Uplink data transmission method, device, terminal and medium

Abstract

The present application discloses an uplink data transmission method, apparatus, terminal and medium, which belongs to the field of communication technology. The uplink data transmission method of an embodiment of the present application includes: when a UE is configured to adopt a first waveform to transmit uplink data, the UE receives target downlink control information DCI from a network side device, and the target DCI is used to schedule target uplink data; when the indication information included in the target DCI meets a first preset condition, the UE adopts a second waveform to transmit the target uplink data; wherein the above-mentioned indication information is used to indicate: transmission parameters of the target uplink data.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an uplink data transmission method, device, terminal and medium. Background Art

[0002] Currently, in the New Radio (NR) system, the user equipment UE can receive radio resource control (RRC) signaling from the network side device and, based on the waveform configuration information included in the RRC signaling, use a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform or a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform to transmit uplink data.

[0003] Taking the UE using the CP-OFDM waveform to transmit uplink data as an example, the UE can use the CP-OFDM waveform to transmit one uplink data, that is, single-stream transmission; or the UE can use the DFT-S-OFDM waveform to transmit multiple uplink data, that is, multi-stream transmission.

[0004] However, when the UE adopts the CP-OFDM waveform for single-stream transmission, a high peak-to-average power ratio (PAPR) of the reference signal symbols may occur, resulting in low power amplifier efficiency of the UE. Summary of the Invention

[0005] The embodiments of the present application provide an uplink data transmission method, apparatus, terminal, and medium, which can solve the problem of low power amplifier efficiency of UE.

[0006] In a first aspect, an uplink data transmission method, apparatus, terminal, and medium method are provided, the method comprising: 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, where the target DCI is used to schedule target uplink data; when the indication information included in the target DCI satisfies a first preset condition, the UE transmits the target uplink data using a second waveform; wherein the above-mentioned indication information is used to indicate: transmission parameters of the target uplink data.

[0007] In a second aspect, an uplink data transmission device is provided, comprising: a receiving module and a transmission module. The receiving module is configured to receive a target DCI from a network-side device when the uplink data transmission device is configured to transmit uplink data using a first waveform, the target DCI being used to schedule target uplink data. The transmission module is configured to transmit the target uplink data using a second waveform when indication information included in the target DCI received by the receiving module satisfies a first preset condition; the indication information is used to indicate transmission parameters of the target uplink data.

[0008] In a third aspect, a terminal is provided, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0009] In a fourth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive target downlink control information DCI from a network side device when the terminal is configured to use a first waveform to transmit uplink data, and the target DCI is used to schedule target uplink data; when the indication information included in the target DCI meets a first preset condition, the target uplink data is transmitted using a second waveform; wherein the above-mentioned indication information is used to indicate: the transmission parameters of the target uplink data.

[0010] In a fifth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0011] In a sixth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the method described in the first aspect.

[0012] In a seventh aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect.

[0013] In an embodiment of the present application, when configured to transmit uplink data using a first waveform, the UE can receive a target DCI for scheduling target uplink data from a network-side device, and when the indication information included in the target DCI for indicating the transmission parameters of the target uplink data meets a first preset condition, directly adopt the second waveform to transmit the target uplink data. Since, when the UE is configured to transmit uplink data using a first waveform, the UE can determine whether the indication information included in the target DCI meets the first preset condition, and when it is determined that the indication information meets the first preset condition, adopt the second waveform to transmit the target uplink data, instead of adopting the pre-configured first waveform to transmit the target uplink data, the PAPR of the reference signal symbols can be reduced, thereby improving the power amplifier efficiency of the UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a block diagram of a wireless communication system provided by an embodiment of the present application;

[0015] Figure 2 This is one of the schematic diagrams of the uplink data transmission method provided in an embodiment of the present application;

[0016] Figure 3 This is a second schematic diagram of the uplink data transmission method provided in an embodiment of the present application;

[0017] Figure 4 This is a third schematic diagram of the uplink data transmission method provided in an embodiment of the present application;

[0018] Figure 5 This is one of the structural diagrams of the uplink data transmission device provided in the embodiment of the present application;

[0019] Figure 6 This is the second structural diagram of the uplink data transmission device provided in an embodiment of the present application;

[0020] Figure 7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0021] Figure 8 This is a schematic diagram of the hardware structure of the terminal provided in the embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0023] The following describes the terms involved in the embodiments of the present application.

[0024] 1. Configuration of uplink data transmission waveform

[0025] The waveform of uplink data transmitted by the UE can be semi-statically configured by RRC signaling received from the network-side device.

[0026] When the transformPrecoder in the RRC signaling is configured to be enabled, the UE adopts DFT-S-OFDM to transmit uplink data, and the uplink transmission is limited to single-stream transmission.

[0027] When the transformPrecoder in the RRC signaling is configured to be disabled, the UE uses CP-OFDM to transmit uplink data. The uplink transmission can be single-stream transmission or multi-stream transmission.

[0028] 2. Precoding and transport stream number information field

[0029] In the embodiment of the present application, the precoding and transport stream number information field is referred to as the TPMI field.

[0030] In the TPMI field, one information field can simultaneously indicate precoding information and data stream number information, wherein the precoding information is used to indicate the precoding matrix.

[0031] 3. Other terms

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in 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 often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0034] Figure 1The following is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (UE). The terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal-side devices. Wearable devices include: smart watches, bracelets, headphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, where the base station can be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (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 and receiving point (Transmitting Receiving Point, TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0035] The following describes in detail the uplink data transmission method provided by the embodiment of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

[0036] Figure 2 FIG. 1 shows a flow chart of an uplink data transmission method provided by an embodiment of the present application. Figure 2 As shown, the uplink data transmission method provided in the embodiment of the present application may include the following steps 101 and 102.

[0037] Step 101: When an uplink data transmission apparatus is configured to transmit uplink data using a first waveform, the uplink data transmission apparatus receives a target DCI from a network-side device.

[0038] Optionally, in an embodiment of the present application, the first waveform may be any one of the following: CP-OFDM, DFT-S-OFDM.

[0039] Optionally, in an embodiment of the present application, the uplink data transmission apparatus may receive RRC signaling from a network-side device, and configure the uplink data transmission apparatus to transmit uplink data using a first waveform according to a transformPrecoder in the RRC signaling.

[0040] In the embodiment of the present application, the above-mentioned target DCI is used to schedule target uplink data.

[0041] Step 102: When 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.

[0042] In the embodiment of the present application, the above indication information is used to indicate: transmission parameters of the target uplink data.

[0043] Optionally, in an embodiment of the present application, the above-mentioned indication information may be one indication information, or may include multiple sub-indication information.

[0044] Optionally, in an embodiment of the present application, the above-mentioned indication information includes at least one of the following: TPMI field, sounding reference signal resource indication information SRI field, frequency domain resource allocation indication information FDRA field, modulation and coding scheme MCS index value, and channel state information CSI request field.

[0045] Further optionally, in an embodiment of the present application, the above-mentioned indication information may also include at least one of the following: a physical / virtual resource module (physical / virtual Resource Block, PRB / VRB) allocation indication information field, a time domain resource allocation (Time Domain Resource Allocation, TDRA) indication information field, a demodulation reference signal (Demodulation Reference Signal, DMRS) indication information field, etc.

[0046] Optionally, in the embodiment of the present application, when the first waveform is CP-OFDM and the second waveform is DFT-S-OFDM, the indication information satisfies the first preset condition including at least one of the following:

[0047] The channel rank number rank corresponding to the TPMI domain is less than or equal to the first threshold;

[0048] The channel rank number rank corresponding to the SRI domain is less than or equal to the second threshold;

[0049] The physical resource blocks (PRBs) indicated by the FDRA field are consecutive PRBs.

[0050] The MCS index value is less than a third threshold;

[0051] The indication information does not include the CSI request field;

[0052] The indication information includes a CSI request field, and the CSI request field is not used to trigger the uplink data transmission device to report a CSI report.

[0053] In an embodiment of the present application, if the indication information satisfies the first preset condition, it can be considered that the uplink data transmission device is scheduled for single-stream transmission. When the uplink data transmission device adopts CP-OFDM for single-stream transmission, the PAPR of the reference signal symbol will be high. Therefore, the uplink data transmission device can adopt DFT-S-OFDM waveform for single-stream transmission (that is, transmitting target uplink data) to reduce the PAPR of the reference signal symbol.

[0054] 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 satisfies the first preset condition including at least one of the following:

[0055] The rank corresponding to the TPMI domain is greater than the first threshold;

[0056] The rank corresponding to the SRI domain is greater than the second threshold;

[0057] The PRBs indicated by the FDRA field are continuous or discontinuous PRBs;

[0058] The MCS index value is greater than a third threshold;

[0059] The indication information includes a CSI request field.

[0060] In an embodiment of the present application, if the indication information satisfies the first preset condition, it can be considered that the uplink data transmission device is scheduled for multi-stream transmission. When the uplink data transmission device adopts DFT-S-OFDM for multi-stream transmission, the PAPR of the reference signal symbol will be high. Therefore, the uplink data transmission device can adopt CP-OFDM waveform for multi-stream transmission (that is, transmitting target uplink data) to reduce the PAPR of the reference signal symbol.

[0061] In an embodiment of the present application, when the uplink data transmission device is configured to use CP-OFDM to transmit uplink data, if the uplink data transmission device is scheduled for single-stream transmission and meets the first preset condition, the uplink data transmission device can use DFT-S-OFDM to transmit the target uplink data.

[0062] When the uplink data transmission device is configured to use CP-OFDM to transmit uplink data, if the uplink data transmission device is scheduled for single-stream transmission and does not meet the first preset condition, the uplink data transmission device still uses CP-OFDM to transmit the target uplink data.

[0063] When the uplink data transmission device is configured to use DFT-S-OFDM to transmit uplink data, if the uplink data transmission device is scheduled for multi-stream transmission and meets the first preset condition, the uplink data transmission device can use CP-OFDM to transmit the target uplink data.

[0064] In the uplink data transmission method provided by the 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 can receive a target DCI for scheduling target uplink data from a network-side device, and when the indication information included in the target DCI for indicating the transmission parameters of the target uplink data meets a first preset condition, directly adopt the second waveform to transmit the target uplink data. Since, when the uplink data transmission device is configured to transmit uplink data using a first waveform, the uplink data transmission device can determine whether the indication information included in the target DCI meets the first preset condition, and when it is determined that the indication information meets the first preset condition, adopt the second waveform to transmit the target uplink data, instead of adopting the pre-configured first waveform to transmit the target uplink data, the PAPR of the reference signal symbols can be reduced, thereby improving the power amplifier efficiency of the uplink data transmission device.

[0065] In an embodiment of the present application, if the uplink data transmission device adopts a second waveform to transmit target uplink data, it may be possible that certain sub-indication information in the target DCI is invalid for the second waveform. In this way, the uplink data transmission device can adopt the second waveform to transmit the target uplink data based on sub-indication information other than the certain sub-indication information, that is, ignore the certain sub-indication information.

[0066] The following description will be given by taking the case where the aforementioned certain sub-indication information is Q sub-indication information as an example.

[0067] Optionally, in the embodiment of the present application, the above indication information includes N sub-indication information, where N is a positive integer. Figure 2 ,like Figure 3 As shown, the above step 102 can be specifically implemented through the following step 102a.

[0068] Step 102a: When Q sub-indication information among the N sub-indication information meet the second preset condition, the uplink data transmission device transmits the target uplink data using the second waveform according to the other sub-indication information.

[0069] In the embodiment of the present application, the above-mentioned other sub-indication information is: the sub-indication information among the N sub-indication information except the Q sub-indication information, where Q is a positive integer.

[0070] It can be understood that the uplink data transmission device adopts the second waveform to transmit the target uplink data according to the other sub-indication information, that is, the uplink data transmission device ignores the Q sub-indication information that meets the second preset condition among the N sub-indication information.

[0071] Further optionally, in an embodiment of the present application, the second preset condition may specifically be: the sub-indication information is invalid for the second waveform.

[0072] Exemplarily, assuming that N sub-indication information includes a phase tracking reference signal (PTRS)-DMRS association information field, the PTRS-DMRS association is 2 bits, and the PTRS-DMRS association is invalid for the second waveform (e.g., DFT-S-OFDM), then the uplink data transmission device can ignore the PTRS-DMRS association.

[0073] In the embodiment of the present application, the uplink data transmission device can use the second waveform to transmit the target uplink data according to the transmission parameters indicated by other sub-indication information.

[0074] It can be seen that since the uplink data transmission device can use the second waveform to transmit the target uplink data based on the other sub-indication information that is valid for the second waveform among the N sub-indication information included in the target DCI, and will not transmit the target uplink data based on the Q sub-indication information that is invalid for the second waveform, the reliability of the uplink data transmission device in transmitting uplink data can be improved.

[0075] In the embodiment of the present application, the uplink data transmission device may further keep the size of a certain sub-indication information among the multiple sub-indication information unchanged, and perform a new interpretation on the certain sub-indication information.

[0076] The following description will be given by taking the case where the above sub-indication information is a DMRS indication information field as an example.

[0077] Optionally, in an embodiment of the present application, the indication information includes: a first demodulation reference signal DMRS indication information field, the first DMRS indication information field is used to indicate: when the target uplink data is configured to be transmitted using the first waveform, the DMRS transmission port used by the target uplink data. Figure 2 ,like Figure 4As shown, before "the uplink data transmission device adopts the second waveform to transmit the target uplink data" in the above step 102, the uplink data transmission method provided in the embodiment of the present application can also include the following step 301, and the above step 102 can be specifically implemented by the following step 102b.

[0078] Step 301: When the indication information included in the target DCI satisfies a first preset condition, the uplink data transmission apparatus determines a target transmission port according to a first DMRS indication information field.

[0079] Further optionally, in an embodiment of the present application, the uplink data transmission apparatus may determine the target transmission port based on the first DMRS indication information field and the first DMRS indication table (or the second DMRS indication table) based on a pre-configured first DMRS indication table of the first waveform and a pre-configured second DMRS indication table of the second waveform. The first DMRS indication table includes at least one state, the second DMRS indication table includes at least one state, and the number of states in the first DMRS indication table is different from the number of states in the second DMRS indication table.

[0080] Exemplarily, Table 1 shows a DMRS indication table corresponding to DFT-S-OFDM.

[0081] Table 1

[0082]

[0083] As shown in Table 1, the DMRS indication table includes 4 states (ie, the state quantity value is 4), with a total of 2 bits for indication.

[0084] Table 2 shows the DMRS indication table corresponding to CP-OFDM.

[0085] Table 2

[0086]

[0087] As shown in Table 2, the DMRS indication table includes 6 states (ie, the state quantity value is 6), with a total of 3 bits of indication.

[0088] Optionally, in a possible implementation manner of the embodiment of the present application, the first DMRS indication information field corresponds to X bits, where X is determined based on the waveform with a larger state quantity value between the first waveform and the second waveform, and X is a positive integer.

[0089] Further optionally, in the embodiment of the present application, X is the bit of the waveform with a larger state quantity value between the first waveform and the second waveform.

[0090] For example, assuming that the state quantity value of the first waveform is 6 and the first waveform occupies 3 bits, and the state quantity value of the second waveform is 4 and the second waveform occupies 2 bits, then X is: the bit of the waveform with the larger state quantity value (i.e., the first waveform) between the first waveform and the second waveform, i.e., 3 bits.

[0091] In the embodiment of the present application, when the state quantity value corresponding to the second waveform is less than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit. The target bit is the first Y bits or the last Z bits of the X bits, where Y and Z are both positive integers.

[0092] Further optionally, in the embodiment of the present application, Y and Z may be the same or different, that is, Y=Z, or Y≠Z.

[0093] For example, assuming that the second waveform is DFT-S-OFDM and the first waveform is CP-OFDM, combined with Table 1 and Table 2, the state quantity value corresponding to DFT-S-OFDM is less than the state quantity value corresponding to CP-OFDM, then the target transmission port is: the first Y (for example, 2) DMRS ports indicated by the ratio characteristic, or the last Z (for example, 2) DMRS ports indicated by the ratio characteristic.

[0094] In an embodiment of the present application, when the state quantity value corresponding to the second waveform is greater than the state quantity value corresponding to the first waveform, the DMRS information field length and the above-mentioned target transmission port are: the transmission port determined according to the state corresponding to the second waveform.

[0095] For example, assuming that the second waveform is CP-OFDM and the first waveform is DFT-S-OFDM, combined with Table 1 and Table 2, the number of states corresponding to CP-OFDM is greater than the number of states corresponding to DFT-S-OFDM, then the DMRS information field length and the target transmission port are: the transmission port determined according to the state corresponding to CP-OFDM (i.e., the 6 states in Table 2).

[0096] It can be seen that since the uplink data transmission device can re-interpret the first DMRS indication information based on the state quantity value corresponding to the second waveform and the state quantity value corresponding to the first waveform to determine the target transmission port, the reliability of the uplink data transmission device in transmitting uplink data can be improved.

[0097] Optionally, in another possible implementation of the embodiment of the present application, the above step 301 can be specifically implemented through the following steps 301a and 301b.

[0098] Step 301a: When the indication information included in the target DCI satisfies the first preset condition, the uplink data transmission device determines the index value of the second DMRS indication information field based on the M first mapping relationships and the index value of the first DMRS indication information field.

[0099] In the embodiment of the present application, each of the M first mapping relationships is respectively: a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms, where M is a positive integer;

[0100] Further optionally, in an embodiment of the present application, the M first mapping relationships may be mapping relationships pre-stored in the uplink data transmission device.

[0101] In the embodiment of the present application, the second DMRS indication information field is used to indicate: when the second waveform is configured to be used to transmit the target uplink data, the DMRS transmission port used by the target uplink data.

[0102] Further optionally, in an embodiment of the present application, the uplink data transmission device can determine a matching first index value from the M first index values ​​of the first waveform based on the index value of the first DMRS indication information field, and then determine a mapped second index value from the M second index values ​​of the second waveform based on the first index value, and determine the second index value as the index value of the second DMRS indication information field.

[0103] Exemplarily, in combination with Table 1 and Table 2, the uplink data transmission device can determine the index value of the second DMRS indication information field (for example, vaule=0 in Table 1) based on the index value of the first DMRS indication information field (for example, vaule=2 in Table 2) based on the M first mapping relationships, or determine the index value of the second DMRS indication information field (for example, vaule=1 in Table 1) based on the index value of the first DMRS indication information field (for example, vaule=3 in Table 2), or determine the index value of the second DMRS indication information field (for example, vaule=2 in Table 1) based on the index value of the first DMRS indication information field (for example, vaule=4 in Table 2), or determine the index value of the second DMRS indication information field (for example, vaule=3 in Table 1) based on the index value of the first DMRS indication information field (for example, vaule=5 in Table 2).

[0104] Step 301b: The uplink data transmission device determines the target transmission port according to the index value of the second DMRS indication information field.

[0105] Further optionally, in the embodiment of the present application, the uplink data transmission apparatus 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).

[0106] It can be seen that since 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 M first mapping relationships, and determine the target transmission port based on the new index value, the reliability of the uplink data transmission device in transmitting uplink data can be improved.

[0107] Step 102b: The uplink data transmission device transmits DMRS using the second waveform according to the target transmission port.

[0108] It should be noted that in the embodiment of the present application, the DMRS indication information field in the target DCI is taken as an example to illustrate how the uplink data transmission device reinterprets the sub-indication information and uses the second waveform to transmit DMRS. For other sub-indication information in the target DCI, the various steps in the above embodiment can be adopted, and the second waveform can be used to transmit other transmission parameters indicated by the other sub-indication information, transmit uplink data, and transmit target uplink data.

[0109] It can be seen that since the uplink data transmission device can re-interpret the first DMRS indication information to determine the target transmission port, the uplink data transmission device can use the second waveform to transmit DMRS according to the target transmission port, thereby improving the reliability of the uplink data transmission device in transmitting uplink data.

[0110] It should be noted that the uplink data transmission method provided in the embodiment of the present application can be performed by an uplink data transmission device, or a control module in the uplink data transmission device for performing the uplink data transmission method. In the embodiment of the present application, the uplink data transmission device provided in the embodiment of the present application is described by taking the uplink data transmission device performing the uplink data transmission method as an example.

[0111] Figure 5 FIG. 1 shows a possible structural diagram of a transmission device involved in an embodiment of the present application. Figure 5 As shown, the uplink data transmission device 60 may include: a receiving module 61 and a transmitting module 62 .

[0112] The receiving module 61 is configured to receive a target DCI from a network-side device when the uplink data transmission apparatus 60 is configured to transmit uplink data using a first waveform. The target DCI is used to schedule the target uplink data. The transmitting module 62 is configured 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. The indication information indicates transmission parameters for the target uplink data.

[0113] In a possible implementation manner, the indication information includes at least one of the following: a TPMI field, an SRI field, an FDRA field, an MCS index value, and a CSI request field.

[0114] 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 preset condition, including at least one of the following:

[0115] The rank corresponding to the TPMI domain is less than or equal to the first threshold; the rank corresponding to the SRI domain is less than or equal to the second threshold; the PRB indicated by the FDRA domain is a continuous PRB; the MCS index value is less than the third threshold; the indication information does not include the CSI request domain; the indication information includes the CSI request domain, and the CSI request domain is not used to trigger the uplink data transmission device 60 to report the CSI report.

[0116] In a possible implementation, the indication information includes: a first DMRS indication information field, the first DMRS indication information field is used to indicate: when the target uplink data is configured to be transmitted using the first waveform, the DMRS transmission port used by the target uplink data. Figure 5 ,like Figure 6 As shown, the uplink data transmission device 60 provided in this embodiment of the present application may further include a processing module 63. The processing module 63 is configured to determine a target transmission port based on the first DMRS indication information field. The transmission module 62 is specifically configured to transmit the DMRS using the second waveform based on the target transmission port determined by the processing module 63.

[0117] In one possible implementation, the first DMRS indication information field corresponds to X bits, where X is determined based on the waveform with the larger state quantity value between the first and second waveforms, and X is a positive integer. When the state quantity value corresponding to the second waveform is less than the state quantity value corresponding to the first waveform, the target transmission port is the transmission port indicated by the target bit. When 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 the transmission port determined based on the state corresponding to the second waveform. The target bits are the first Y bits or the last Z bits of the X bits, and both Y and Z are positive integers.

[0118] In one possible implementation, the processing module 63 is specifically configured to determine, based on M first mapping relationships and according to the index value of the first DMRS indication information field, an index value of the second DMRS indication information field, where M is a positive integer; and determine a target transmission port based on the 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; and the second DMRS indication information field is configured to indicate a DMRS transmission port used for the target uplink data when the target uplink data is transmitted using the second waveform.

[0119] In one possible implementation, the indication information includes N sub-indication information, where N is a positive integer. The transmission module 62 is specifically configured to transmit the target uplink data using the second waveform based on the remaining sub-indication information when Q sub-indication information among the N sub-indication information meet the second preset condition. The remaining sub-indication information is the sub-indication information among the N sub-indication information, excluding the Q sub-indication information, where Q is a positive integer.

[0120] The uplink data transmission device provided in the embodiment of the present application is configured to use a first waveform to transmit uplink data. The uplink data transmission device can determine whether the indication information included in the target DCI meets the first preset condition, and when it is determined that the indication information meets the first preset condition, use the second waveform to transmit the target uplink data instead of using the preconfigured first waveform to transmit the target uplink data. Therefore, the PAPR of the reference signal symbols can be reduced, thereby improving the power amplifier efficiency of the uplink data transmission device.

[0121] The uplink data transmission device in the embodiments of the present application can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal can include but is not limited to the types of terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM, or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.

[0122] The uplink data transmission device provided in the embodiment of the present application can achieve Figures 1 to 4 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0123] Optional, such as Figure 7 As shown, an embodiment of the present application also provides a communication device 70, including a processor 71, a memory 72, and a program or instruction stored in the memory 72 and executable on the processor 71. For example, when the communication device 70 is a terminal, the program or instruction is executed by the processor 71 to implement the various processes of the above-mentioned uplink data transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0124] An embodiment of the present application also provides a terminal including a processor and a communication interface, wherein the communication interface is used to receive target downlink control information DCI from a network-side device when the terminal is configured to use a first waveform to transmit uplink data, and the target DCI is used to schedule target uplink data; when the indication information included in the target DCI meets a first preset condition, a second waveform is used to transmit the target uplink data; wherein the indication information is used to indicate: the transmission parameters of the target uplink data. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 8 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0125] The terminal 100 includes but is 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 at least some of the components of a processor 110.

[0126] Those skilled in the art will understand that the terminal 100 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 110 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 8 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0127] It should be understood that in an 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 the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. 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. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0128] In this embodiment of the present application, RF unit 101 receives downlink data from a network-side device and transmits it to processor 110 for processing. Furthermore, RF unit 101 transmits uplink data to the network-side device. Typically, RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0129] The memory 109 can be used to store software programs or instructions and various data. The memory 109 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 109 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0130] Processor 110 may include one or more processing units. Optionally, processor 110 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 110.

[0131] Among them, the radio frequency unit 101 is used to receive a target DCI from a network side device when the terminal is configured to use a first waveform to transmit uplink data, and the target DCI is used to schedule target uplink data; when the indication information included in the target DCI meets the first preset condition, the target uplink data is transmitted using a second waveform.

[0132] The above indication information is used to indicate: transmission parameters of target uplink data.

[0133] The terminal provided in the embodiment of the present application, when the terminal is configured to use the first waveform to transmit uplink data, can determine whether the indication information included in the target DCI meets the first preset condition, and when it is determined that the indication information meets the first preset condition, use the second waveform to transmit the target uplink data instead of using the preconfigured first waveform to transmit the target uplink data. Therefore, the PAPR of the reference signal symbol can be reduced, thereby improving the power amplifier efficiency of the terminal.

[0134] Optionally, in an embodiment of the present application, the above-mentioned indication information includes: a first demodulation reference signal DMRS indication information field, and the first DMRS indication information field is used to indicate: when the target uplink data is configured to be transmitted using the first waveform, the transmission port of the DMRS used by the target uplink data.

[0135] The processor 110 is further configured to determine a target transmission port according to the first DMRS indication information field.

[0136] The radio frequency unit 101 is specifically configured to transmit the DMRS using a second waveform according to a target transmission port.

[0137] As can be seen, since the terminal can perform a new interpretation on the first DMRS indication information to determine the target transmission port, the terminal can transmit DMRS using the second waveform according to the target transmission port, thereby improving the reliability of uplink data transmission by the terminal.

[0138] Optionally, in an embodiment of the present application, the processor 110 is specifically used to determine the index value of the second DMRS indication information field based on the index value of the first DMRS indication information field based on M first mapping relationships, where M is a positive integer; and determine the target transmission port based on the index value of the second DMRS indication information field.

[0139] Among them, each first mapping relationship is: the mapping relationship between the index values ​​of different DMRS indication information fields corresponding to different waveforms; the above-mentioned second DMRS indication information field is used to indicate: when it is configured to use the second waveform to transmit the target uplink data, the DMRS transmission port used by the target uplink data.

[0140] It can be seen that since the terminal can re-determine a new index value based on the index value of the first DMRS indication information field based on M first mapping relationships, and determine the target transmission port based on the new index value, the reliability of the terminal transmitting uplink data can be improved.

[0141] Optionally, in an embodiment of the present application, the above-mentioned indication information includes N sub-indication information, where N is a positive integer.

[0142] The radio frequency unit 101 is specifically configured to, when Q sub-indication information among the N sub-indication information meet a second preset condition, transmit target uplink data using a second waveform according to other sub-indication information.

[0143] The other sub-indication information mentioned above refers to the sub-indication information other than the Q sub-indication information among the N sub-indication information, where Q is a positive integer.

[0144] It can be seen that since the terminal can use the second waveform to transmit the target uplink data based on the other sub-indication information that is valid for the second waveform among the N sub-indication information included in the target DCI, and will not transmit the target uplink data based on the Q sub-indication information that is invalid for the second waveform, the reliability of the terminal's uplink data transmission can be improved.

[0145] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned uplink data transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0146] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0147] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned uplink data transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0148] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0149] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0150] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0151] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A method for uplink data transmission, characterized in that: The method comprises: When the user equipment UE is configured to transmit uplink data using the first waveform, the UE receives target downlink control information DCI from the network side device, where the target DCI is used to schedule target uplink data; When 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: transmission parameters of the target uplink data; The indication information includes at least one of the following: 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 preset condition, including at least one of the following: The channel rank number rank corresponding to the TPMI domain is less than or equal to a first threshold; The channel rank number rank corresponding to the SRI domain 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.

2. The method according to claim 1, characterized in that The indication information also includes at least one of the following: frequency domain resource allocation indication information FDRA field, modulation and coding scheme MCS index value.

3. The method according to claim 2, characterized in that In a case where 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 that satisfies the first preset condition further includes at least one of the following: The physical resource blocks PRB indicated by the FDRA field are continuous PRBs; The MCS index value is less than a third threshold.

4. The method according to claim 1, wherein The indication information includes: a first demodulation reference signal DMRS indication information field, where the first DMRS indication information field is used to indicate: when the target uplink data is transmitted using the first waveform, a DMRS transmission port used by the target uplink data; Before the UE transmits the target uplink data using the second waveform, the method further includes: The UE determines a target transmission port according to the first DMRS indication information field; The UE transmits the target uplink data using a second waveform, including: The UE transmits the DMRS using the second waveform according to the target transmission port.

5. The method according to claim 4, characterized in that The first DMRS indication information field corresponds to X bits, where X is determined based on the waveform with a larger state quantity value between the first waveform and the second waveform, and X is a positive integer; When 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; When 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 according to the state corresponding to the second waveform; The target bits are: the first Y bits or the last Z bits of the X bits, where Y and Z are both positive integers.

6. The method according to claim 4, characterized in that The UE determining a target transmission port according to the first DMRS indication information field includes: The UE determines, based on M first mapping relationships and according to the index value of the first DMRS indication information field, an index value of the second DMRS indication information field, where M is a positive integer; The UE determines the target transmission port according to the index value of the second DMRS indication information field; Wherein, each first mapping relationship is respectively: a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms; The second DMRS indication information field is used to indicate: when the target uplink data is transmitted using the second waveform, a DMRS transmission port used by the target uplink data.

7. The method according to claim 1, characterized in that The indication information includes N sub-indication information, where N is a positive integer; The UE transmits the target uplink data using a second waveform, including: When Q sub-indication information among the N sub-indication information meet a second preset condition, the UE transmits the target uplink data using the second waveform according to other sub-indication information; The other sub-indication information is: the sub-indication information among the N sub-indication information except the Q sub-indication information, where Q is a positive integer.

8. An uplink data transmission device, characterized in that: The uplink data transmission device includes: a receiving module and a transmitting module; The receiving module is configured to receive a target DCI from a network-side device when the uplink data transmission apparatus is configured to transmit uplink data using a first waveform, wherein the target DCI is used to schedule target uplink data; The transmission module is configured to transmit the target uplink data using a second waveform when the indication information included in the target DCI received by the receiving module meets a first preset condition; The indication information is used to indicate: transmission parameters of the target uplink data; The indication information includes at least one of the following: 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 preset condition, including at least one of the following: The channel rank number rank corresponding to the TPMI domain is less than or equal to a first threshold; The channel rank number rank corresponding to the SRI domain 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.

9. The uplink data transmission device according to claim 8, characterized in that: The indication information also includes at least one of the following: FDRA domain, MCS index value.

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

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

12. The uplink data transmission device according to claim 11, characterized in that: The first DMRS indication information field corresponds to X bits, where X is determined based on the waveform with a larger state quantity value between the first waveform and the second waveform, and X is a positive integer; When 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; When 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 according to the state corresponding to the second waveform; The target bits are: the first Y bits or the last Z bits of the X bits, where Y and Z are both positive integers.

13. The uplink data transmission device according to claim 11, wherein: The processing module is specifically configured to determine, based on the M first mapping relationships and according to the index value of the first DMRS indication information field, an index value of the second DMRS indication information field, where M is a positive integer; and determine the target transmission port according to the index value of the second DMRS indication information field; Wherein, each first mapping relationship is respectively: a mapping relationship between index values ​​of different DMRS indication information fields corresponding to different waveforms; The second DMRS indication information field is used to indicate: when the target uplink data is transmitted using the second waveform, a DMRS transmission port used by the target uplink data.

14. The uplink data transmission device according to claim 8, wherein: The indication information includes N sub-indication information, where N is a positive integer; The transmission module is specifically configured to transmit the target uplink data using the second waveform according to the other sub-indication information when Q sub-indication information among the N sub-indication information meet the second preset condition; The other sub-indication information is: the sub-indication information among the N sub-indication information except the Q sub-indication information, where Q is a positive integer.

15. A terminal, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the uplink data transmission method according to any one of claims 1 to 7.

16. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the uplink data transmission method according to any one of claims 1 to 7 is implemented.

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