Waveform determination method, apparatus, communication device and storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a waveform determination method, an apparatus, a communication device and a storage medium. The waveform determination method in the embodiments of the present application comprises: a terminal determines waveform-related information, the waveform-related information being used for indicating at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission is changed, and a signal or channel corresponding to the waveform used for transmission; and, on the basis of the waveform-related information, the terminal determines a target waveform and uses the target waveform to perform signal or channel transmission.

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 202311540710.9 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 or receiving different waveforms is different. If a base station or terminal is unaware of the waveform used by the other device, it may not be able to correctly receive the signal.

[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 or terminal does not know the waveform used by the opposite device to send, and the base station or terminal will not be able to correctly receive the signal.

[0009] In a first aspect, a waveform determination method is provided, the method comprising: a terminal determining waveform-related information, the waveform-related information being used to indicate at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; the terminal determining a target waveform based on the waveform-related information, and using the target waveform to perform signal or channel transmission.

[0010] In a second aspect, a waveform determination method is provided, which includes: a network side device determines waveform-related information, where the waveform-related information is used to indicate at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission; the network side device determines a target waveform based on the waveform-related information, and uses the target waveform to perform signal or channel transmission.

[0011] In a third aspect, a waveform determination apparatus is provided, comprising a determination module and a transmission module. The determination module is configured to determine waveform-related information, where the waveform-related information indicates at least one of the following: a waveform to be transmitted, a configuration corresponding to the waveform to be transmitted, whether the waveform to be transmitted has changed, and a signal or channel corresponding to the waveform to be transmitted. The determination module is further configured to determine a target waveform based on the waveform-related information. The transmission module is configured to perform signal or channel transmission using the target waveform determined by the determination module.

[0012] In a fourth aspect, a waveform determination device is provided, comprising: a determination module and a transmission module. The determination module is configured to determine waveform-related information, where the waveform-related information indicates at least one of the following: a waveform to be transmitted, a configuration corresponding to the waveform to be transmitted, whether the waveform to be transmitted has changed, and a signal or channel corresponding to the waveform to be transmitted. The determination module is further configured to determine a target waveform based on the waveform-related information. The transmission module is configured to perform signal or channel transmission using the target waveform determined by the determination module.

[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 a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is configured to determine waveform-related information indicating at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; and determining a target waveform based on the waveform-related information. The communication interface is configured to perform signal or channel transmission using the target waveform.

[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 an eighth aspect, a network-side device is provided, comprising a processor and a communication interface, wherein the processor is configured to determine waveform-related information indicating at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; and determining a target waveform based on the waveform-related information. The communication interface is configured to perform signal or channel transmission using the target waveform.

[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, the terminal can determine waveform-related information and determine a target waveform based on the waveform-related information to use the target waveform to perform signal or channel transmission. The waveform-related information is used to indicate at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission. In this solution, the terminal can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the terminal and the network side align their understanding of the waveform currently used, thereby determining the target waveform actually used for transmission to perform signal or channel transmission. In this way, it is ensured that the base station or terminal can correctly receive the signal, 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 an example of an SSB waveform transmission method provided in an embodiment of the present application;

[0027] FIG6 is a second example schematic diagram of an SSB waveform transmission method provided in an embodiment of the present application;

[0028] FIG7 is a fourth flowchart of a waveform determination method provided in an embodiment of the present application;

[0029] FIG8 is a schematic diagram of a structure of a waveform determination device according to an embodiment of the present application;

[0030] FIG9 is a second 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. Existing waveform indication method

[0042] In the prior art, the transmission waveforms of the normal PUSCH and the PUSCH used for Msg3 transmission are respectively configured through the transform precoder (transformprecoder) in the uplink physical uplink shared channel (PUSCH)-configuration (config) and the Msg3-transformPrecoding in the random access channel (RACH)-configuration command (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] In the prior art, 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 preamble conflict of the terminal. 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. Since the existing 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 a MsgB message 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 or receiving different waveforms differs. If a base station or terminal doesn't know the waveform used by the other device, it 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 or a network-side device can determine waveform-related information and determine a target waveform based on the waveform-related information to use the target waveform to perform signal or channel transmission, and the waveform-related information is used to indicate at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission. In this solution, the terminal or the network-side device can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the terminal and the network side align their understanding of the waveform currently used, thereby determining the target waveform actually used for transmission to perform signal or channel transmission. In this way, it is ensured that the terminal and the network side can correctly receive the signal, 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 determines waveform-related information.

[0078] Step 202: The terminal determines a target waveform based on waveform-related information, and uses the target waveform to perform signal or channel transmission.

[0079] In an embodiment of the present application, the above-mentioned waveform-related information is used to indicate at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission.

[0080] Optionally, in an embodiment of the present application, the configuration corresponding to the waveform used for the above-mentioned transmission may include at least one of the time domain resources, frequency domain resources, resource location, and sending time corresponding to the waveform used for transmission.

[0081] Optionally, in an embodiment of the present application, the above-mentioned waveform may include at least 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.

[0082] 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.

[0083] 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).

[0084] 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.

[0085] Optionally, in an embodiment of the present application, the low-power waveform may be an ultra-wideband (UWB) waveform.

[0086] 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.

[0087] Optionally, in the embodiment of the present application, in combination with FIG. 2 , as shown in FIG. 3 , the above step 201 may be specifically implemented through the following step 201 a.

[0088] Step 201a: The terminal determines waveform-related information based on first information, where the first information includes at least one of the following:

[0089] at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission;

[0090] Transmission scenario;

[0091] at least one of a terminal type and a terminal movement speed;

[0092] Spectrum deployment model;

[0093] Random access channel configuration, resources or preamble format;

[0094] Configuration or time-frequency domain location of downlink synchronization signals;

[0095] The second information is used to indicate whether one or more channels perform repeated transmission.

[0096] It should be noted that the random access channel (such as PRACH) mentioned in the embodiments of the present application is a reference to the uplink synchronization channel. It is not only the random access channel 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.

[0097] Optionally, in an embodiment of the present application, the frequency domain resources may include at least one of the following: a frequency band, a subband, a frequency band combination, and a frequency range (FR).

[0098] 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 a non-terrestrial network (NTN) scenario.

[0099] 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 duplexing mode.

[0100] Optionally, in an embodiment of the present application, different first information corresponds to different waveforms (ie, there is a predefined correspondence between the first information and the waveform).

[0101] Optionally, in an embodiment of the present application, different frequency domain resources have a predefined correspondence with different waveforms. For example, when the network-side device operates in millimeter wave, the DFT-s-OFDM waveform is used by default for transmission or reception; when the terminal is to receive or transmit in the millimeter wave frequency band, the DFT-S-OFDM waveform is used by default.

[0102] For example, for the millimeter wave frequency band, a waveform with a low peak to average power ratio (PAPR) (such as a DFT-S-OFDM or a constant envelope waveform) is used as a default waveform for a common channel.

[0103] Optionally, in an embodiment of the present application, each first information corresponds to one or more waveforms.

[0104] Optionally, in an embodiment of the present application, the first information is taken as a frequency domain resource as an example. Each frequency domain resource can be associated with multiple waveforms. For example, it is necessary to support terminals of multiple types / capabilities on a certain band, such as the need to support some Internet of Things (IoT) terminals, which have relatively weak capabilities (such as low power, small receiving bandwidth, etc.); and it is also necessary to support some enhanced mobile broadband (eMBB) terminals, which have relatively strong capabilities (such as high power, large receiving bandwidth, etc.). Although the two terminals operate on the same band, the waveforms used may be different.

[0105] Optionally, in embodiments of the present application, different transmission scenarios may correspond to different waveforms, i.e., there is a predefined correspondence. For example, TN and NTN scenarios correspond to different waveforms. The default waveform for the common channel in the TN scenario is CP-OFDM, while the default waveform for the common channel in the NTN scenario is DFT-s-OFDM.

[0106] Optionally, in an embodiment of the present application, different terminal types correspond to different waveforms, that is, there is a predefined correspondence; the above step 201a can be specifically implemented through the following step 201a1 or step 201a2.

[0107] Step 201a1: The terminal determines waveform-related information based on capability information of supported waveforms, where the capability information is determined by the type of the terminal.

[0108] Optionally, in an embodiment of the present application, the terminal uses different waveforms for blind detection in a time division multiplexing (TDM) or frequency division multiplexing (FDM) manner based on its own waveform support capabilities. The network-side device can use predefined multiple waveforms to send common channels in a TDM or FDM manner.

[0109] Exemplarily, the terminal has the ability to transmit and receive CP-OFDM and DFT-s-OFDM waveforms. The protocol defines two waveforms, and the terminal uses at most two waveforms for blind detection on each synchronization raster (Sync.raster).

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

[0111] Step 201a2: The terminal determines a first transmission scenario corresponding to the type of the terminal, and determines waveform-related information based on the first transmission scenario.

[0112] For example, the corresponding scenario can be determined based on the terminal type. A terminal of the same type can support multiple scenarios simultaneously. For example, a terminal can support operation in both TN and NTN scenarios. In this case, the terminal needs to use waveforms corresponding to the multiple scenarios for transmission or reception (for example, different waveforms can be used in time division, frequency division, polling, or in a certain mode).

[0113] Optionally, in an embodiment of the present application, different moving speeds correspond to different waveforms, i.e., a predefined correspondence exists. The terminal may determine the waveform of the subsequent common channel based on its own moving speed and the relationship between the moving speed and the waveform. The network-side device may determine the waveform of the subsequent common channel based on the terminal's moving speed based on measurements of one or more PRACH transmissions and the terminal's moving speed and the relationship between the moving speed and the waveform.

[0114] Exemplarily, when the moving speed of the terminal exceeds a speed threshold, the default waveform of the common channel is the OTFS waveform.

[0115] Optionally, in this embodiment of the present application, different frame indices or bandwidth sizes correspond to different waveforms, i.e., a predefined correspondence exists. A terminal can obtain the frame index or bandwidth size to determine the waveform to be used for subsequent common channels. For example, when the bandwidth is greater than M, waveform 1 is used; when the bandwidth is less than N, waveform 2 is used; otherwise, waveform 3 is used.

[0116] Optionally, in an embodiment of the present application, the above-mentioned frame index or bandwidth size is obtained through any one of the following: a downlink synchronization signal, a system information block SIB1, or system information.

[0117] Optionally, in an embodiment of the present application, different spectrum deployment modes correspond to different waveforms, i.e., there is a predefined correspondence. For example, if the spectrum deployment mode is FDD, waveform 1 is used; if the spectrum deployment mode is TDD, waveform 2 is used; and if the spectrum deployment mode is full-duplex, waveform 3 is used.

[0118] Optionally, in an embodiment of the present application, the above-mentioned downlink synchronization signal includes at least one of the following: SSB, primary synchronization signal (Primary Synchronization Signal, PSS), secondary synchronization signal (Secondary Synchronization Signal, SSS), PBCH, and other signals used for downlink synchronization (such as the downlink synchronization signal or channel defined in 6G).

[0119] 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.

[0120] Optionally, in an embodiment of the present application, different random access channel configurations, resources, or preamble formats correspond to different waveforms, i.e., a predefined correspondence exists. The network-side device configures the random access channel resources or the preamble format used for the terminal; the terminal determines the downlink waveform used by the subsequent common channel based on the transmission resources or preamble format of the random access channel used and the predefined relationship.

[0121] For example, when the preamble format is a short sequence, a CP-OFDM waveform is used, and when the preamble format is a long sequence, a DFT-s-OFDM waveform is used.

[0122] Optionally, in an embodiment of the present application, the configuration or time-frequency domain position (eg, synchronization grid) of the downlink synchronization signal (eg, SSB) corresponding to different waveforms is different.

[0123] Optionally, in an embodiment of the present application, downlink synchronization signals corresponding to different waveforms are located on different synchronization grids or at different synchronization grid offset positions.

[0124] For example, the network-side device sends downlink synchronization signals of different waveforms on different synchronization grids or at synchronization grid offset positions (sync raster + offset). The terminal receives the signals using the corresponding waveforms on different synchronization grids or at synchronization grid offset positions. For example, the SSBs corresponding to different waveforms are located on different synchronization grids or at different synchronization grid offset positions. The value of offset depends on the waveform.

[0125] Optionally, in an embodiment of the present application, different second information corresponds to different waveforms, i.e., there is a predefined correspondence. If at least one channel undergoes repeated transmission, one waveform is used; if no channel undergoes repeated transmission, another waveform is used. For example, if the PRACH undergoes repeated transmission, the waveform used by the subsequent Msg3 PUSCH may be a DFT-s-OFDM waveform.

[0126] In an embodiment of the present application, there is a predefined correspondence between the second information and the waveform, that is, both the terminal and the network side can determine the target waveform used for actual transmission based on the second information. The terminal and the network side can align their understanding of the waveform currently used, thereby ensuring that the terminal and the network side can correctly receive the signal, thereby improving the signal transmission performance.

[0127] In the embodiments of the present application, the terminal or network-side device selects the most appropriate waveform for different scenarios, use cases, deployment conditions, and mobile speeds, which helps the base station / terminal to achieve the goals of increasing capacity, improving coverage, and reducing power consumption.

[0128] Optionally, in an embodiment of the present application, in combination with FIG. 2 , as shown in FIG. 4 , the above step 201 may be specifically implemented through the following steps 201b and 201c.

[0129] Step 201b: The network-side device sends third information to the terminal.

[0130] Step 201c: The terminal determines waveform-related information according to the third information from the network-side device.

[0131] In the embodiment of the present application, the third information is used to indicate waveform-related information.

[0132] Among them, the third information is at least one of the following: downlink synchronization signal, MIB, SIB, common downlink data channel, DCI, downlink control channel, Radio Network Temporary Identifier (RNTI), Medium Access Control-Control Element (MAC CE) signaling, RRC signaling, and resources in a specific time-frequency domain location.

[0133] Optionally, in an embodiment of the present application, the third information is a downlink synchronization signal; and the waveform-related information is determined by at least one of the following:

[0134] Determined by the cell identifier carried in the downlink synchronization signal (i.e., different values ​​of the cell identifier represent different waveforms);

[0135] It is determined by the DMRS sequence of the downlink synchronization signal (for example, the parameters used for initialization of the DMRS sequence include waveform-related information).

[0136] Optionally, in an embodiment of the present application, the third information is MIB; and the waveform-related information is determined by at least one of the following:

[0137] By explicitly carrying it in the MIB;

[0138] Indicated by a first subcarrier offset value carried by the MIB, the first subcarrier offset value being a subcarrier offset value between a downlink synchronization signal and a common resource block grid;

[0139] The first table is determined by a plurality of different waveforms carried by the MIB. The first table includes a CORESET configuration table of a plurality of different waveforms and a monitoring opportunity table of a first type of downlink control channel common search space.

[0140] It should be noted that the above-mentioned MIB may be a representation of system messages in 6G or any future mobile communication system.

[0141] Exemplarily, there are corresponding bits in the MIB to explicitly carry waveform-related information.

[0142] Exemplarily, the first subcarrier offset value (k SSB ) is between 0 and 5, indicating a CP-OFDM waveform; SSB When the value of is between 6 and 10, it indicates a DFT-s-OFDM waveform.

[0143] Optionally, in an embodiment of the present application, the above-mentioned first table is related to at least one of the following: carrier spacing combination and minimum bandwidth, multiplexing mode and frequency band of downlink synchronization signal and CORESET, specific subcarrier offset value, specific system frame number, and spare reserved (Spare) bit in MIB.

[0144] For example, waveform-related information is determined by defining multiple sets of CORESET#0 configuration tables for different waveforms and tables for monitoring opportunities for Type 0-PDCCH CSS. Based on a combination of information such as carrier spacing and minimum bandwidth, the multiplexing mode and frequency band of the downlink synchronization signal and CORESET, a specific subcarrier offset value, a specific system frame number, and spare reserved bits in the MIB, the CORESET#0 configuration table for the corresponding waveform and the Type 0-PDCCH CSS monitoring opportunity table can be determined.

[0145] Optionally, in an embodiment of the present application, the third information is SIB; the waveform-related information is indicated by one or more bits of signaling carried in the SIB.

[0146] Optionally, in an embodiment of the present application, the above-mentioned SIB may be one of SIB1, RMSI, other SIBs, OSI, 6G or any system message in any future mobile communication system.

[0147] Optionally, in an embodiment of the present application, the third information is a common downlink data channel; and the waveform-related information is determined by at least one of the following:

[0148] Directly carried via information bits or fields in a public downlink data channel;

[0149] Indicated by the Logical Channel Identification (LCID) or Enhanced Logical Channel Identification (eLCID) in the common downlink data channel;

[0150] Indicated by uplink grant information in a downlink random access message of a common downlink data channel;

[0151] Indicated by DMRS resources of the common downlink data channel;

[0152] Indicated by the scrambling sequence of the common downlink data channel.

[0153] Optionally, in the embodiment of the present application, the information bits or fields in the above-mentioned common downlink data channel may use existing fields or be newly introduced fields. The common downlink data channel may be Msg2 PDSCH, Msg4 PDSCH or MsgB PDSCH, etc.

[0154] It should be noted that the Msg1, Msg2, Msg3, Msg4, MsgA, MsgB, etc. mentioned in the embodiments of the present application are not only the Msg1, Msg2, Msg3, Msg4, MsgA, MsgB defined in 5G, but may also be the uplink and downlink messages sent in the random access / initial access process in 6G or future evolved mobile communication systems. They may be named other names in 6G.

[0155] Optionally, in an embodiment of the present application, the third information is DCI or a downlink control channel; and the waveform-related information is determined by at least one of the following:

[0156] Directly carried through information bits or fields in DCI or downlink control channels;

[0157] Indicated by DMRS resources of the downlink control channel;

[0158] Indicated by the scrambling sequence of the downlink control channel;

[0159] It is indicated by using a target RNTI to scramble the DCI, where the target RNTI is generated by a first RNTI and an offset, where the offset is related to the waveform, and the first RNTI includes at least one of the following: random access (RA)-RNTI, SI-RNTI, TC-RNTI, paging-RNTI (Paging-RNTI, P-RNTI), downlink random access message-RNTI, MsgB-RNTI.

[0160] Optionally, in an embodiment of the present application, the information bits or fields in the above-mentioned DCI or downlink control channel may use existing fields or be newly introduced fields. The downlink control channel may be one of Msg2 PDCCH, Msg4 PDCCH, MsgB PDCCH, SIB1 PDCCH, and PDCCH for scheduling Msg3 retransmission.

[0161] Optionally, in an embodiment of the present application, the above-mentioned third information is MAC-CE signaling or RRC signaling; the above-mentioned waveform-related information includes a waveform corresponding to the fourth information indicated by the third information, and the fourth information includes at least one of the following: frequency band or frequency domain range, transmission scenario, device moving speed, bandwidth size, spectrum deployment mode, and whether repeated transmission is performed.

[0162] 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.

[0163] Optionally, in an embodiment of the present application, the third information is a resource or opportunity at a specific time-frequency domain position; different waveforms correspond to different resources or opportunities at specific time-frequency domain positions.

[0164] The resources or opportunities at the above-mentioned specific time-frequency domain positions include at least one of the following: CORESET resources, search space, and downlink control channel monitoring opportunity.

[0165] Optionally, in the embodiment of the present application, the structures of downlink synchronization signals of different waveforms are different, and the different waveforms are determined by the structures of the downlink synchronization signals;

[0166] Alternatively, the structures of downlink synchronization signals of different waveforms are the same (the same downlink synchronization signal can support multiple waveforms), and the different waveforms are determined by one of the following methods:

[0167] Downlink synchronization signals of different waveforms are sent in a multiplexing manner (downlink synchronization signals of the same waveform are sent at fixed time-frequency domain positions), and the multiplexing manner includes any of the following: time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing;

[0168] Downlink synchronization signals of different waveforms are located in different sending cycles;

[0169] The downlink synchronization signal of the same index is sent cyclically using different waveforms, and then the downlink synchronization signals of different indexes are cyclically sent;

[0170] Downlink synchronization signals of different indexes are sent cyclically using the same waveform, and then different waveforms are cycled in sequence to send downlink synchronization signals.

[0171] For example, as shown in FIG5 , the downlink synchronization signal is taken as SSB. SSBs of different indexes are sent cyclically using the same waveform, and then different waveforms are cycled in sequence to send the SSB. In the first 5 ms, the same waveform (ie, waveform 1) is used to cycle SSBs of different indexes (for example, SSB#0 to SSB#3), and then waveforms 2 and waveform 3 are cycled in sequence to send SSBs. For example, in the second 5 ms, the same waveform (ie, waveform 2) is used to cycle SSBs of different indexes (for example, SSB#0 to SSB#3), and then the same waveform (ie, waveform 3) is used to cycle SSBs of different indexes (for example, SSB#0 to SSB#3) in the third 5 ms.

[0172] For example, as shown in FIG6 , SSBs with the same index are sent cyclically using different waveforms, and then SSBs with different indexes are sent cyclically. SSBs with the same index (e.g., SSB#0) are sent cyclically using different waveforms (e.g., waveforms 1 to 3), and then SSBs with different indexes are sent cyclically. For example, SSB#1 is sent cyclically using different waveforms (e.g., waveforms 1 to 3), then SSB#2 is sent cyclically using different waveforms (e.g., waveforms 1 to 3), and then SSB#3 is sent cyclically using different waveforms (e.g., waveforms 1 to 3), and so on.

[0173] Optionally, in an embodiment of the present application, the time-frequency domain positions of the downlink synchronization signals of the different waveforms are different, and the corresponding waveforms are used to blindly detect the downlink synchronization signals at different time-frequency domain positions;

[0174] Alternatively, the downlink synchronization signals within the same window use the same waveform, and the window is any one of the following: RAR window, MsgB response time window, and contention resolution timer.

[0175] Optionally, in an embodiment of the present application, a common downlink control channel with a different waveform is configured for each search space; or, a common downlink control channel with a different waveform is configured for each CORESET.

[0176] Optionally, in an embodiment of the present application, for full-duplex mode, the same symbol has both uplink and downlink, and the waveforms of the uplink and downlink channels may be different. For full-duplex mode, the waveform of the common channel on the same symbol is determined based on one of the following rules:

[0177] The waveform of the downlink signal or uplink signal remains the same (the waveform of the downlink or uplink signal may be pre-configured or pre-indicated);

[0178] If the allocated uplink resources or downlink resources are discontinuous, the first type of waveform (e.g., CP-OFDM waveform) is used by default;

[0179] The waveform is determined by the size of the guard band, and different guard band sizes correspond to different waveforms.

[0180] Optionally, in an embodiment of the present application, the waveform-related information is used to indicate the waveform of a signal or channel of at least one of the following:

[0181] The next signal or channel of the current transmission signal;

[0182] The next downlink signal or channel of the current transmission signal;

[0183] The next uplink signal or channel of the current transmission signal;

[0184] at least one subsequent signal or channel of the current transmission signal;

[0185] at least one subsequent downlink signal or channel of the current transmission signal;

[0186] At least one subsequent uplink signal or channel of the current transmission signal.

[0187] Optionally, in an embodiment of the present application, different channels before the terminal is in a connected state have one of the following rules:

[0188] The waveform of all downstream channels remains the same;

[0189] The waveform of all upstream channels remains the same;

[0190] There is only one default waveform for the downlink synchronization signal;

[0191] There is only one default waveform for channels before SIB1;

[0192] There is only one default waveform for the channel before the random access channel (such as PRACH or Msg1);

[0193] There is only one default waveform for the channels before Msg2.

[0194] Optionally, in an embodiment of the present application, if there are multiple methods for indicating waveform-related information and all are effective, and the indicated waveforms are different, the waveform-related information is determined based on one of the following methods:

[0195] The most recent or latest waveform-related information shall prevail;

[0196] The waveform-related information indicated implicitly shall prevail;

[0197] The waveform-related information indicated dynamically or explicitly shall prevail.

[0198] In an embodiment of the present application, the terminal can determine the target waveform used for actual transmission based on the third information indicated by the network side, that is, the network side can explicitly indicate the waveform used for actual transmission to the terminal, so that the terminal and the network side can align their understanding of the waveform currently used, thereby ensuring that the terminal and the network side can correctly receive the signal and improving the signal transmission performance.

[0199] Optionally, in the embodiment of the present application, the “terminal determines the target waveform based on waveform-related information” in the above step 202 can be specifically implemented by the following step 202a.

[0200] Step 202a: The terminal determines a target waveform for transmitting a first signal based on waveform-related information. The first signal is a signal or channel to be transmitted before the terminal is in a connected state.

[0201] Optionally, in the embodiment of the present application, the indication of the SIB1 waveform may support explicit or implicit indication in the SSB, PBCH or MIB. The indication of the Msg4 waveform may support any of the above indication methods.

[0202] For example, the first channel or signal (e.g., SSB) before entering the RRC connected state has multiple waveforms. In this case, the base station cannot send any indication information about the waveform to the terminal in advance, so the above-mentioned implicit indication method (the waveform corresponds to the first information) can be used to determine the waveform of the first channel or signal before entering the RRC connected state.

[0203] For example, there is a correspondence between the waveform used for SSB transmission and the frequency domain resources / transmission scenarios used for transmission. The network side device or terminal selects the corresponding waveform for transmission or reception on different frequency domain resources / transmission scenarios.

[0204] For example, SSBs of multiple waveforms are sent at different frequency domain positions, and the terminal uses multiple waveforms for blind detection at different synchronization grids or synchronization grid offset positions, or the frequency domain positions of multiple transmissions of downlink signals of the same waveform are fixed.

[0205] For example, SSBs of multiple waveforms are sent at different time domain positions, and the terminal uses multiple waveforms to perform blind detection at different time domain positions, or the time domain positions of multiple transmissions of the downlink signal of the same waveform are periodic.

[0206] For example, SSBs of multiple waveforms are sent in a certain mode, network-side equipment or terminals use multiple waveforms to send downlink signals multiple times in one mode, and OTFS waveforms and OFDM waveforms coexist and are sent in TDM mode or Code Division Multiplexing (CDM) mode.

[0207] For example, the waveform of the first (e.g., SSB) or first N channels / signals before entering the RRC connected state is the default, while subsequent channels or signals have multiple waveforms. In this case:

[0208] The terminal uses the default waveform to receive the SSB, and the SSB carries the indication information of the waveform used by the subsequent channel or signal. The indication information can be the third information mentioned above, such as a bit explicitly carried in the MIB, or through a specific k SSB The value of is used to indicate, etc.

[0209] After receiving the SSB, the terminal obtains the waveform indication information of the subsequent channel / signal (such as SIB1). The terminal uses the waveform determined in the waveform indication information to transmit or receive the subsequent channel / signal. The waveform indication information in the SSB can indicate only the waveform of the next channel / signal, or the waveforms of the next N channels / signals, or the waveforms of one or more subsequent downlink channels / signals, or the waveforms of one or more subsequent uplink channels / signals;

[0210] If the waveform indication information in the SSB only indicates the waveform of the next channel / signal (such as SIB1), the waveform of the channel / signal after SIB1 can be indicated in the SIB1 information.

[0211] An embodiment of the present application provides a waveform determination method, whereby a terminal can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the terminal and the network side align their understanding of the waveform currently used, thereby determining the target waveform used for actual transmission to transmit the signal or channel. In this way, it is ensured that the terminal can correctly receive the signal, thereby improving the signal transmission performance.

[0212] The present invention provides a waveform determination method, and Figure 7 shows a flowchart of the waveform determination method provided by the present invention. As shown in Figure 7, the waveform determination method provided by the present invention may include the following steps 301 and 302.

[0213] Step 301: The network-side device determines waveform-related information.

[0214] Step 302: The network-side device determines a target waveform based on waveform-related information, and uses the target waveform to perform signal or channel transmission.

[0215] In an embodiment of the present application, the above-mentioned waveform-related information is used to indicate at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission.

[0216] It should be noted that when the terminal uses the target waveform to perform signal or channel transmission, the network side device uses the target waveform to perform signal or channel reception. When the network side device uses the target waveform to perform signal or channel transmission, the terminal uses the target waveform to perform signal or channel reception.

[0217] Optionally, in an embodiment of the present application, the above step 301 can be specifically implemented through the following step 301a.

[0218] Step 301a: The network-side device determines waveform-related information based on first information, where the first information includes at least one of the following:

[0219] at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission;

[0220] Transmission scenario;

[0221] at least one of a terminal type and a terminal movement speed;

[0222] Spectrum deployment model;

[0223] Random access channel configuration, resources or preamble format;

[0224] Configuration or time-frequency domain location of downlink synchronization signals;

[0225] The second information is used to indicate whether one or more channels perform repeated transmission.

[0226] Optionally, in an embodiment of the present application, after the above step 301, the waveform determination method provided in the embodiment of the present application further includes the following step 303.

[0227] Step 303: The network-side device sends third information to the terminal, where the third information is used to indicate waveform-related information.

[0228] Among them, the above-mentioned third information is at least one of the following: downlink synchronization signal, MIB, SIB, common downlink data channel, DCI, downlink control channel, RNTI, MAC-CE signaling, RRC signaling, and resources in a specific time-frequency domain position.

[0229] It should be noted that for the relevant description of the solution for the network side device, please refer to the relevant description of the solution on the terminal side mentioned above, which will not be repeated here.

[0230] An embodiment of the present application provides a waveform determination method, whereby a network-side device can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the terminal and the network side align their understanding of the waveform currently used, thereby determining the target waveform used for actual transmission to transmit the signal or channel. In this way, it is ensured that the network side can correctly receive the signal, thereby improving the signal transmission performance.

[0231] 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.

[0232] 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.

[0233] 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 40 may include: a determination module 41 and a transmission module 42 .

[0234] Determination module 41 is configured to determine waveform-related information, which indicates at least one of the following: the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission. Determination module 41 is further configured to determine a target waveform based on the waveform-related information. Transmission module 42 is configured to perform signal or channel transmission using the target waveform determined by determination module 41.

[0235] In a possible implementation, the determining module 41 is specifically configured to determine waveform-related information based on first information, where the first information includes at least one of the following:

[0236] at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission;

[0237] Transmission scenario;

[0238] at least one of a terminal type and a terminal movement speed;

[0239] Spectrum deployment model;

[0240] Random access channel configuration, resources or preamble format;

[0241] Configuration or time-frequency domain location of downlink synchronization signals;

[0242] The second information is used to indicate whether one or more channels perform repeated transmission.

[0243] In a possible implementation, different first information corresponds to different waveforms; or, each first information corresponds to one or more waveforms.

[0244] In a possible implementation, the determining module 41 is specifically configured to determine waveform-related information based on third information from the network-side device, where the third information is used to indicate waveform-related information;

[0245] Among them, the third information is at least one of the following: downlink synchronization signal, MIB, SIB, common downlink data channel, DCI, downlink control channel, RNTI, MAC-CE signaling, RRC signaling, and resources in a specific time-frequency domain position.

[0246] In one possible implementation, the third information is a downlink synchronization signal; and the waveform-related information is determined by at least one of the following:

[0247] Determined by the cell identifier carried by the downlink synchronization signal;

[0248] Determined by the DMRS sequence of the downlink synchronization signal.

[0249] In one possible implementation, the third information is MIB; and the waveform-related information is determined by at least one of the following:

[0250] By explicitly carrying it in the MIB;

[0251] Indicated by a first subcarrier offset value carried by the MIB, the first subcarrier offset value being a subcarrier offset value between a downlink synchronization signal and a common resource block grid;

[0252] The first table is determined by a plurality of different waveforms carried by the MIB. The first table includes a CORESET configuration table of a plurality of different waveforms and a monitoring opportunity table of a first type of downlink control channel common search space.

[0253] In one possible implementation, the first table is related to at least one of the following: carrier spacing combination and minimum bandwidth, multiplexing mode and frequency band of downlink synchronization signal and CORESET, specific subcarrier offset value, specific system frame number, and spare reserved bit in MIB.

[0254] In a possible implementation, the third information is SIB; the waveform-related information is indicated by signaling of one or more bits carried in the SIB.

[0255] In one possible implementation, the third information is a common downlink data channel; and the waveform-related information is determined by at least one of the following:

[0256] Directly carried via information bits or fields in a public downlink data channel;

[0257] Indicated by LCID or eLCID in the common downlink data channel;

[0258] Indicated by uplink grant information in a downlink random access message of a common downlink data channel;

[0259] Indicated by DMRS resources of the common downlink data channel;

[0260] Indicated by the scrambling sequence of the common downlink data channel.

[0261] In one possible implementation, the third information is DCI or a downlink control channel; and the waveform-related information is determined by at least one of the following:

[0262] Directly carried through information bits or fields in DCI or downlink control channels;

[0263] Indicated by DMRS resources of the downlink control channel;

[0264] Indicated by the scrambling sequence of the downlink control channel;

[0265] The DCI is indicated by scrambling the target RNTI, where the target RNTI is generated by a first RNTI and an offset, where the offset is related to the waveform, and the first RNTI includes at least one of the following: RA-RNTI, SI-RNTI, TC-RNTI, P-RNTI, downlink random access message-RNTI, MsgB-RNTI.

[0266] In one possible implementation, the third information is MAC-CE signaling or RRC signaling; the waveform-related information includes a waveform corresponding to the fourth information indicated by the third information, and the fourth information includes at least one of the following: frequency band or frequency domain range, transmission scenario, device moving speed, bandwidth size, spectrum deployment mode, and whether repeated transmission is performed.

[0267] In one possible implementation, the third information is a resource or opportunity at a specific time-frequency domain position; different waveforms correspond to different resources or opportunities at specific time-frequency domain positions; the resource or opportunity at the specific time-frequency domain position includes at least one of the following: CORESET resources, search space, and downlink control channel monitoring opportunity.

[0268] In a possible implementation, downlink synchronization signals of different waveforms have different structures, and the different waveforms are determined by the structures of the downlink synchronization signals;

[0269] Alternatively, the structures of downlink synchronization signals of different waveforms are the same, and the different waveforms are determined by one of the following methods:

[0270] Downlink synchronization signals of different waveforms are sent in a multiplexing manner, and the multiplexing manner includes any of the following: time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing;

[0271] Downlink synchronization signals of different waveforms are located in different sending cycles;

[0272] The downlink synchronization signal of the same index is sent cyclically using different waveforms, and then the downlink synchronization signals of different indexes are cyclically sent;

[0273] Downlink synchronization signals of different indexes are sent cyclically using the same waveform, and then different waveforms are cycled in sequence to send downlink synchronization signals.

[0274] In a possible implementation, downlink synchronization signals of different waveforms have different time-frequency domain positions, and corresponding waveforms are used at different time-frequency domain positions to blindly detect downlink synchronization signals;

[0275] Alternatively, the downlink synchronization signals within the same window use the same waveform, and the window is any one of the following: RAR window, MsgB response time window, and contention resolution timer.

[0276] In a possible implementation, for full-duplex mode, the waveform of the common channel on the same symbol is determined based on one of the following rules:

[0277] Keep the same waveform as the downlink signal or uplink signal;

[0278] If the allocated uplink resources or downlink resources are discontinuous, the first type of waveform is used by default;

[0279] The waveform is determined by the size of the guard band, and different guard band sizes correspond to different waveforms.

[0280] In one possible implementation, the waveform-related information is used to indicate the waveform of a signal or channel of at least one of the following:

[0281] The next signal or channel of the current transmission signal;

[0282] The next downlink signal or channel of the current transmission signal;

[0283] The next uplink signal or channel of the current transmission signal;

[0284] at least one subsequent signal or channel of the current transmission signal;

[0285] at least one subsequent downlink signal or channel of the current transmission signal;

[0286] At least one subsequent uplink signal or channel of the current transmission signal.

[0287] In a possible implementation, different channels before the terminal is in a connected state have one of the following rules:

[0288] The waveform of all downstream channels remains the same;

[0289] The waveform of all upstream channels remains the same;

[0290] There is only one default waveform for the downlink synchronization signal;

[0291] There is only one default waveform for channels before SIB1;

[0292] There is only one default waveform for the channel before the random access channel;

[0293] There is only one default waveform for the channels before Msg2.

[0294] In a possible implementation, the determination module 41 is specifically configured to determine a target waveform for transmitting a first signal based on waveform-related information, where the first signal is a signal or channel to be transmitted before the terminal is in a connected state.

[0295] An embodiment of the present application provides a waveform determination device, which can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the waveform determination device and the network side align their understanding of the waveform currently used, thereby determining the target waveform used for actual transmission to transmit the signal or channel. In this way, it is ensured that the waveform determination device can correctly receive the signal sent by the network side device, thereby improving the signal transmission performance.

[0296] 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.

[0297] 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.

[0298] FIG9 shows a possible structural diagram of a waveform determination device involved in an embodiment of the present application. As shown in FIG9 , the waveform determination device 50 may include: a determination module 51 and a transmission module 52 .

[0299] Determination module 51 is configured to determine waveform-related information, which indicates at least one of the following: a waveform to be transmitted, a configuration corresponding to the waveform to be transmitted, whether the waveform to be transmitted has changed, and the signal or channel corresponding to the waveform to be transmitted. Determination module 51 is further configured to determine a target waveform based on the waveform-related information. Transmission module 52 is configured to perform signal or channel transmission using the target waveform determined by determination module 51.

[0300] In a possible implementation, the determining module 51 is specifically configured to determine waveform-related information based on first information, where the first information includes at least one of the following:

[0301] at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission;

[0302] Transmission scenario;

[0303] at least one of a terminal type and a terminal movement speed;

[0304] Spectrum deployment model;

[0305] Random access channel configuration, resources or preamble format;

[0306] Configuration or time-frequency domain location of downlink synchronization signals;

[0307] The second information is used to indicate whether one or more channels perform repeated transmission.

[0308] In one possible implementation, the waveform determination apparatus 50 provided in the embodiment of the present application further includes: a sending module. The sending module is configured to send third information indicating the waveform-related information to the terminal after the determination module 51 determines the waveform-related information;

[0309] Among them, the third information is at least one of the following: downlink synchronization signal, MIB, SIB, common downlink data channel, DCI, downlink control channel, RNTI, MAC-CE signaling, RRC signaling, and resources in a specific time-frequency domain position.

[0310] An embodiment of the present application provides a waveform determination device, which can determine at least one of the waveform used for transmission, the configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and the signal or channel corresponding to the waveform used for transmission, so that the terminal and the waveform determination device align their understanding of the waveform currently used, thereby determining the target waveform used for actual transmission to transmit the signal or channel. In this way, it is ensured that the waveform determination device can correctly receive the signal, thereby improving the signal transmission performance.

[0311] 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.

[0312] 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.

[0313] 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.

[0314] 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.

[0315] 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.

[0316] 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.

[0317] 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.

[0318] 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.

[0319] 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.

[0320] 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.

[0321] 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.

[0322] 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.

[0323] 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.

[0324] 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.

[0325] The network side device may further include a network interface 66, which is, for example, a Common Public Radio Interface (CPRI).

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] 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.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] 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 determines waveform-related information, where the waveform-related information is used to indicate at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; The terminal determines a target waveform based on the waveform-related information, and uses the target waveform to perform signal or channel transmission.

2. The method according to claim 1, wherein: The terminal determines waveform related information, including: The terminal determines the waveform-related information according to first information, where the first information includes at least one of the following: at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission; Transmission scene; at least one of a terminal type and a terminal movement speed; The deployment model of spectrum; Random access channel configuration, resources or preamble format; Configuration or time-frequency domain location of downlink synchronization signals; The second information is used to indicate whether one or more channels perform repeated transmission.

3. The method according to claim 2, wherein: Different first information corresponds to different waveforms; or, each first information corresponds to one or more waveforms.

4. The method according to claim 1, wherein: The terminal determines waveform related information, including: The terminal determines the waveform related information according to third information from the network side device, where the third information is used to indicate the waveform related information; Among them, the third information is at least one of the following: downlink synchronization signal, master information block MIB, system information block SIB, common downlink data channel, downlink control information DCI, downlink control channel, radio network temporary identifier RNTI, media access control control unit MAC-CE signaling, radio resource control RRC signaling, and resources at specific time-frequency domain locations.

5. The method according to claim 4, wherein: The third information is the downlink synchronization signal; The waveform related information is determined by at least one of the following: Determined by the cell identifier carried by the downlink synchronization signal; It is determined by a demodulation reference signal DMRS sequence of the downlink synchronization signal.

6. The method according to claim 4, wherein: The third information is the MIB; The waveform related information is determined by at least one of the following: By explicitly carrying it in the MIB; Indicated by a first subcarrier offset value carried by the MIB, where the first subcarrier offset value is a subcarrier offset value between a downlink synchronization signal and a common resource block grid; It is determined by a first table of multiple different waveforms carried by the MIB, where the first table includes a control resource set CORESET configuration table of the multiple different waveforms and a monitoring opportunity table of a first type of downlink control channel common search space.

7. The method according to claim 6, wherein: The first table is related to at least one of the following: carrier spacing combination and minimum bandwidth, multiplexing mode and frequency band of downlink synchronization signal and CORESET, specific subcarrier offset value, specific system frame number, and spare reserved bit in MIB.

8. The method according to claim 4, wherein: The third information is the SIB; The waveform-related information is indicated by signaling of one or more bits carried in the SIB.

9. The method according to claim 4, wherein: The third information is the common downlink data channel; The waveform related information is determined by at least one of the following: Directly carried by information bits or fields in the common downlink data channel; Indicated by a logical channel identifier LCID or an enhanced logical channel identifier eLCID in the common downlink data channel; Indicating through uplink grant information in a downlink random access message of the common downlink data channel; Indicating by means of a DMRS resource of the common downlink data channel; The method is indicated by a scrambling sequence of the common downlink data channel.

10. The method according to claim 4, wherein: The third information is the DCI or the downlink control channel; The waveform related information is determined by at least one of the following: Directly carried by the information bit or field in the DCI or the downlink control channel; Indicating by means of a DMRS resource of the downlink control channel; Indicated by a scrambling sequence of the downlink control channel; The DCI is indicated by scrambling the target RNTI, the target RNTI is generated by a first RNTI and an offset, the offset is related to the waveform, and the first RNTI includes at least one of the following: random access RA-RNTI, system information SI-RNTI, temporary cell TC-RNTI, paging P-RNTI, downlink random access message-RNTI, message MsgB-RNTI.

11. The method according to claim 4, wherein: The third information is the MAC-CE signaling or the RRC signaling; The waveform-related information includes a waveform corresponding to the fourth information indicated by the third information, and the fourth information includes at least one of the following: frequency band or frequency domain range, transmission scenario, device moving speed, bandwidth size, spectrum deployment mode, and whether to repeat transmission.

12. The method according to claim 4, wherein: The third information is the resource or opportunity of the specific time-frequency domain position; Different waveforms correspond to different resources or opportunities at specific time-frequency domain locations; The resource or opportunity at the specific time-frequency domain position includes at least one of the following: CORESET resources, search space, and downlink control channel monitoring opportunity.

13. The method according to any one of claims 2 to 12, wherein: Downlink synchronization signals of different waveforms have different structures, and different waveforms are determined by the structures of the downlink synchronization signals; Alternatively, the structures of downlink synchronization signals of different waveforms are the same, and the different waveforms are determined by one of the following methods: Downlink synchronization signals of different waveforms are sent in a multiplexing manner, and the multiplexing manner includes any one of the following: time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing; Downlink synchronization signals of different waveforms are located in different sending cycles; The downlink synchronization signal of the same index is sent cyclically using different waveforms, and then the downlink synchronization signals of different indexes are cyclically sent in turn; Downlink synchronization signals of different indexes are sent cyclically using the same waveform, and then different waveforms are cycled in turn to send the downlink synchronization signals.

14. The method according to any one of claims 2 to 12, wherein: Downlink synchronization signals of different waveforms have different time-frequency domain positions, and corresponding waveforms are used to blindly detect downlink synchronization signals at different time-frequency domain positions; Alternatively, the downlink synchronization signal in the same window uses the same waveform, and the window is any one of the following: a random access response RAR window, a MsgB response time window, and a contention resolution timer.

15. The method according to any one of claims 1 to 14, wherein: For full-duplex mode, the waveform of the common channel on the same symbol is determined based on one of the following rules: Keep the same waveform as the downlink signal or the uplink signal; If the allocated uplink resources or downlink resources are not continuous, the first type of waveform is used by default; The waveform is determined by the size of the guard band, and different sizes of guard bands correspond to different waveforms.

16. The method according to any one of claims 1 to 15, wherein: The waveform-related information is used to indicate the waveform of a signal or channel of at least one of the following: The next signal or channel of the current transmission signal; The next downlink signal or channel of the current transmission signal; The next uplink signal or channel of the current transmission signal; at least one subsequent signal or channel of the current transmission signal; at least one subsequent downlink signal or channel of the current transmission signal; At least one subsequent uplink signal or channel of the current transmission signal.

17. The method according to any one of claims 1 to 16, wherein: Before the terminal is in the connected state, different channels have one of the following rules: The waveform of all downstream channels remains the same; The waveform of all upstream channels remains the same; There is only one default waveform for the downlink synchronization signal; There is only one default waveform for channels before SIB1; There is only one default waveform for the channel before the random access channel; There is only one default waveform for the channels before Msg2.

18. The method according to any one of claims 1 to 17, wherein: The terminal determines a target waveform based on the waveform-related information, including: The terminal determines a target waveform used for transmitting a first signal based on the waveform-related information, where the first signal is a signal or channel to be transmitted before the terminal is in a connected state.

19. A waveform determination method, comprising: The network side device determines waveform related information, where the waveform related information is used to indicate at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; The network side device determines a target waveform based on the waveform-related information, and uses the target waveform to perform signal or channel transmission.

20. The method according to claim 19, wherein: The network side device determines waveform related information, including: The network-side device determines the waveform-related information according to first information, where the first information includes at least one of the following: at least one of a frequency domain resource, a frame index, and a bandwidth size used for transmission; Transmission scene; at least one of a terminal type and a terminal movement speed; The deployment model of spectrum; Random access channel configuration, resources or preamble format; Configuration or time-frequency domain location of downlink synchronization signals; The second information is used to indicate whether one or more channels perform repeated transmission.

21. The method according to claim 19, wherein: After the network side device determines the waveform related information, the method further includes: The network side device sends third information to the terminal, where the third information is used to indicate the waveform related information; The third information is at least one of the following: downlink synchronization signal, MIB, SIB, common downlink data channel, DCI, downlink control channel, RNTI, MAC-CE signaling, RRC signaling, and resources at a specific time-frequency domain location.

22. A waveform determination device, comprising: Determine the module and the transmission module; The determining module is used to determine waveform related information, where the waveform related information is used to indicate at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; The determination module is further used to determine a target waveform based on the waveform related information; The transmission module is used to perform signal or channel transmission using the target waveform determined by the determination module.

23. A waveform determination device, comprising: Determine the module and the transmission module; The determining module is used to determine waveform related information, where the waveform related information is used to indicate at least one of the following: a waveform used for transmission, a configuration corresponding to the waveform used for transmission, whether the waveform used for transmission has changed, and a signal or channel corresponding to the waveform used for transmission; The determination module is further used to determine a target waveform based on the waveform related information; The transmission module is used to perform signal or channel transmission using the target waveform determined by the determination module.

24. 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 18 are implemented.

25. 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 19 to 21 are implemented.

26. 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 18, or implements the steps of the waveform determination method as claimed in any one of claims 19 to 21.

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