to uplink MIMO transmission is determined, and based on the candidate codeword of 2Tx, a first codeword for full coherent transmission of an antenna of 8TxL layers may be determined. According to the embodiment of the application, the antenna full coherence transmission code word with the high dimensionality of 8Tx can be constructed based on the antenna full coherence transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of 8Tx, and further the uplink MIMO technology is further enhanced.

It should be noted that the foregoing embodiments may be implemented separately or in any combination. And the various embodiments described above may be performed by a network-side device (e.g., a base station). In one implementation, the foregoing embodiments are performed by a network-side device (e.g., a base station), and the network-side device (e.g., the base station) transmits the finally determined second codeword to the UE.

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

In other possible implementations, the foregoing embodiments may also be performed by each of the network-side device (e.g., a base station) and the user equipment UE.

The method for determining the antenna full-coherent transmission codeword provided in the above embodiment may be applicable to a terminal device and a network device, and after determining the first codeword for antenna full-coherent transmission, may determine a precoding codebook based on the first codeword, and the terminal device and the network device may perform transmission of a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) based on the precoding codebook.

The following explains the procedure of codebook-based uplink transmission (e.g., PUSCH transmission):

referring to fig. 10, fig. 10 is a flow chart of an uplink transmission method according to an embodiment of the present application. As shown in fig. 10, the method may include, but is not limited to, the steps of:

s1001, receiving precoding matrix indication information sent by a network device.

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

Wherein TPMI is used to indicate a target codeword in the precoding matrix.

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

It should be noted that, based on TPMI, the terminal device may determine, from the precoding codebook of the 8TxL layer corresponding to the uplink MIMO transmission, a target codeword corresponding to the uplink transmission. It should be noted that, in the precoding codebook corresponding to the uplink MIMO transmission, the first codeword for determining the antenna full coherence transmission in the above embodiment is included. For the procedure of determining the first codeword of the antenna full coherent transmission of the 8TxL layer, reference may be made to the description of the related content in the above embodiment, which is not repeated here.

The terminal device may determine a target codeword from the precoding codebook based on the TPMI. Alternatively, a mapping relationship between the codeword and the index may be preset, and the target codeword for uplink transmission may be determined from the precoding codebook according to the index.

S1003, precoding the PUSCH based on the target codeword and sending the PUSCH to the network equipment.

After the target codeword is obtained, the PUSCH may be precoded based on the target codeword, and the precoded PUSCH may be transmitted to the network device.

In the embodiment of the present application, precoding matrix indication information sent by a network device is received, and based on the precoding matrix indication information, a target codeword corresponding to uplink transmission is determined from a precoding codebook of an 8Tx L layer corresponding to uplink MIMO transmission, and PUSCH is precoded based on the target codeword and sent to the network device. According to the method, the device and the system, the antenna full-coherent transmission code word with the high dimensionality 8Tx is constructed based on the antenna full-coherent transmission code word with the low dimensionality, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of the 8Tx, and the uplink MIMO technology is further enhanced.

Referring to fig. 11, fig. 11 is a flow chart of an uplink transmission method provided in the embodiment of the present application. As shown in fig. 11, the method may include, but is not limited to, the steps of:

S1101, determining precoding matrix indication information, and sending the precoding matrix indication information to the terminal equipment to indicate the terminal equipment to determine a target codeword corresponding to uplink transmission from a precoding codebook of an 8Tx L layer corresponding to uplink MIMO transmission.

In the embodiment of the present application, the network device may receive a sounding reference signal (Sounding Reference Signals, SRS) resource sent by the terminal device, perform channel estimation based on the SRS resource, determine 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 an index of the codeword.

Note that, in the precoding codebook corresponding to the uplink MIMO transmission, the first codeword based on the 8Tx antenna full coherent transmission in the above embodiment is included. For the procedure of determining the first codeword of the antenna full coherent transmission of the 8Tx L layer, reference may be made to the description of the related contents in the above embodiment, and the description is omitted here.

S1102, receiving PUSCH transmission sent by a terminal device, where the PUSCH transmission is obtained by precoding based on a target codeword by the terminal device.

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

In the embodiment of the application, precoding matrix indication information is determined, and the precoding matrix indication information is sent to a terminal device, so that the terminal device is indicated to determine a target codeword corresponding to uplink transmission from a precoding codebook of an 8Tx L layer corresponding to uplink MIMO transmission, and receive PUSCH transmission sent by the terminal device, wherein the PUSCH transmission is obtained by precoding the terminal device based on the target codeword. In the embodiment of the present application, precoding matrix indication information sent by a network device is received, and based on the precoding matrix indication information, a target codeword corresponding to uplink transmission is determined from a precoding codebook of an 8Tx L layer corresponding to uplink MIMO transmission, and PUSCH is precoded based on the target codeword and sent to the network device. According to the method, the device and the system, the antenna full-coherence transmission code word of the high latitude 8Tx is built based on the antenna full-coherence transmission code word of the low latitude, so that the uplink MIMO can support the requirement of 1-layer to 8-layer transmission of the 8Tx, and the uplink MIMO technology is further enhanced.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the perspective of the network device and the terminal device, respectively. In order to implement the functions in the method provided in the embodiment of the present application, the network device and the first terminal device may include a hardware structure, a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

Fig. 12 is a schematic structural diagram of a communication device 120 according to 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 transceiver module 1201 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 1201 may implement the transmitting function and/or the receiving function.

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

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

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

Optionally, the processing module 1202 is further configured to determine a first co-phasing coefficient matrix when 4 < l+.8; splicing the two second code words in the row dimension to generate a first spliced code word; splicing the two third code words in the row dimension to generate a second spliced code word; splicing the first spliced code word and the second spliced code word in a column dimension to generate a third spliced code word; and performing matrix point multiplication operation on the first co-phase coefficient matrix and the third spliced codeword to generate the first codeword, wherein coefficients in the first co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the third spliced codeword.

Optionally, the processing module 1202 is further configured to determine a second co-phasing coefficient matrix when 1+.L+.4; splicing the two second code words in a row dimension to generate a fourth spliced code word, wherein one of the two second code words is the third code word; and performing matrix point multiplication operation on the second co-phase coefficient matrix and the fourth spliced codeword to generate the first codeword, wherein coefficients in the second co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the fourth spliced codeword.

Optionally, the processing module 1202 is further configured to determine 4TxThe candidate codeword of a layer is the second codeword; selecting from the second codewordAnd generating the third codeword by the codewords of the layer.

Optionally, the processing module 1202 is further configured to determine that the candidate codeword of the 4tx 4 layer is the second codeword; and determining the second codeword as the third codeword.

Optionally, the processing module 1202 is further configured to splice the second codeword and the third codeword to obtain the first codeword of 8tx 8 layers; and selecting an L-layer codeword from the 8Tx 8-layer first codeword, and generating the 8Tx L-layer first codeword.

Optionally, the processing module 1202 is further configured to determine that the candidate codeword of the 4tx 4 layer is the second codeword; and when the transmission layer number is more than or equal to 4 and less than or equal to 8, selecting a codeword of an L-4 layer from the second codeword according to the L layer to generate the third codeword.

Optionally, the processing module 1202 is further configured to determine 4TxThe candidate codeword of a layer is the second codeword; determining 4TxThe candidate codeword of a layer is the third codeword.

Optionally, the processing module 1202 is further configured to determine that the candidate codeword of the 4Tx L layer is determined to be the second codeword when the number of transmission layers 1+.l+.4; and determining the second codeword as the third codeword.

Optionally, the processing module 1202 is further configured to determine two or more codewords from the candidate codewords of 4 Tx; and determining the splicing positions of the two or more codewords, and splicing according to the splicing positions to generate a first codeword of the 8Tx L layer.

Optionally, the processing module 1202 is further configured to determine the co-phase coefficient based on a phase angle supported by the communication device.

Optionally, the processing module 1202 is further configured to determine a third co-phasing coefficient matrix of the candidate codeword of 2Tx, where the third co-phasing coefficient matrix is an orthogonal matrix; and determining the candidate code word of the 2Tx 2 layer, and performing matrix point multiplication operation on the third co-phase coefficient matrix and the candidate code word of the 2Tx 2 layer to obtain a first code word of the 8Tx L layer, wherein coefficients in the third co-phase coefficient matrix are multiplied by block matrices at corresponding positions in the candidate code word of the 2Tx 2 layer.

Optionally, the processing module 1202 is further configured to select, when the L is an odd layer, based on the number of layers I of the second codeword, an I layer in the L layers to reserve the second codeword according to an order from the 1 st layer to the L layer or from the L layer to the 1 st layer, where the value of I is a positive integer less than or equal to 4; and determining the code word of the residual layer as the third code word.

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

Referring to fig. 13, fig. 13 is a schematic structural diagram of another communication device 130 according to an embodiment of the present application. The communication device 130 may be a network device, a terminal device, a chip system, a processor, or the like that supports the network device to implement the above method, or a chip, a chip system, a processor, or the like that supports the terminal device to implement the above method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communications device 130 may include one or more processors 1301. Processor 1301 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

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

Optionally, the communication device 130 may also include a transceiver 1304, an antenna 1305. The transceiver 1304 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc. for implementing a transceiver function. The transceiver 1304 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 1306 may also be included in the communication device 130. Interface circuit 1306 is configured to receive code instructions and transmit them to processor 1301. Processor 1301 executes the code instructions to cause communication apparatus 130 to perform the method described in the method embodiments described above.

The communication device 130 is a terminal device for implementing the functions of the terminal device in the foregoing embodiments.

The communication means 130 is a network device for implementing the functions of the network device in the foregoing embodiments.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in processor 1301. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 1301 may store a computer program 1303, where the computer program 1303 runs on the processor 1301, and may cause the communication apparatus 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 circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal ox ide semiconductor, CMOS), N-type metal oxide 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 apparatus in the above embodiment description may be a network device or, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 13. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 14. The chip shown in fig. 14 includes a processor 1401 and an interface 1402. Wherein the number of processors 1401 may be one or more, and the number of interfaces 1402 may be a plurality.

A processor 1401 for determining candidate codewords for full coherent transmission of an antenna of 4Tx or 2Tx for uplink MIMO transmission; and determining a first codeword of antenna full coherent transmission of an 8Tx L layer of uplink MIMO transmission based on the candidate codeword, wherein L is a positive integer and is less than or equal to 8.

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

Optionally, the processor 1401 is further configured to determine a first co-phasing coefficient matrix when 4 < l.ltoreq.8; splicing the two second code words in the row dimension to generate a first spliced code word; splicing the two third code words in the row dimension to generate a second spliced code word; splicing the first spliced code word and the second spliced code word in a column dimension to generate a third spliced code word; and performing matrix point multiplication operation on the first co-phase coefficient matrix and the third spliced codeword to generate the first codeword, wherein coefficients in the first co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the third spliced codeword.

Optionally, the processor 1401 is further configured to determine a second co-phasing coefficient matrix when 1+.L+.4; splicing the two second code words in a row dimension to generate a fourth spliced code word, wherein one of the two second code words is the third code word; and performing matrix point multiplication operation on the second co-phase coefficient matrix and the fourth spliced codeword to generate the first codeword, wherein coefficients in the second co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the fourth spliced codeword.

Optionally, the processor 1401 is further configured to determine 4TxThe candidate codeword of a layer is the second codeword; selecting from the second codewordAnd generating the third codeword by the codewords of the layer.

Optionally, the processor 1401 is further configured to determine that the candidate codeword of the 4tx 4 layer is the second codeword; and determining the second codeword as the third codeword.

Optionally, the processor 1401 is further configured to splice the second codeword and the third codeword to obtain the first codeword of 8tx 8 layers; and selecting an L-layer codeword from the 8Tx 8-layer first codeword, and generating the 8Tx L-layer first codeword.

Optionally, the processor 1401 is further configured to determine that the candidate codeword of the 4tx 4 layer is the second codeword; and when the transmission layer number is more than or equal to 4 and less than or equal to 8, selecting a codeword of an L-4 layer from the second codeword according to the L layer to generate the third codeword.

Optionally, the processor 1401 is further configured to determine 4TxThe candidate codeword of a layer is the second codeword; determining 4TxThe candidate codeword of a layer is the third codeword.

Optionally, the processor 1401 is further configured to determine that the candidate codeword of the 4TxL layer is determined to be the second codeword when the number of transmission layers 1+.l+.4; and determining the second codeword as the third codeword.

Optionally, the processor 1401 is further configured to determine two or more codewords from the candidate codewords of 4 Tx; and determining the splicing positions of the two or more codewords, and splicing according to the splicing positions to generate a first codeword of the 8Tx L layer.

Optionally, the processor 1401 is further configured to determine the co-phase coefficient based on a phase angle supported by the communication device.

Optionally, the processor 1401 is further configured to determine a third co-phasing coefficient matrix of the candidate codeword of 2Tx, where the third co-phasing coefficient matrix is an orthogonal matrix; and determining the candidate code word of the 2Tx 2 layer, and performing matrix point multiplication operation on the third co-phase coefficient matrix and the candidate code word of the 2Tx 2 layer to obtain a first code word of the 8Tx L layer, wherein coefficients in the third co-phase coefficient matrix are multiplied by block matrices at corresponding positions in the candidate code word of the 2Tx 2 layer.

Optionally, the processor 1401 is further configured to select, when the L is an odd layer, based on the number of layers I of the second codeword, that the second codeword is retained by an I layer in the L layers in order from the 1 st layer to the L layer or from the L layer to the 1 st layer, where the value of I is a positive integer less than or equal to 4; and determining the code word of the residual layer as the third code word.

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

The chip 140 further comprises a memory 1403, the memory 1403 being for storing the necessary computer programs and data.

Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The embodiment of the application also provides a communication system, which comprises the communication device as the terminal equipment and the communication device as the network equipment in the embodiment of the foregoing fig. 8, or comprises the communication device as the terminal equipment and the communication device as the network equipment in the embodiment of the foregoing fig. 9.

The present application also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions described in accordance with embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. 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 an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in this application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features of the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationship shown in each table in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which are not limited in this application. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present application, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for determining an antenna full coherence transmission codeword for uplink MIMO transmission, the method comprising:

determining candidate codewords for antenna full-coherent transmission of a 4 transmit antenna port (Tx) or a 2 transmit antenna port (Tx) of an uplink MIMO transmission;

and determining a first codeword of antenna full coherent transmission of an 8Tx L layer of uplink MIMO transmission based on the candidate codeword, wherein L is a positive integer and is less than or equal to 8.
The method of claim 1, wherein in the case of 4Tx, the determining the first codeword for antenna full coherent transmission of the 8Tx L layer of the uplink MIMO transmission based on the candidate codeword comprises:

determining a second codeword from the candidate codewords, and determining a third codeword corresponding to the second codeword;

and determining a co-phase coefficient, and splicing the second codeword and the third codeword based on the co-phase coefficient to obtain the first codeword.
The method of claim 2, wherein the concatenating the second codeword and the third codeword based on the co-phase coefficient to obtain the first codeword comprises:

when L is more than 4 and less than or equal to 8, determining a first co-phase coefficient matrix;

Splicing the two second code words in the row dimension to generate a first spliced code word;

splicing the two third code words in the row dimension to generate a second spliced code word;

splicing the first spliced code word and the second spliced code word in a column dimension to generate a third spliced code word;

and performing matrix point multiplication operation on the first co-phase coefficient matrix and the third spliced codeword to generate the first codeword, wherein coefficients in the first co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the third spliced codeword.
The method of claim 2, wherein the concatenating the second codeword and the third codeword based on the co-phase coefficient to obtain the first codeword comprises:

when L is more than or equal to 1 and less than or equal to 4, determining a second co-phase coefficient matrix;

splicing the two second code words in a row dimension to generate a fourth spliced code word, wherein one of the two second code words is the third code word;

and performing matrix point multiplication operation on the second co-phase coefficient matrix and the fourth spliced codeword to generate the first codeword, wherein coefficients in the second co-phase coefficient matrix are multiplied by block matrices in corresponding positions in the fourth spliced codeword.
The method according to any of claims 2-4, wherein the determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword comprises:

determining 4TxThe candidate codeword of a layer is the second codeword;

selecting from the second codewordAnd generating the third codeword by the codewords of the layer.
The method according to any of claims 2-4, wherein the determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword comprises:

determining the candidate codeword of 4tx 4 layer as the second codeword;

and determining the second codeword as the third codeword.
The method of claim 6, wherein the method further comprises:

splicing the second codeword and the third codeword to obtain the first codeword of 8Tx8 layers;

and selecting an L-layer codeword from the first 8Tx 8-layer codeword, and generating the first 8Tx L-layer codeword.
The method of claim 6, wherein the determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword comprises:

Determining the candidate codeword of 4tx 4 layer as the second codeword;

and when the transmission layer number is more than or equal to 4 and less than or equal to 8, selecting a codeword of an L-4 layer from the second codeword according to the L layer to generate the third codeword.
The method according to any of claims 2-4, wherein the determining a second codeword from the candidate codewords and determining a third codeword corresponding to the second codeword comprises:

determining 4TxThe candidate codeword of a layer is the second codeword;

determining 4TxThe candidate codeword of a layer is the third codeword.
The method according to any of claims 2 or 4, wherein said determining a second codeword from said candidate codewords and determining a third codeword from said second codeword comprises:

when the transmission layer number is 1-4, determining the candidate code word of the 4TxL layer as the second code word;

and determining the second codeword as the third codeword.
The method according to claim 1, wherein the method further comprises:

determining two or more codewords from the candidate codewords of 4 Tx;

and determining the splicing positions of the two or more codewords, and splicing according to the splicing positions to generate a first codeword of the 8Tx L layer.
The method according to claim 2, wherein the method further comprises:

the co-phase coefficient is determined based on a phase angle supported by the communication device.
The method according to claim 2, wherein the method further comprises:

determining a third co-phase coefficient matrix of the candidate codeword of 2Tx, wherein the third co-phase coefficient matrix is an orthogonal matrix;

and determining the candidate code word of the 2Tx 2 layer, and performing matrix point multiplication operation on the third co-phase coefficient matrix and the candidate code word of the 2Tx 2 layer to obtain a first code word of the 8Tx L layer, wherein coefficients in the third co-phase coefficient matrix are multiplied by block matrices at corresponding positions in the candidate code word of the 2Tx 2 layer.
The method according to claim 2, wherein the method further comprises:

when the L is an odd number layer, selecting an I layer in the L layers from the 1 st layer to the L layer or from the L layer to the 1 st layer to reserve the second codeword based on the layer number I of the second codeword, wherein the value of the I is a positive integer less than or equal to 4;

and determining the code word of the residual layer as the third code word.
The method according to claim 1, wherein the method further comprises:

and determining a normalization coefficient of any codeword, and carrying out energy normalization processing on any codeword based on the normalization coefficient.
A communication device, comprising:

a processing module, configured to determine candidate codewords for full coherent transmission by an antenna of 4Tx or 2Tx for uplink MIMO transmission; and determining a first codeword of antenna full coherent transmission of an 8Tx L layer of uplink MIMO transmission based on the candidate codeword, wherein L is a positive integer and is less than or equal to 8.
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 15.
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 15.
A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 15 to be implemented.