Communication method and related device

Abstract

The invention provides a communication method and a related device. Interference among users during multi-user frequency division multiplexing is effectively avoided. The method comprises the steps that N elements are mapped to a second frequency domain resource, a first signal is generated, the second frequency domain resource comprises N second frequency domain units, the N second frequency domain units are determined according to M first frequency domain units and a first parameter, the first parameter is larger than 0 and not equal to 1, M and N are positive integers, and N is larger than M; and sending the first signal based on a first frequency domain resource, wherein the first frequency domain resource comprises M first frequency domain units.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0002] Faster-than-Nyquist (FTN) technology is a non-orthogonal transmission technology that offers higher spectral efficiency compared to traditional Nyquist transmission. FTN technology includes time-domain FTN and frequency-domain FTN, with frequency-domain FTN also known as spectrally-efficient frequency division multiplexing (SEFDM) or frequency compression. Frequency-domain FTN achieves frequency compression by sacrificing the orthogonality between subcarriers. For the same transmission duration and the same amount of information, frequency-domain FTN can utilize less bandwidth than orthogonal frequency division multiplexing (OFDM); conversely, for the same bandwidth, frequency-domain FTN can transmit more information than OFDM. In other words, compared to OFDM, frequency-domain FTN improves spectral efficiency.

[0003] In frequency division multiplexing (FDM) scenarios, network devices avoid interference between multiple terminal devices by allocating non-overlapping physical resource blocks (PRBs) or resource block groups (RBGs) to different terminal devices. However, when using frequency domain FTN technology, because multiple terminal devices in FDM may use or correspond to different frequency domain compression factors, even if the transmitting device performs subcarrier mapping according to the allocated frequency domain resources, it may still lead to spectrum overlap of the signals actually transmitted by multiple terminal devices or spectrum overlap of the signals sent to multiple terminal devices, resulting in severe inter-user interference. Summary of the Invention

[0004] This application provides a communication method and related apparatus to avoid interference between users during multi-user frequency division multiplexing.

[0005] Firstly, this application provides a communication method applicable to a first communication device. For example, the first communication device may be a terminal device or a network device, or it may be a component (such as a chip, chip system, etc.) configured in the terminal device or network device, or it may be a logic module or software capable of implementing all or part of the functions of the terminal device or network device.

[0006] For example, the method includes: mapping N elements onto a second frequency domain resource to generate a first signal, the second frequency domain resource including N second frequency domain units, the N second frequency domain units being determined based on M first frequency domain units and a first parameter, the first parameter being greater than 0 and not 1, M and N being positive integers, and N being greater than M; and transmitting the first signal based on the first frequency domain resource, the first frequency domain resource including the M first frequency domain units.

[0007] The N second frequency domain units are determined based on the M first frequency domain units and the first parameter. This can be replaced by: the index of the starting frequency domain unit in the N second frequency domain units is determined based on the index of the starting frequency domain unit in the M first frequency domain units and the first parameter, and the value of N is determined based on the value of M and the first parameter; or the index of the ending frequency domain unit in the N second frequency domain units is determined based on the index of the ending frequency domain unit in the M first frequency domain units and the first parameter.

[0008] The first frequency domain resource is a frequency domain resource scheduled for transmission, such as uplink transmission, downlink transmission, or sidelink transmission. For example, when the first communication device is a terminal device, the transmission can be uplink or sidelink transmission; when the first communication device is a network device, the transmission can be downlink transmission.

[0009] The transmission of the first signal based on the first frequency domain resources means that the frequency domain resources occupied by the first signal actually transmitted to the receiving end are the first frequency domain resources, or in other words, the frequency domain resources occupied by the first signal actually transmitted to the receiving end belong to the first frequency domain resources, or in other words, the frequency domain resources occupied by the first signal actually transmitted to the receiving end are within the bandwidth range of the first frequency domain resources.

[0010] Based on this technical solution, the transmitting end determines that the number of second frequency domain units included in the second frequency domain resource is greater than the number of first frequency domain units included in the first frequency domain resource, based on the scheduled first frequency domain resource and the first parameters. The second frequency domain resource can map more elements compared to the first frequency domain resource. After mapping the elements to the second frequency domain resource to obtain the first signal, the first signal is sent based on the first frequency domain resource, so that the frequency domain resource actually occupied by the first signal during transmission is consistent with the frequency domain resource scheduled for transmission. In this way, when the frequency domain resources allocated to multiple frequency division multiplexing terminal devices are orthogonal or do not overlap, mapping based on the method provided in this application can avoid interference between multiple users.

[0011] Secondly, this application provides a communication method that can be applied to a second communication device. For example, the second communication device may be a terminal device or a network device, or it may be a component (such as a chip, chip system, etc.) configured in the terminal device or network device, or it may be a logic module or software capable of implementing all or part of the functions of the terminal device or network device.

[0012] For example, the method includes: receiving a first signal based on a first frequency domain resource, the first frequency domain resource including M first frequency domain units, where M is a positive integer; wherein the first signal is generated by mapping N elements onto a second frequency domain resource, the second frequency domain resource including N second frequency domain units, the N second frequency domain units being determined based on the M first frequency domain units and a first parameter, where the first parameter is greater than 0 and not 1, and N is an integer greater than M.

[0013] Based on this technical solution, the first signal received by the receiving end is obtained by the sending end after mapping the element to the second frequency domain resource, and then sent based on the scheduled first frequency domain resource. Since the sending end sends the first signal based on the scheduled first frequency domain resource, the frequency domain resource actually occupied by the first signal during transmission is consistent with the frequency domain resource scheduled for transmission. In this way, when the network device allocates orthogonal or non-overlapping frequency domain resources to multiple frequency division multiplexing terminal devices, the mapping based on the method provided in this application can avoid interference between multiple users.

[0014] In conjunction with the first and second aspects, in certain implementations of the first and second aspects, the value of N and the value of M satisfy one of the following relationships: the value of N is a first value; the value of N is obtained by rounding up the first value; the value of N is obtained by rounding down the first value; or, the value of N is obtained by rounding the first value to the nearest integer.

[0015] Wherein, when the value of the first parameter is greater than 0 and less than 1, the first value is the ratio of the value of M to the first parameter; or, when the value of the first parameter is greater than 1, the first value is the product of the value of M and the first parameter.

[0016] Optionally, the value of N and the value of M satisfy one of the following relationships: the value of (N-1) is a third value; the value of (N-1) is obtained by rounding up the third value; the value of (N-1) is obtained by rounding down the third value; or, the value of (N-1) is obtained by rounding the third value to the nearest integer.

[0017] Wherein, when the value of the first parameter is greater than 0 and less than 1, the third value is the ratio of the value of (M-1) to the first parameter; or, when the value of the first parameter is greater than 1, the third value is the product of the value of (M-1) and the first parameter.

[0018] In conjunction with the first and second aspects, in some implementations of the first and second aspects, the bandwidth of the second frequency domain resource unit is the same as or different from the bandwidth of the first frequency domain resource unit.

[0019] Optionally, when the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, the bandwidth of the first frequency domain unit and the bandwidth of the second frequency domain unit satisfy the following relationship: when the value of the first parameter is greater than 0 and less than 1, the bandwidth of the second frequency domain unit is the product of the bandwidth of the first frequency domain unit and the first parameter; or, when the value of the first parameter is greater than 1, the bandwidth of the second frequency domain unit is the ratio of the bandwidth of the first frequency domain unit to the first parameter.

[0020] In conjunction with the first and second aspects, in certain implementations of the first and second aspects, the index of the starting frequency domain unit of the first frequency domain resource is different from the index of the starting frequency domain unit of the second frequency domain resource; and / or, the index of the ending frequency domain unit of the first frequency domain resource is different from the index of the ending frequency domain unit of the second frequency domain resource.

[0021] In conjunction with the first and second aspects, in certain implementations of the first and second aspects, the index of the starting frequency domain cell of the second frequency domain resource is determined based on the index of the starting frequency domain cell of the first frequency domain resource and the first parameter.

[0022] Optionally, the index of the starting frequency domain unit of the second frequency domain resource and the index of the starting frequency domain unit of the first frequency domain resource satisfy one of the following relationships: the index of the starting frequency domain unit of the second frequency domain resource is a second value; the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding up the second value; the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding down the second value; or, the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding the second value to the nearest integer.

[0023] Wherein, when the value of the first parameter is greater than 0 and less than 1, the second value is the ratio of the index of the starting frequency domain unit of the first frequency domain resource to the first parameter; or, when the value of the first parameter is greater than 1, the second value is the product of the index of the starting frequency domain unit of the first frequency domain resource and the first parameter.

[0024] In conjunction with the first and second aspects, in certain implementations of the first and second aspects, the index of the end frequency domain unit of the second frequency domain resource is determined based on the index of the end frequency domain unit of the first frequency domain resource and the first parameter.

[0025] Optionally, the index of the end frequency domain unit of the second frequency domain resource and the index of the end frequency domain unit of the first frequency domain resource satisfy one of the following relationships: the index of the end frequency domain unit of the second frequency domain resource is a fourth value; the index of the end frequency domain unit of the second frequency domain resource is obtained by rounding the fourth value up; the index of the end frequency domain unit of the second frequency domain resource is obtained by rounding the fourth value down; or, the index of the end frequency domain unit of the second frequency domain resource is obtained by rounding the fourth value to the nearest integer.

[0026] Wherein, when the value of the first parameter is greater than 0 and less than 1, the fourth value is the ratio of the index of the end frequency domain unit of the first frequency domain resource to the first parameter; or, when the value of the first parameter is greater than 1, the fourth value is the product of the index of the end frequency domain unit of the first frequency domain resource and the first parameter.

[0027] Optionally, the first parameter is predefined or indicated by the network device.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending first information, which indicates a first parameter.

[0029] Accordingly, in conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving first information indicating a first parameter.

[0030] For example, the first communication device is a network device, the second communication device is a terminal device, the first information sent by the first communication device to the second communication device is used to indicate the first parameter, the first communication device determines the second frequency domain resource for resource mapping based on the first parameter, and the second communication device performs resource demapping on the received first signal based on the first parameter.

[0031] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending first information, which indicates a first parameter.

[0032] Accordingly, in conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving first information, the first information indicating a first parameter.

[0033] For example, the first communication device is a terminal device, the second communication device is a network device, the first information sent by the second communication device to the first communication device is used to indicate the first parameter, and the first communication device determines the second frequency domain resource for resource mapping based on the first parameter.

[0034] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0035] Accordingly, in conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0036] For example, the first communication device is a terminal device, the second communication device is a network device, the second information sent by the first communication device to the second communication device is used to indicate the second parameter, and the second communication device determines the first parameter for uplink transmission based on the second parameter.

[0037] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0038] Accordingly, in conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0039] For example, the first communication device is a network device, the second communication device is a terminal device, and the second information sent by the second communication device to the first communication device is used to indicate the second parameter. The first communication device determines the first parameter for downlink transmission based on the second parameter.

[0040] The second parameter is greater than 0 and not 1.

[0041] Optionally, the second information is carried in channel state information (CSI).

[0042] It is understandable that this second piece of information can also be carried in other uplink information.

[0043] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0044] Accordingly, in conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0045] For example, the first communication device is a terminal device, the second communication device is a network device, the first communication device sends first capability information to the second communication device indicating at least one parameter, and the second communication device determines a first parameter for uplink transmission from the at least one parameter.

[0046] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0047] Accordingly, in conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0048] For example, the first communication device is a network device, the second communication device is a terminal device, and the first capability information sent by the second communication device to the first communication device indicates at least one parameter. The first communication device determines a first parameter for downlink transmission from the at least one parameter.

[0049] Optionally, the first capability information includes the at least one parameter.

[0050] Optionally, the first capability information includes at least one capability parameter, wherein the first capability parameter among the at least one capability parameters satisfies the following relationship with the first parameter:

[0051] β = K / ρ or β = ρ / K;

[0052] Where β is the first parameter, K is the first capability parameter, K is a positive integer, and ρ is an integer greater than or equal to K.

[0053] Optionally, when the value of the first parameter is greater than 0 and less than 1, the first capability parameter and the first parameter satisfy the following relationship: β = K / ρ; when the value of the first parameter is greater than 1, the first capability parameter and the first parameter satisfy the following relationship: β = ρ / K.

[0054] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending third information, the third information being used to indicate the first frequency domain resource.

[0055] Accordingly, in conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving third information, the third information being used to indicate the first frequency domain resource.

[0056] For example, the first communication device is a network device, the second communication device is a terminal device, the third information sent by the first communication device to the second communication device is used to indicate the first frequency domain resource, the first communication device sends a first signal based on the first frequency domain resource, and the second communication device receives the first signal based on the first frequency domain resource.

[0057] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending third information, the third information being used to indicate the first frequency domain resource.

[0058] Accordingly, in conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving third information, the third information being used to indicate the first frequency domain resource.

[0059] For example, the first communication device is a terminal device, the second communication device is a network device, and the third information sent by the second communication device to the first communication device is used to indicate the first frequency domain resource. The first communication device sends a first signal based on the first frequency domain resource.

[0060] Optionally, the third information can be carried in the downlink control information (DCI).

[0061] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending second capability information, the second capability information indicating that the first communication device supports a first waveform (or FTN transmission).

[0062] Accordingly, in conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving second capability information, the second capability information indicating that the first communication device supports a first waveform (or FTN transmission).

[0063] For example, the first communication device is a terminal device, the second communication device is a network device, and the second capability information sent by the first communication device to the second communication device is used to indicate that the first communication device supports the first waveform. The second communication device configures the waveform for uplink transmission (or uplink transmission) of the first communication device based on the capability information.

[0064] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending second capability information, the second capability information indicating that the second communication device supports the first waveform (or FTN transmission).

[0065] Accordingly, in conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving second capability information, the second capability information indicating that the second communication device supports the first waveform (or FTN transmission).

[0066] For example, the first communication device is a network device, the second communication device is a terminal device, and the second capability information sent by the second communication device to the first communication device is used to indicate that the second communication device supports the first waveform. The first communication device configures the waveform for downlink transmission (or downlink reception) of the second communication device based on the capability information.

[0067] Thirdly, this application provides a communication device, including modules or units for implementing the methods of any of the above aspects and any possible implementations of any of the above aspects. It should be understood that each module or unit can implement its corresponding function by executing a computer program.

[0068] Fourthly, this application provides a communication device including a processor, the processor being configured to perform the methods described in any of the above aspects and any possible implementations of any of the above aspects.

[0069] The apparatus may further include a memory for storing instructions and data. The memory is coupled to the processor, which, when executing the instructions stored in the memory, can implement the methods described in the foregoing aspects.

[0070] The device may also include a communication interface for communicating with other devices. For example, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface.

[0071] Fifthly, this application provides a chip system including at least one processor for supporting the implementation of the functions involved in any of the above aspects and any possible implementations of any of the above aspects, such as receiving or processing data and / or information involved in the above methods.

[0072] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located within or outside the processor.

[0073] The chip system can consist of chips or include chips and other discrete components.

[0074] Sixthly, this application provides a computer-readable storage medium including a computer program that, when run on a computer, causes the computer to implement the methods in any of the above aspects and any possible implementations of any of the above aspects.

[0075] In a seventh aspect, this application provides a computer program product comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform the methods described in any of the above aspects and any possible implementations of any of the above aspects.

[0076] Eighthly, this application provides a communication system including the aforementioned terminal device and network device. The terminal device is configured to execute the methods described in the first aspect and any possible implementation thereof; the network device is configured to execute the methods described in the second aspect and any possible implementation thereof. Alternatively, the terminal device is configured to execute the methods described in the second aspect and any possible implementation thereof; the network device is configured to execute the methods described in the first aspect and any possible implementation thereof.

[0077] It should be understood that the third to eighth aspects of this application correspond to the technical solutions of the first or second aspects of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0078] Figure 1 This is a schematic diagram of the architecture of a communication system applicable to the methods provided in the embodiments of this application;

[0079] Figure 2 This is a schematic flowchart of frequency domain FTN based on inverse fast Fourier transform (IFFT).

[0080] Figure 3 This is a spectrum diagram of an FTN provided in an embodiment of this application;

[0081] Figure 4 This is a schematic diagram illustrating the relationship between frequency domain resources during frequency division multiplexing among multiple users;

[0082] Figure 5 This is a schematic flowchart of the communication method provided in the embodiments of this application;

[0083] Figure 6 This is a schematic diagram of the frequency domain resources provided in an embodiment of this application;

[0084] Figure 7 This is another schematic diagram of the frequency domain resources provided in the embodiments of this application;

[0085] Figure 8 This is the process of determining the preset relationship provided in the embodiments of this application;

[0086] Figure 9This is a schematic block diagram of the device provided in the embodiments of this application;

[0087] Figure 10 This is another schematic block diagram of the device provided in the embodiments of this application. Detailed Implementation

[0088] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0089] To facilitate understanding of the embodiments of this application, the following points are explained first:

[0090] First, in the embodiments of this application, the use of prefixes such as "first" and "second" is merely for the purpose of distinguishing and describing different things belonging to the same name category, and does not constrain the order, size, or quantity of things. For example, "first communication device" and "second communication device" are simply different devices, and do not limit the number of devices or their priority; similarly, "first information" and "second information" are simply different pieces of information, and there is no temporal sequence, size, or priority relationship between them.

[0091] Second, in the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send a first signal to a second communication device" can be understood as the destination of the first signal being the second communication device, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive a first signal from a first communication device" can be understood as the source of the first signal being the first communication device, which may include direct reception from the first communication device via the air interface or indirect reception from the first communication device via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0092] It is understandable that information may undergo necessary processing, such as encoding and modulation, before being sent from the source to the destination. After receiving information from the source, the destination can also perform corresponding processing, such as decoding and demodulation, to interpret the valid information from the source.

[0093] Third, in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates an "or" relationship between the preceding and following related objects, but it does not exclude the possibility of indicating an "and" relationship. The specific meaning can be understood in conjunction with the context. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Here, a, b, and c can be single or multiple.

[0094] Fourth, in the embodiments of this application, "instruction" can include direct instruction and indirect instruction, as well as explicit instruction and implicit instruction. The information indicated by a certain piece of information (such as the first or second information below) is called the information to be instructed. In the specific implementation process, there are many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly instruct the information to be instructed by instructing other information, where there is a correlation between the other information and the information to be instructed; or it can only instruct a part of the information to be instructed, while the other parts of the information to be instructed are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol predefined) arrangement order of various pieces of information, thereby reducing instruction overhead to a certain extent. This application does not limit the specific method of instruction.

[0095] It is understandable that, for the sender of the instruction information, the instruction information can be used to indicate the information to be indicated, and for the receiver of the instruction information, the instruction information can be used to determine the information to be indicated.

[0096] Fifth, in the embodiments of this application, descriptions such as "when," "under the circumstances," "if," and "if" all refer to the fact that the device (e.g., the first communication device or the second communication device) will make corresponding processing under certain objective circumstances. They are not time limits, nor do they require the device (e.g., the first communication device or the second communication device) to have a judgment action when it is implemented, nor do they mean that there are other limitations.

[0097] Sixth, the predefined terms in this application can be understood as: definition, pre-defined, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-firing.

[0098] The technical solutions provided in this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, sidelink (SL) communication systems, Worldwide Interoperability for Microwave Access (WiMAX) communication systems, 5th Generation (5G) mobile communication systems or new radio access technology (NR), satellite communication systems, etc. Among them, 5G mobile communication systems can include non-standalone (NSA) and / or standalone (SA) networking.

[0099] The technical solution provided in this application can also be applied to future communication systems.

[0100] The network equipment in this application can be an access network device or a core network device. The access network device is a device with wireless transceiver capabilities, such as a radio access network (RAN) device, used to provide wireless communication services and enabling terminal devices to access the wireless network. The radio access network device can be a node in the radio access network, referred to as a RAN node.

[0101] In one possible scenario, a RAN node can be a base station (BS), an evolved NodeB (eNodeB), a transmission reception point (TRP), a home evolved NodeB (or home Node B, HNB), a Wi-Fi access point (AP), a mobile switching center, or a base station in a future mobile communication system. A RAN node can also be a device that performs base station functions in device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, machine-to-machine (M2M) communication systems, and internet-to-things (IoT) communication systems. A RAN node can also be a RAN node in a nonterrestrial network (NTN), meaning that a RAN node can be deployed on a high-altitude platform or a satellite. RAN nodes can be macro base stations, micro base stations, indoor stations, relay nodes, donor nodes, etc., or radio controllers in cloud radio access network (CRAN) scenarios, or nodes in open radio access network (O-RAN or ORAN) scenarios. Optionally, RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, in V2X technology, RAN nodes can be roadside units (RSUs). Of course, RAN nodes can also be nodes in the core network.

[0102] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with different RAN nodes each implementing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0103] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in the ORAN system, CU can also be called open CU (O-CU), DU can also be called open DU (O-DU), CU-CP can also be called open CU-CP (O-CU-CP), CU-UP can also be called open CU-UP (O-CU-UP), and RU can also be called open RU (O-RU).

[0104] Any one of the CU (or CU-CP, CU-UP), DU, and RU units can be implemented through software modules, hardware modules, or a combination of software and hardware modules. That is, the wireless access network device in this application can be a virtualized device, for example, implemented through general-purpose hardware and instantiated virtualization functions, or dedicated hardware and instantiated virtualization functions. The general-purpose hardware can be a server, such as a cloud server.

[0105] The terminal equipment in this application has the ability to transmit carrier signals. The terminal equipment may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.

[0106] Terminal devices can be devices that provide voice / data connectivity to users, such as handheld devices with wireless connectivity, in-vehicle devices, etc. Currently, examples of terminal devices include: mobile phones, tablets, computers with wireless transceiver capabilities (such as laptops and PDAs), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, drones, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future public land mobile communication networks. Terminal devices in a mobile network (PLMN), etc.

[0107] Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices; they achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined, wearable smart devices include those with comprehensive functions, large sizes, and the ability to perform complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses. They also include devices focused on a specific application function that require the use of other devices, such as smart bracelets and smart jewelry for vital sign monitoring.

[0108] Furthermore, terminal devices can also be terminal devices within IoT systems. IoT is a crucial component of future information technology development, its main technological characteristic being the connection of objects to networks via communication technologies, thereby achieving intelligent networks that enable human-machine and machine-to-machine interconnection. IoT technology, for example, can achieve massive connectivity, deep coverage, and low power consumption at the terminal level through narrowband (NB) technology.

[0109] In addition, terminal devices may also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (for some terminal devices), receiving control information and downlink data from access network devices, and sending electromagnetic waves to transmit uplink data to access network devices.

[0110] The terminal device in this application can be a virtualized device, for example, implemented through general-purpose hardware and instantiated virtualization functions, or dedicated hardware and instantiated virtualization functions. The general-purpose hardware can be a server, such as a cloud server.

[0111] It should be understood that this application does not limit the specific form of wireless access network equipment and terminal equipment.

[0112] Figure 1 This is a schematic diagram of the architecture of a communication system 100 applicable to the methods provided in the embodiments of this application. For example... Figure 1 As shown, the communication system 100 includes a wireless access network 10 and a core network 20. Optionally, the communication system 100 may also include an Internet 30. The wireless access network 10 may include at least one wireless access network device (such as...). Figure 1 110a and 110b in the above), may also include at least one terminal device (such as Figure 1 (120a-120j in the middle).

[0113] Terminal devices can connect to radio access network (RAN) devices wirelessly, and RAN devices can connect to the core network wirelessly or via wired connections. Core network devices and RAN devices can be independent, separate physical devices, or they can integrate the functions of core network devices and the logical functions of RAN devices onto a single physical device. Alternatively, a single physical device can integrate some core network device functions and some RAN device functions. Terminal devices and RAN devices can be interconnected via wired or wireless connections.

[0114] Communication between wireless access network devices and terminal devices, between wireless access network devices, and between terminal devices can all be conducted using licensed spectrum, unlicensed spectrum, or a combination of both. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or a combination of both. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0115] Among them, the wireless access network equipment can be a base station deployed in the air, such as a satellite base station 110a; or it can be a base station deployed indoors, such as a micro base station or an indoor station 110b.

[0116] The terminal device can be a terminal device deployed in the air, such as... Figure 1 The 120i can be a helicopter or drone; it can also be a terminal device deployed on the ground, such as... Figure 1 The following are examples: mobile phones 120a, 120e, 120f and 120j, vehicle 120b, computer 120g, printer 120h, etc.

[0117] Wireless access network equipment and terminal equipment can be fixed or mobile. For example, wireless access network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites.

[0118] The roles of wireless access network equipment and terminal equipment can be relative. For example, Figure 1 The helicopter or drone 120i in the diagram can be configured as a mobile base station. For those 120j accessing the wireless access network 10 via 120i, 120i is a base station; however, for 110a, 120i is a terminal device, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via an interface protocol between wireless access network devices; in this case, 120i is also a base station relative to 110a. Therefore, both wireless access network devices and terminal devices can be collectively referred to as communication devices. Figure 1 110a, 110b, and 120a-120j can be referred to as communication devices with their respective corresponding functions, such as communication devices with base station functions or communication devices with terminal equipment functions.

[0119] It should be understood that Figure 1 This is just an illustration; the communication system may also include other devices, such as wireless repeaters and wireless backhaul devices. Figure 1It is not shown in the middle.

[0120] FTN technology is a non-orthogonal transmission technology. Compared with traditional Nyquist transmission technology, FTN can provide higher spectral efficiency and is considered one of the potential candidate waveforms for future communication networks. FTN technology includes time-domain FTN and frequency-domain FTN. Among them, frequency-domain FTN can also be called spectrally-efficient frequency division multiplexing (SEFDM) or frequency domain compression, or other names, which are not limited in this application.

[0121] Traditional orthogonal frequency division multiplexing (OFDM) technology possesses the characteristic of orthogonality between subcarriers, while frequency-domain FTN achieves frequency compression by sacrificing the orthogonality between subcarriers. Within the same transmission duration, when transmitting the same amount of information, frequency-domain FTN can occupy less bandwidth than OFDM; conversely, when occupying the same bandwidth, frequency-domain FTN can transmit more information than OFDM. In other words, frequency-domain FTN can improve spectral efficiency compared to OFDM.

[0122] It should be understood that the subcarrier spacing corresponding to the carrier or bandwidth part (BWP) used for communication between the transmitting and receiving ends can be configured by the network device or predefined, and different carriers or different BWPs can correspond to different subcarrier spacings. The subcarriers in this application can also be replaced with resource elements (REs).

[0123] For example, when Δf is used to represent the subcarrier spacing, the subcarrier spacing Δf satisfies: Δf = 2 μ • 15 kilohertz (kHz), where μ is an integer. For example, when μ = 0, Δf = 15 kHz; when μ = 1, Δf = 30 kHz; when μ = 2, Δf = 60 kHz; and so on.

[0124] In frequency domain FTN technology, the expression for a continuous signal in the time domain is:

[0125]

[0126] Where M is the number of subcarriers, x nLet be the modulation symbol on the nth subcarrier, β·Δf be the subcarrier spacing, β be the frequency domain compression factor (which may also have other names, but this application does not limit this), Δf = 1 / T, and T be the symbol duration. In particular, when β = 1, the frequency domain FTN degenerates into OFDM, and the subcarriers are mutually orthogonal; when 0 < β < 1, the subcarriers are no longer orthogonal.

[0127] For continuous signals in the time domain The discrete-time domain signal expression within a symbol duration T is obtained by sampling at time intervals as follows:

[0128]

[0129] in, This indicates rounding up to the nearest integer.

[0130] It can be understood that the discrete-time domain signal s k By using x n (Where n = 0, 1, ..., M-1) is obtained by performing an N-point inverse discrete Fourier transform (IDFT). IDFT can also be replaced by inverse Fourier transform or inverse fast Fourier transform (IFFT). For example, when N = 2... m When m is a positive integer, the above transformation can be achieved through the IFFT operation.

[0131] Figure 2 This is a schematic flowchart of a frequency-domain FTN based on IFFT. For example... Figure 2 As shown, the transmitting end maps the obtained M modulation symbols onto M subcarriers after performing an M-point Discrete Fourier Transform (DFT). After padding the M points in the frequency domain with zeros, N points are obtained (where N = 2^N). m (where m is a positive integer satisfying N≥M), then perform an N-point IFFT operation on these N points to obtain N points in the time domain, and then take the first N points from these N points in the time domain. Data from each point, and the previous The data from each point is upsampled, and finally a cyclic prefix (CP) is inserted or zero-padding (ZP) is applied to obtain the time-domain signal s. k The discrete-time signal s k After passing through the channel, the signal reaches the receiving end, where the receiving end performs CP or ZP removal and downsampling on the received time-domain signal to obtain... Points, and in Padding the first point with zeros gives N points. Then, performing Fast Fourier Transform (FFT), Frequency Domain Equalization (FDE), and Demapping on the N points gives M points. Finally, performing IDFT on the M points gives M points.

[0132] Among them, the discrete-time signal s k The signal reaches the receiving end after passing through the channel, including: the discrete-time domain signal s k After being converted into a time-domain analog signal, it is transmitted and then reaches the receiving end through the channel. Upsampling refers to inserting one or more zeros between two adjacent points.

[0133] It should be understood that Figure 2 The M-point DFT and M-point IDFT are optional modules. The signal at the transmitting end can also be directly mapped to a subcarrier after being encoded and modulated. The "upsampling", "downsampling", "CP / ZP insertion", and "CP / ZP removal" modules can be replaced with other modules to obtain the same result.

[0134] It should also be understood that Figure 2 The process shown is only an illustrative implementation method. This frequency domain FTN can also be implemented in other ways, and this application does not limit it.

[0135] The following example uses 12 orthogonal subcarriers allocated in the frequency domain as an example, combined with... Figure 3 The above introduction Figure 2 The relationship between the frequency domain resources actually occupied by the transmitted signal and the frequency domain resources actually mapped.

[0136] Figure 3 This is a schematic diagram of the spectrum of an FTN provided in an embodiment of this application. The subcarrier spacing of the 12 orthogonal subcarriers is Δf, and the subcarrier indices are 0 to 11. Combined with... Figure 2 Assuming 12 modulation symbols are mapped onto the 12 orthogonal subcarriers allocated above, after performing an N-point IFFT operation, if the data at N points in the time domain is transmitted within the symbol duration T = 1 / Δf, then the frequency domain resources occupied by the data at these N points are as follows: Figure 3 The frequency domain shown in (a) has 12 orthogonal subcarriers spaced Δf apart; after time-domain truncation, i.e., taking the first N points in the time domain... If data from N points is transmitted within a symbol duration of T = 1 / Δf, then the first N points... The frequency domain resources occupied by the data of each point, such as Figure 3The spectrum shown in (b) shows that the 12 subcarriers are non-orthogonal and the subcarrier spacing is β·Δf. Therefore, when transmitting M modulation symbols, the bandwidth corresponding to OFDM is (M·Δf), and the bandwidth corresponding to frequency domain FTN is (M·β·Δf), meaning frequency domain compression has been performed.

[0137] The modulation symbol may also be referred to as an information symbol, data point, or code element, etc., and this application does not limit it to any other name.

[0138] In existing cellular mobile communication systems, network devices can use DCI to indicate to terminal devices the physical resource blocks (PRBs) or resource block groups (RBGs) used for downlink transmission (e.g., the physical downlink shared channel (PDSCH)), or the PRBs or RBGs used for uplink transmission (e.g., the physical uplink shared channel (PUSCH)). After determining the resources for uplink or downlink transmission, the transmitting end performs resource mapping starting from the first subcarrier of the allocated resources during both downlink and uplink transmissions. Here, PRBs can also be replaced with resource blocks (RBs).

[0139] In multi-user frequency division multiplexing (FDM) scenarios, the resources allocated to multiple users do not overlap in the frequency domain. However, if some of the multiple users in the FDM use frequency domain FTN technology, and all of these users are mapped according to the existing subcarrier mapping method, the frequency domain resources occupied by the signals actually transmitted by the multiple users may overlap, resulting in severe inter-user interference.

[0140] Figure 4 This is a schematic diagram illustrating the relationship between frequency domain resources when multiple users perform frequency division multiplexing. For example... Figure 4As shown, UE1 and UE2 perform frequency division multiplexing. The base station allocates frequency domain resources to UE1 with subcarrier indices of 12-23, and to UE2 with subcarrier indices of 24-35. UE1 uses a frequency domain compression factor of 1 (i.e., OFDM transmission), which can be mapped to frequency domain resources with subcarrier indices of 12-23; UE2 uses a frequency domain compression factor of 0.8 (i.e., FTN transmission), which can be mapped to frequency domain resources with subcarrier indices of 24-35. Since UE2 uses FTN transmission, UE2 needs to perform frequency domain compression after completing subcarrier mapping. The frequency range of the compressed frequency domain resources is (24·0.8·Δf~35·0.8·Δf)=(19.2·Δf~28·Δf). This frequency range of compressed frequency domain resources overlaps with the frequency range of UE1 (12·Δf~23·Δf), so there will be interference between UE1 and UE2.

[0141] In view of this, embodiments of this application provide a communication method and related apparatus. In this method, a second frequency domain resource determined based on a first frequency domain resource scheduled for uplink or downlink transmission and a first parameter is used as the frequency domain resource for actual mapping of modulation symbols. After completing subcarrier mapping, the obtained signal is transmitted based on the first frequency domain resource, so that the frequency domain resource occupied by the signal during actual transmission is consistent with the first frequency domain resource. This avoids the overlap of the spectrum actually transmitted by multiple user equipments in frequency division multiplexing and reduces interference between users.

[0142] The following is combined with Figure 5 This application describes in detail the methods provided in its embodiments. The methods provided in this application can be applied to... Figure 1 The communication system shown is not limited to this embodiment.

[0143] Figure 5 This is a schematic flowchart of the communication method 500 provided in an embodiment of this application. Figure 5 The flowchart shown illustrates the method from the perspective of the interaction between the first and second communication devices, but this application does not limit the subject that performs the method. For example, Figure 5 Both the first and second communication devices can be terminal devices or network devices. These devices can be replaced by chips, chip systems, or processors that support the implementation of the method on the terminal or network device. They can also be logic modules or software capable of implementing all or part of the functions of the terminal or network device. For example, when the first communication device is a terminal device, the second communication device is a network device; or, when the first communication device is a network device, the second communication device is a terminal device; or, when the first communication device is a terminal device, the second communication device is a terminal device.

[0144] like Figure 5 As shown, method 500 may include steps S501 and S502. The steps in method 500 are described in detail below.

[0145] S501, the first communication device maps N elements onto the second frequency domain resource to generate a first signal.

[0146] The second frequency domain resource comprises N second frequency domain units, which are determined based on M first frequency domain units and a first parameter. Alternatively, the second frequency domain resource is determined based on the first frequency domain resource and the first parameter, whereby the first frequency domain resource comprises the aforementioned M first frequency domain units. Specifically, the index of the starting frequency domain unit of the second frequency domain resource is determined based on the first parameter and the index of the starting frequency domain unit of the second frequency domain resource unit; the index of the ending frequency domain unit of the second frequency domain resource is determined based on the first parameter and the index of the ending frequency domain unit of the second frequency domain resource unit; the second frequency domain units are determined based on the first frequency domain units and the first parameter; or the value of N is determined based on the value of M and the first parameter.

[0147] In this context, the frequency domain unit can be a subcarrier or a repeater (RE), etc. The bandwidth of the first frequency domain unit can be the size of the first subcarrier spacing, and the bandwidth of the second frequency domain unit can be equal to or smaller than the size of the first subcarrier spacing. For a description of the subcarrier spacing, please refer to the relevant description above; it will not be repeated here.

[0148] Both M and N are positive integers, and N is greater than M. The first parameter is greater than 0 and not 1, or in other words, the first parameter is greater than 0 and less than 1, or the first parameter is greater than 1.

[0149] Optionally, the first parameter can be predefined or indicated by the network device. For example, the first parameter can be a compression factor or a frequency domain compression factor in an FTN system.

[0150] For example, the aforementioned elements may also be referred to by other names such as modulation symbols, information symbols, or code elements. It is understood that the first communication device may perform other operations before or after mapping the N elements to the second frequency domain resource, and this application does not limit this.

[0151] S502, the first communication device sends a first signal to the second communication device based on the first frequency domain resources. Correspondingly, the second communication device receives the first signal from the first communication device based on the first frequency domain resources.

[0152] The first frequency domain resource includes M first frequency domain elements, which are frequency domain resources scheduled for uplink or downlink transmission. For example, the first frequency domain resource is a PRB or RBG indicated for uplink or downlink transmission in downlink information (e.g., DCI) sent by the network device; or, the first frequency domain resource may also be a PRB indicated by the transmitter to the receiver for sidelink transmission in sidelink communication.

[0153] It should be understood that S501 above can also be optional. The first frequency domain resource in S502 is associated with the second frequency domain resource. The specific association relationship can be referred to the description of the above embodiment.

[0154] In this embodiment, the transmitting end determines that the number of second frequency domain units included in the second frequency domain resource is greater than the number of first frequency domain units included in the first frequency domain resource based on the scheduled first frequency domain resource and the first parameter. The second frequency domain resource can map more elements compared to the first frequency domain resource. After mapping the elements to the second frequency domain resource to obtain the first signal, the first signal is sent based on the first frequency domain resource. This ensures that when the first signal is sent, the frequency domain resource actually occupied by the first signal is consistent with the scheduled frequency domain resource used for transmission. In this way, when the frequency domain resources allocated to multiple frequency division multiplexing terminal devices are orthogonal or do not overlap, mapping based on the method provided in this application can avoid interference between multiple users.

[0155] For example, given the known bandwidth of the second frequency domain unit, the first communication device and the second communication device can obtain the second frequency domain resource based on the following three implementation methods.

[0156] In a first possible implementation, the first communication device and the second communication device determine the second frequency domain resource based on the bandwidth of the second frequency domain unit, the value of N, and the index of the starting frequency domain unit of the second frequency domain resource.

[0157] Optionally, the value of N and the value of M satisfy one of the following relationships: the value of N is the first value; the value of N is obtained by rounding the first value up, or in other words, the value of N is the rounded-up value of the first value; the value of N is obtained by rounding the first value down, or in other words, the value of N is the rounded-down value of the first value; or, the value of N is obtained by rounding the first value to the nearest integer, or in other words, the value of N is the rounded-up value of the first value.

[0158] Specifically, when the first parameter is greater than 0 and less than 1, the first value is the ratio of the value of M to the first parameter; when the first parameter is greater than 1, the first value is the product of the value of M and the first parameter.

[0159] For example, assuming the first parameter β is greater than 0 and less than 1, the index of the starting frequency domain unit of the first frequency domain resource is c, the bandwidth of the first frequency domain unit is Δf, and the frequency domain range of the first frequency domain resource is [c·Δf, (c+M-1)·Δf]. Then, N and M satisfy the following relationship: N=M / β, N = round(M / β). Wherein, Indicates rounding up. Round down to the nearest integer. The round() function rounds down to the nearest integer.

[0160] Based on the relationship between the values ​​of N and M, if we let β = 0.8 and M = 12, then the value of N can be determined as: N = M / β = 12 / 0.8 = 15. N=round(M / β)==round(12 / 0.8)=15.

[0161] For example, assuming the first parameter β is greater than 1, the index of the starting frequency domain unit of the first frequency domain resource is c, the bandwidth of the first frequency domain unit is Δf, and the frequency domain range of the first frequency domain resource is [c·Δf, (c+M-1)·Δf]. Then, N and M satisfy the following relationship: N=M·β, N = round(M·β).

[0162] Based on the relationship between N and M above, if we let β = 1.25 and M = 12, then the value of N can be determined as: N = M·β = 12·1.25 = 15; if we let β = 1.2 and M = 12, then the value of N can be determined as: N=round(M·β)=round(12·1.2)=14.

[0163] Optionally, the values ​​of N and M satisfy one of the following relationships: (N-1) is the third value; (N-1) is obtained by rounding up the third value, or in other words, (N-1) is the upper floor of the third value; (N-1) is obtained by rounding down the third value, or in other words, (N-1) is the lower floor of the third value; or (N-1) is obtained by rounding the third value to the nearest integer, or in other words, (N-1) is the rounded-to-the-nearest value of the third value.

[0164] Specifically, when the value of the first parameter is greater than 0 and less than 1, the third value is the ratio of the value of (M-1) to the value of the first parameter; or, when the value of the first parameter is greater than 1, the third value is the product of the value of (M-1) and the value of the first parameter.

[0165] For example, assuming the first parameter β is greater than 0 and less than 1, the index of the starting frequency domain unit of the first frequency domain resource is c, the bandwidth of the first frequency domain unit is Δf, and the frequency domain range of the first frequency domain resource is [c·Δf, (c+M-1)·Δf]. Then, N and M satisfy the following relationship: N=(M-1) / β+1, Or N = round((M-1) / β) + 1.

[0166] Based on the relationship between the values ​​of N and M, if we let β = 11 / 15 and M = 12, then the value of N can be determined as: N = (M-1) / β + 1 = (12-1) / (11 / 15) + 1 = 16. Or N=round((M-1) / β)+1=round((12-1) / (11 / 15))+1=16.

[0167] For example, assuming the first parameter β is greater than 1, the index of the starting frequency domain unit of the first frequency domain resource is c, the bandwidth of the first frequency domain unit is Δf, and the frequency domain range of the first frequency domain resource is [c·Δf, (c+M-1)·Δf]. Then, N and M satisfy the following relationship: N=(M-1)·β+1, Or N = round((M-1)·β) + 1.

[0168] Based on the relationship between the values ​​of N and M mentioned above, if we let β = 2 and M = 12, we can determine the value of N as follows: Or N=round((M-1)·β)+1=round((12-1)·2)+1=23.

[0169] It can be understood that the network device indicates, through downlink information (e.g., DCI), the frequency range of the M consecutive subcarriers corresponding to the frequency domain resources used for uplink or downlink transmission is [c·Δf, (c+M-1)·Δf]; or, the network device indicates, through downlink information (e.g., DCI), the subcarrier or RE index range of the frequency domain resources used for uplink or downlink transmission within the carrier or resource grid is [c, c+M-1].

[0170] Optionally, the index of the starting frequency domain unit of the second frequency domain resource is different from the index of the starting frequency domain unit of the first frequency domain resource.

[0171] For example, the index of the starting frequency domain unit of the second frequency domain resource and the index of the starting frequency domain unit of the first frequency domain resource can satisfy one of the following relationships: the index of the starting frequency domain unit of the second frequency domain resource is the second value; the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding up the second value, or in other words, the index of the starting frequency domain unit of the second frequency domain resource is the upper floor of the second value; the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding down the second value, or in other words, the index of the starting frequency domain unit of the second frequency domain resource is the lower floor of the second value; or, the index of the starting frequency domain unit of the second frequency domain resource is obtained by rounding the second value to the nearest integer, or in other words, the index of the starting frequency domain unit of the second frequency domain resource is the rounded value of the second value.

[0172] Wherein, when the first parameter is greater than 0 and less than 1, the second value is the ratio of the index of the starting frequency domain unit of the first frequency domain resource to the first parameter; when the first parameter is greater than 1, the second value is the product of the index of the starting frequency domain unit of the first frequency domain resource and the first parameter.

[0173] Combining the frequency range of the first frequency domain resource as [c·Δf, (c+M-1)·Δf], assuming the first parameter β is greater than 0 and less than 1, when the index of the starting frequency domain unit of the second frequency domain resource is d, the frequency range of the second frequency domain resource can be obtained as [d·Δf, (d+N-1)·Δf]. Wherein, d and c satisfy the following relationship: d=c / β. Or d = round(c / β).

[0174] If we let β = 0.5 and c = 2, we can determine that the value of d is: d = c / β = 2 / 0.5 = 4. Or d=round(c / β)=round(2 / 0.5)=4.

[0175] Alternatively, considering the frequency range of the first frequency domain resource as [c·Δf, (c+M-1)·Δf], and assuming the first parameter β is greater than 1, when the index of the starting frequency domain unit of the second frequency domain resource is d, the frequency range of the second frequency domain resource can be obtained as [d·Δf, (d+N-1)·Δf]. Here, d and c satisfy the following relationship: d=c·β, Or d = round(c·β).

[0176] If we let β = 1.5 and c = 2, we can determine that the value of d is: d = c·β = 2·1.5 = 3. Or d=round(c·β)=round(2·1.5)=3.

[0177] In a second possible implementation, the first communication device and the second communication device determine the second frequency domain resource based on the bandwidth size of the second frequency domain unit, the index of the starting frequency domain unit of the second frequency domain resource unit, and the index of the ending frequency domain unit of the second frequency domain resource unit.

[0178] The relationship between the index of the starting frequency domain unit of the second frequency domain resource and the index of the starting frequency domain unit of the first frequency domain resource can be referred to the previous description, and will not be repeated here.

[0179] The index of the ending frequency domain unit of the second frequency domain resource is different from the index of the ending frequency domain unit of the first frequency domain resource.

[0180] Optionally, the index of the ending frequency domain unit of the second frequency domain resource and the index of the ending frequency domain unit of the first frequency domain resource satisfy one of the following relationships: the index of the ending frequency domain unit of the second frequency domain resource is obtained by rounding up the fourth value, or in other words, the index of the ending frequency domain unit of the second frequency domain resource is the rounded-up of the fourth value; the index of the ending frequency domain unit of the second frequency domain resource is obtained by rounding down the fourth value, or in other words, the index of the ending frequency domain unit of the second frequency domain resource is the rounded-down of the fourth value; or, the index of the ending frequency domain unit of the second frequency domain resource is obtained by rounding the fourth value to the nearest integer, or in other words, the index of the ending frequency domain unit of the second frequency domain resource is the rounded-up of the fourth value.

[0181] Specifically, when the first parameter is greater than 0 and less than 1, the fourth value is the ratio of the index of the end frequency domain unit of the first frequency domain resource to the first parameter; when the first parameter is greater than 1, the fourth value is the product of the index of the end frequency domain unit of the first frequency domain resource and the first parameter.

[0182] Combining the frequency range of the first frequency domain resource described above as [c·Δf, (c+M-1)·Δf], and assuming the first parameter is greater than 0 and less than 1, and assuming the first parameter is β, let a = c+M-1. When the index of the ending frequency domain unit of the second frequency domain resource is b, a and b satisfy the following relationship: b = a / β. Or b = round(a / β).

[0183] Combining the frequency domain range of the first frequency domain resource described above as [c·Δf, (c+M-1)·Δf], and assuming the first parameter is greater than 1, and assuming the first parameter is β, let a = c+M-1. When the index of the ending frequency domain unit of the second frequency domain resource is b, a and b satisfy the following relationship: b = a·β. Or b = round(a·β).

[0184] In a third possible implementation, the first communication device and the second communication device determine the second frequency domain resource based on the bandwidth of the second frequency domain unit, the value of N, and the index of the end frequency domain unit of the second frequency domain resource.

[0185] The relationship between the index of the starting frequency domain unit of the second frequency domain resource and the index of the starting frequency domain unit of the first frequency domain resource, as well as the relationship between the index of the ending frequency domain unit of the second frequency domain resource and the index of the ending frequency domain unit of the first frequency domain resource, can be referred to the previous description and will not be repeated here.

[0186] In summary, given the bandwidth of the second frequency domain unit, the first and second communication devices can determine the second frequency domain resource based on the bandwidth of the second frequency domain unit and one set of parameters from the following set:

[0187] The first group contains the indices of the starting and ending frequency domain units of the second frequency domain resource.

[0188] The second group consists of the index of the starting frequency domain cell of the second frequency domain resource and the value of N; or,

[0189] The third group consists of the index of the ending frequency domain unit of the second frequency domain resource and the value of N.

[0190] Optionally, the bandwidth of the second frequency domain unit may be the same as or different from that of the first frequency domain unit.

[0191] It can be understood that when the frequency domain unit is a subcarrier, the fact that the bandwidth of the second frequency domain unit is the same as or different from that of the first frequency domain unit means that the subcarrier spacing corresponding to the second frequency domain resource can be the same as or different from that corresponding to the first frequency domain resource.

[0192] Optionally, if the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, the bandwidth of the second frequency domain unit shall be smaller than that of the first frequency domain unit.

[0193] For example, when the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, and the first parameter is greater than 0 and less than 1, the bandwidth of the first frequency domain unit and the bandwidth of the second frequency domain unit can satisfy the following relationship: the bandwidth of the second frequency domain unit is the product of the bandwidth of the first frequency domain unit and the first parameter.

[0194] For example, when the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, and the first parameter is greater than 1, the bandwidth of the first frequency domain unit and the bandwidth of the second frequency domain unit can satisfy the following relationship: the bandwidth of the second frequency domain unit is the ratio of the bandwidth of the first frequency domain unit to the first parameter.

[0195] Referring to the example above where the bandwidth of the first frequency domain unit is Δf, when the first parameter β is greater than 0 and less than 1, the bandwidth of the second frequency domain resource unit is (Δf·β); or, when the first parameter β is greater than 1, the bandwidth of the second frequency domain resource unit is (Δf / β). It can be understood that the "·" in this application can also be replaced with "×" or "*" to represent "multiplication." For example, Δf·β can be replaced with Δf×β or Δf*β, both representing Δf multiplied by β.

[0196] One possible implementation is that when the bandwidth of the second frequency domain unit is the product or ratio of the bandwidth of the first frequency domain unit and the first parameter, the second frequency domain resource determined according to the first frequency domain resource and the first parameter belongs to the first frequency domain resource, or in other words, the second frequency domain resource is within the bandwidth range of the first frequency domain resource.

[0197] At this time, the first communication device transmits a first signal based on the first frequency domain resource, including: the first communication device transmits a first signal on the second frequency domain resource.

[0198] It can be understood that when the bandwidth of the second frequency domain unit is the product of the bandwidth of the first frequency domain unit and the first parameter, the first value used to determine the value of N is the ratio of the value of M to the first parameter; when the bandwidth of the second frequency domain unit is the ratio of the bandwidth of the first frequency domain unit to the first parameter, the first value used to determine the value of N is the product of the value of M and the first parameter.

[0199] The following example assumes that the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, the first parameter is 0.8, the bandwidth of the first frequency domain unit is equal to the first subcarrier spacing Δf, the index of the starting frequency domain unit of the first frequency domain resource is 12, and M=12. Figure 6 A schematic diagram illustrating the changes in frequency domain resources provided in the embodiments of this application.

[0200] Figure 6 This is a schematic diagram of the frequency domain resources provided in an embodiment of this application. For example... Figure 6 As shown in (a), the bandwidth of the first frequency domain unit is Δf, the index of the starting frequency domain unit of the first frequency domain resource is 12, the index of the ending frequency domain unit of the first frequency domain resource is 23, and the first frequency domain resource includes 12 subcarriers with a subcarrier spacing of Δf.

[0201] Based on the method in the first possible implementation described above, the bandwidth of the determined second frequency domain unit is 0.8·Δf, the index of the starting frequency domain unit of the second frequency domain resource is 15, N is 15, and the index of the ending frequency domain unit of the first frequency domain resource is 29. That is, the second frequency domain resource includes 15 subcarriers with a subcarrier spacing of 0.8·Δf, resulting in the following... Figure 6 The second frequency domain resource is shown in (b) of the diagram.

[0202] Another possible implementation is that when the bandwidth of the second frequency domain unit is the same as that of the first frequency domain unit, the second frequency domain resource determined according to the first frequency domain resource and the first parameter does not belong to the first frequency domain resource, or in other words, all or part of the second frequency domain resource does not overlap with the first frequency domain resource.

[0203] At this time, the first communication device transmits a first signal based on the first frequency domain resource, including: the first communication device transmits a first signal on a third frequency domain resource, wherein the third frequency domain resource belongs to the first frequency domain resource.

[0204] The third frequency domain resource is obtained based on the second frequency domain resource. The index of the starting frequency domain cell of the third frequency domain resource is the same as the index of the starting frequency domain cell of the second frequency domain resource, and the index of the ending frequency domain cell of the third frequency domain resource is the same as the index of the ending frequency domain cell of the second frequency domain resource. The third frequency domain resource includes N third frequency domain cells, which are different from the second frequency domain cells.

[0205] Optionally, when the first parameter is greater than 0 and less than 1, the bandwidth of the third frequency domain unit is the product of the bandwidth of the second frequency domain unit and the first parameter; when the first parameter is greater than 1, the bandwidth of the third frequency domain unit is the ratio of the bandwidth of the second frequency domain unit to the first parameter.

[0206] Similar to determining the second frequency domain resource, given the bandwidth of the third frequency domain cell, the third frequency domain resource can be determined based on the bandwidth of the third frequency domain cell and one set of parameters from the following set:

[0207] The first group contains the indices of the starting and ending frequency domain units of the third frequency domain resource.

[0208] The second group contains the index of the starting frequency domain cell of the third frequency domain resource and the value of N; or,

[0209] The third group consists of the index of the ending frequency domain unit of the third frequency domain resource and the value of N.

[0210] The following example uses a first parameter of 0.8, a bandwidth of the first frequency domain unit of Δf, an index of the starting frequency domain unit of the first frequency domain unit of 12, and M = 12 as an example. Figure 7 A schematic diagram illustrating the changes in frequency domain resources provided in the embodiments of this application.

[0211] Figure 7 This is another schematic diagram of the frequency domain resources provided in the embodiments of this application. For example... Figure 7As shown in (a), the bandwidth of the first frequency domain unit is Δf, the index of the starting frequency domain unit of the first frequency domain resource is 12, the index of the ending frequency domain unit of the first frequency domain resource is 23, and the first frequency domain resource includes 12 subcarriers with a subcarrier spacing of Δf.

[0212] Based on the method described above, the bandwidth of the second frequency domain unit is determined to be Δf, the index of the starting frequency domain unit of the second frequency domain resource is 15, N is 15, and the index of the ending frequency domain unit of the second frequency domain resource is 29. That is, the second frequency domain resource includes 15 subcarriers with a subcarrier spacing of Δf, resulting in the following... Figure 7 The second frequency domain resource is shown in (b) of the diagram.

[0213] In this application, N elements are actually mapped to, as shown in... Figure 7 When the first signal is obtained from the second frequency domain resource shown in (b) and then transmitted based on the first frequency domain resource, the actual frequency domain resource used to transmit the first signal is as follows: Figure 7 The third frequency domain resource is shown in (c) above. Figure 7 As shown in (c), the index of the starting frequency domain unit of the third frequency domain resource is 15, the index of the ending frequency domain unit of the third frequency domain resource is 29, the value of N is 15, and the bandwidth of the third frequency domain unit is (0.8·Δf), that is, the third frequency domain resource includes 15 subcarriers with a subcarrier spacing of 0.8·Δf.

[0214] Based on the starting frequency unit index 15, the ending frequency unit index 29, and the bandwidth of the third frequency unit (0.8·Δf), the starting frequency of the third frequency unit can be determined to be (15·0.8·Δf=12·Δf), and the ending frequency is (29·0.8·Δf=23.2·Δf). The starting frequency of the first frequency unit is (12·Δf), and the ending frequency is (23·Δf). Therefore, the third frequency unit can be considered to belong to the first frequency unit.

[0215] It should be noted that when the allocated frequency domain resources for uplink or downlink transmission correspond to multiple non-contiguous sets of frequency domain units, where each set of frequency domain units includes one or more contiguous frequency domain units, the actual mapped frequency domain range corresponding to each set of frequency domain units is determined according to method 500. For example, if the frequency domain resources for uplink or downlink transmission indicated by the network device via DCI include multiple non-contiguous RBGs, where each RBG includes multiple contiguous PRBs, then the frequency domain resource corresponding to any RBG can be understood as the first frequency domain resource in method 500. The second frequency domain resource corresponding to that RBG can be determined based on the subcarrier or RE index corresponding to each RBG and the first parameter.

[0216] Optionally, the method 500 further includes: a first communication device and a second communication device determining a first frequency domain resource.

[0217] Optionally, the method 500 further includes: the first communication device and the second communication device determining the first parameter.

[0218] The following uses a terminal device as an example of a first communication device and a network device as an example of a second communication device to describe in detail the process by which the first and second communication devices determine the first frequency domain resources and the first parameters.

[0219] Optionally, the method 500 further includes: the network device sending first information to the terminal device, the first information indicating a first parameter. Correspondingly, the terminal device receives the first information from the network device and determines the first parameter based on the first information.

[0220] This first information can be carried in higher-layer signaling, media access control (MAC) layer signaling, or physical layer signaling. For example, the first information can be carried in radio resource control (RRC) signaling, DCI, or MAC control element (CE) (abbreviated as MAC CE).

[0221] For example, when the first information is carried in the DCI, the DCI may include a dedicated field for indicating the first parameter. This dedicated field may include the first parameter or a first index corresponding to the first parameter. The first parameter and its corresponding first index can be obtained by defining a joint table of modulation and coding schemes (MCS) and parameters. Each row of this joint table corresponds to a modulation order, a channel coding rate, and a parameter value, and each row also corresponds to a row index. In this way, the network device can determine the value of the first parameter through the row index of the joint table indicated by the DCI, thereby reducing indication overhead.

[0222] Since smaller parameter values ​​may lead to poorer detection performance in higher-order MCS, the combined table can be configured to support more parameter values ​​for lower-order MCS and fewer parameter values ​​for higher-order MCS.

[0223] Table 1 shows a combined table.

[0224] Table 1

[0225]

[0226]

[0227] It is understood that the first parameter mentioned above can be parameter #1, parameter #2, parameter #3, or parameter #4. For example, when the MCS index is 0 and the first parameter is parameter #1, the first information may include row index 0. That is, the first information can indicate the first parameter through an indicator index.

[0228] Optionally, the method 500 further includes: the terminal device sending second information to the network device, the second information indicating a second parameter. Correspondingly, the network device receives the second information from the terminal device and determines the first parameter based on the second parameter. That is, the network device can use the second parameter sent by the terminal device as a reference to determine the first parameter.

[0229] The second parameter is greater than 0 and not 1. In other words, the second parameter is greater than 0 and less than 1, or greater than 1. It can be understood that the second parameter and the first parameter can be the same or different. For example, the second parameter could be a compression factor or a frequency domain compression factor in an FTN system.

[0230] Optionally, this second information can be carried in the uplink information, for example, in the CSI reported by the terminal device to the network device. It is understood that the terminal device can determine a better parameter value based on the measured channel conditions and instruct the network device accordingly. This application defines the better parameter value determined by the terminal device as the second parameter.

[0231] For example, when the second information is carried in the CSI, the CSI includes a dedicated field for indicating the second parameter, which may include the second parameter or a second index corresponding to the second parameter. The second index can be obtained through the union table shown above.

[0232] It is understood that when the second information is carried in the CSI, the CSI reported by the terminal device includes a dedicated field to indicate the second information (for example, the terminal device can determine a better parameter value based on the measured channel conditions and indicate it to the network device); or, a joint table of MCS or channel quality indicator (CQI) and parameters can be defined, where each row of the joint table corresponds to a modulation order, a channel coding rate, and a parameter value. The terminal device indicates the second parameter by indicating the row index of the table, thereby reducing indication overhead. The table in this application is not limited to the form of a table; for example, it can be a set of relationships, and the specific design can satisfy one or several rows in the table.

[0233] It is understandable that a smaller compression factor under higher-order MCS or CQI may lead to poorer detection performance. Therefore, lower-order MCS or CQI can correspond to more compression factor values, while higher-order MCS can correspond to fewer compression factor values.

[0234] Referring to Table 1, the second parameter can also be parameter #1, parameter #2, parameter #3, or parameter #4. For example, when the MCS or CQI index is 0 and the second parameter is parameter #2, the second information can include row index 1. That is, the second information can indicate the second parameter through an indicator index.

[0235] Optionally, the method 500 further includes: the terminal device sending first capability information to the network device, the first capability information indicating at least one parameter. Correspondingly, the network device receives the first capability information from the terminal device.

[0236] Optionally, each of the at least one parameter is greater than 0 and not 1, and any two of the at least one parameters are different.

[0237] It can be understood that when the number of at least one parameter is 1, the parameter indicated by the first capability information can be the first parameter indicated by the aforementioned first information.

[0238] It is understood that when there are multiple parameters, the aforementioned at least one parameter may include a first parameter and a second parameter. Alternatively, the aforementioned first parameter and second parameter are part of the at least one parameter. Or, the aforementioned first parameter is determined by the network device from the at least one parameter, and the aforementioned second parameter is determined by the terminal device from the at least one parameter.

[0239] Optionally, the first capability information includes at least one parameter. Alternatively, the first capability information includes at least one capability parameter, wherein each capability parameter satisfies a preset relationship with each of the at least one parameter; for example, the capability parameter is an OFDM time-domain oversampling factor supported by the terminal device. Alternatively, the first capability information includes at least one index, which corresponds to at least one parameter.

[0240] For example, the above-mentioned preset relationship satisfies:

[0241] β = K / ρ or β = ρ / K;

[0242] Wherein, β is a parameter among at least one parameters, K is a capability parameter among at least one capability parameter, K is a positive integer, and ρ is an integer greater than or equal to K. When β is greater than 0 and less than 1, the preset relationship satisfies: β = K / ρ. When β is greater than 1, the preset relationship satisfies: β = ρ / K.

[0243] It is understandable that for a given value of K, there can be multiple values ​​of ρ, and based on the aforementioned pre-defined relationship, there will also be multiple values ​​of β. Therefore, when there are multiple values ​​of β, the first capability information may also include one or more values ​​of ρ.

[0244] It can also be understood that when β is the first parameter in the preset relationship, K is the first capability parameter; or, when K is the first capability parameter in the preset relationship, β is the first parameter.

[0245] Since each of the at least one capability parameter satisfies the aforementioned preset relationship with each of the at least one parameter, the first information can indicate the first parameter by indicating a capability parameter and / or the value of ρ corresponding to that capability parameter, and the second information can indicate the second parameter by indicating a capability parameter and / or the value of ρ corresponding to that capability parameter.

[0246] Figure 8 This is a schematic diagram illustrating the process of determining the preset relationship provided in the embodiments of this application. The first communication device simultaneously supports OFDM transmission and frequency domain FTN transmission, and the subcarrier spacing corresponding to the carrier or BWP used for communication by the first communication device is Δf. Figure 8 As shown, the long arrows represent the time-domain information symbols after the IFFT, and the short arrows represent oversampling points. When performing an N-point IFFT, the OFDM symbol includes N time-domain symbols, and the frequency-domain FTN symbol includes... For each time-domain information symbol, in order to align the sampling points of the OFDM symbol and the frequency-domain FTN symbol after oversampling, the oversampling rate corresponding to the OFDM symbol and the oversampling rate corresponding to the frequency-domain FTN symbol must satisfy a certain relationship.

[0247] If we assume the oversampling rate corresponding to the OFDM symbol is K, then the time interval between two adjacent sampling points after oversampling is When 0 < β < 1, the time interval between two adjacent time-domain information symbols corresponding to a frequency-domain FTN symbol is: Therefore, the oversampling rate corresponding to the frequency domain FTN symbol is Thus, the value of parameter β satisfies: β = K / ρ; or, when β > 1, the time interval between two adjacent time-domain information symbols corresponding to a frequency-domain FTN symbol is... Therefore, the oversampling rate corresponding to the frequency domain FTN symbol is Therefore, the value of parameter β satisfies: β = ρ / K.

[0248] Optionally, the method 500 further includes: the terminal device sending second capability information to the network device, the second capability information indicating that the terminal device supports FTN transmission. Correspondingly, the network device receives the second capability information from the terminal device.

[0249] The second capability information and the aforementioned first capability information can be sent simultaneously or separately.

[0250] It is understood that, if the first parameter is predefined and the terminal device sends the second capability information but not the first capability information, the terminal device and the network device can use the predefined first parameter and the first frequency domain resource to determine the second frequency domain resource; or, if the terminal device sends both the first capability information and the second capability information, the terminal device and / or the network device can determine the first parameter from at least one parameter.

[0251] Optionally, the method 500 further includes: the network device sending third information to the terminal device, the third information indicating the first frequency domain resources. Correspondingly, the terminal device receives the third information from the network device.

[0252] The third information and the first information can be sent simultaneously or separately. The third information can be carried in the DCI or other signaling. For example, the network device may indicate in the DCI the PRB or RBG allocated to the terminal device for downlink reception or uplink transmission.

[0253] It is understood that the first signal sent by the first communication device to the second communication device is generally a time-domain analog signal (or a continuous signal), which can be obtained by up-converting the baseband signal. The following shows the baseband signal generation expression corresponding to the l-th OFDM symbol in a subframe when using OFDM and FTN technologies, with antenna port p, subcarrier spacing parameter configured as μ.

[0254] When using OFDM transmission, the baseband signal generation expression for the l-th OFDM symbol within a subframe is:

[0255]

[0256] in, The number of resource blocks (RBs) included in a resource cell configured with a subcarrier spacing parameter of μ. The number of subcarriers included in each RB. The values ​​for the k-th RE, l-th symbol, and p-th antenna port within the resource cell are given, and Δf is the subcarrier spacing when the subcarrier spacing parameter is configured to μ (e.g., Δf = 2). μ ·15kHz), T is the start time of the l-th symbol within a subframe. c As the basic unit of time, This represents the number of sampling points corresponding to the cyclic prefix (CP). This refers to the number of sampling points corresponding to the part of a symbol other than the CP (or the useful information part). The index of the starting frequency domain cell corresponding to the resource cell with the subcarrier spacing parameter configured as μ, where μ0 is the maximum value among one or more subcarrier spacing configuration parameters configured for the terminal device.

[0257] For example, if the index range of the resource cells in the resource grid corresponding to the M consecutive subcarriers allocated by the DCI is [c, c+M-1], then when c≤k≤c+M-1, The values ​​of correspond to M transmitted information symbols or modulation symbols, otherwise The value of is 0.

[0258] When using frequency-domain FTN transmission, the above baseband signal generation expression needs to be modified. When the first parameter is β, the baseband signal generation expression for the l-th OFDM symbol within a subframe is:

[0259]

[0260] in, or The frequency domain compression factor (or the first parameter) is β, which corresponds to the values ​​of the k-th RE, the l-th symbol, and the p-th antenna port within the time-frequency resource cell. or

[0261] For example, if the index range of the frequency domain cells of the M consecutive subcarriers corresponding to the allocated frequency domain resources indicated by the DCI (i.e., the first frequency domain resources) in the resource grid is [c, c+M-1], and the index range of the subcarriers or REs corresponding to the N subcarriers actually mapped (i.e., the second frequency domain resources) is [d, d+N-1], then when d≤k≤d+N-1, The values ​​of correspond to the N transmitted elements respectively; otherwise The value of is 0.

[0262] The above text combined Figures 1 to 8 The method provided in the embodiments of this application has been described in detail below, in conjunction with... Figure 9 and Figure 10 The apparatus provided in this application is described in detail.

[0263] Figure 9 and Figure 10 The diagram illustrates possible apparatuses provided for embodiments of this application. These apparatuses can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.

[0264] Figure 9This is a schematic block diagram of the apparatus provided in the embodiments of this application. Figure 9 As shown, the device 900 includes a processing module 910 and a transceiver module 920.

[0265] One possible design is that device 900 is used to achieve the above. Figure 5 The method embodiment shown illustrates the function of the first communication device.

[0266] For example, the processing module 910 is configured to: map N elements onto a second frequency domain resource to generate a first signal, wherein the second frequency domain resource includes N second frequency domain units, the N second frequency domain units being determined based on M first frequency domain units and a first parameter, wherein the first parameter is greater than 0 and not 1, M and N are positive integers, and N is greater than M; the transceiver module 920 is configured to: transmit the first signal based on the first frequency domain resource, wherein the first frequency domain resource includes the M first frequency domain units.

[0267] Optionally, the transceiver module 920 is further configured to: send or receive first information, wherein the first information indicates the first parameter.

[0268] Optionally, the transceiver module 920 is further configured to: send or receive second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0269] Optionally, the transceiver module 920 is further configured to: send or receive first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0270] Optionally, the transceiver module 920 is further configured to: send or receive third information, the third information being used to indicate the first frequency domain resource.

[0271] For a more detailed description of the aforementioned processing module 910 and transceiver module 920, please refer to the following: Figure 5 The relevant descriptions in the illustrated embodiments are directly obtained and will not be repeated here.

[0272] Another possible design is that device 900 is used to achieve the above. Figure 5 The function of the second communication device in the method embodiment shown.

[0273] For example, the transceiver module 920 is configured to: receive a first signal based on a first frequency domain resource, the first frequency domain resource including M first frequency domain units, where M is a positive integer; wherein, the first signal is generated by mapping N elements onto a second frequency domain resource, the second frequency domain resource including N second frequency domain units, the N second frequency domain units being determined based on the M first frequency domain units and a first parameter, where the first parameter is greater than 0 and not 1, and N is an integer greater than M.

[0274] Optionally, the transceiver module 920 is further configured to: send or receive first information, wherein the first information indicates the first parameter.

[0275] Optionally, the transceiver module 920 is further configured to: send or receive second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

[0276] Optionally, the transceiver module 920 is further configured to: send or receive first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

[0277] For a more detailed description of the aforementioned processing module 910 and transceiver module 920, please refer to [link / reference needed]. Figure 5 The relevant descriptions in the illustrated embodiments are directly obtained and will not be repeated here.

[0278] It should be noted that device 900 may include a processing module but not a receiving module. Alternatively, device 900 may include a receiving module but not a processing module. Specifically, it depends on whether the above-described scheme executed by device 900 includes both sending and receiving actions. It is understood that because device 900 has communication capabilities, it can also be called a communication device.

[0279] Figure 10 This is another schematic block diagram of the device provided in the embodiments of this application. For example... Figure 10 As shown, the device 1000 includes one or more processors 1010. The processor 1010 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the device (e.g., a terminal device, network device, or chip), execute software programs, and process data from the software programs.

[0280] Optionally, in one design, processor 1010 may include a program (also referred to as code or instructions) that can be executed on processor 1010, causing device 1000 to perform the methods performed by the first or second communication device in the above method embodiments. In yet another possible design, device 1000 includes circuitry (…). Figure 10 (Not shown), the circuit is used to implement the functions of the first or second communication device in the above method embodiments.

[0281] For example, processor 1010 can be used to execute computer programs or instructions in memory to achieve Figure 5 The steps performed by the first or second communication device in any of the embodiments shown.

[0282] Optionally, the device 1000 may include one or more memories 1020 storing programs (sometimes referred to as code or instructions) that can be run on the processor 1010, causing the device 1000 to perform the methods executed by the first or second communication device in the above embodiments.

[0283] Optionally, the processor 1010 and / or memory 1020 may also store data. The processor and memory may be configured separately or integrated together.

[0284] Optionally, the device 1000 may further include a communication interface 1030. The processor 1010, sometimes referred to as a processing unit, controls the device (e.g., a first communication device or a second communication device). The communication interface 1030, sometimes referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to implement the transceiver function of the device.

[0285] Optionally, the device 1000 also includes a communication interface 1030. The processor 1010 and the communication interface 1030 are coupled to each other. It is understood that the communication interface 1030 can be a transceiver or an input / output interface.

[0286] It is understandable that since device 1000 has communication capabilities, it can also be called a communication device.

[0287] When device 1000 is used to achieve Figure 5 In this method, the processor 1010 performs the functions of the aforementioned processing unit, and the communication interface 1030 performs the functions of the aforementioned processing module. Whether the communication interface 1030 is used for sending or receiving depends on whether the device 1000 is used to perform a sending or receiving action in the execution scheme.

[0288] It is understood that when the device 1000 is a first communication device or a second communication device, the communication interface 1030 can be a transceiver, specifically including a transmitter and a receiver, with the transmitter used to send signals and the receiver used to receive signals. When the device 1000 is a chip applied to a terminal device or network device, the communication interface 1030 can be an input / output circuit, wherein the input circuit can be used for receiving and the output interface can be used for sending.

[0289] This application also provides a computer program product that, when run on a processor, can implement the methods shown in the above method embodiments.

[0290] This application also provides a computer-readable storage medium containing computer instructions that, when executed on a processor, can implement the methods shown in the above-described method embodiments.

[0291] This application also provides a communication system, including the aforementioned first communication device and second communication device.

[0292] It should be noted that the above method embodiments can be applied to a processor, or implemented by a processor. A processor may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by software instructions.

[0293] The aforementioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0294] The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0295] The memory in this application embodiment can be volatile memory or non-volatile memory, or it can include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0296] The methods provided in the above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, they can be implemented, in whole or in part, in the form of a computer program product. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic disk), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0297] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0298] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0299] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0300] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0301] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0302] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, essentially, or the part that contributes to existing technology, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0303] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: N elements are mapped onto a second frequency domain resource to generate a first signal. The second frequency domain resource includes N second frequency domain units, which are determined based on M first frequency domain units and a first parameter. The first parameter is greater than 0 and not 1, M and N are positive integers, and N is greater than M. The first signal is transmitted based on the first frequency domain resources, wherein the first frequency domain resources include the M first frequency domain units.

2. A communication method, characterized in that, include: The first signal is received based on the first frequency domain resources, wherein the first frequency domain resources include M first frequency domain units, where M is a positive integer; The first signal is generated by mapping N elements onto a second frequency domain resource, which includes N second frequency domain units. The N second frequency domain units are determined based on the M first frequency domain units and a first parameter, where the first parameter is greater than 0 and not 1, and N is an integer greater than M.

3. The method according to claim 1 or 2, characterized in that, The value of N and the value of M satisfy one of the following relationships: The value of N is the first value; The value of N is obtained by rounding up the first value; The value of N is obtained by rounding down the first value; or, The value of N is obtained by rounding the first value to the nearest integer. Wherein, when the value of the first parameter is greater than 0 and less than 1, the first value is the ratio of the value of M to the first parameter; or, when the value of the first parameter is greater than 1, the first value is the product of the value of M and the first parameter.

4. The method according to any one of claims 1 to 3, characterized in that, The bandwidth of the second frequency domain resource unit may be the same as or different from that of the first frequency domain resource unit.

5. The method according to claim 4, characterized in that, When the bandwidth of the first frequency domain unit is different from that of the second frequency domain unit, the bandwidth of the first frequency domain unit and the bandwidth of the second frequency domain unit satisfy the following relationship: When the value of the first parameter is greater than 0 and less than 1, the bandwidth of the second frequency domain unit is the product of the bandwidth of the first frequency domain unit and the first parameter; or, when the value of the first parameter is greater than 1, the bandwidth of the second frequency domain unit is the ratio of the bandwidth of the first frequency domain unit to the first parameter.

6. The method according to any one of claims 1 to 5, characterized in that, The index of the starting frequency domain cell of the first frequency domain resource is different from the index of the starting frequency domain cell of the second frequency domain resource.

7. The method according to any one of claims 1 to 6, characterized in that, The index of the starting frequency domain cell of the second frequency domain resource is determined based on the index of the starting frequency domain cell of the first frequency domain resource and the first parameter.

8. The method according to claim 6 or 7, characterized in that, The index of the starting frequency domain cell of the second frequency domain resource and the index of the starting frequency domain cell of the first frequency domain resource satisfy one of the following relationships: The index of the starting frequency domain cell of the second frequency domain resource is the second value; The index of the starting frequency domain cell of the second frequency domain resource is obtained by rounding up the second value; The index of the starting frequency domain cell of the second frequency domain resource is obtained by rounding down the second value; or... The index of the starting frequency domain cell of the second frequency domain resource is obtained by rounding the second value to the nearest integer. Wherein, when the value of the first parameter is greater than 0 and less than 1, the second value is the ratio of the index of the starting frequency domain unit of the first frequency domain resource to the first parameter; or, when the value of the first parameter is greater than 1, the second value is the product of the index of the starting frequency domain unit of the first frequency domain resource and the first parameter.

9. The method according to any one of claims 1 to 8, characterized in that, The first parameter is predefined.

10. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Send or receive first information, the first information indicating the first parameter.

11. The method according to any one of claims 1 to 10, characterized in that, The method further includes: Sending or receiving second information, the second information indicating a second parameter, the second parameter being used to determine the first parameter.

12. The method according to claim 11, characterized in that, The second information is carried in the Channel State Information (CSI).

13. The method according to any one of claims 1 to 12, characterized in that, The method further includes: Send or receive first capability information, the first capability information indicating at least one parameter, the first parameter belonging to the at least one parameter.

14. The method according to claim 13, characterized in that, The first capability information includes at least one parameter.

15. The method according to claim 13, characterized in that, The first capability information includes at least one capability parameter, and the first capability parameter among the at least one capability parameters satisfies the following relationship with the first parameter: β = K / ρ or β = ρ / K; Where β is the first parameter, K is the first capability parameter, K is a positive integer, and ρ is an integer greater than or equal to K.

16. The method according to any one of claims 1 to 15, characterized in that, The method further includes: Sending or receiving third information, the third information being used to indicate the first frequency domain resource.

17. A communication device, characterized in that, Includes modules for implementing the method as described in any one of claims 1 to 16.

18. A communication device, characterized in that, Includes a processor for causing the communication device to implement the method as described in any one of claims 1 to 16 by executing a computer program and / or by logic circuitry.

19. The apparatus according to claim 18, characterized in that, It also includes a memory for storing computer programs and / or configuration files for the logic circuitry.

20. The apparatus according to claim 18 or 19, characterized in that, It also includes a communication interface for inputting and / or outputting signals.

21. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by a processor, the method of any one of claims 1 to 16 is performed.

22. A computer program product, characterized in that, Includes a computer program, and when the computer program is run, the method of any one of claims 1 to 16 is performed.

Images