Waveform determining method and apparatus, communication device, and storage medium

Abstract

The present application relates to the technical field of communications, and discloses a waveform determining method and apparatus, a communication device, and a storage medium. The waveform determining method in embodiments of the present application comprises: a terminal sends a target message to a network side device, wherein the target message is used for at least one of the following: indicating waveform related capability information supported by the terminal, and requesting to use a target waveform for communication with the terminal.

Description

Waveform determination method, device, communication equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311540700.5 filed on November 17, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a waveform determination method, apparatus, communication equipment, and storage medium. Background Art

[0004] In current communication systems, uplink supports both cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveforms, while downlink only supports CP-OFDM. Future mobile communication systems will require even more diverse waveforms due to a wider range of terminals, more scenarios, and higher carrier frequencies.

[0005] For terminals of various capabilities, different waveforms can be used to meet the requirements of capacity, coverage or low power consumption. For high-speed scenarios, new waveforms can be used to overcome the strong time-frequency interference caused by high mobile speeds. For high-frequency / ultra-high-frequency bands, due to the low efficiency of power amplifiers, it is crucial to design a transmission signal with a low peak-to-average power ratio. In addition, for the broadcast channel before the Radio Resource Control (RRC) connection state, due to the wide beam, the coverage of some channels may be a problem. It is very important to design a synchronization channel that can provide large coverage.

[0006] Therefore, future communication systems will need to support different waveform transmissions, both in RRC connected and disconnected states. The physical layer processing for sending and receiving different waveforms differs. If a base station transmits using a waveform that a terminal doesn't support, the terminal may not be able to receive the signal correctly.

[0007] Summary of the Invention

[0008] The embodiments of the present application provide a waveform determination method, apparatus, communication device, and storage medium, which can solve the problem that a base station uses a waveform that is not supported by a terminal to send, resulting in the terminal being unable to correctly receive the signal.

[0009] In a first aspect, a waveform determination method is provided, which includes: a terminal sending a target message to a network side device, where the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting to use a target waveform to communicate with the terminal.

[0010] In a second aspect, a waveform determination method is provided, which includes: a network side device receiving a target message from a terminal, where the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting to use a target waveform to communicate with the terminal.

[0011] In a third aspect, a waveform determination apparatus is provided, comprising: a sending module configured to send a target message to a network-side device, the target message being used for at least one of the following: indicating waveform-related capability information supported by a terminal; and requesting communication with the terminal using a target waveform.

[0012] In a fourth aspect, a waveform determination apparatus is provided, comprising: a receiving module configured to receive a target message from a terminal, the target message being used to at least one of: indicate waveform-related capability information supported by the terminal; and request communication with the terminal using a target waveform.

[0013] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0014] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a target message to a network side device, and the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting the use of a target waveform to communicate with the terminal.

[0015] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0016] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a target message from a terminal, and the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; requesting to use the target waveform to communicate with the terminal.

[0017] In the ninth 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 second aspect are implemented.

[0018] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0019] In the eleventh aspect, a chip is provided, 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 method as described in the first aspect, or to implement the method as described in the second aspect.

[0020] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the waveform determination method as described in the first aspect, or to implement the steps of the waveform determination method as described in the second aspect.

[0021] In an embodiment of the present application, a terminal may send a target message to a network-side device, and the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting the use of a target waveform to communicate with the terminal. In this solution, the terminal may indicate waveform-related capability information supported by the terminal to the network-side device, that is, the terminal may inform the network-side device of the waveforms supported by the terminal through capability reporting, and thus use the waveform supported by the terminal for signal transmission; or, the terminal may directly request the network-side device to communicate with the terminal using the target waveform, that is, the terminal and the network-side device negotiate to use the target waveform for signal transmission; in this way, the terminal can correctly receive the signal sent by the network-side device, thereby improving the signal transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0023] FIG2 is a flow chart of a waveform determination method according to an embodiment of the present application;

[0024] FIG3 is a second flowchart of a waveform determination method provided in an embodiment of the present application;

[0025] FIG4 is a third flowchart of a waveform determination method provided in an embodiment of the present application;

[0026] FIG5 is a schematic diagram of a structure of a waveform determination device according to an embodiment of the present application;

[0027] FIG6 is a second structural diagram of a waveform determination device provided in an embodiment of the present application;

[0028] FIG7 is a third structural diagram of a waveform determination device provided in an embodiment of the present application;

[0029] FIG8 is a fourth structural diagram of a waveform determination device provided in an embodiment of the present application;

[0030] FIG9 is a fifth structural diagram of a waveform determination device provided in an embodiment of the present application;

[0031] FIG10 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0032] FIG11 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application;

[0033] FIG12 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] 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.

[0035] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and 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, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0036] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0037] The terms "at least one" and "at least one of" in this application refer to any one, any two, or a combination of more than two of the objects included. For example, at least one of a, b, and c can be represented by: "a", "b", "c", "a and b", "a and c", "b and c", and "a, b, and c", where a, b, and c can be single or multiple. Similarly, "at least two" means two or more, and its meaning is similar to "at least one".

[0038] 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) or 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 systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0039] FIG1 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 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, 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 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0040] The following explains some concepts and / or terms involved in the waveform determination method, apparatus, communication equipment, and storage medium provided in the embodiments of the present application.

[0041] 1. Waveform indication mode

[0042] In communication technology, the transmission waveforms of the normal PUSCH and the PUSCH used for Msg3 transmission are configured respectively through the transform precoder in the uplink physical uplink shared channel (PUSCH)-configuration (config) and the Msg3-transformPrecoding in the random access channel (RACH)-common configuration (ConfigCommon). Both waveforms are updated only during RRC reconfiguration.

[0043] 2. System Information (SI) and System Information Block 1 (SIB1)

[0044] In 5G NR, system information can be divided into three categories: Minimum System Information (MSI), Remaining Minimum System Information (RMSI), and Other System Information (OSI). These three categories can be further divided into a Master Information Block (MIB) and nine System Information Blocks (SIBs). MIB information is sent via the Broadcast Channel (BCH) and the Physical Broadcast Channel (PBCH), while SIBs are sent via the Downlink-Shared Channel (DL-SCH) and the Physical Downlink Shared Channel (PDSCH). RMSI includes SIB1, and Other System Information (OSI) includes SIB2 to SIB9. MIB and SIB1 each have their own RRC messages.

[0045] SIB1 contains the necessary information for the terminal to reside in the cell (for example: cell selection information, Public Land Mobile Network (PLMN), Tracking Area Code (TAC), cell logo, RAN notification information, SI scheduling information for OSI, and service cell information). SIB1 is sent through DL-SCH and PDSCH channels. Its change period is 160ms, and it can be repeatedly sent within 160ms, and the repetition period is variable. The default repetition period of SIB1 is 20ms, but the actual repetition time depends on the network implementation. For Synchronization Signal Block (SSB) and Control Resource Set (CORESET) multiplexing mode 1, the repetition period of SIB1 is 20ms; for SSB and CORESET multiplexing modes 2 / 3, the SIB1 repetition period is the same as the SSB period.

[0046] 3. CORESET and Search Space (SS)

[0047] A CORESET is a collection of time-domain and frequency-domain resources for control information. CORESET#0 is a special CORESET typically used to schedule the transmission of the Physical Downlink Control Channel (PDCCH) for SIB1. The configuration information for CORESET#0 and the monitoring timing for the Type0-PDCCH Common Search Space (CSS) are carried by the associated Cell-Defining (CD) SSB (i.e., CD-SSB). The main function of CORESET#0 is to define the time and frequency resources for the Type0-PDCCH CSS and the size of the monitoring timing for the Type0-PDCCH CSS.

[0048] There are two types of SS sets: one is a common search space set monitored by a group of terminals in a cell, and the other is a user-specific search space set monitored by a single terminal. The SS set further configures the PDCCH candidates that the terminal needs to monitor. There are the following types of search spaces in NR:

[0049] Type0-PDCCH common search space set (CSS set): This search space set is used to monitor SIB1 system messages.

[0050] Type0A-PDCCH CSS set: This search space set is used to monitor system messages other than SIB1.

[0051] Type1-PDCCH CSS set: This search space set is used to monitor: the downlink PDCCH corresponding to Msg2 / 4 in the traditional 4-step random access process; the downlink PDCCH corresponding to Msg-B in the 2-step random access process newly added in R16.

[0052] Type2-PDCCH CSS set: This search space set is used to monitor paging messages.

[0053] Type3-PDCCH CSS set: This search space set is used to monitor uplink power control (pre-emption) PDCCH, downlink power control PDCCH, slot format indication (slot format indication) PDCCH, and PDCCH related to downlink data transmission.

[0054] Terminal-specific search space: This search space set is used to monitor PDCCH related to downlink data transmission.

[0055] Control Resource Set (CORESET) and Search Space (SS) are two concepts that are very easy to confuse. CORESET solves the problem of the existence range of PDCCH, such as frequency domain and time domain resources. However, from the RRC signaling, it can be seen that the configuration of CORESET does not indicate the specific time domain position of the terminal to detect (monitor) PDCCH (but only gives the time domain resources, that is, in the time domain, the duration (number of symbols) of CORESET), and the specific time domain position of the terminal to detect PDCCH is given by the monitoring opportunity given by SS. Such a design can achieve greater flexibility. CORESET can be configured in any frequency domain position (the configuration parameter FrequencyDomainResources IE is the bitmap of the physical resource block (Physical Resource Block, PRB) number of the current bandwidth part (Bandwidth Part, BWP)). SS solves the problem of how the terminal searches.

[0056] 4. PDCCH type

[0057] The PDCCH is the only downlink control channel in NR. The data carried by the PDCCH is downlink control information (DCI). DCI primarily includes PDSCH or PUSCH transmission resource scheduling information, as well as uplink power control (PUSCH, Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS)) indications, slot format, and which PRBs and OFDM symbols are not mapped to data by the terminal. After a series of scrambling, modulation, and coding processes, the DCI is mapped to physical resources in units of Control Channel Elements (CCEs). There are three main types of PDCCH: common PDCCH, group common PDCCH, and UE-specific PDCCH.

[0058] 5. Random access process

[0059] The random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure may be a four-step random access procedure (also called a Type-1 random access procedure) or a two-step random access procedure (also called a Type-2 random access procedure).

[0060] In the contention-based 4-step random access (RACH) process, the terminal first sends Msg1, which contains a preamble, to the network. After the network detects the preamble, it sends Msg2 / Random Access Reception (RAR) message, which contains the preamble number detected by the network and the uplink radio resources allocated to the terminal for sending Msg3. After receiving Msg2, the terminal confirms that at least one of the preamble numbers carried in Msg2 matches the number of the preamble it sent. Then, based on the resources indicated by the RAR, it sends Msg3 containing contention resolution information. After receiving Msg3, the network sends Msg4 containing contention resolution information. Upon receiving Msg4, the terminal confirms that the resolution information is consistent with the contention resolution information sent in Msg3, thus completing the 4-step random access.

[0061] The network includes uplink grant (UL grant) information in the RAR to indicate Msg3 PUSCH scheduling information, and also includes information such as Random Access Channel Preamble ID (RAPID), Temporary Cell-Radio Network Temporary Identifier (TC-RNTI), and Timing Advance (TA). If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the PDCCH scrambled by the TC-RNTI.

[0062] For the contention-based random access process, different terminals randomly select preambles for transmission. In this way, different terminals may select the same preamble to send on the same time-frequency radio resources (Random Access Channel Occasion (RO) resources). This situation can be understood as a terminal preamble conflict. In this case, different terminals will receive the same RAR. At this time, different terminals will transmit Msg3 PUSCH according to the scheduling information in the RAR UL grant. Because the communication technology does not support repeated transmission of Msg3 PUSCH, the network can only decode the PUSCH (including contention resolution information) sent by one terminal on one Msg3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the terminal matches the contention resolution information sent by the terminal in Msg3 PUSCH, the terminal considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0063] If the contention resolution is unsuccessful, the terminal reselects RACH transmission resources, performs physical random access channel (PRACH) transmission, and makes the next random access attempt.

[0064] In NR Rel-16, the two-step random access process 2-step RACH was introduced. The first step is that the terminal sends MsgA to the network side. After receiving MsgA, the network side sends MsgB to the terminal. If the terminal does not receive MsgB within a certain period of time, the terminal will increment the counter that counts the number of times MsgA is sent and resend MsgA. If the counter that counts the number of times MsgA is sent reaches a certain threshold, the terminal will switch from the 2-step random access process to the 4-step random access process. MsgA includes the MsgA preamble part and the MsgA PUSCH part. The preamble part is sent on the RO used for 2-step RACH, and the PUSCH part is sent on the MsgA PUSCH resources associated with the sending of the MsgA preamble and the RO. MsgA PUSCH resources are a set of PUSCH resources configured relative to each PRACH slot, including time-frequency resources and demodulation reference signal (DMRS) resources.

[0065] 6. DFT waveform generation method

[0066] DFT-s-OFDM is a single-carrier modulation that achieves a good balance between Peak to Average Power Ratio (PAPR), resource allocation flexibility, and detection complexity. NR uplink supports DFT-s-OFDM waveforms for scenarios with limited uplink coverage and only supports single-stream transmission.

[0067] If the length M of the DFT is equal to the length N of the Inverse Discrete Fourier Transform (IDFT), then when the two are cascaded, the effects of the DFT and IDFT cancel each other out, and the output signal is a normal single-carrier modulated signal. When N>M and zero input is used to pad the IDFT, the IDFT output signal has the following characteristics:

[0068] The PAPR of the signal is smaller than that of the OFDM signal;

[0069] By changing the mapping of the DFT output data to the IDFT input, the frequency domain position occupied by the output signal can be changed.

[0070] By changing the correspondence between the DFT output and the IDFT input, the spectrum of the input data symbol can be moved to different locations. Therefore, depending on the resource block mapping method, it can be divided into centralized DFT-s-OFDM and distributed DFT-sOFDM.

[0071] Centralized DFT-s-OFDM: After the precoded signal undergoes DFT, it is mapped into a set of contiguous resource blocks (RBs). This simplifies radio resource allocation when multiple terminals are present. However, since each user only receives a set of contiguous RBs, frequency selectivity and multi-user diversity cannot be effectively utilized.

[0072] Distributed DFT-s-OFDM: Maps the DFT output onto non-contiguous clusters of multiple RBs. While suppressing PAPR, this algorithm effectively exploits frequency selectivity and multi-user diversity, offering greater flexibility than localized algorithms. However, clustered DFT-s-OFDM suffers from increased out-of-band (OOB) emissions. Due to increased intermodulation distortion and signaling, radio resource allocation is significantly more complex than with localized DFT-s-OFDM when multiple users coexist.

[0073] The waveform determination method, apparatus, communication device, and storage medium provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0074] Future communication systems will need to support different waveform transmissions, both in RRC connected and disconnected states. The physical layer processing for sending and receiving different waveforms differs. If a base station transmits using a waveform that a terminal doesn't support, the terminal may not be able to receive the signal correctly.

[0075] An embodiment of the present application provides a waveform determination method, in which a terminal can send a target message to a network-side device, and the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting to use a target waveform to communicate with the terminal. In this solution, the terminal can indicate waveform-related capability information supported by the terminal to the network-side device, that is, the terminal can use capability reporting to enable the network-side device to learn the waveforms that the terminal can support, and thus use the waveform supported by the terminal for signal transmission; or, the terminal can directly request the network-side device to use the target waveform to communicate with the terminal, that is, the terminal and the network-side device negotiate to use the target waveform for signal transmission; in this way, the terminal can correctly receive the signal sent by the network-side device, thereby improving the signal transmission performance.

[0076] The present invention provides a waveform determination method, and Figure 2 shows a flowchart of the waveform determination method provided by the present invention. As shown in Figure 2, the waveform determination method provided by the present invention may include the following steps 201 and 202.

[0077] Step 201: The terminal sends a target message to a network-side device.

[0078] Step 202: The network-side device receives a target message from the terminal.

[0079] In an embodiment of the present application, the above-mentioned target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; requesting to use the target waveform to communicate with the terminal.

[0080] In an embodiment of the present application, the waveform-related capability information is used by the network-side device to determine a target waveform for communicating with the terminal; the target waveform is one of the waveforms supported by the terminal.

[0081] Optionally, in an embodiment of the present application, the above-mentioned target message includes at least one of the following: PRACH, Msg1, Msg3, Msg3 PUSCH, MsgA, MsgA PRACH, MsgA PUSCH, messages sent by the terminal in a connected state, uplink synchronization signals or channels, uplink messages, and other newly introduced uplink channels or signals.

[0082] It should be noted that the PRACH mentioned in the embodiments of the present application refers to the uplink synchronization channel, not only the PRACH defined in 5G, but also the uplink synchronization channel or random access channel in 6G or future evolved mobile communication systems. It may have other names in 6G.

[0083] Msg1, Msg2, Msg3, Msg4, MsgA, MsgB, etc. mentioned in the embodiments of the present application are not only Msg1, Msg2, Msg3, Msg4, MsgA, MsgB defined in 5G, but may also be uplink and downlink messages sent during the random access / initial access process in 6G or future evolved mobile communication systems. They may have other names in 6G.

[0084] It should be noted that the message sent by the terminal in the connected state may refer to a message sent by the terminal when entering the connected state, such as a UE-specific PUSCH. The uplink synchronization signal or channel may refer to an uplink synchronization signal or channel newly introduced in a 6G or future evolved mobile communication system, such as a PRACH similar to 5G. The uplink message may refer to an uplink message newly introduced in a 6G or future evolved mobile communication system, such as Msg1 and MsgA similar to 5G.

[0085] Optionally, in an embodiment of the present application, the above-mentioned other newly introduced uplink channels or signals may include at least one of the following: a newly introduced uplink wake-up signal (Wake Up Signal, WUS), a newly introduced uplink channel detection signal (such as SRS).

[0086] Optionally, in this embodiment of the present application, the waveform-related capability information includes at least one of the following:

[0087] First information, the first information including at least one of the following: the number of supported waveforms, the types of supported waveforms, and the identifiers or indexes of supported waveforms;

[0088] Information used to indicate support for waveform switching;

[0089] Information for indicating support for use of a target waveform on a first channel, where the first channel includes at least one of the following: an uplink channel, a downlink channel, a broadcast channel, a synchronization channel, a terminal-specific channel, a control channel, and a data channel;

[0090] Information indicating support for using a target waveform on the first frequency domain unit.

[0091] Optionally, in an embodiment of the present application, the above-mentioned target waveform is any one of the following: a multi-carrier waveform, a single-carrier waveform, an orthogonal time-frequency space modulation (OTFS) waveform, a low-power waveform, a linear waveform, a frequency modulation waveform, an amplitude modulation waveform, and a phase modulation waveform.

[0092] Optionally, in an embodiment of the present application, the above-mentioned multi-carrier waveform may include at least one of the following: CP-OFDM, filter bank based multicarrier (Filter Banks based Multicarrier, FBMC), generalized frequency division multiplexing (Generalized Frequency Division Multiplexing, GFDM), universal filter multicarrier (Universal filter-Multi-Carrier, UFMC), filter-based orthogonal frequency division multiplexing (filter-OFDM) multicarrier.

[0093] Optionally, in an embodiment of the present application, the above-mentioned single-carrier waveform may include at least one of the following: a DFT-s-OFDM waveform, a constant envelope waveform, and single-carrier frequency-domain equalization (SC-FDE).

[0094] Optionally, in an embodiment of the present application, the above-mentioned OTFS waveform is used for transmission at a high rate or with a large payload.

[0095] Optionally, in an embodiment of the present application, the low-power waveform may be an ultra-wideband (UWB) waveform.

[0096] Optionally, in the embodiment of the present application, the linear waveform may include at least one of the following: a chirp signal waveform, a frequency modulated continuous wave (FMCW), or a linear frequency modulation (LFM) waveform.

[0097] Optionally, in the embodiment of the present application, the uplink channel may include at least one of an uplink data channel and an uplink control channel. The downlink channel may include at least one of a downlink data channel and a downlink control channel.

[0098] Optionally, in an embodiment of the present application, the above-mentioned broadcast channel may include at least one of the following: SSB, PBCH, and public PDCCH (eg, SIB1 PDCCH).

[0099] Optionally, in an embodiment of the present application, the above-mentioned synchronization channel may include at least one of the following: SSB, PRACH, Msg1, Msg2, Msg3, Msg 4, MsgA, MsgB, SIB1.

[0100] Optionally, in an embodiment of the present application, the first frequency domain unit may include at least one of the following: a frequency band, a frequency range (FR), an RB, a resource element (RE), a subcarrier, etc.

[0101] Optionally, in an embodiment of the present application, the above-mentioned waveform-related capability information is predefined by default or by protocol, or preconfigured.

[0102] Optionally, in an embodiment of the present application, the above-mentioned target message carries second information to indicate waveform-related capability information or request to use the target waveform to communicate with the terminal. The second information corresponds to the waveform supported by the terminal, and the second information includes at least one of the following: the priority of the terminal, the type of the terminal, and the capability level of the terminal.

[0103] It is understood that the second information is used for at least one of the following: indicating waveform-related capability information supported by the terminal, and requesting the use of a target waveform for communication with the terminal. When the terminal sends a target message to the network device, the second information is included in the target message to implicitly report the terminal's waveform capability information or request the use of the target waveform for communication. The network device can then determine the target waveform based on the second information.

[0104] Optionally, in an embodiment of the present application, the priority of the above-mentioned terminal includes at least one of the following: priority defined on the network side, priority defined based on the mobile user identification code, priority indicated by the uplink channel (such as PRACH) or uplink message (such as Msg3).

[0105] Optionally, in an embodiment of the present application, the priority defined on the network side may be a priority defined on the core network or a priority defined on the RAN side.

[0106] Optionally, in an embodiment of the present application, the above-mentioned priority defined based on the mobile user identification code can be any one of the following: priority defined based on the International Mobile Subscriber Identification Number (IMSI), priority defined based on the Temporary Mobile Subscriber Identity (TMSI), and priority defined based on the Packet Temperate Mobile Subscription Identity (P-TMSI).

[0107] Exemplarily, as shown in Table 1, there is a corresponding relationship between different terminal priorities and supported waveforms.

[0108] Table 1

[0109] Optionally, in an embodiment of the present application, the type of the above-mentioned terminal is used to indicate that the terminal supports different transmission services or transmission scenarios, such as high-speed transmission scenarios, high-frequency / ultra-high-frequency band transmission scenarios, non-terrestrial network (NTN) transmission scenarios, etc.

[0110] Optionally, in an embodiment of the present application, the type of the above-mentioned terminal includes at least one of the following: enhanced mobile broadband (eMBB) terminal, reduced capability (RedCap) terminal, ultra-reliable and low latency communications (URLLC) terminal, machine type communication (MTC) terminal, Internet of Things (IoT) terminal, extended reality (XR) terminal, and NTN terminal.

[0111] Exemplarily, as shown in Table 2, there is a correspondence between different terminal types and supported waveforms.

[0112] Table 2

[0113] Optionally, in an embodiment of the present application, the terminal capability level is used to indicate communication characteristics supported by the terminal.

[0114] Optionally, in an embodiment of the present application, the capability level of the above-mentioned terminal includes at least one of the following: the ability to support all LTE and NR protocols, the ability to support only LTE protocols, the ability to support only NR protocols, the ability to support NR R15, NR R16 and NR R17 protocols, the ability to support NR R15 and NR R16 protocols, and the ability to support only NR R17 protocols.

[0115] For example, as shown in Table 3, the capability level of a terminal refers to the degree of support for different versions of protocols.

[0116] Table 3

[0117] As shown in Table 4, there is a corresponding relationship between the capability levels of different terminals and the waveforms they support. For example, the higher the protocol capability level, the more waveforms it can support.

[0118] Table 4

[0119] In the embodiment of the present application, the terminal may also explicitly indicate waveform-related capability information to the network device, or request to use the target waveform, for example, through the uplink synchronization channel, Msg3, MsgA, etc. in the following manner.

[0120] It should be noted that the indication or request described in the embodiment of the present application refers to at least one of the following: indicating waveform-related capability information supported by the terminal, and requesting to communicate with the terminal using a target waveform.

[0121] Optionally, in an embodiment of the present application, the above-mentioned target message includes an uplink synchronization channel (e.g., Msg1 PRACH or MsgA PRACH); the above-mentioned target message is indicated or requested through at least one of the following: a random access preamble code or a random access preamble code index of the uplink synchronization channel, an RO position or an RO index of the uplink synchronization channel.

[0122] It is understood that different preambles or preamble indexes correspond to supported waveforms, and different RO positions or RO indexes correspond to supported waveforms.

[0123] For example, preamble index = [0, 9] indicates support for CP-OFDM waveform; preamble index = [10, 19] indicates support for DFT-s-OFDM waveform; preamble index = [20, 29] indicates support for CP-OFDM waveform and DFT-s-OFDM waveform.

[0124] Optionally, in an embodiment of the present application, the above-mentioned target message includes Msg3; the above-mentioned target message is indicated or requested through at least one of the following: information bits or fields in Msg3 PUSCH, logical channel identifier (Logical Channel Identification, LCID) or enhanced logical channel identifier (Enhanced Logical Channel Identification, eLCID) carrying information of Msg3 PUSCH, uplink control message of Msg3, DMRS resources of Msg3PUSCH, scrambling sequence of Msg3 PUSCH, resources or information of Msg3 PUSCH.

[0125] In an embodiment of the present application, the target message can be directly carried by an information bit or field in the Msg3 PUSCH. The information bit or field can use an existing field or introduce a new field, such as using a spare bit in Msg3. Alternatively, different waveform capability related information or target waveform requests correspond to LCIDs (or eLCIDs), that is, different LCIDs or eLCIDs are used to distinguish different waveform capability related information or target waveform requests.

[0126] Optionally, in the embodiment of the present application, the manner of indicating or requesting through the resources or information of the Msg3 PUSCH includes at least one of the following:

[0127] Implicit indication or request of time-frequency domain resources via Msg3 PUSCH;

[0128] Implicitly indicated or requested through the content of Msg3 PUSCH;

[0129] Implicit indication or request of the payload size of the Msg3 PUSCH;

[0130] The type of PUSCH is implicitly indicated or requested through Msg3.

[0131] Exemplarily, for implicit indication or request through the content of Msg3 PUSCH, when the content of Msg3 PUSCH is RRCSetupRequest or RRCResumeRequest, it indicates different triggering events (ie, the reason for random access), and different waveforms may be used.

[0132] Exemplarily, for the implicit indication or request of the payload size through Msg3 PUSCH, different payload sizes of Msg3 PUSCH are related to the content of Msg3 PUSCH. Different contents of Msg3 PUSCH have different payload sizes, and different waveforms may be used.

[0133] Exemplarily, for the implicit indication or request through the Msg3 PUSCH type, different Msg3 PUSCH types are related to corresponding triggering events (ie, reasons for random access), and different triggering events (ie, reasons for random access) may use different waveforms.

[0134] Optionally, in an embodiment of the present application, the above-mentioned target message includes MsgA; the above-mentioned target message is indicated or requested by at least one of the following: information bits or fields of MsgA, LCID or eLCID of information carried by MsgA, resources or information of MsgA, information bits or fields of MsgA PUSCH, LCID or eLCID of information carried by MsgA PUSCH, resources or information of MsgA PUSCH.

[0135] It can be understood that in the 2-step RACH process, a target message can be sent through MsgA or MsgA PUSCH to indicate waveform capability related information or request a target waveform.

[0136] In an embodiment of the present application, the target message can be directly carried by an information bit or field in MsgA or MsgA PUSCH, and the information bit or field can use an existing field or introduce a new field. Alternatively, different waveform capability-related information or target waveform requests correspond to LCIDs (or eLCIDs), that is, different LCIDs or eLCIDs are used to distinguish different waveform capability-related information or target waveform requests.

[0137] Optionally, in the embodiment of the present application, the manner of indicating or requesting through the resources or information of MsgA or MsgA PUSCH includes at least one of the following:

[0138] Implicit indication or request of time-frequency domain resources through MsgA or MsgA PUSCH;

[0139] Implicitly indicated or requested by MsgA or the group to which the MsgA PUSCH belongs.

[0140] For example, for implicit indication or request of time-frequency domain resources via MsgA or MsgA PUSCH, multiple sets of MsgA resources can be independently configured for use by terminals that support multiple waveforms and terminals that do not support multiple waveforms. The network-side device can determine whether the terminal supports multiple waveforms based on the detected MsgA resources used by the terminal.

[0141] For example, for implicit indication or request via MsgA or the group to which the MsgA PUSCH belongs, two groups of PUSCH transmission opportunities (PUSCH Occasion, PO) are configured in the MsgA configuration of the 2-step RACH, namely PO group A and PO group B. PO group A is used by terminals that support multiple waveforms, and PO group B is used by terminals that do not support multiple waveforms. The network-side device can determine whether a terminal supports multiple waveforms based on detecting the PUSCH on the two PO groups.

[0142] Optionally, in an embodiment of the present application, the above step 201 can be specifically implemented through the following step 201a or step 201b.

[0143] Step 201a: The terminal sends a newly introduced uplink channel or signal to the network side device.

[0144] It can be understood that the above-mentioned target message is the newly introduced uplink channel or signal here, and the terminal performs at least one of the following through the newly introduced uplink channel or signal: indicating waveform-related capability information supported by the terminal, and requesting to use the target waveform to communicate with the terminal.

[0145] Step 201b: The terminal sends a target message to the network side device by using a specific resource, resource location or sending time.

[0146] Optionally, in an embodiment of the present application, the specific resource may include at least one of a specific time domain resource and a specific frequency domain resource. The specific resource location may include at least one of a specific time domain location and a specific frequency domain location.

[0147] Optionally, in the embodiment of the present application, the above step 201b can be specifically implemented through the following step 201b1.

[0148] Step 201b1: Under certain circumstances, the terminal sends a target message to the network side device by using a specific resource, resource location or sending time.

[0149] In the embodiment of the present application, the above-mentioned specific situation is the first situation or the second situation. The first situation includes at least one of the following: there is a requirement to reduce power consumption, power is limited, there is a problem with network coverage, and the terminal is detected to be moving at high speed.

[0150] The above-mentioned second situation includes at least one of the following: the currently used waveform or the default waveform cannot continue to be used, the currently used waveform or the default waveform conflicts with the transmission configuration of other waveforms, the currently used waveform or the default waveform cannot meet the performance requirements (such as high-speed, high-frequency / ultra-high-frequency band transmission requirements), and the currently used waveform or the default waveform does not meet the radio frequency indicators.

[0151] It should be noted that the above-mentioned other waveforms are waveforms other than the currently used waveform or the default waveform.

[0152] Optionally, in an embodiment of the present application, the above-mentioned transmission configuration may include at least one of the following: transmission resources of other waveforms, reference signal configurations corresponding to other waveforms (such as DMRS configurations), etc.

[0153] Exemplarily, a specific time-frequency domain resource is configured for the Msg2 PDSCH transmitted using the DFT-s-OFDM waveform (the default waveform is CP-OFDM). In the above specific case, the Msg2 PDSCH is sent on the configured specific time-frequency domain resource.

[0154] Optionally, in an embodiment of the present application, in combination with Figure 2, as shown in Figure 3, when the above-mentioned step 201 is specifically implemented through the above-mentioned step 201a, after the above-mentioned step 202, the waveform determination method provided in the embodiment of the present application also includes the following steps 203 and 204.

[0155] Step 203: When it is detected that the target message is a newly introduced uplink channel or signal, the network side device transmits the second channel using the target waveform.

[0156] Step 204: The terminal receives the second channel using the target waveform.

[0157] It is understood that the newly introduced uplink channel or signal here is used for at least one of the following: indicating waveform-related capability information supported by the terminal, or requesting the use of a target waveform for communication with the terminal. If the network-side device detects that the target message is a newly introduced uplink channel or signal, the network-side device may transmit the second channel using the target waveform.

[0158] In an embodiment of the present application, the above-mentioned second channel includes at least one of the following: a downlink synchronization channel or signal, SSB, SIB, a common PDCCH, a common PDSCH, Msg2, and Msg4.

[0159] It should be noted that the SSB mentioned in the embodiments of the present application refers to the downlink synchronization signal. It is not only the SSB defined in 5G, but also the downlink synchronization signal in 6G or future evolved mobile communication systems. It may have other names in 6G.

[0160] Optionally, in an embodiment of the present application, a waveform may be used by default for transmission of signals or channels in a non-connected (eg, idle or inactive) state.

[0161] Optionally, in an embodiment of the present application, the above step 201 can be specifically implemented through the following step 201c.

[0162] Step 201c: When the first condition is met, the terminal sends a target message to the network side device.

[0163] In the embodiment of the present application, the first condition includes at least one of the following:

[0164] A signal quality parameter measured by a downlink signal exceeds or falls below a threshold;

[0165] The terminal's moving speed exceeds or falls below a threshold;

[0166] The number of transmission failures of the terminal under a certain waveform exceeds a threshold;

[0167] There are special circumstances in the terminal, which include at least one of the following: the terminal has low power consumption requirements or reduced power consumption requirements, the terminal is power-limited (for example, power limitation due to Specific Absorption Rate (SAR) requirements), and the terminal's radio frequency indicators are limited.

[0168] Optionally, in an embodiment of the present application, the downlink signal may be a reference signal for estimating path loss.

[0169] Optionally, in an embodiment of the present application, the above-mentioned signal quality parameters may include at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), reference signal strength indicator (RSSI), and signal to interference plus noise ratio (SINR).

[0170] Optionally, in an embodiment of the present application, the thresholds for different channels / signals used in the first condition may be the same or different. For example, when the thresholds for different channels are different, the RSRP / RSRQ thresholds for different channels may be determined by adding different RSRP offsets relative to a certain reference RSRP.

[0171] Optionally, in an embodiment of the present application, the above step 201 can be specifically implemented through the following step 201d.

[0172] Step 201d: The terminal sends a target message to the network-side device based on the third information.

[0173] In an embodiment of the present application, the above-mentioned third information includes at least one of the following: terminal, terminal type, terminal priority, target channel, channel type, target frequency band, target bandwidth, and target scenario.

[0174] In the embodiment of the present application, the granularity of the terminal indicating waveform capability or requesting target waveform may include at least one of the following:

[0175] Each terminal reports, i.e., each terminal has a waveform capability or requests a target waveform;

[0176] Each terminal type is reported, and terminals of the same type have the same waveform capabilities or request the same target waveform;

[0177] Priority reporting for each terminal. Terminals with the same priority have the same waveform capability or request the same target waveform.

[0178] Each channel reports, that is, each channel has a waveform capability or requests a target waveform;

[0179] Each channel type is reported. The same channel type has the same waveform capability or requests the same target waveform; for example, control channel, data channel, synchronization channel, broadcast channel, uplink channel, downlink channel;

[0180] Each band / FR reports, that is, each band / FR has a waveform capability or requests a target waveform. The same band / FR has the same waveform capability or requests the same target waveform.

[0181] Each scenario is reported, and the same scenario has the same waveform capability or requests the same target waveform.

[0182] In the embodiment of the present application, the terminal can select the most appropriate waveform for different scenarios, use cases, deployment conditions, and mobile speeds, which is beneficial for the terminal to achieve the purpose of increasing capacity, improving coverage, and reducing power consumption.

[0183] Optionally, in an embodiment of the present application, in combination with FIG. 2 , as shown in FIG. 4 , after the above step 202 , the waveform determination method provided in the embodiment of the present application further includes the following steps 205 to 207 .

[0184] Step 205: The network-side device sends a first signaling to the terminal.

[0185] Step 206: The terminal receives a first signaling from the network-side device.

[0186] In an embodiment of the present application, the first signaling includes waveform configuration information, which is used to configure or reconfigure one or more target waveforms, or to indicate whether the waveform in use has changed.

[0187] The first signaling is any one of the following: RRC, DCI, and Medium Access Control-Control Element (MAC CE).

[0188] Optionally, in an embodiment of the present application, the above-mentioned one or more target waveforms are waveforms corresponding to the fourth information, and the fourth information includes at least one of the following: frequency domain resources (e.g., Band / FR, bandwidth size), transmission scenario, device movement speed, spectrum deployment mode, and whether to repeat transmission.

[0189] Optionally, in an embodiment of the present application, the above-mentioned transmission scenarios may include at least one of the following: a high-speed transmission scenario, a high-frequency / ultra-high-frequency band transmission scenario, a terrestrial network (TN) scenario, and an NTN scenario.

[0190] Optionally, in an embodiment of the present application, the deployment mode of the above-mentioned spectrum may include at least one of the following: standalone deployment mode, guard band deployment mode, in-band deployment mode, frequency division duplexing (FDD) mode, time division duplexing (TDD) mode, and full duplex mode.

[0191] For example, the network-side device configures waveforms corresponding to the FR1 and FR2 frequency bands respectively through RRC, and the terminal uses the corresponding waveforms for transmission or reception when operating in the corresponding frequency bands. Alternatively, the network-side device configures waveforms corresponding to mobile speeds less than 250 km / h and greater than 250 km / h respectively through RRC, and the terminal determines to use the corresponding waveform for transmission or reception based on its own mobile speed.

[0192] Exemplarily, when the terminal's moving speed exceeds 250 km / h, the terminal triggers the sending of a waveform request (i.e., a request to use a target waveform to communicate with the terminal); the terminal implicitly or explicitly sends a waveform request in a specific uplink channel; the network side receives the waveform request and uses the target waveform recommended by the terminal to send subsequent channels or signals; after the terminal sends the waveform request, it uses the target waveform for reception after a period of time, and this period of time can be predefined by the protocol or configured by RRC to indicate the time point when the target waveform takes effect.

[0193] Step 207: The terminal performs signal transmission based on the waveform configuration information.

[0194] In an embodiment of the present application, the terminal may determine a target waveform for transmission or reception based on the waveform configuration information, for example, for reception of a subsequent common PDSCH.

[0195] Optionally, in an embodiment of the present application, the terminal may use different waveforms for reception or blind detection based on its own capabilities. For example, a terminal with a certain waveform capability will only perform blind detection at the time domain position or frequency domain position where the corresponding waveform is sent.

[0196] Optionally, in an embodiment of the present application, after the above step 202, the waveform determination method provided in the embodiment of the present application further includes the following step 208 or step 209.

[0197] Step 208: The network-side device sends a downlink signal using the target waveform.

[0198] Step 209: The network-side device sends downlink signals multiple times using multiple waveforms.

[0199] Optionally, in an embodiment of the present application, the above step 209 can be specifically implemented by any one of the following steps 209a to 209c.

[0200] Step 209a: The network-side device uses multiple waveforms to send downlink signals at different resource locations. The resource location includes at least one of the following: a frequency domain location and a time domain location.

[0201] For example, the frequency domain positions of multiple transmissions of a downlink signal with the same waveform are fixed, while the time domain positions of multiple transmissions of a downlink signal with the same waveform are periodic.

[0202] Step 209b: The network-side device uses multiple waveforms to send downlink signals multiple times in a mode.

[0203] For example, the OTFS waveform and the OFDM waveform are coexistently transmitted in a time division multiplexing (TDM) mode or a code division multiplexing (CDM) mode.

[0204] Step 209c: The network-side device uses multiple waveforms to send downlink signals multiple times at specific locations or times.

[0205] An embodiment of the present application provides a waveform determination method, in which a terminal can send a target message to a network-side device, and the target message is used for at least one of the following: indicating waveform-related capability information supported by the terminal; and requesting to use a target waveform to communicate with the terminal. In this solution, the terminal can indicate waveform-related capability information supported by the terminal to the network-side device, that is, the terminal can use capability reporting to enable the network-side device to learn the waveforms that the terminal can support, and thus use the waveform supported by the terminal for signal transmission; or, the terminal can directly request the network-side device to use the target waveform to communicate with the terminal, that is, the terminal and the network-side device negotiate to use the target waveform for signal transmission; in this way, the terminal can correctly receive the signal sent by the network-side device, thereby improving the signal transmission performance.

[0206] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment, can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation can be determined according to actual usage requirements, and the embodiments of this application do not limit this.

[0207] The waveform determination method provided in the embodiment of the present application can be executed by a waveform determination device. In the embodiment of the present application, the waveform determination device provided in the embodiment of the present application is described by taking the waveform determination method executed by the waveform determination device as an example.

[0208] FIG5 shows a possible structural diagram of a waveform determination device involved in an embodiment of the present application. As shown in FIG5 , the waveform determination device 40 may include: a sending module 41 .

[0209] The sending module 41 is configured to send a target message to the network-side device, where the target message is used for at least one of the following:

[0210] Indicates the waveform-related capability information supported by the terminal;

[0211] Requests communication with the target using the target waveform.

[0212] In one possible implementation, the target message includes at least one of the following:

[0213] PRACH, Msg1, Msg3, Msg3 PUSCH, MsgA, MsgA PRACH, MsgA PUSCH, messages sent by the terminal in the connected state, uplink synchronization signals or channels, uplink messages, and other newly introduced uplink channels or signals.

[0214] In one possible implementation, the waveform-related capability information includes at least one of the following:

[0215] First information, the first information including at least one of the following: the number of supported waveforms, the types of supported waveforms, and the identifiers or indexes of supported waveforms;

[0216] Information used to indicate support for waveform switching;

[0217] Information for indicating support for use of a target waveform on a first channel, where the first channel includes at least one of the following: an uplink channel, a downlink channel, a broadcast channel, a synchronization channel, a terminal-specific channel, a control channel, and a data channel;

[0218] Information indicating support for using a target waveform on the first frequency domain unit.

[0219] In a possible implementation, the target waveform is any one of the following: a multi-carrier waveform, a single-carrier waveform, an OTFS waveform, a low-power waveform, a linear waveform, a frequency-modulated waveform, an amplitude-modulated waveform, and a phase-modulated waveform.

[0220] In a possible implementation, the waveform-related capability information is predefined by default or by a protocol, or is preconfigured;

[0221] or,

[0222] The above-mentioned target message carries second information to indicate waveform-related capability information or request to use the target waveform to communicate with the terminal. The second information corresponds to the waveform supported by the terminal, and the second information includes at least one of the following: the priority of the terminal, the type of the terminal, and the capability level of the terminal.

[0223] In one possible implementation, the target message includes an uplink synchronization channel; the target message is indicated or requested by at least one of the following: a random access preamble or a random access preamble index of the uplink synchronization channel, an RO position or an RO index of the uplink synchronization channel;

[0224] Alternatively, the target message includes Msg3; the target message is indicated or requested by at least one of the following: an information bit or field in Msg3 PUSCH, an LCID or eLCID of information carried by Msg3 PUSCH, an uplink control message of Msg3, a DMRS resource of Msg3 PUSCH, a scrambling sequence of Msg3 PUSCH, or a resource or information of Msg3 PUSCH;

[0225] Alternatively, the target message includes MsgA; the target message is indicated or requested through at least one of the following: information bits or fields of MsgA, LCID or eLCID of MsgA carrying information, resources or information of MsgA, information bits or fields of MsgA PUSCH, LCID or eLCID of MsgA PUSCH carrying information, resources or information of MsgA PUSCH.

[0226] In one possible implementation, the manner of indicating or requesting through the resources or information of the Msg3 PUSCH includes at least one of the following:

[0227] Implicit indication or request of time-frequency domain resources via Msg3 PUSCH;

[0228] Implicitly indicated or requested through the content of Msg3 PUSCH;

[0229] Implicit indication or request of the payload size of the Msg3 PUSCH;

[0230] The type of PUSCH is implicitly indicated or requested through Msg3.

[0231] In one possible implementation, the manner of indicating or requesting through the resources or information of MsgA or MsgA PUSCH includes at least one of the following:

[0232] Implicit indication or request of time-frequency domain resources through MsgA or MsgA PUSCH;

[0233] Implicitly indicated or requested by MsgA or the group to which the MsgA PUSCH belongs.

[0234] In a possible implementation, the sending module 41 is specifically configured to perform any of the following:

[0235] Sending newly introduced uplink channels or signals to network-side devices;

[0236] Send targeted messages to network-side devices by using specific resources, resource locations, or sending times.

[0237] In one possible implementation, as shown in FIG6 in combination with FIG5 , the waveform determination apparatus 40 provided in an embodiment of the present application further includes a receiving module 42. The receiving module 42 is configured to receive a second channel using a target waveform after the sending module 41 sends the newly introduced uplink channel or signal to the network-side device. The second channel includes at least one of the following: a downlink synchronization channel or signal, an SSB, a SIB, a common PDCCH, a common PDSCH, Msg2, or Msg4.

[0238] In a possible implementation, the sending module 41 is specifically configured to send the target message to the network-side device by using a specific resource, resource location, or sending time in a specific situation, where the specific situation is the first situation or the second situation.

[0239] The first situation includes at least one of the following: there is a requirement to reduce power consumption, power is limited, there is a problem with network coverage, and the terminal is detected to be moving at high speed;

[0240] The second situation includes at least one of the following: the currently used waveform or the default waveform cannot continue to be used, the currently used waveform or the default waveform conflicts with the transmission configuration of other waveforms, the currently used waveform or the default waveform cannot meet the performance requirements, and the currently used waveform or the default waveform does not meet the radio frequency indicators.

[0241] In a possible implementation, the sending module 41 is specifically configured to send a target message to the network-side device when the first condition is met;

[0242] The first condition includes at least one of the following:

[0243] A signal quality parameter measured by a downlink signal exceeds or falls below a threshold;

[0244] The terminal's moving speed exceeds or falls below a threshold;

[0245] The number of transmission failures of the terminal under a certain waveform exceeds a threshold;

[0246] The terminal has a special situation, which includes at least one of the following: the terminal has a low power consumption requirement or a reduced power consumption requirement, the terminal has power limitation, and the terminal has a limited radio frequency indicator.

[0247] In a possible implementation, the sending module 41 is specifically configured to send a target message to the network-side device based on the third information;

[0248] The third information includes at least one of the following: terminal, terminal type, terminal priority, target channel, channel type, target frequency band, target bandwidth, and target scenario.

[0249] In one possible implementation, as shown in FIG7 in combination with FIG5 , the waveform determination apparatus 40 provided in an embodiment of the present application further includes: a receiving module 42 and an execution module 43. The receiving module 42 is configured to receive a first signaling from the network-side device after the sending module 41 sends the target message to the network-side device. The first signaling includes waveform configuration information, which is used to configure or reconfigure one or more target waveforms, or to indicate whether the waveform being used has changed. The execution module 43 is configured to perform signal transmission based on the waveform configuration information received by the receiving module 42. The first signaling is any one of the following: RRC, DCI, or MAC-CE.

[0250] In one possible implementation, the one or more target waveforms are waveforms corresponding to fourth information, and the fourth information includes at least one of the following: frequency domain resources, transmission scenarios, device movement speed, spectrum deployment mode, and whether repeated transmission is performed.

[0251] An embodiment of the present application provides a waveform determination device, which can indicate the waveform-related capability information supported by the waveform determination device to the network-side device, that is, the waveform determination device can enable the network-side device to know the waveforms that the waveform determination device can support by reporting the capability, so that the waveform supported by the waveform determination device is used for signal transmission; or, the waveform determination device can directly request the network-side device to use the target waveform to communicate with it, that is, the waveform determination device and the network-side device negotiate to use the target waveform for signal transmission; in this way, the waveform determination device can correctly receive the signal sent by the network-side device, thereby improving the signal transmission performance.

[0252] The waveform determination device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0253] The waveform determination device provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned waveform determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0254] FIG8 shows a possible structural diagram of a waveform determination device involved in an embodiment of the present application. As shown in FIG8 , the waveform determination device 50 may include: a receiving module 51 .

[0255] The receiving module 51 is configured to receive a target message from a terminal, where the target message is used for at least one of the following:

[0256] Indicates the waveform-related capability information supported by the terminal;

[0257] Requests communication with the target using the target waveform.

[0258] In one possible implementation, as shown in FIG9 in combination with FIG8 , the waveform determination apparatus 50 provided in an embodiment of the present application further includes a sending module 52. The sending module 52 is configured to, after the receiving module 51 receives the target message from the terminal, send a second channel using the target waveform if it detects that the target message is a newly introduced uplink channel or signal; wherein the second channel includes at least one of the following: a downlink synchronization channel or signal, an SSB, a SIB, a common PDCCH, a common PDSCH, Msg2, or Msg4.

[0259] In one possible implementation, as shown in FIG9 in combination with FIG8 , the waveform determination apparatus 50 provided in an embodiment of the present application further includes a sending module 52. The sending module 52 is configured to send a first signaling to the terminal after the receiving module 51 receives the target message from the terminal. The first signaling includes waveform configuration information, which is used to configure or reconfigure one or more target waveforms, or to indicate whether the used waveform has changed. The first signaling is any one of the following: RRC, DCI, or MAC-CE.

[0260] In one possible implementation, as shown in FIG9 in conjunction with FIG8 , the waveform determination apparatus 50 provided in an embodiment of the present application further includes a sending module 52. The sending module 52 is configured to send a downlink signal using a target waveform after the receiving module 51 receives the target message from the terminal; or to send the downlink signal multiple times using multiple waveforms.

[0261] In a possible implementation, the sending module 52 is specifically configured to perform any of the following:

[0262] Using multiple waveforms to send downlink signals at different resource locations, the resource location includes at least one of the following: a frequency domain location and a time domain location;

[0263] Use multiple waveforms to send downlink signals multiple times in one pattern;

[0264] Use multiple waveforms to send downlink signals multiple times at specific locations or times.

[0265] An embodiment of the present application provides a waveform determination device, which can receive waveform-related capability information supported by a terminal indicated by the terminal, that is, the waveform determination device can obtain the waveform that the terminal can support based on the terminal's capability report, and thus use the waveform supported by the terminal for signal transmission; or, the waveform determination device can receive a beam request from the terminal to communicate with the terminal using a target waveform, that is, the network-side device and the terminal negotiate to transmit signals through the target waveform; in this way, the terminal can correctly receive the signal sent by the network-side device, thereby improving the signal transmission performance.

[0266] The waveform determination device provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned waveform determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0267] As shown in Figure 10, an embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, wherein the memory 5002 stores a program or instruction that can be run on the processor 5001. For example, when the communication device 5000 is the above-mentioned terminal, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned terminal-side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 5000 is the above-mentioned network-side device, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned network-side device-side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0268] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the above-described method embodiment. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and each implementation process and implementation method of the above-described method embodiment can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0269] The terminal 7000 includes but is not limited to: a radio frequency unit 7001, a network module 7002, an audio output unit 7003, an input unit 7004, a sensor 7005, a display unit 7006, a user input unit 7007, an interface unit 7008, a memory 7009 and at least some of the components of the processor 7010.

[0270] Those skilled in the art will appreciate that the terminal 7000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 7010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0271] It should be understood that in an embodiment of the present application, the input unit 7004 may include a graphics processing unit (GPU) 70041 and a microphone 70042, and the graphics processor 70041 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 7006 may include a display panel 70061, and the display panel 70061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 7007 includes a touch panel 70071 and at least one of other input devices 70072. The touch panel 70071 is also called a touch screen. The touch panel 70071 may include two parts: a touch detection device and a touch controller. Other input devices 70072 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 an operating stick, which will not be repeated here.

[0272] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 7001 may transmit the data to the processor 7010 for processing. Furthermore, the RF unit 7001 may send uplink data to the network-side device. Typically, the RF unit 7001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0273] The memory 7009 can be used to store software programs or instructions and various data. The memory 7009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 7009 may include a volatile memory or a non-volatile memory. Among them, 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. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 7009 in the embodiment of the present application includes, but is not limited to, these and any other suitable types of memory.

[0274] The processor 7010 may include one or more processing units. Optionally, the processor 7010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into the processor 7010.

[0275] The terminal provided in the embodiment of the present application can implement the various processes implemented in the above method embodiment and achieve the same technical effect. The implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above waveform determination method embodiment. To avoid repetition, it will not be repeated here.

[0276] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the above-described method embodiment. This network-side device embodiment corresponds to the above-described network-side device method embodiment, and each implementation process and implementation method of the above-described method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0277] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 12, the network-side device 600 includes an antenna 61, a radio frequency device 62, a baseband device 63, a processor 64, and a memory 65. Antenna 61 is connected to radio frequency device 62. In the uplink direction, radio frequency device 62 receives information via antenna 61 and sends the received information to baseband device 63 for processing. In the downlink direction, baseband device 63 processes the information to be transmitted and sends it to radio frequency device 62. Radio frequency device 62 processes the received information and then sends it through antenna 61.

[0278] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 63 , which includes a baseband processor.

[0279] The baseband device 63 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 12, one of which is, for example, a baseband processor, which is connected to the memory 65 through a bus interface to call the program in the memory 65 and execute the network device operations shown in the above method embodiment.

[0280] The network side device may further include a network interface 66, which is, for example, a Common Public Radio Interface (CPRI).

[0281] Specifically, the network side device 600 of the embodiment of the present application also includes: instructions or programs stored in the memory 65 and executable on the processor 64. The processor 64 calls the instructions or programs in the memory 65 to execute the methods executed by the modules shown in the above-mentioned waveform determination device and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0282] 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 waveform determination method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0283] 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), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0284] 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 waveform determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0285] 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.

[0286] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned waveform determination method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0287] An embodiment of the present application further provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the waveform determination method described above, and the network-side device can be used to execute the steps of the waveform determination method described above.

[0288] 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 sentence "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 pointed out 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.

[0289] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0290] 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 of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A waveform determination method, comprising: The terminal sends a target message to the network side device, where the target message is used for at least one of the following: Indicating waveform-related capability information supported by the terminal; A request is made to communicate with the terminal using a target waveform.

2. The method according to claim 1, wherein: The target message includes at least one of the following: Physical random access channel PRACH, messages Msg1, Msg3, Msg3 physical uplink shared channel PUSCH, MsgA, MsgA PRACH, MsgA PUSCH, messages sent by the terminal in the connected state, uplink synchronization signals or channels, uplink messages, and other newly introduced uplink channels or signals.

3. The method according to claim 1 or 2, wherein: The waveform-related capability information includes at least one of the following: First information, the first information comprising at least one of the following: the number of supported waveforms, the types of supported waveforms, and the identifiers or indexes of supported waveforms; Information used to indicate support for waveform switching; Information for indicating support for use of a target waveform on a first channel, where the first channel includes at least one of the following: an uplink channel, a downlink channel, a broadcast channel, a synchronization channel, a terminal-specific channel, a control channel, and a data channel; Information indicating support for using a target waveform on the first frequency domain unit.

4. The method according to any one of claims 1 to 3, wherein: The target waveform is any one of the following: a multi-carrier waveform, a single-carrier waveform, an orthogonal time-frequency space modulation (OTFS) waveform, a low-power waveform, a linear waveform, a frequency-modulated waveform, an amplitude-modulated waveform, and a phase-modulated waveform.

5. The method according to any one of claims 1 to 4, wherein: The waveform-related capability information is default or predefined by a protocol, or preconfigured; or, The target message carries second information to indicate the waveform-related capability information or request to use the target waveform to communicate with the terminal. The second information corresponds to the waveform supported by the terminal, and the second information includes at least one of the following: the priority of the terminal, the type of the terminal, and the capability level of the terminal.

6. The method according to any one of claims 1 to 5, wherein: The target message includes an uplink synchronization channel; the target message is indicated or requested by at least one of the following: a random access preamble or a random access preamble index of the uplink synchronization channel, a random access opportunity RO position or an RO index of the uplink synchronization channel; Alternatively, the target message includes Msg3; the target message is indicated or requested through at least one of the following: an information bit or field in the Msg3 PUSCH, a logical channel identifier LCID or an enhanced logical channel identifier eLCID carrying information of the Msg3 PUSCH, an uplink control message of the Msg3, a demodulation reference signal DMRS resource of the Msg3 PUSCH, a scrambling sequence of the Msg3 PUSCH, and resources or information of the Msg3 PUSCH; Alternatively, the target message includes MsgA; the target message is indicated or requested by at least one of the following: the information bit or field of the MsgA, the LCID or eLCID of the information carried by the MsgA, the resources or information of the MsgA, the information bit or field of the MsgA PUSCH, the LCID or eLCID of the information carried by the MsgA PUSCH, and the resources or information of the MsgA PUSCH.

7. The method according to claim 6, wherein: The manner of indicating or requesting through the resource or information of the Msg3 PUSCH includes at least one of the following: Implicit indication or request of time-frequency domain resources through the Msg3 PUSCH; Implicitly indicated or requested through the content of the Msg3 PUSCH; Implicit indication or request through the payload size of the Msg3 PUSCH; The type of PUSCH is implicitly indicated or requested by the Msg3.

8. The method according to claim 6, wherein: The manner of indicating or requesting through the resources or information of the MsgA or the MsgA PUSCH includes at least one of the following: Implicitly indicating or requesting through the MsgA or the MsgA PUSCH time-frequency domain resources; It is implicitly indicated or requested through the MsgA or the group to which the MsgA PUSCH belongs.

9. The method according to any one of claims 1 to 8, wherein: The terminal sends a target message to the network side device, including any of the following: The terminal sends a newly introduced uplink channel or signal to the network side device; The terminal sends the target message to the network side device by using a specific resource, resource location or sending time.

10. The method according to claim 9, wherein: After the terminal sends the newly introduced uplink channel or signal to the network side device, the method further includes: The terminal uses a target waveform to receive a second channel, and the second channel includes at least one of the following: a downlink synchronization channel or signal, a synchronization signal block SSB, a system information block SIB, a common physical downlink control channel PDCCH, a common physical downlink shared channel PDSCH, Msg2, and Msg4.

11. The method according to claim 9, wherein: The terminal sends the target message to the network side device by using a specific resource, resource location or sending time, including: In a specific case, the terminal sends the target message to the network side device by using a specific resource, resource location or sending time, and the specific case is the first case or the second case; The first situation includes at least one of the following: there is a requirement to reduce power consumption, power is limited, there is a problem with network coverage, and the terminal is detected to be moving at a high speed; The second situation includes at least one of the following: the currently used waveform or the default waveform cannot continue to be used, the currently used waveform or the default waveform conflicts with the transmission configuration of other waveforms, the currently used waveform or the default waveform cannot meet the performance requirements, and the currently used waveform or the default waveform does not meet the radio frequency indicators.

12. The method according to any one of claims 1 to 11, wherein: The terminal sends a target message to the network side device, including: When the first condition is met, the terminal sends the target message to the network side device; The first condition includes at least one of the following: A signal quality parameter measured by a downlink signal exceeds or falls below a threshold; The moving speed of the terminal exceeds or falls below a threshold; The number of transmission failures of the terminal under a waveform exceeds a threshold; The terminal has a specific situation, and the specific situation includes at least one of the following: the terminal has a low power consumption requirement or a reduced power consumption requirement, the terminal has power limitation, and the terminal has a limited radio frequency indicator.

13. The method according to any one of claims 1 to 12, wherein: The terminal sends a target message to the network side device, including: The terminal sends the target message to the network side device based on the third information; The third information includes at least one of the following: terminal, terminal type, terminal priority, target channel, channel type, target frequency band, target bandwidth, and target scenario.

14. The method according to any one of claims 1 to 13, wherein: After the terminal sends the target message to the network side device, the method further includes: The terminal receives a first signaling from the network side device, where the first signaling includes waveform configuration information, where the waveform configuration information is used to configure or reconfigure one or more target waveforms, or to indicate whether a used waveform has changed; The terminal performs signal transmission based on the waveform configuration information; The first signaling is any one of the following: radio resource control RRC, downlink control information DCI, and media access control-control unit MAC-CE.

15. The method according to claim 14, wherein: The one or more target waveforms are waveforms corresponding to fourth information, and the fourth information includes at least one of the following: frequency domain resources, transmission scenarios, device moving speed, spectrum deployment mode, and whether to repeat transmission.

16. A waveform determination method, comprising: The network side device receives a target message from the terminal, where the target message is used for at least one of the following: Indicating waveform-related capability information supported by the terminal; A request is made to communicate with the terminal using a target waveform.

17. The method according to claim 16, wherein: After the network side device receives the target message from the terminal, the method further includes: In the case where it is detected that the target message is a newly introduced uplink channel or signal, the network side device sends the second channel using a target waveform; The second channel includes at least one of the following: a downlink synchronization channel or signal, SSB, SIB, a common PDCCH, a common PDSCH, Msg2, and Msg4.

18. The method according to claim 16, wherein: After the network side device receives the target message from the terminal, the method further includes: The network side device sends a first signaling to the terminal, wherein the first signaling includes waveform configuration information, and the waveform configuration information is used to configure or reconfigure one or more target waveforms, or to indicate whether the waveform used has changed; wherein the first signaling is any one of the following: RRC, DCI, MAC-CE.

19. The method according to claim 16, wherein: After the network side device receives the target message from the terminal, the method further includes: The network side device uses a target waveform to send a downlink signal; or, The network side device uses multiple waveforms to send downlink signals multiple times.

20. The method according to claim 19, wherein: The network side device uses multiple waveforms to send downlink signals multiple times, including any of the following: The network side device uses multiple waveforms to send downlink signals respectively at different resource locations, and the resource location includes at least one of the following: frequency domain location and time domain location; The network side device uses multiple waveforms to send downlink signals multiple times in one mode; The network side device uses a variety of waveforms to send downlink signals multiple times at specific locations or times.

21. A waveform determination device, comprising: Send module; The sending module is used to send a target message to the network side device, and the target message is used for at least one of the following: Indicates the waveform-related capability information supported by the terminal; A request is made to communicate with the terminal using a target waveform.

22. A waveform determination device, comprising: Receiver module; The receiving module is used to receive a target message from a terminal, where the target message is used for at least one of the following: Indicating waveform-related capability information supported by the terminal; A request is made to communicate with the terminal using a target waveform.

23. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the waveform determination method according to any one of claims 1 to 15 are implemented.

24. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the waveform determination method as described in any one of claims 16 to 20 are implemented.

25. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the waveform determination method as claimed in any one of claims 1 to 15, or implements the steps of the waveform determination method as claimed in any one of claims 16 to 20.

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