Method and device for determining transmission waveform

Abstract

The embodiment of the invention discloses a method and a device for determining a transmission waveform, which can be applied to a communication system, and the method comprises the step of determining the transmission waveform of a transmission channel of terminal equipment according to the indication of network equipment or the agreement of a protocol. In the technical scheme, under the condition that the condition of the transmission waveform of the channel is changed, the terminal equipment can re-determine the adaptive transmission waveform for the channel according to the indication of the network equipment or the agreement of a protocol. Therefore, under the condition that the channel changes, the transmission waveform corresponding to the channel can be adjusted in time, and the adaptability of the transmission waveform and the channel change is improved, so that the channel and the transmission waveform are matched in time, and the system performance is improved.

Description

A method and device for determining a transmission waveform Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining a transmission waveform. Background Art

[0002] With the advancement of communication technology, existing waveforms are unable to achieve ultra-high speeds, ultra-low latency, and ultra-wide bandwidth, making it difficult to meet demands beyond communications services. While introducing more waveforms to accommodate diverse services, adapting the channel to the transmission waveform in systems with multiple waveforms, due to the variability of channel conditions, has become a pressing issue.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a method and apparatus for determining a transmission waveform, which can be applied in the field of communications to solve the problem that when the channel changes, the transmission waveform corresponding to the channel cannot be adjusted in time, resulting in failure to adapt to the channel changes, so that the channel and the transmission waveform can be adapted in time to improve system performance.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a transmission waveform, the method comprising:

[0006] Determine the transmission waveform of the terminal device's transmission channel according to network device instructions or protocol agreements.

[0007] In this technical solution, when a channel's transmission waveform conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. As a result, when the channel changes, the corresponding transmission waveform can be adjusted promptly, improving the adaptability of the transmission waveform to the channel changes, enabling timely adaptation of the channel and the transmission waveform, thereby improving system performance.

[0008] In a second aspect, an embodiment of the present application provides another method for determining a transmission waveform, the method comprising:

[0009] Waveform indication information is sent to a terminal device, wherein the waveform indication information is used to determine a transmission waveform of a transmission channel of the terminal device.

[0010] In a third aspect, an embodiment of the present application provides a communication device that has the function of implementing some or all of the network devices in the method described in the first aspect above. For example, the functions of the communication device may have the functions of some or all of the embodiments in this application, or may have the function of implementing any one of the embodiments in this application separately. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0011] In one implementation, the communication device may include a transceiver module and a processing module, wherein the processing module is configured to support the communication device in performing the corresponding functions of the above-mentioned method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module and stores computer programs and data necessary for the communication device.

[0012] As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

[0013] In a fourth aspect, an embodiment of the present application provides another communication device that has some or all of the functions of the terminal device in the method example described in the second aspect above. For example, the functions of the communication device may have the functions of some or all of the embodiments in this application, or may have the functions of implementing any one of the embodiments in this application separately. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0014] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions of the above-described method. The transceiver module is configured to support communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores computer programs and data necessary for the communication device.

[0015] In a fifth aspect, an embodiment of the present application provides a communication device, which includes a processor. When the processor calls a computer program in a memory, it executes the method described in the first aspect above.

[0016] In a sixth aspect, an embodiment of the present application provides a communication device, which includes a processor. When the processor calls a computer program in a memory, it executes the method described in the second aspect above.

[0017] In the seventh aspect, an embodiment of the present application provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

[0018] In an eighth aspect, an embodiment of the present application provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

[0019] In the ninth aspect, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the first aspect above.

[0020] In the tenth aspect, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0021] In the eleventh aspect, an embodiment of the present application provides a system for determining a transmission waveform, the system comprising the communication device described in the third aspect and the communication device described in the fourth aspect, or the system comprising the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system comprising the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system comprising the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0022] In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions used by the above-mentioned network device, and when the instructions are executed, the network device executes the method described in the first aspect.

[0023] In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the second aspect.

[0024] In a fourteenth aspect, the present application also provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0025] In a fifteenth aspect, the present application also provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0026] In a sixteenth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a network device in implementing the functions described in the first aspect, such as determining or processing at least one of the data and information described in the above method. In one possible design, the chip system further comprises a memory for storing computer programs and data necessary for the network device. The chip system may consist of a chip alone or may include a chip and other discrete components.

[0027] In a seventeenth aspect, the present application provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip or can include a chip and other discrete devices.

[0028] In an eighteenth aspect, the present application provides a computer program which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0029] In a nineteenth aspect, the present application provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0031] FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0032] FIG2 is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application;

[0033] FIG3 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0034] FIG4 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0035] FIG5 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0036] FIG6 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0037] FIG7 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0038] FIG8 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0039] FIG9 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0040] FIG10 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0041] FIG11 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0042] FIG12 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0043] FIG13 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0044] FIG14 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0045] FIG15 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0046] FIG16 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0047] FIG17 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0048] FIG18 is a flow chart of another method for determining a transmission waveform provided in an embodiment of the present application;

[0049] FIG19 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0050] FIG20 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0051] FIG21 is a schematic structural diagram of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0053] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0054] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" For the purpose of brevity and ease of understanding, the terms used herein when characterizing size relationships are "greater than" or "less than", "higher than" or "lower than". However, for those skilled in the art, it can be understood that the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to", and "lower than" also covers the meaning of "lower than or equal to".

[0055] In order to better understand the method for determining a transmission waveform disclosed in an embodiment of the present application, the communication system to which the embodiment of the present application is applicable is first described below.

[0056] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. The communication system may include, but is not limited to, a network device and a terminal device. The number and form of devices shown in Figure 1 are for example purposes only and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more network devices and two or more terminal devices may be included. The communication system shown in Figure 1 includes, for example, a network device 101 and a terminal device 102.

[0057] It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example, the third generation (3G) universal mobile telecommunications system (UMTS) long term evolution (LTE) system, the fifth generation (5G) mobile communication system, the 5G new radio (NR) system, the sixth generation (6G) mobile communication system, or other future new mobile communication systems.

[0058] The network device 101 in the embodiment of the present application is an entity on the network side for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present application can be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the network device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0059] The terminal device 102 in the embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device can be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

[0060] It can be understood that the communication system described in the embodiment of the present application is for the purpose of more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present application is also applicable to similar technical problems.

[0061] It should be noted that the method for determining the transmission waveform provided in any embodiment of the present application can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with any technical solution in the relevant technology.

[0062] The following is a detailed introduction to the method and device for determining the transmission waveform provided by the present application with reference to the accompanying drawings.

[0063] Please refer to Figure 2, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. As shown in Figure 2, the method may include but is not limited to the following steps:

[0064] S201, determining a transmission channel of a terminal device.

[0065] In some implementations, the terminal device can use the transmission beam of the currently used transmission channel to send and receive information or data, and the transmission waveform of the beam may include but is not limited to Frequency Modulated Continuous Wave (FMCW) waveform, Orthogonal Time Frequency and Space (OTFS) waveform, Orthogonal Frequency Division Multiplexing (OFDM) waveform, Single Carrier OFDM (SC-OFDM), Cyclic Prefix OFDM (CP-OFDM) and other waveforms.

[0066] In some implementations, different application scenarios include but are not limited to ultra-high-speed mobile scenarios, perception scenarios, communication business scenarios, etc.

[0067] In an embodiment of the present application, channels may include but are not limited to a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical broadcast channel (PBCH), a physical random access channel (PRACH), and the like.

[0068] In some implementations, the transmission channel used in ultra-high-speed mobility scenarios may use an OTFS waveform, the transmission channel used in sensing scenarios may use an FMCW waveform, and the transmission channel used in communication service scenarios may use an SC-OFDM waveform or a CP-OFDM waveform.

[0069] In some implementations, the terminal device may support a protocol agreement to determine the transmission waveform of the transmission channel.

[0070] In some implementations, the terminal device may support determining the transmission waveform of the transmission channel according to an instruction from the network device. In some embodiments, the network device may send an instruction to the terminal so that the terminal determines the transmission waveform of the transmission channel.

[0071] In some implementations, the terminal device may support protocol conventions and network device instructions to determine the transmission waveform of the transmission channel.

[0072] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0073] S202: If the terminal device supports the protocol agreement and the network device instruction to determine the transmission waveform, the terminal device receives the network device instruction. If the network device instruction is received, the terminal device determines the transmission waveform of the transmission channel according to the network device instruction.

[0074] In some implementations, when determining the transmission waveform of a transmission channel, determining the transmission waveform of the transmission channel based on a network instruction has a higher priority than determining the transmission waveform of the transmission channel based on a protocol agreement.

[0075] In the case of receiving the network device instruction, the transmission waveform of the transmission channel may be determined preferentially according to the network device instruction.

[0076] S203: If no network device instruction is received, determine the transmission waveform of the transmission channel according to the protocol.

[0077] In some implementations, when no indication is received from the network device, the transmission waveform of the transmission channel may be determined by agreement.

[0078] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0079] Please refer to Figure 3, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. As shown in Figure 3, the method may include but is not limited to the following steps:

[0080] S301, determining a transmission channel of a terminal device.

[0081] In the embodiment of the present application, the implementation method of step S301 can be implemented by any method in the various embodiments of the present application, which is not limited here and will not be repeated.

[0082] S302: If the terminal device supports different methods of determining the transmission waveform of the transmission channel, determine the priorities of the different methods.

[0083] In some implementations, the terminal device may support protocol agreement to determine the transmission waveform of the transmission channel, which may be referred to as Method 1.

[0084] In some implementations, the network device may send first waveform indication information to the terminal device via system signaling, and the terminal device may determine the transmission waveform of the transmission channel based on the first waveform indication information. This method may be referred to as Method 2.

[0085] In some implementations, the network device may send second waveform indication information to the terminal device via UE-specific signaling, and the terminal device may determine the transmission waveform of the transmission channel based on the second waveform indication information. This method may be referred to as method 3.

[0086] S303: Determine a transmission waveform of the transmission channel according to the priority.

[0087] In some implementations, the priority of method 3 is higher than that of method 2, and the priority of method 2 is higher than that of method 1.

[0088] When the second waveform indication information of mode 3 is received, the transmission waveform of the transmission channel is determined based on the second waveform indication information.

[0089] When the second waveform indication information of mode 3 is not received but the first waveform indication information of mode 2 is received, the transmission waveform of the transmission channel is determined according to the first waveform indication information.

[0090] If the first waveform indication information of mode 2 is not received, the transmission waveform of the transmission channel is determined according to the protocol agreement.

[0091] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0092] Please refer to Figure 4, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 4, the method may include but is not limited to the following steps:

[0093] S401: Determine a transmission waveform of a transmission channel according to a network device instruction or a protocol agreement.

[0094] In actual applications, the channel used by terminal devices for transmission may change due to electromagnetic interference, path loss, multipath effects, or business needs. When the channel changes, in order to better transmit data or information, it is necessary to redefine the transmission waveform for the channel.

[0095] In some embodiments, the transmission waveform of the transmission channel can be determined according to the protocol. For example, the transmission channel used in ultra-high-speed mobility scenarios can use an OTFS waveform, and the transmission channel used in perception scenarios can use an FMCW waveform. The transmission channel used in communication service scenarios can use an SC-OFDM waveform or a CP-OFDM waveform.

[0096] In some embodiments, the terminal device may determine the transmission waveform of the transmission channel according to an instruction from the network device. In some embodiments, the network device may send an instruction to the terminal so that the terminal determines the transmission waveform of the transmission channel.

[0097] In some implementations, the terminal device may receive waveform indication information from the network device, and determine the transmission waveform of the transmission channel according to the waveform indication information.

[0098] Optionally, the terminal device may receive waveform indication information sent by the network device via system signaling. System signaling may include but is not limited to a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a master information block (MIB), and a system information block (SIB).

[0099] Optionally, the terminal device may receive waveform indication information sent by the network device via user equipment (UE) dedicated signaling. UE dedicated signaling may include but is not limited to radio resource control (RRC), media access control element (MAC CE), and downlink control information (DCI).

[0100] In some implementations, the terminal device may also determine the transmission waveform of the transmission channel based on protocol agreement.

[0101] In the embodiment of the present application, the channel may include but is not limited to PDSCH, PDCCH, PUCCH, PUSCH, PBCH, PRACH, etc.

[0102] It should be noted that the transmission waveform refers to the shape or waveform of the signal transmitted through the channel in the communication system. These signals can be digital or analog signals, and can be a single-frequency sine wave or a complex waveform composed of multiple frequencies.

[0103] Optionally, the transmission waveform may include but is not limited to FMCW waveform, OTFS waveform, OFDM waveform, SC-OFDM, CP-OFDM and other waveforms.

[0104] In some implementations, if the terminal device supports both protocol agreement and network device indication for determining the transmission waveform, the terminal device determines the transmission waveform for the transmission channel based on the network device indication. Optionally, it can be pre-configured or agreed that the priority of determining the transmission waveform for the transmission channel based on the network indication is higher than the priority of determining the transmission waveform for the transmission channel based on the protocol agreement.

[0105] When the terminal device receives the waveform indication information sent by the network device, the priority is based on the waveform indication information to determine the transmission waveform of the transmission channel. When the terminal device does not receive the waveform indication information sent by the network device, it can determine the transmission waveform of the transmission channel based on the protocol agreement. Optionally, the terminal device can determine the target carrier frequency of the transmission channel in advance based on the mapping relationship between the carrier frequency and the waveform agreed upon in the protocol, and further, based on the target carrier frequency of the channel and the mapping relationship between the carrier frequency and the waveform, determine the waveform that has a mapping relationship with the target carrier frequency, and determine the waveform that has a mapping relationship with the target carrier frequency as the transmission waveform of the channel. That is to say, when determining the transmission waveform of the transmission channel, the priority of determining the transmission waveform of the transmission channel based on the network indication is higher than the priority of determining the transmission waveform of the transmission channel based on the protocol agreement.

[0106] It should be understood that, prior to step 402, the method may further include step S401, determining the transmission channel of the terminal device. For example, after the terminal device determines the transmission channel for the current application scenario, the terminal device may determine the waveform corresponding to the current transmission channel by receiving instructions from the network device or through a protocol agreement. Alternatively, the terminal device may also determine the transmission channel to be used in application scenarios for a period of time in the future. This has been described in detail in the previous embodiments and will not be repeated here.

[0107] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0108] Please refer to Figure 5, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 5, the method may include but is not limited to the following steps:

[0109] S501: Determine a target carrier frequency of a transmission channel of a terminal device.

[0110] In some implementations, a pre-established relationship between channels and carrier frequencies is established. For example, PDSCH, PDCCH, PUCCH, PUSCH, PBCH, and PRACH each have a corresponding target carrier frequency. When a channel changes, the terminal device determines the waveform corresponding to the channel being transmitted based on this relationship.

[0111] For example, in some embodiments, the target carrier frequency of the transmission channel used by the terminal device in the current application scenario can be determined. In some embodiments, the target carrier frequency of the transmission channel used by the terminal device in the application scenario for a period of time in the future can be determined.

[0112] S502 : Determine a transmission waveform of a transmission channel according to a target carrier frequency and a mapping relationship between the carrier frequency and the waveform.

[0113] In some implementations, the mapping relationship between the carrier frequency and the waveform may be agreed upon according to a protocol.

[0114] After determining the target carrier frequency of the channel, the mapping relationship between the carrier frequency and the waveform can be queried based on the target carrier frequency to obtain a waveform that has a mapping relationship with the target carrier frequency, and the waveform that has a mapping relationship with the target carrier frequency can be determined as the transmission waveform of the channel.

[0115] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0116] Please refer to Figure 6, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 6, the method may include but is not limited to the following steps:

[0117] S601: Receive waveform indication information sent by a network device.

[0118] In some implementations, the terminal device may receive waveform indication information sent by the network device via system signaling. The system signaling may include but is not limited to PSS signaling, SSS signaling, MIB signaling, and SIB signaling.

[0119] In some implementations, the terminal device may receive waveform indication information sent by the network device via UE-specific signaling. The UE-specific signaling may include but is not limited to RRC signaling, MAC CE signaling, and DCI signaling.

[0120] In some implementations, the waveform indication information may be used to indicate a waveform index value, based on which a transmission waveform of a transmission channel is determined.

[0121] In some implementations, the terminal device may pre-establish a mapping table between waveform index values ​​and transmission waveforms based on protocol agreements. In some implementations, the terminal device may determine the mapping table between waveform index values ​​and transmission waveforms based on network instructions. In other words, the terminal device may receive the mapping table sent by the network device. For example, the terminal device may receive configuration information of the mapping table sent by the network device via UE-specific signaling, and the terminal device may determine the mapping table based on the configuration information.

[0122] In some implementations, a mapping table between waveform index values ​​and transmission waveforms may be as shown in Table 1.

[0123] It should be understood that each element in Table 1 exists independently. These elements are illustratively listed in the same table, but this does not necessarily mean that all elements in the table must be present simultaneously as shown. The value of each element is independent of the value of any other element in Table 1. Therefore, those skilled in the art will understand that the value of each element in Table 1 represents an independent embodiment.

[0124] For example, the waveform indication information indicates "3", and based on the mapping table shown in Table 1, it is determined that the transmission waveform of the transmission channel is an OTFS waveform.

[0125] In some implementations, the waveform indication information may be a waveform index. Optionally, one bit may correspond to two transmission waveforms, e.g., log2N bits may correspond to N transmission waveforms. Alternatively, the number or position of blank bits occupied by the waveform indication information may be determined by a protocol or indicated by a network device. Alternatively, the number of bits occupied by the waveform indication information may be determined by the number of candidate transmission waveforms. For example, log2(N) bits may be added for the waveform indication information, where N represents the number of candidate transmission waveforms.

[0126] For example, for N waveforms, 2 bits can be determined by log2N. These 2 bits can be used to indicate the waveform index. For example, "00" can indicate an SC-OFDM waveform; "01" can indicate a CP-OFDM waveform; "10" can indicate an OTFS waveform; and "11" can indicate an FMCW waveform.

[0127] In some implementations, the waveform indication information may reuse existing information or an existing information field, or may be carried in a newly added information field.

[0128] Optionally, the waveform indication information may be carried as newly added information in an existing information field of system signaling or UE-specific signaling. The waveform indication information may be carried on the blank bits reserved in the existing information field, and the terminal device may obtain the waveform indication information from the blank bits. The existing information field used to carry the waveform indication information may be agreed upon by the protocol, or may be indicated by a network device. Optionally, the number or position of blank bits occupied by the waveform indication information may also be agreed upon by the protocol, or indicated by a network device. Optionally, the number of bits occupied by the waveform indication information may be determined by the number of candidate transmission waveforms. For example, log2(N) bits may be added for the waveform indication information, where N represents the number of candidate transmission waveforms.

[0129] Optionally, the waveform indication information can reuse existing information carried in system signaling or UE-specific signaling. That is, while retaining the original indication function of the existing information, a new waveform indication function is defined for the existing information. The terminal device determines the original indication function based on the existing information, and can also associate the existing information with the waveform indication information, that is, the information domain indication information can be used for both waveform indication and original information indication. The existing information used to indicate the waveform indication information can be agreed upon by the protocol or indicated by the network device.

[0130] Optionally, the waveform indication information can also be carried in a new information field in the system signaling. The waveform indication information can be carried in the new information field, and the terminal device can obtain the waveform indication information from the new information field. The new information field used to carry the waveform indication information can be specified by the protocol or indicated by the network device.

[0131] S602: Determine a transmission waveform of a transmission channel according to the waveform indication information.

[0132] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0133] In some implementations, the waveform indication information is used to indicate a waveform index value. The terminal device can receive the waveform indication information sent by the network device, and based on the waveform index value indicated by the waveform indication information, query the mapping relationship between the waveform index value and the transmission waveform to determine the transmission waveform of the transmission channel.

[0134] Optionally, one bit can correspond to two transmission waveforms, for example, log2N bits can correspond to N transmission waveforms. Alternatively, the number or position of blank bits occupied by the waveform indication information can be determined by the protocol or indicated by the network device. Alternatively, the number of bits occupied by the waveform indication information can be determined by the number of candidate transmission waveforms. For example, log2(N) bits can be added for the waveform indication information, where N represents the number of candidate transmission waveforms.

[0135] For example, for N waveforms, 2 bits can be determined by log2N. These 2 bits can be used to indicate the waveform index. For example, "00" can indicate an SC-OFDM waveform; "01" can indicate a CP-OFDM waveform; "10" can indicate an OTFS waveform; and "11" can indicate an FMCW waveform.

[0136] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0137] Please refer to Figure 7, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 7, the method may include but is not limited to the following steps:

[0138] S701: Receive first waveform indication information sent by a network device through system signaling.

[0139] In some implementations, system signaling may include, but is not limited to, PSS signaling, SSS signaling, MIB signaling, SIB signaling, etc.

[0140] In some implementations, the waveform indication information in the system signaling can be existing information or an existing information field, or can be newly added information carried in a newly added information field. The waveform indication information in the system signaling can be used as the first waveform indication information.

[0141] S702: Determine a transmission waveform of a transmission channel according to the first waveform indication information.

[0142] In the embodiment of the present application, the transmission channel is the transmission channel used in the current application scenario of the terminal device.

[0143] In some implementations, after obtaining the first waveform indication information, the transmission waveform of the transmission channel can be determined based on the first waveform indication information. Optionally, the first waveform indication information can be a waveform index value, or the first waveform indication information can be a waveform bitmap.

[0144] In embodiments of the present application, when channel conditions change, a terminal device can receive system signaling sent by a network device and, based on the first waveform indication information in the system signaling, re-determine an adapted transmission waveform for the channel. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing for timely adaptation of the channel and transmission waveform, thereby improving system performance.

[0145] Please refer to Figure 8, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 8, the method may include but is not limited to the following steps:

[0146] S801: Receive first waveform indication information sent by a network device via a synchronization signal sequence.

[0147] In one implementation, the terminal device may receive a synchronization signal sequence sent by the network device via a first fixed transmission waveform, wherein the first fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0148] In some implementations, the synchronization signal sequence may be a PSS sequence or an SSS sequence.

[0149] In some implementations, the terminal device may receive the first waveform indication information obtained by the network device through a PSS sequence or an SSS sequence, that is, the first waveform indication information may be carried in the PSS sequence or the SSS sequence.

[0150] In some implementations, the first waveform indication information is existing information in a synchronization signal sequence. Optionally, the first waveform indication information can be an initialization parameter in a PSS sequence or an SSS sequence, and the initialization parameter of the PSS sequence or the SSS sequence indicates relevant information of the transmission waveform.

[0151] Optionally, the initialization parameter for waveform indication in the PSS sequence or SSS sequence can have N possible values, and the N possible values ​​can indicate K transmission waveforms. That is, the mapping relationship between the transmission waveforms in the N values ​​can be predetermined. Furthermore, through the specific value of the initialization parameter in the PSS or SSS sequence, the mapping relationship between the transmission waveforms in the N values ​​is queried, and the transmission waveform corresponding to the initialization parameter is determined. Among them, the value of the initialization parameter for waveform indication in the PSS sequence or SSS sequence does not include the parameter value used to indicate the Cell-ID.

[0152] In some implementations, the first waveform indication information may be newly added information in the synchronization signal sequence, and the newly added information is used as the first waveform indication information. Optionally, the first waveform indication information may be a newly added parameter in a PSS sequence or an SSS sequence, and the relevant information of the transmission waveform is indicated by the newly added parameter of the PSS sequence or the SSS sequence. Optionally, a blank bit is added to the PSS sequence or the SSS sequence, and a waveform indication parameter is added to the blank bit. The transmission waveform of the transmission channel is indicated to the terminal device by adding a waveform indication parameter to the PSS sequence or the SSS sequence. Accordingly, after the terminal device receives the PSS sequence or the SSS sequence, it can obtain the newly added waveform indication parameter and determine the transmission waveform of the transmission channel. For example, the newly added waveform indication parameter may be a waveform index value. Optionally, the number of bits occupied by the newly added waveform indication parameter can be determined by the number of candidate transmission waveforms. For example, log2(N) bits can be added for waveform indication information, where N represents the number of candidate transmission waveforms.

[0153] S802: Determine a transmission waveform of a transmission channel according to first waveform indication information.

[0154] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0155] In some implementations, after obtaining the first waveform indication information, the transmission waveform of the transmission channel can be determined based on the first waveform indication information. Optionally, the first waveform indication information can be a waveform index value, or the first waveform indication information can be a waveform bitmap.

[0156] In the embodiment of the present application, when channel conditions change, the terminal device can re-determine the transmission waveform adapted for the channel based on the first waveform indication information in the PSS sequence or SSS sequence sent by the network device. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0157] Please refer to Figure 9, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 9, the method may include but is not limited to the following steps:

[0158] S901: Receive first waveform indication information sent by a network device through MIB or SIB.

[0159] In some implementations, the terminal device may receive the MIB sent by the network device via a second fixed transmission waveform, wherein the second fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0160] In some implementations, the terminal device may receive the SIB sent by the network device via a third fixed transmission waveform, wherein the third fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0161] Optionally, the second fixed transmission waveform and the third fixed transmission waveform may be the same or different.

[0162] In some implementations, the terminal device may receive a MIB or SIB sent by a network device, and the MIB or SIB may carry the first waveform indication information.

[0163] In some implementations, the second waveform indication information may be information carried in a newly added information field in the MIB or SIB.

[0164] Optionally, a waveform indication field can be added to the MIB or SIB. This waveform indication field is a newly added information field. By adding the waveform indication field to the MIB or SIB, the transmission waveform of the transmission channel is indicated to the terminal device. For example, the newly added waveform indication field can be used to indicate a waveform index value. Optionally, the number of bits occupied by the newly added waveform indication field can be determined by the number of candidate transmission waveforms. For example, log2(N) bits can be added for waveform indication information, where N represents the number of candidate transmission waveforms.

[0165] S902: Determine a transmission waveform of a transmission channel according to the first waveform indication information.

[0166] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0167] In some implementations, after obtaining the first waveform indication information, the transmission waveform of the transmission channel can be determined based on the first waveform indication information. Optionally, the first waveform indication information can be a waveform index value, or the first waveform indication information can be a waveform bitmap.

[0168] In embodiments of the present application, when channel conditions change, the terminal device can re-determine an adapted transmission waveform for the channel based on the first waveform indication information carried in the MIB or SIB sent by the network device. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0169] Please refer to Figure 10, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 10, the method may include but is not limited to the following steps:

[0170] S1001: Receive second waveform indication information sent by a network device through UE-dedicated signaling.

[0171] In some implementations, the terminal device and the network device perform an initial access process and a random access process through a fourth fixed transmission waveform, so that the terminal device can receive user device-specific signaling sent by the network device through the fourth fixed transmission waveform, wherein the fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0172] It should be noted that the first fixed waveform, the second fixed waveform, the third fixed waveform and the fourth fixed waveform are determined by the network devices through a protocol agreement, and may be the same waveform or different waveforms.

[0173] In some implementations, UE-specific signaling may include, but is not limited to, RRC signaling, MAC CE signaling, and DCI signaling.

[0174] In some implementations, the second waveform indication information may reuse existing information or an existing information field in the UE-dedicated signaling, or the second waveform indication information may also be newly added information in a newly added information field of the UE-dedicated signaling.

[0175] Optionally, the second waveform indication information may reuse existing information carried in UE-specific signaling. That is, while retaining the original indication function of the existing information, a new waveform indication function is defined for the existing information. The terminal device determines the original indication function based on the existing information and may also determine the waveform indication information based on the existing information. The existing information used to indicate the waveform indication information may be determined by a protocol agreement or indicated by a network device.

[0176] Optionally, the second waveform indication information may carry newly added information in an existing information field of the UE-dedicated signaling. The second waveform indication information may be carried on the blank bits reserved in the existing information field, and the terminal device may obtain the second waveform indication information from the blank bits. The existing information field used to indicate the waveform indication information may be agreed upon by the protocol, or may be indicated by a network device. Optionally, the number of bits or positions occupied by the second waveform indication information may also be agreed upon by the protocol, or indicated by a network device. Optionally, the number of bits occupied by the second waveform indication information may be determined by the number of candidate transmission waveforms. For example, log2(N) bits may be added for the waveform indication information, where N represents the number of candidate transmission waveforms.

[0177] S1002: Determine a transmission waveform of a transmission channel according to the second waveform indication information.

[0178] In the embodiment of the present application, the transmission channel is the transmission channel used in the current application scenario of the terminal device.

[0179] In some implementations, after obtaining the second waveform indication information, the transmission waveform of the transmission channel can be determined based on the second waveform indication information. Optionally, the second waveform indication information can be a waveform index value, or the second waveform indication information can be a waveform bitmap.

[0180] In some implementations, if the terminal device receives first waveform indication information in system signaling sent by the network device and receives second waveform indication information in UE-specific signaling, the terminal device determines the transmission waveform based on the second waveform indication information.

[0181] In some implementations, if the terminal device receives the first waveform indication information but does not receive the second waveform indication information, the terminal device determines the transmission waveform based on the first waveform indication information.

[0182] For example, if the waveform does not change during the current time period and, in order to save resources, the UE-specific signaling does not indicate the waveform, in this case the terminal device does not receive the second waveform indication information in the UE-specific signaling. The terminal device then determines the transmission waveform based on the first waveform indication information in the system signaling. It is understandable that the priority of the second waveform indication information is higher than the priority of the first waveform indication information.

[0183] In the embodiments of the present application, based on channel changes, waveform indication information can be provided to the terminal device via dedicated signaling from the network device to the user device, thereby determining the transmission waveform of the transmission channel. Thus, when multiple waveforms coexist, the transmission waveform changes based on channel changes, resolving the waveform indication issue when the transmission waveform changes.

[0184] Please refer to Figure 11, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 11, the method may include but is not limited to the following steps:

[0185] S1101: Receive first indication information sent by a network device through RRC signaling, and determine one or more candidate transmission waveforms corresponding to a transmission channel according to the first indication information.

[0186] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0187] In some implementations, the terminal device may receive first indication information sent by the network device via RRC signaling. The terminal device may determine, based on the first indication information, one or more candidate transmission waveforms configured by the network device for the transmission channel.

[0188] S1102: Receive second indication information sent by a network device through DCI signaling, and determine a transmission waveform of a transmission channel according to the second indication information.

[0189] The transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0190] In some implementations, a terminal device receives DCI signaling sent by a network device, where the DCI signaling carries second indication information, where the second indication information is used to indicate a transmission waveform of a transmission channel, where the transmission waveform of the indicated channel is one of one or more candidate transmission waveforms configured through RRC.

[0191] In some implementations, the indication information for indicating the transmission waveform may reuse an existing information field in RRC signaling or DCI signaling. Alternatively, the first indication information may reuse an existing information field in RRC signaling. Alternatively, the second indication information may reuse an existing information field in DCI signaling.

[0192] In some implementations, the existing information domain used to carry the first indication information and / or the second indication information may be agreed upon by a protocol or indicated by a network device.

[0193] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of RRC signaling or DCI signaling. Optionally, the first indication information may be carried in a newly added information field of RRC signaling. The second indication information may be carried in a newly added information field of DCI signaling. The newly added information field used to carry the first indication information and / or the second indication information may be determined by protocol agreement or indicated by a network device.

[0194] In some implementations, blank bits may be added to the first indication information and / or the second indication information. Optionally, the second indication information may display a transmission waveform indicating the transmission channel to the terminal device. For example, when the candidate transmission waveforms include an SC-OFDM waveform and a CP-OFDM waveform, one bit may be added, and the value of the bit may be used to determine which of the two candidate transmission waveforms the transmission channel corresponds to. For example, a value of "0" for the newly added bit may indicate that the transmission waveform is SC-OFDM. A value of "1" for the newly added bit may indicate CP-OFDM.

[0195] Optionally, the second indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device. For example, if there are K candidate transmission waveforms and a parameter has N possible values, the second indication information may be a single value of the parameter. The transmission waveform of the transmission channel may be ultimately determined based on the mapping between the N possible values ​​and the K waveforms.

[0196] In some implementations, the terminal device and the network device perform an initial access procedure and a random access procedure using a fourth fixed transmission waveform, so that the terminal device can receive user equipment-specific signaling sent by the network device using the fourth fixed transmission waveform. The fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0197] In the embodiments of the present application, when channel conditions change, the terminal device can carry the indication information in the RRC signaling and DCI signaling to re-determine the transmission waveform adapted for the channel. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed according to the channel changes, so that the channel and the transmission waveform are adapted in a timely manner, thereby improving system performance.

[0198] Please refer to Figure 12, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 12, the method may include but is not limited to the following steps:

[0199] S1201: Receive first indication information sent by a network device through RRC signaling, and determine one or more candidate transmission waveforms corresponding to a transmission channel according to the first indication information.

[0200] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0201] In the embodiment of the present application, the implementation method of step S1201 can be implemented by any method in the various embodiments of the present application, which is not limited here and will not be repeated.

[0202] S1202: Receive third indication information sent by the network device through MAC CE signaling, and activate the transmission waveform of the transmission channel according to the third indication information.

[0203] The transmission waveform of the activated transmission channel is one of the candidate transmission waveforms.

[0204] In some implementations, a terminal device may receive a MAC CE sent by a network device, wherein the MAC CE signaling carries third waveform indication information, wherein the third waveform indication information is used to indicate a transmission waveform of a transmission channel, wherein the transmission waveform of the indicated channel is one of one or more candidate transmission waveforms configured through the MAC CE.

[0205] In some implementations, the indication information for indicating the transmission waveform may reuse an existing information field in RRC signaling or MAC CE signaling. Alternatively, the first indication information may reuse an existing information field in RRC signaling. Alternatively, the third indication information may reuse an existing information field in MAC CE signaling.

[0206] In some implementations, the existing information domain used to carry the first indication information and / or the second indication information may be agreed upon by a protocol or indicated by a network device.

[0207] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of RRC signaling or MAC CE signaling. Optionally, the first indication information may be carried in a newly added information field of RRC signaling. The third indication information may be carried in a newly added information field of MAC CE signaling. The newly added information field for carrying the first indication information and / or the third indication information may be determined by protocol agreement or indicated by a network device.

[0208] In some implementations, blank bits may be added to the first indication information and / or the third indication information.

[0209] Optionally, the third indication information may display a transmission waveform indicating a transmission channel to the terminal device.

[0210] Optionally, the third indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0211] In some implementations, the terminal device and the network device perform an initial access procedure and a random access procedure using a fourth fixed transmission waveform, so that the terminal device can receive user equipment-specific signaling sent by the network device using the fourth fixed transmission waveform. The fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0212] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on the indication information carried by RRC signaling and MAC CE signaling. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0213] Please refer to Figure 13, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 13, the method may include but is not limited to the following steps:

[0214] S1301: Receive fourth indication information sent by a network device through MAC CE signaling, and determine one or more candidate transmission waveforms corresponding to a transmission channel according to the fourth indication information.

[0215] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0216] In some implementations, the terminal device may receive fourth waveform indication information sent by the network device via MAC CE signaling, and the terminal device may determine one or more candidate transmission waveforms configured by the network device for the transmission channel based on the fourth waveform indication information.

[0217] S1302: Receive fifth indication information sent by the network device through DCI signaling, and determine a transmission waveform of a transmission channel according to the fifth indication information.

[0218] The transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0219] In some implementations, a terminal device may receive DCI signaling sent by a network device, where the DCI signaling carries fifth waveform indication information, where the fifth waveform indication information is used to indicate a transmission waveform of a transmission channel, where the transmission waveform of the indicated channel is one of one or more candidate transmission waveforms configured through the DCI.

[0220] In some implementations, the indication information for indicating the transmission waveform may reuse an existing information field in MAC CE signaling or DCI signaling. Optionally, the fourth indication information may reuse an existing information field in MAC CE signaling. Optionally, the fifth indication information may reuse an existing information field in DCI signaling.

[0221] In some implementations, the existing information field used to carry the fourth indication information and / or the fifth indication information may be agreed upon by a protocol or indicated by a network device.

[0222] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of MAC CE signaling or DCI signaling. Optionally, the fourth indication information may be carried in a newly added information field of MAC CE signaling. The fifth indication information may be carried in a newly added information field of DCI signaling. The newly added information field for carrying the fourth indication information and / or the fifth indication information may be determined by protocol agreement or indicated by a network device.

[0223] In some implementations, blank bits may be added to the fourth indication information and / or the fifth indication information.

[0224] Optionally, the fifth indication information may display a transmission waveform indicating a transmission channel to the terminal device.

[0225] Optionally, the fifth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0226] In some implementations, the terminal device and the network device perform an initial access procedure and a random access procedure using a fourth fixed transmission waveform, so that the terminal device can receive user equipment-specific signaling sent by the network device using the fourth fixed transmission waveform. The fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0227] It is understood that step S1301 and step S1302 can be performed simultaneously or sequentially, for example, first performing step S1301 and then performing step S1302; or first performing step S1302 and then performing step S1301. In the embodiments of the present application, the order of performing step S1301 and step S1302 is not limited.

[0228] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on the indication information carried by MAC CE signaling or DCI signaling. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0229] Please refer to Figure 14, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 14, the method may include but is not limited to the following steps:

[0230] S1401: Receive sixth indication information sent by a network device through RRC signaling, and determine multiple candidate transmission waveforms corresponding to a transmission channel according to the sixth indication information.

[0231] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0232] In some implementations, the UE-specific signaling that the terminal device can receive from the network device can be RRC signaling, that is, the terminal device can receive sixth indication information sent by the network device via RRC signaling. The terminal device can determine one or more candidate transmission waveforms configured by the network device for the transmission channel based on the sixth indication information.

[0233] In some implementations, the sixth indication information may reuse an existing information field in RRC signaling. The existing information field used to carry the sixth indication information may be agreed upon by a protocol or indicated by a network device.

[0234] In some implementations, the sixth indication information may be carried in a newly added information field of the RRC signaling. The newly added information field used to carry the sixth indication information may be agreed upon by a protocol or indicated by a network device.

[0235] In some implementations, a blank bit may be added to the sixth indication information.

[0236] S1402: Receive seventh indication information sent by the network device through MAC CE signaling, and activate part of the multiple candidate transmission waveforms corresponding to the transmission channel according to the seventh indication information.

[0237] In some implementations, a terminal device may receive seventh waveform indication information sent by a network device via MAC CE signaling, and activate some of the multiple candidate transmission waveforms based on the seventh waveform indication information. For example, RRC signaling is used to configure N candidate transmission waveforms. MAC CE signaling is used to activate I candidate transmission waveforms out of the N candidate transmission waveforms, where I is less than N, and I and N are positive integers.

[0238] In some implementations, the seventh indication information may reuse an existing information field in MAC CE signaling. The existing information field used to carry the seventh indication information may be agreed upon by a protocol or indicated by a network device.

[0239] In some implementations, the seventh indication information may be multiplexed into a newly added information field of the MAC CE signaling. The newly added information field used to carry the seventh indication information may be agreed upon by a protocol or indicated by a network device.

[0240] In some implementations, a blank bit may be added to the seventh indication information.

[0241] S1403: Receive eighth indication information sent by the network device through DCI signaling, and determine a transmission waveform of the transmission channel according to the eighth indication information.

[0242] The transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

[0243] In some implementations, the eighth indication information may reuse an existing information field in the DCI signaling. The existing information field used to carry the eighth indication information may be agreed upon by a protocol or indicated by a network device.

[0244] In some implementations, the eighth indication information may be multiplexed into a newly added information field of the DCI signaling. The newly added information field used to carry the eighth indication information may be agreed upon by a protocol or indicated by a network device.

[0245] In some implementations, a blank bit may be added to the eighth indication information. Optionally, the eighth indication information may explicitly indicate the transmission waveform of the transmission channel to the terminal device. Optionally, the eighth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0246] In some implementations, the terminal device and the network device perform an initial access procedure and a random access procedure using a fourth fixed transmission waveform, so that the terminal device can receive user equipment-specific signaling sent by the network device using the fourth fixed transmission waveform. The fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0247] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on the indication information carried in RRC signaling, MAC CE, and DCI signaling. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0248] Please refer to Figure 15, which is a flow chart of a method for determining a transmission waveform provided in an embodiment of the present application. The method for determining a transmission waveform can be executed by a terminal device. As shown in Figure 15, the method may include but is not limited to the following steps:

[0249] S1501: Determine one or more candidate transmission waveforms corresponding to a transmission channel of a terminal device based on a protocol agreement.

[0250] S1502: Receive ninth indication information sent by the network device through DCI signaling, and determine a transmission waveform of a transmission channel according to the ninth indication information.

[0251] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0252] The transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0253] In some implementations, the ninth indication information may reuse an existing information field in the DCI signaling. The existing information field used to carry the ninth indication information may be agreed upon by a protocol or indicated by a network device.

[0254] In some implementations, the ninth indication information may be multiplexed into a newly added information field of the DCI signaling. The newly added information field used to carry the ninth indication information may be agreed upon by a protocol or indicated by a network device.

[0255] In some implementations, a blank bit may be added to the ninth indication information. Optionally, the ninth indication information may explicitly indicate the transmission waveform of the transmission channel to the terminal device. Optionally, the ninth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0256] In some implementations, the terminal device and the network device perform an initial access procedure and a random access procedure using a fourth fixed transmission waveform, so that the terminal device can receive user equipment-specific signaling sent by the network device using the fourth fixed transmission waveform. The fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0257] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on the protocol agreement and the indication information carried by the DCI signaling. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0258] Please refer to Figure 16, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a network device. As shown in Figure 16, the method may include but is not limited to the following steps:

[0259] S1601: Send waveform indication information to a terminal device, where the waveform indication information is used to determine a transmission waveform of a transmission channel of the terminal device.

[0260] In some implementations, the transmission channel of the terminal device may be a transmission channel used in a current application scenario, or a transmission channel used in an application scenario for a period of time in the future.

[0261] In some implementations, the network device may include a system signaling indication and may also include a user equipment-specific signaling indication.

[0262] In some implementations, the network device may send waveform indication information to the terminal device via system signaling, including but not limited to PSS signaling, SSS signaling, MIB signaling, and SIB signaling.

[0263] In some implementations, the network device may send waveform indication information to the terminal device via UE-specific signaling, including but not limited to RRC signaling, MAC CE signaling, and DCI signaling.

[0264] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0265] Please refer to Figure 17, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a network device. As shown in Figure 17, the method may include but is not limited to the following steps:

[0266] S1701, sending first waveform indication information to the terminal device through system signaling.

[0267] In the embodiment of the present application, the first waveform indication information is used to indicate the transmission waveform of the transmission channel of the terminal device. In some implementations, the transmission channel of the terminal device can be the transmission channel used in the current application scenario, or the transmission channel used in the application scenario in the future.

[0268] In one implementation, the network device may send a synchronization signal sequence to the terminal device using a first fixed transmission waveform, wherein the first fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0269] In some implementations, the synchronization signal sequence may be a PSS sequence or an SSS sequence.

[0270] In some implementations, the network device may send the first waveform indication information to the terminal device via a PSS sequence or an SSS sequence, that is, the network device may send a PSS sequence or an SSS sequence to the terminal device, and the PSS sequence or the SSS sequence may carry the first waveform indication information.

[0271] In some implementations, the first waveform indication information is existing information in a synchronization signal sequence. Optionally, the first waveform indication information can be an initialization parameter in a PSS sequence or an SSS sequence, and the initialization parameter of the PSS sequence or the SSS sequence indicates relevant information of the transmission waveform.

[0272] Optionally, the initialization parameter for waveform indication in the PSS sequence or SSS sequence can have N possible values, and the N possible values ​​can indicate K transmission waveforms. That is, the mapping relationship between the transmission waveforms in the N values ​​can be predetermined. Furthermore, through the specific value of the initialization parameter in the PSS or SSS sequence, the mapping relationship between the transmission waveforms in the N values ​​is queried, and the transmission waveform corresponding to the initialization parameter is determined. Among them, the value of the initialization parameter for waveform indication in the PSS sequence or SSS sequence does not include the parameter value used to indicate the Cell-ID.

[0273] In some implementations, the first waveform indication information is new information in the synchronization signal sequence, and the new information is used as the first waveform indication information. Optionally, the first waveform indication information can be a new parameter in a PSS sequence or an SSS sequence, and the new parameter of the PSS sequence or the SSS sequence is used to indicate relevant information about the transmission waveform. Optionally, a waveform indication parameter is added to the reserved blank bits in the PSS sequence or the SSS sequence. The transmission waveform of the transmission channel is indicated to the terminal device through the new waveform indication parameter in the PSS sequence or the SSS sequence. Accordingly, after the terminal device receives the PSS sequence or the SSS sequence, it can obtain the new waveform indication parameter and determine the transmission waveform of the transmission channel. For example, the new waveform indication parameter can be a waveform index value. Optionally, the number of bits occupied by the new waveform indication parameter can be determined by the number of candidate transmission waveforms. For example, log2(N) bits can be added for waveform indication information, where N represents the number of candidate transmission waveforms.

[0274] In some implementations, the network device may send an MIB containing a second fixed transmission waveform to the terminal device, wherein the second fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0275] In some implementations, the network device may send an SIB using a third fixed transmission waveform to the terminal device, wherein the third fixed transmission waveform is a waveform determined by the network device according to a protocol agreement or pre-configuration.

[0276] Optionally, the second fixed transmission waveform and the third fixed transmission waveform may be the same or different.

[0277] In some implementations, the network device may send the first waveform indication information to the terminal device via a PSS sequence or an SSS sequence, that is, the network device may send a MIB or SIB to the terminal device, and the MIB or SIB may carry the second waveform indication information.

[0278] In some implementations, the second waveform indication information may be carried in a newly added information field in the MIB or SIB.

[0279] Optionally, a waveform indication field can be added to the MIB or SIB. This waveform indication field is a newly added information field. By adding the waveform indication field to the MIB or SIB, the transmission waveform of the transmission channel is indicated to the terminal device. For example, the newly added waveform indication field can be used to indicate a waveform index value. Optionally, the number of bits occupied by the newly added waveform indication field can be determined by the number of candidate transmission waveforms. For example, log2(N) bits can be added for waveform indication information, where N represents the number of candidate transmission waveforms.

[0280] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0281] Please refer to Figure 18, which is a flow chart of a method for determining a transmission waveform provided by an embodiment of the present application. The method for determining a transmission waveform can be executed by a network device. As shown in Figure 18, the method may include but is not limited to the following steps:

[0282] S1801, sending second waveform indication information to the terminal device through UE dedicated signaling.

[0283] In the embodiment of the present application, the second waveform indication information is used to indicate the transmission waveform of the transmission channel of the terminal device. In some implementations, the transmission channel of the terminal device can be the transmission channel used in the current application scenario, or the transmission channel used in the application scenario in the future.

[0284] In some implementations, before the network device sends UE-specific signaling to the terminal device, it may perform an initial access procedure and a random access procedure with the terminal device using a fourth fixed transmission waveform, wherein the fourth fixed transmission waveform is determined by the network device through a protocol agreement.

[0285] In some implementations, UE-specific signaling may include, but is not limited to, RRC signaling, MAC CE signaling, and DCI signaling.

[0286] In some implementations, the second waveform indication information may reuse existing information or an existing information field in the UE-dedicated signaling, or the second waveform indication information may also be newly added information in a newly added information field of the UE-dedicated signaling.

[0287] In some implementations, the network device sends first indication information to the terminal device via RRC signaling, and the terminal device may determine one or more candidate transmission waveforms corresponding to the transmission channel based on the first indication information. The network device sends second indication information to the terminal device via DCI signaling, and the terminal device determines the transmission waveform of the transmission channel based on the second indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0288] In some implementations, the existing information domain used to carry the first indication information and / or the second indication information may be agreed upon by a protocol or indicated by a network device.

[0289] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of RRC signaling or DCI signaling. Optionally, the first indication information may be carried in a newly added information field of RRC signaling. The second indication information may be carried in a newly added information field of DCI signaling. The newly added information field used to carry the first indication information and / or the second indication information may be determined by protocol agreement or indicated by a network device.

[0290] In some implementations, blank bits may be added to the first indication information and / or the second indication information.

[0291] Optionally, the second indication information may explicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0292] Optionally, the second indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device. Specific operations can be found in the above embodiment, which will not be described in detail here.

[0293] In some implementations, the network device sends first indication information to the terminal device via RRC signaling, and the terminal device may determine one or more candidate transmission waveforms corresponding to the transmission channel based on the first indication information. The network device sends third indication information to the terminal device via MAC CE signaling, and the terminal device may activate the transmission waveform of the transmission channel based on the third indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0294] In some implementations, the indication information for indicating the transmission waveform may reuse an existing information field in RRC signaling or MAC CE signaling. Alternatively, the first indication information may reuse an existing information field in RRC signaling. Alternatively, the third indication information may reuse an existing information field in MAC CE signaling.

[0295] In some implementations, the existing information domain used to carry the first indication information and / or the third indication information may be agreed upon by a protocol or indicated by a network device.

[0296] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of RRC signaling or MAC CE signaling. Optionally, the first indication information may be carried in a newly added information field of RRC signaling. The third indication information may be carried in a newly added information field of MAC CE signaling. The newly added information field for carrying the first indication information and / or the third indication information may be determined by protocol agreement or indicated by a network device.

[0297] In some implementations, blank bits may be added to the first indication information and / or the third indication information.

[0298] Optionally, the third indication information may display a transmission waveform indicating a transmission channel to the terminal device.

[0299] Optionally, the third indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0300] In some implementations, the network device sends fourth indication information to the terminal device via MAC CE signaling, and the terminal device may determine one or more candidate transmission waveforms corresponding to the transmission channel based on the fourth indication information. The network device sends fifth indication information to the terminal device via DCI signaling, and the terminal device may determine the transmission waveform of the transmission channel based on the fifth indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0301] In some implementations, the indication information for indicating the transmission waveform may reuse an existing information field in MAC CE signaling or DCI signaling. Optionally, the fourth indication information may reuse an existing information field in MAC CE signaling. Optionally, the fifth indication information may reuse an existing information field in DCI signaling.

[0302] In some implementations, the existing information field used to carry the fourth indication information and / or the fifth indication information may be agreed upon by a protocol or indicated by a network device.

[0303] In some implementations, the indication information for indicating the transmission waveform may be carried in a newly added information field of MAC CE signaling or DCI signaling. Optionally, the fourth indication information may be carried in a newly added information field of MAC CE signaling. The fifth indication information may be carried in a newly added information field of DCI signaling. The newly added information field for carrying the fourth indication information and / or the fifth indication information may be determined by protocol agreement or indicated by a network device.

[0304] In some implementations, blank bits may be added to the fourth indication information and / or the fifth indication information.

[0305] Optionally, the fifth indication information may display a transmission waveform indicating a transmission channel to the terminal device.

[0306] Optionally, the fifth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0307] In some implementations, the network device sends sixth indication information to the terminal device via RRC signaling, and the terminal device may determine multiple candidate transmission waveforms corresponding to the transmission channel based on the sixth indication information. The network device sends seventh indication information to the terminal device via MAC CE signaling, and the terminal device may activate some of the multiple candidate transmission waveforms corresponding to the transmission channel based on the seventh indication information. The network device sends eighth indication information to the terminal device via DCI signaling, and the terminal device may determine the transmission waveform of the transmission channel based on the eighth indication information, where the transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

[0308] In some implementations, the sixth indication information may reuse an existing information field in RRC signaling. The existing information field used to carry the sixth indication information may be agreed upon by a protocol or indicated by a network device.

[0309] In some implementations, the sixth indication information may be carried in a newly added information field of the RRC signaling. The newly added information field used to carry the sixth indication information may be agreed upon by a protocol or indicated by a network device.

[0310] In some implementations, a blank bit may be added to the sixth indication information.

[0311] In some implementations, the seventh indication information may reuse an existing information field in MAC CE signaling. The existing information field used to carry the seventh indication information may be agreed upon by a protocol or indicated by a network device.

[0312] In some implementations, the seventh indication information may be multiplexed into a newly added information field of the MAC CE signaling. The newly added information field used to carry the seventh indication information may be agreed upon by a protocol or indicated by a network device.

[0313] In some implementations, a blank bit may be added to the seventh indication information.

[0314] In some implementations, the eighth indication information may reuse an existing information field in the DCI signaling. The existing information field used to carry the eighth indication information may be agreed upon by a protocol or indicated by a network device.

[0315] In some implementations, the eighth indication information may be multiplexed into a newly added information field of the DCI signaling. The newly added information field used to carry the eighth indication information may be agreed upon by a protocol or indicated by a network device.

[0316] In some implementations, a blank bit may be added to the eighth indication information. Optionally, the eighth indication information may explicitly indicate the transmission waveform of the transmission channel to the terminal device. Optionally, the eighth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0317] In some implementations, one or more candidate transmission waveforms corresponding to a transmission channel are determined based on a protocol agreement. The network device sends ninth indication information to the terminal device via DCI signaling, and the terminal device may determine the transmission waveform of the transmission channel based on the ninth indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0318] In some implementations, the ninth indication information may reuse an existing information field in the DCI signaling. The existing information field used to carry the ninth indication information may be agreed upon by a protocol or indicated by a network device.

[0319] In some implementations, the ninth indication information may be multiplexed into a newly added information field of the DCI signaling. The newly added information field used to carry the ninth indication information may be agreed upon by a protocol or indicated by a network device.

[0320] In some implementations, a blank bit may be added to the ninth indication information. Optionally, the ninth indication information may explicitly indicate the transmission waveform of the transmission channel to the terminal device. Optionally, the ninth indication information may implicitly indicate the transmission waveform of the transmission channel to the terminal device.

[0321] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0322] Based on the above embodiment, the first indication information to the ninth indication information may be the same indication information or different indication information.

[0323] In the embodiments provided above, the methods provided in the embodiments of the present application are described from the perspectives of network devices and terminal devices, respectively. In order to implement the various functions in the methods provided in the embodiments of the present application, the network devices and terminal devices may include hardware structures and software modules, and the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures plus software modules. A particular function among the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures plus software modules.

[0324] Please refer to Figure 19, which is a schematic diagram of the structure of a communication device 1900 provided in an embodiment of the present application. The communication device 1900 shown in Figure 19 may include a transceiver module 1901 and a processing module 1902. The transceiver module 1901 may include a sending module and / or a receiving module. The sending module is used to implement a sending function, and the receiving module is used to implement a receiving function. The transceiver module 1901 can implement the sending function and / or the receiving function.

[0325] The communication device 1900 may be a network device, a device in a network device, or a device that can be used in conjunction with a network device. Alternatively, the communication device 1900 may be a terminal device, a device in a terminal device, or a device that can be used in conjunction with a terminal device.

[0326] The communication device 1900 is a terminal device:

[0327] The processing module 1902 is used to determine the transmission waveform of the transmission channel of the terminal device according to the network instruction or protocol agreement.

[0328] In some implementations, the processing module 1902 is further used to determine the target carrier frequency of the transmission channel; determine the transmission waveform of the transmission channel based on the target carrier frequency and the mapping relationship between the carrier frequency and the waveform, wherein the mapping relationship is agreed upon by the protocol.

[0329] In some implementations, the transceiver module 1901 is further configured to receive waveform indication information sent by a network device; and the processing module 1902 is further configured to determine the transmission waveform of the transmission channel according to the waveform indication information.

[0330] In some implementations, the transceiver module 1901 is further configured to receive first waveform indication information sent by the network device via system signaling.

[0331] In some implementations, the transceiver module 1901 is further configured to receive first waveform indication information sent by the network device via a synchronization signal sequence, wherein the synchronization signal sequence includes a primary synchronization signal PSS sequence and a secondary synchronization signal SSS sequence.

[0332] In some implementations, the first waveform indication information is existing information in the synchronization signal sequence, or is newly added information in the synchronization signal sequence.

[0333] In some implementations, the transceiver module 1902 is further configured to receive the synchronization signal sequence sent by the network device via a first fixed transmission waveform.

[0334] In some implementations, the transceiver module 1902 is further configured to receive first waveform indication information sent by the network device via a master information block MIB or a system information block SIB.

[0335] In some implementations, the first waveform indication information is carried in a newly added information field in the master information block or the system information block.

[0336] In some implementations, the transceiver module 1901 is further configured to receive the MIB sent by the network device via a second fixed transmission waveform; or receive the SIB sent by the network device via a third fixed transmission waveform.

[0337] In some implementations, the transceiver module 1901 is further configured to receive second waveform indication information sent by the network device via user equipment dedicated signaling.

[0338] In some implementations, the transceiver module 1901 is further configured to receive first indication information sent by the network device through RRC signaling; the processing module 1902 is further configured to determine one or more candidate transmission waveforms corresponding to the transmission channel based on the first indication information;

[0339] The transceiver module 1901 is also used to receive the second indication information sent by the network device through DCI signaling; the processing module 1902 is also used to determine the transmission waveform of the transmission channel based on the second indication information, wherein the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0340] In some implementations, the transceiver module 1901 is further used to receive first indication information sent by the network device through RRC signaling, and the processing module 1902 is further used to determine one or more candidate transmission waveforms corresponding to the transmission channel based on the first indication information; the transceiver module 1901 is also used to receive third indication information sent by the network device through MAC CE signaling, and the processing module 1902 is further used to activate the transmission waveform of the transmission channel based on the third indication information, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0341] In some implementations, the transceiver module 1901 is further used to receive fourth indication information sent by the network device through MAC CE signaling, and the processing module 1902 is further used to determine one or more candidate transmission waveforms corresponding to the transmission channel based on the fourth indication information; the transceiver module 1901 is also used to receive fifth indication information sent by the network device through DCI signaling, and the processing module 1902 is further used to determine the transmission waveform of the transmission channel based on the fifth indication information, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0342] In some implementations, the transceiver module 1901 is further used to receive sixth indication information sent by the network device through RRC signaling, and the processing module 1902 is further used to determine multiple candidate transmission waveforms corresponding to the transmission channel based on the sixth indication information; the transceiver module 1901 is also used to receive seventh indication information sent by the network device through MAC CE signaling, and the processing module 1902 is further used to activate some of the multiple candidate transmission waveforms corresponding to the transmission channel based on the seventh indication information; the transceiver module 1901 is also used to receive eighth indication information sent by the network device through DCI signaling, and the processing module 1902 is further used to determine the transmission waveform of the transmission channel based on the eighth indication information, and the transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

[0343] In some implementations, the processing module 1902 is further used to determine one or more candidate transmission waveforms corresponding to the transmission channel based on protocol agreement; the transceiver module 1901 is further used to receive the ninth indication information sent by the network device through DCI signaling, and the processing module 1902 is further used to determine the transmission waveform of the transmission channel using the ninth indication information, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0344] In some implementations, the indication information for indicating the transmission waveform may reuse an original information field in the user equipment-specific signaling, or be a newly added information field in the user equipment-specific signaling.

[0345] In some implementations, the transceiver module 1901 is further configured to perform an initial access procedure and a random access procedure with the network device using a fourth fixed transmission waveform before receiving UE-specific signaling sent by the network device.

[0346] In some implementations, the processing module 1902 is further configured to determine the transmission waveform based on the target carrier frequency of the transmission channel and a mapping relationship between carrier frequency and transmission waveform if the waveform indication information sent by the network device is not received.

[0347] In some implementations, the processing module 1902 is further used to determine the transmission waveform based on the second waveform indication information if the first waveform indication information is received in the system signaling sent by the network device and the second waveform indication information is received in the user equipment dedicated signaling; or, if the first waveform indication information is received but the second waveform indication information is not received, determine the transmission waveform based on the first waveform indication information.

[0348] The communication device 1900 is a network device:

[0349] The transceiver module 1901 is configured to send waveform indication information to a terminal device, wherein the waveform indication information is used to determine a transmission waveform of a transmission channel of the terminal device.

[0350] In some implementations, the transceiver module 1901 is further configured to send first waveform indication information to the terminal device via system signaling.

[0351] In some implementations, the transceiver module 1901 is further used to send a synchronization signal sequence to the terminal device via a synchronization signal sequence to send first waveform indication information, wherein the synchronization signal includes a PSS sequence and an SSS sequence.

[0352] In some implementations, existing information specified in the synchronization signal sequence is used as the first waveform indication information; or, newly added information in the synchronization signal sequence is used as the first waveform indication information.

[0353] In some implementations, the transceiver module 1901 is further configured to send the synchronization signal sequence to the terminal device via a first fixed transmission waveform.

[0354] In some implementations, the transceiver module 1901 is further configured to send MIB or SIB first waveform indication information to the terminal device via the MIB or SIB.

[0355] In some implementations, the processing module 1901 is further configured to add a new information field in the MIB or SIB, where the new information field is configured to carry the first waveform indication information.

[0356] In some implementations, the transceiver module 1901 is further configured to send the MIB to the terminal device via a second fixed transmission waveform; or send the SIB to the terminal device via a third fixed transmission waveform.

[0357] In some implementations, the transceiver module 1901 is further used to send second waveform indication information to the terminal device via UE-specific signaling.

[0358] In some implementations, the transceiver module 1901 is also used to send first indication information to the terminal device through RRC signaling, where the first indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; and send second indication information to the terminal device through DCI signaling, where the second indication information is used to indicate the transmission waveform of the transmission channel, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0359] In some implementations, the transceiver module 1901 is also used to send first indication information to the terminal device through RRC signaling, where the first indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; and send third indication information to the terminal device through MAC CE signaling, where the third indication information is used to activate the transmission waveform of the transmission channel, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0360] In some implementations, the transceiver module 1901 is further used to send fourth indication information to the terminal device through MAC CE signaling, and the fourth indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; and send fifth indication information to the terminal device through DCI signaling, and the fifth indication information is used to indicate the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0361] In some implementations, the transceiver module 1901 is further used to send sixth indication information to the terminal device through RRC signaling, where the sixth indication information is used to configure multiple candidate transmission waveforms corresponding to the transmission channel; send seventh indication information to the terminal device through MAC CE signaling, where the seventh indication information is used to activate some of the multiple candidate transmission waveforms corresponding to the transmission channel; and send eighth indication information to the terminal device through DCI signaling, where the eighth indication information is used to indicate the transmission waveform of the transmission channel, where the transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

[0362] In some implementations, the processing module 1902 is also used to determine one or more candidate transmission waveforms corresponding to the transmission channel based on protocol agreement; the transceiver module 1901 is also used to send sixth indication information to the terminal device through DCI signaling, and the sixth indication information is used to indicate the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

[0363] In some implementations, the indication information indicating the transmission waveform reuses an original information field in the user equipment-specific signaling, or is a newly added information field in the user equipment-specific signaling.

[0364] In some implementations, the transceiver module 1901 is further configured to perform an initial access process and a random access process with the terminal device via a fourth fixed transmission waveform.

[0365] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0366] Please refer to Figure 20, which is a schematic diagram of the structure of another communication device 2000 provided in an embodiment of the present application. Communication device 2000 can be a network device or a terminal device, or a chip, chip system, or processor that supports the network device to implement the above method, or a chip, chip system, or processor that supports the terminal device to implement the above method. This device can be used to implement the method described in the above method embodiment, and please refer to the description of the above method embodiment for details.

[0367] The communication device 2000 may include one or more processors 2001. The processor 2001 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0368] Optionally, the communication device 2000 may further include one or more memories 2002, on which a computer program 2004 may be stored. The processor 2001 executes the computer program 2004 to cause the communication device 2000 to perform the method described in the above method embodiment. Optionally, the memory 2002 may also store data. The communication device 2000 and the memory 2002 may be provided separately or integrated together.

[0369] Optionally, the communication device 2000 may further include a transceiver 2005 and an antenna 2006. The transceiver 2005 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. The transceiver 2005 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0370] Optionally, the communication device 2000 may further include one or more interface circuits 2007. The interface circuit 2007 is configured to receive code instructions and transmit the code instructions to the processor 2001. The processor 2001 executes the code instructions to enable the communication device 2000 to perform the method described in the above method embodiment.

[0371] In one implementation, the processor 2001 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0372] In one implementation, processor 2001 may store a computer program 2003. Computer program 2003, when executed on processor 2001, may cause communication device 2000 to perform the method described in the above method embodiment. Computer program 2003 may be embedded in processor 2001, in which case processor 2001 may be implemented by hardware.

[0373] In one implementation, the communication device 2000 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0374] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to FIG20. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0375] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0376] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0377] (3) ASIC, such as modem;

[0378] (4) Modules that can be embedded in other devices;

[0379] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0380] (6)Others, etc.

[0381] In the case where the communication device can be a chip or a chip system, please refer to the structural diagram of the chip shown in Figure 21. The chip shown in Figure 21 includes a processor 2101 and an interface 2102. The number of processors 2101 can be one or more, and the number of interfaces 2102 can be multiple.

[0382] Optionally, the chip further includes a memory 2103, which is used to store necessary computer programs and data.

[0383] In some implementations, the chip can be used to implement the functions of the terminal device in the above-mentioned embodiments of the present application.

[0384] In some implementations, the chip can be used to implement the functions of the network device in the above-mentioned embodiments of the present application.

[0385] In the embodiments of the present application, when channel conditions change, the terminal device can re-determine the appropriate transmission waveform for the channel based on instructions from the network device or according to protocol agreements. Thus, when multiple waveforms coexist, the transmission waveform can be adaptively changed based on channel changes, allowing the channel and transmission waveform to adapt in a timely manner, thereby improving system performance.

[0386] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0387] An embodiment of the present application also provides a system for determining a transmission waveform, which includes the communication device as a network device and the communication device as a terminal device in the embodiment of Figure 20 above, or the system includes the communication device as a network device and the communication device as a network device in the embodiment of Figure 21 above.

[0388] The present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0389] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0390] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0391] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application, and also indicate the order of precedence.

[0392] In this application, at least one can also be described as one or more, and multiple can be two, three, four or more, which is not limited in this application. In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0393] The correspondences shown in the tables in this application can be configured or predefined. The values ​​of the information in each table are examples only and can be configured to other values, which are not limited by this application. When configuring the correspondence between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables in this application, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also use other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0394] The predefined in this application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0395] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0396] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0397] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. [Corrected 27.04.2023 in accordance with Rule 91] A method for determining a transmission waveform, characterized in that Executed by a terminal device, the method includes: According to the network device indication or protocol agreement, the transmission waveform of the transmission channel of the terminal device is determined.

2. [Corrected 27.04.2023 in accordance with Article 91] The method according to claim 1, characterized in that According to the protocol, determining the transmission waveform of the transmission channel includes: determining a target carrier frequency of the transmission channel; The transmission waveform of the transmission channel is determined according to the target carrier frequency and the mapping relationship between the carrier frequency and the waveform, wherein the mapping relationship is agreed upon by a protocol.

3. [Corrected 27.04.2023 in accordance with Article 91] The method according to claim 1, characterized in that Determining a transmission waveform of the transmission channel according to an instruction of the network device includes: Receiving waveform indication information sent by a network device; A transmission waveform of the transmission channel is determined according to the waveform indication information.

4. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 3, characterized in that The receiving of waveform indication information sent by the network device includes: Receive first waveform indication information sent by the network device through system signaling.

5. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 4, characterized in that The receiving first waveform indication information sent by the network device through system signaling includes: Receive first waveform indication information sent by the network device through a synchronization signal sequence, wherein the synchronization signal sequence includes a primary synchronization signal PSS sequence and a secondary synchronization signal SSS sequence.

6. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 5, characterized in that The first waveform indication information is existing information in the synchronization signal sequence, or is newly added information in the synchronization signal sequence.

7. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 5, characterized in that The method further comprises: The synchronization signal sequence sent by the network device through a first fixed transmission waveform is received.

8. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 4, characterized in that The receiving first waveform indication information sent by the network device through system signaling includes: Receive the first waveform indication information sent by the network device through a master information block MIB or a system information block SIB.

9. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 8, characterized in that The first waveform indication information is carried in a newly added information field in the master information block or the system information block.

10. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 8, characterized in that The receiving a master information block or a system information block sent by the network device includes: receiving the MIB sent by the network device through a second fixed transmission waveform; or, The SIB is received and sent by the network device through a third fixed transmission waveform.

11. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 3, characterized in that The receiving of waveform indication information sent by the network device includes: Receive second waveform indication information sent by the network device through user equipment dedicated signaling.

12. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 11, characterized in that The receiving user equipment dedicated signaling sent by the network device includes: receiving first indication information sent by the network device through radio resource control RRC signaling, and determining one or more candidate transmission waveforms corresponding to the transmission channel according to the first indication information; Second indication information sent by the network device through downlink control information DCI signaling is received, and a transmission waveform of the transmission channel is determined according to the second indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

13. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 11, characterized in that The receiving user equipment dedicated signaling sent by the network device includes: receiving first indication information sent by the network device through RRC signaling, and determining one or more candidate transmission waveforms corresponding to the transmission channel according to the first indication information; The third indication information sent by the network device through the media access control layer control element MAC CE signaling is received, and the third indication information activates the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

14. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 11, characterized in that The receiving user equipment dedicated signaling sent by the network device includes: receiving fourth indication information sent by the network device through MAC CE signaling, and determining one or more candidate transmission waveforms corresponding to the transmission channel according to the fourth indication information; Fifth indication information is received that is sent by the network device through DCI signaling, and a transmission waveform of the transmission channel is determined according to the fifth indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

15. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 11, characterized in that The receiving user equipment dedicated signaling sent by the network device includes: receiving sixth indication information sent by the network device through RRC signaling, and determining a plurality of candidate transmission waveforms corresponding to the transmission channel according to the sixth indication information; receiving seventh indication information sent by the network device through MAC CE signaling, and activating part of the multiple candidate transmission waveforms corresponding to the transmission channel according to the seventh indication information; Receive eighth indication information sent by the network device through DCI signaling, and determine a transmission waveform of the transmission channel according to the eighth indication information, where the transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

16. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 11, characterized in that The receiving user equipment dedicated signaling sent by the network device includes: Determine one or more candidate transmission waveforms corresponding to the transmission channel based on protocol agreement; Receive ninth indication information sent by the network device through DCI signaling, and determine a transmission waveform of the transmission channel according to the ninth indication information, where the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

17. [Corrected 27.04.2023 in accordance with Rule 91] A method according to any one of claims 11 to 16, characterized in that The indication information for indicating the transmission waveform may reuse the original information field in the user equipment dedicated signaling, or may be a newly added information field in the user equipment dedicated signaling.

18. [Corrected 27.04.2023 in accordance with Rule 91] A method according to any one of claims 11 to 16, characterized in that Before receiving the user equipment dedicated signaling sent by the network device, the method further includes: An initial access process and a random access process are performed with the network device through a fourth fixed transmission waveform.

19. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 2, characterized in that The method further comprises: If the waveform indication information sent by the network device is not received, the transmission waveform is determined based on the target carrier frequency of the transmission channel and the mapping relationship between the carrier frequency and the transmission waveform.

20. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 3, characterized in that The method further comprises: If first waveform indication information in the system signaling sent by the network device is received, and second waveform indication information in the user equipment dedicated signaling is received, the transmission waveform is determined based on the second waveform indication information; or, If the first waveform indication information is received but the second waveform indication information is not received, the transmission waveform is determined based on the first waveform indication information.

21. [Corrected 27.04.2023 in accordance with Rule 91] A method for determining a transmission waveform, characterized in that Executed by a network device, the method includes: Waveform indication information is sent to a terminal device, wherein the waveform indication information is used to determine a transmission waveform of a transmission channel of the terminal device.

22. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 21, characterized in that The sending of waveform indication information to the terminal device includes: The first waveform indication information is sent to the terminal device via system signaling.

23. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 22, characterized in that The sending of system signaling to the terminal device includes: The first waveform indication information is sent to the terminal device via a synchronization signal sequence.

24. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 22, characterized in that The method further comprises: The existing information specified in the synchronization signal sequence is used as the first waveform indication information; or the newly added information in the synchronization signal sequence is used as the first waveform indication information.

25. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 22, characterized in that The method further comprises: The synchronization signal sequence is sent to the terminal device via a first fixed transmission waveform.

26. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 22, characterized in that The sending of system signaling to the terminal device includes: The first waveform indication information is sent to the terminal device through MIB or SIB.

27. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 26, characterized in that The method further comprises: A new information field is added in the MIB or SIB, and the new information field is used to carry the first waveform indication information.

28. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 26, characterized in that The method further comprises: Sending the MIB to the terminal device through a second fixed transmission waveform; or, The SIB is sent to the terminal device via a third fixed transmission waveform.

29. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 21, characterized in that The sending of waveform indication information to the terminal device includes: The second waveform indication information is sent to the terminal device via user equipment dedicated signaling.

30. [Corrected 27.04.2023 in accordance with Rule 91] The method according to claim 29, characterized in that The sending the second waveform indication information to the terminal device through user equipment dedicated signaling includes: Sending first indication information to the terminal device through RRC signaling, where the first indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; Second indication information is sent to the terminal device through DCI signaling, where the second indication information is used to indicate a transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

31. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 29, characterized in that The sending the second waveform indication information to the terminal device through user equipment dedicated signaling includes: Sending first indication information to the terminal device through RRC signaling, where the first indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; A third indication information is sent to the terminal device through MAC CE signaling, where the third indication information is used to activate the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

32. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 29, characterized in that The sending the second waveform indication information to the terminal device through user equipment dedicated signaling includes: Sending fourth indication information to the terminal device through MAC CE signaling, where the fourth indication information is used to configure one or more candidate transmission waveforms corresponding to the transmission channel; Fifth indication information is sent to the terminal device through DCI signaling, where the fifth indication information is used to indicate a transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

33. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 29, characterized in that The sending the second waveform indication information to the terminal device through user equipment dedicated signaling includes: Sending sixth indication information to the terminal device through RRC signaling, where the sixth indication information is used to configure multiple candidate transmission waveforms corresponding to the transmission channel; Sending seventh indication information to the terminal device through MAC CE signaling, where the seventh indication information is used to activate part of the candidate transmission waveforms among the multiple candidate transmission waveforms corresponding to the transmission channel; Eighth indication information is sent to the terminal device through DCI signaling, and the eighth indication information is used to indicate the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the activated candidate transmission waveforms.

34. [Corrected 27.04.2023 in accordance with Rule 91] A method according to claim 29, characterized in that The sending the second waveform indication information to the terminal device through user equipment dedicated signaling includes: Determine one or more candidate transmission waveforms corresponding to the transmission channel based on protocol agreement; Ninth indication information is sent to the terminal device through DCI signaling, and the ninth indication information is used to indicate the transmission waveform of the transmission channel, and the transmission waveform of the transmission channel is one of the candidate transmission waveforms.

35. [Corrected 27.04.2023 according to Rule 91] A method according to any one of claims 29 to 34, characterized in that The indication information for indicating the transmission waveform reuses the original information field in the user equipment dedicated signaling, or is a newly added information field in the user equipment dedicated signaling.

36. [Corrected 27.04.2023 in accordance with Rule 91] A method according to any one of claims 29 to 34, characterized in that Before sending the second waveform indication information to the terminal device through the user equipment dedicated signaling, the method further includes: An initial access process and a random access process are performed with the terminal device via a fourth fixed transmission waveform.

37. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that include: The processing module is used to determine the transmission waveform of the transmission channel according to the network device indication or protocol agreement.

38. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that include: The transceiver module is used to send waveform indication information to the terminal device, wherein the waveform indication information is used to determine the transmission waveform of the transmission channel used in the current application scenario of the terminal device.

39. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device performs the method according to any one of claims 1 to 20.

40. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 21 to 36.

41. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to execute the method according to any one of claims 1 to 20.

42. [Corrected 27.04.2023 in accordance with Rule 91] A communication device, characterized in that include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to execute the method according to any one of claims 21 to 36.

43. [Corrected on 27.04.2023 in accordance with Rule 91] A computer-readable storage medium, used to store instructions, when the instructions are executed, the method as claimed in any one of claims 1 to 20 is implemented.

44. [Corrected on 27.04.2023 in accordance with Rule 91] A computer-readable storage medium storing instructions which, when executed, enable the method as claimed in any one of claims 21 to 36 to be implemented.

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