A method for transmitting an uplink data channel, a terminal, a base station and a storage medium

Abstract

The present application provides a method for sending an uplink data channel, a terminal, a base station and a storage medium, the method comprising: determining the parameters of the uplink data channel according to the downlink elements; sending the uplink data channel according to the parameters of the uplink data channel. The technical solution of the present application can achieve the acquisition of the parameters of the uplink data channel in beam communication by updating the beam in another direction according to the beam in one direction.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method for sending an uplink data channel, a terminal, a base station and a storage medium. Background Art

[0002] In beam communication, when there is beam reciprocity between the uplink and downlink of the transmitting and receiving ends, the beam in one direction can be updated according to the beam in another direction, which saves the terminal transmission power and improves the speed of beam alignment at both ends of the transmitting and receiving ends. However, there is a lack of corresponding acquisition scheme for the parameters of the uplink data channel at this time. Summary of the invention

[0003] The main purpose of this embodiment is to propose a method, terminal, base station and storage medium for sending an uplink data channel, aiming to obtain the parameters of the uplink data channel while improving the speed of beam alignment at both ends of the transmitter and receiver.

[0004] The embodiment of the present application provides a method for sending an uplink data channel, based on a terminal, including:

[0005] Determining parameters of an uplink data channel according to the downlink elements;

[0006] The uplink data channel is sent according to the parameters of the uplink data channel.

[0007] The embodiment of the present application further provides a method for sending an uplink data channel, based on a terminal, including:

[0008] Determining a precoding matrix for an uplink data channel;

[0009] Determining a transmit antenna port corresponding to the precoding matrix;

[0010] Mapping the layer data of the uplink data channel to the transmitting antenna port through the precoding matrix;

[0011] Sending the uplink data channel on the antenna port;

[0012] The transmitting antenna port includes a demodulation reference signal port of the uplink data channel.

[0013] The embodiment of the present application further provides a method for sending an uplink data channel, based on a terminal, including:

[0014] Receiving first signaling information, wherein the first signaling information includes a first reference signal resource set;

[0015] receiving second signaling information, and determining a second reference signal resource set according to the second signaling information;

[0016] determining a third reference signal resource set, wherein reference signal resources in the third reference signal resource set belong to the second reference signal resource set;

[0017] Determine a transmit beam of an uplink data channel according to the third reference signal resource set;

[0018] The uplink data channel is transmitted using the determined transmission beam.

[0019] The embodiment of the present application further provides a method for sending an uplink control channel, based on a terminal, including:

[0020] Determine the precoding matrix of the uplink control channel.

[0021] The embodiment of the present application further provides a method for receiving an uplink data channel, based on a base station, comprising:

[0022] The uplink data channel is sent by a receiving terminal according to parameters of the uplink data channel, wherein the parameters of the uplink data channel are set to be determined according to downlink elements.

[0023] The embodiment of the present application further provides a method for sending an uplink data channel, based on a base station, comprising:

[0024] Receiving an uplink data channel from a transmitting antenna port;

[0025] The antenna port corresponds to a precoding matrix of an uplink data channel, and the antenna port includes a demodulation reference signal port of the uplink data channel.

[0026] The embodiment of the present application further provides a method for sending an uplink data channel, based on a base station, comprising:

[0027] Sending first signaling information, wherein the first signaling information includes a first reference signal resource set;

[0028] Sending and receiving second signaling information, instructing the terminal to determine a second reference signal resource set according to the second signaling information;

[0029] An uplink data channel is received by transmitting a beam; wherein the transmitting beam is determined according to a third reference signal resource set, and the reference signal resources in the third reference signal resource set belong to the second reference signal resource set.

[0030] The embodiment of the present application further provides a method for sending an uplink control channel, based on a base station, including:

[0031] Send signaling information instructing the terminal to determine a precoding matrix for an uplink control channel.

[0032] An embodiment of the present application further provides a terminal, the terminal comprising a processor, and the processor is used to implement the uplink data channel sending method provided in the embodiment.

[0033] An embodiment of the present application further provides a base station, the base station comprising a processor, the processor being used to implement the uplink data channel sending method provided in the embodiment.

[0034] An embodiment of the present application also provides a storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the uplink data channel sending method provided in the embodiment.

[0035] The uplink data channel sending method, terminal, base station and storage medium provided in the embodiments of the present application determine the parameters of the uplink data channel through downlink elements, thereby solving the problem that the parameters of the uplink data channel cannot be obtained when the beams at both ends are aligned by updating the beam in one direction based on the beam in another direction, thereby realizing the acquisition of the parameters of the uplink data channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a flowchart of a method for sending an uplink data channel based on a terminal provided in an embodiment of the present application.

[0037] Figure 2 This is a flowchart of a method for sending an uplink data channel based on a terminal provided in an embodiment of the present application.

[0038] Figure 3 This is a flowchart of a method for sending an uplink data channel based on a terminal provided in an embodiment of the present application.

[0039] Figure 4 This is a flowchart of a method for sending an uplink data channel based on a terminal provided in an embodiment of the present application.

[0040] Figure 5 It is a flowchart of a method for sending an uplink data channel based on a base station provided in an embodiment of the present application.

[0041] Figure 6 It is a flowchart of a method for sending an uplink data channel based on a base station provided in an embodiment of the present application.

[0042] Figure 7 It is a flowchart of a method for sending an uplink data channel based on a base station provided in an embodiment of the present application.

[0043] Figure 8 It is a flowchart of a method for sending an uplink data channel based on a base station provided in an embodiment of the present application.

[0044] Fig. 9 It is a structural diagram of a terminal provided in an embodiment of the present application.

[0045] Fig.10 It is a structural diagram of a base station provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0047] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no special meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0049] In beam communication, how to ensure the beam alignment at both ends of the transmitter and receiver in real time is the core technical means to improve system performance. For example, the transmit beam of the uplink data channel PUSCH (Physical Uplink Shared Channel) can be obtained based on the downlink reference signal. Before PUSCH is sent, the uplink measurement reference signal resources corresponding to PUSCH are not sent. At this time, there is no effective method to obtain the parameters of PUSCH, such as the transmit antenna port after precoding, the precoding matrix and the power parameters.

[0050] like Figure 1 As shown, this embodiment provides a method for sending an uplink data channel, based on a terminal, including:

[0051] S110, determining parameters of an uplink data channel according to the downlink element;

[0052] S120: Send the uplink data channel according to the parameters of the uplink data channel.

[0053] The terminal determines the parameters of the uplink data channel according to the downlink elements, and can use the determined parameters of the uplink data channel to send the uplink data channel. Then, in order to determine the parameters of the uplink data channel according to the downlink elements, the terminal can determine the parameters of the uplink data channel according to the pre-established correspondence between the downlink elements and the parameters of the uplink data channel.

[0054] In one implementation, the parameters of the uplink data channel include a precoding matrix;

[0055] The precoding matrix satisfies one of the following characteristics:

[0056] The precoding matrix is ​​an identity matrix;

[0057] The number of rows corresponding to the precoding matrix is ​​the number of transmitting antenna ports of the uplink data channel;

[0058] The rows of the precoding matrix correspond to demodulation reference signal ports of an uplink data channel.

[0059] In one implementation, the parameters of the uplink data channel include a transmit antenna port after precoding, and the transmit antenna port satisfies at least one of the following characteristics:

[0060] The transmitting antenna port includes a demodulation reference signal port of the uplink data channel;

[0061] The transmitting antenna port is obtained according to the number of transmitting antenna ports of the uplink data channel.

[0062] In one implementation, the number of transmitting antenna ports includes at least one of the following features:

[0063] There is a corresponding relationship between the number of the transmitting antenna ports and the downlink element; wherein different downlink reference signal resources may correspond to different numbers of transmitting antennas;

[0064] There is a corresponding relationship between the number of the transmitting antenna ports and the beam indication information, wherein the beam indication information includes the indication information of the downlink element; different downlink reference signal resources may correspond to different numbers of transmitting antennas;

[0065] There is a corresponding relationship between the number of the transmitting antenna ports and the partial bandwidth (Bandwidth Part, BWP);

[0066] There is a corresponding relationship between the number of the transmitting antenna ports and the uplink data channel configuration information PUSCH-configure;

[0067] There is a corresponding relationship between the number of the transmitting antenna ports and the serving cell;

[0068] There is a corresponding relationship between the number of the transmitting antenna ports and the service cell group;

[0069] There is a corresponding relationship between the number of the transmitting antenna ports and the control channel resource group;

[0070] There is a corresponding relationship between the number of the transmitting antenna ports and the first communication node, wherein the first communication node is a communication node that sends the uplink data channel;

[0071] There is a correlation between the number of the transmitting antenna ports and the capability information reported by the first communication node.

[0072] In one implementation, there is a corresponding relationship between the number of the transmitting antenna ports and the control channel resource group, including at least one of the following:

[0073] The control channel resource group is a control channel resource group corresponding to the preset downlink element;

[0074] The control channel resource group is a control channel resource group where a control channel for scheduling the uplink data channel is located.

[0075] In one implementation, the parameter has at least one of the following characteristics:

[0076] There is a corresponding relationship between the parameters and the downlink elements;

[0077] There is a corresponding relationship between the parameter and the first information, wherein the first information includes the downlink element and at least one of the following information: a transmitting antenna port, a transmitting antenna port group, an uplink transmitting panel number, an uplink measurement reference signal resource, and an uplink measurement reference signal resource group;

[0078] There is a corresponding relationship between the parameter and the codepoint of the beam indication field, wherein the beam indication field includes an uplink reference signal resource or the downlink element;

[0079] There is a corresponding relationship between the parameter and a control-resource set (CORESET) group, wherein the CORESET group is a CORESET group corresponding to the downlink element, and the downlink element includes a downlink reference signal resource.

[0080] In one implementation, the parameters include at least one of the following: a spatial transmit filter, a precoding matrix, a power parameter, demodulation reference signal port information, a transmit antenna port, the number of transmit antenna ports, a transmit antenna port group, an uplink transmit panel number, and the purpose of the measurement reference signal resource set corresponding to the uplink data channel.

[0081] In one implementation, the downlink element includes at least one of the following: a downlink channel, a downlink reference signal resource, and a CORESET group.

[0082] In one implementation, the CORESET group satisfies one of the following characteristics:

[0083] The CORESET group includes a control channel for scheduling the downlink element;

[0084] The CORESET group includes a control channel for scheduling the uplink data channel.

[0085] In one implementation, the downlink element includes the downlink reference signal resource;

[0086] The transmission beam of the uplink data channel is obtained according to the downlink reference signal resource;

[0087] The beam information includes one of the following: a transmitting spatial filter and a precoding matrix.

[0088] like Figure 2 As shown, this embodiment also provides a method for sending an uplink data channel, based on a terminal, including:

[0089] S210, determining a precoding matrix for an uplink data channel;

[0090] S220, determining a transmitting antenna port corresponding to the precoding matrix;

[0091] S230, mapping the layer data of the uplink data channel to the transmitting antenna port through the precoding matrix;

[0092] S240, sending the uplink data channel on the antenna port;

[0093] The transmitting antenna port includes a demodulation reference signal port of the uplink data channel.

[0094] The antenna port after the uplink data channel PUSCH precoding is the demodulation reference signal port of the PUSCH. The layer-to-port mapping is performed based on a preset formula.

[0095] In one implementation, the precoding matrix includes at least one of the following features:

[0096] The precoding matrix is ​​an identity matrix;

[0097] The precoding matrix is ​​obtained according to downlink reference signal resources.

[0098] In one implementation, the transmit beam of the uplink data channel is obtained according to a downlink reference signal resource;

[0099] The transmit beam includes at least one of a spatial transmit filter and a precoding matrix.

[0100] Determine a precoding matrix W for the PUSCH according to a reference signal type indicated by a beam information indication field in the PUSCH and / or the number of spatial relation reference signal resources corresponding to a DMRS port of the PUSCH;

[0101] The W satisfies the following characteristics:

[0102] When the beam indication field indicates an uplink reference signal and it is SRS for codebook, the PUSCH precoding matrix W is obtained according to the TPMI indicated in the DCI;

[0103] In other cases, W is the unit matrix;

[0104] When the beam indication field indicates an uplink reference signal and it is SRS for codebook, the PUSCH precoding matrix W is obtained according to the TPMI indicated in the DCI;

[0105] When the beam indication field indicates that the uplink reference signal is SRS for non codebook and one DMRS port corresponds to one spatial relation reference signal resource on one RE, the PUSCH precoding matrix W is the identity matrix;

[0106] When the beam indication field indicates that the uplink reference signal is SRS for non codebook and one DMRS port corresponds to multiple spatial relation reference signal resources on one RE, the number of rows of the PUSCH precoding matrix W is greater than the number of columns. When the beam indication field indicates a downlink reference signal, the PUSCH precoding matrix W is a unit matrix.

[0107] When the beam indicator field indicates a downlink reference signal, the PUSCH precoding matrix W is the unit matrix;

[0108] When the beam indication field indicates a downlink reference signal, the PUSCH precoding matrix W is determined according to the downlink reference signal resources and the number of PUSCH transmitting antenna ports.

[0109] The number of rows of the PUSCH precoding matrix W is greater than the number of columns, including that W is a lower triangular matrix, and only one element value in each row of W is 1.

[0110] The number of rows of the PUSCH precoding matrix W is greater than the number of columns, and the first Element to The element is 1, and the rest are 0, where B i is the number of spatial relation reference signal resources corresponding to the i-th DMRS port.

[0111] The number of transmit antenna ports is configured in the following signaling information:

[0112] UE-Specific control signaling;

[0113] In serving cell-configure configuration information;

[0114] In BWP-configure configuration information;

[0115] PUSCH-configure configuration information;

[0116] A TCI state configuration information;

[0117] a code point of beam indicator field configuration information.

[0118] like Figure 3 As shown, this embodiment also provides a method for sending an uplink data channel, based on a terminal, including:

[0119] S310. Receive first signaling information, wherein the first signaling information includes a first reference signal resource set;

[0120] S320. Receive second signaling information, and determine a second reference signal resource set according to the second signaling information;

[0121] S330. Determine a third reference signal resource set, wherein the reference signal resources in the third reference signal resource set belong to the second reference signal resource set;

[0122] S340, determining a transmit beam of an uplink data channel according to the third reference signal resource set;

[0123] S350: Use the determined transmission beam to transmit the uplink data channel.

[0124] In one implementation, the second signaling information includes at least one of the following:

[0125] A second reference signal resource index included in the second reference signal resource set, wherein the reference signal resources in the second reference signal resource set belong to the first reference signal resource set;

[0126] A downlink reference signal resource index corresponding to the second reference signal resource set, wherein a transmit beam of a reference signal resource in the second reference signal resource set is obtained according to the one downlink reference signal resource;

[0127] A first reference signal resource set index, wherein the second reference signal resource set is a first reference signal resource set corresponding to the first reference signal resource set index, and the first signaling information includes at least one of the first reference signal resource sets.

[0128] In one implementation, the second reference signal resource set and / or the third reference signal resource set includes at least one of the following:

[0129] Uplink measurement reference signal resource set;

[0130] A set of uplink measurement reference signal resources used as non-codebook;

[0131] A collection of uplink measurement reference signal resources used as codebook;

[0132] The reference signal resource set corresponding to the beam indicator field in the DCI that schedules the uplink data channel.

[0133] In one implementation, the first signaling information includes RRC signaling information;

[0134] The second signaling information includes MAC-CE signaling information.

[0135] In an implementation manner, before determining the transmit beam of the uplink data channel according to the third reference signal resource set, the method further includes:

[0136] Receive third signaling information, wherein the third signaling information includes a third reference signal resource set, and wherein the third signaling information includes DCI signaling information.

[0137] In one implementation, the transmit beam includes at least one of a spatial transmit filter and a precoding matrix.

[0138] like Figure 4 As shown, this embodiment also provides a method for sending an uplink control channel, based on a terminal, including:

[0139] S410: Determine a precoding matrix for an uplink control channel.

[0140] In one implementation, the precoding matrix of the uplink control channel is determined when one of the following conditions is met:

[0141] The number of ports included in the transmit beam reference signal resource corresponding to the uplink control channel is greater than 1;

[0142] The number of transmitting antennas of the uplink control channel is greater than one.

[0143] In one implementation, determining a precoding matrix of an uplink control channel includes:

[0144] Determine a precoding matrix of the uplink control channel according to the signaling information;

[0145] In one implementation, the signaling information satisfies one of the following characteristics:

[0146] The signaling information includes a precoding matrix corresponding to an uplink control channel resource;

[0147] The signaling information includes a precoding matrix corresponding to an uplink control channel resource group, wherein the precoding matrix of each uplink control channel resource in the uplink control channel resource group is the same.

[0148] In one implementation, a precoding matrix is ​​used to map the layer data of the uplink control channel to the transmitting antenna port.

[0149] In one implementation, the number of layers of the uplink control channel is greater than one.

[0150] like Figure 5 As shown, this embodiment also provides a method for receiving an uplink data channel, based on a base station, including:

[0151] S510. The uplink data channel sent by the receiving terminal according to the parameters of the uplink data channel, wherein the parameters of the uplink data channel are set to be determined according to downlink elements.

[0152] like Figure 6 As shown, this embodiment also provides a method for sending an uplink data channel, based on a base station, including:

[0153] S610, receiving an uplink data channel from a transmitting antenna port;

[0154] The antenna port corresponds to a precoding matrix of an uplink data channel, and the antenna port includes a demodulation reference signal port of the uplink data channel.

[0155] like Figure 7 As shown, this embodiment also provides a method for sending an uplink data channel, based on a base station, including:

[0156] S710. Send first signaling information, where the first signaling information includes a first reference signal resource set;

[0157] S720. Send and receive second signaling information, instructing the terminal to determine a second reference signal resource set according to the second signaling information;

[0158] S730. Receive an uplink data channel by transmitting a beam; wherein the transmitting beam is determined according to a third reference signal resource set, and the reference signal resources in the third reference signal resource set belong to the second reference signal resource set.

[0159] like Figure 8 As shown, this embodiment also provides a method for sending an uplink control channel, based on a base station, including:

[0160] S810: Send signaling information instructing the terminal to determine a precoding matrix for an uplink control channel.

[0161] This application provides the following implementation methods:

[0162] Example 1

[0163] In this embodiment, the terminal determines the parameters of the uplink data channel according to the downlink elements; uses the determined parameters to send the uplink data channel; the downlink elements include at least one of the following: a downlink channel, a downlink reference signal resource, and a CORESET group.

[0164] Establish a correspondence between downlink measurement reference signal resource elements and parameters; or establish a correspondence between codepoints in a beam indication field and parameters; or establish a correspondence between downlink elements and first information and parameters, wherein the first information includes one of the following: a transmitting antenna port, a transmitting antenna port group, an uplink panel number, an uplink measurement reference signal resource, an uplink measurement reference signal resource group; or establish a correspondence between downlink reference signal resources and a transmitting antenna port group and parameters; or establish a correspondence between a CORESET group and parameters, wherein the control channel resource group is a CORESET group corresponding to the downlink reference signal resource, or a CORESET group where a control channel for scheduling the uplink data channel is located.

[0165] The parameters include at least one of the following: spatial transmit filter, precoding matrix, power parameter, demodulation reference signal port information, transmit antenna port, transmit antenna port group, number of transmit antenna ports, panel number, the power parameter includes at least one of the following: target received power p0, path loss reference signal, path compensation factor α, the power parameter is the power parameter of the uplink data channel.

[0166] In this embodiment, the antenna port after the uplink data channel PUSCH precoding is the demodulation reference signal port of the PUSCH. Specifically, the terminal performs layer-to-port mapping based on the following formula:

[0167]

[0168] Or precoding based on the following formula:

[0169]

[0170] where [p0, p1, ..., p v-1 ] is the port number of the DMRS (Demodulation Reference Signal) of the uplink PUSCH, such as [p0, p1, ..., p v-1 ] belongs to [0,1,...7,....,11]. After precoding, the terminal After multiplication by power, it is mapped to the physical resource block (PRB) resources at the antenna ports [p0, p1, ..., p v-1 ] sends PUSCH to the base station. j (i) is the j-th layer data of PUSCH.

[0171] Optionally, in formula (2), W is a unit matrix.

[0172] Example 2

[0173] In this embodiment, the precoding matrix W used for PUSCH precoding, that is, W in formula (2), is determined according to the reference signal type indicated by the beam information indication field in the PUSCH and / or the number of spatial relationship reference signal resources corresponding to a DMRS port of the PUSCH. The types of reference signals include uplink reference signals and downlink reference signals. The transmit spatial precoder (or transmit spatial filter) of the PUSCH is obtained according to the reference signal indicated by the beam indication field. When the beam indication field indicates that the uplink measurement reference signal resource indicates SRI, and the SRS resource belongs to the codebook SRS set, the W is obtained according to the TPMI indicated in the DCI. For example, when the beam indication field indicates that the uplink measurement reference signal resource indicates SRI, and the SRS resource belongs to the non codebook SRS set, and one DMRS port corresponds to one spatial relationship reference signal resource on one RE, the W is a unit matrix. When the beam indication field indicates that the uplink reference signal is SRS for non codebook and a DMRS port corresponds to multiple spatial relationship reference signal resources on one RE, the number of rows of the PUSCH precoding matrix W is greater than the number of columns. When the beam indication field indicates a downlink reference signal, the PUSCH precoding matrix W is a unit matrix, for example, W is a lower triangular matrix, and only one element value on each row of W is 1. Furthermore, the value of the first element in the i-th column of W is Element to The element is 1, and the rest are 0, where B i is the number of spatial relationship reference signal resources corresponding to the i-th DMRS port (that is, the number of reference signal resources indicated for the i-th DMRS port in the beam information); when the beam indication field indicates a downlink measurement reference signal resource indication, W is a unit matrix, or the number of transmitting antenna ports of the uplink data channel predetermined by the base station and the terminal, and W is obtained according to the downlink measurement reference signal resources and the number of uplink transmitting antenna ports. For example, the terminal obtains the H matrix based on the downlink measurement reference signal resources, and H is a matrix of R*T dimensions, where R is the number of terminal receiving antennas, and T is the number of ports included in the downlink measurement reference signal resources. The terminal is related to the matrix H*H H Do SVD decomposition H*H H =UDV′, the eigenvector corresponding to the maximum eigenvalue after the SVD of this correlation matrix is ​​W=V(:, 1:L), where L is the number of PUSCH layers. In short, W is obtained based on the downlink measurement reference signal resources and the number of uplink transmission antenna ports. Or W is obtained based on the downlink measurement reference signal resources.

[0174] The number of transmitting antenna ports of the above-mentioned uplink data channel can be configured at one of the following levels (that is, there is a corresponding relationship between the number of transmitting antenna ports and at least one of the following information): UE-Specific, serving cell-specific, BWP-specific, PUSCH-Configure-Specific, TCI state-Specific, code point of beam indicator field, transmitting beam reference signal resource-Specific, serving cell group-Specific, CORESET pool-Specific, panel-Specific, and further, the number of transmitting antenna ports of the non-uplink data channel can also be determined according to the capability information reported by the terminal.

[0175] Of course, a codepoint of a beam indication field can also include SRI and SSBI / CRI. The PUSCH part corresponding to SRI obtains W according to SRI, and the part corresponding to SSBI / CRI obtains W according to SSBI / CRI.

[0176] In this document, the beam indication field may be an SRI indication field in a DCI, or a spatial relationship reference signal resource indication field, or an RI (resource indicator), or an indication field called another name, and the beam indication field indicates at least one of the following information: SRI, SSBI, CRI (CSI-RS resource indicator). Or the beam indication field indicates a TCI state, and the TCI state includes at least one of the following information: one of SRI, SSBI, CRI

[0177] In this embodiment, the terminal obtains a transmission beam of an uplink data channel according to a downlink reference resource, and obtains at least one of the following uplink data channels according to the downlink reference signal resource: antenna port / antenna port group / panel number.

[0178] Specifically, the parameters of the uplink data channel are obtained according to the CORESET group corresponding to the downlink reference signal resource and the corresponding relationship between the CORESET group and the parameters of the uplink data channel.

[0179] Obtain panel information according to downlink reference signal resources;

[0180] The control channel resource group is a control channel resource group where a control channel for scheduling the uplink data channel is located.

[0181] Example 3

[0182] In this embodiment, the port number after PUSCH precoding is determined according to the reference signal type indicated by the beam information indication field in the PUSCH, that is, [p0, p1, ..., p in formula (1) or (2)] v-1 ], where the types of reference signals include uplink reference signals and downlink reference signals.

[0183] Specifically, when the beam indication field of the PUSCH indicates SRI, the antenna port number after the PUSCH is precoded is the SRS port number corresponding to the SRS resource, and when the beam indication field of the PUSCH indicates a downlink reference signal resource, the antenna port number after the PUSCH is precoded is the DMRS port number of the PUSCH. Preferably, at this time, the precoding matrix from the layer to the antenna port is a unit matrix. Or when the beam indication field of the PUSCH indicates a downlink reference signal resource, the antenna port number after the PUSCH is precoded is the antenna port number of the PUSCH, wherein the antenna port number of the PUSCH is determined according to the number of antenna ports of the PUSCH, and is not obtained according to the SRS resource. That is, at this time, the antenna port number of the PUSCH is independent of any SRS resource. The terminal does not need to send SRS resources before sending PUSCH. The number of PUSCH transmit antenna ports can be configured at one of the following levels: UE-Specific, serving cell-specific, BWP-specific, PUSCH-Specific, TCIstate-Specific, code point of beam indicator field. Furthermore, the number of uplink transmit antennas can also be determined based on the capability information reported by the terminal.

[0184] Specifically, the base station indicates the beam information of the PUSCH in the beam indication field through the DCI, and the terminal obtains the spatial transmit filter information for sending the PUSCH according to the beam information, wherein the beam information indicates the downlink reference signal information or the uplink reference signal information. When the indication is SRI (SRS resource indicator), the [p0, p1, ..., p v-1 ] is the antenna port number in the SRS resource corresponding to the SRI, that is, the SRS antenna port number. For example, when the SRS resource belongs to the SRS set for codebook, the antenna port number of the SRS is 1000+i, where i is the port number index in the SRS resource. For example, an SRS resource includes 4 SRS ports, and the port numbers of these four SRS ports are {1000, 1001, 1002, 1003}. When the SRS resource belongs to the SRS set for non-codebook, the antenna port number of the SRS is 1000+i, where i is the index of the SRS resource in the SRS resource set. For example, an SRS resource set includes 2 SRS resources, each SRS resource includes an SRS port, and the SRS port numbers in the two SRS resources are {1000, 1001} respectively. When the indication is CRI / SSBI, the [p0, p1, ..., p v-1] is the DMRS port number of PUSCH, such as [p0, p1, ..., p v-1 ] is the uplink DMRS port number. Or when the indication is CRI / SSBI, the transmit antenna port number of PUSCH, wherein the transmit antenna port number is obtained according to the number of transmit antenna ports of PUSCH, such as [p0, p1, ..., p v-1 ] is {3000,30001,3002,30003} or other numbers.

[0185] Example 4

[0186] In this embodiment, a precoding matrix TPMI is sent for a PUCCH resource indication. Specifically, the spatial relationship information of the PUCCH resource includes an SRS resource, and the SRS resource includes more than one SRS port. The TPMI indicates the TPMI used for the PUCCH resource, wherein the TPMI indicates a T*L matrix, wherein T is the number of ports of the SRS resource, and L is the number of layers of the PUCCH resource, for example, L is equal to 1.

[0187] Example 5

[0188] In this embodiment, MAC-CE activates or updates a spatial relationship reference signal resource set, for example, the spatial relationship reference signal resource set is one of the following: SRS set for codebook, SRS set for non codebook, RSset for non codebook. When the spatial relationship reference signal resource set is RS set for non codebook, the set may include downlink reference signal resources and may also include an uplink reference signal set. For example, MAC-CE includes reference signal resource index information in the spatial relationship reference signal resource set. When the spatial relationship reference signal set includes SRS set for non codebook, the MAC-CE may also include the accoiated_CSI-RS reference signal resource index information of the SRS set for non codebook, wherein the spatial spatial transmission filter of the SRS resource in the SRS set for non codebook is obtained according to the accoiated_CSI-RS.

[0189] In one embodiment, when MAC-CE activates or updates a spatial relationship reference signal resource set, and the spatial relationship reference signal resource set includes a downlink reference signal resource, the MAC-CE includes at least one of the following information on the downlink reference signal resource: serving cell index information, BWP index.

[0190] Example 6

[0191] In this embodiment, a correspondence between a CORESET group and a measurement reference signal resource set corresponding to an uplink data channel is established. For example, each CORESET group corresponds to an SRS resource set. An SRS resource subset is selected from the SRS resource set by scheduling the PDCCH of the uplink data channel. For example, an SRS resource subset is selected from the SRS resource set through the SRI field in the DCI. The transmit beam of the PUSCH is determined according to the selected SRS resource subset, wherein the transmit beam includes at least one of the following of the PUSCH: a precoding matrix, a spatial transmit filter, and a transmit antenna port after precoding.

[0192] The purpose of the measurement reference signal resource set corresponding to each CORESET group can be configured separately, for example, the purpose of the SRS resource set corresponding to CORESET group 0 is non-codebook, and the purpose of the SRS resource set corresponding to CORESET group 1 is codebook.

[0193] Or the SRS resource sets corresponding to the two CORESET groups are the same, but the purpose of the SRS resources corresponding to each CORESET group is different. The purpose of the SRS resource set corresponding to CORESET group 0 is non codebook, while the purpose of the SRS resource set corresponding to CORESET group 1 is codebook.

[0194] This embodiment provides a terminal, such as Fig. 9 The terminal 900 shown includes a processor 901 and a memory 902, and the processor 901 is used to implement the uplink data channel transmission method provided in the embodiment. For example, the processor 901 executes one or more programs stored in the memory 902 to implement the uplink data channel transmission method provided in the embodiment.

[0195] This embodiment provides a base station, such as Fig.10 The base station 1000 shown includes a processor 1001 and a memory 1002, and the processor 1001 is used to implement the uplink data channel transmission method provided in the embodiment. For example, the processor 1001 executes one or more programs stored in the memory 1002 to implement the uplink data channel transmission method provided in the embodiment.

[0196] This embodiment provides a storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the uplink data channel sending method provided in the embodiment.

[0197] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0198] In hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0199] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited thereby. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. A method for transmitting an uplink data channel, characterized in that: Terminal-based, including: Receiving first signaling information, wherein the first signaling information includes a first reference signal resource set, wherein the first signaling information is RRC signaling information; receiving second signaling information, and determining a second reference signal resource set according to the second signaling information, wherein the second signaling information is MAC-CE signaling information; and the reference signal resources in the second reference signal resource set belong to the first reference signal resource set; receiving third signaling information, wherein the third signaling information includes information of a third reference signal resource set, wherein the third signaling information is DCI signaling information, and the reference signal resources in the third reference signal resource set belong to the second reference signal resource set; Determine a transmit beam of an uplink data channel according to the third reference signal resource set; The uplink data channel is transmitted using the determined transmission beam.

2. The method according to claim 1, characterized in that The second signaling information includes at least one of the following: a second reference signal resource index included in the second reference signal resource set, and a downlink reference signal resource index corresponding to the second reference signal resource set, wherein a transmit beam of a reference signal resource in the second reference signal resource set is obtained according to the downlink reference signal resource; A first reference signal resource set index, wherein the second reference signal resource set is a first reference signal resource set corresponding to the first reference signal resource set index, and the first signaling information includes at least one of the first reference signal resource sets.

3. The method according to claim 1 or 2, characterized in that: The second reference signal resource set and / or the third reference signal resource set includes at least one of the following: Uplink measurement reference signal resource set; A set of uplink measurement reference signal resources used as non-codebook; A collection of uplink measurement reference signal resources used as codebook; The reference signal resource set corresponding to the beam indicator field in the DCI that schedules the uplink data channel.

4. The method according to claim 1 or 2, characterized in that: The transmit beam includes at least one of a spatial transmit filter and a precoding matrix.

5. A method for transmitting an uplink data channel, characterized in that: Based on base station, including: Sending first signaling information, wherein the first signaling information includes a first reference signal resource set, wherein the first signaling information is RRC signaling information; Sending second signaling information to instruct the terminal to determine a second reference signal resource set according to the second signaling information, wherein the second signaling information is MAC-CE signaling information; and the reference signal resources in the second reference signal resource set belong to the first reference signal resource set; Sending third signaling information, wherein the third signaling information includes a third reference signal resource set, wherein the third signaling information is DCI signaling information; An uplink data channel is received by transmitting a beam; wherein the transmitting beam is determined according to a third reference signal resource set, and the reference signal resources in the third reference signal resource set belong to the second reference signal resource set.

6. The method according to claim 5, characterized in that The second signaling information includes at least one of the following: A second reference signal resource index included in the second reference signal resource set; a downlink reference signal resource index corresponding to the second reference signal resource set, wherein a transmit beam of a reference signal resource in the second reference signal resource set is obtained according to the downlink reference signal resource; A first reference signal resource set index, wherein the second reference signal resource set is a first reference signal resource set corresponding to the first reference signal resource set index, and the first signaling information includes at least one of the first reference signal resource sets.

7. The method according to claim 5 or 6, characterized in that: The second reference signal resource set and / or the third reference signal resource set includes at least one of the following: Uplink measurement reference signal resource set; A set of uplink measurement reference signal resources used as non-codebook; A collection of uplink measurement reference signal resources used as codebook; The reference signal resource set corresponding to the beam indicator field in the DCI that schedules the uplink data channel.

8. The method according to claim 5 or 6, characterized in that: The transmit beam includes at least one of a spatial transmit filter and a precoding matrix.

9. A terminal, characterized in that: The terminal includes a processor, and the processor is used to implement the uplink data channel sending method as described in any one of claims 1-4.

10. A base station, characterized in that: The base station includes a processor, and the processor is used to implement the uplink data channel sending method as described in any one of claims 5-8.

11. A storage medium for computer-readable storage, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the uplink data channel sending method according to any one of claims 1-8.

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