Data transmission method and terminal device

Abstract

The embodiment of the present application provides a method and terminal device for data transmission, which can improve the rate of uplink transmission. The method includes: receiving at least two DMRS port groups configured by a network device; determining the target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups; determining the transmission parameters used for transmitting data on the DMRS port group corresponding to the target reference signal resource according to the target reference signal resource; after determining the transmission parameters used for transmitting data on each DMRS port group, transmitting data on the at least two DMRS port groups.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a data transmission method and terminal device. Background Art

[0002] In the New Radio (NR) system, terminal devices can perform uplink transmission through antenna array panels, and each antenna array panel has an independent RF channel. At present, terminal devices can perform uplink transmission through a single antenna array panel. However, when uplink transmission is performed through a single antenna array panel, the transmission rate is slow and cannot meet the increasingly high transmission rate requirements. Summary of the invention

[0003] The embodiments of the present application provide a data transmission method and a terminal device, which can increase the uplink transmission rate.

[0004] In a first aspect, a method for data transmission is provided, comprising:

[0005] Receiving at least two demodulation reference signal DMRS port groups configured by the network device;

[0006] Determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups;

[0007] Determine, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource;

[0008] After determining the transmission parameters used for transmitting data on each DMRS port group, data transmission is performed on the at least two DMRS port groups.

[0009] Therefore, in the data transmission method of the embodiment of the present application, the network device configures at least two DMRS port groups for the terminal device, the terminal device determines the target reference signal resource corresponding to each DMRS port group, and determines the transmission parameters used to transmit data on the corresponding DMRS port group through the target reference signal resource. Thus, the data on the corresponding DMRS port group can be transmitted according to the transmission parameters used to transmit data on each DMRS port group, and further, uplink transmission can be achieved through multiple antenna array blocks, thereby improving the uplink transmission rate.

[0010] Optionally, in an implementation manner of the first aspect, the receiving network device configures at least two DMRS port groups, including:

[0011] receiving the at least two DMRS port groups configured by the network device through high-level signaling; or,

[0012] The at least two DMRS port groups among the multiple DMRS port groups indicated by the network device through downlink control information DCI are received, where the multiple DMRS port groups are DMRS port groups pre-configured by the network device through high-layer signaling.

[0013] Optionally, in an implementation manner of the first aspect, the receiving network device configures at least two DMRS port groups, including:

[0014] Receiving the number of the at least two DMRS port groups indicated by the network device through high-layer signaling or DCI;

[0015] According to the number of the at least two DMRS port groups and a first preset condition, the DMRS ports included in each of the at least two DMRS port groups are determined, wherein the first preset condition is the DMRS ports included in each DMRS port group under the current transmission layer number Rank agreed in advance between the network device and the terminal device.

[0016] Optionally, in an implementation manner of the first aspect, determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups includes:

[0017] Receiving resource indication information carried by the network device through the DCI for scheduling data transmission on the at least two DMRS port groups, where the resource indication information is used to indicate the target reference signal resource corresponding to each DMRS port group;

[0018] The target reference signal resource corresponding to each DMRS port group is determined according to the resource indication information.

[0019] Optionally, in an implementation manner of the first aspect, determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups includes:

[0020] A target reference signal resource configured by the network device for each of the at least two DMRS port groups through high-layer signaling is received.

[0021] Optionally, in an implementation manner of the first aspect, determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource includes:

[0022] Acquire precoding matrix indication information from the network device;

[0023] A precoding matrix used for transmitting data on a DMRS port group corresponding to the target reference signal resource is determined according to the number of antenna ports in the target reference signal resource and the precoding matrix indication information.

[0024] Optionally, in an implementation manner of the first aspect, determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource includes:

[0025] The beam used to send or receive the reference signal on the target reference signal resource is determined as the beam used to transmit data on the DMRS port group corresponding to the target reference signal resource.

[0026] Optionally, in an implementation manner of the first aspect, determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource includes:

[0027] According to the power control parameter corresponding to the target reference signal resource, the transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource is determined.

[0028] Optionally, in an implementation manner of the first aspect, determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource includes:

[0029] The transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined according to a first power control parameter, where the first power control parameter is a power control parameter used to calculate the transmit power used to transmit a reference signal on the target reference signal resource.

[0030] Optionally, in an implementation manner of the first aspect, determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource includes:

[0031] According to a second power control parameter, a transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined, where the second power control parameter is a power control parameter pre-configured by the network device and corresponds to the target reference signal resource or indication information of the target reference signal resource.

[0032] Optionally, in an 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.

[0033] Optionally, in an implementation manner of the first aspect, determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource includes:

[0034] The antenna array block used for sending or receiving the reference signal on the target reference signal resource is determined to be the antenna array block used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

[0035] Optionally, in an implementation manner of the first aspect, the target reference signal resource is a sounding reference signal SRS resource or a channel state information reference signal CSI-RS resource.

[0036] 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.

[0037] In a third aspect, a terminal device is provided, the terminal device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected via a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to execute the method in the first aspect or any possible implementation of the first aspect.

[0038] In a fourth aspect, a computer storage medium is provided for storing computer software instructions for executing the method in the first aspect or any possible implementation of the first aspect, which includes a program designed for executing the above aspect.

[0039] In a fifth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method in the above-mentioned first aspect or any optional implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

[0041] Figure 2 It is a schematic flowchart of a data transmission method according to an embodiment of the present application.

[0042] Figure 3 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0043] Figure 4 It is a schematic block diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0045] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) 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) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or future 5G system.

[0046] Figure 1 A wireless communication system 100 applied in an embodiment of the present application is shown. The wireless communication system 100 may include a network device 110. The network device 110 may be a device that communicates with a terminal device. The network device 110 may provide communication coverage for a specific geographical area, and may communicate with a terminal device (e.g., UE) located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (EvolutionalNode B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network side device in a future 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0047] The wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. The terminal device 120 may be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may 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 PLMN, etc.

[0048] Optionally, terminal devices 120 may perform device-to-device (D2D) communication with each other.

[0049] Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0050] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0051] In the wireless communication system 100, the terminal device may have one or more antenna array blocks for uplink data transmission, and each antenna array block has an independent radio frequency channel. A demodulation reference signal (DMRS) port group corresponds to an antenna array block. After determining the transmission parameters of an antenna array block, the terminal device can transmit the data on the corresponding DMRS port group on this antenna array block.

[0052] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0053] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. 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.

[0054] Figure 2 is a schematic flow chart of a method 200 for data transmission according to an embodiment of the present application. Figure 2 As shown, the method 200 includes:

[0055] 210. The terminal device receives at least two DMRS port groups configured by the network device.

[0056] It should be understood that a DMRS port group includes at least one DMRS port.

[0057] Optionally, the network device may send control information, such as uplink acknowledgment signaling (Up-Link Acknowledge, UL ACK) on the DMRS port.

[0058] Optionally, when receiving the DMRS port group configured by the network device, the terminal device may obtain corresponding control information therefrom.

[0059] Specifically, the terminal device may receive the at least two DMRS port groups configured by the network device in the following three ways.

[0060] Method 1: The terminal device receives the at least two DMRS port groups configured by the network device through high-level signaling.

[0061] For example, the network device may configure the at least two DMRS port groups through Radio Resource Control (RRC) signaling or Media Access Control (MAC) layer signaling.

[0062] Specifically, the network device can configure a DMRS port group separately for each transmission layer number (Rank). For example, the network device can configure two DMRS port groups for Rank=2 through high-level signaling, the first DMRS port group includes DMRS port {0}, and the second DMRS port group includes DMRS port {1}. For another example, the network device can configure two DMRS port groups for Rank=4 through high-level signaling, the first port group includes DMRS ports {0, 2}, and the second DMRS port group includes DMRS ports {1, 3}. The terminal can determine the current DMRS port group based on the Rank.

[0063] Method 2: The terminal device receives the at least two DMRS port groups among the multiple DMRS port groups indicated by the network device through downlink control information (Downlink Control Information, DCI), and the multiple DMRS port groups are DMRS port groups pre-configured by the network device through high-level signaling.

[0064] Optionally, the DCI information may be used to schedule data transmission on the at least two DMRS port groups.

[0065] Optionally, the indication information carried in the DCI information may indicate the at least two DMRS port groups among the multiple DMRS port groups, for example, rank indication (RI) information.

[0066] For example, the network device may pre-configure four DMRS port groups {0}, {1}, {0, 1}, {2, 3} through high-layer signaling, and indicate two DMRS port groups {0, 1}, {2, 3} currently in use through RI.

[0067] Optionally, the DMRS port group can be indicated based on a bitmap file. For example, if the terminal device supports up to two DMRS port groups and the total number of DMRS ports is N (N≥2), the DMRS ports included in each DMRS port group can be indicated by a bitmap, wherein the first DMRS port group includes the port identified as 0 in the bitmap sequence, and the second DMRS port group includes the port identified as 1 in the bitmap sequence. Assuming that the uplink transmission of the terminal supports up to 4 DMRS ports, 4 bits of information can be used to indicate the DMRS ports included in the two DMRS port groups. For example, 0000 indicates that only the first DMRS port group is currently used, and 0011 indicates that each of the two DMRS port groups includes two DMRS ports.

[0068] Mode three, the terminal device receives the number of the at least two DMRS port groups indicated by the network device through high-layer signaling or DCI;

[0069] According to the number of the at least two DMRS port groups and the first preset condition, the DMRS ports included in each of the at least two DMRS port groups are determined, wherein the first preset condition is the DMRS ports included in each DMRS port group under the current Rank pre-agreed by the network device and the terminal device.

[0070] Optionally, after knowing the number of the at least two DMRS port groups, the terminal device may determine the total number of DMRS ports according to the first preset condition.

[0071] For example, if the number of DMRS port groups is 1, the DMRS port group contains all current DMRS ports. If the number of DMRS port groups is 2, and the total number of current DMRS ports is L (L ≥ 2), the first DMRS port group contains the first L / 2 (rounded down) DMRS ports, and the second DMRS port group contains other DMRS ports. The network device notifies the current number of DMRS port groups through high-level signaling or DCI whether it is 1 or 2, and the terminal can know the current DMRS port grouping.

[0072] 220. The terminal device determines a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups.

[0073] Optionally, the target reference signal resource is a sounding reference signal (Sounding Reference Signal, SRS) resource or a channel state information reference signal (Channel State Information Reference Signal, CSI-RS) resource.

[0074] It should be understood that the target reference signal resource includes the number of antenna ports.

[0075] Specifically, the terminal device may determine the target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups in the following two ways.

[0076] Mode 1: The terminal device receives resource indication information carried by the network device through the DCI for scheduling data transmission on the at least two DMRS port groups, where the resource indication information is used to indicate the target reference signal resource corresponding to each DMRS port group;

[0077] The target reference signal resource corresponding to each DMRS port group is determined according to the resource indication information.

[0078] Optionally, the resource indication information may be SRS resource indication information (SRS Resource Indicator, SRI) or CSI-RS resource indication information (CSI-RS Resource Indicator, CRI).

[0079] For example, assuming that the terminal device supports up to two DMRS port groups, the DCI contains two SRI fields, corresponding to the two DMRS port groups. If the terminal is currently configured with only one DMRS port group, the SRI field corresponding to the other DMRS port group can be set to a default value (such as 0) or used to indicate other information. The same applies to CSI-RS resource indication information.

[0080] Method 2: The terminal device receives the target reference signal resource configured by the network device for each of the at least two DMRS port groups through high-level signaling.

[0081] Specifically, when the network device configures the at least two DMRS port groups through high-layer signaling, the target reference signal resources corresponding to the at least two DMRS port groups may be configured simultaneously.

[0082] For example, the network device can configure an SRI for each DMRS port group. If the network device pre-configures multiple DMRS port groups through high-level signaling, and then indicates the DMRS port group used for current data transmission through DCI, the terminal device can determine the target reference signal resource of the DMRS port group corresponding to the SRI based on the SRI corresponding to each DMRS port group for current data transmission.

[0083] 230. The terminal device determines, according to the target reference signal resource, a transmission parameter used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

[0084] Optionally, the transmission parameters may be beam, precoding matrix, transmit power, antenna array block, etc.

[0085] Optionally, the terminal device may determine the transmission parameters used to transmit data on the DMRS port group corresponding to the target reference signal resource in the following four ways.

[0086] Method 1: The terminal device obtains precoding matrix indication information from the network device; determines the precoding matrix used to transmit data on the DMRS port group corresponding to the target reference signal resource according to the number of antenna ports in the target reference signal resource and the precoding matrix indication information.

[0087] Optionally, the network device and the terminal device pre-agree on the correspondence between the precoding matrix, the number of antenna ports and the precoding matrix indication information.

[0088] Therefore, the target reference signal resources corresponding to different DMRS port groups may be different, and the number of antenna ports in different target reference signal resources may be different. Thus, different precoding matrices may be used to transmit data on different DMRS port groups, thereby matching the channel information of the panel transmitting the corresponding data.

[0089] Method 2: The terminal device determines the beam used to send or receive the reference signal on the target reference signal resource as the beam used to transmit data on the DMRS port group corresponding to the target reference signal resource.

[0090] For example, the terminal device uses the beam used to transmit SRS on the target reference signal resource as the transmission beam for transmitting data; or, the terminal device uses the beam used to receive CSI-RS on the target reference signal resource as the transmission beam for transmitting data.

[0091] Therefore, the target reference signal resources corresponding to different DMRS port groups may be different, and different target reference signal resources may use different beams to send or receive reference signals. Thus, different beams may be used to transmit data on different DMRS port groups, thereby matching the channel information of the panel transmitting the corresponding data.

[0092] Method three: The terminal device determines the transmission power used to transmit data on the DMRS port group corresponding to the target reference signal resource according to the power control parameter corresponding to the target reference signal resource.

[0093] Optionally, the determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource includes:

[0094] The transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined according to a first power control parameter, where the first power control parameter is a power control parameter used to calculate the transmit power used to transmit a reference signal on the target reference signal resource.

[0095] Optionally, at this time, the target reference signal resource may be an SRS resource.

[0096] Specifically, the transmit power used for transmitting the reference signal on the target reference signal resource may be determined as the transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

[0097] For example, the terminal device may determine the transmission power used to transmit the SRS on the target SRS resource based on the first power control parameter, and use the first power control parameter to determine the transmission power of the data on the DMRS port group corresponding to the target SRS resource. Different SRS resources may use different first power control parameters. Typically, the first power control parameter here may include an uplink path loss estimate, or may include a path loss estimate and an open-loop power control parameter.

[0098] Optionally, the determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource includes:

[0099] According to a second power control parameter, a transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined, where the second power control parameter is a power control parameter pre-configured by the network device and corresponds to the target reference signal resource or indication information of the target reference signal resource.

[0100] Specifically, the transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource may be directly determined according to the second power control parameter.

[0101] For example, the network device can configure a set of corresponding power control parameters for each SRS resource of the terminal device, and then determine a corresponding set of second power control parameters based on the current target SRS resource. The transmission power of the data on the DMRS port group corresponding to the target SRS resource is determined according to the second power control parameter. Different SRS resources may correspond to different second power control parameters. Typically, the second power control parameter here may include an uplink path loss estimate, or may include a path loss estimate and an open-loop power control parameter.

[0102] 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.

[0103] Therefore, the target reference signal resources corresponding to different DMRS port groups may be different, and the power control parameters corresponding to different target reference signal resources may be different. Thus, different transmission powers may be used to transmit data on different DMRS port groups, thereby matching the channel information of the beam or antenna array panel that transmits the corresponding data.

[0104] Method four: The terminal device determines the antenna array block used for sending or receiving the reference signal on the target reference signal resource as the antenna array block used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

[0105] Therefore, the target reference signal resources corresponding to different DMRS port groups may be different, and the antenna array blocks used to send or receive reference signals on different target reference signal resources are different. Therefore, different antenna array blocks can be used to transmit data on different DMRS port groups, thereby making full use of multiple antenna array blocks of the terminal device to transmit data and improve the uplink transmission performance of the terminal device.

[0106] In the above method, if the target reference signal resource is an SRS resource, the corresponding reference signal is an SRS; if the target reference signal resource is a CSI-RS resource, the corresponding reference signal is a CSI-RS.

[0107] Optionally, the terminal device may determine the transmission parameters used to transmit data on the DMRS port group corresponding to the target reference signal resource according to at least one of the above-mentioned methods 1, 2, 3 and 4 in step 230.

[0108] 240. After determining the transmission parameters used for transmitting data on each DMRS port group, the terminal device performs data transmission on the at least two DMRS port groups.

[0109] Therefore, in the data transmission method of the embodiment of the present application, the network device configures at least two DMRS port groups for the terminal device, the terminal device determines the target reference signal resource corresponding to each DMRS port group, and determines the transmission parameters used to transmit data on the corresponding DMRS port group through the target reference signal resource. Thus, the data on the corresponding DMRS port group can be transmitted according to the transmission parameters used to transmit data on each DMRS port group, and further, uplink transmission can be achieved through multiple antenna array blocks, thereby improving the uplink transmission rate.

[0110] Figure 3 3 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 3 As shown, the terminal device 300 includes:

[0111] The receiving unit 310 is configured to receive at least two demodulation reference signal DMRS port groups configured by the network device;

[0112] The processing unit 320 is configured to determine a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups;

[0113] The processing unit 320 is further configured to determine, according to the target reference signal resource, a transmission parameter used for transmitting data on the DMRS port group corresponding to the target reference signal resource;

[0114] The sending unit 330 is configured to perform data transmission on the at least two DMRS port groups after the processing unit determines the transmission parameters used for transmitting data on each DMRS port group.

[0115] Optionally, the receiving unit 310 is specifically configured to:

[0116] receiving the at least two DMRS port groups configured by the network device through high-level signaling; or,

[0117] The at least two DMRS port groups among the multiple DMRS port groups indicated by the network device through downlink control information DCI are received, where the multiple DMRS port groups are DMRS port groups pre-configured by the network device through high-layer signaling.

[0118] Optionally, the receiving unit 310 is specifically configured to:

[0119] Receiving the number of the at least two DMRS port groups indicated by the network device through high-layer signaling or DCI;

[0120] According to the number of the at least two DMRS port groups and a first preset condition, the DMRS ports included in each of the at least two DMRS port groups are determined, wherein the first preset condition is the DMRS ports included in each DMRS port group under the current transmission layer number Rank agreed in advance between the network device and the terminal device.

[0121] Optionally, the processing unit 320 is specifically configured to:

[0122] Receiving resource indication information carried by the network device through the DCI for scheduling data transmission on the at least two DMRS port groups, where the resource indication information is used to indicate the target reference signal resource corresponding to each DMRS port group;

[0123] The target reference signal resource corresponding to each DMRS port group is determined according to the resource indication information.

[0124] Optionally, the processing unit 320 is specifically configured to:

[0125] A target reference signal resource configured by the network device for each of the at least two DMRS port groups through high-layer signaling is received.

[0126] Optionally, the processing unit 320 is specifically configured to:

[0127] Acquire precoding matrix indication information from the network device;

[0128] A precoding matrix used for transmitting data on a DMRS port group corresponding to the target reference signal resource is determined according to the number of antenna ports in the target reference signal resource and the precoding matrix indication information.

[0129] Optionally, the processing unit 320 is specifically configured to:

[0130] The beam used to send or receive the reference signal on the target reference signal resource is determined as the beam used to transmit data on the DMRS port group corresponding to the target reference signal resource.

[0131] Optionally, the processing unit 320 is specifically configured to:

[0132] According to the power control parameter corresponding to the target reference signal resource, the transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource is determined.

[0133] Optionally, the processing unit 320 is specifically configured to:

[0134] The transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined according to a first power control parameter, where the first power control parameter is a power control parameter used to calculate the transmit power used to transmit a reference signal on the target reference signal resource.

[0135] Optionally, the processing unit 320 is specifically configured to:

[0136] According to a second power control parameter, a transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined, where the second power control parameter is a power control parameter pre-configured by the network device and corresponds to the target reference signal resource or indication information of the target reference signal resource.

[0137] 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.

[0138] Optionally, the processing unit 320 is specifically configured to:

[0139] The antenna array block used for sending or receiving the reference signal on the target reference signal resource is determined to be the antenna array block used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

[0140] Optionally, the target reference signal resource is a sounding reference signal SRS resource or a channel state information reference signal CSI-RS resource.

[0141] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method 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 implement Figure 2 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0142] like Figure 4 As shown, the embodiment of the present application further provides a terminal device 400, which can be Figure 3 The terminal device 300 in Figure 2 The content of the terminal device corresponding to the method 200 in the embodiment. The device 400 includes: an input interface 410, an output interface 420, a processor 430 and a memory 440, and the input interface 410, the output interface 420, the processor 430 and the memory 440 can be connected through an internal communication connection line. The memory 440 is used to store programs, instructions or codes. The processor 430 is used to execute the programs, instructions or codes in the memory 440 to control the input interface 410 to receive signals, control the output interface 420 to send signals, and complete the operations in the aforementioned method embodiment.

[0143] It should be understood that in the embodiment of the present application, the processor 430 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0144] The memory 440 may include a read-only memory and a random access memory, and provides instructions and data to the processor 430. A portion of the memory 440 may also include a non-volatile random access memory. For example, the memory 440 may also store information on the device type.

[0145] In the implementation process, the contents of the above method can be completed by the hardware integrated logic circuit in the processor 430 or the instructions in the form of software. The contents of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can 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 the memory 440, and the processor 430 reads the information in the memory 440 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

[0146] In a specific implementation, Figure 3 The receiving unit 310 can be used Figure 4 The input interface 410 is implemented as follows, Figure 3 The sending unit 330 in Figure 4 The output interface 420 is implemented, Figure 3 The processing unit 320 in Figure 4 The processor 430 is implemented.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which 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 each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0153] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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 data transmission, It is characterized in that include: Receiving at least two demodulation reference signal DMRS port groups configured by the network device; Determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups; Determining, according to the target reference signal resource, a transmission parameter used for transmitting data on the DMRS port group corresponding to the target reference signal resource; After determining the transmission parameters used for transmitting data on each DMRS port group, performing data transmission on the at least two DMRS port groups; The determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource comprises: The beam used to send or receive the reference signal on the target reference signal resource is determined as the beam used to transmit data on the DMRS port group corresponding to the target reference signal resource.

2. The method according to claim 1, It is characterized in that The receiving network device configured at least two DMRS port groups, including: receiving the at least two DMRS port groups configured by the network device through high-level signaling; or, The at least two DMRS port groups among the multiple DMRS port groups indicated by the network device through downlink control information DCI are received, where the multiple DMRS port groups are DMRS port groups pre-configured by the network device through high-layer signaling.

3. The method according to claim 1, It is characterized in that The receiving network device configured at least two DMRS port groups, including: Receiving the number of the at least two DMRS port groups indicated by the network device through high-layer signaling or DCI; According to the number of the at least two DMRS port groups and the first preset condition, the DMRS ports included in each of the at least two DMRS port groups are determined, wherein the first preset condition is the DMRS ports included in each DMRS port group under the current transmission layer number Rank pre-agreed by the network device and the terminal device.

4. The method according to claim 1, It is characterized in that The determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups includes: Receiving resource indication information carried by the network device through the DCI for scheduling data transmission on the at least two DMRS port groups, the resource indication information is used to indicate the target reference signal resource corresponding to each DMRS port group; The target reference signal resource corresponding to each DMRS port group is determined according to the resource indication information.

5. The method according to claim 1, It is characterized in that The determining a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups includes: The target reference signal resource configured by the network device for each of the at least two DMRS port groups through high-layer signaling is received.

6. The method according to claim 1, It is characterized in that The determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource comprises: Acquire precoding matrix indication information from the network device; A precoding matrix used for transmitting data on a DMRS port group corresponding to the target reference signal resource is determined according to the number of antenna ports in the target reference signal resource and the precoding matrix indication information.

7. The method according to claim 1, It is characterized in that The determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource comprises: According to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource is determined.

8. The method according to claim 7, It is characterized in that The determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource, comprises: The transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined according to a first power control parameter, where the first power control parameter is a power control parameter used to calculate the transmit power used to transmit a reference signal on the target reference signal resource.

9. The method according to claim 7, It is characterized in that The determining, according to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource, comprises: According to a second power control parameter, the transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined, where the second power control parameter is a power control parameter pre-configured by the network device and corresponds to the target reference signal resource or the indication information of the target reference signal resource.

10. The method according to claim 7, It is 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.

11. The method according to any one of claims 1 to 10, It is characterized in that The determining, according to the target reference signal resource, a transmission parameter used for transmitting data on a DMRS port group corresponding to the target reference signal resource comprises: The antenna array block used for sending or receiving a reference signal on the target reference signal resource is determined as the antenna array block used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

12. The method according to any one of claims 1 to 10, It is characterized in that The target reference signal resource is a sounding reference signal SRS resource or a channel state information reference signal CSI-RS resource.

13. A terminal device, It is characterized in that include: A receiving unit, configured to receive at least two demodulation reference signal DMRS port groups configured by the network device; A processing unit, configured to determine a target reference signal resource corresponding to each DMRS port group in the at least two DMRS port groups; The processing unit is further used to determine, according to the target reference signal resource, a transmission parameter used for transmitting data on the DMRS port group corresponding to the target reference signal resource; a sending unit, configured to perform data transmission on the at least two DMRS port groups after the processing unit determines the transmission parameters used for transmitting data on each DMRS port group; The processing unit is also used for: The beam used to send or receive the reference signal on the target reference signal resource is determined as the beam used to transmit data on the DMRS port group corresponding to the target reference signal resource.

14. The terminal device according to claim 13, It is characterized in that The receiving unit is specifically used for: receiving the at least two DMRS port groups configured by the network device through high-level signaling; or, The at least two DMRS port groups among the multiple DMRS port groups indicated by the network device through downlink control information DCI are received, where the multiple DMRS port groups are DMRS port groups pre-configured by the network device through high-layer signaling.

15. The terminal device according to claim 13, It is characterized in that The receiving unit is specifically used for: Receiving the number of the at least two DMRS port groups indicated by the network device through high-layer signaling or DCI; According to the number of the at least two DMRS port groups and the first preset condition, the DMRS ports included in each of the at least two DMRS port groups are determined, wherein the first preset condition is the DMRS ports included in each DMRS port group under the current transmission layer number Rank pre-agreed by the network device and the terminal device.

16. The terminal device according to claim 13, It is characterized in that The processing unit is specifically used for: Receiving resource indication information carried by the network device through the DCI for scheduling data transmission on the at least two DMRS port groups, the resource indication information is used to indicate the target reference signal resource corresponding to each DMRS port group; The target reference signal resource corresponding to each DMRS port group is determined according to the resource indication information.

17. The terminal device according to claim 13, It is characterized in that The processing unit is specifically used for: The target reference signal resource configured by the network device for each of the at least two DMRS port groups through high-layer signaling is received.

18. The terminal device according to claim 13, It is characterized in that The processing unit is specifically used for: Acquire precoding matrix indication information from the network device; A precoding matrix used for transmitting data on a DMRS port group corresponding to the target reference signal resource is determined according to the number of antenna ports in the target reference signal resource and the precoding matrix indication information.

19. The terminal device according to claim 13, It is characterized in that The processing unit is specifically used for: According to the power control parameter corresponding to the target reference signal resource, a transmit power used for transmitting data on the DMRS port group corresponding to the target reference signal resource is determined.

20. The terminal device according to claim 19, It is characterized in that The processing unit is specifically used for: The transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined according to a first power control parameter, where the first power control parameter is a power control parameter used to calculate the transmit power used to transmit a reference signal on the target reference signal resource.

21. The terminal device according to claim 19, It is characterized in that The processing unit is specifically used for: According to a second power control parameter, the transmit power used to transmit data on the DMRS port group corresponding to the target reference signal resource is determined, where the second power control parameter is a power control parameter pre-configured by the network device and corresponds to the target reference signal resource or the indication information of the target reference signal resource.

22. The terminal device according to claim 19, It is 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.

23. The terminal device according to any one of claims 13 to 22, It is characterized in that The processing unit is specifically used for: The antenna array block used for sending or receiving a reference signal on the target reference signal resource is determined as the antenna array block used for transmitting data on the DMRS port group corresponding to the target reference signal resource.

24. The terminal device according to any one of claims 13 to 22, It is characterized in that The target reference signal resource is a sounding reference signal SRS resource or a channel state information reference signal CSI-RS resource.

Images