Uplink data transmission method, uplink data transmission device, and readable storage medium

Abstract

The present application discloses an uplink data transmission method, device, terminal, and medium. An uplink data transmission method in an embodiment of the present application includes: when a UE is configured to transmit uplink data using a first waveform, the UE receives target downlink control information DCI from a network side device, and the target DCI is used to schedule the target uplink data; and when indication information included in the target DCI satisfies a first predetermined condition, the UE transmits the target uplink data using a second waveform, where the indication information is used to indicate transmission parameters of the target uplink data.

Description

[Technical Field]

[0001] The present application relates to the field of communications technology, and more particularly to an uplink data transmission method, device, terminal and medium. [Background technology]

[0002] Currently, in a New Radio (NR) system, a user equipment (UE) receives Radio Resource Control (RRC) signaling from a network side device, and can transmit uplink data using a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform or a Discrete Fourier Transform-Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) waveform according to waveform configuration information included in the RRC signaling.

[0003] Generally, a UE may transmit one uplink data stream using a CP-OFDM waveform, i.e., single-stream transmission, or a UE may transmit multiple uplink data streams using a DFT-S-OFDM waveform, i.e., multi-stream transmission.

[0004] However, when a UE performs single-stream transmission using a CP-OFDM waveform, a situation may occur in which the Peak to Average Power Ratio (PAPR) of the reference signal symbol is relatively high, resulting in a relatively low power amplification efficiency of the UE. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide an uplink data transmission method, apparatus, terminal and medium that can solve the problem of relatively low power amplification efficiency of a UE. [Means for solving the problem]

[0006] According to a first aspect, there is provided an uplink data transmission method, the method including: when a UE is configured to transmit uplink data using a first waveform, the UE receives target downlink control information (DCI) from a network side device, the target DCI being used to schedule the target uplink data; and when indication information included in the target DCI satisfies a first predetermined condition, the UE transmits the target uplink data using a second waveform, wherein the indication information is used to indicate transmission parameters of the target uplink data.

[0007] According to a second aspect, there is provided an uplink data transmission apparatus, the uplink data transmission apparatus including: a receiving module; and a transmitting module. When the uplink data transmission apparatus is configured to transmit uplink data using a first waveform, the receiving module receives a target DCI from a network side device, the target DCI being used to configure scheduling of the target uplink data. When indication information included in the target DCI received by the receiving module satisfies a first preset condition, the transmitting module is used to transmit the target uplink data using a second waveform, the indication information being used to indicate transmission parameters of the target uplink data.

[0008] According to a third aspect, there is provided a terminal including a processor, a memory, and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing the steps of the method of the first aspect.

[0009] According to a fourth aspect, there is provided a terminal including a processor and a communication interface, wherein the communication interface, when the terminal is configured to transmit uplink data using a first waveform, receives target downlink control information (DCI) from a network side device, the target DCI is used to schedule the target uplink data, and, if indication information included in the target DCI satisfies a first predetermined condition, is used to transmit the target uplink data using a second waveform, wherein the indication information is used to indicate transmission parameters of the target uplink data.

[0010] According to a fifth aspect, there is provided a readable storage medium having a program or instructions stored thereon, the program or instructions realizing the steps of the method according to the first aspect or the steps of the method according to the third aspect when executed by a processor.

[0011] According to a sixth aspect, there is provided a chip, the chip including a processor and a communication interface, the communication interface coupled to the processor, the processor running a program or instructions and adapted to implement the method of the first aspect.

[0012] According to a seventh aspect, there is provided a computer program / program product stored on a non-volatile storage medium, the program / program product being executed by at least one processor to implement the steps of the method according to the first aspect. [Effects of the Invention]

[0013] In an embodiment of the present application, when a UE is configured to transmit uplink data using a first waveform, the UE receives a target DCI for scheduling target uplink data from a network side device, and if the indication information included in the target DCI, which is used to indicate transmission parameters of the target uplink data, satisfies a first preset condition, the UE may directly transmit the target uplink data using a second waveform. When a UE is configured to transmit uplink data using a first waveform, the UE determines whether the indication information included in the target DCI satisfies a first preset condition, and if it determines that the indication information satisfies the first preset condition, the UE may not transmit the target uplink data using the preconfigured first waveform, but may transmit the target uplink data using a second waveform, thereby reducing the PAPR of reference signal symbols and thus improving the power amplification efficiency of the UE. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a block diagram of a wireless communication system according to an embodiment of the present application; [Figure 2] 1 is a schematic diagram of an uplink data transmission method according to an embodiment of the present application; [Figure 3] 2 is a second schematic diagram of an uplink data transmission method according to an embodiment of the present application; [Figure 4] 3 is a third schematic diagram of an uplink data transmission method according to an embodiment of the present application. [Figure 5] 1 is a structural schematic diagram of an uplink data transmission device according to an embodiment of the present application; [Figure 6] 2 is a second structural schematic diagram of an uplink data transmission device according to an embodiment of the present application; [Figure 7] 1 is a structural schematic diagram of a communication device according to an embodiment of the present application; [Figure 8] 1 is a hardware structure schematic diagram of a terminal according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0015] The following clearly and completely describes the technical solutions in the embodiments of the present application, in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application fall within the scope of protection of the present application.

[0016] The terms used in the examples of this application will be explained below.

[0017] 1. Uplink data transmission waveform configuration

[0018] The waveform in which the UE transmits uplink data may be semi-statically configured by RRC signaling received from the network side equipment.

[0019] When the transformPrecoder in the RRC signaling is configured to be enabled, the UE transmits uplink data using DFT-S-OFDM, and the uplink transmission is limited to single-stream transmission.

[0020] When the transformPrecoder in the RRC signaling is configured to be disabled, the UE transmits uplink data using CP-OFDM, and the uplink transmission may be single-stream transmission or multi-stream transmission.

[0021] 2. Precoding and transmission stream number information domain

[0022] In the embodiment of the present application, the precoding and number of transmission streams information domain is simply abbreviated as the TPMI field.

[0023] In this TPMI field, one information domain may simultaneously indicate precoding information and data stream number information, where the precoding information is used to indicate a precoding matrix.

[0024] 3. Other terms

[0025] The terms "first," "second," etc. in the specification and claims of this application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It should be understood that terms used in this manner are interchangeable where appropriate, so that embodiments of this application may be performed in orders other than those illustrated or described herein, and that objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects; for example, a first object may be one or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the related objects.

[0026] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be applied to other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are always used interchangeably, and the described techniques may be used in the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the description below; these techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0027] 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be referred to as a terminal device or user equipment (UE), and may be a terminal side device such as a mobile phone, a tablet personal computer (PDA), a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), a wearable device (WD), a vehicle-mounted equipment (VUE), a pedestrian-mounted equipment (PUE), etc., and the wearable device includes a smart watch, a bracelet, an earphone, a pair of glasses, etc. It should be noted that the embodiments of the present application do not limit the specific type of the terminal 11. The network side equipment 12 may be a base station or a core network, where the base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BBS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or any other suitable term in the art, as long as similar technical effects are achieved. The base station is not limited to a specific technical term. For illustrative purposes, the embodiments of this application only take base stations in an NR system as examples, and do not limit the specific type of base station.

[0028] The following describes in detail the uplink data transmission method according to the embodiments of the present application through several embodiments and application scenarios in conjunction with the drawings.

[0029] 2 shows a flowchart of an uplink data transmission method according to an embodiment of the present application. As shown in FIG. 2, the uplink data transmission method according to an embodiment of the present application may include the following steps 101 and 102.

[0030] In step 101, if the uplink data transmission device is configured to transmit uplink data using a first waveform, the uplink data transmission device receives a target DCI from a network side device.

[0031] Optionally, in the embodiment of the present application, the first waveform may be any one of CP-OFDM and DFT-S-OFDM.

[0032] Optionally, in an embodiment of the present application, the uplink data transmission device may receive RRC signaling from a network side device, and the transformPrecoder in the RRC signaling may configure the uplink data transmission device to transmit uplink data using a first waveform.

[0033] In the embodiment of the present application, the target DCI is used to schedule the target uplink data.

[0034] In step 102, if the indication information included in the target DCI satisfies a first preset condition, the uplink data transmission device transmits the target uplink data using a second waveform.

[0035] In the embodiment of the present application, the indication information is used to indicate the transmission parameters of the target uplink data.

[0036] Optionally, in the embodiment of the present application, the indication information may be one indication information, or may include multiple sub-indications information.

[0037] Optionally, in an embodiment of the present application, the indication information includes at least one of a TPMI field, a sounding reference signal resource indication information (SRS Resource Indicator, SRI) domain, a frequency domain resource allocation indication information (FDRA) domain, a modulation and coding scheme (MCS) index value, and a channel state information (CSI) request domain.

[0038] Further optionally, in an embodiment of the present application, the indication information may further include at least one of a physical / virtual resource block (PRB / VRB) allocation indication information field, a time domain resource allocation (TDRA) indication information field, a demodulation reference signal (DMRS) indication information field, etc.

[0039] Optionally, in an embodiment of the present application, when the first waveform is CP-OFDM and the second waveform is DFT-S-OFDM, the indication information satisfying the first preset condition may be: The channel rank corresponding to the TPMI field is equal to or less than a first threshold; The channel rank "rank" corresponding to the SRI field is less than or equal to a second threshold; and The physical resource blocks PRB indicated by the FDRA field are consecutive PRBs; the MCS index value is less than a third threshold; and The indication information does not include a CSI request field; and The indication information includes at least one of: a CSI request field; and the CSI request field is not used to trigger the uplink data transmission device to report a CSI report.

[0040] In an embodiment of the present application, if the indication information satisfies a first predetermined condition, the uplink data transmission device is scheduled for single-stream transmission. When the uplink data transmission device performs single-stream transmission using CP-OFDM, it is considered that a situation will occur in which the PAPR of the reference signal symbol is relatively high. Therefore, the uplink data transmission device may perform single-stream transmission using a DFT-S-OFDM waveform to reduce the PAPR of the reference signal symbol (i.e., transmit target uplink data).

[0041] Optionally, in an embodiment of the present application, when the first waveform is DFT-S-OFDM and the second waveform is CP-OFDM, the indication information is: The rank corresponding to the TPMI field is greater than a first threshold; and The rank corresponding to the SRI field is greater than a second threshold; and The PRBs indicated by the FDRA field may be contiguous or non-contiguous PRBs; the MCS index value is greater than a third threshold; and and the indication information includes a CSI request field.

[0042] In an embodiment of the present application, if the indication information satisfies a first predetermined condition, the uplink data transmission device is scheduled for multi-stream transmission. When the uplink data transmission device performs multi-stream transmission using DFT-S-OFDM, it is considered that a situation will occur in which the PAPR of the reference signal symbol is relatively high. Therefore, the uplink data transmission device may perform multi-stream transmission using a CP-OFDM waveform to reduce the PAPR of the reference signal symbol (i.e., transmit target uplink data).

[0043] In an embodiment of the present application, when an uplink data transmission device is configured to transmit uplink data using CP-OFDM, if the uplink data transmission device is scheduled for single-stream transmission and meets a first preset condition, the uplink data transmission device may transmit target uplink data using DFT-S-OFDM.

[0044] When the uplink data transmission device is configured to transmit uplink data using CP-OFDM, if the uplink data transmission device is scheduled for single-stream transmission and does not satisfy the first preset condition, the uplink data transmission device still transmits the target uplink data using CP-OFDM.

[0045] When the uplink data transmission device is configured to transmit uplink data using DFT-S-OFDM, when the uplink data transmission device is scheduled for multi-stream transmission and meets a first preset condition, the uplink data transmission device may transmit target uplink data using CP-OFDM.

[0046] In an uplink data transmission method according to an embodiment of the present application, when the uplink data transmission device is configured to transmit uplink data using a first waveform, the uplink data transmission device receives a target DCI for scheduling target uplink data from a network side device, and if indication information included in the target DCI used to indicate transmission parameters of the target uplink data satisfies a first predetermined condition, the uplink data transmission device may directly transmit the target uplink data using a second waveform. When the uplink data transmission device is configured to transmit uplink data using a first waveform, the uplink data transmission device determines whether the indication information included in the target DCI satisfies a first predetermined condition, and if it determines that the indication information satisfies the first predetermined condition, the uplink data transmission device may transmit the target uplink data using a second waveform instead of using the preconfigured first waveform, thereby reducing the PAPR of reference signal symbols and thus improving the power amplification efficiency of the uplink data transmission device.

[0047] In an embodiment of the present application, when an uplink data transmission device transmits target uplink data using a second waveform, a situation may occur in which some sub-indication information in the target DCI is invalid for this second waveform; thus, the uplink data transmission device may transmit this target uplink data using the second waveform with sub-indication information other than these some sub-indication information, that is, may ignore these some sub-indication information.

[0048] Hereinafter, an example will be described in which the above-mentioned several pieces of sub-indication information are Q pieces of sub-indication information.

[0049] Optionally, in an embodiment of the present application, the indication information includes N sub-indication information, where N is a positive integer. Specifically, as shown in FIG. 3 in conjunction with FIG. 2, the above step 102 may be specifically realized by the following step 102a:

[0050] In step 102a, if Q sub-indication information among the N sub-indication information satisfies a second predetermined condition, the uplink data transmission device transmits target uplink data using a second waveform according to other sub-indication information.

[0051] In the embodiment of the present application, the other sub-indication information is sub-indication information other than the Q sub-indication information among the N sub-indication information, where Q is a positive integer.

[0052] As can be understood, the uplink data transmission device transmits the target uplink data using a second waveform according to other sub-indication information, i.e., the uplink data transmission device ignores the Q sub-indication information that meets the second predetermined condition in the N sub-indication information.

[0053] Further optionally, in an embodiment of the present application, the second preset condition may specifically be that the sub-indication information is invalid for the second waveform.

[0054] For example, if the N sub-indication information includes a Phase Tracking Reference Signal (PTRS)-DMRS association information domain, the PTRS-DMRS association is 2 bits, and if the PTRS-DMRS association is invalid for a second waveform (e.g., DFT-S-OFDM), the uplink data transmission device may ignore the PTRS-DMRS association.

[0055] In an embodiment of the present application, the uplink data transmission device may transmit the target uplink data using the second waveform according to the transmission parameters indicated by the other sub-indication information.

[0056] As can be seen from this, the uplink data transmission device does not transmit target uplink data using Q sub-indication information that are invalid for the second waveform among the N sub-indication information included in the target DCI, but may transmit target uplink data using the second waveform for other sub-indication information that is valid for the second waveform, thereby improving the reliability of the uplink data transmission by the uplink data transmission device.

[0057] In an embodiment of the present application, the uplink data transmission device may maintain the size of a certain sub-indication information among the plurality of sub-indication information, and may newly decode this certain sub-indication information.

[0058] In the following, an example will be described in which the certain sub-indication information is a DMRS indication information field.

[0059] Optionally, in an embodiment of the present application, the indication information includes a first demodulation reference signal (DMRS) indication information field, which is used to indicate a transmission port of a DMRS used for the target uplink data when configured to transmit the target uplink data using the first waveform. Specifically, as shown in FIG. 4 in conjunction with FIG. 2, before the above step 102 of "the uplink data transmission device transmits the target uplink data using the second waveform," the uplink data transmission method according to the embodiment of the present application may further include the following step 301, and the above step 102 may be specifically realized by the following step 102b:

[0060] In step 301, if the indication information included in the target DCI satisfies a first preset condition, the uplink data transmission device determines a target transmission port based on the first DMRS indication information field.

[0061] Further optionally, in an embodiment of the present application, the uplink data transmission device may determine a target transmission port according to a first DMRS indication information field and a first DMRS indication table (or a second DMRS indication table) based on a preconfigured first DMRS indication table of a first waveform and a preconfigured second DMRS indication table of a second waveform, where the first DMRS indication table includes at least one state, the second DMRS indication table includes at least one state, and the state quantity value of the first DMRS indication table is different from the state quantity value of the second DMRS indication table.

[0062] Illustratively, Table 1 shows a DMRS indication table corresponding to DFT-S-OFDM.

[0063] [Table 1]

[0064] As shown in Table 1, this DMRS indication table includes four states (ie, the state quantity value is 4), totaling two bit indications.

[0065] Table 2 shows a DMRS indication table corresponding to CP-OFDM.

[0066] [Table 2]

[0067] As shown in Table 2, this DMRS indication table includes six states (ie, the state quantity value is 6), totaling three bit indications.

[0068] Optionally, in one possible implementation of an embodiment of the present application, the first DMRS indication information field corresponds to X bits, where X is determined based on which of the first waveform and the second waveform has a larger state quantity value, and X is a positive integer.

[0069] Further optionally, in an embodiment of the present application, X is a bit of the waveform having the greater state quantity value among the first waveform and the second waveform.

[0070] For example, if the state quantity value of a first waveform is 6 and the first waveform occupies 3 bits, and the state quantity value of a second waveform is 4 and the second waveform occupies 2 bits, then X is the number of bits of the waveform with the larger state quantity value (i.e., the first waveform) between the first and second waveforms, i.e., 3 bits.

[0071] In an embodiment of the present application, if the state quantity value corresponding to the second waveform is smaller than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit, where the target bit is either Y bits before or Z bits after the X bits, and both Y and Z are positive integers.

[0072] Further alternatively, in the embodiments of the present application, Y and Z may be the same or different, ie, Y=Z or Y≠Z.

[0073] For example, if the second waveform is DFT-S-OFDM and the first waveform is CP-OFDM, and Table 1 and Table 2 are combined, and the state quantity value corresponding to DFT-S-OFDM is smaller than the state quantity value corresponding to CP-OFDM, the target transmission port is the DMRS port to which Y (e.g., 2) bits from the front are indicated, or the DMRS port to which Z (e.g., 2) bits from the rear are indicated.

[0074] In an embodiment of the present application, if the state quantity value corresponding to the second waveform is greater than the state quantity value corresponding to the first waveform, the DMRS information domain length and the target transmission port are transmission ports determined by the state corresponding to the second waveform.

[0075] For example, the second waveform is CP-OFDM and the first waveform is DFT-S-OFDM. Combining Table 1 and Table 2, the state quantity value corresponding to CP-OFDM is greater than the state quantity value corresponding to DFT-S-OFDM. The DMRS information domain length and the target transmission port are transmission ports determined by the states corresponding to CP-OFDM (i.e., the six states in Table 2).

[0076] As can be seen from this, the uplink data transmission device may newly decode the first DMRS indication information to determine the target transmission port based on the state quantity value corresponding to the second waveform and the state quantity value corresponding to the first waveform, thereby improving the reliability of the uplink data transmission by the uplink data transmission device.

[0077] Alternatively, in another possible implementation manner of the embodiment of the present application, the above step 301 may be specifically implemented by the following steps 301a and 301b.

[0078] In step 301a, if the indication information included in the target DCI satisfies a first predetermined condition, the uplink data transmission device determines the index value of the second DMRS indication information field according to the index value of the first DMRS indication information field based on M first mapping relationships.

[0079] In an embodiment of the present application, each of the M first mapping relationships is a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms, where M is a positive integer; Further alternatively, in the embodiment of the present application, the M first mapping relationships may be mapping relationships pre-stored in the uplink data transmission device.

[0080] In an embodiment of the present application, the second DMRS indication information field is used to indicate the transmission port of the DMRS used for the target uplink data when configured to transmit the target uplink data using the second waveform.

[0081] Further optionally, in an embodiment of the present application, the uplink data transmission device may determine one matching first index value from the M first index values ​​of the first waveform according to the index value of the first DMRS indication information field, and then determine one second index value to map from the M second index values ​​of the second waveform according to the one first index value, and determine this one second index value as the index value of the second DMRS indication information field.

[0082] For example, by combining Table 1 and Table 2, the uplink data transmission device determines, according to the M first mapping relationships, the index value of the second DMRS indication information field (e.g., vaule = 0 in Table 1) based on the index value of the first DMRS indication information field (e.g., vaule = 2 in Table 2), or determines the index value of the second DMRS indication information field (e.g., vaule = 1 in Table 1) based on the index value of the first DMRS indication information field (e.g., vaule = 3 in Table 2), or determines the index value of the second DMRS indication information field (e.g., vaule = 2 in Table 1) based on the index value of the first DMRS indication information field (e.g., vaule = 4 in Table 2), or determines the index value of the second DMRS indication information field (e.g., vaule = 3 in Table 1) based on the index value of the first DMRS indication information field (e.g., vaule = 5 in Table 2).

[0083] In step 301b, the uplink data transmission device determines the target transmission port according to the index value of the second DMRS indication information field.

[0084] Further optionally, in an embodiment of the present application, the uplink data transmission device may determine the target transmission port according to the index value of the second DMRS indication information field and the first DMRS indication table (or the second DMRS indication table).

[0085] As can be seen from this, the uplink data transmission device can re-determine a new index value based on the index value of the first DMRS indication information field based on the M first mapping relationships, and determine the target transmission port based on this new index value, thereby improving the reliability of the uplink data transmission device.

[0086] In step 102b, the uplink data transmission device transmits the DMRS using the second waveform via the target transmission port.

[0087] It should be noted that in the embodiments of the present application, the DMRS indication information field in the target DCI is used as an example to describe how the uplink data transmission device newly decodes the sub-indication information and transmits the DMRS using the second waveform; for other sub-indication information in the target DCI, the steps in the above embodiments can be adopted, and the second waveform can be used to transmit other transmission parameters indicated by the other sub-indication information, and uplink data can be transmitted to transmit the target uplink data.

[0088] As can be seen, the uplink data transmission device may newly decode the first DMRS indication information to determine the target transmission port, and the uplink data transmission device may transmit the DMRS using the second waveform through this target transmission port, thereby improving the reliability of the uplink data transmission by the uplink data transmission device.

[0089] It should be noted that the uplink data transmission method according to the embodiments of the present application may be executed by an uplink data transmission device, or may be executed by a control module for executing the uplink data transmission method in the uplink data transmission device. In the embodiments of the present application, the uplink data transmission device according to the embodiments of the present application will be described by taking the uplink data transmission method executed by the uplink data transmission device as an example.

[0090] 5 shows a possible structural schematic diagram of a transmission device according to an embodiment of the present application. As shown in FIG. 5, the uplink data transmission device 60 may include: a receiving module 61 and a transmitting module 62.

[0091] Here, when the uplink data transmission device 60 is configured to transmit uplink data using a first waveform, the receiving module 61 receives a target DCI from a network side device, and the target DCI is used to schedule the target uplink data. The transmitting module 62 is used to transmit the target uplink data using a second waveform when the indication information included in the target DCI received by the receiving module 61 satisfies a first preset condition. Here, the indication information is used to indicate transmission parameters of the target uplink data.

[0092] In one possible implementation, the indication information includes at least one of a TPMI field, an SRI field, an FDRA field, an MCS index value, and a CSI request field.

[0093] In one possible implementation, when the first waveform is CP-OFDM and the second waveform is DFT-S-OFDM, the indication information satisfies the first predetermined condition: The indication information includes at least one of: the rank corresponding to the TPMI field is equal to or less than a first threshold; the rank corresponding to the SRI field is equal to or less than a second threshold; the PRBs indicated by the FDRA field are consecutive PRBs; the MCS index value is smaller than a third threshold; the indication information does not include a CSI request field; and the indication information includes a CSI request field, and the CSI request field is not used to trigger the uplink data transmission device 60 to report a CSI report.

[0094] In one possible implementation, the indication information includes a first DMRS indication field, which is used to indicate a transmission port of the DMRS to be used for the target uplink data when the target uplink data is configured to be transmitted using the first waveform. As shown in FIG. 6 in conjunction with FIG. 5, an uplink data transmission device 60 according to an embodiment of the present application may include a processing module 63. Here, the processing module 63 is used to determine a target transmission port based on the first DMRS indication field. The transmission module 62 is specifically used to transmit the DMRS using the second waveform via the target transmission port determined by the processing module 63.

[0095] In one possible implementation, the first DMRS indication information field corresponds to X bits, where X is determined based on which of the first and second waveforms has a larger state quantity value, where X is a positive integer, and if the state quantity value corresponding to the second waveform is smaller than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit; if the state quantity value corresponding to the second waveform is larger than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port determined based on the state corresponding to the second waveform, where the target bit is either Y previous bits or Z subsequent bits of the X bits, where Y and Z are both positive integers.

[0096] In one possible implementation, the processing module 63 specifically determines an index value of a second DMRS indication field according to M first mapping relations, where M is a positive integer, and is used to determine a target transmission port according to the index value of the second DMRS indication field, where each first mapping relation is a mapping relation between index values ​​of different DMRS indication fields corresponding to different waveforms, and the second DMRS indication field is used to indicate a transmission port of a DMRS used for the target uplink data when the second waveform is used to transmit the target uplink data.

[0097] In one possible implementation, the indication information includes N sub-indications, where N is a positive integer. Specifically, when Q sub-indications among the N sub-indications satisfy a second predetermined condition, the transmission module 62 is used to transmit target uplink data using a second waveform according to other sub-indications, where the other sub-indications are sub-indications other than the Q sub-indications among the N sub-indications, where Q is a positive integer.

[0098] In an uplink data transmission device according to an embodiment of the present application, when the uplink data transmission device is configured to transmit uplink data using a first waveform, the uplink data transmission device determines whether the indication information included in the target DCI satisfies a first predetermined condition, and if it is determined that the indication information satisfies the first predetermined condition, the uplink data transmission device may transmit the target uplink data using a second waveform instead of using the preconfigured first waveform, thereby reducing the PAPR of the reference signal symbol and thus improving the power amplification efficiency of the uplink data transmission device.

[0099] The uplink data transmission device in the embodiments of the present application may be a device, a device or electronic equipment having an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic equipment may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminals 11 listed above. The non-mobile terminal may be, for example, a server, a network-attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, a self-service machine, etc., and the embodiments of the present application are not specifically limited thereto.

[0100] The uplink data transmission device according to the embodiment of the present application can realize each process realized by the method embodiment of Figures 1 to 4 and achieve similar technical effects, and in order to avoid repetition of description, it will not be further described here.

[0101] Optionally, as shown in Figure 7, an embodiment of the present application further provides a communication device 70, which includes a processor 71, a memory 72, and a program or instruction stored in the memory 72 and operable on the processor 71. For example, if the communication device 70 is a terminal, when the program or instruction is executed by the processor 71, it can realize each process of the embodiment of the uplink data transmission method and achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0102] An embodiment of the present application further provides a terminal including a processor and a communication interface, wherein the communication interface receives target downlink control information (DCI) from a network side device when the terminal is configured to transmit uplink data using a first waveform, the target DCI is used to schedule the target uplink data, and when indication information included in the target DCI satisfies a first preset condition, transmits the target uplink data using a second waveform, where the indication information is used to indicate transmission parameters of the target uplink data. This terminal embodiment corresponds to the above terminal-side method embodiment, and the implementation processes and embodiments of the above method embodiments may all be applied to this terminal embodiment, and similar technical effects can be achieved. Specifically, Figure 8 is a schematic diagram of the hardware structure of a terminal implementing the embodiment of the present application.

[0103] The terminal 100 includes at least some components such as, but not limited to, a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110.

[0104] As will be understood by those skilled in the art, the terminal 100 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 110 by a power management system, thereby enabling the power management system to realize functions such as charge / discharge management and power consumption management. The terminal structure shown in Figure 8 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different configuration of components, which will not be further described here.

[0105] It should be understood that in the embodiment of the present application, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes image data of still or video images captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. The other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever, which will not be further described herein.

[0106] In the embodiment of the present application, the radio frequency unit 101 receives downlink data from the network side device, then processes the data in the processor 110, and transmits uplink data to the network side device. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0107] The memory 109 may be used to store software programs or instructions and various data. The memory 109 may primarily include a program or instruction storage area and a data storage area, where the program or instruction storage area can store an operating system, an application program or instructions required for at least one function (e.g., audio playback function, image playback function, etc.), etc. The memory 109 may include high-speed random access memory and may further include nonvolatile memory, where the nonvolatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, the memory 109 may be at least one magnetic disk memory device, flash memory device, or other nonvolatile solid-state memory device.

[0108] Processor 110 may include one or more processing units, and optionally, processor 110 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communications, such as a baseband processor. As can be appreciated, the modem processor does not have to be integrated into processor 110.

[0109] Here, when the terminal is configured to transmit uplink data using a first waveform, the radio frequency unit 101 receives a target DCI from a network side device, and the target DCI is used to schedule the target uplink data; if the indication information included in the target DCI satisfies a first predetermined condition, the radio frequency unit 101 transmits the target uplink data using a second waveform.

[0110] Here, the indication information is used to indicate transmission parameters of the target uplink data.

[0111] In a terminal according to an embodiment of the present application, when the terminal is configured to transmit uplink data using a first waveform, the terminal determines whether the indication information included in the target DCI satisfies a first predetermined condition, and if it determines that the indication information satisfies the first predetermined condition, it may not transmit the target uplink data using the pre-configured first waveform, but may transmit the target uplink data using a second waveform, thereby reducing the PAPR of the reference signal symbol and thus improving the power amplification efficiency of the terminal.

[0112] Optionally, in an embodiment of the present application, the indication information includes a first demodulation reference signal (DMRS) indication information field, which is used to indicate a transmission port of a DMRS used for the target uplink data when configured to transmit the target uplink data using the first waveform.

[0113] The processor 110 is further used to determine a target transmission port based on the first DMRS indication information field.

[0114] The radio frequency unit 101 is specifically used by the target transmission port to transmit a DMRS using a second waveform.

[0115] As can be seen, the terminal may newly decode the first DMRS indication information to determine a target transmission port, and the terminal may transmit the DMRS using the second waveform through this target transmission port, thereby improving the reliability of the terminal's uplink data transmission.

[0116] Optionally, in an embodiment of the present application, the processor 110 specifically determines the index value of the second DMRS indication information field according to the index value of the first DMRS indication information field based on M first mapping relationships, where M is a positive integer, and is used to determine the target transmission port according to the index value of the second DMRS indication information field.

[0117] Here, each first mapping relationship is a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms, and the second DMRS indication information field is used to indicate the transmission port of the DMRS used for the target uplink data when configured to transmit the target uplink data using the second waveform.

[0118] As can be seen from this, the terminal may re-determine one new index value according to the index value of the first DMRS indication information field according to the M first mapping relationships, and determine the target transmission port according to this one new index value, thereby improving the reliability of the terminal's uplink data transmission.

[0119] Optionally, in the embodiment of the present application, the indication information includes N sub-indication information, where N is a positive integer.

[0120] Specifically, when Q sub-indication information among the N sub-indication information satisfies a second predetermined condition, the radio frequency unit 101 is used to transmit target uplink data using a second waveform according to other sub-indication information.

[0121] Here, the other sub-indication information is sub-indication information other than the Q sub-indication information among the N sub-indication information, where Q is a positive integer.

[0122] As can be seen, the terminal does not transmit target uplink data using Q sub-indication information that are invalid for the second waveform among the N sub-indication information included in the target DCI, but may transmit target uplink data using the second waveform for other sub-indication information that is valid for the second waveform, thereby improving the reliability of the terminal's transmission of uplink data.

[0123] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the above-mentioned uplink data transmission method embodiment can be realized and the same technical effect can be achieved. In order to avoid repetition, no further description will be given here.

[0124] The processor may be the processor in the terminal described in the above embodiment. The readable storage medium may include a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0125] The embodiments of the present application further provide a chip, the chip including a processor and a communication interface, the communication interface is coupled to the processor, the processor runs a program or instruction, and is used to realize each process of the above-mentioned uplink data transmission method embodiment, and can achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0126] It should be understood that the chips referred to in the embodiments of this application may be referred to as system level chips, system chips, chip systems, or system-on-chips.

[0127] It should be noted that, in this specification, the terms "comprise," "include," "includes," or any other variations thereof are intended to cover the non-exclusive "comprise," whereby a process, method, article, or apparatus comprising a set of elements not only includes those elements but also other elements not expressly listed or inherent in such process, method, article, or apparatus. Absent further limitations, an element defined by the phrase "comprises one of" does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising that element. It should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions in an essentially simultaneous manner or in the reverse order, depending on the functionality involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to some examples may be combined in other examples.

[0128] As will be apparent to those skilled in the art from the above description of the embodiments, the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical solution of the present application, in substance or in part contributing to the prior art, may be embodied in the form of a computer software product. This computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes some instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, network device, etc.) to execute the methods described in each embodiment of the present application.

[0129] Although the embodiments of the present application have been described above in conjunction with the drawings, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can implement many forms under the guidance of the present application as long as they do not deviate from the spirit and scope of protection of the claims, and all of them fall within the scope of protection of the present application.

[0130] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application filed with the State Intellectual Property Office on June 2, 2021, bearing application number 202110615438.0 and entitled "Uplink data transmission method, device, terminal and medium," the entire contents of which are incorporated herein by reference.

Claims

1. An uplink data transmission method, the uplink data transmission method comprising: When a user equipment (UE) is configured to transmit uplink data using a first waveform, the UE receives target downlink control information (DCI) from a network side equipment, and the target DCI is used to schedule the target uplink data; and If the indication information included in the target DCI satisfies a first preset condition, the UE transmits the target uplink data using a second waveform; the indication information is used to indicate a transmission parameter of the target uplink data; The indication information includes at least one of a precoding and transmission stream number information TPMI field, a sounding reference signal resource indication information SRI field, and a channel state information CSI request field; When the first waveform is cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and the second waveform is discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM), the indication information satisfies the first predetermined condition: The channel rank corresponding to the TPMI field is equal to or less than a first threshold; The channel rank corresponding to the SRI field is less than or equal to a second threshold; The indication information does not include the CSI request field; the indication information includes the CSI request field, and the CSI request field is not used to trigger the UE to report a CSI report. Uplink data transmission method.

2. The method of claim 1 , wherein the indication information further includes at least one of a frequency domain resource allocation indication (FDRA) field and a modulation and coding scheme (MCS) index value.

3. When the first waveform is cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and the second waveform is discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM), the indication information satisfies the first predetermined condition: The physical resource blocks (PRBs) indicated by the FDRA field are consecutive PRBs; The uplink data transmission method according to claim 2 , further comprising at least one of: the MCS index value being less than a third threshold.

4. the indication information further includes a first demodulation reference signal (DMRS) indication information field, which is used to indicate a transmission port of a DMRS used for the target uplink data when the target uplink data is configured to be transmitted using the first waveform; Before the UE transmits the target uplink data using a second waveform, the uplink data transmission method comprises: The method further includes determining a target transmission port based on the first DMRS indication information field, the UE transmitting the target uplink data using a second waveform; The uplink data transmission method according to claim 1 , further comprising the UE transmitting the DMRS using the second waveform via the target transmission port.

5. The first DMRS indication information field corresponds to X bits, where X is determined based on which of the first waveform and the second waveform has a larger state quantity value, and X is a positive integer; If the state quantity value corresponding to the second waveform is smaller than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit; If the state quantity value corresponding to the second waveform is greater than the state quantity value corresponding to the first waveform, the target transmission port is a transmission port determined based on the state corresponding to the second waveform; 5. The uplink data transmission method according to claim 4, wherein the target bits are Y bits before or Z bits after the X bits, and both Y and Z are positive integers.

6. The UE determining a target transmission port based on the first DMRS indication information field, The UE determines an index value of a second DMRS indication information field according to M first mapping relationships and according to an index value of the first DMRS indication information field, where M is a positive integer; The UE determines the target transmission port according to an index value of the second DMRS indication information field; Each first mapping relationship is a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms, 5. The uplink data transmission method of claim 4, wherein the second DMRS indication information field is used to indicate a transmission port of a DMRS to be used for the target uplink data when configured to transmit the target uplink data using the second waveform.

7. The instruction information further includes N sub-indication information, where N is a positive integer; transmitting the target uplink data by the UE using a second waveform; When Q sub-indication information among the N sub-indication information satisfy a second preset condition, the UE transmits the target uplink data using the second waveform according to other sub-indication information; The uplink data transmission method according to claim 1 , wherein the other sub-indication information is sub-indication information other than the Q sub-indication information among the N sub-indication information, where Q is a positive integer.

8. An uplink data transmission device, the uplink data transmission device including a receiving module and a transmitting module; the receiving module receives a target DCI from a network side device when the uplink data transmission device is configured to transmit uplink data using a first waveform, and the target DCI is used to schedule the target uplink data; The transmitting module is used to transmit the target uplink data using a second waveform when the indication information included in the target DCI received by the receiving module satisfies a first preset condition; the indication information is used to indicate a transmission parameter of the target uplink data; the indication information includes at least one of a TPMI field, an SRI field, and a CSI request field; When the first waveform is CP-OFDM and the second waveform is DFT-S-OFDM, the indication information satisfies the first predetermined condition: The channel rank corresponding to the TPMI field is equal to or less than a first threshold; The channel rank corresponding to the SRI field is less than or equal to a second threshold; The indication information does not include the CSI request field; the indication information includes the CSI request field, and the CSI request field is not used to trigger a user equipment (UE) to report a CSI report. Uplink data transmission device.

9. The uplink data transmission device according to claim 8 , wherein the indication information further includes at least one of an FDRA field and an MCS index value.

10. When the first waveform is CP-OFDM and the second waveform is DFT-S-OFDM, the indication information satisfies the first preset condition. The PRBs indicated by the FDRA field are consecutive PRBs; The uplink data transmission device according to claim 9 , further comprising at least one of: the MCS index value being smaller than a third threshold value.

11. the indication information further includes a first DMRS indication information field, which is used to indicate a transmission port of a DMRS to be used for the target uplink data when the target uplink data is configured to be transmitted using the first waveform; The uplink data transmission device further includes a processing module; The processing module is used to determine a target transmission port based on the first DMRS indication information field; The uplink data transmission device according to claim 8 , wherein the transmission module is specifically used to transmit the DMRS using the second waveform via the target transmission port determined by the processing module.

12. The first DMRS indication information field corresponds to X bits, where X is determined based on which of the first waveform and the second waveform has a larger state quantity value, and X is a positive integer; If the state quantity value corresponding to the second waveform is smaller than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit; If the state quantity value corresponding to the second waveform is greater than the state quantity value corresponding to the first waveform, the target transmission port is a transmission port determined based on the state corresponding to the second waveform; 12. The uplink data transmission device according to claim 11, wherein the target bits are Y bits before or Z bits after the X bits, and both Y and Z are positive integers.

13. The processing module specifically determines an index value of a second DMRS indication information field according to M first mapping relationships, where M is a positive integer, and the index value of the second DMRS indication information field is used to determine the target transmission port; Each first mapping relationship is a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms, 12. The uplink data transmission device of claim 11, wherein the second DMRS indication information field is used to indicate a transmission port of a DMRS to be used for the target uplink data when configured to transmit the target uplink data using the second waveform.

14. The instruction information further includes N sub-indication information, where N is a positive integer; Specifically, when Q sub-indication information among the N sub-indication information satisfies a second predetermined condition, the transmitting module is used to transmit the target uplink data using the second waveform according to other sub-indication information; The uplink data transmission device according to claim 8 , wherein the other sub-indication information is sub-indication information other than the Q sub-indication information among the N sub-indication information, where Q is a positive integer.

15. A readable storage medium having a program or instructions stored therein, the program or instructions realizing the uplink data transmission method according to any one of claims 1 to 7 when executed by a processor.

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