Transmission waveform switching indication method and device, network equipment, terminal and medium

Abstract

The invention provides a transmission waveform switching indication method and device, network equipment, a terminal and a medium, and relates to the technical field of wireless communication. The transmission waveform switching indication method comprises the steps that a switching indication field is configured in a high-level signaling sent to a terminal, and the switching indication field is used for indicating the terminal to start or not start an uplink transmission waveform switching function; if the indication field indicates that the terminal starts the uplink transmission waveform switching function, a specified field in downlink control information (DCI) is configured as a waveform switching indication based on the switching indication field, and the waveform switching indication is used for indicating the terminal to switch an uplink transmission waveform; and sending the DCI carrying the waveform switching indication to the terminal. According to the technical scheme, whether waveform switching is started or not and the switching indication selection information is indicated through the high-level signaling, the waveform dynamic switching is performed according to the specified field of the uplink scheduling DCI, and the switching mode can ensure that decoding of the DCI by the terminal is not influenced while the waveform switching indication is completed.

Description

Background Art

[0002] The transmission waveforms supported by the NR (New Radio) system in uplink transmission include: DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) and CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing).

[0003] According to the latest 3GPP Rel-17 protocol, only semi-static configuration of uplink transmission waveforms through radio resource control (RRC) signaling is supported, and uplink transmission waveforms cannot be switched dynamically, which may cause certain transmission performance losses.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present disclosure is to provide a method, device, network equipment, terminal and storage medium for indicating switching of a transmission waveform, which at least to a certain extent overcomes the problem in the related art that a terminal cannot be dynamically indicated to switch an uplink transmission waveform.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0007] According to one aspect of the present disclosure, a method for indicating switching of a transmission waveform is provided, which is applied to a base station, and includes: configuring a switching indication field in high-layer signaling sent to a terminal, the switching indication field being used to indicate to the terminal whether to turn on or off an uplink transmission waveform switching function; if the indication field indicates that the terminal turns on the uplink transmission waveform switching function, configuring a specified field in downlink control information DCI as a waveform switching indication based on the switching indication field, the waveform switching indication being used to instruct the terminal to switch an uplink transmission waveform; and sending the DCI carrying the waveform switching indication to the terminal.

[0008] In one embodiment, configuring a switching indication field in a high-level signaling sent to a terminal includes: configuring a new field with a first value in the high-level signaling as the switching indication field, the first value being used to indicate that the uplink transmission waveform switching function is not enabled; or configuring a new field with a second value in the high-level signaling as the switching indication field, the second value being used to indicate that the uplink transmission waveform switching function is enabled.

[0009] In one embodiment, the format of the DCI used to configure the waveform switching indication is a DCI format for scheduling an uplink physical shared channel PUSCH.

[0010] In one embodiment, the configuration of the designated field in the downlink control information DCI as a waveform switching indication based on the switching indication field includes: the second value is also used to indicate the switching threshold, so as to generate the waveform switching indication when the relationship between the value of the designated field and the switching threshold satisfies the switching relationship.

[0011] In one embodiment, a designated field in the downlink control information DCI is configured as a waveform switching indication based on the switching indication field, including: the second value is a binary field of a specified number of bits, the binary field includes a first group of fields and a second group of fields, the first group of fields is used to configure the functional field to which the designated field in the DCI belongs, and the second group of fields is used to indicate the character position in the designated field as a waveform switching indication identifier to obtain the waveform switching indication.

[0012] In one embodiment, the second group of fields is used to indicate the character position in the designated field as a waveform switching indication mark, including: if the waveform switching indication mark is not configured, then instructing the terminal to switch from the first uplink transmission waveform to the second uplink transmission waveform; if the waveform switching indication mark is configured, then instructing the terminal to switch from the second uplink transmission waveform to the first uplink transmission waveform.

[0013] In one embodiment, the second group of fields is used to indicate the character position in the designated field as a waveform switching indication identifier, including: if the waveform switching indication identifier is configured, instructing the terminal to perform uplink transmission waveform switching; if the waveform switching indication identifier is not configured, instructing the terminal not to perform uplink transmission waveform switching.

[0014] In one embodiment, the function field includes a field indicating a modulation and coding strategy MCS in the DCI.

[0015] In one embodiment, the function field includes a Transmission Precoding Matrix Indication (TPMI) field in the DCI.

[0016] In one embodiment, the function field includes an antenna ports field in the DCI.

[0017] In one embodiment, the high-layer signaling is radio resource control RRC signaling.

[0018] In one embodiment, the first uplink transmission waveform is CP-OFDM, and the second uplink transmission waveform is DFT-S-OFDM.

[0019] According to another aspect of the present disclosure, a method for indicating switching of a transmission waveform is provided, which is applied to a terminal, and includes: extracting a switching indication field in received high-level signaling; when detecting that the switching indication field indicates turning on, turning on the switching function of the uplink transmission waveform; receiving downlink control information DCI; and when detecting that the DCI carries a waveform switching indication, switching the uplink transmission waveform in the next time slot based on the waveform switching indication.

[0020] In one embodiment, the switching function of the uplink transmission waveform is turned on when the switching indication field is detected, including: extracting a new field in the high-level signaling; if it is detected that the value of the new field is a second value, the switching function of the uplink transmission waveform is turned on.

[0021] In one embodiment, the method further includes: if it is detected that the value of the newly added field is the first value, then the switching function of the uplink transmission waveform is not enabled.

[0022] In one embodiment, when it is detected that the DCI carries a waveform switching indication, the uplink transmission waveform is switched in the next time slot based on the waveform switching indication, including: determining a switching threshold based on the second value; when it is detected that the relationship between the value of the specified field in the DCI and the switching threshold satisfies the switching relationship, determining to carry the waveform switching indication to switch the uplink transmission waveform in the next time slot.

[0023] In one embodiment, when it is detected that the DCI carries a waveform switching indication, the uplink transmission waveform is switched in the next time slot based on the waveform switching indication, including: in response to the received DCI, determining a functional field for configuring the waveform switching indication based on a first group of fields in the second value, determining a waveform switching indication identifier in a designated field based on a second group of fields in the second value, and switching the uplink transmission waveform in the next time slot when it is determined that the waveform switching indication is carried.

[0024] In one embodiment, the switching of the uplink transmission waveform includes: if the terminal transmits based on the first uplink transmission waveform, switching from the first uplink transmission waveform to a second uplink transmission waveform based on the waveform switching indication flag.

[0025] In one embodiment, the switching of the uplink transmission waveform includes: switching from a current uplink transmission waveform to another uplink transmission waveform based on the waveform switching indication mark.

[0026] In one embodiment, the determining of the functional field for configuring the waveform switching indication based on the first group of fields in the second value includes: determining the field indicating the modulation and coding strategy MCS, the transmission precoding matrix indication TPMI field or the antenna ports field for configuring the waveform switching indication based on the first group of fields in the second value.

[0027] According to another aspect of the present disclosure, a switching indication device for a transmission waveform is provided, comprising: a first configuration module, configured to configure a switching indication field in high-layer signaling sent to a terminal, the switching indication field being used to instruct the terminal to turn on or off an uplink transmission waveform switching function; a second configuration module, configured to configure a specified field in downlink control information DCI as a waveform switching indication if the indication field indicates that the terminal turns on the uplink transmission waveform switching function, the waveform switching indication being used to instruct the terminal to switch an uplink transmission waveform sending module, and to send the DCI carrying the waveform switching indication to the terminal.

[0028] According to another aspect of the present disclosure, a switching indication device for a transmission waveform is provided, which is applied to a terminal, and includes: an extraction module, used to extract a switching indication field in a received high-level signaling; an activation module, used to activate a switching function of an uplink transmission waveform when detecting that the switching indication field indicates activation; a receiving module, used to receive downlink control information DCI; and a switching module, used to switch the uplink transmission waveform in a next time slot based on the waveform switching indication when detecting that the DCI carries a waveform switching indication.

[0029] According to another aspect of the present disclosure, a network device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; the processor is configured to execute the switching indication method of the transmission waveform of the first aspect mentioned above by executing the executable instructions.

[0030] According to another aspect of the present disclosure, a terminal is provided, comprising: a processor; and a memory for storing executable instructions of the processor; the processor is configured to execute the transmission waveform switching indication method of the second aspect mentioned above by executing the executable instructions.

[0031] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned method for indicating switching of a transmission waveform is implemented.

[0032] The switching indication scheme for the transmission waveform provided by the embodiment of the present disclosure is that the base station configures the switching indication field in the high-level signaling sent to the terminal so that the terminal can identify the received switching indication field, and determines whether to turn on the switching function of the uplink transmission waveform based on the switching indication field, and after turning on the switching function, further performs the uplink channel waveform switching indication based on the designated field in the received uplink scheduling DCI, and indicates the conventional scheduling and configuration of the uplink channel while realizing the indication of the dynamic switching of the waveform, and indicates whether the dynamic switching of the waveform can be turned on and the dynamic switching indication selection information in the high-level signaling, and accordingly, the waveform is indicated and the dynamic switching is indicated according to the corresponding bit of the designated field of the uplink scheduling DCI. This switching method can ensure that the terminal will not affect the decoding of the DCI while completing the waveform switching indication. Furthermore, by configuring the switching indication field, it is also helpful to ensure that the performance of terminal devices that do not support waveform switching is not affected by signaling.

[0033] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0035] Figure 1 A schematic diagram showing a switching indication system for a transmission waveform in an embodiment of the present disclosure is shown;

[0036] Figure 2 A flow chart of a switching indication method of a transmission waveform in an embodiment of the present disclosure is shown;

[0037] Figure 3 A flow chart showing another method for indicating switching of a transmission waveform in an embodiment of the present disclosure is shown;

[0038] Figure 4 A flow chart of another transmission waveform switching indication method according to an embodiment of the present disclosure is shown;

[0039] Figure 5 A flow chart of another transmission waveform switching indication method according to an embodiment of the present disclosure is shown;

[0040] Figure 6 A flow chart of another transmission waveform switching indication method according to an embodiment of the present disclosure is shown;

[0041] Figure 7 A schematic diagram showing a switching indication device for a transmission waveform in an embodiment of the present disclosure is shown;

[0042] Figure 8 A schematic diagram showing another switching indication device for transmission waveform in an embodiment of the present disclosure;

[0043] Fig. 9 A structural block diagram of a computer device in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0045] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0046] In 5G, the waveform used for uplink transmission is configured by the base station. The NR system supports two transmission waveforms in uplink transmission, namely DFT-S-OFDM and CP-OFDM.

[0047] Among them, the advantage of DFT-S-OFDM is its low peak-to-average ratio and good power amplifier efficiency. The disadvantage is that the frequency domain resource allocation must be continuous and currently only supports single-stream transmission. Therefore, it is more suitable for situations with poor channel conditions, such as serving cell edge users to improve coverage performance.

[0048] The advantage of CP-OFDM is that it supports non-continuous resource allocation and multi-stream transmission, and can provide higher data rates. The disadvantage is that the peak-to-average ratio is relatively high. Therefore, it is more suitable for situations with better channel conditions, such as serving users near and midpoints of the cell to improve system capacity.

[0049] PDCCH (Physical Downlink Control Channel) is a control channel defined by the NR standard. The payload carried on PDCCH is called downlink control information (DCI). DCI contains uplink or downlink data channel scheduling information and other control information for a terminal or a group of terminals.

[0050] Currently, some fields in the DCI used for uplink scheduling in NR still have reserved information and have the potential to be used for waveform switching indication. Therefore, by configuring this reserved information, dynamic indication of switching of uplink transmission waveforms can be achieved.

[0051] According to the technical solution disclosed in the present invention, by multiplexing the existing fields of the uplink scheduling DCI to complete the waveform switching indication, the efficient and flexible switching and the stable communication performance are guaranteed.

[0052] Figure 1 A schematic diagram of a 5G core network networking architecture in an embodiment of the present disclosure is shown.

[0053] like Figure 1 As shown, a networking architecture of an independently networked 5G core network includes a 5G core network 102, a 5G base station 104 and a terminal 106.

[0054] Among them, the 5G core network 102 and the 5G base station 104 are connected based on the NG interface, and the 5G base stations 104 are connected based on the Xn interface.

[0055] In addition, the interaction between the 5G base station 104 and the terminal 106 includes the downlink control information DCI sent by the 5G base station 104 to the terminal 106, which is used to carry the downlink control information of one or more cells with an RNTI (Radio Network Temporary Identity). It also provides the terminal 106 with physical layer resource allocation, power control commands, uplink and downlink HARQ and other information. DCI is transmitted through PDCCH (Physical Downlink Control Channel).

[0056] In the 5G system, that is, the NR system, the DCI format can be divided into at least three types, including: uplink allocation DCI Format 0_x, downlink allocation DCI Format 1_x and UE group common signaling DCI Format2_x.

[0057] In addition, those skilled in the art will appreciate that the transmission waveform switching indication disclosed herein is also applicable to the networking architecture of a non-independent 5G core network.

[0058] In the following, each step of the method for indicating switching of a transmission waveform in this exemplary implementation will be described in more detail with reference to the accompanying drawings and embodiments.

[0059] Figure 2 A flow chart of a switching indication method for a transmission waveform in an embodiment of the present disclosure is shown.

[0060] like Figure 2 As shown, according to a transmission waveform switching indication method of an embodiment of the present disclosure, a transmission waveform switching indication method is applied to a base station, comprising:

[0061] Step S202: configuring a switching indication field in the high-layer signaling sent to the terminal, where the switching indication field is used to instruct the terminal to enable or disable an uplink transmission waveform switching function.

[0062] Among them, the switching indication field is used to indicate whether the terminal turns on the switching function of the uplink transmission waveform. If it is turned on, the terminal can further identify the specific field representation in the switching indication field and the related identifiers in the DCI described below.

[0063] The terminal is specifically a terminal with dynamic waveform switching capability.

[0064] In addition, the field used to configure the handover indication field in the high-layer signaling may be an existing field or a newly added field.

[0065] The access layer high layer needs to establish an RRC connection during the random access process, and carry and send the registration request of the NAS layer through RRC signaling. The high layer signaling is the signaling related to the above access process.

[0066] Exemplarily, in one embodiment, the high-layer signaling is radio resource control RRC signaling.

[0067] Among them, RRC signaling is used to process the third layer information of the control plane between the terminal UE and UTRAN (UMTS Terrestrial Radio Access Network), including the allocation, reconfiguration and release of connection radio resources.

[0068] In addition, the high-layer signaling may also be NAS (Non Access Stratum, non-access stratum) signaling.

[0069] Step S204: If the indication field indicates that the terminal turns on the uplink transmission waveform switching function, a designated field in the downlink control information DCI is configured as a waveform switching indication based on the switching indication field, and the waveform switching indication is used to instruct the terminal to switch the uplink transmission waveform.

[0070] Wherein, based on the waveform switching indication, the terminal is instructed to switch the uplink transmission waveform. In one embodiment, the terminal is instructed to switch the uplink transmission waveform, including: instructing the terminal to switch from a first uplink transmission waveform to a second uplink transmission waveform; and / or instructing the terminal to switch from the second uplink transmission waveform to the first uplink transmission waveform.

[0071] In one embodiment, the first uplink transmission waveform is CP-OFDM, and the second uplink transmission waveform is DFT-S-OFDM.

[0072] Specifically, the waveform switching indication is generated based on the channel state, specifically by determining the quality of the current uplink channel by detecting the channel state, thereby determining the uplink transmission waveform of the matching terminal based on the quality of the current channel to ensure the reliability of the uplink transmission.

[0073] In addition, the designated field in the DCI refers to a field whose specific value has been reserved but has not been given a clear meaning. For example, a field has a total of 5 bits and the values ​​range from 0 to 31. Among these values, there are values ​​that are not given a clear meaning, that is, reserved values. By configuring the reserved value as an indication flag, the corresponding waveform switching indication can be generated and sent to the corresponding terminal through the DCI to instruct the terminal to switch the uplink transmission waveform.

[0074] Step S206: Send a DCI carrying a waveform switching indication to the terminal.

[0075] In this embodiment, the base station configures a switching indication field in the high-level signaling sent to the terminal so that the terminal can identify the received switching indication field, and determines whether to enable the switching function of the uplink transmission waveform based on the switching indication field, and after enabling the switching function, further performs an uplink channel waveform switching indication based on a designated field in the received uplink scheduling DCI, and indicates the conventional scheduling and configuration of the uplink channel while indicating the dynamic switching of the waveform. The high-level signaling indicates whether the dynamic switching of the waveform can be enabled and the dynamic switching indication selection information, and accordingly, the waveform is indicated and dynamically switched according to the corresponding bit of the designated field of the uplink scheduling DCI. This switching method can ensure that the terminal's decoding of the DCI will not be affected while completing the waveform switching indication.

[0076] Furthermore, by configuring the switching indication field, it is also helpful to ensure that the performance of terminal devices that do not support waveform switching is not affected by signaling.

[0077] In one embodiment, an implementation method for configuring a switching indication field in high-level signaling includes: configuring a new field with a first value in the high-level signaling as a switching indication field, wherein the first value is used to indicate that an uplink transmission waveform switching function is not enabled.

[0078] In one embodiment, another implementation method of configuring a switching indication field in high-level signaling includes: configuring a new field with a second value in high-level signaling as a switching indication field, wherein the second value is used to indicate enabling of an uplink transmission waveform switching function.

[0079] The newly added field refers to a field added before the field range of the currently defined high-layer signaling.

[0080] Taking RRC signaling as an example, the newly added fields can be understood as fields outside the functional fields that characterize the RRC connection management process (RRC CONNECTIONMANAGEMENT PROCEDURES), radio bearer control process (RADIO BEARER CONTROL PROCEDURES), RRC connection mobility process (RRC CONNECTION MOBILITY PROCEDURES) and measurement process (MEASUREMENTPROCEDURES).

[0081] In this embodiment, a field is added to the RRC to indicate whether dynamic waveform switching and dynamic switching indication selection information can be enabled, and the waveform and dynamic switching indication are indicated according to the corresponding bits of the existing fields of the uplink scheduling DCI. In this way, while completing the waveform switching indication, the impact on the system performance is small, and the UE's decoding of the DCI is not affected, and it is ensured that the performance of terminal equipment that does not support waveform switching will not be affected.

[0082] In one embodiment, configuring a designated field in downlink control information DCI as a waveform switching indication based on the switching indication field includes:

[0083] The second value is also used to indicate a switching threshold, so as to generate a waveform switching indication when the relationship between the value of the designated field and the switching threshold satisfies the switching relationship.

[0084] When the switching indication field indicates the switching threshold, that is, when the switching indication field takes a specific value, it can indicate that the corresponding field of DCI takes certain values ​​to perform dynamic waveform switching. For example, taking the specified field in DCI as MSC, the switching threshold corresponds to the index threshold of MCS. If this value is received, it is detected whether the index value of MCS indicated in DCI is higher than the index threshold. If it is higher, dynamic waveform switching is performed. For example, "10111", when the MCS value of DCI is 7 (4+2+1) or above, waveform switching occurs.

[0085] like Figure 3 As shown, in one embodiment, configuring a specified field in the downlink control information DCI as a waveform switching indication based on the switching indication field includes:

[0086] Step S302, the second value is a binary field of a specified number of bits, the binary field includes a first group of fields and a second group of fields, the first group of fields is used to configure the functional field to which the specified field in the DCI belongs, and the second group of fields is used to indicate the character position in the specified field as a waveform switching indication identifier to obtain a waveform switching indication.

[0087] The values ​​of the first group of fields correspond to the function fields used to indicate switching in the DCI, namely, the MCSTPMI or antenna ports described below. The last three bits correspond to n, where n indicates "using the nth bit of the function field as the waveform switching indication identifier."

[0088] In addition, except for the DCI field used for waveform switching, the remaining fields can be configured according to the switched waveform / current waveform as required, but must be agreed upon in advance between the UE and the network side.

[0089] Exemplarily, RRC signaling is used as high-layer information, and a 5-bit field dyn_wave_switch_ind is added to the RRC signaling as a switching indication field.

[0090] When dyn_wave_switch_ind='00000', ie, the first value, it indicates that automatic waveform switching is not enabled.

[0091] When dyn_wave_switch_ind = '10xxx', it indicates that the MCS in the DCI is used as the waveform switching indication.

[0092] When dyn_wave_switch_ind = '11xxx', it indicates that TPMI in DCI is used as the waveform switching indication.

[0093] Among them, "10" is the first group of fields, which is used to indicate the function field used for switching, and "xxx" is the second group of fields, corresponding to n, where n indicates "using the nth bit of the function field as the waveform switching indication identifier.

[0094] In one embodiment, the second group of fields is used to indicate the character position in the specified field as a waveform switching indication identifier, including: if the waveform switching indication identifier is not configured, then instructing the terminal to switch from the first uplink transmission waveform to the second uplink transmission waveform; if the waveform switching indication identifier is configured, then instructing the terminal to switch from the second uplink transmission waveform to the first uplink transmission waveform.

[0095] In this embodiment, if the waveform switching indication flag is configured, the CP-OFDM waveform is used, otherwise if the waveform switching indication flag is not configured, the DFT-s-OFDM waveform is used. The channel environment for CP-OFDM is better than the channel environment for DFT-s-OFDM and is relatively stable. Using this indication method is equivalent to using a suitable threshold within a certain range according to the current network environment and the MCS level used to achieve automatic waveform switching, and the information in this field can simultaneously carry the functions of MCS indication and waveform switching indication.

[0096] In one embodiment, the second group of fields is used to indicate the character position in the specified field as a waveform switching indication identifier, including: if the waveform switching indication identifier is configured, it indicates that the terminal performs uplink transmission waveform switching; if the waveform switching indication identifier is not configured, it indicates that the terminal does not perform uplink transmission waveform switching.

[0097] In this embodiment, if the waveform switching indication mark is configured, the waveform switching occurs. Otherwise, if the waveform switching indication mark is not configured, the existing waveform is maintained. In the previous embodiment, the MCS value actually selected by the PUSCH is the digital value after the bit. For example, when xxx=011, that is, n=3, the third bit of the MCS is used as the indication mark, and the value of the last two bits of the MCS is used as the current MCS value. Therefore, in this indication mode, the value of n should fully consider the current commonly used MCS and try to avoid interference with its value.

[0098] In one embodiment, the format of the DCI used to configure the waveform switching indication is a DCI format for scheduling an uplink physical shared channel PUSCH.

[0099] Among them, the DCI format for scheduling the uplink physical shared channel PUSCH includes at least one of DCI Format0_0, DCIFormat0_1 and DCI Format0_2. DCI Format0_0 is used for scheduling PUSCH in the cell. The following information is CRC-scrambled through C-RNTI (UE unique identifier, used for RRC connection and scheduling) or CS-RNTI (UE unique identifier, used for semi-persistent scheduling of downlink or uplink authorization configuration) or MCS-C-RNTI (UE unique identifier, used to indicate MCS table options for PDSCH and PUSCH channels), and then transmitted in DCI Format0_0. DCI Format 0_1 ​​is used for scheduling one or more PUSCHs in the serving cell. The following information is CRC-scrambled through C-RNTI or CS-RNTI or SP-CSI-RNTI (unique UE identifier, used to identify semi-persistent CSI reports on PUSCH) or MCS-C-RNTI, and then sent through DCIFormat0_1. DCI Format 0_2 is also PUSCH scheduling. The following information is CRC-scrambled through C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI and then transmitted through the DCI.

[0100] Specifically, since specific values ​​of some fields in DCI Format0_0, DCI Format0_1 and DCIFormat0_2 in the NR standard (TS 38.212) are still reserved but not clearly defined, either defined values ​​or undefined field values ​​can be used as indication flags to generate waveform switching indications. When the DCE carrying the waveform switching indication is transmitted to the terminal and the terminal supporting dynamic waveform switching detects the corresponding field value of the waveform switching indication, the waveform switching is performed in the next time slot. The waveform refers to one of the two waveforms, DFT-s-OFDM or CP-OFDM. Furthermore, those skilled in the art can understand that other scheduling configurations sent to the terminal are also configured for the transformed waveform.

[0101] In addition, when the waveform switching indication is made for the first time, although it is subject to the length of the corresponding DCI field and the number of reserved values, the scheduling information carried by the DCI used for dynamic switching indication should be as consistent as possible with the current communication needs. If it is significantly different from the current communication needs, it needs to be readjusted in the next DCI scheduling cycle. In order to shorten the scheduling cycle as soon as possible, the network side can also arrange the next scheduling as soon as possible.

[0102] In one embodiment, the function field includes a field in the DCI indicating the modulation and coding strategy MCS.

[0103] Among them, MCS (Modulation and Coding Scheme) defines the number of effective bits that a RE (Resource Element) can carry, and there are a total of 0 to 31 MCS schemes. The selection of which MCS depends on the quality of the wireless link. The higher the quality, the higher the MCS, and the more useful bits can be transmitted in one symbol. If the signal quality is poor, only a low-index MCS can be selected, which means that fewer useful data tables can be transmitted in one symbol. Specifically, the base station can select the MCR based on the block error rate (BLER).

[0104] Exemplarily, in DCI format 0_0 / 0_1 / 0_2, the field used to indicate MCS has 5 bits in total, and the corresponding value indicates the MCS level used by PUSCH.

[0105] Furthermore, when 'xxx'=n in dyn_wave_switch_ind='10xxx', the nth bit of the MCS field is used as the waveform switching indication flag.

[0106] Furthermore, xxx=[0, 7], so a digital selection of up to 7 (8) bits can be indicated. 1) In DCI format 0_0 / 0_1 / 0_2, the field used to indicate MCS has a total of 5 bits, and the corresponding value indicates the MCS level used by PUSCH.

[0107] In addition, since the waveform energy of the second uplink transmission waveform DFT-s-OFDM is more concentrated than that of the first uplink transmission waveform CP-OFDM, it can operate under conditions with a lower signal-to-noise ratio and better coverage performance, and is mostly used in environments with poor channel conditions. Therefore, when a poor channel condition is detected, it is necessary to promptly switch from CP-OFDM to DFT-s-OFDM to meet the user's minimum communication requirements. Therefore, the initial waveform switching operation disclosed in the present invention is also to switch from CP-OFDM to DFT-s-OFDM. At this time, the MCS level selected by the user should also be at a lower level to ensure basic communication quality, so MCS levels 0-3 can usually meet current communication requirements.

[0108] In one embodiment, after sending a DCI carrying a waveform switching indication to the terminal, it also includes: configuring an MCS index value greater than or equal to an index threshold as a switchback indication, wherein the switchback indication is used to indicate switching from the second uplink transmission waveform to the first uplink transmission waveform.

[0109] In this embodiment, when it is detected that the channel state is better, the terminal wishes to switch back to the first uplink transmission waveform CP-OFDM, and the corresponding MCS level in the waveform switching indication should also be higher. Therefore, an index threshold can be set for the MCS level, so that after the uplink transmission waveform switching occurs, based on the indicated MCS value in the DCI that is higher than the index threshold, the terminal can reliably switch back to the first uplink transmission waveform CP-OFDM.

[0110] In one embodiment, it also includes: detecting that the level of the MCS configured by the second set of reserved values ​​initially selected does not meet the communication requirements, reselecting the second set of reserved values ​​to adjust the index value of the MCS, and resending the adjusted DCI.

[0111] In this embodiment, in order to ensure the communication quality, it is necessary to configure a matching MCS level to ensure that the bit error rate BLER does not exceed a threshold under different wireless conditions.

[0112] In one embodiment, the function field includes a Transmit Precoding Matrix Indicator (TPMI) field in the DCI.

[0113] Among them, the precoding matrix indication (Pre-coding Matrix Indicator, PMI) means that only in a certain transmission mode of closed-loop spatial multiplexing, the terminal (UE) tells the base station (eNode B) what kind of precoding matrix should be used to precode the PDSCH channel of the UE. By specifying the transmitted precoding matrix indication (Transmitted Precoding Matrix Indicator, TPMI) for the uplink transmission of the terminal, the terminal uses the specified precoding matrix to precode the transmitted data and send it to the base station.

[0114] In this embodiment, TPMI may also be selected to configure the waveform switching indication, and the TPMI field in the DCI is used as the indication field, and a certain bit in the TPMI field is still selected as the waveform switching indication.

[0115] In one embodiment, the function field includes an antenna ports field in the DCI.

[0116] Exemplarily, RRC signaling is used as high-layer information, and a 6-bit field is added to the RRC signaling as a switching indication field, wherein the 6-bit field includes a first group of fields and a second group of fields, and the first group of fields includes 3 bits of data, which are used to indicate that a specified field in the antenna ports field is used to configure a waveform switching indication.

[0117] In this embodiment, by adopting the port configuration field in the DCI as the waveform switching indication field, one of the MCS, TPMI and antenna ports fields is selected based on the first group of field indications in the binary field. Compared with the indication method of using 2 bits to indicate the function field in dyn_wave_switch_ind='10xxx' and dyn_wave_switch_ind='11xxx', the flexibility of the optional function field is improved by increasing the length of the new field in the RRC signaling to 6 bits.

[0118] like Figure 4 As shown, according to another embodiment of the present disclosure, a method for indicating switching of a transmission waveform is applied to a terminal, and includes:

[0119] Step S402: extracting a handover indication field in the received high-layer signaling.

[0120] Step S404: if it is detected that the switching indication field indicates on, the switching function of the uplink transmission waveform is turned on.

[0121] Step S406: receiving downlink control information DCI.

[0122] Step S408: When it is detected that the DCI carries a waveform switching indication, the uplink transmission waveform is switched in the next time slot based on the waveform switching indication.

[0123] In this embodiment, a terminal with the capability of dynamically switching uplink transmission waveforms determines whether to enable the switching function of the uplink transmission waveform based on the switching indication field in the high-level signaling sent by the base station, and after enabling the switching function, further performs an uplink channel waveform switching indication based on the designated field in the received uplink scheduling DCI. While indicating the dynamic switching of the waveform, it indicates the conventional scheduling and configuration of the uplink channel. By indicating whether the dynamic switching of the waveform can be enabled and the dynamic switching indication selection information in the high-level signaling, the waveform is indicated and dynamically switched according to the corresponding bit of the designated field of the uplink scheduling DCI. This switching method can ensure that the terminal's decoding of the DCI will not be affected while completing the waveform switching indication.

[0124] Furthermore, by configuring the switching indication field, it is also helpful to ensure that the performance of terminal devices that do not support waveform switching is not affected by signaling.

[0125] In one embodiment, when it is detected that the DCI carries a waveform switching indication, the uplink transmission waveform is switched in the next time slot based on the waveform switching indication, including: determining a switching threshold based on a second value; when it is detected that the relationship between the value of a specified field in the DCI and the switching threshold satisfies the switching relationship, determining to carry the waveform switching indication to switch the uplink transmission waveform in the next time slot.

[0126] like Figure 5 As shown, in one embodiment, in step S404, if it is detected that the switching indication field indicates that it is turned on, a specific implementation method of turning on the switching function of the uplink transmission waveform includes:

[0127] Step S502: extract the newly added fields in the high-layer signaling.

[0128] Step S504: If it is detected that the value of the newly added field is the first value, the uplink transmission waveform switching function is not enabled.

[0129] Step S506: If it is detected that the value of the newly added field is the second value, the uplink transmission waveform switching function is enabled.

[0130] In one embodiment, in step S408, when it is detected that the DCI carries a waveform switching indication, a specific implementation method of switching the uplink transmission waveform in the next time slot based on the waveform switching indication includes:

[0131] Step S508: In response to the received DCI, determine a function field for configuring a waveform switching indication based on the first group of fields in the second value.

[0132] In one embodiment, determining the function field for configuring the waveform switching indication based on the first group of fields in the second value includes:

[0133] Based on the first group of fields in the second value, determine the modulation and coding strategy MCS field, the transmission precoding matrix indication TPMI field or the antenna ports field of the configuration waveform switching indication.

[0134] Step S510: determine the waveform switching indication identifier in the specified field based on the second group of fields in the second value, and determine to carry the waveform switching indication to switch the uplink transmission waveform in the next time slot.

[0135] To determine whether to carry the waveform switching indication, it is necessary to configure the waveform switching indication flag in the specified field.

[0136] In one embodiment, switching the uplink transmission waveform includes: if the terminal transmits based on the first uplink transmission waveform, switching from the first uplink transmission waveform to a second uplink transmission waveform based on a waveform switching indication.

[0137] In one embodiment, switching the uplink transmission waveform includes: switching from a current uplink transmission waveform to another uplink transmission waveform based on a waveform switching indication.

[0138] like Figure 6 As shown, Figure 6As shown, taking the waveform switching indication configuration based on the specified field in the MCS as an example, a switching indication method for a transmission waveform according to another embodiment of the present disclosure includes:

[0139] Step S602: currently using the CP-OFDM waveform, detecting that the channel state is not good, the base station configures a switching indication field in the high-layer signaling sent to the terminal.

[0140] In step S604, the terminal detects whether the switching indication field in the high-layer signaling is used to enable the waveform switching indication. If yes, the terminal proceeds to step S606; if no, the terminal proceeds to step S612.

[0141] Step S606: The base station sends a DCI carrying a waveform switching indication to the terminal.

[0142] Step S608: The terminal detects the function field for indicating waveform switching in the DCI and the location of the identifier in the function field based on the switching indication field.

[0143] Step S610: Perform waveform switching based on the detection result and switch to the DFT-s-OFDM waveform.

[0144] Step S612, not turning on the waveform switching indication.

[0145] It should be noted that the above figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0146] Refer to the following Figure 7 The transmission waveform switching indication device 700 according to the embodiment of the present invention is described. Figure 7 The switching indication device 700 of the transmission waveform shown is only an example and should not bring any limitation to the function and scope of use of the embodiment of the present invention.

[0147] The switching indication device 700 of the transmission waveform is presented in the form of a hardware module. The components of the switching indication device 700 of the transmission waveform may include but are not limited to: a first configuration module 702, which is used to configure the switching indication field in the high-layer signaling sent to the terminal, and the switching indication field is used to indicate whether the terminal turns on or off the uplink transmission waveform switching function; a second configuration module 704, which is used to configure the specified field in the downlink control information DCI as a waveform switching indication if the indication field indicates that the terminal turns on the uplink transmission waveform switching function, and the waveform switching indication is used to instruct the terminal to switch the uplink transmission waveform; a sending module 706, which is used to send a DCI carrying the waveform switching indication to the terminal.

[0148] Refer to the following Figure 8 The switching indication device 800 of the transmission waveform according to the embodiment of the present invention is described. Figure 8 The switching indication device 800 of the transmission waveform shown is only an example and should not bring any limitation to the function and scope of use of the embodiment of the present invention.

[0149] The switching indication device 800 of the transmission waveform is presented in the form of a hardware module. The components of the switching indication device 800 of the transmission waveform may include but are not limited to: an extraction module 802, used to extract the switching indication field in the received high-level signaling; an activation module 804, used to activate the switching function of the uplink transmission waveform when detecting that the switching indication field indicates activation; a receiving module 806, used to receive downlink control information DCI; a switching module 808, used to switch the uplink transmission waveform in the next time slot based on the waveform switching indication when detecting that the DCI carries a waveform switching indication.

[0150] It will be appreciated by those skilled in the art that various aspects of the present invention may be implemented as a system, method or program product. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as a "circuit", "module" or "system".

[0151] Refer to the following Fig. 9 The electronic device 900 according to this embodiment of the present invention is described below. It can be a network device or a terminal. Fig. 9 The electronic device 900 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0152] like Fig. 9 As shown, the electronic device 900 is in the form of a general computing device. The components of the electronic device 900 may include but are not limited to: at least one processing unit 910, at least one storage unit 920, and a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910).

[0153] The storage unit stores program codes, which can be executed by the processing unit 910, so that the processing unit 910 performs the steps according to various exemplary embodiments of the present invention described in the above “Exemplary Method” section of this specification. For example, the processing unit 910 can perform the following steps: Figure 2 The scheme described in steps S202 to S204 shown in FIG.

[0154] The storage unit 920 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 9201 and / or a cache storage unit 9202 , and may further include a read-only storage unit (ROM) 9203 .

[0155] The storage unit 920 may also include a program / utility 9204 having a set (at least one) of program modules 9205, such program modules 9205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0156] Bus 930 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0157] The electronic device 900 may also communicate with one or more external devices 970 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 900, and / or communicate with any device that enables the electronic device 900 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 950. Furthermore, the electronic device 900 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 960. As shown, the network adapter 960 communicates with other modules of the electronic device 900 via a bus 930. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0158] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0159] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention may also be implemented in the form of a program product, which includes a program code, and when the program product is run on an electronic device, the program code is used to enable the electronic device to perform the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0160] The program product for implementing the above method according to an embodiment of the present invention may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on an electronic device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.

[0161] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0162] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0163] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0164] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0165] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0166] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0167] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0168] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A method for indicating switching of a transmission waveform, characterized in that: Applied to base stations, including: Configuring a switching indication field in a high-layer signaling sent to a terminal, wherein the switching indication field is used to instruct the terminal to enable or disable an uplink transmission waveform switching function; If the indication field indicates that the terminal turns on the uplink transmission waveform switching function, a specified field in the downlink control information DCI is configured as a waveform switching indication based on the switching indication field, and the waveform switching indication is used to instruct the terminal to switch the uplink transmission waveform; The DCI carrying the waveform switching indication is sent to the terminal.

2. The method for indicating the switching of a transmission waveform according to claim 1, characterized in that: The configuring the handover indication field in the high-layer signaling sent to the terminal includes: configuring a newly added field having a first value in the high-layer signaling as the switching indication field, wherein the first value is used to indicate that the uplink transmission waveform switching function is not enabled; or A newly added field with a second value is configured in the high-layer signaling as the switching indication field, and the second value is used to indicate that the uplink transmission waveform switching function is enabled.

3. The switching indication method of the transmission waveform according to claim 2, characterized in that: The format of the DCI used to configure the waveform switching indication is a DCI format for scheduling an uplink physical shared channel PUSCH.

4. The switching indication method of the transmission waveform according to claim 3, characterized in that: The configuring a designated field in the downlink control information DCI as a waveform switching indication based on the switching indication field includes: The second value is also used to indicate a switching threshold, so as to generate the waveform switching indication when the relationship between the value of the designated field and the switching threshold satisfies a switching relationship.

5. The method for indicating the switching of a transmission waveform according to claim 3, characterized in that: The configuring a designated field in the downlink control information DCI as a waveform switching indication based on the switching indication field includes: The second value is a binary field of a specified number of bits, and the binary field includes a first group of fields and a second group of fields. The first group of fields is used to configure the functional field to which the specified field in the DCI belongs, and the second group of fields is used to indicate the character position in the specified field as a waveform switching indication identifier to obtain the waveform switching indication.

6. The method for indicating the switching of a transmission waveform according to claim 5, characterized in that: The second group of fields is used to indicate the character position in the specified field as a waveform switching indication mark, including: If the waveform switching indication mark is not configured, instructing the terminal to switch from the first uplink transmission waveform to the second uplink transmission waveform; If the waveform switching indication flag is configured, the terminal is instructed to switch from the second uplink transmission waveform to the first uplink transmission waveform.

7. The method for indicating the switching of a transmission waveform according to claim 5, characterized in that: The second group of fields is used to indicate the character position in the specified field as a waveform switching indication mark, including: If the waveform switching indication flag is configured, the terminal is instructed to perform uplink transmission waveform switching; If the waveform switching indication flag is not configured, the terminal is instructed not to perform uplink transmission waveform switching.

8. The method for indicating the switching of a transmission waveform according to claim 5, characterized in that: The function field includes a field indicating a modulation and coding strategy MCS in the DCI.

9. The method for indicating the switching of a transmission waveform according to claim 5, characterized in that: The function field includes a transmission precoding matrix indication TPMI field in the DCI.

10. The method for indicating the switching of a transmission waveform according to claim 5, characterized in that: The function field includes the antenna ports field in the DCI.

11. The method for indicating the switching of a transmission waveform according to any one of claims 1 to 10, characterized in that: The high-level signaling is radio resource control RRC signaling.

12. The method for indicating the switching of a transmission waveform according to claim 6, characterized in that: The first uplink transmission waveform is CP-OFDM, and the second uplink transmission waveform is DFT-S-OFDM.

13. A method for indicating switching of a transmission waveform, characterized in that: Applied to terminals, including: Extracting a handover indication field in the received high-layer signaling; When it is detected that the switching indication field indicates that the switching indication field is turned on, the switching function of the uplink transmission waveform is turned on; Receiving downlink control information DCI; When it is detected that the DCI carries a waveform switching indication, the uplink transmission waveform is switched in the next time slot based on the waveform switching indication.

14. The method for indicating the switching of a transmission waveform according to claim 13, characterized in that: The detecting that the switching indication field indicates turning on, then turning on the switching function of the uplink transmission waveform includes: Extracting a newly added field in the high-layer signaling; If it is detected that the value of the newly added field is the second value, the switching function of the uplink transmission waveform is enabled.

15. The method for indicating the switching of a transmission waveform according to claim 14, characterized in that: Also includes: If it is detected that the value of the newly added field is the first value, the switching function of the uplink transmission waveform is not enabled.

16. The method for indicating the switching of a transmission waveform according to claim 14, characterized in that: When detecting that the DCI carries a waveform switching indication, switching the uplink transmission waveform in the next time slot based on the waveform switching indication includes: Determine a switching threshold based on the second value; When it is detected that the relationship between the value of the designated field in the DCI and the switching threshold satisfies the switching relationship, it is determined to carry the waveform switching indication to switch the uplink transmission waveform in the next time slot.

17. The method for indicating the switching of a transmission waveform according to claim 14, characterized in that: When detecting that the DCI carries a waveform switching indication, switching the uplink transmission waveform in the next time slot based on the waveform switching indication includes: In response to the received DCI, the functional field for configuring the waveform switching indication is determined based on the first group of fields in the second value, and the waveform switching indication identifier in the specified field is determined based on the second group of fields in the second value. When it is determined that the waveform switching indication is carried, the uplink transmission waveform is switched in the next time slot.

18. The method for indicating the switching of a transmission waveform according to claim 17, characterized in that: The switching of the uplink transmission waveform comprises: If the terminal transmits based on the first uplink transmission waveform, the first uplink transmission waveform is switched to the second uplink transmission waveform based on the waveform switching indication mark.

19. The method for indicating the switching of a transmission waveform according to claim 17, characterized in that: The switching of the uplink transmission waveform comprises: The current uplink transmission waveform is switched to another uplink transmission waveform based on the waveform switching indication mark.

20. The method for indicating the switching of a transmission waveform according to any one of claims 17 to 19, characterized in that: The determining, based on the first group of fields in the second value, the function field for configuring the waveform switching indication comprises: Based on the first group of fields in the second value, determine the field indicating the modulation and coding strategy MCS, the transmission precoding matrix indication TPMI field or the antenna ports field for configuring the waveform switching indication.

21. A switching indication device for a transmission waveform, characterized in that: include: A first configuration module, configured to configure a switching indication field in a high-layer signaling sent to a terminal, wherein the switching indication field is used to instruct the terminal to enable or disable an uplink transmission waveform switching function; A second configuration module is configured to configure a specified field in the downlink control information DCI as a waveform switching indication if the indication field indicates that the terminal turns on the uplink transmission waveform switching function, wherein the waveform switching indication is used to instruct the terminal to switch the uplink transmission waveform; A sending module is used to send the DCI carrying the waveform switching indication to the terminal.

22. A switching indication device for a transmission waveform, characterized in that: Applied to terminals, including: An extraction module, used for extracting a handover indication field in a received high-level signaling; An enabling module, configured to enable a switching function of an uplink transmission waveform when detecting that the switching indication field indicates enabling; A receiving module, used for receiving downlink control information DCI; The switching module is configured to switch the uplink transmission waveform in the next time slot based on the waveform switching indication when detecting that the DCI carries the waveform switching indication.

23. A network device, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; The processor is configured to execute the transmission waveform switching indication method according to any one of claims 1 to 12 by executing the executable instructions.

24. A terminal, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; The processor is configured to execute the transmission waveform switching indication method according to any one of claims 13 to 20 by executing the executable instructions.

25. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for indicating switching of a transmission waveform according to any one of claims 1 to 20 is implemented.

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