Method and terminal device for uplink data transmission

Abstract

The embodiments of the present application relate to a method and a terminal device for uplink data transmission. The method comprises: receiving first downlink control information DCI sent by a network device for scheduling a first uplink data transmission, the first DCI comprising first reference signal resource set indication information and first reference signal resource indication information; determining a first reference signal resource set according to the first reference signal resource set indication information, the first reference signal resource set comprising at least one reference signal resource; determining at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; determining a transmission parameter used for the first uplink data transmission according to the at least one first reference signal resource. The method and the terminal device for uplink data transmission according to the embodiments of the present application can improve the efficiency of uplink data transmission.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method and terminal device for uplink data transmission. Background Art

[0002] In the new radio (NR) system, the terminal device can use multiple antenna array blocks (panels) for uplink data transmission. A panel contains a group of physical antennas, and each panel has an independent RF channel. The terminal device can transmit data on multiple panels at the same time, but because the channel conditions corresponding to different panels are different, different panels need to use different transmission parameters according to their respective channel information. For example, different panels can have different beams, precoding and transmission power.

[0003] In order to obtain these transmission parameters, different sounding reference signal (SRS) resource sets need to be configured for different panels to obtain uplink channel information. Therefore, how to enable the terminal device to obtain the SRS resource set corresponding to the current data transmission and the transmission parameters used is a problem that needs to be solved. Summary of the invention

[0004] The present application provides a method and terminal device for uplink data transmission, which can flexibly configure transmission parameters and improve data transmission efficiency.

[0005] In a first aspect, a method for uplink data transmission is provided, the method comprising: receiving first downlink control information (DCI) sent by a network device for scheduling first uplink data transmission, the first DCI comprising first reference signal resource set indication information and first reference signal resource indication information; determining a first reference signal resource set according to the first reference signal resource set indication information, the first reference signal resource set comprising at least one reference signal resource; determining at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; and determining a transmission parameter used for the first uplink data transmission according to the at least one first reference signal resource.

[0006] Therefore, in the method for uplink data transmission of an embodiment of the present application, a terminal device receives the DCI sent by a network device, schedules uplink transmissions corresponding to different panels through different DCIs, and determines the uplink channel information of the corresponding panel according to different resource sets indicated in different DCIs. This allows multiple panels to use independent transmission parameters for data transmission, thereby improving the flexibility of multi-panel transmission and uplink spectrum efficiency.

[0007] It should be understood that the first reference signal resource set indication information and the first reference signal resource indication information may be independently coded or jointly coded.

[0008] In combination with the first aspect, in an implementation manner of the first aspect, the method also includes: receiving first configuration information sent by the network device, the first configuration information being used to indicate multiple reference signal resource sets; determining the first reference signal resource set according to the first reference signal resource set indication information includes: determining the first reference signal resource set among the multiple reference signal resource sets according to the first reference signal resource set indication information.

[0009] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the multiple reference signal resource sets are used for reference signal transmission on multiple antenna array blocks.

[0010] In combination with the first aspect and its above-mentioned implementation method, in another implementation method of the first aspect, before receiving the first configuration information sent by the network device, the method also includes: sending antenna array block number information to the network device, the antenna array block number information is used to indicate the number of antenna array blocks of the terminal device, and the antenna array block number information is used by the network device to determine the number of the multiple reference signal resource sets.

[0011] In combination with the first aspect and the above implementation manner, in another implementation manner of the first aspect, the multiple reference signal resource sets correspond one-to-one to multiple phase tracking reference signal (PTRS) ports.

[0012] In combination with the first aspect and its above-mentioned implementation method, in another implementation method of the first aspect, the method also includes: determining a first PTRS port corresponding to the first reference signal resource set based on the correspondence between the multiple reference signal resource sets and the multiple PTRS ports; and transmitting an uplink PTRS through the first PTRS port on the physical resources used for the first uplink data transmission.

[0013] The network device configures different PTRS ports for different reference signal resource sets corresponding to different panels, so that the phase changes of the corresponding panels can be tracked.

[0014] In combination with the first aspect and its above-mentioned implementation method, in another implementation method of the first aspect, the method also includes: determining a first PUSCH power control parameter group corresponding to the first reference signal resource set according to the correspondence between the multiple reference signal resource sets and the multiple physical uplink shared channel (PUSCH) power control parameter groups.

[0015] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the method further includes: determining, in the first PUSCH power control parameter group, a power control parameter used for the PUSCH transmission indicated by the first DCI according to the first reference signal resource indication information.

[0016] The network device can configure different power control parameter groups for different panels, so that the signals transmitted on different panels can be independently power controlled.

[0017] In combination with the first aspect and the above implementation manner, in another implementation manner of the first aspect, the first reference signal resource indication information includes an index of the at least one first reference signal resource.

[0018] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the first reference signal resource indication information includes a bitmap of the first reference signal resource set, and the bits in the bitmap correspond one-to-one to the reference signal resources in the first reference signal resource set.

[0019] In combination with the first aspect and its above-mentioned implementation method, in another implementation method of the first aspect, the transmission parameters used for the first uplink data transmission include: a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter and at least one of an antenna array block.

[0020] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is a sounding reference signal SRS resource, and determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the number of antenna ports of the SRS resource and first precoding matrix indicator (PMI) information; based on the correspondence between the number of antenna ports, PMI information and the precoding matrix, determining the precoding matrix corresponding to the number of antenna ports of the SRS resource and the first PMI information as the precoding matrix used for the first uplink data transmission.

[0021] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the first DCI includes the first PMI information.

[0022] Therefore, based on the method, a precoding matrix used for the first uplink data transmission scheduled by the first DCI is obtained, so that data transmission on different panels can use independent precoding matrices, thereby increasing the flexibility of uplink scheduling.

[0023] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is an SRS resource, and determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of transmission layers for the first uplink data transmission.

[0024] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is an SRS resource, and determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the precoding matrix used for transmitting the SRS in the SRS resource as the precoding matrix used for the first uplink data transmission.

[0025] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is K SRS resources, K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the precoding matrix used to transmit the SRS in the SRS resources is determined as the precoding matrix used for the first uplink data transmission, including: determining the K precoding matrices used by the K SRS resources; determining the K precoding matrices as the precoding matrices of the K data transmission layers, and the K precoding matrices correspond one-to-one to the K data transmission layers.

[0026] Therefore, uplink transmission corresponding to different SRS resources can use the same precoding matrix as that on the SRS resource, so as to match the channel information of the panel transmitting the corresponding data.

[0027] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is at least one SRS resource, and determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0028] For example, if the at least one SRS resource is one SRS resource, the terminal device may use the number of antenna ports of the one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0029] For another example, if the at least one SRS resource is a plurality of SRS resources, wherein each SRS resource is a single-port SRS resource, the terminal device may determine the number of the plurality of SRS resources as the number of antenna ports used for the first uplink data transmission.

[0030] Therefore, the method is used to obtain the number of antenna ports for uplink data transmission, so that data transmission on different panels can use independent numbers of antenna ports, thereby improving the flexibility of uplink multi-panel scheduling.

[0031] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is a channel state information reference signal (CSI-RS) resource, and determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining corresponding downlink channel information based on the CSI-RS on the CSI-RS resource; determining the downlink channel information as uplink channel information; and determining a transmit beam and / or precoding matrix used for the first uplink data transmission based on the uplink channel information.

[0032] Therefore, the network device can configure different CSI-RS resources for data transmission on different panels, thereby obtaining uplink channel information, so that the obtained channel information is more accurate.

[0033] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining a beam for receiving or sending a reference signal in the at least one first reference signal resource as the beam used for the first uplink data transmission.

[0034] For example, the at least one first reference signal resource is an SRS resource, and the terminal device determines the beam used when sending the SRS on the SRS resource as the transmission beam for the first uplink data transmission.

[0035] For another example, the at least one first reference signal resource is a CSI-RS resource, and the terminal device determines the beam used when receiving the CSI-RS on the CSI-RS resource as the receiving beam for the first uplink data transmission.

[0036] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, the at least one first reference signal resource is K SRS resources, K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the beam that will receive or send the reference signal in the at least one first reference signal resource is determined as the beam used for the first uplink data transmission, including: determining K transmitting beams used to send the SRS resources in the K SRS resources; using the K transmitting beams as the transmitting beams of the K data transmission layers, and the K transmitting beams correspond one-to-one to the K data transmission layers.

[0037] Therefore, uplink transmissions corresponding to different reference signal resources may use different beams to match the channel information of the panel transmitting the corresponding data.

[0038] In combination with the first aspect and its above-mentioned implementation manner, in another implementation manner of the first aspect, determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the power control parameter corresponding to the at least one first reference signal resource as the transmission power used for the first uplink data transmission based on the correspondence between the reference signal resources and the power control parameters.

[0039] In combination with the first aspect and its above-mentioned implementation method, in another implementation method of the first aspect, the method also includes: according to the correspondence between the reference signal resource indication information and the power control parameter, determining the power control parameter corresponding to the first reference signal resource indication information as the transmission power used for the first uplink data transmission.

[0040] In combination with the first aspect and the above implementation manner, in another implementation manner of the first aspect, the power control parameter includes at least one of: an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

[0041] Therefore, uplink transmissions corresponding to different reference signal resources may use different transmit powers, so as to match the channel gain of the beam or panel transmitting the corresponding data.

[0042] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, determining the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource includes: determining the antenna array block that receives or sends the reference signal in the at least one first reference signal resource as the antenna array block used for the first uplink data transmission.

[0043] For example, the at least one first reference signal resource is an SRS resource, and the terminal device determines the panel used when sending the SRS on the SRS resource as the panel for transmitting the first uplink data.

[0044] For another example, the at least one first reference signal resource is a CSI-RS resource, and the terminal device determines the panel used when receiving the CSI-RS on the CSI-RS resource as the panel for transmitting the first uplink data.

[0045] Therefore, different panels may be used for uplink transmission corresponding to different reference signal resources, so that data can be transmitted on a better panel according to the reference signal, or multiple panels of the terminal can be fully utilized to transmit data simultaneously, thereby improving uplink transmission performance.

[0046] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the method further includes: receiving a second DCI sent by the network device while receiving the first DCI.

[0047] Therefore, the terminal can detect at least two DCIs at the same time and schedule data transmission on different panels respectively, thereby supporting uplink transmission on different panels at the same time and improving the spectrum efficiency of uplink transmission.

[0048] Receiving the second DCI while receiving the first DCI may include: the terminal device receives the first DCI and the second DCI in the same time slot, or the terminal device receives the first DCI and the second DCI in the same orthogonal frequency division multiplexing (OFDM) symbol, or the terminal device detects the first DCI and the second DCI in the same control channel.

[0049] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the second DCI includes second reference signal resource set indication information; the method also includes: determining a second reference signal resource set according to the second reference signal resource set indication information, and the second reference signal resource set is different from the first reference signal resource set.

[0050] In combination with the first aspect and the above-mentioned implementation manner, in another implementation manner of the first aspect, the first uplink data transmission scheduled by the first DCI and the second uplink data transmission scheduled by the second DCI use different demodulation reference signal (Demodulation Reference Signal, DMRS) ports.

[0051] Therefore, in the method for uplink data transmission in an embodiment of the present application, a terminal device receives multiple DCIs sent by a network device, different DCIs are used to schedule uplink transmissions on different panels, and the uplink channel information of the corresponding panel is determined according to different resource sets indicated in different DCIs. This allows multiple panels to use independent transmission parameters for data transmission, thereby improving the flexibility of multi-panel transmission and uplink spectrum efficiency.

[0052] In a second aspect, a terminal device is provided, which is used to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a unit for executing the method in the first aspect or any possible implementation of the first aspect.

[0053] In a third aspect, a terminal device is provided, comprising: a storage unit and a processor, the storage unit being used to store instructions, the processor being used to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the first aspect or any possible implementation of the first aspect.

[0054] According to a fourth aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program comprises instructions for executing the method in the first aspect or any possible implementation of the first aspect.

[0055] In a fifth aspect, a computer program product including instructions is provided, and when a computer runs the instructions of the computer program product, the computer executes the method for uplink data transmission in the first aspect or any possible implementation of the first aspect. Specifically, the computer program product can be run on the terminal device of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic flowchart of a method for uplink data transmission according to an embodiment of the present application.

[0057] Figure 2 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0058] Figure 3 is another schematic block diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0060] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system of mobile communication (GSMC) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5G) system or new radio (NR), etc.

[0061] The terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile communication network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0062] The network device in the embodiment of the present application can be a device for communicating with a terminal device. The network device can be a base station (base transceiver station, BTS) in a GSMC system or CDMA, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

[0063] Figure 1 FIG. 1 is a schematic flow chart of a method 100 for uplink data transmission according to an embodiment of the present application, and the method 100 may be executed by a terminal device. Figure 1 As shown, the method 100 includes: S110, receiving a first DCI sent by a network device for scheduling a first uplink data transmission, the first DCI including first reference signal resource set indication information and first reference signal resource indication information; S120, determining a first reference signal resource set according to the first reference signal resource set indication information, the first reference signal resource set including at least one reference signal resource; S130, determining at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; S140, determining a transmission parameter used for the first uplink data transmission according to the at least one first reference signal resource.

[0064] It should be understood that the reference signal resource set in the embodiment of the present application may include at least one reference signal resource, and each reference signal resource set is used for the same function, but different sets may have different functions. Different reference signal resources in the same reference signal resource set have at least one same parameter, for example, the same parameter may be at least one of the following parameters: power control parameter, transmission bandwidth parameter, number of antenna ports, number of orthogonal frequency division multiplexing (OFDM) symbols occupied in a time slot, number of signal repetitions in a time slot, functional configuration, transmission time slot, but the embodiment of the present application is not limited to this. The network side can configure the same parameters for each reference signal resource set, and there is no need to configure these parameters separately for each reference signal resource in the set, thereby saving signaling overhead.

[0065] It should be understood that the reference signal resource set in the embodiment of the present application may be an SRS resource set, and the SRS resource set includes at least one SRS resource, and the SRS resource is used to transmit the SRS; or, the reference signal resource set may also be a CSI-RS resource set, and the CSI-RS resource set may include at least one CSI-RS resource, and the CSI-RS resource is used to transmit the CSI-RS, but the embodiment of the present application is not limited to this.

[0066] In an embodiment of the present application, in S110, a terminal device receives a first DCI sent by a network device, and the first DCI can be used to schedule a first uplink data transmission. The first DCI may include first reference signal resource set indication information and first reference signal resource indication information, wherein the first reference signal resource set indication information and the first reference signal resource indication information may be independently encoded or jointly encoded, and the embodiment of the present application is not limited to this.

[0067] It should be understood that before the terminal device in S120 determines the first reference signal resource set according to the first reference signal resource set indication information, the method 100 may also include: the terminal device receives the first configuration information sent by the network device, and the first configuration information is used to indicate multiple reference signal resource sets. Correspondingly, the terminal device determines the first reference signal resource set according to the first reference signal resource set indication information, which may specifically include: determining the first reference signal resource set from the multiple reference signal resource sets according to the first reference signal resource set indication information.

[0068] It should be understood that the terminal device in the embodiment of the present application may have one or more antenna array blocks (panels) for uplink data transmission, and each panel has an independent radio frequency channel.

[0069] Correspondingly, the multiple reference signal resource sets can be used for reference signal transmission on multiple antenna array blocks, wherein different reference signal resource sets can be used for reference signal transmission on different panels.

[0070] Optionally, the network device may configure a corresponding number of the multiple reference signal resource sets according to the number of panels in the terminal device. Specifically, the terminal device may send panel number information to the network device, where the panel number information is used to indicate the number of panels of the terminal device, so that the network device receives the panel number information, and determines the number of the multiple reference signal resource sets equal to the number of panels according to the panel number information, and sends the first configuration information to the terminal device, where the first configuration information indicates the multiple reference signal resource sets.

[0071] Correspondingly, the terminal device matches the multiple reference signal resource sets with the multiple panels one-to-one, that is, the terminal device transmits the corresponding panel according to the first reference signal resource set indicated by the first reference signal resource set indication information in the first DCI.

[0072] In this way, the network device can obtain the uplink channel information of different panels and then schedule the data transmission on the panel.

[0073] In the embodiment of the present application, the multiple reference signal resource sets may also correspond to multiple PTRS ports one by one, that is, different reference signal resource sets correspond to different PTRS ports. Specifically, the terminal device may determine the first PTRS port corresponding to the first reference signal resource set based on the correspondence between the multiple reference signal resource sets and the multiple PTRS ports; and transmit the uplink PTRS through the first PTRS port on the physical resources used for the first uplink data transmission.

[0074] Optionally, multiple PTRS ports corresponding one-to-one to the multiple reference signal resource sets can be configured for the terminal device by the network device through downlink signaling.

[0075] In this way, the network device can configure different PTRS ports for different reference signal resource sets corresponding to different panels, thereby tracking the phase changes of the corresponding panels.

[0076] In an embodiment of the present application, different reference signal resource sets in the multiple reference signal resource sets correspond to different PUSCH power control parameters. Specifically, the terminal device can determine the first PUSCH power control parameter group corresponding to the first reference signal resource set according to the correspondence between the multiple reference signal resource sets and the PUSCH power control parameter group.

[0077] Furthermore, the terminal device may also determine, in the first PUSCH power control parameter group, a power control parameter used for the PUSCH transmission indicated by the first DCI according to the first reference signal resource indication information.

[0078] Therefore, the network device can configure different power control parameter groups for different panels, so that the signals transmitted on different panels can be independently power controlled.

[0079] In S130, the terminal device determines to indicate a first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information. Specifically, the first reference signal resource indication information may include an index of at least one first reference signal resource, or. The first reference signal resource indication information may also include a bitmap of the first reference signal resource set.

[0080] Optionally, if the first reference signal resource indication information indicates a first reference signal resource, the first reference signal resource indication information may include an index of the first reference signal resource. Specifically, the terminal device determines the index of each reference signal resource in the first reference signal resource set, and determines the corresponding first reference signal resource according to the index included in the first reference signal resource indication information.

[0081] Optionally, if the first reference signal resource indication information indicates multiple first reference signal resources, the first reference signal resource indication information may include a bitmap, and the bitmap corresponds one-to-one to the reference signal resources in the first reference signal resource set. Specifically, if the terminal device determines that the first reference signal resource set includes N reference signal resources, the length of the bitmap in the first reference signal resource indication information is equal to the number N of reference signal resources in the first reference signal resource set. Through the bitmap, M of the N reference signal resources can be indicated as at least one first reference signal resource indicated by the first reference signal resource indication information, N and M are positive integers, and M is less than or equal to N.

[0082] For example, when any bit number in the bitmap is "1", it indicates selection; when the bit number is "0", it indicates non-selection, that is, the reference signal resources corresponding to all bit numbers "1" can be obtained through the bitmap, that is, at least one first reference signal resource indicated by the bitmap.

[0083] In S140, the terminal device determines the transmission parameters used for the first uplink data transmission based on the at least one first reference signal resource, wherein the transmission parameters used for the first uplink data transmission include: a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter, and at least one of an antenna array block.

[0084] Optionally, as an embodiment, if the at least one first reference signal resource is at least one SRS resource, the terminal device may determine the precoding matrix used for the first uplink data transmission based on the correspondence between the number of antenna ports, PMI information, and the precoding matrix. Specifically, the terminal device determines the number of antenna ports and the first PMI information of the at least one SRS resource, and based on the correspondence between the number of antenna ports, PMI information, and the precoding matrix, uses the number of antenna ports of the at least one SRS resource and the precoding matrix corresponding to the first PMI information as the precoding matrix used for the first uplink data transmission.

[0085] Optionally, the first DCI sent by the network device and received by the terminal device may include the first PMI information.

[0086] Optionally, the corresponding relationship between the number of antenna ports, PMI information and precoding matrix may be pre-agreed.

[0087] Optionally, the number of antenna ports of the at least one SRS resource is equal to the number of antenna ports included in the panel that transmits the SRS.

[0088] Therefore, based on the method, a precoding matrix used for the first uplink data transmission scheduled by the first DCI is obtained, so that data transmission on different panels can use independent precoding matrices, thereby increasing the flexibility of uplink scheduling.

[0089] Optionally, as an embodiment, if the at least one first reference signal resource is at least one SRS resource, the terminal device may determine the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of transmission layers for the first uplink data transmission. For example, if the at least one SRS resource includes K SRS resources, the number of transmission layers for the first uplink data transmission is K.

[0090] Optionally, as an embodiment, if the at least one first reference signal resource is at least one SRS resource, the terminal device may determine the precoding matrix used for transmitting the SRS in the SRS resource as the precoding matrix used for the first uplink data transmission.

[0091] Specifically, if the at least one SRS resource includes K SRS resources, and K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the terminal device determines K precoding matrices used by the K SRS resources; the K precoding matrices are respectively determined as K precoding matrices of the data transmission layers, the K precoding matrices correspond one-to-one to the K data transmission layers, that is, one precoding matrix corresponds to one data transmission layer.

[0092] Therefore, uplink transmission corresponding to different SRS resources can use the same precoding matrix as that on the SRS resource, so as to match the channel information of the panel transmitting the corresponding data.

[0093] Optionally, as an embodiment, if the at least one first reference signal resource is at least one SRS resource, the terminal device determines the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0094] For example, if the at least one SRS resource is one SRS resource, the terminal device may use the number of antenna ports of the one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0095] For another example, if the at least one SRS resource is a plurality of SRS resources, wherein each SRS resource is a single-port SRS resource, the terminal device may determine the number of the plurality of SRS resources as the number of antenna ports used for the first uplink data transmission.

[0096] Optionally, for codebook-based transmission, the terminal device can also determine the corresponding codebook based on the number of antenna ports used for the first uplink data transmission; for non-codebook-based transmission, the terminal device can determine the number of transmission layers of the corresponding uplink data according to the number of antenna ports.

[0097] Therefore, the method is used to obtain the number of antenna ports for uplink data transmission, so that data transmission on different panels can use independent numbers of antenna ports, thereby improving the flexibility of uplink multi-panel scheduling.

[0098] Optionally, as an embodiment, if the at least one first reference signal resource is a CSI-RS resource, the terminal device may determine the corresponding downlink channel information based on the CSI-RS on the CSI-RS resource; determine the downlink channel information as uplink channel information; and determine the transmit beam and / or precoding matrix used for the first uplink data transmission based on the uplink channel information.

[0099] Specifically, the terminal device determines the corresponding downlink channel information based on the CSI-RS on the CSI-RS resource; based on channel reciprocity, the terminal device uses the downlink channel information as uplink channel information, and then based on the uplink channel information, it can determine the transmit beam and / or precoding matrix used for the first uplink data transmission.

[0100] Therefore, the network device can configure different CSI-RS resources for data transmission on different panels, thereby obtaining uplink channel information, so that the obtained channel information is more accurate.

[0101] Optionally, as an embodiment, the terminal device may determine the beam for receiving or sending the reference signal in the at least one first reference signal resource as the beam used for the first uplink data transmission.

[0102] For example, the at least one first reference signal resource is an SRS resource, and the terminal device determines the beam used when sending the SRS on the SRS resource as the transmission beam for the first uplink data transmission.

[0103] For another example, the at least one first reference signal resource is a CSI-RS resource, and the terminal device determines the beam used when receiving the CSI-RS on the CSI-RS resource as the receiving beam for the first uplink data transmission.

[0104] For another example, the at least one first reference signal resource is K SRS resources, and K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the terminal device determines K transmission beams to be used when sending SRS resources among the K SRS resources, and uses the K transmission beams as K transmission beams of the data transmission layer, and the K transmission beams correspond one-to-one to the K data transmission layers.

[0105] Therefore, uplink transmissions corresponding to different reference signal resources may use different beams to match the channel information of the panel transmitting the corresponding data.

[0106] Optionally, as an embodiment, the terminal device may determine the power control parameter corresponding to the at least one first reference signal resource as the transmission power used for the first uplink data transmission based on the correspondence between the reference signal resource and the power control parameter.

[0107] Alternatively, the terminal device may also determine the power control parameter corresponding to the first reference signal resource indication information as the transmission power used for the first uplink data transmission according to the correspondence between the reference signal resource indication information and the power control parameter.

[0108] It should be understood that the reference signal resource can be an SRS resource, and the correspondence between the SRS resource and the power control parameter, and / or the correspondence between the SRS resource indicator (SRS Resource Indicator) SRI and the power control parameter can be pre-configured by the network device for the terminal device, and the embodiments of the present application are not limited to this.

[0109] It should be understood that the above power control parameter may include: at least one of an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

[0110] Therefore, uplink transmissions corresponding to different reference signal resources may use different transmit powers, so as to match the channel gain of the beam or panel transmitting the corresponding data.

[0111] Optionally, as an embodiment, the terminal device may determine a panel for receiving or sending a reference signal in the at least one first reference signal resource as a panel used for the first uplink data transmission.

[0112] For example, the at least one first reference signal resource is an SRS resource, and the terminal device determines the panel used when sending the SRS on the SRS resource as the panel for transmitting the first uplink data.

[0113] For another example, the at least one first reference signal resource is a CSI-RS resource, and the terminal device determines the panel used when receiving the CSI-RS on the CSI-RS resource as the panel for transmitting the first uplink data.

[0114] Therefore, different panels may be used for uplink transmission corresponding to different reference signal resources, so that data can be transmitted on a better panel according to the reference signal, or multiple panels of the terminal can be fully utilized to transmit data simultaneously, thereby improving uplink transmission performance.

[0115] In the embodiment of the present application, the method 100 may further include: receiving the second DCI sent by the network device while receiving the first DCI, that is, the terminal device simultaneously receives at least two DCIs, and the at least two DCIs include the first DCI and the second DCI.

[0116] Therefore, the terminal can detect at least two DCIs at the same time and schedule data transmission on different panels respectively, thereby supporting uplink transmission on different panels at the same time and improving the spectrum efficiency of uplink transmission.

[0117] It should be understood that receiving the second DCI while receiving the first DCI may include: the terminal device receives the first DCI and the second DCI in the same time slot, or the terminal device receives the first DCI and the second DCI in the same OFDM symbol, or the terminal device detects the first DCI and the second DCI in the same control channel. The embodiments of the present application are not limited to this.

[0118] It should be understood that the second DCI includes second reference signal resource set indication information; correspondingly, the method 100 also includes: the terminal device determines a second reference signal resource set according to the second reference signal resource set indication information, and the second reference signal resource set is different from the first reference signal resource set.

[0119] In the embodiment of the present application, a DMRS port group may correspond to a panel, and a panel may correspond to multiple DMRS ports. After determining the transmission parameters of a panel, the terminal device may transmit the data on the corresponding DMRS port group on the antenna array block. Correspondingly, the first uplink data transmission scheduled by the terminal device through the first DCI and the second uplink data transmission scheduled by the second DCI may use different DMRS ports.

[0120] For example, the first DCI schedules a first uplink transmission, and the first uplink transmission uses DMRS port 0 and port 1; the second DCI schedules a second uplink transmission, and the second uplink transmission uses DMRS port 2 and port 3.

[0121] Therefore, in the method for uplink data transmission in an embodiment of the present application, a terminal device receives multiple DCIs sent by a network device, different DCIs are used to schedule uplink transmissions on different panels, and the uplink channel information of the corresponding panel is determined according to different resource sets indicated in different DCIs. This allows multiple panels to use independent transmission parameters for data transmission, thereby improving the flexibility of multi-panel transmission and uplink spectrum efficiency.

[0122] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0123] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0124] Combined with the above Figure 1 , describes in detail the method for uplink data transmission according to an embodiment of the present application, and will now be combined with Figures 2 to 3 , describing a terminal device according to an embodiment of the present application.

[0125] like Figure 2 As shown, the terminal device 200 according to an embodiment of the present application includes: a receiving unit 210 and a determining unit 220, and optionally, may also include a sending unit 230.

[0126] Specifically, the receiving unit 210 is used to: receive first downlink control information DCI sent by a network device for scheduling a first uplink data transmission, the first DCI including first reference signal resource set indication information and first reference signal resource indication information; the determining unit 220 is used to: determine a first reference signal resource set according to the first reference signal resource set indication information, the first reference signal resource set including at least one reference signal resource; the determining unit 220 is also used to: determine at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; the determining unit 220 is also used to: determine a transmission parameter used for the first uplink data transmission according to the at least one first reference signal resource.

[0127] Optionally, the receiving unit 210 is also used to: receive first configuration information sent by the network device, where the first configuration information is used to indicate multiple reference signal resource sets; the determination unit 220 is specifically used to: determine the first reference signal resource set among the multiple reference signal resource sets based on the first reference signal resource set indication information.

[0128] Optionally, the multiple reference signal resource sets are used for reference signal transmission on multiple antenna array blocks.

[0129] Optionally, the sending unit 230 is used to: before receiving the first configuration information sent by the network device through the receiving unit 210, send antenna array block number information to the network device, the antenna array block number information is used to indicate the number of antenna array blocks of the terminal device, and the antenna array block number information is used by the network device to determine the number of the multiple reference signal resource sets.

[0130] Optionally, the multiple reference signal resource sets correspond one-to-one to multiple phase tracking reference signal PTRS ports.

[0131] Optionally, the determination unit 220 is further used to: determine a first PTRS port corresponding to the first reference signal resource set based on a correspondence between the multiple reference signal resource sets and the multiple PTRS ports; and transmit an uplink PTRS through the first PTRS port on the physical resources used for the first uplink data transmission.

[0132] Optionally, the determining unit 220 is further configured to: determine a first PUSCH power control parameter group corresponding to the first reference signal resource set according to a correspondence between the multiple reference signal resource sets and multiple physical uplink shared channel PUSCH power control parameter groups.

[0133] Optionally, the determining unit 220 is further used to: determine, in the first PUSCH power control parameter group, according to the first reference signal resource indication information, a power control parameter used for PUSCH transmission indicated by the first DCI.

[0134] Optionally, the transmission parameters used for the first uplink data transmission include: a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter, and at least one of an antenna array block.

[0135] Optionally, the at least one first reference signal resource is an SRS resource, and the determination unit 220 is specifically used to: determine the number of antenna ports of the SRS resource and the first PMI information; based on the correspondence between the number of antenna ports, the PMI information and the precoding matrix, determine that the precoding matrix corresponding to the number of antenna ports of the SRS resource and the first PMI information is the precoding matrix used for the first uplink data transmission.

[0136] Optionally, the first DCI includes the first PMI information.

[0137] Optionally, the at least one first reference signal resource is an SRS resource, and the determination unit 220 is specifically used to: determine the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of transmission layers for the first uplink data transmission.

[0138] Optionally, the at least one first reference signal resource is an SRS resource, and the determining unit 220 is specifically used to determine a precoding matrix used for transmitting an SRS in the SRS resource as a precoding matrix used for the first uplink data transmission.

[0139] Optionally, the at least one first reference signal resource is K SRS resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the determination unit 220 is specifically used to: determine K precoding matrices used by the K SRS resources; determine the K precoding matrices as K precoding matrices of the data transmission layers, and the K precoding matrices correspond one-to-one to the K data transmission layers.

[0140] Optionally, the at least one first reference signal resource is at least one SRS resource, and the determination unit 220 is specifically used to: determine the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0141] Optionally, the at least one first reference signal resource is a CSI-RS resource, and the determination unit 220 is specifically used to: determine corresponding downlink channel information based on the CSI-RS on the CSI-RS resource; determine the downlink channel information as uplink channel information; and determine the transmit beam and / or precoding matrix used for the first uplink data transmission based on the uplink channel information.

[0142] Optionally, the determination unit 220 is specifically used to: determine a beam for receiving or sending a reference signal in the at least one first reference signal resource as a beam used for the first uplink data transmission.

[0143] Optionally, the at least one first reference signal resource is K SRS resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the determination unit 220 is specifically used to: determine the K transmission beams used to send the SRS resources among the K SRS resources; use the K transmission beams as K transmission beams of the data transmission layer, and the K transmission beams correspond one-to-one to the K data transmission layers.

[0144] Optionally, the determining unit 220 is specifically configured to: determine, according to a correspondence between reference signal resources and power control parameters, a power control parameter corresponding to the at least one first reference signal resource as a transmit power used for the first uplink data transmission.

[0145] Optionally, the determining unit 220 is specifically configured to: determine, according to a correspondence between the reference signal resource indication information and the power control parameter, the power control parameter corresponding to the first reference signal resource indication information as the transmit power used for the first uplink data transmission.

[0146] Optionally, the power control parameter includes at least one of an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

[0147] Optionally, the determination unit 220 is specifically used to: determine an antenna array block that receives or sends a reference signal in the at least one first reference signal resource as an antenna array block used for the first uplink data transmission.

[0148] Optionally, the at least one first reference signal resource is an SRS resource or a CSI-RS resource.

[0149] Optionally, the receiving unit 210 is further used to: receive a second DCI sent by the network device while receiving the first DCI.

[0150] Optionally, the second DCI includes second reference signal resource set indication information; the determination unit 220 is specifically used to: determine a second reference signal resource set according to the second reference signal resource set indication information, and the second reference signal resource set is different from the first reference signal resource set.

[0151] Optionally, the first uplink data transmission scheduled by the first DCI and the second uplink data transmission scheduled by the second DCI use different DMRS ports. It should be understood that the terminal device 200 according to the embodiment of the present application may correspond to the method 100 in the embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 200 are respectively implemented Figure 1 For the sake of brevity, the corresponding processes of the terminal devices of each method are not repeated here.

[0152] Therefore, the terminal device of the embodiment of the present application receives multiple DCIs sent by the network device, and different DCIs are used to schedule uplink transmissions on different panels. The uplink channel information of the corresponding panel is determined according to different resource sets indicated in different DCIs, so that multiple panels can use independent transmission parameters for data transmission, thereby improving the flexibility of multi-panel transmission and the uplink spectrum efficiency.

[0153] Figure 3 A schematic block diagram of a terminal device 300 according to an embodiment of the present application is shown. Figure 3 As shown, the terminal device 300 includes: a processor 310 and a transceiver 320 , the processor 310 and the transceiver 320 are connected. Optionally, the terminal device 300 also includes a memory 330 , and the memory 330 is connected to the processor 310 . Among them, the processor 310, the memory 330 and the transceiver 320 communicate with each other through an internal connection path to transmit and / or control data signals. The memory 330 can be used to store instructions, and the processor 310 is used to execute the instructions stored in the memory 330 to control the transceiver 320 to send information or signals. The transceiver 320 is used to: receive the first downlink control information DCI sent by the network device for scheduling the first uplink data transmission, and the first DCI includes the first reference signal resource set indication information and the first reference signal resource indication information; the processor 310 is used to: determine the first reference signal resource set according to the first reference signal resource set indication information, and the first reference signal resource set includes at least one reference signal resource; the processor 310 is used to: determine at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; the processor 310 is used to: determine the transmission parameters used for the first uplink data transmission according to the at least one first reference signal resource.

[0154] Optionally, as an embodiment, the transceiver 320 is used to: receive first configuration information sent by the network device, the first configuration information being used to indicate multiple reference signal resource sets; the processor 310 is used to: determine the first reference signal resource set among the multiple reference signal resource sets based on the first reference signal resource set indication information.

[0155] Optionally, as an embodiment, the multiple reference signal resource sets are used for reference signal transmission on multiple antenna array blocks.

[0156] Optionally, as an embodiment, the transceiver 320 is used to: before receiving the first configuration information sent by the network device, send antenna array block number information to the network device, the antenna array block number information is used to indicate the number of antenna array blocks of the terminal device, and the antenna array block number information is used by the network device to determine the number of the multiple reference signal resource sets.

[0157] Optionally, as an embodiment, the multiple reference signal resource sets correspond one-to-one to multiple phase tracking reference signal PTRS ports.

[0158] Optionally, as an embodiment, the processor 310 is used to: determine a first PTRS port corresponding to the first reference signal resource set based on a correspondence between the multiple reference signal resource sets and the multiple PTRS ports; and transmit an uplink PTRS through the first PTRS port on the physical resources used for the first uplink data transmission.

[0159] Optionally, as an embodiment, the processor 310 is used to: determine a first PUSCH power control parameter group corresponding to the first reference signal resource set according to a correspondence between the multiple reference signal resource sets and multiple physical uplink shared channel PUSCH power control parameter groups.

[0160] Optionally, as an embodiment, the processor 310 is used to: determine, in the first PUSCH power control parameter group, according to the first reference signal resource indication information, a power control parameter used for the PUSCH transmission indicated by the first DCI.

[0161] Optionally, as an embodiment, the transmission parameters used for the first uplink data transmission include: a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter, and at least one of an antenna array block.

[0162] Optionally, as an embodiment, the at least one first reference signal resource is a sounding reference signal SRS resource, and the processor 310 is used to: determine the number of antenna ports of the SRS resource and the first precoding matrix indication PMI information; based on the correspondence between the number of antenna ports, PMI information and the precoding matrix, determine that the precoding matrix corresponding to the number of antenna ports of the SRS resource and the first PMI information is the precoding matrix used for the first uplink data transmission.

[0163] Optionally, as an embodiment, the first DCI includes the first PMI information.

[0164] Optionally, as an embodiment, the at least one first reference signal resource is an SRS resource, and the processor 310 is used to: determine the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of transmission layers for the first uplink data transmission.

[0165] Optionally, as an embodiment, the at least one first reference signal resource is an SRS resource, and the processor 310 is used to: determine a precoding matrix used for transmitting an SRS in the SRS resource as a precoding matrix used for the first uplink data transmission.

[0166] Optionally, as an embodiment, the at least one first reference signal resource is K SRS resources, K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the processor 310 is used to: determine K precoding matrices used by the K SRS resources; determine the K precoding matrices as K precoding matrices of the data transmission layers, and the K precoding matrices correspond one-to-one to the K data transmission layers.

[0167] Optionally, as an embodiment, the at least one first reference signal resource is at least one SRS resource, and the processor 310 is used to: determine the total number of antenna ports of the at least one SRS resource and / or the number of the at least one SRS resource as the number of antenna ports used for the first uplink data transmission.

[0168] Optionally, as an embodiment, the at least one first reference signal resource is a CSI-RS resource, and the processor 310 is used to: determine corresponding downlink channel information based on the CSI-RS on the CSI-RS resource; determine the downlink channel information as uplink channel information; and determine the transmit beam and / or precoding matrix used for the first uplink data transmission based on the uplink channel information.

[0169] Optionally, as an embodiment, the processor 310 is used to: determine a beam for receiving or sending a reference signal in the at least one first reference signal resource as a beam used for the first uplink data transmission.

[0170] Optionally, as an embodiment, the at least one first reference signal resource is K SRS resources, K is equal to the number of data transmission layers corresponding to the first uplink data transmission; the processor 310 is used to: determine K transmission beams used to send the SRS resources among the K SRS resources; use the K transmission beams as K transmission beams of the data transmission layer, and the K transmission beams correspond one-to-one to the K data transmission layers.

[0171] Optionally, as an embodiment, the processor 310 is used to: determine the power control parameter corresponding to the at least one first reference signal resource as the transmission power used for the first uplink data transmission according to a correspondence between the reference signal resource and the power control parameter.

[0172] Optionally, as an embodiment, the processor 310 is used to: determine the power control parameter corresponding to the first reference signal resource indication information as the transmission power used for the first uplink data transmission according to the correspondence between the reference signal resource indication information and the power control parameter.

[0173] Optionally, as an embodiment, the power control parameter includes at least one of an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

[0174] Optionally, as an embodiment, the processor 310 is used to: determine the antenna array block that receives or sends the reference signal in the at least one first reference signal resource as the antenna array block used for the first uplink data transmission.

[0175] Optionally, as an embodiment, the at least one first reference signal resource is an SRS resource or a CSI-RS resource.

[0176] Optionally, as an embodiment, the transceiver 320 is used to: receive the second DCI sent by the network device while receiving the first DCI.

[0177] Optionally, as an embodiment, the second DCI includes second reference signal resource set indication information; the processor 310 is used to: determine a second reference signal resource set according to the second reference signal resource set indication information, and the second reference signal resource set is different from the first reference signal resource set.

[0178] Optionally, as an embodiment, the first uplink data transmission scheduled by the first DCI and the second uplink data transmission scheduled by the second DCI use different demodulation reference signal DMRS ports.

[0179] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device 200 in the embodiment of the present application, and may correspond to the corresponding subject in the method 100 according to the embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to achieve Figure 1 For the sake of brevity, the corresponding processes of the terminal device in each method are not repeated here.

[0180] Therefore, the terminal device of the embodiment of the present application receives multiple DCIs sent by the network device, and different DCIs are used to schedule uplink transmissions on different panels. The uplink channel information of the corresponding panel is determined according to different resource sets indicated in different DCIs, so that multiple panels can use independent transmission parameters for data transmission, thereby improving the flexibility of multi-panel transmission and the uplink spectrum efficiency.

[0181] It should be noted that the above method embodiments of the present application can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in a decoding processor. The software module may be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0182] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0183] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0184] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0185] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0186] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0187] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0188] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0189] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for uplink data transmission, characterized in that: include: Receiving first downlink control information sent by a network device for scheduling first uplink data transmission, wherein the first downlink control information includes first reference signal resource set indication information and first reference signal resource indication information; receiving first configuration information sent by the network device, where the first configuration information is used to indicate multiple reference signal resource sets; Determine, according to the first reference signal resource set indication information, a first reference signal resource set from the multiple reference signal resource sets, where the first reference signal resource set includes at least one reference signal resource; Determine, according to the first reference signal resource indication information, at least one first reference signal resource in the first reference signal resource set; determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission; The method further comprises: Determine, according to a correspondence between the multiple reference signal resource sets and the multiple physical uplink shared channel power control parameter sets, a first physical uplink shared channel power control parameter set corresponding to the first reference signal resource set; A power control parameter used for physical uplink shared channel transmission indicated by the first downlink control information is determined in the first physical uplink shared channel power control parameter group according to the first reference signal resource indication information.

2. The method according to claim 1, characterized in that The multiple reference signal resource sets are used for reference signal transmission on multiple antenna array blocks.

3. The method according to claim 1 or 2, characterized in that: Before receiving the first configuration information sent by the network device, the method further includes: Antenna array block number information is sent to the network device, where the antenna array block number information is used to indicate the number of antenna array blocks of the terminal device, and the antenna array block number information is used by the network device to determine the number of the multiple reference signal resource sets.

4. The method according to claim 1, characterized in that: The multiple reference signal resource sets correspond one-to-one to the multiple phase tracking reference signal ports.

5. The method according to claim 4, characterized in that The method further comprises: Determine, according to a correspondence between the multiple reference signal resource sets and the multiple phase tracking reference signal ports, a first phase tracking reference signal port corresponding to the first reference signal resource set; An uplink phase tracking reference signal is transmitted through the first phase tracking reference signal port on a physical resource used for the first uplink data transmission.

6. The method according to claim 1, characterized in that The transmission parameters used for the first uplink data transmission include: at least one of a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter, and an antenna array block.

7. The method according to claim 6, characterized in that The at least one first reference signal resource is a sounding reference signal resource, The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: Determining the number of antenna ports of the sounding reference signal resource and first precoding matrix indication information; According to the correspondence between the number of antenna ports, precoding matrix indication information and the precoding matrix, determine that the precoding matrix corresponding to the number of antenna ports of the sounding reference signal resource and the first precoding matrix indication information is the precoding matrix used for the first uplink data transmission.

8. The method according to claim 7, characterized in that The first downlink control information includes the first precoding matrix indication information.

9. The method according to claim 6, characterized in that The at least one first reference signal resource is at least one sounding reference signal resource, The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: The total number of antenna ports of the at least one sounding reference signal resource and / or the number of the at least one sounding reference signal resource is determined as the number of transmission layers for the first uplink data transmission.

10. The method according to claim 6, characterized in that The at least one first reference signal resource is a sounding reference signal resource, The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: A precoding matrix used for transmitting a sounding reference signal in the sounding reference signal resource is determined as a precoding matrix used for transmitting the first uplink data.

11. The method according to claim 10, characterized in that The at least one first reference signal resource is K sounding reference signal resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; The determining, as a precoding matrix used for transmitting a sounding reference signal in the sounding reference signal resource, a precoding matrix used for transmitting the first uplink data, comprises: Determining K precoding matrices used by the K sounding reference signal resources; The K precoding matrices are determined as precoding matrices of the K data transmission layers, and the K precoding matrices correspond to the K data transmission layers in a one-to-one manner.

12. The method according to claim 6, characterized in that The at least one first reference signal resource is at least one sounding reference signal resource, The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: The total number of antenna ports of the at least one sounding reference signal resource and / or the number of the at least one sounding reference signal resource is determined as the number of antenna ports used for the first uplink data transmission.

13. The method according to claim 6, characterized in that The at least one first reference signal resource is a channel state information reference signal resource, The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: Determining corresponding downlink channel information according to a channel state information reference signal on the channel state information reference signal resource; Determining the downlink channel information as uplink channel information; A transmit beam and / or a precoding matrix used for the first uplink data transmission is determined according to the uplink channel information.

14. The method according to claim 6, characterized in that The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: A beam for receiving or sending a reference signal in the at least one first reference signal resource is determined as a beam used for the first uplink data transmission.

15. The method according to claim 14, characterized in that The at least one first reference signal resource is K sounding reference signal resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; The determining, as a beam used for transmitting the first uplink data transmission, a beam for receiving or transmitting the reference signal in the at least one first reference signal resource, comprises: Determining K transmit beams used for sending the sounding reference signal resources among the K sounding reference signal resources; The K transmission beams are used as transmission beams of the K data transmission layers, and the K transmission beams correspond to the K data transmission layers one-to-one.

16. The method according to claim 6, characterized in that The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: According to the correspondence between the reference signal resources and the power control parameters, the power control parameter corresponding to the at least one first reference signal resource is determined as the transmit power used for the first uplink data transmission.

17. The method according to claim 6, characterized in that The method further comprises: According to the correspondence between the reference signal resource indication information and the power control parameter, the power control parameter corresponding to the first reference signal resource indication information is determined as the transmit power used for the first uplink data transmission.

18. The method according to claim 16 or 17, characterized in that The power control parameter includes at least one of an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

19. The method according to claim 6, characterized in that The determining, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission includes: An antenna array block for receiving or sending a reference signal in the at least one first reference signal resource is determined as an antenna array block used for the first uplink data transmission.

20. The method according to claim 14, 16, 17 or 19, characterized in that The at least one first reference signal resource is a sounding reference signal resource or a channel state information reference signal resource.

21. The method according to claim 1, characterized in that The method further comprises: While receiving the first downlink control information, second downlink control information sent by the network device is received.

22. The method according to claim 21, characterized in that The second downlink control information includes second reference signal resource set indication information; The method further comprises: A second reference signal resource set is determined according to the second reference signal resource set indication information, where the second reference signal resource set is different from the first reference signal resource set.

23. The method according to claim 21, characterized in that The first uplink data transmission scheduled by the first downlink control information and the second uplink data transmission scheduled by the second downlink control information use different demodulation reference signal ports.

24. A terminal device, characterized in that: include: A receiving unit, configured to receive first downlink control information sent by a network device for scheduling first uplink data transmission, wherein the first downlink control information includes first reference signal resource set indication information and first reference signal resource indication information; and receiving first configuration information sent by the network device, where the first configuration information is used to indicate a plurality of reference signal resource sets; a determining unit, configured to determine a first reference signal resource set from the multiple reference signal resource sets according to the first reference signal resource set indication information, wherein the first reference signal resource set includes at least one reference signal resource; The determining unit is further configured to: determine at least one first reference signal resource in the first reference signal resource set according to the first reference signal resource indication information; The determining unit is further configured to: determine, according to the at least one first reference signal resource, a transmission parameter used for the first uplink data transmission; The determining unit is further configured to: Determining a first physical uplink shared channel power control parameter group corresponding to the first reference signal resource set according to a correspondence between the multiple reference signal resource sets and the multiple physical uplink shared channel power control parameter groups; and A power control parameter used for physical uplink shared channel transmission indicated by the first downlink control information is determined in the first physical uplink shared channel power control parameter group according to the first reference signal resource indication information.

25. The terminal device according to claim 24, characterized in that: The multiple reference signal resource sets are used for reference signal transmission on multiple antenna array blocks.

26. The terminal device according to claim 24 or 25, characterized in that: The terminal device further includes: A sending unit is used to send antenna array block number information to the network device before receiving the first configuration information sent by the network device through the receiving unit, the antenna array block number information is used to indicate the number of antenna array blocks of the terminal device, and the antenna array block number information is used by the network device to determine the number of the multiple reference signal resource sets.

27. The terminal device according to claim 24, characterized in that: The multiple reference signal resource sets correspond one-to-one to the multiple phase tracking reference signal ports.

28. The terminal device according to claim 27, characterized in that: The determining unit is further configured to: Determine, according to a correspondence between the multiple reference signal resource sets and the multiple phase tracking reference signal ports, a first phase tracking reference signal port corresponding to the first reference signal resource set; An uplink phase tracking reference signal is transmitted through the first phase tracking reference signal port on a physical resource used for the first uplink data transmission.

29. The terminal device according to claim 24, characterized in that: The transmission parameters used for the first uplink data transmission include: at least one of a precoding matrix, a number of transmission layers, a number of antenna ports, a transmit beam, a power control parameter, and an antenna array block.

30. The terminal device according to claim 29, characterized in that: The at least one first reference signal resource is a sounding reference signal resource, The determining unit is specifically used for: Determining the number of antenna ports of the sounding reference signal resource and first precoding matrix indication information; According to the correspondence between the number of antenna ports, precoding matrix indication information and the precoding matrix, determine that the precoding matrix corresponding to the number of antenna ports of the sounding reference signal resource and the first precoding matrix indication information is the precoding matrix used for the first uplink data transmission.

31. The terminal device according to claim 30, characterized in that: The first downlink control information includes the first precoding matrix indication information.

32. The terminal device according to claim 29, characterized in that: The at least one first reference signal resource is at least one sounding reference signal resource, The determining unit is specifically used for: The total number of antenna ports of the at least one sounding reference signal resource and / or the number of the at least one sounding reference signal resource is determined as the number of transmission layers for the first uplink data transmission.

33. The terminal device according to claim 29, characterized in that: The at least one first reference signal resource is a sounding reference signal resource, The determining unit is specifically used for: A precoding matrix used for transmitting a sounding reference signal in the sounding reference signal resource is determined as a precoding matrix used for transmitting the first uplink data.

34. The terminal device according to claim 33, characterized in that: The at least one first reference signal resource is K sounding reference signal resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; The determining unit is specifically used for: Determining K precoding matrices used by the K sounding reference signal resources; The K precoding matrices are determined as precoding matrices of the K data transmission layers, and the K precoding matrices correspond to the K data transmission layers in a one-to-one manner.

35. The terminal device according to claim 29, characterized in that: The at least one first reference signal resource is at least one sounding reference signal resource, The determining unit is specifically used for: The total number of antenna ports of the at least one sounding reference signal resource and / or the number of the at least one sounding reference signal resource is determined as the number of antenna ports used for the first uplink data transmission.

36. The terminal device according to claim 29, characterized in that: The at least one first reference signal resource is a channel state information reference signal resource, The determining unit is specifically used for: Determining corresponding downlink channel information according to a channel state information reference signal on the channel state information reference signal resource; Determining the downlink channel information as uplink channel information; A transmit beam and / or a precoding matrix used for the first uplink data transmission is determined according to the uplink channel information.

37. The terminal device according to claim 29, characterized in that: The determining unit is specifically used for: A beam for receiving or sending a reference signal in the at least one first reference signal resource is determined as a beam used for the first uplink data transmission.

38. The terminal device according to claim 37, characterized in that: The at least one first reference signal resource is K sounding reference signal resources, where K is equal to the number of data transmission layers corresponding to the first uplink data transmission; The determining unit is specifically used for: Determining K transmit beams used for sending the sounding reference signal resources among the K sounding reference signal resources; The K transmission beams are used as transmission beams of the K data transmission layers, and the K transmission beams correspond to the K data transmission layers one-to-one.

39. The terminal device according to claim 29, characterized in that: The determining unit is specifically used for: According to the correspondence between the reference signal resources and the power control parameters, the power control parameter corresponding to the at least one first reference signal resource is determined as the transmit power used for the first uplink data transmission.

40. The terminal device according to claim 29, characterized in that: The determining unit is specifically used for: According to the correspondence between the reference signal resource indication information and the power control parameter, the power control parameter corresponding to the first reference signal resource indication information is determined as the transmit power used for the first uplink data transmission.

41. The terminal device according to claim 39 or 40, characterized in that: The power control parameter includes at least one of an open-loop power control parameter, a closed-loop power control parameter and a path loss estimation value.

42. The terminal device according to claim 29, characterized in that: The determining unit is specifically used for: An antenna array block for receiving or sending a reference signal in the at least one first reference signal resource is determined as an antenna array block used for the first uplink data transmission.

43. The terminal device according to claim 37, 39, 40 or 42, characterized in that: The at least one first reference signal resource is a sounding reference signal resource or a channel state information reference signal resource.

44. The terminal device according to claim 24, characterized in that: The receiving unit is also used for: While receiving the first downlink control information, second downlink control information sent by the network device is received.

45. The terminal device according to claim 44, characterized in that: The second downlink control information includes second reference signal resource set indication information; The determining unit is specifically used for: A second reference signal resource set is determined according to the second reference signal resource set indication information, where the second reference signal resource set is different from the first reference signal resource set.

46. ​​The terminal device according to claim 44, characterized in that: The first uplink data transmission scheduled by the first downlink control information and the second uplink data transmission scheduled by the second downlink control information use different demodulation reference signal ports.

47. A terminal device, characterized in that: include: a processor, a transceiver and a memory for storing a computer program capable of running on the processor, When the processor executes the computer program, it controls the transceiver to receive and send signals, so that the terminal device performs the steps of the method described in any one of claims 1 to 23.

48. A computer storage medium storing computer executable instructions, wherein the computer executable instructions, when executed, implement the steps of the method of any one of claims 1 to 23.

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