A method and apparatus for PUSCH transmission in a node used for wireless communication

Abstract

The application discloses a method and device for PUSCH transmission in a node for wireless communication. The first node receives first signaling and transmits a first signal. The first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in a PUSCH, an antenna port for transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; the first SRS resource comprises K SRS ports, the K is a positive integer greater than 1; the first matrix is limited in a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to the K, and at most only one row in the n-th row and the m-th row of any matrix in the first matrix subset is a non-zero row, the n and the m are positive integers not greater than the K, and the n is not equal to the m. The above method fully utilizes the antenna port at the UE end and enhances the uplink transmission performance.

Description

A PUSCH transmission method and device in a node used for wireless communication

[0001] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on February 21, 2024, with application number 202410194570.2 and invention name “A PUSCH transmission method and device in a node used for wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a transmission scheme and apparatus for a PUSCH (Physical uplink shared channel) in a wireless communication system. Background Art

[0003] In 5G systems, as an evolution of MIMO (multi-input multi-output), the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #102 plenary meeting approved the new WI (Work Item) "NR MIMO Phase 5" for NR (New Radio) Release 19. One of the tasks includes developing codebook-based PUSCH transmission for 3-antenna ports without enhancing SRS resources. Summary of the Invention

[0004] In existing systems, when a base station schedules a codebook-based PUSCH transmission, the scheduling signaling indicates an SRS resource to determine the antenna port for transmitting the PUSCH. However, when the number of antenna ports for transmitting the PUSCH differs from the number of SRS ports supported by the existing system, how to perform codebook-based PUSCH transmission becomes a problem that needs to be solved.

[0005] In response to the above problems, the present application discloses a solution. It should be noted that in the description of the present application, although the NR (New Radio) system and 3-antenna port PUSCH transmission are used as examples, the present application is also applicable to other scenarios, including but not limited to the scenarios of the future 6G system, x-antenna port transmission (x is not equal to 3) and PUCCH / SRS transmission, etc., and achieves technical effects similar to the NR system and 3-antenna port PUSCH transmission. In addition, the use of a unified solution for different scenarios (including but not limited to NR system, future 6G system, 3-antenna port, x-antenna port (x is not equal to 3), PUSCH transmission, PUCCH / SRS transmission, etc.) also helps to reduce hardware complexity and cost. In the absence of conflict, the embodiments in the first node of the present application and the features in the embodiments can be applied to the second node, and vice versa. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0006] As an example, the interpretation of the terms in this application refers to the definitions of the 3GPP specification protocol TS38 series.

[0007] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0008] receiving first signaling, where the first signaling indicates a first SRS resource and a first matrix;

[0009] Sending a first signal, where the first signal is transmitted in a PUSCH, an antenna port for sending the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix;

[0010] The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0011] As an embodiment, the problem to be solved by the present application includes: how to perform codebook-based PUSCH transmission. In the above method, the first matrix used for precoding of the first signal is restricted to the first matrix subset, thereby solving this problem.

[0012] As an embodiment, the above method has the following benefits: fully utilizing the antenna port of the UE (User Equipment) end and enhancing the uplink transmission performance.

[0013] As an embodiment, the above method has the following advantages: avoiding the introduction of a new number of SRS ports, being simple to implement, and requiring only minor changes to the standard.

[0014] As an embodiment, the benefits of the above method include: good backward compatibility.

[0015] According to one aspect of the present application, it is characterized by comprising:

[0016] receiving first configuration information;

[0017] The first configuration information configures the first SRS resource.

[0018] According to one aspect of the present application, it is characterized by comprising:

[0019] receiving first configuration information;

[0020] The first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0021] As an embodiment, the benefits of the above method include good backward compatibility.

[0022] According to one aspect of the present application, it is characterized in that the first matrix subset depends on the first configuration information.

[0023] As an embodiment, the benefits of the above method include: flexible signaling design and better adaptability to different scenarios and different terminals.

[0024] As an embodiment, the above method has the following benefits: good forward compatibility.

[0025] According to one aspect of the present application, it is characterized in that the m is a default value.

[0026] As an embodiment, the benefits of the above method include: saving signaling overhead.

[0027] According to one aspect of the present application, it is characterized in that, only when the first node is configured with a first higher-layer parameter, the first matrix is ​​restricted to the first matrix subset.

[0028] According to one aspect of the present application, it is characterized in that the first matrix is ​​restricted to the first matrix subset only when the first node is configured with a first higher-layer parameter and the value of the first higher-layer parameter belongs to a first parameter value set.

[0029] As an embodiment, the benefits of the above method include: supporting different designs for different scenarios and different terminals, and optimizing the performance of different scenarios and different terminals respectively.

[0030] According to one aspect of the present application, it is characterized in that the transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

[0031] As an embodiment, the benefits of the above method include: supporting full-power transmission and improving the performance of uplink transmission.

[0032] According to one aspect of the present application, it is characterized in that the first node is user equipment.

[0033] According to one aspect of the present application, it is characterized in that the first node is a relay node.

[0034] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0035] Sending first signaling, where the first signaling indicates a first SRS resource and a first matrix;

[0036] receiving a first signal, where the first signal is transmitted in a PUSCH, an antenna port for transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix;

[0037] The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0038] According to one aspect of the present application, it is characterized by comprising:

[0039] Sending first configuration information;

[0040] The first configuration information configures the first SRS resource.

[0041] According to one aspect of the present application, it is characterized by comprising:

[0042] Sending first configuration information;

[0043] The first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0044] According to one aspect of the present application, it is characterized in that the first matrix subset depends on the first configuration information.

[0045] According to one aspect of the present application, it is characterized in that the m is a default value.

[0046] According to one aspect of the present application, it is characterized in that the first matrix is ​​restricted to the first matrix subset only when the sender of the first signal is configured with a first higher layer parameter.

[0047] According to one aspect of the present application, it is characterized in that the first matrix is ​​restricted to the first matrix subset only when the sender of the first signal is configured with a first higher-layer parameter and the value of the first higher-layer parameter belongs to a first parameter value set.

[0048] According to one aspect of the present application, it is characterized in that the transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

[0049] According to one aspect of the present application, it is characterized in that the second node is a base station.

[0050] According to one aspect of the present application, it is characterized in that the second node is user equipment.

[0051] According to one aspect of the present application, it is characterized in that the second node is a relay node.

[0052] The present application discloses a first node used for wireless communication, characterized by comprising:

[0053] A first receiver receives first signaling, where the first signaling indicates a first SRS resource and a first matrix;

[0054] A first transmitter sends a first signal, where the first signal is transmitted in a PUSCH, an antenna port for sending the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix;

[0055] The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0056] The present application discloses a second node used for wireless communication, characterized by comprising:

[0057] A second transmitter sends a first signaling, where the first signaling indicates a first SRS resource and a first matrix;

[0058] a second receiver, receiving a first signal, where the first signal is transmitted in a PUSCH, an antenna port for transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix;

[0059] The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0060] As an example, compared with traditional solutions, this application has the following advantages:

[0061] The antenna port on the UE side is fully utilized to enhance the uplink transmission performance.

[0062] This avoids introducing a new number of SRS ports, is simple to implement, and requires minimal changes to the standard.

[0063] Good backward compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0065] FIG1 shows a flowchart of first signaling and a first signal according to an embodiment of the present application;

[0066] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0067] FIG3 is a schematic diagram showing an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0068] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0069] FIG5 illustrates transmission between a first node and a second node according to an embodiment of the present application;

[0070] FIG6 shows a schematic diagram of a first matrix according to an embodiment of the present application;

[0071] FIG7 shows a schematic diagram of a first matrix subset according to an embodiment of the present application;

[0072] FIG8 shows a schematic diagram of a first matrix subset according to an embodiment of the present application;

[0073] FIG9 shows a schematic diagram of a first signal according to an embodiment of the present application;

[0074] FIG10 shows a schematic diagram of first configuration information according to an embodiment of the present application;

[0075] FIG11 is a schematic diagram showing first configuration information according to an embodiment of the present application;

[0076] FIG12 is a schematic diagram showing a first configuration information indicating a first matrix subset according to an embodiment of the present application;

[0077] FIG13 is a schematic diagram showing a first matrix being restricted within a first matrix subset according to an embodiment of the present application;

[0078] FIG14 shows a schematic diagram of first higher layer parameters according to one embodiment of the present application;

[0079] FIG15 shows a schematic diagram of first higher layer parameters according to one embodiment of the present application;

[0080] FIG16 shows a schematic diagram of a first power according to an embodiment of the present application;

[0081] FIG17 shows a schematic diagram for a first reference power according to an embodiment of the present application;

[0082] FIG18 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application;

[0083] FIG19 shows a structural block diagram of a processing device used in a second node according to an embodiment of the present application. DETAILED DESCRIPTION

[0084] The technical solution of this application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features within the embodiments of this application can be arbitrarily combined with each other. Based on considerations such as performance, flexibility, complexity, overhead, and compatibility, those skilled in the art are motivated to flexibly combine the embodiments in different drawings, such as, but not limited to, the embodiment in FIG1 and the embodiments in FIG5-18, the embodiment in FIG5 and the embodiments in FIG6-18, and so on.

[0085] Example 1

[0086] Embodiment 1 illustrates a flowchart of first signaling and a first signal according to an embodiment of the present application, as shown in FIG1 . In FIG1 , each block represents a step. In particular, the order of the steps in the blocks does not represent a specific temporal relationship between the steps.

[0087] In embodiment 1, the first node receives first signaling in step 101 and sends a first signal in step 102. The first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in a PUSCH, the antenna port transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, at most one of the nth and mth rows of any matrix in the first matrix subset is non-zero, n and m are positive integers not greater than K, and n is not equal to m.

[0088] As an embodiment, the first signaling includes physical layer signaling.

[0089] As an embodiment, the first signaling includes layer 1 (L1) signaling.

[0090] As an embodiment, the first signaling includes DCI (Downlink Control Information).

[0091] As an embodiment, the first signaling is a DCI.

[0092] As an embodiment, the first signaling is a DCI for uplink grant (UpLinkGrant).

[0093] As an embodiment, the CRC (Cyclic redundancy check) of the first signaling is scrambled by C (Cell)-RNTI (Radio Network Temporary Identifier).

[0094] As an embodiment, the CRC of the first signaling is scrambled by MCS (Modulation and Coding Scheme)-C-RNTI.

[0095] As an embodiment, the CRC of the first signaling is scrambled by CS (Configured Scheduling)-RNTI.

[0096] As an embodiment, the first signaling includes MACCE (Medium Access Control layer Control Element).

[0097] As an embodiment, the first signaling includes RRC (Radio Resource Control) signaling.

[0098] As an embodiment, the first signaling includes RRCIE (Information Element).

[0099] As an embodiment, the SRS refers to: Sounding reference signal.

[0100] As an embodiment, the first SRS resource is an SRSresource.

[0101] As an embodiment, the first SRS resource is identified by an SRS-ResourceId.

[0102] As an embodiment, the SRS resource includes an SRS port.

[0103] As an embodiment, the SRS resource includes an antenna port.

[0104] As an embodiment, the first SRS resource is configured with K SRS ports.

[0105] As an embodiment, the number of SRS ports included in the first SRS resource is equal to the K.

[0106] As an embodiment, the number of SRS ports configured for the first SRS resource is equal to K.

[0107] As an embodiment, the DCI domain SRS resource indicator in the first signaling indicates the first SRS resource.

[0108] As an embodiment, K is equal to 4.

[0109] As an embodiment, K is greater than 4.

[0110] As an embodiment, the K SRS ports are indexed sequentially.

[0111] As an embodiment, the first matrix is ​​a precoding matrix.

[0112] As an embodiment, the first matrix is ​​a matrix or a vector.

[0113] As an embodiment, the first matrix is ​​a matrix.

[0114] As an embodiment, the first matrix is ​​a vector.

[0115] As an embodiment, the first matrix is ​​a column vector.

[0116] As an embodiment, the number of rows of the first matrix is ​​equal to K.

[0117] As an embodiment, the number of columns of the first matrix is ​​greater than or equal to 1.

[0118] As an embodiment, the number of columns of the first matrix is ​​equal to 1.

[0119] As an embodiment, the number of columns of the first matrix is ​​greater than 1.

[0120] As an embodiment, the number of columns of the first matrix is ​​equal to the number of layers of the first signal.

[0121] As an embodiment, the number of columns of the first matrix is ​​a positive integer not greater than a first maximum number of layers, and the first maximum number of layers is configurable.

[0122] As an embodiment, the first maximum number of layers is equal to 3.

[0123] As an embodiment, the first maximum number of layers is a positive integer not greater than 3.

[0124] As an embodiment, the first maximum number of layers is configured by a higher layer parameter.

[0125] As an embodiment, the first maximum number of layers is configured by a higher layer parameter whose name includes "max" and "rank".

[0126] As an embodiment, the first maximum number of layers is configured by a higher layer parameter whose name includes "max" and "layer".

[0127] As an embodiment, the first maximum number of layers is configured by a higher layer parameter whose name includes "max", "MIMO" and "layer".

[0128] As an embodiment, the first maximum number of layers is configured by a serving cell of the first node.

[0129] As an embodiment, the number of columns of the first matrix is ​​a positive integer not greater than 3.

[0130] As an embodiment, the first signaling indicates the TPMI of the first matrix.

[0131] As an embodiment, the DCI field Precoding information and number of layers of the first signaling indicates the first matrix.

[0132] As an embodiment, the DCI field Precoding information and number of layers of the first signaling indicates the TPMI (Transmitted Precoding Matrix Indicator) of the first matrix.

[0133] As an embodiment, the first signaling indicates a number of layers and a TPMI, and the number of layers and the TPMI together indicate the first matrix.

[0134] As an embodiment, the layer refers to a MIMO (Multiple Input Multiple Output) layer.

[0135] As an embodiment, the layer refers to a transmission layer.

[0136] As an embodiment, the number of layers refers to a rank.

[0137] As an embodiment, the number of layers refers to a transmission rank.

[0138] As an embodiment, the PUSCH refers to: Physical Uplink Shared Channel.

[0139] As an embodiment, the first signal includes a baseband signal.

[0140] As an embodiment, the first signal includes a wireless signal.

[0141] As an embodiment, the first signal includes a radio frequency signal.

[0142] As an embodiment, the first signal is a PUSCH transmission based on a codebook.

[0143] As an embodiment, the number of layers of the first signal is a positive integer.

[0144] As an embodiment, the number of layers of the first signal is equal to 1.

[0145] As an embodiment, the number of layers of the first signal is greater than 1.

[0146] As an embodiment, the number of layers of the first signal is not greater than the first maximum number of layers.

[0147] As an embodiment, the first node is configured with a higher layer parameter "txConfig" set to "codebook".

[0148] As an embodiment, the first signaling schedules the first signal.

[0149] As an embodiment, the first signaling schedules the PUSCH carrying the first signal.

[0150] As an embodiment, the first signaling includes scheduling information of the first signal.

[0151] As an embodiment, the scheduling information of the first signal includes one or more of time domain resources, frequency domain resources, MCS (Modulation and coding scheme), DMRS port, HARQ (Hybrid Automatic Repeat request) process number, RV (Redundancy Version), NDI (New Data Indicator), TCI (Transmission configuration indicator) status or spatial relation.

[0152] As an embodiment, the first SRS resource is used to determine the antenna port for sending the first signal.

[0153] As an embodiment, the first node sends the first signal using the same antenna port as the SRS port of the first SRS resource.

[0154] As an embodiment, the first SRS resource is used to determine an uplink transmission spatial filter of the first signal.

[0155] As an embodiment, the first node uses the same uplink transmit spatial filter (UL Tx spatial filter) to transmit the first signal and to transmit the SRS in the first SRS resource.

[0156] As an embodiment, the antenna port for sending the first signal depends on the first SRS resource, which means that the first node sends the first signal using the same antenna port as the SRS port of the first SRS resource.

[0157] As an embodiment, the antenna port for sending the first signal depends on the first SRS resource, which means that the first SRS resource is used to determine the antenna port for sending the first signal.

[0158] As an embodiment, the antenna port for sending the first signal depends on the first SRS resource, which means that the first SRS resource is used to determine the uplink transmission spatial filter of the first signal.

[0159] As an embodiment, the precoding matrix of the first signal is the first matrix.

[0160] As an embodiment, the first matrix is ​​used for precoding of the first signal.

[0161] As an embodiment, the precoding of the first signal depends on the first matrix, which means that the precoding matrix of the first signal is the first matrix.

[0162] As an embodiment, the precoding of the first signal depends on the first matrix, which means that the first matrix is ​​used for precoding of the first signal.

[0163] As an embodiment, the first matrix subset includes multiple matrices.

[0164] As an embodiment, any matrix in the first matrix subset is a precoding matrix.

[0165] As an embodiment, the number of columns of any matrix in the first matrix subset is a positive integer not greater than a first maximum number of layers, and the first maximum number of layers is configurable.

[0166] As an embodiment, the number of columns of any matrix in the first matrix subset is no more than 3.

[0167] As an embodiment, there are two matrices in the first matrix subset with unequal numbers of columns.

[0168] As an embodiment, there are two matrices in the first matrix subset with the same number of columns.

[0169] As an embodiment, the first matrix subset is a subset of a candidate matrix set, the candidate matrix set includes multiple matrices, and the number of rows of each matrix in the candidate matrix set is equal to the K.

[0170] As an embodiment, the first matrix subset is a proper subset of the candidate matrix set.

[0171] As an embodiment, the number of columns of each matrix in the candidate matrix set is not greater than a first maximum number of layers, and the first maximum number of layers is configurable.

[0172] As an embodiment, each matrix in the candidate matrix set is a precoding matrix.

[0173] As an embodiment, the candidate matrix set depends on a higher-level parameter "codebookSubset".

[0174] As an embodiment, the candidate matrix set includes a precoding matrix for K antenna ports, a maximum rank equal to the first maximum number of layers, a higher-layer parameter including "ul-FullPowerTransmission" in the name is not configured or is configured as "fullpower", and a higher-layer parameter "codebookSubset" is configured as "nonCoherent"; the first maximum number of layers is configurable.

[0175] As a sub-embodiment of the above embodiment, the candidate matrix set consists of precoding matrices for K antenna ports, with a maximum rank equal to the first maximum number of layers, a higher-layer parameter including "ul-FullPowerTransmission" in the name is not configured or is configured as "fullpower", and a higher-layer parameter "codebookSubset" is configured as "nonCoherent".

[0176] As an embodiment, the first matrix subset is configurable.

[0177] As an embodiment, the first matrix subset is configured by higher layer signaling.

[0178] As an embodiment, the first matrix subset is configured for the first SRS resource.

[0179] As an embodiment, the first matrix subset is configured by higher layer signaling for configuring the first SRS resource.

[0180] As an embodiment, the first matrix subset is configured by the SRS-Resource configuration of the first SRS resource.

[0181] As an embodiment, the first signaling indicates the first matrix from the first matrix subset.

[0182] As an embodiment, the first node expects the first matrix to be a matrix in a subset of the first matrices.

[0183] As an embodiment, the first node expects the first signaling to indicate a matrix belonging to the first matrix subset.

[0184] As an embodiment, the first node expects the first signaling to indicate a precoding matrix belonging to the first matrix subset.

[0185] As an embodiment, the first node does not expect the first matrix not to belong to the first matrix subset.

[0186] As an embodiment, the first node does not expect the first signaling to indicate a matrix that does not belong to the first matrix subset.

[0187] As an embodiment, the first node does not expect the first signaling to indicate a precoding matrix that does not belong to the first matrix subset.

[0188] As an embodiment, if the first signaling indicates a precoding matrix that does not belong to the first matrix subset, the first node considers that an error has occurred.

[0189] As an embodiment, if the first signaling indicates a precoding matrix that does not belong to the first matrix subset, the first node ignores the first signaling.

[0190] As an embodiment, the first matrix being restricted to a first matrix subset means that candidates for the first matrix only include matrices in the first matrix subset.

[0191] As an embodiment, the first matrix being restricted to a first matrix subset means that candidates for the first matrix do not include matrices outside the first matrix subset.

[0192] As an embodiment, the first matrix being restricted within the first matrix subset means that the first matrix is ​​a matrix in the first matrix subset.

[0193] As an embodiment, the first matrix being restricted to a first matrix subset means that the first node expects the first matrix to be a matrix in the first matrix subset.

[0194] As an embodiment, the first matrix being restricted to a first matrix subset means that the first node does not expect the first signaling to indicate a precoding matrix that does not belong to the first matrix subset.

[0195] As an embodiment, the first matrix being restricted to a first matrix subset means that the first node expects the first signaling to indicate a precoding matrix belonging to the first matrix subset.

[0196] As an embodiment, the first matrix being restricted to a first matrix subset means that if the first matrix does not belong to the first matrix subset, the first node considers that an error occurs.

[0197] As an embodiment, the first matrix being restricted to a first matrix subset means that if the first signaling indicates a precoding matrix that does not belong to the first matrix subset, the first node considers that an error has occurred.

[0198] As an embodiment, the meaning that at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: the mth row of any matrix in the first matrix subset is an all-zero row.

[0199] As an embodiment, the meaning that at most one row between the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: for any matrix in the first matrix subset, the mth row of this matrix is ​​an all-zero row, and the nth row of this matrix is ​​an all-zero row or a non-zero row.

[0200] As an embodiment, the problems to be solved by the present application include: how to perform codebook-based PUSCH transmission when the number of antenna ports for sending PUSCH is less than the number of ports of SRS resources; in the above method, the first matrix used for precoding of the first signal is limited to the first matrix subset, and the m-th row of each matrix in the first matrix subset is an all-zero row, thereby ensuring that the m-th row of the first matrix is ​​an all-zero row, solving this problem.

[0201] As an embodiment, the benefits of the above method include: fully utilizing the antenna port on the UE side and enhancing uplink transmission performance.

[0202] As an embodiment, the above method has the following advantages: supporting 3-port PUSCH transmission using 4-port SRS resources, without increasing the number of supported SRS ports, and with minimal changes to the standard.

[0203] As an embodiment, the benefits of the above method include: simplified design and easy implementation.

[0204] As an embodiment, the meaning that at most one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: for any matrix in the first matrix subset, the mth row of this matrix is ​​an all-zero row, or the nth row of this matrix is ​​an all-zero row, or both the mth row and the nth row of this matrix are all-zero rows.

[0205] As an embodiment, the meaning that at most one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: for any matrix in the first matrix subset, the mth row of this matrix is ​​an all-zero row and the nth row is a non-zero row, or, the nth row of this matrix is ​​an all-zero row and the mth row is a non-zero row, or, both the mth row and the nth row of this matrix are all zero.

[0206] As an embodiment, the problems to be solved by the present application include: how to perform codebook-based PUSCH transmission when the number of antenna ports for sending PUSCH is less than the number of ports of SRS resources; in the above method, the first matrix used for precoding of the first signal is limited to the first matrix subset, and at most one row in the m-th row and the n-th row of each matrix in the first matrix subset is a non-zero row, thereby ensuring that at most one row in the m-th row and the n-th row of the first matrix is ​​a non-zero row, solving this problem.

[0207] As an embodiment, the benefits of the above method include: fully utilizing the antenna port on the UE side and enhancing uplink transmission performance.

[0208] As an embodiment, the above method has the following advantages: supporting 3-port PUSCH transmission using 4-port SRS resources, without increasing the number of supported SRS ports, and with minimal changes to the standard.

[0209] As an embodiment, the benefits of the above method include: more flexible design and better forward compatibility.

[0210] As an embodiment, the benefits of the above method include: greater freedom, better adaptability to different terminals, and further optimization of uplink transmission performance.

[0211] As an embodiment, the all-zero row refers to a row in which all elements are 0.

[0212] As an embodiment, the non-zero row refers to a row including at least one non-zero element.

[0213] As an embodiment, m is fixed.

[0214] As an embodiment, the m is a default value.

[0215] As an embodiment, m is fixed, and n is any positive integer that is not equal to m and not greater than K.

[0216] As an embodiment, the benefits of the above method include: simplified design, simple implementation, and reduced signaling overhead.

[0217] As an embodiment, K is equal to 4, m is fixed to 4, and n is 1, 2 or 3.

[0218] As an embodiment, m is configurable.

[0219] As an embodiment, m is configurable, and n is a positive integer that is not equal to m and not greater than K.

[0220] As an embodiment, m is configurable, and n is any positive integer that is not equal to m and not greater than K.

[0221] As an embodiment, the advantages of the above method include: more flexible signaling design, better forward compatibility, and better adaptability to different terminals.

[0222] As an embodiment, the m and n are respectively default.

[0223] As an embodiment, the m and n are respectively fixed.

[0224] As an embodiment, the benefits of the above method include: greater freedom and further optimization of uplink transmission performance.

[0225] As an embodiment, the benefits of the above method include: reducing signaling overhead.

[0226] As an embodiment, K is equal to 4, m is fixed to 4, and n is fixed to 3.

[0227] As an embodiment, the m and the n are configurable.

[0228] As an embodiment, the benefits of the above method include: more flexible signaling design and better forward compatibility.

[0229] As an embodiment, the benefits of the above method include: greater freedom, better adaptability to different terminals, and further optimization of uplink transmission performance.

[0230] As an embodiment, only when the first signaling indicates the first SRS resource, the first matrix is ​​restricted to the first matrix subset.

[0231] As an embodiment, the benefits of the above method include: optimizing the design for different SRS resources respectively, thereby further improving the performance of uplink transmission.

[0232] As an embodiment, the benefits of the above method include: reducing signaling overhead.

[0233] As an embodiment, the advantages of the above method include: good backward compatibility and minor changes to the standard.

[0234] Example 2

[0235] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in Figure 2.

[0236] FIG2 illustrates a network architecture 200. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or a 5G+ network architecture, or a 6G network architecture, or a network architecture adopted by 3GPP in future evolution. The network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System), or a 6GS (6G System). The network architecture 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a core network 210, a Home Subscriber Server (HSS) / Unified Data Management (UDM) 220, and an Internet service 230. The network architecture 200 may be interconnected with other access networks, but for simplicity these entities / interfaces are not shown. As shown, the network architecture 200 provides packet-switched services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes a node 203. The RAN may also include other nodes 204. The node 203 provides user and control plane protocol terminations towards the UE 201. The node 203 may be connected to the other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. The node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitter receive node), or some other suitable terminology. The core network 210 is 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is 6GC; the node 203 provides an access point to the core network 210 for the UE 201.Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term. Node 203 is connected to the core network 210 via an S1 / NG interface. The core network 210 includes the MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, the S-GW (Service Gateway) / UPF (User Plane Function) 212, and the P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that handles signaling between the UE 201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. The Internet service 230 includes operator-specific Internet protocol services, which may include Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0237] As an embodiment, the first node includes the UE201.

[0238] As an embodiment, the second node includes the node 203.

[0239] As an embodiment, the wireless link between the UE 201 and the node 203 includes a cellular network link.

[0240] As an embodiment, the sender of the first signaling includes the node 203.

[0241] As an embodiment, the recipient of the first signaling includes the UE201.

[0242] As an embodiment, the sender of the first signal includes the UE201.

[0243] As an embodiment, the receiver of the first signal includes the node 203.

[0244] As an embodiment, the sender of the first configuration information includes the node 203.

[0245] As an embodiment, the recipient of the first configuration information includes the UE201.

[0246] As an embodiment, the node 203 supports 3-port PUSCH transmission.

[0247] As an embodiment, the node 203 supports implementing 3-port PUSCH transmission using 4-port SRS resources.

[0248] As an embodiment, the UE 201 supports 3-port PUSCH transmission.

[0249] As an embodiment, the UE 201 supports 3-port PUSCH transmission using 4-port SRS resources.

[0250] Example 3

[0251] Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in FIG3 .

[0252] Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG3 . FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG3 illustrates the radio protocol architecture of the control plane 300 for communication between a first communication node device (UE, gNB, or RSU in V2X) and a second communication node device (gNB, UE, or RSU in V2X), or between two UEs, using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305, located above PHY 301, is responsible for the link between the first communication node device and the second communication node device, or between two UEs. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first communication node device between the second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355. However, the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0253] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node.

[0254] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node.

[0255] As an embodiment, the higher layer in this application refers to a layer above the physical layer.

[0256] As an embodiment, the first signaling is generated in the PHY301 or the PHY351.

[0257] As an embodiment, the first signaling is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0258] As an embodiment, the first signaling is generated in the RRC sublayer 306.

[0259] As an embodiment, the first signal is generated by the PHY 301 or the PHY 351 .

[0260] As an embodiment, the first configuration information is generated in the RRC sublayer 306.

[0261] Example 4

[0262] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0263] The first communications device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0264] The second communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0265] In transmission from the first communications device 410 to the second communications device 450, at the first communications device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In the DL (Downlink), the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communications device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communications device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as constellation mapping based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more parallel The transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, which is then provided to a different antenna 420.

[0266] During transmission from the first communications device 410 to the second communications device 450, each receiver 454 receives a signal at the second communications device 450 via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receive processor 456, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any parallel streams destined for the second communications device 450. The symbols on each parallel stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. In the DL, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing. The controller / processor 459 is also responsible for error detection using an acknowledgement (ACK) and / or negative acknowledgement (NACK) protocol to support HARQ operations.

[0267] During transmission from the second communications device 450 to the first communications device 410, at the second communications device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functionality at the first communications device 410 described in the DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communications device 410, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communications device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting parallel streams into multi-carrier / single-carrier symbol streams. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, these streams are provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0268] During transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the reception functionality at the second communication device 450 described for transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality. The controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program code and data. The memory 476 may be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transmit and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0269] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 device at least: receives the first signaling; sends the first signal. The first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in a PUSCH, the antenna port that transmits the first signal depends on the first SRS resource, and the precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most one of the nth and mth rows of any matrix in the first matrix subset is a non-zero row, and n and m are positive integers not greater than K, respectively, and n is not equal to m.

[0270] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: receiving the first signaling; and sending the first signal.

[0271] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 device at least: sends the first signaling; receives the first signal. The first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in a PUSCH, the antenna port that transmits the first signal depends on the first SRS resource, and the precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, at most one of the nth and mth rows of any matrix in the first matrix subset is a non-zero row, n and m are positive integers not greater than K, and n is not equal to m.

[0272] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: sending the first signaling; receiving the first signal.

[0273] As an embodiment, the first node in the present application includes the second communication device 450.

[0274] As an embodiment, the second node in the present application includes the first communication device 410.

[0275] As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first signaling; and at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to send the first signaling.

[0276] As an embodiment, at least one of {the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller / processor 475, and the memory 476} is used to receive the first signal; and at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the memory 460, and the data source 467} is used for the first signal.

[0277] As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first configuration information; and at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to send the first configuration information.

[0278] Example 5

[0279] Embodiment 5 illustrates a flow chart of transmission according to an embodiment of the present application, as shown in FIG5 . In FIG5 , the second node U1 and the first node U2 are communicating nodes transmitting via an air interface. In FIG5 , the steps in block F51 are optional.

[0280] For the second node U1, first configuration information is sent in step S5101; first signaling is sent in step S511; and a first signal is received in step S512.

[0281] For the first node U2, first configuration information is received in step S5201; first signaling is received in step S521; and a first signal is sent in step S522.

[0282] In embodiment 5, the first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in the PUSCH, the antenna port for sending the first signal depends on the first SRS resource, and the precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, and K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0283] As an embodiment, the first node U2 is the first node in this application.

[0284] As an embodiment, the second node U1 is the second node in this application.

[0285] As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between a base station device and a user equipment.

[0286] As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between a relay node device and a user equipment.

[0287] As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between user equipments.

[0288] As an embodiment, the second node U1 is a base station maintaining a serving cell of the first node U2.

[0289] As an embodiment, the first signaling is transmitted on PDCCH (Physical downlink shared channel).

[0290] As an embodiment, the first signaling is transmitted on PDSCH (Physical Uplink Shared Channel).

[0291] As an embodiment, the step in box F51 in FIG. 5 exists; the first configuration information configures the first SRS resource.

[0292] As an embodiment, the step in box F51 in FIG. 5 exists; the first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0293] As an embodiment, the first configuration information is carried by RRC signaling.

[0294] As an embodiment, the first configuration information is carried by one or more RRC IEs.

[0295] As an embodiment, the first configuration information is carried by an RRC IE.

[0296] As an embodiment, the first configuration information is carried by each RRCIE in multiple RRC IEs.

[0297] As an embodiment, the first configuration information includes all or part of the information of each RRCIE in one or more RRC IEs.

[0298] As an embodiment, the first configuration information is an RRC IE.

[0299] As an embodiment, the first configuration information is carried by the SRS-Config IE.

[0300] As an embodiment, the first configuration information is carried by BWP-UplinkDedicated IE.

[0301] As an embodiment, the first configuration information is carried by ServingCellConfig IE.

[0302] As an embodiment, the first configuration information is carried by CellGroupConfig IE.

[0303] As an embodiment, the first configuration information includes all or part of the information in the SRS-Config IE.

[0304] As an embodiment, the first configuration information includes all or part of the information in the BWP-UplinkDedicated IE.

[0305] As an embodiment, the first configuration information includes all or part of the information in the ServingCellConfig IE.

[0306] As an embodiment, the first configuration information includes all or part of the information in the CellGroupConfig IE.

[0307] As an embodiment, the first configuration information includes all or part of the information in the srs-ResourceToAddModList field in the SRS-Config IE.

[0308] As an embodiment, the first configuration information includes all or part of the information in the srs-ResourceSetToAddModList field in the SRS-Config IE.

[0309] As an embodiment, the first configuration information includes all or part of the information in a higher layer parameter SRS-Resource in the SRS-Config IE.

[0310] As an embodiment, the first configuration information includes all or part of the information in a higher layer parameter SRS-ResourceSet in the SRS-Config IE.

[0311] As an embodiment, the first configuration information configures the first SRS resource, and the first configuration information includes all or part of the information in the srs-ResourceToAddModList field in the SRS-Config IE.

[0312] As an embodiment, the first configuration information configures the first SRS resource set, and the first configuration information includes all or part of the information in the srs-ResourceSetToAddModList field in the SRS-Config IE.

[0313] As an embodiment, the first configuration information is carried by MACCE.

[0314] As an embodiment, the first configuration information is carried by one or more MACCEs.

[0315] As an embodiment, the first configuration information is carried jointly by RRC signaling and MACCE.

[0316] As an embodiment, the first configuration information includes all or part of the information in one or more RRC signalings and all or part of the information in one or more MACCEs.

[0317] As an embodiment, the first configuration information is carried by DCI.

[0318] As an embodiment, the first configuration information is carried jointly by RRC signaling and DCI.

[0319] As an embodiment, the first configuration information includes all or part of the information in one or more RRC signalings and all or part of the information in one or more DCIs.

[0320] As an embodiment, the first configuration information is carried jointly by MACCE and DCI.

[0321] As an embodiment, the first configuration information includes all or part of the information in one or more MACCEs and all or part of the information in one or more DCIs.

[0322] As an embodiment, only when the first signaling indicates one SRS resource in the first SRS resource set, the first matrix is ​​restricted to the first matrix subset.

[0323] As an embodiment, the benefits of the above method include: optimizing the design for different SRS resource sets respectively, thereby further improving the performance of uplink transmission.

[0324] As an embodiment, the benefits of the above method include: simplifying the signaling design of the RRC layer.

[0325] As an embodiment, the benefits of the above method include: good forward compatibility.

[0326] As an embodiment, the first configuration information is transmitted on PDSCH.

[0327] As an embodiment, the first matrix subset depends on the first configuration information.

[0328] As an embodiment, the m is a default value.

[0329] As an embodiment, m is a default value, and n is a positive integer not greater than K and not equal to m.

[0330] As an embodiment, m is a default value, and n is any positive integer that is not greater than K and not equal to m.

[0331] As an embodiment, m is a default value and n is configurable.

[0332] As an embodiment, the m and n are respectively default.

[0333] As an embodiment, the default means: no configuration is required.

[0334] As an embodiment, the default means: no explicit configuration is required.

[0335] As an embodiment, the default means that when the K is given, no configuration is required.

[0336] As an embodiment, the default refers to: fixed.

[0337] As an embodiment, the default means that, given the K, it is fixed.

[0338] As an embodiment, the m is fixed to K by default.

[0339] As an embodiment, the default value of m is: fixed to K minus 1.

[0340] As an embodiment, the default value of m is: fixed to 1.

[0341] As an embodiment, the m and n are respectively defined by default as follows: m is fixed to K, and n is fixed to K minus 1.

[0342] As an embodiment, the m and n are respectively defined by default as follows: m is fixed to 1, and n is fixed to 2.

[0343] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with the first higher layer parameter.

[0344] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with a first higher layer parameter and the value of the first higher layer parameter configured with the first node belongs to a first parameter value set.

[0345] As an embodiment, the transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

[0346] As an embodiment, the linear value of the first power is equal to the first coefficient multiplied by the linear value of the second power.

[0347] Example 6

[0348] Example 6 illustrates a schematic diagram of a first matrix according to an embodiment of the present application, as shown in Figure 6. In Figure 6, "×" represents an element of the first matrix. In Figure 6(a), the number of columns of the first matrix is ​​greater than 1; in Figure 6(b), the number of columns of the first matrix is ​​equal to 1.

[0349] As an embodiment, the number of rows of the first matrix is ​​equal to K.

[0350] As an embodiment, the number of columns of the first matrix is ​​greater than or equal to 1.

[0351] As an embodiment, the number of columns of the first matrix is ​​equal to the number of layers of the first signal.

[0352] As an embodiment, any element of the first matrix is ​​a complex number.

[0353] As an embodiment, all non-zero elements of the first matrix are of constant modulus.

[0354] As an embodiment, the moduli of all non-zero elements of the first matrix are equal.

[0355] Example 7

[0356] Embodiment 7 illustrates a schematic diagram of a first matrix subset according to an embodiment of the present application, as shown in FIG7. In embodiment 7, the mth row of any matrix in the first matrix subset is an all-zero row.

[0357] The position of the mth row in FIG7 is only exemplary and not limiting; for the specific value of m, refer to other embodiments.

[0358] As an embodiment, for any matrix in the first matrix subset, the m-th row of the matrix is ​​an all-zero row, and the n-th row of the matrix is ​​an all-zero row or a non-zero row.

[0359] Example 8

[0360] Embodiment 8 illustrates a schematic diagram of a first matrix subset according to an embodiment of the present application, as shown in FIG8 . In Embodiment 8, for any matrix in the first matrix subset, the mth row of the matrix is ​​an all-zero row, or the nth row of the matrix is ​​an all-zero row, or both the mth row and the nth row of the matrix are all-zero rows.

[0361] The positions of the mth row and the nth row in FIG8 are merely exemplary and not restrictive; for specific values ​​of m and n, refer to other embodiments.

[0362] As an embodiment, for any matrix in the first matrix subset, the m-th row of this matrix is ​​an all-zero row and the n-th row is a non-zero row, or the n-th row of this matrix is ​​an all-zero row and the m-th row is a non-zero row, or both the m-th row and the n-th row of this matrix are all zero.

[0363] Example 9

[0364] Embodiment 9 illustrates a schematic diagram of a first signal according to an embodiment of the present application, as shown in FIG9 . In Embodiment 9, the first signal includes v layers, where v is a positive integer; the v layers are mapped to K antenna ports after being precoded using the first matrix, and the K antenna ports are the same antenna ports as the SRS ports of the first SRS resource.

[0365] In FIG. 9, the p0, ..., the p K-1 are the K antenna ports, the y (0) (i),…,the y (v-1) (i) represents the v layers, W represents the first matrix, and M represents the number of modulation symbols for each layer.

[0366] As an embodiment, the z (p) (i) is defined in 3GPP TS 38.211, where p = p0, ..., p K-1 .

[0367] As an embodiment, the K antenna ports are respectively the same antenna ports as the K SRS ports of the first SRS resources.

[0368] As an embodiment, the K antenna ports are indexed sequentially.

[0369] As an embodiment, the first antenna port among the K antenna ports is the same antenna port as the first SRS port among the K SRS ports, the second antenna port among the K antenna ports is the same antenna port as the second SRS port among the K SRS ports, and so on.

[0370] Example 10

[0371] Embodiment 10 illustrates a schematic diagram of first configuration information according to an embodiment of the present application, as shown in FIG10. In embodiment 10, the first configuration information configures the first SRS resource.

[0372] As an embodiment, the first configuration information includes configuration information of the first SRS resource.

[0373] As an embodiment, the configuration information of the first SRS resource includes one or more of SRS-ResourceId, SRS port number, time domain resources, frequency domain resources, SRS sequence ID, frequency domain position, frequency domain displacement, starting position, number of symbols, repetition factor, spatial relationship information, comb value (comb), comb offset (comboffset), cyclic shift (cyclicshift), TCI state or frequency hopping related parameters.

[0374] As an embodiment, the frequency hopping related parameters include one or more of c-SRS, b-SRS, b-hop or groupOrSequenceHopping.

[0375] Example 11

[0376] Embodiment 11 illustrates a schematic diagram of first configuration information according to an embodiment of the present application, as shown in FIG11. In embodiment 11, the first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0377] As an embodiment, the first SRS resource set is an SRSresourceset.

[0378] As an embodiment, the first SRS resource set is identified by an SRS-ResourceSetId.

[0379] As an embodiment, the first SRS resource set includes one or more SRS resources.

[0380] As an embodiment, any SRS resource in the first SRS resource set is identified by an SRS-ResourceId.

[0381] As an embodiment, the first matrix subset is configured for the first SRS resource set.

[0382] As an embodiment, the first configuration information includes configuration information of the first SRS resource set.

[0383] As an embodiment, the configuration information of the first SRS resource set includes SRS-ResourceSetId, including SRS resources, resource type, "usage", power control parameters, associated CSI-RS (Channel state information reference signal), whether to follow the indicated TCI state, or one or more of time slot offset.

[0384] As an embodiment, the resource type is set to one of periodic, semi-persistent or aperiodic.

[0385] As an embodiment, the “usage” is set to one of “beamManagement”, “codebook”, “nonCodebook” or “antennaSwitching”.

[0386] As an embodiment, the power control parameter includes at least one of P0, alpha, path loss RS (Reference Signal) or power control adjustment state (PowerControlAdjustmentStates).

[0387] Example 12

[0388] Embodiment 12 illustrates a schematic diagram of a first configuration information indicating a first matrix subset according to an embodiment of the present application; as shown in FIG12 .

[0389] As an embodiment, the meaning that the first matrix subset depends on the first configuration information includes: the first configuration information indicates the first matrix subset.

[0390] As an embodiment, the first configuration information explicitly indicates the first matrix subset.

[0391] As an embodiment, the first configuration information indicates each matrix in the first matrix subset.

[0392] As an embodiment, the first configuration information includes the first matrix subset.

[0393] As an embodiment, the first configuration information includes a matrix list, and the first matrix subset depends on the matrix list.

[0394] As a sub-embodiment of the above embodiment, the first matrix subset includes the one matrix list.

[0395] As a sub-embodiment of the above embodiment, the first matrix subset does not include the one matrix list.

[0396] As a sub-embodiment of the above embodiment, the first matrix subset consists of matrices in the candidate matrix set that do not belong to the one matrix list.

[0397] As an embodiment, the benefits of the above method include: more flexible signaling design and good forward compatibility.

[0398] As an embodiment, the first configuration information includes a bit map, and the first matrix subset depends on the bit map.

[0399] As a sub-embodiment of the above embodiment, each bit in the one bit map corresponds to a matrix in the candidate matrix set; for any matrix in the candidate matrix set, the bit in the one bit map corresponding to the matrix indicates whether the matrix belongs to the first matrix subset.

[0400] As an embodiment, the benefits of the above method include: achieving a good balance between signaling overhead and flexibility.

[0401] As an embodiment, the candidate matrix set includes multiple matrices.

[0402] As an embodiment, the number of rows of each matrix in the candidate matrix set is equal to K.

[0403] As an embodiment, the number of columns of each matrix in the candidate matrix set is not greater than a first maximum number of layers, and the first maximum number of layers is configurable.

[0404] As an embodiment, each matrix in the candidate matrix set is a precoding matrix.

[0405] As an embodiment, the candidate matrix set depends on a higher-level parameter "codebookSubset".

[0406] As an embodiment, the candidate matrix set includes a precoding matrix for K antenna ports, a maximum rank equal to the first maximum number of layers, a higher-layer parameter including "ul-FullPowerTransmission" in the name is not configured or is configured as "fullpower", and a higher-layer parameter "codebookSubset" is configured as "nonCoherent"; the first maximum number of layers is configurable.

[0407] As an embodiment, the candidate matrix set consists of precoding matrices for K antenna ports, with a maximum rank equal to the first maximum number of layers, a higher-layer parameter including "ul-FullPowerTransmission" in the name is not configured or is configured as "fullpower", and a higher-layer parameter "codebookSubset" is configured as "nonCoherent"; the first maximum number of layers is configurable.

[0408] As an embodiment, the first configuration information implicitly indicates the first matrix subset.

[0409] As an embodiment, the first configuration information indicates the first matrix subset by indicating other information.

[0410] As an embodiment, the benefits of the above method include: reducing signaling overhead.

[0411] As an embodiment, the first configuration information indicates the first matrix subset by indicating m.

[0412] As an embodiment, the first matrix subset does not include a matrix whose m-th row in the candidate matrix set is a non-zero row.

[0413] As an embodiment, for any matrix in the candidate matrix set, if the mth row of this matrix is ​​a non-zero row, the first matrix subset does not include this matrix.

[0414] As an embodiment, the first configuration information indicates the first matrix subset by indicating the m and the n.

[0415] As an embodiment, the first matrix subset does not include matrices in the candidate matrix set whose m-th row and n-th row are both non-zero rows.

[0416] As an embodiment, for any matrix in the candidate matrix set, if the m-th row and the n-th row of this matrix are both non-zero rows, the first matrix subset does not include this matrix.

[0417] As an embodiment, the first configuration information indicates the first matrix subset by indicating a second integer.

[0418] As an embodiment, the second integer represents the maximum number of ports that can be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0419] As an embodiment, the second integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit a PUSCH.

[0420] As an embodiment, the second integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit PUSCH simultaneously.

[0421] As an embodiment, if the second integer is smaller than K, for any matrix in the candidate matrix set, if the m-th row of this matrix is ​​a non-zero row, the first matrix subset does not include this matrix.

[0422] As a sub-embodiment of the above embodiment, the m is fixed to the K.

[0423] As a sub-embodiment of the above embodiment, the m is fixed to the K minus 1.

[0424] As a sub-embodiment of the above embodiment, m is fixed to 1.

[0425] As a sub-embodiment of the above embodiment, the m is fixed to the second integer.

[0426] As a sub-embodiment of the above embodiment, m is fixed to the second integer plus 1.

[0427] As an embodiment, the first configuration information indicates the first matrix subset by indicating that the second integer is smaller than K.

[0428] As an embodiment, the first configuration information indicates the first matrix subset by indicating a third integer; the third integer represents the index of the port that cannot be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0429] As an embodiment, j is equal to the third integer; for any matrix in the candidate matrix set, if the j-th row of this matrix is ​​a non-zero row, the first matrix subset does not include this matrix.

[0430] As an embodiment, the first configuration information indicates the first matrix subset by indicating an index sequence, where the index sequence includes multiple indices, and each index in the index sequence is a non-negative integer.

[0431] As an embodiment, the one index sequence includes: the index of the SRS port that cannot be used to transmit PUSCH at the same time among the K SRS ports of the first SRS resource.

[0432] As a sub-embodiment of the above embodiment, the index sequence includes index #0 and index #1. For any matrix in the candidate matrix set, if the (index #0+1)th row and the (index #1+1)th row of this matrix are both non-zero rows, the first matrix subset does not include this matrix.

[0433] As an embodiment, the first configuration information indicates m.

[0434] As an embodiment, the first configuration information indicates the m and the n.

[0435] Example 13

[0436] Embodiment 13 illustrates a schematic diagram of a first matrix being restricted within a first matrix subset according to an embodiment of the present application, as shown in FIG13. In embodiment 13, the first node determines, based on the first configuration information, that the first matrix is ​​restricted within the first matrix subset.

[0437] As an embodiment, the meaning that the first matrix subset depends on the first configuration information includes: whether the first matrix is ​​restricted within the first matrix subset depends on the first configuration information.

[0438] As an embodiment, the meaning that the first matrix subset depends on the first configuration information includes: the first node determines, based on the first configuration information, that the first matrix is ​​restricted within the first matrix subset.

[0439] As an embodiment, the meaning that the first matrix subset depends on the first configuration information includes: the first configuration information indicates whether the first matrix is ​​restricted to the first matrix subset.

[0440] As an embodiment, the meaning that the first matrix subset depends on the first configuration information includes: the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset.

[0441] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating a matrix list.

[0442] As an embodiment, only when the first configuration information includes a matrix list, the first matrix is ​​restricted to the first matrix subset.

[0443] As an embodiment, the first matrix subset depends on the one matrix list.

[0444] As an embodiment, the first matrix subset includes matrices in the one matrix list.

[0445] As an embodiment, the first matrix subset does not include matrices in the one matrix list.

[0446] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating a bit map.

[0447] As an embodiment, only when the first configuration information includes a bitmap, the first matrix is ​​restricted to the first matrix subset.

[0448] As an embodiment, the first matrix subset depends on the one bitmap.

[0449] As an embodiment, each bit in the bitmap corresponds to a matrix in the candidate matrix set.

[0450] As an embodiment, for any matrix in the candidate matrix set, the bit corresponding to the matrix in the bitmap indicates whether the matrix belongs to the first matrix subset.

[0451] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating a second integer.

[0452] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating a second integer smaller than K.

[0453] As an embodiment, the second integer represents the maximum number of ports that can be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0454] As an embodiment, the second integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit a PUSCH.

[0455] As an embodiment, the second integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit PUSCH simultaneously.

[0456] As an embodiment, only when the first configuration information includes the second integer, the first matrix is ​​restricted to the first matrix subset.

[0457] As an embodiment, only when the first configuration information includes a second integer smaller than K, the first matrix is ​​restricted to the first matrix subset.

[0458] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating a third integer.

[0459] As an embodiment, the third integer represents the index of a port that cannot be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0460] As an embodiment, only when the first configuration information includes the third integer, the first matrix is ​​restricted to the first matrix subset.

[0461] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating an index sequence, wherein the index sequence includes multiple indices, and each index in the index sequence is a non-negative integer.

[0462] As an embodiment, the one index sequence includes: the index of the SRS port that cannot be used to transmit PUSCH at the same time among the K SRS ports of the first SRS resource.

[0463] As an embodiment, only when the first configuration information includes the one index sequence, the first matrix is ​​restricted to the first matrix subset.

[0464] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating m.

[0465] As an embodiment, the first configuration information indicates that the first matrix is ​​restricted to the first matrix subset by indicating the m and the n.

[0466] As an embodiment, only when the first configuration information includes a first higher layer parameter, the first matrix is ​​restricted to the first matrix subset.

[0467] As an embodiment, the first higher layer parameter indicates that the first node supports 3-port PUSCH transmission.

[0468] As an embodiment, the first higher layer parameter indicates that some SRS ports of an SRS resource configured by the first node cannot be used to transmit the PUSCH.

[0469] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first configuration information includes a first higher layer parameter and the value of the first higher layer parameter included in the first configuration information belongs to a first parameter value set.

[0470] As an embodiment, the first higher layer parameter indicates whether the first node supports 3-port PUSCH transmission.

[0471] As an embodiment, the first higher layer parameter indicates whether some SRS ports of an SRS resource among the SRS resources configured for the first node cannot be used for transmitting the PUSCH.

[0472] As an embodiment, the first parameter value set includes only one parameter value.

[0473] As an embodiment, the first parameter value set includes multiple parameter values.

[0474] As an embodiment, each parameter value in the first parameter value set is a candidate for the first higher-layer parameter.

[0475] As an embodiment, one of the parameter values ​​in the first parameter value set includes a character string “enabled”.

[0476] Example 14

[0477] Embodiment 14 illustrates a schematic diagram of first higher layer parameters according to an embodiment of the present application, as shown in FIG14. In embodiment 14, only when the first node is configured with the first higher layer parameters, the first matrix is ​​restricted to the first matrix subset.

[0478] As an embodiment, the name of the first higher-layer parameter includes "3" and "port".

[0479] As an embodiment, the name of the first higher-layer parameter includes "3", "port" and "ul".

[0480] As an embodiment, the first higher layer parameter is carried by PUSCH-Config IE.

[0481] As an embodiment, the first higher layer parameter is carried by SRS-Config IE.

[0482] As an embodiment, the first higher layer parameter is carried by BWP-UplinkDedicated IE.

[0483] As an embodiment, the first higher layer parameter is carried by ServingCellConfig IE.

[0484] As an embodiment, the first higher layer parameter is carried by CellGroupConfig IE.

[0485] As an embodiment, the first higher layer parameter is configured by RRC signaling.

[0486] As an embodiment, the first higher layer parameter is configured by a serving cell of the first node.

[0487] As an embodiment, the first higher layer parameter indicates that the first node supports 3-port PUSCH transmission.

[0488] As an embodiment, the first higher layer parameter indicates that the first node supports transmission of PUSCH using only part of SRS ports of one SRS resource.

[0489] As an embodiment, the first higher layer parameter indicates that the first node supports transmission of PUSCH using only 3 SRS ports of an SRS resource configured with 4 SRS ports.

[0490] As an embodiment, the first higher layer parameter indicates that some SRS ports of an SRS resource configured by the first node cannot be used to transmit the PUSCH.

[0491] As an embodiment, the first higher layer parameter is configured for the first SRS resource.

[0492] As an embodiment, the first higher layer parameter is configured for the first SRS resource set.

[0493] As an embodiment, the first configuration information carries the first higher layer parameter.

[0494] As an embodiment, if the first node is configured with the first higher layer parameter, the first higher layer parameter is configured for the first SRS resource.

[0495] As an embodiment, if the first node is configured with the first higher layer parameter, the first higher layer parameter is configured for the first SRS resource set.

[0496] As an embodiment, if the first node is configured with the first higher layer parameter, the first configuration information carries the first higher layer parameter.

[0497] As an embodiment, when the first node is not configured with the first higher layer parameter, the first matrix is ​​not restricted to the first matrix subset.

[0498] As an embodiment, when the first node is not configured with the first higher layer parameter, candidates for the first matrix include matrices outside the first matrix subset.

[0499] As an embodiment, when the first node is not configured with the first higher layer parameter, the candidates for the first matrix are all matrices in a candidate matrix set, and the candidate matrix set includes the first matrix subset and includes at least one matrix that does not belong to the first matrix subset.

[0500] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with the first higher layer parameter and the first signaling indicates the first SRS resource.

[0501] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with the first higher layer parameter and the first signaling indicates one SRS resource in the first SRS resource set.

[0502] Example 15

[0503] Embodiment 15 illustrates a schematic diagram of a first higher-layer parameter according to an embodiment of the present application, as shown in FIG15. In Embodiment 15, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with the first higher-layer parameter and the value of the first higher-layer parameter belongs to the first parameter value set.

[0504] As an embodiment, the first higher layer parameter indicates whether the first node supports 3-port PUSCH transmission.

[0505] As an embodiment, the first higher layer parameter indicates whether the first node supports transmitting PUSCH using only part of SRS ports of an SRS resource.

[0506] As an embodiment, the first higher layer parameter indicates whether the first node supports transmitting PUSCH using only 3 SRS ports of an SRS resource configured with 4 SRS ports.

[0507] As an embodiment, the first higher layer parameter indicates whether some SRS ports of an SRS resource among the SRS resources configured for the first node cannot be used for transmitting the PUSCH.

[0508] As an embodiment, the first parameter value set includes only one parameter value.

[0509] As an embodiment, the first parameter value set includes multiple parameter values.

[0510] As an embodiment, each parameter value in the first parameter value set is a candidate for the first higher-layer parameter.

[0511] As an embodiment, one of the parameter values ​​in the first parameter value set includes a character string “enabled”.

[0512] As an embodiment, one of the parameter values ​​in the first parameter value set is a character string “enabled”.

[0513] As an embodiment, when the first node is not configured with the first higher layer parameter or the value of the first higher layer parameter configured for the first node does not belong to the first parameter value set, the first matrix is ​​not restricted to the first matrix subset.

[0514] As an embodiment, when the first node is not configured with the first higher layer parameter or the value of the first higher layer parameter configured for the first node does not belong to the first parameter value set, the candidates for the first matrix include matrices outside the first matrix subset.

[0515] As an embodiment, when the first node is not configured with the first higher-layer parameter or the value of the first higher-layer parameter configured by the first node does not belong to the first parameter value set, the candidates for the first matrix are all matrices in a candidate matrix set, and the candidate matrix set includes the first matrix subset and includes at least one matrix that does not belong to the first matrix subset.

[0516] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the value of the first higher layer parameter configured by the first node belongs to the first parameter value set and the first signaling indicates the first SRS resource.

[0517] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the value of the first higher layer parameter configured by the first node belongs to the first parameter value set and the first signaling indicates an SRS resource in the first SRS resource set.

[0518] Example 16

[0519] Embodiment 16 illustrates a schematic diagram of a first power according to an embodiment of the present application, as shown in FIG16. In Embodiment 16, the linear value of the first power is equal to the first coefficient multiplied by the linear value of the second power, and the first coefficient is equal to the ratio of the number of non-zero power antenna ports transmitting the first signal to a first integer, where the first integer is less than the number of SRS ports of the first SRS resource.

[0520] As an embodiment, the linear value of the first power is equal to 10 to the power of x1, and x1 is equal to the first power divided by 10.

[0521] As an embodiment, the linear value of the second power is equal to 10 to the power of x2, and x2 is equal to the second power divided by 10.

[0522] As an embodiment, the first node evenly distributes the first power to the non-zero power antenna ports of the first signal.

[0523] As an embodiment, the unit of the first power is dBm.

[0524] As an embodiment, the second power is equal to the minimum value of the first reference power and the first power threshold.

[0525] As an embodiment, the second power is P PUSCH,b,f,c (i,j,q d ,l).

[0526] As an embodiment, the P PUSCH,b,f,c (i,j,q d ,l) is defined in 3GPPTS38.213.

[0527] As an embodiment, the first node sends the first signal in the uplink BWP (Bandwidth part) b of the carrier (carrier) f of the serving cell c in the PUSCH transmission opportunity (transmission occasion) i using the parameter set configuration (parameter set configuration) indexed as j and the PUSCH power control adjustment state (PUSCH power control adjustment state) indexed as 1.

[0528] As an embodiment, the unit of the second power is dBm.

[0529] As an embodiment, the unit of the first reference power is dBm.

[0530] As an embodiment, the unit of the first power threshold is dBm.

[0531] As an embodiment, the first power threshold is the maximum output power configured for the first node.

[0532] As an embodiment, the first power threshold is the maximum output power of the PUSCH transmission opportunity i on the carrier f configured by the first node for serving cell c.

[0533] As an embodiment, the first power threshold is P CMAX,f,c (i).

[0534] As an embodiment, the first node sends the first signal in a PUSCH transmission opportunity i in a carrier f of a serving cell c.

[0535] As an embodiment, the P CMAX,f,c For the definition of (i), see 3GPP TS 38.213.

[0536] As an embodiment, the first coefficient is a positive real number not greater than 1.

[0537] As an embodiment, the first coefficient is equal to 1.

[0538] As an embodiment, the first coefficient is less than 1.

[0539] As an embodiment, the number of the non-zero power antenna ports that transmit the first signal is equal to the number of non-zero rows in the first matrix.

[0540] As an embodiment, the non-zero power antenna port that sends the first signal refers to: an antenna port that is used to send the first signal and is allocated non-zero power.

[0541] As an embodiment, the non-zero power antenna port for sending the first signal refers to: the antenna port on which the first node transmits the first signal with non-zero power.

[0542] As an embodiment, the non-zero power antenna port that sends the first signal refers to: the antenna port corresponding to the non-zero row in the first matrix.

[0543] As an embodiment, the first integer is fixed.

[0544] As an embodiment, the first integer does not need to be configured.

[0545] As an embodiment, for a given K, the first integer is fixed.

[0546] As an embodiment, for a given K, the first integer does not need to be configured.

[0547] As an embodiment, the first integer is fixed to 3.

[0548] As an embodiment, the first integer is fixed to K minus 1.

[0549] As an embodiment, the first integer is equal to the number of SRS ports of the first SRS resource minus 1.

[0550] As an embodiment, the first integer is equal to 3.

[0551] As an embodiment, the first integer is equal to K minus 1.

[0552] As an embodiment, the number of SRS ports of the first SRS resource is equal to K.

[0553] As an embodiment, the number of SRS ports of the first SRS resource is equal to K, and the first integer is equal to K minus 1.

[0554] As an embodiment, the number of SRS ports of the first SRS resource is equal to 4, and the first integer is equal to 3.

[0555] As an embodiment, the first integer represents the maximum number of ports that can be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0556] As an embodiment, the first integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit a PUSCH.

[0557] As an embodiment, the first integer represents the maximum number of ports among the K SRS ports of the first SRS resource that can be used to transmit PUSCH simultaneously.

[0558] As an embodiment, the first integer is smaller than the maximum number of SRS ports in an SRS resource supported by the first node.

[0559] As an embodiment, the first integer is configurable.

[0560] As an embodiment, the first configuration information indicates the first integer.

[0561] As an embodiment, the first configuration information indicates the first integer by indicating a second integer; the second integer represents the maximum number of ports that can be used to transmit PUSCH among the K SRS ports of the first SRS resource.

[0562] As a sub-embodiment of the above embodiment, when the second integer is smaller than K, the first integer is equal to the second integer.

[0563] As a sub-embodiment of the above embodiment, the first integer is equal to the second integer smaller than K.

[0564] As an embodiment, the first node determines, based on the first configuration information, that the first coefficient is equal to the ratio of the number of the non-zero power antenna ports that send the first signal to the first integer.

[0565] As an embodiment, the first configuration information indicates that the first coefficient is equal to the ratio of the number of the non-zero power antenna ports that send the first signal and the first integer.

[0566] As an embodiment, only when the first configuration information indicates the first integer, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports that send the first signal to the first integer.

[0567] As an embodiment, only when the first configuration information indicates a second integer smaller than K, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal to the first integer.

[0568] As a sub-embodiment of the above embodiment, the first integer is equal to the second integer smaller than K.

[0569] As an embodiment, only when the first configuration information includes a matrix list, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer; the first matrix subset depends on the one matrix list.

[0570] As a sub-embodiment of the above embodiment, the first matrix subset includes matrices in the one matrix list.

[0571] As a sub-embodiment of the above embodiment, the first matrix subset does not include matrices in the one matrix list.

[0572] As an embodiment, only when the first configuration information includes a bit map, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer; the first matrix subset depends on the one bit map.

[0573] As a sub-embodiment of the above embodiment, each bit in the bitmap corresponds to a matrix in the candidate matrix set.

[0574] As a sub-embodiment of the above embodiment, for any matrix in the candidate matrix set, the bit corresponding to the matrix in the bitmap indicates whether the matrix belongs to the first matrix subset.

[0575] As an embodiment, only when the first configuration information includes the one index sequence, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer; the one index sequence includes: the index of the SRS port that cannot be used to transmit PUSCH at the same time among the K SRS ports of the first SRS resource.

[0576] As an embodiment, only when the first configuration information includes a third integer, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer; the third integer represents the index of the port among the K SRS ports of the first SRS resource that cannot be used to transmit PUSCH.

[0577] As an embodiment, only when the first signaling indicates the first SRS resource, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer.

[0578] As an embodiment, only when the first signaling indicates one SRS resource in the first SRS resource set, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer.

[0579] As an embodiment, only when the first node is configured with the first higher layer parameter, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer.

[0580] As an embodiment, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal to the first integer only when the first node is configured with the first higher layer parameter and the value of the first higher layer parameter belongs to the first parameter value set.

[0581] As an embodiment, only when the first node is configured with the first higher layer parameter and the first signaling indicates the first SRS resource, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer.

[0582] As an embodiment, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer only when the first node is configured with the first higher layer parameter and the first signaling indicates an SRS resource in the first SRS resource set.

[0583] As an embodiment, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer only when the value of the first higher layer parameter configured by the first node belongs to the first parameter value set and the first signaling indicates the first SRS resource.

[0584] As an embodiment, the first coefficient is equal to the ratio of the number of the non-zero power antenna ports sending the first signal and the first integer only when the value of the first higher layer parameter configured by the first node belongs to the first parameter value set and the first signaling indicates an SRS resource in the first SRS resource set.

[0585] As an embodiment, the first reference power is linearly correlated with the first component, and a linear coefficient between the first reference power and the first component is equal to 1.

[0586] As an embodiment, the first component is configurable.

[0587] As an embodiment, the first component is configured by a higher layer parameter.

[0588] As an embodiment, the first component is configured by a higher layer parameter "P0".

[0589] As an embodiment, the first component is configured by a higher layer parameter including "P0" in its name.

[0590] As an embodiment, the first component consists of higher layer parameters including "P0" and "PUSCH" in the name.

[0591] As an embodiment, the first component is configured by a higher layer parameter whose name includes "P0" and "NominalWithoutGrant".

[0592] As an embodiment, the first component is configured by higher layer parameters whose names include "P0", "Alpha" and "sets".

[0593] As an embodiment, the first component is configured by higher layer parameters whose names include "P0", "PUSCH" and "AlphaSet".

[0594] As an embodiment, the first component is P0.

[0595] As an embodiment, the first component is P0 for uplink power control.

[0596] As an embodiment, the first component is P0 used for PUSCH power control.

[0597] As an embodiment, the definition of P0 refers to 3GPP TS 38.331 and TS 38.213.

[0598] As an embodiment, the first component is P 0_PUSCH,b,f,c (j).

[0599] As an embodiment, the P 0_PUSCH,b,f,c For the definition of (j), see Section 7 of 3GPP TS 38.213.

[0600] As an embodiment, the first reference power is linearly correlated with the second component, the linear coefficient between the first reference power and the second component is equal to 1, and the second component is related to the bandwidth allocated to the first signal.

[0601] As an embodiment, the second component is related to the bandwidth expressed as the number of RBs (Resource Blocks) allocated to the first signal.

[0602] As an embodiment, the second component is equal to described is the bandwidth expressed as the number of RBs, and μ is the SCS (Subcarrier spacing) configuration.

[0603] As an embodiment, the For the definition of μ, refer to Section 7 of 3GPP TS 38.213.

[0604] As an embodiment, the first reference power and the third component are linearly correlated, the linear coefficient between the first reference power and the third component is equal to the second coefficient, the third component is a path loss estimate, and the second coefficient is a non-negative real number less than or equal to 1.

[0605] As an embodiment, the third component is a downlink path loss estimate expressed in dB.

[0606] As an embodiment, the first node calculates the third component by measuring a first RS (Reference Signal), where the first RS is an SS / PBCH block (Synchronisation Signal / physical broadcast channel Block) or a CSI-RS.

[0607] As an embodiment, the first RS is a path loss RS.

[0608] As an embodiment, the first RS is configured by higher layer parameters.

[0609] As an embodiment, the first RS is configured by a higher layer parameter whose name includes "pathlossReferenceRS".

[0610] As an embodiment, the first RS is configured by a higher layer parameter whose name includes "PUSCH" and "pathlossReferenceRS".

[0611] As an embodiment, the third component is equal to the first RS power minus the first RSRP (Reference signal received power); the first RS power is configured by a higher layer, and the first RSRP is obtained by measuring the first RS.

[0612] As an embodiment, the third component is PL b,f,c (q d ), the index of the first RS is the q d .

[0613] As an example, the PL b,f,c (q d ) is defined in Section 7 of 3GPP TS 38.213.

[0614] As an embodiment, the second coefficient is configured by RRC signaling.

[0615] As an embodiment, the second coefficient is configured by a higher layer parameter.

[0616] As an embodiment, the second coefficient is configured by a higher layer parameter "alpha".

[0617] As an embodiment, the second coefficient is configured by a higher layer parameter including "alpha" in its name.

[0618] As an embodiment, the second coefficient is configured by MACCE.

[0619] As an embodiment, the second coefficient is configured by DCI.

[0620] As an embodiment, the second coefficient is configured jointly by RRC signaling and MACCE.

[0621] As an embodiment, the second coefficient is configured jointly by RRC signaling and DCI.

[0622] As an embodiment, the second coefficient is alpfa.

[0623] As an embodiment, the definition of the alpfa refers to 3GPP TS 38.331 and TS 38.213.

[0624] As an embodiment, the second coefficient is alpfa for uplink power control.

[0625] As an embodiment, the second coefficient is alpfa used for PUSCH power control.

[0626] As an embodiment, the second coefficient is α b,f,c (j).

[0627] As an embodiment, the α b,f,c For the definition of (j), refer to Section 7 of 3GPP TS 38.213.

[0628] As an embodiment, the first reference power is linearly correlated with the fourth component, the linear coefficient between the first reference power and the fourth component is equal to 1, and the fourth component is related to the number of code blocks carried by the first signal, the size of each code block carried by the first signal, and the number of symbols and subcarriers allocated to the first signal.

[0629] As an embodiment, the fourth component is Δ TF,b,f,c (i).

[0630] As an embodiment, the Δ TF,b,f,c For the definition of (i), refer to Section 7 of 3GPP TS 38.213.

[0631] As an embodiment, the first reference power and the fifth component are linearly correlated, a linear coefficient between the first reference power and the fifth component is equal to 1, and the fifth component is a power control adjustment state.

[0632] As an embodiment, the fifth component is f b,f,c (i,l).

[0633] As an embodiment, the f b,f,c For the definition of (i, l), see 3GPP TS 38.213.

[0634] As an embodiment, the fifth component is equal to the sum of at least one TPC (Transmit Power Control) command value.

[0635] As an embodiment, the first reference power and the first component, the second component, the third component and the fifth component are linearly correlated respectively; the linear coefficients between the first reference power and the first component, the second component and the fifth component are 1 respectively, and the linear coefficients between the first reference power and the third component are the second coefficients respectively.

[0636] Example 17

[0637] Example 17 illustrates a schematic diagram of a first reference power according to an embodiment of the present application; as shown in Figure 17. In Example 17, the first reference power is linearly correlated with the first component, the second component, the third component, the fourth component, and the fifth component; the linear coefficients between the first reference power and the first component, the second component, the fourth component, and the fifth component are each 1, and the linear coefficients between the first reference power and the third component are each the second coefficient. In Figure 17, "μ" indicates linear correlation.

[0638] As an embodiment, for the embodiments of the first component, the second component, the third component, the fourth component, the fifth component and the second coefficient, refer to Example 16.

[0639] Example 18

[0640] Embodiment 18 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in FIG18. In FIG18, the processing device 1800 in the first node includes a first receiver 1801 and a first transmitter 1802.

[0641] In Example 18, the first receiver 1801 receives the first signaling; the first transmitter 1802 sends the first signal.

[0642] In embodiment 18, the first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in the PUSCH, the antenna port for sending the first signal depends on the first SRS resource, and the precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, and K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0643] As an embodiment, the first signaling is a DCI, and the K is equal to 4; the precoding matrix of the first signal is the first matrix, the number of rows of the first matrix is ​​equal to the K, and the number of columns of the first matrix is ​​equal to the number of layers of the first signal; the first node sends the first signal using the same antenna port as the SRS port of the first SRS resource.

[0644] As a sub-embodiment of the above embodiment, the first matrix subset is configurable.

[0645] As a reference embodiment of the above sub-embodiment, the first matrix subset is configured for the first SRS resource.

[0646] As a sub-embodiment of the above embodiment, only when the first signaling indicates the first SRS resource, the first matrix is ​​restricted to the first matrix subset.

[0647] As a sub-embodiment of the above embodiment, the meaning that at most only one row between the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: the mth row of any matrix in the first matrix subset is an all-zero row.

[0648] As a sub-embodiment of the above embodiment, the meaning that at most one row between the n-th row and the m-th row of any matrix in the first matrix subset is a non-zero row includes: for any matrix in the first matrix subset, the m-th row of this matrix is ​​an all-zero row, or the n-th row of this matrix is ​​an all-zero row, or both the m-th row and the n-th row of this matrix are all-zero rows.

[0649] As an embodiment, the first receiver 1801 receives first configuration information; wherein, the first configuration information configures the first SRS resource.

[0650] As an embodiment, the first receiver 1801 receives first configuration information; wherein, the first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0651] As a sub-embodiment of the above embodiment, the first matrix subset is configured for the first SRS resource set.

[0652] As a sub-embodiment of the above embodiment, only when the first signaling indicates one SRS resource in the first SRS resource set, the first matrix is ​​restricted to the first matrix subset.

[0653] As an embodiment, the first matrix subset depends on the first configuration information.

[0654] As an embodiment, the m is a default value.

[0655] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with the first higher layer parameter.

[0656] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with a first higher layer parameter and the value of the first higher layer parameter belongs to a first parameter value set.

[0657] As an embodiment, the transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

[0658] As a sub-embodiment of the above embodiment, the linear value of the first power is equal to the first coefficient multiplied by the linear value of the second power, and the second power is equal to the minimum value of the first reference power and the first power threshold.

[0659] As a sub-embodiment of the above embodiment, the first integer represents the maximum number of ports that can be used to transmit the PUSCH among the K SRS ports of the first SRS resource.

[0660] As an embodiment, the first node is user equipment.

[0661] As an embodiment, the first node is a relay node device.

[0662] As an embodiment, the first receiver 1801 includes at least one of {antenna 452, receiver 454, reception processor 456, multi-antenna reception processor 458, controller / processor 459, memory 460, data source 467} in embodiment 4.

[0663] As an embodiment, the first transmitter 1802 includes at least one of {antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, data source 467} in embodiment 4.

[0664] Example 19

[0665] Embodiment 19 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in FIG19. In FIG19, the processing device 1900 in the second node includes a second transmitter 1901 and a second receiver 1902.

[0666] In Example 19, the second transmitter 1901 sends the first signaling; the second receiver 1902 receives the first signal.

[0667] In embodiment 19, the first signaling indicates a first SRS resource and a first matrix; the first signal is transmitted in the PUSCH, the antenna port for sending the first signal depends on the first SRS resource, and the precoding of the first signal depends on the first matrix; the first SRS resource includes K SRS ports, and K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

[0668] As an embodiment, the first signaling is a DCI, the K is equal to 4; the precoding matrix of the first signal is the first matrix, the number of rows of the first matrix is ​​equal to the K, and the number of columns of the first matrix is ​​equal to the number of layers of the first signal; the sender of the first signal sends the first signal using the same antenna port as the SRS port of the first SRS resource.

[0669] As a sub-embodiment of the above embodiment, the first matrix subset is configurable.

[0670] As a reference embodiment of the above sub-embodiment, the first matrix subset is configured for the first SRS resource.

[0671] As a sub-embodiment of the above embodiment, only when the first signaling indicates the first SRS resource, the first matrix is ​​restricted to the first matrix subset.

[0672] As a sub-embodiment of the above embodiment, the meaning that at most only one row between the nth row and the mth row of any matrix in the first matrix subset is a non-zero row includes: the mth row of any matrix in the first matrix subset is an all-zero row.

[0673] As a sub-embodiment of the above embodiment, the meaning that at most one row between the n-th row and the m-th row of any matrix in the first matrix subset is a non-zero row includes: for any matrix in the first matrix subset, the m-th row of this matrix is ​​an all-zero row, or the n-th row of this matrix is ​​an all-zero row, or both the m-th row and the n-th row of this matrix are all-zero rows.

[0674] As an embodiment, the second transmitter 1901 sends first configuration information; wherein, the first configuration information configures the first SRS resource.

[0675] As an embodiment, the second transmitter 1901 sends first configuration information; wherein, the first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

[0676] As a sub-embodiment of the above embodiment, the first matrix subset is configured for the first SRS resource set.

[0677] As a sub-embodiment of the above embodiment, only when the first signaling indicates one SRS resource in the first SRS resource set, the first matrix is ​​restricted to the first matrix subset.

[0678] As an embodiment, the first matrix subset depends on the first configuration information.

[0679] As an embodiment, the m is a default value.

[0680] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the sender of the first signal is configured with a first higher layer parameter.

[0681] As an embodiment, the first matrix is ​​restricted to the first matrix subset only when the sender of the first signal is configured with a first higher layer parameter and the value of the first higher layer parameter belongs to a first parameter value set.

[0682] As an embodiment, the transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

[0683] As a sub-embodiment of the above embodiment, the linear value of the first power is equal to the first coefficient multiplied by the linear value of the second power, and the second power is equal to the minimum value of the first reference power and the first power threshold.

[0684] As a sub-embodiment of the above embodiment, the first integer represents the maximum number of ports that can be used to transmit the PUSCH among the K SRS ports of the first SRS resource.

[0685] As an embodiment, the second node is a base station device.

[0686] As an embodiment, the second node is user equipment.

[0687] As an embodiment, the second node is a relay node device.

[0688] As an embodiment, the second transmitter 1901 includes at least one of {antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller / processor 475, memory 476} in embodiment 4.

[0689] As an embodiment, the second receiver 1902 includes at least one of {antenna 420, receiver 418, receiving processor 470, multi-antenna receiving processor 472, controller / processor 475, memory 476} in embodiment 4.

[0690] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. The present application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, vehicles, RSUs, wireless sensors, internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNBs, gNBs, TRPs (Transmitter Receiver Points), GNSSs, relay satellites, satellite base stations, aerial base stations, RSUs (Road Side Units), drones, test equipment, such as transceivers or signaling testers that simulate some functions of base stations, and other wireless communication equipment.

[0691] Those skilled in the art will appreciate that the present invention may be implemented in other specific forms without departing from its core or essential characteristics. Therefore, the presently disclosed embodiments should be considered in all respects as illustrative and not restrictive. The scope of the invention is determined by the appended claims, not the foregoing description, and all modifications that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives first signaling, where the first signaling indicates a first SRS resource and a first matrix; A first transmitter sends a first signal, where the first signal is transmitted in a PUSCH, an antenna port for sending the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

2. The first node according to claim 1, wherein: The first receiver receives first configuration information; wherein the first configuration information configures the first SRS resource; or, the first configuration information configures a first SRS resource set, and the first SRS resource is an SRS resource in the first SRS resource set.

3. The first node according to claim 2, characterized in that The first matrix subset depends on the first configuration information.

4. The first node according to any one of claims 1 to 3, characterized in that The m is the default.

5. The first node according to any one of claims 1 to 4, characterized in that The first matrix is ​​restricted to the first matrix subset only when the first node is configured with a first higher layer parameter; Alternatively, the first matrix is ​​restricted to the first matrix subset only when the first node is configured with a first higher layer parameter and the value of the first higher layer parameter belongs to a first parameter value set.

6. The first node according to any one of claims 1 to 5, characterized in that The transmission power of the first signal is a first power, the first power depends on a first coefficient, the first coefficient is equal to the ratio of the number of non-zero power antenna ports sending the first signal and a first integer, and the first integer is less than the number of SRS ports of the first SRS resource.

7. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first signaling, where the first signaling indicates a first SRS resource and a first matrix; a second receiver, receiving a first signal, where the first signal is transmitted in a PUSCH, an antenna port for transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

8. A method in a first node for wireless communication, characterized in that: include: receiving first signaling, where the first signaling indicates a first SRS resource and a first matrix; Sending a first signal, where the first signal is transmitted in a PUSCH, an antenna port for sending the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

9. A method in a second node for wireless communication, characterized in that: include: Sending first signaling, where the first signaling indicates a first SRS resource and a first matrix; receiving a first signal, where the first signal is transmitted in a PUSCH, an antenna port for transmitting the first signal depends on the first SRS resource, and precoding of the first signal depends on the first matrix; The first SRS resource includes K SRS ports, where K is a positive integer greater than 1; the first matrix is ​​restricted to a first matrix subset, the number of rows of any matrix in the first matrix subset is equal to K, and at most only one row in the nth row and the mth row of any matrix in the first matrix subset is a non-zero row, and n and m are respectively positive integers not greater than K, and n is not equal to m.

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