Information transmission method and device, information receiving method and device and communication equipment

Abstract

The invention discloses an information transmission method and device, an information receiving method and device and communication equipment, and belongs to the technical field of communication, and the information transmission method comprises the steps that a transmitting end obtains an orthogonal frequency division multiplexing (OFDM) signal to be transmitted and an imitated radio frequency division multiplexing (AFDM) signal to be transmitted; and performing multiplexing transmission on the OFDM signal and the AFDM signal on a first time frequency resource.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an information transmission method, a receiving method, an apparatus and a communication device. Background Art

[0002] Affine Frequency Division Multiplexing (AFDM) is a multi-carrier modulation method that can achieve reliable communication in linear time-varying (LTV) channels. AFDM can completely separate the sub-channels of different reflection paths in the transform domain through appropriate parameter configuration. This feature is very friendly to perception services. Only channel estimation is needed to measure the reflectors in the wireless environment. The delay and Doppler shift of each sub-channel of AFDM corresponds to the distance and speed of a reflector (or reflection cluster). However, in some application scenarios, there are still many users with low mobility and no perception needs. At this time, orthogonal frequency division multiplex (OFDM) is sufficient to meet the needs. If all users use AFDM, unnecessary overhead will be generated. In this case, how to improve transmission flexibility is an urgent problem that needs to be solved. Summary of the invention

[0003] The embodiments of the present application provide an information transmission method, a receiving method, an apparatus and a communication device, which can solve the problem of how to improve the transmission flexibility for OFDM and AFDM.

[0004] In a first aspect, a method for information transmission is provided, which is performed by a sending end, and the method includes:

[0005] The transmitting end obtains the OFDM signal and AFDM signal to be transmitted;

[0006] The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on a first time-frequency resource.

[0007] In a second aspect, a method for receiving information is provided, which is performed by a receiving end, and the method includes:

[0008] The receiving end receives at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource;

[0009] The receiving end demodulates the received OFDM signal or AFDM signal.

[0010] In a third aspect, an information transmission device is provided, which is applied to a sending end and includes:

[0011] A first acquisition module, used for acquiring an OFDM signal and an AFDM signal to be transmitted;

[0012] A transmission module is used to multiplex and transmit the OFDM signal and the AFDM signal on a first time-frequency resource.

[0013] In a fourth aspect, an information receiving device is provided, which is applied to a receiving end and includes:

[0014] A receiving module, configured to receive at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource;

[0015] The demodulation module is used to demodulate the received OFDM signal or AFDM signal.

[0016] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0017] In a sixth aspect, a communication device is provided, comprising a processor and a communication interface, wherein when the communication device is a transmitting end, the processor is used to obtain an OFDM signal and an AFDM signal to be transmitted, and the communication interface is used to multiplex and transmit the OFDM signal and the AFDM signal on a first time-frequency resource; or, when the communication device is a receiving end, the communication interface is used to receive at least one of the OFDM signal and the AFDM signal multiplexed and transmitted on the first time-frequency resource; and the processor is used to demodulate the received OFDM signal or AFDM signal.

[0018] In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0019] In an eighth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect; or, the terminal can be used to execute the steps of the method described in the second aspect, and the network side device can be used to execute the steps of the method described in the first aspect.

[0020] In the ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0021] In the tenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0022] In an embodiment of the present application, after acquiring the OFDM signal and the AFDM signal to be transmitted, the transmitting end can multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource. Thus, the same time-frequency resource can be multiplexed to transmit the OFDM and AFDM signals, thereby improving transmission flexibility and meeting corresponding communication requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0024] Figure 2 It is a schematic diagram of an OFDM signal in the TF domain in an embodiment of the present application;

[0025] Figure 3 is a schematic diagram of an AFDM signal in the TF domain in an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of an equivalent channel in an embodiment of the present application;

[0027] Figure 5 is a schematic diagram of an equivalent channel truncated under ZP in an embodiment of the present application;

[0028] Figure 6 It is a schematic diagram of the structure of an embedded pilot frame used for AFDM in an embodiment of the present application;

[0029] Figure 7 is a flow chart of an information transmission method provided by an embodiment of the present application;

[0030] Figure 8 It is a schematic diagram of multiplexing transmission of AFDM signals and OFDM signals in an embodiment of the present application;

[0031] Fig. 9A It is a schematic diagram of orthogonal multiplexing transmission of AFDM signals and OFDM signals in an embodiment of the present application;

[0032] Fig. 9BIt is a schematic diagram of non-orthogonal multiplexing transmission of AFDM signals and OFDM signals in an embodiment of the present application;

[0033] Fig. 9C It is a schematic diagram of partial orthogonal multiplexing transmission of AFDM signals and OFDM signals in an embodiment of the present application;

[0034] Fig.10 It is a schematic diagram of the architecture of the sending end in an embodiment of the present application;

[0035] Fig.11 is a flow chart of an information receiving method provided by an embodiment of the present application;

[0036] Fig.12 It is a schematic diagram of the architecture of an AFDM / OFDM receiving end based on interference cancellation in an embodiment of the present application;

[0037] Fig.13 is a structural schematic diagram of an information transmission device provided in an embodiment of the present application;

[0038] Fig.14 is a structural diagram of an information receiving device provided in an embodiment of the present application;

[0039] Fig.15 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0040] Fig.16 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0041] Fig.17 It is a structural diagram of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0043] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0045] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 thGeneration, 6G) communication system.

[0046] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station can be called Node B (Node B, NB), Evolved Node B (Evolved Node B, eNB), the next generation Node B (the next generation Node B, gNB), New Radio Node B (New Radio Node B, NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, Basic Service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), home Node B (home evolved Node B, HNB), home evolved Node B (home evolved Node B), Transmission Reception Point (Transmission Reception Point, TRP) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary.

[0047] In order to facilitate understanding of the embodiments of the present application, the following contents are first described.

[0048] Orthogonal Frequency Division Multiplex (OFDM) is a classic multi-carrier modulation method. When pulse shaping (such as time domain windowing) is not performed, one subcarrier is a single-frequency signal with a time domain length equal to the OFDM symbol length, and the symbol to be sent is modulated on each subcarrier. The baseband time domain signal expression can be expressed as:

[0049]

[0050] Among them, x m represents the actual symbol sent by the mth subcarrier, which can be a common Quadrature Amplitude Modulation (QAM) symbol; s[l] represents the value of the baseband time domain signal of each OFDM symbol at the lth sampling point; M is the total number of subcarriers in the OFDM system; L is the total number of sampling points in an OFDM symbol; is the value of the basis function of the mth subcarrier at the lth sampling point, and its specific expression is:

[0051]

[0052] From the above, we can see that the OFDM system divides subcarriers completely according to frequency, and different QAM symbols are modulated on different subcarriers to achieve the purpose of orthogonal multiplexing. The schematic diagram in the TF domain is as follows Figure 2 As shown in the figure, Δt represents the time domain interval of the sampling points, 1 / Δt is the total bandwidth of the OFDM system, and NΔt is the time domain length of an OFDM symbol. In other words, the OFDM system modulates M QAM symbols into a single subcarrier with the same symbol length of NΔt and a subcarrier interval of ( Figure 2 Corresponding This is because, generally speaking, L=M).

[0053] Since the exponential function is the characteristic function of the linear time-invariant system (LTI), and one basis function (corresponding to one subcarrier) of the OFDM system is also an exponential function, the QAM symbol modulated on a subcarrier of the OFDM system, after LTI, the received signal is just the multiplication of the QAM symbol and a complex value. For example, the symbol received by the receiving end at the mth subcarrier is y m =h m x m That is to say, the receiver only needs to estimate the channel and obtain h m After the estimated value of y m and h m Do a simple division and restore to x m This process is the single-tap equalization method for OFDM system.

[0054] However, for non-LTI channels, the channel characteristic function is no longer a fixed function, and the equalization of the OFDM system becomes very complicated. At the same time, if the channel changes very quickly, such as in high-speed mobile scenarios, OFDM cannot track the channel changes well, and the demodulation performance cannot be guaranteed.

[0055] Similar to OFDM, AFDM is also a multi-carrier modulation method, but its main design motivation is to improve the performance of multi-carrier communication systems in linear time-varying systems (LTV). The basis function of the AFDM system is no longer a single-frequency signal of OFDM, but a linear frequency modulation signal similar to chirp. The specific expression of its basis function is:

[0056]

[0057] Among them, m is the subcarrier index, which also determines the starting frequency of the basis function; c 1 and c 2 are two constants that determine the characteristics of the AFDM system. Generally speaking, c2 We only need to choose a small irrational number to get the best performance, and c 1 The choice of will determine the sweep rate of the basis function, which will affect the capture of channel dynamics and have a significant impact on the input and output relationship of the signal.

[0058] Based on the definition of AFDM basis functions, the baseband time domain signal expression of the AFDM system can be expressed as:

[0059]

[0060] Formula (1.4) actually defines a new mathematical transformation, called Inverse Discrete Affine Frequency Transform (IDAFT). From the above, we can see that the AFDM system divides the subcarriers with different starting frequencies, and the basis function is a number of linear frequency modulation waves. The schematic diagram in the TF domain is as follows: Figure 3 shown. Figure 3 α in max Represents the maximum integer Doppler shift normalized to the subcarrier spacing.

[0061] IDAFT has quasi-periodicity in the time domain. For the kth period, we have:

[0062]

[0063] Based on quasi-periodicity, a Chirp-Periodic Prefix (CPP) can be designed for the AFDM system to resist inter-symbol interference (ISI):

[0064]

[0065] Among them, L cp Indicates the length of CPP.

[0066] The system implementation of AFDM depends on IDAFT and DAFT. First, IDAFT and DAFT are written in matrix form. If the discrete sampling sequence in the time domain and the sample sequence in the transform domain are respectively recorded as s = (s 0 ,s 1 ,...,s L-1 ), S=(S 0 ,S 1 ,...,S M-1 ), then their relationship can be expressed as:

[0067]

[0068] in, and are two diagonal matrices of compensation phase.

[0069] Next, if x∈C M×1 Expressed as the QAM symbol sequence to be sent, then the modulated time domain sample sequence can be expressed as:

[0070]

[0071] Therefore, the transmission and reception of AFDM can be realized with a structure similar to that of OFDM transmission and receiver. The received signal at the receiving end can be expressed as:

[0072]

[0073] Among them, Π, and They are the forward cyclic shift matrix, the Doppler frequency shift matrix, and the phase shift matrix:

[0074]

[0075]

[0076]

[0077] After matching the received signal, the output symbol estimate in the transform domain can be obtained:

[0078]

[0079] Formula (13) describes the relationship between input symbols and output symbols in AFDM. eff is the equivalent channel in the transform domain, which can be expressed as:

[0080]

[0081] Where P is the total number of scatterers that make up the channel (i.e., the path that the signal arrives on). From the above expression, we can see that the equivalent channel H eff is the subchannel H corresponding to the reflection path in space i The corresponding delay is d i .

[0082] In fact, each subchannel H i All have a strip or quasi-strip structure, depending on whether the Doppler shift is an integer multiple of the subcarrier spacing, that is, an integer Doppler shift or a fractional Doppler shift.

[0083] By optimizing the parameter c 1 , which can make H iThere is no overlap between them and they are completely separated, thus characterizing the entire channel and obtaining the maximum degree of freedom or diversity gain. eff will become like Figure 4 shape. Figure 4 In the case of Doppler frequency shift, the channel response of each path will shift left or right from its center, with a maximum shift value of ±α max , α max is the maximum integer Doppler shift.

[0084] Although Figure 4 The equivalent channel shown can fully characterize all degrees of freedom in the channel, but the input-output relationship is relatively complex, which is not friendly to the demodulation end. To address this problem, an appropriate number of zero symbols can be placed in the corresponding frame structure, that is, zero-padding (ZP), to truncate the equivalent channel into a clean strip structure. The number of zero-padding symbols is Q = (d max +1)(2(α max +ξ ν )+1)-1,ξ ν In order to compensate for the dispersion effect caused by fractional Doppler shift, the equivalent channel under ZP can be expressed as Figure 5 As shown, d represents the data symbol.

[0085] In order to assist the receiving end in estimating the channel and demodulating the data symbols, a pilot symbol P can be inserted into the AFDM data frame, such as Figure 6 As shown, Figure 6 The schematic diagram of the structure of an embedded pilot frame for AFDM is shown in Figure 1. There are at least Q zero-padding symbols between the pilot symbol and the data symbol. Combined with the ZP at the end of each frame, it can be ensured that the pilot symbol does not overlap with any other symbol, so that simple channel estimation can be performed.

[0086] The information transmission method, apparatus, terminal and network side equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0087] See also Figure 7 , Figure 7 is a flow chart of an information transmission method provided in an embodiment of the present application, the method is executed by a sending end, such as Figure 7 As shown, the method comprises the following steps:

[0088] Step 71: The transmitting end obtains the OFDM signal and the AFDM signal to be transmitted;

[0089] Step 72: The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on the first time-frequency resource.

[0090] In the embodiment of the present application, the transmitting end may be a terminal or a network side device. AFDM is mainly used to sense services and meet the communication needs of high mobility users, while OFDM is used to meet the communication needs of low mobility users.

[0091] Therefore, the same time-frequency resources can be reused to transmit OFDM and AFDM signals, thereby improving transmission flexibility and meeting corresponding communication needs.

[0092] For example, multiplexing AFDM signals and OFDM signals on the same time-frequency resources can be as follows: Figure 8 shown.

[0093] Optionally, the above step 72 may include: the transmitting end adopts at least one of the following to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource:

[0094] Orthogonal mode;

[0095] Non-orthogonal modes;

[0096] Partially orthogonal mode.

[0097] That is to say, the transmitter can use an orthogonal mode, a non-orthogonal mode, or a partially orthogonal mode to multiplex and transmit OFDM signals and AFDM signals on the same time-frequency resources.

[0098] In the embodiment of the present application, specific time-frequency resources can be emptied by filling zero symbols in the transmission symbols, thereby achieving the purpose of orthogonality / partial orthogonality.

[0099] Optionally, when the transmitting end adopts an orthogonal mode and multiplexes the OFDM signal and the AFDM signal for transmission on the first time-frequency resource, the first symbol in the OFDM signal is a zero symbol, and the resources occupied by the first symbol overlap with the resources occupied by the AFDM signal; or, the second symbol in the AFDM signal is a zero symbol, and the resources occupied by the second symbol overlap with the resources occupied by the OFDM signal.

[0100] For example, see Fig. 9A As shown, the subcarrier of AFDM is a cyclically appearing oblique line in the time-frequency domain (i.e., TF domain), which means that the TF resources occupied by each subcarrier are fixed. Therefore, the resources of the OFDM signal that overlap with the resources occupied by the AFDM signal can be emptied, that is, zero symbols are filled in the OFDM signal, and the resources occupied by this zero symbol overlap with the resources occupied by the AFDM signal, thereby realizing orthogonal multiplexing transmission of OFDM signals and AFDM signals.

[0101] Optionally, when the transmitting end adopts a non-orthogonal mode to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource, the OFDM signal and the AFDM signal are transmitted on the first time-frequency resource at the same time, that is, the OFDM transmitting end transmits the OFDM signal on the first time-frequency resource, and the AFDM transmitting end transmits the AFDM signal on the first time-frequency resource, resulting in the OFDM signal and the AFDM signal being transmitted on the first time-frequency resource at the same time. Fig. 9B shown.

[0102] It should be pointed out that when a non-orthogonal mode is used, OFDM signals and AFDM signals will be directly superimposed, resulting in mutual interference. However, thanks to the spread spectrum characteristics of the AFDM signal, one AFDM subcarrier will actually scan the entire spectrum at least once in a relatively long period of time. Therefore, the receiver can suppress the interference generated by the OFDM signal after matching the AFDM signal. On the other hand, the OFDM signal does not have the spread spectrum characteristics of the AFDM signal and may be subject to strong interference from the AFDM signal, requiring some additional interference suppression measures to improve performance.

[0103] Optionally, when the transmitting end adopts a partial orthogonal mode to multiplex the OFDM signal and the AFDM signal on the first time-frequency resource, the third symbol in the OFDM signal is a zero symbol, and the resources occupied by the third symbol overlap with part of the resources occupied by the AFDM signal; or, the fourth symbol in the AFDM signal is a zero symbol, and the resources occupied by the fourth symbol overlap with part of the resources occupied by the OFDM signal.

[0104] For example, see Fig. 9C As shown in the figure, the subcarrier of AFDM is a cyclic oblique line in the TF domain, which means that the TF resources occupied by each subcarrier are fixed. Therefore, part of the resources of the OFDM signal that overlap with the resources occupied by the AFDM signal can be emptied, that is, the resources occupied by the AFDM signal can be partially emptied, and zero symbols can be filled in the OFDM signal. The resources occupied by this zero symbol partially overlap with the resources occupied by the AFDM signal, thereby reducing the mutual interference between the OFDM signal and the AFDM signal, and realizing partial orthogonal multiplexing transmission of the OFDM signal and the AFDM signal.

[0105] Optionally, since the transmitting end is limited by the maximum transmission power, before superimposing the AFDM and OFDM signals, it is necessary to adjust the power of the two signals according to a certain ratio (corresponding to the power allocation factor). The above process of multiplexing and transmitting the OFDM signal and the AFDM signal on the first time-frequency resource may include:

[0106] The transmitting end first adjusts the transmission power of the OFDM signal and the AFDM signal according to the power allocation factor, and then multiplexes and transmits the OFDM signal and the AFDM signal on the first time-frequency resource according to the adjusted transmission power, so that normal transmission of the signal can be guaranteed.

[0107] In some embodiments, the architecture of the transmitter for multiplexing the same time-frequency resources to transmit the AFDM signal and the OFDM signal may be as follows: Fig.10 Without loss of generality, Fig.10 Only the baseband processing is shown in Fig.10 As shown, the AFDM transmitter and the OFDM transmitter each transmit corresponding QAM symbols, wherein, for the OFDM transmitter, the corresponding QAM symbols can be filled with zero symbols (Zero Padding), serial / parallel conversion, Inverse Fast Fourier Transform (IFFT) processing, adding a cyclic prefix (CP), power adjustment, etc.; for the AFDM transmitter, the corresponding QAM symbols can be filled with zero symbols (Zero Padding), serial / parallel conversion, using Compensation phase, IFFT processing, use After the two signals are superimposed and converted to parallel or serial, they are sent through the antenna. The QAM symbols can be data symbols (i.e., symbols unknown to the receiving end) or pilot symbols used for channel estimation / sensing (i.e., known symbols agreed upon by the receiving end and the transmitting end).

[0108] Compared with the AFDM or OFDM transmitter architecture in related technologies, Fig.10 The transmitter architecture shown mainly consists of the following additional modules:

[0109] Zero Padding module: The main function of this module is to fill zero symbols in the transmission symbols to empty specific time-frequency resources to achieve orthogonal / partial orthogonal purposes; for example, zero symbols can be filled according to whether orthogonal multiplexing is used and the multiplexed resource pattern, such as 9A to 9C As shown;

[0110] Power adjustment module: Since the transmitter is limited by the maximum transmit power, before superimposing the AFDM and OFDM signals, the power of the two signals needs to be adjusted according to a certain ratio (corresponding to the power allocation factor);

[0111] Signal superposition module: The transmitter can use one RF front end to send AFDM signals and OFDM signals. Therefore, the two signals need to be superimposed before being sent.

[0112] It should be noted that Fig.10 The transmitter architecture shown is not unique, and the order of the modules can be adjusted. For example: 1) the zero padding module and the serial / parallel conversion module can be interchanged; 2) the power adjustment module can be placed anywhere before the signal superposition module; 3) the parallel / serial conversion module can also be placed before the signal superposition module. In this case, independent parallel / serial conversion modules are required for the OFDM and AFDM signals respectively.

[0113] In the case where the transmitting end has multiple RF front ends, independent RF front ends can be used for OFDM signals and AFDM signals respectively. In this case, there is no need for a signal superposition module, and the OFDM signal and AFDM signal are sent through different RF front ends and antennas respectively.

[0114] In the embodiment of the present application, parameters related to OFDM signals / AFDM signals can be configured or indicated for the transmitting end to ensure the multiplexing transmission process. The above information transmission method can also include:

[0115] The sending end obtains first information, where the first information is used to configure or indicate at least one of the following:

[0116] Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources;

[0117] Power allocation factors of OFDM signals and AFDM signals; for example, the power allocation factors of OFDM signals and AFDM signals may be configured or indicated on the premise of configuring or indicating that OFDM signals and AFDM signals are multiplexed and transmitted on the same time-frequency resources;

[0118] Available resources for OFDM signals;

[0119] Available resources for AFDM signals;

[0120] Frame structure of OFDM signal;

[0121] Frame structure of AFDM signal;

[0122] Modulation information of OFDM signal;

[0123] Modulation information of AFDM signal.

[0124] In some embodiments, the first information may be generated by the transmitting end itself, or the transmitting end may receive the first information from the receiving end or other devices / nodes in the network, that is, the receiving end or other devices / nodes in the network configure / indicate the required OFDM / AFDM parameters for the transmitting end.

[0125] Optionally, the above-mentioned first information can be carried through downlink control information (Downlink Control Information, DCI), sidelink control information (Sidelink Control Information, SCI), uplink control information (Uplink Control Information, UCI) or medium access control control element (Medium Access Control Control Element, MAC CE) signaling.

[0126] Optionally, the available resources of the OFDM signal include but are not limited to at least one of the following:

[0127] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, available number of subcarriers, available subcarrier positions, available number of resource blocks (RBs), available RB positions, etc.;

[0128] Time domain resources, the time domain resources include at least one of the following: OFDM symbol length, number of available OFDM symbols, available OFDM symbol position, time domain resource division period, etc. In addition to OFDM symbol length, the time domain resources can also be calculated in time slots, milliseconds or system frame length as time units.

[0129] Optionally, the available resources of the OFDM signal may include resources filled / placed with zero symbols and resources filled / placed with non-zero symbols.

[0130] Optionally, the available resources of the AFDM signal include but are not limited to at least one of the following:

[0131] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position;

[0132] Time domain resources, the time domain resources include at least one of the following: AFDM symbol length, available AFDM symbol number, available AFDM symbol position, time domain resource division period; in addition to AFDM symbol length, the time domain resources can also be calculated in time slots, milliseconds or system frame length as time units;

[0133] Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

[0134] Optionally, the available resources of the AFDM signal may include resources filled / placed with zero symbols and resources filled / placed with non-zero symbols.

[0135] Optionally, the frame structure of the OFDM signal includes but is not limited to at least one of the following:

[0136] OFDM symbol length;

[0137] OFDM subcarrier spacing;

[0138] Number of OFDM symbols;

[0139] the number of data symbols and reference symbols;

[0140] The time domain positions occupied by data symbols and reference symbols;

[0141] The frequency domain positions occupied by data symbols and reference symbols;

[0142] How reference symbols are generated;

[0143] The length of the cyclic prefix CP.

[0144] Optionally, the frame structure of the AFDM signal includes but is not limited to at least one of the following:

[0145] AFDM symbol length;

[0146] AFDM subcarrier spacing;

[0147] Number of AFDM symbols;

[0148] the number of data symbols and reference symbols;

[0149] The time domain positions occupied by data symbols and reference symbols;

[0150] The transform domain positions occupied by data symbols and reference symbols;

[0151] How reference symbols are generated;

[0152] The length of the CPP.

[0153] Optionally, the modulation information of the OFDM signal includes but is not limited to at least one of the following:

[0154] Modulation and Coding Scheme (MCS) index;

[0155] Quadrature Amplitude Modulation (QAM) modulation order;

[0156] Forward Error Correction (FEC) coding method;

[0157] FEC encoding bit rate.

[0158] Optionally, the modulation information of the AFDM signal includes but is not limited to at least one of the following:

[0159] MCS index;

[0160] QAM modulation order;

[0161] FEC encoding method;

[0162] FEC encoding bit rate.

[0163] It should be noted that in the case where both AFDM parameters and OFDM parameters need to be indicated at the same time, it is possible to indicate whether the AFDM parameters and OFDM parameters are the same, as well as different differential values ​​or ratios, thereby saving signaling indication overhead.

[0164] For AFDM signals or parameters related to AFDM signals, they can be indicated directly or jointly indicated in the form of a preset table or a preset formula. For the preset table or formula, it can be sent through RRC signaling, UCI carried on a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) and other physical channels / signaling that can carry a large number of bits.

[0165] The specific values ​​of the AFDM signal / AFDM signal related parameters or the index corresponding to the table can be sent through physical channels / signaling such as DCI, UCI, SCI, MAC CE, etc. that carry a smaller number of bits, or can be sent through physical channels / signaling such as RRC signaling, UCI carried on PUSCH, etc. that can carry a larger number of bits.

[0166] See also Fig.11 , Fig.11 is a flow chart of an information receiving method provided in an embodiment of the present application, the method is executed by a receiving end, such as Fig.11 As shown, the method comprises the following steps:

[0167] Step 111: a receiving end receives at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource;

[0168] Step 112: The receiving end demodulates the received OFDM signal or AFDM signal.

[0169] In the embodiment of the present application, the receiving end may be a terminal or a network side device. AFDM is mainly used to sense services and meet the communication needs of high mobility users, while OFDM is used to meet the communication needs of low mobility users.

[0170] Optionally, for OFDM signals and AFDM signals that are multiplexed for transmission, the receiving end may only receive and demodulate the OFDM signal, in which case the receiving end may be regarded as an OFDM receiving end; it may only receive and demodulate the AFDM signal, in which case the receiving end may be regarded as an AFDM receiving end; it may also simultaneously receive and demodulate the OFDM signal and the AFDM signal, in which case the receiving end includes an OFDM receiving end and an AFDM receiving end.

[0171] Therefore, the same time-frequency resources can be reused to transmit OFDM and AFDM signals, thereby improving transmission flexibility and meeting corresponding communication needs.

[0172] Optionally, the OFDM signal and the AFDM signal may be multiplexed and transmitted on the first time-frequency resource by using at least one of the following:

[0173] Orthogonal mode;

[0174] Non-orthogonal modes;

[0175] Partially orthogonal mode.

[0176] That is to say, the transmitter can use an orthogonal mode, a non-orthogonal mode, or a partially orthogonal mode to multiplex and transmit OFDM signals and AFDM signals on the same time-frequency resources.

[0177] In the embodiment of the present application, when demodulating the received OFDM signal and AFDM signal, the other party's signal may be directly demodulated after being regarded as interference and noise, or demodulated based on the interference elimination method. The above demodulation of the received OFDM signal or AFDM signal may include at least one of the following:

[0178] 1) The receiving end regards the received OFDM signal as an interference signal and demodulates the received AFDM signal, and regards the received AFDM signal as an interference signal and demodulates the received OFDM signal. This can simplify the signal demodulation process.

[0179] Optionally, under 1), in order to reduce interference, the receiving end may receive signals only on resources where the target signal exists according to the resource pattern, such as receiving signals only on resources where OFDM signals or AFDM signals exist.

[0180] 2) The receiving end demodulates the received OFDM and AFDM signals based on the interference elimination method. In this way, not only can the interference of the AFDM signal be reduced, but the AFDM signal can also be used for channel estimation and equalization, assisting the OFDM signal to be demodulated more accurately under the time-varying channel.

[0181] Optionally, the process of demodulating the received OFDM signal and AFDM signal based on the interference elimination method may include:

[0182] The receiving end regards the OFDM signal as an interference signal, demodulates the AFDM signal, obtains the pilot symbol of the AFDM signal, performs AFDM channel estimation according to the pilot symbol of the AFDM signal, obtains a first channel estimation value, and equalizes the AFDM signal according to the first channel estimation value, performs symbol decision on the subcarrier with the signal, and obtains the QAM data symbol modulated on the AFDM;

[0183] The receiving end reconstructs the AFDM transmission signal using the pilot symbol of the AFDM signal and the QAM data symbol based on the first channel estimation value, and deletes the AFDM transmission signal from the received signal of the receiving end to obtain a first signal;

[0184] The receiving end demodulates the first signal to obtain the pilot symbol of the OFDM signal, equalizes the OFDM signal, and performs symbol decision on the subcarrier with the signal to obtain the QAM data symbol modulated on the OFDM.

[0185] Optionally, the equalizing of the OFDM signal may include:

[0186] The receiving end equalizes the OFDM signal according to the second channel estimation value; wherein the second channel estimation value can be any one of the following: the first channel estimation value, the third channel estimation value, the weighted value of the first channel estimation value and the third channel estimation value; the third channel estimation value is obtained by performing channel estimation of OFDM. That is to say, before equalizing the OFDM signal, the channel estimation value of OFDM can be converted into the channel estimation value of AFDM, and the channel estimation values ​​of OFDM and AFDM are comprehensively considered (such as weighted) as the channel estimation value used in equalization; or, channel equalization is performed only according to the channel estimation value of AFDM, and channel estimation of OFDM is not performed.

[0187] For example, the AFDM / OFDM receiver architecture based on interference cancellation can be as follows: Fig.12 Without loss of generality, Fig.12 Only the baseband processing is shown in Fig.12 As shown, the process of collaborative demodulation between the AFDM receiving end and the OFDM receiving end includes:

[0188] S1: The AFDM receiver treats the OFDM signal as interference and demodulates the AFDM signal, such as by serial / parallel conversion, CPP removal, and Processing, FFT processing, based on After processing, parallel / serial conversion, etc., to obtain the pilot symbol of AFDM, the channel estimation of AFDM is performed, and then the obtained channel estimation value is used for equalization, and then symbol decision is performed on the subcarrier with signal according to the actual resource allocation pattern to obtain the QAM data symbol modulated on AFDM;

[0189] S2: The AFDM receiver reconstructs the AFDM transmission signal using the obtained QAM data symbols and the corresponding pilot symbols according to the channel estimation value, and then deletes / subtracts them from the received signal to obtain the received signal after interference cancellation;

[0190] S3: The OFDM receiver demodulates the received signal after interference elimination, such as serial / parallel conversion, CP removal, FFT processing, parallel / serial conversion, etc., to obtain OFDM pilot symbols, perform OFDM channel estimation, and equalize the OFDM signal. Finally, according to the actual resource allocation pattern, symbol decision is made on the subcarrier with signal to obtain QAM data symbols modulated on OFDM.

[0191] In this way, with the help of Fig.12 The interference cancellation-based receiving-end architecture shown can not only reduce the interference of the AFDM signal, but also use the AFDM signal for channel estimation and equalization, thereby assisting the OFDM signal in more accurate demodulation under a time-varying channel.

[0192] In the embodiment of the present application, parameters related to OFDM signals / AFDM signals can be configured or indicated for the receiving end to ensure the signal reception process. The above information receiving method can also include:

[0193] The receiving end obtains second information, where the second information is used to configure or indicate at least one of the following:

[0194] Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources;

[0195] Power allocation factors of OFDM signals and AFDM signals; for example, the power allocation factors of OFDM signals and AFDM signals may be configured or indicated on the premise of configuring or indicating that OFDM signals and AFDM signals are multiplexed and transmitted on the same time-frequency resources;

[0196] Available resources for OFDM signals;

[0197] Available resources for AFDM signals;

[0198] Frame structure of OFDM signal;

[0199] Frame structure of AFDM signal;

[0200] Modulation information of OFDM signal;

[0201] Modulation information of AFDM signal.

[0202] In some embodiments, the second information can be generated by the receiving end itself, or the receiving end can receive the second information from the transmitting end or other devices / nodes in the network, that is, the transmitting end or other devices / nodes in the network configure / indicate the required OFDM / AFDM parameters for the receiving end.

[0203] Optionally, the second information mentioned above may be carried by downlink control information DCI, SCI, uplink control information UCI or MACCE signaling.

[0204] Optionally, the available resources of the OFDM signal include but are not limited to at least one of the following:

[0205] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, number of available subcarriers, available subcarrier positions, number of available RBs, available RB positions, etc.;

[0206] Time domain resources, the time domain resources include at least one of the following: OFDM symbol length, number of available OFDM symbols, available OFDM symbol position, time domain resource division period, etc. In addition to OFDM symbol length, the time domain resources can also be calculated in time slots, milliseconds or system frame length as time units.

[0207] Optionally, the available resources of the AFDM signal include but are not limited to at least one of the following:

[0208] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position;

[0209] Time domain resources, the time domain resources include at least one of the following: AFDM symbol length, available AFDM symbol number, available AFDM symbol position, time domain resource division period; in addition to AFDM symbol length, the time domain resources can also be calculated in time slots, milliseconds or system frame length as time units;

[0210] Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

[0211] Optionally, the frame structure of the OFDM signal includes but is not limited to at least one of the following:

[0212] OFDM symbol length;

[0213] OFDM subcarrier spacing;

[0214] Number of OFDM symbols;

[0215] the number of data symbols and reference symbols;

[0216] The time domain positions occupied by data symbols and reference symbols;

[0217] The frequency domain positions occupied by data symbols and reference symbols;

[0218] How reference symbols are generated;

[0219] The length of the cyclic prefix CP.

[0220] Optionally, the frame structure of the AFDM signal includes but is not limited to at least one of the following:

[0221] AFDM symbol length;

[0222] AFDM subcarrier spacing;

[0223] Number of AFDM symbols;

[0224] the number of data symbols and reference symbols;

[0225] The time domain positions occupied by data symbols and reference symbols;

[0226] The transform domain positions occupied by data symbols and reference symbols;

[0227] How reference symbols are generated;

[0228] The length of the CPP.

[0229] Optionally, the modulation information of the OFDM signal includes but is not limited to at least one of the following:

[0230] MCS index;

[0231] QAM modulation order;

[0232] FEC encoding method;

[0233] FEC encoding bit rate.

[0234] Optionally, the modulation information of the AFDM signal includes but is not limited to at least one of the following:

[0235] MCS index;

[0236] QAM modulation order;

[0237] FEC encoding method;

[0238] FEC encoding bit rate.

[0239] It should be noted that in the case where both AFDM parameters and OFDM parameters need to be indicated at the same time, it is possible to indicate whether the AFDM parameters and OFDM parameters are the same, as well as different differential values ​​or ratios, thereby saving signaling indication overhead.

[0240] For AFDM signals or parameters related to AFDM signals, they can be indicated directly or jointly indicated in the form of a preset table or a preset formula. For the preset table or formula, it can be sent through RRC signaling, UCI carried on a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) and other physical channels / signaling that can carry a large number of bits.

[0241] The specific values ​​of the AFDM signal / AFDM signal related parameters or the index corresponding to the table can be sent through physical channels / signaling such as DCI, UCI, SCI, MAC CE, etc. that carry a smaller number of bits, or can be sent through physical channels / signaling such as RRC signaling, UCI carried on PUSCH, etc. that can carry a larger number of bits.

[0242] Optionally, in order to achieve accurate demodulation, the above information receiving method may further include:

[0243] The receiving end obtains third information, where the third information is used to configure or indicate at least one of the following:

[0244] Whether interference elimination is used in demodulation of OFDM and AFDM signals;

[0245] Demodulation order of OFDM and AFDM signals;

[0246] Power allocation factors for OFDM and AFDM signals;

[0247] Weighting factors for channel estimation values ​​of OFDM signals and AFDM signals;

[0248] The relationship between the weighting factors of the channel estimation values ​​of the OFDM signal and the AFDM signal and the power allocation factors of the OFDM signal and the AFDM signal.

[0249] Optionally, the third information can be generated by the receiving end itself, or the receiving end can receive the third information from the sending end or other devices / nodes in the network, that is, the sending end or other devices / nodes in the network configure / indicate the required OFDM / AFDM parameters for the receiving end.

[0250] Optionally, the third information mentioned above may be carried via downlink control information DCI, SCI, uplink control information UCI or MACCE signaling.

[0251] The information transmission method provided in the embodiment of the present application can be executed by an information transmission device. In the embodiment of the present application, the information transmission device provided in the embodiment of the present application is described by taking the information transmission method executed by the information transmission device as an example.

[0252] See also Fig.13 , Fig.13 1 is a schematic diagram of the structure of an information transmission device provided in an embodiment of the present application, and the device is applied to a sending end, and the sending end is, for example, a terminal or a network side device. Fig.13 As shown, the information transmission device 130 includes:

[0253] A first acquisition module 131 is used to acquire an OFDM signal and an AFDM signal to be transmitted;

[0254] The transmission module 132 is used to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource.

[0255] Optionally, the transmission module 132 is specifically configured to: adopt at least one of the following items to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource:

[0256] Orthogonal mode;

[0257] Non-orthogonal modes;

[0258] Partially orthogonal mode.

[0259] Optionally, when the transmitting end adopts the orthogonal mode and multiplexes the OFDM signal and the AFDM signal for transmission on the first time-frequency resource, the first symbol in the OFDM signal is a zero symbol, and the resources occupied by the first symbol overlap with the resources occupied by the AFDM signal; or, the second symbol in the AFDM signal is a zero symbol, and the resources occupied by the second symbol overlap with the resources occupied by the OFDM signal.

[0260] Optionally, when the transmitting end adopts a non-orthogonal mode to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource, the OFDM signal and the AFDM signal are transmitted on the first time-frequency resource at the same time.

[0261] Optionally, when the transmitting end adopts a partial orthogonal mode to multiplex the OFDM signal and the AFDM signal for transmission on the first time-frequency resource, the third symbol in the OFDM signal is a zero symbol, and the resources occupied by the third symbol overlap with part of the resources occupied by the AFDM signal; or, the fourth symbol in the AFDM signal is a zero symbol, and the resources occupied by the fourth symbol overlap with part of the resources occupied by the OFDM signal.

[0262] Optionally, the transmission module 132 is specifically used to: adjust the transmission power of the OFDM signal and the AFDM signal according to the power allocation factor; and multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource according to the adjusted transmission power.

[0263] Optionally, the information transmission device 130 further includes:

[0264] The second acquisition module is used to acquire first information, where the first information is used to configure or indicate at least one of the following:

[0265] Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources;

[0266] Power allocation factors for OFDM and AFDM signals;

[0267] Available resources for OFDM signals;

[0268] Available resources for AFDM signals;

[0269] Frame structure of OFDM signal;

[0270] Frame structure of AFDM signal;

[0271] Modulation information of OFDM signal;

[0272] Modulation information of AFDM signal.

[0273] Optionally, the available resources of the OFDM signal include at least one of the following:

[0274] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, number of available subcarriers, available subcarrier positions, number of available resource blocks (RBs), and available RB positions;

[0275] Time domain resources, the time domain resources include at least one of the following: OFDM symbol length, the number of available OFDM symbols, the available OFDM symbol position, and the time domain resource division period.

[0276] Optionally, the available resources of the AFDM signal include at least one of the following:

[0277] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position;

[0278] Time domain resources, the time domain resources comprising at least one of the following: AFDM symbol length, number of available AFDM symbols, available AFDM symbol positions, and time domain resource division period;

[0279] Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

[0280] Optionally, the frame structure of the OFDM signal includes at least one of the following:

[0281] OFDM symbol length;

[0282] OFDM subcarrier spacing;

[0283] Number of OFDM symbols;

[0284] the number of data symbols and reference symbols;

[0285] The time domain positions occupied by data symbols and reference symbols;

[0286] The frequency domain positions occupied by data symbols and reference symbols;

[0287] How reference symbols are generated;

[0288] The length of the cyclic prefix CP.

[0289] Optionally, the frame structure of the AFDM signal includes at least one of the following:

[0290] AFDM symbol length;

[0291] AFDM subcarrier spacing;

[0292] Number of AFDM symbols;

[0293] the number of data symbols and reference symbols;

[0294] The time domain positions occupied by data symbols and reference symbols;

[0295] The transform domain positions occupied by data symbols and reference symbols;

[0296] How reference symbols are generated;

[0297] The length of the CPP.

[0298] Optionally, the modulation information of the OFDM signal includes at least one of the following:

[0299] Modulation coding strategy MCS index;

[0300] Quadrature Amplitude Modulation QAM modulation order;

[0301] Forward error correction FEC coding method;

[0302] FEC encoding bit rate.

[0303] Optionally, the modulation information of the AFDM signal includes at least one of the following:

[0304] MCS index;

[0305] QAM modulation order;

[0306] FEC encoding method;

[0307] FEC encoding bit rate.

[0308] The information transmission device 130 provided in the embodiment of the present application can realize Figure 7 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0309] See also Fig.14 , Fig.14 1 is a schematic diagram of the structure of an information receiving device provided in an embodiment of the present application, and the device is applied to a receiving end, such as a terminal or a network side device. Fig.14 As shown, the information receiving device 140 includes:

[0310] The receiving module 141 is used to receive at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource;

[0311] The demodulation module 142 is used to demodulate the received OFDM signal or AFDM signal.

[0312] Optionally, the demodulation module 142 is specifically configured to perform at least one of the following:

[0313] Demodulating the received AFDM signal by treating the received OFDM signal as an interference signal, and demodulating the received OFDM signal by treating the received AFDM signal as an interference signal;

[0314] Based on the interference cancellation method, the received OFDM signal and AFDM signal are demodulated.

[0315] Optionally, when the received OFDM signal and AFDM signal are demodulated based on the interference elimination method, the demodulation module 142 is specifically used to:

[0316] Treat the OFDM signal as an interference signal, demodulate the AFDM signal, obtain a pilot symbol of the AFDM signal, perform AFDM channel estimation according to the pilot symbol of the AFDM signal, obtain a first channel estimation value, equalize the AFDM signal according to the first channel estimation value, perform symbol decision on a subcarrier with a signal, and obtain a QAM data symbol modulated on the AFDM;

[0317] Based on the first channel estimation value, reconstruct the AFDM transmission signal using the pilot symbol of the AFDM signal and the QAM data symbol, and delete the AFDM transmission signal from the received signal of the receiving end to obtain a first signal;

[0318] The first signal is demodulated to obtain the pilot symbol of the OFDM signal, the OFDM signal is equalized, and symbol decision is performed on the subcarrier with the signal to obtain the QAM data symbol modulated on the OFDM.

[0319] Optionally, when the OFDM signal is equalized, the demodulation module 142 is specifically used to: equalize the OFDM signal according to a second channel estimation value; the second channel estimation value is any one of the following: the first channel estimation value, the third channel estimation value, and a weighted value of the first channel estimation value and the third channel estimation value; wherein the third channel estimation value is obtained by performing OFDM channel estimation.

[0320] Optionally, the information receiving device 140 further includes:

[0321] The third acquisition module is configured to acquire second information, where the second information is used to configure or indicate at least one of the following:

[0322] Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources;

[0323] Power allocation factors for OFDM and AFDM signals;

[0324] Available resources for OFDM signals;

[0325] Available resources for AFDM signals;

[0326] Frame structure of OFDM signal;

[0327] Frame structure of AFDM signal;

[0328] Modulation information of OFDM signal;

[0329] Modulation information of AFDM signal.

[0330] Optionally, the available resources of the OFDM signal include at least one of the following:

[0331] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, number of available subcarriers, available subcarrier positions, number of available RBs, and available RB positions;

[0332] Time domain resources, the time domain resources include at least one of the following: OFDM symbol length, the number of available OFDM symbols, the available OFDM symbol position, and the time domain resource division period.

[0333] Optionally, the available resources of the AFDM signal include at least one of the following:

[0334] Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position;

[0335] Time domain resources, the time domain resources comprising at least one of the following: AFDM symbol length, number of available AFDM symbols, available AFDM symbol positions, and time domain resource division period;

[0336] Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

[0337] Optionally, the frame structure of the OFDM signal includes at least one of the following:

[0338] OFDM symbol length;

[0339] OFDM subcarrier spacing;

[0340] Number of OFDM symbols;

[0341] the number of data symbols and reference symbols;

[0342] The time domain positions occupied by data symbols and reference symbols;

[0343] The frequency domain positions occupied by data symbols and reference symbols;

[0344] How reference symbols are generated;

[0345] The length of CP.

[0346] Optionally, the frame structure of the AFDM signal includes at least one of the following:

[0347] AFDM symbol length;

[0348] AFDM subcarrier spacing;

[0349] Number of AFDM symbols;

[0350] the number of data symbols and reference symbols;

[0351] The time domain positions occupied by data symbols and reference symbols;

[0352] The transform domain positions occupied by data symbols and reference symbols;

[0353] How reference symbols are generated;

[0354] The length of the CPP.

[0355] Optionally, the modulation information of the OFDM signal includes at least one of the following:

[0356] MCS index;

[0357] QAM modulation order;

[0358] FEC encoding method;

[0359] FEC encoding bit rate.

[0360] Optionally, the modulation information of the AFDM signal includes at least one of the following:

[0361] MCS index;

[0362] QAM modulation order;

[0363] FEC encoding method;

[0364] FEC encoding bit rate.

[0365] Optionally, the information receiving device 140 further includes:

[0366] The fourth acquisition module is used to acquire third information, where the third information is used to configure or indicate at least one of the following:

[0367] Whether interference elimination is used in demodulation of OFDM and AFDM signals;

[0368] Demodulation order of OFDM and AFDM signals;

[0369] Power allocation factors for OFDM and AFDM signals;

[0370] Weighting factors for channel estimation values ​​of OFDM signals and AFDM signals;

[0371] The relationship between the weighting factors of the channel estimation values ​​of the OFDM signal and the AFDM signal and the power allocation factors of the OFDM signal and the AFDM signal.

[0372] The information receiving device 140 provided in the embodiment of the present application can realize Fig.11 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0373] like Fig.15As shown, the embodiment of the present application further provides a communication device 150, including a processor 151 and a memory 152, and the memory 152 stores a program or instruction that can be run on the processor 151. For example, when the communication device 150 is a transmitting end, the program or instruction is executed by the processor 151 to implement the various steps of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. When the communication device 150 is a receiving end, the program or instruction is executed by the processor 151 to implement the various steps of the above-mentioned information receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0374] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 7 or Fig.11 The steps in the method embodiment shown. This terminal embodiment corresponds to the above method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.

[0375] Specifically, Fig.16 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0376] The terminal 1600 includes but is not limited to: a radio frequency unit 1601, a network module 1602, an audio output unit 1603, an input unit 1604, a sensor 1605, a display unit 1606, a user input unit 1607, an interface unit 1608, a memory 1609 and at least some of the components of the processor 1610.

[0377] Those skilled in the art will appreciate that the terminal 1600 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1610 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.16 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0378] It should be understood that in the embodiment of the present application, the input unit 1604 may include a graphics processing unit (GPU) 16041 and a microphone 16042, and the graphics processor 16041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1606 may include a display panel 16061, and the display panel 16061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1607 includes a touch panel 16071 and at least one of other input devices 16072. The touch panel 16071 is also called a touch screen. The touch panel 16071 may include two parts: a touch detection device and a touch controller. Other input devices 16072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0379] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1601 can transmit the data to the processor 1610 for processing; in addition, the RF unit 1601 can send uplink data to the network side device. Generally, the RF unit 1601 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0380] The memory 1609 can be used to store software programs or instructions and various data. The memory 1609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1609 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0381] The processor 1610 may include one or more processing units; optionally, the processor 1610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1610.

[0382] For example, when the terminal 1600 is a transmitting end, the processor 1610 is used to obtain an OFDM signal and an AFDM signal to be transmitted; and the radio frequency unit 1601 is used to multiplex and transmit the OFDM signal and the AFDM signal on a first time-frequency resource.

[0383] When the terminal 1600 is a receiving end, the radio frequency unit 1601 is used to receive at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource; the processor 1610 is used to demodulate the received OFDM signal or AFDM signal.

[0384] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0385] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 7 or Fig.11 The steps of the method embodiment shown. The network side device embodiment corresponds to the above method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to the network side device embodiment and can achieve the same technical effect.

[0386] Specifically, the embodiment of the present application also provides a network side device. Fig.17 As shown, the network side device 170 includes: an antenna 171, a radio frequency device 172, a baseband device 173, a processor 174 and a memory 175. The antenna 171 is connected to the radio frequency device 172. In the uplink direction, the radio frequency device 172 receives information through the antenna 171 and sends the received information to the baseband device 173 for processing. In the downlink direction, the baseband device 173 processes the information to be sent and sends it to the radio frequency device 172. The radio frequency device 172 processes the received information and sends it out through the antenna 171.

[0387] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 173, which includes a baseband processor.

[0388] The baseband device 173 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.17 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 175 through a bus interface to call the program in the memory 175 to execute the network device operations shown in the above method embodiment.

[0389] The network side device may further include a network interface 176, which is, for example, a Common Public Radio Interface (CPRI).

[0390] Specifically, the network side device 170 of the embodiment of the present application further includes: instructions or programs stored in the memory 175 and executable on the processor 174, and the processor 174 calls the instructions or programs in the memory 175 to execute. Fig.13 or Fig.14 The methods executed by each module shown in the figure achieve the same technical effects, so they will not be described here to avoid repetition.

[0391] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned information transmission method embodiment are implemented, or the various processes of the above-mentioned information receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0392] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0393] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned information transmission method embodiment, or to implement the various processes of the above-mentioned information receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0394] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0395] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned information transmission method embodiment, or to implement the various processes of the above-mentioned information receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0396] An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the information transmission method as described above, and the network side device can be used to execute the steps of the information receiving method as described above; or, the network side device can be used to execute the steps of the information transmission method as described above, and the terminal can be used to execute the steps of the information receiving method as described above.

[0397] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0398] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0399] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. An information transmission method, characterized in that: include: The transmitting end obtains the orthogonal frequency division multiplexing OFDM signal and the AFDM signal to be transmitted; The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on a first time-frequency resource.

2. The method according to claim 1, characterized in that The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on a first time-frequency resource, including: The transmitting end adopts at least one of the following to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource: Orthogonal mode; Non-orthogonal modes; Partially orthogonal mode.

3. The method according to claim 2, characterized in that When the transmitting end adopts the orthogonal mode and multiplexes the OFDM signal and the AFDM signal on the first time-frequency resource for transmission, the first symbol in the OFDM signal is a zero symbol, and the resources occupied by the first symbol overlap with the resources occupied by the AFDM signal; or, the second symbol in the AFDM signal is a zero symbol, and the resources occupied by the second symbol overlap with the resources occupied by the OFDM signal; or, When the transmitting end adopts a non-orthogonal mode to multiplex and transmit the OFDM signal and the AFDM signal on the first time-frequency resource, the OFDM signal and the AFDM signal are transmitted on the first time-frequency resource at the same time; or, When the transmitting end adopts a partial orthogonal mode to multiplex the OFDM signal and the AFDM signal on the first time-frequency resource, the third symbol in the OFDM signal is a zero symbol, and the resources occupied by the third symbol overlap with part of the resources occupied by the AFDM signal; or, the fourth symbol in the AFDM signal is a zero symbol, and the resources occupied by the fourth symbol overlap with part of the resources occupied by the OFDM signal.

4. The method according to any one of claims 1 to 3, characterized in that: The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on a first time-frequency resource, including: The transmitting end adjusts the transmission power of the OFDM signal and the AFDM signal according to the power allocation factor; The transmitting end multiplexes and transmits the OFDM signal and the AFDM signal on the first time-frequency resource according to the adjusted transmit power.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: The sending end obtains first information; The first information is used to configure or indicate at least one of the following: Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources; Power allocation factors for OFDM and AFDM signals; Available resources for OFDM signals; Available resources for AFDM signals; Frame structure of OFDM signal; Frame structure of AFDM signal; Modulation information of OFDM signal; Modulation information of AFDM signal.

6. The method according to claim 5, characterized in that The available resources of the OFDM signal include at least one of the following: Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, number of available subcarriers, available subcarrier positions, number of available resource blocks (RBs), and available RB positions; Time domain resources, the time domain resources comprising at least one of the following: OFDM symbol length, number of available OFDM symbols, available OFDM symbol positions, and time domain resource division period; or, The available resources of the AFDM signal include at least one of the following: Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position; Time domain resources, the time domain resources comprising at least one of the following: AFDM symbol length, number of available AFDM symbols, available AFDM symbol positions, and time domain resource division period; Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

7. The method according to claim 5, characterized in that The frame structure of the OFDM signal includes at least one of the following: OFDM symbol length; OFDM subcarrier spacing; Number of OFDM symbols; the number of data symbols and reference symbols; The time domain positions occupied by data symbols and reference symbols; The frequency domain positions occupied by data symbols and reference symbols; How reference symbols are generated; The length of the cyclic prefix CP; or, The frame structure of the AFDM signal includes at least one of the following: AFDM symbol length; AFDM subcarrier spacing; Number of AFDM symbols; the number of data symbols and reference symbols; The time domain positions occupied by data symbols and reference symbols; The transform domain positions occupied by data symbols and reference symbols; How reference symbols are generated; The length of the Chirp cyclic prefix CPP.

8. The method according to claim 5, characterized in that The modulation information of the OFDM signal includes at least one of the following: Modulation coding strategy MCS index; Quadrature Amplitude Modulation QAM modulation order; Forward error correction FEC encoding method; FEC encoding bit rate; or, The modulation information of the AFDM signal includes at least one of the following: MCS index; QAM modulation order; FEC encoding method; FEC encoding bit rate.

9. A method for receiving information, characterized in that: include: The receiving end receives at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource; The receiving end demodulates the received OFDM signal or AFDM signal.

10. The method according to claim 9, characterized in that The receiving end demodulates the received OFDM signal or AFDM signal, including at least one of the following: The receiving end regards the received OFDM signal as an interference signal and demodulates the received AFDM signal, and regards the received AFDM signal as an interference signal and demodulates the received OFDM signal; The receiving end demodulates the received OFDM signal and AFDM signal based on an interference elimination method.

11. The method according to claim 10, characterized in that The receiving end demodulates the received OFDM signal and AFDM signal based on the interference elimination method, including: The receiving end regards the OFDM signal as an interference signal, demodulates the AFDM signal, obtains a pilot symbol of the AFDM signal, performs AFDM channel estimation according to the pilot symbol of the AFDM signal, obtains a first channel estimation value, and equalizes the AFDM signal according to the first channel estimation value, performs symbol decision on a subcarrier with a signal, and obtains a QAM data symbol modulated on the AFDM; The receiving end reconstructs the AFDM transmission signal using the pilot symbol of the AFDM signal and the QAM data symbol based on the first channel estimation value, and deletes the AFDM transmission signal from the received signal of the receiving end to obtain a first signal; The receiving end demodulates the first signal to obtain the pilot symbol of the OFDM signal, equalizes the OFDM signal, and performs symbol decision on the subcarrier with the signal to obtain the QAM data symbol modulated on the OFDM.

12. The method according to claim 11, characterized in that The equalizing the OFDM signal comprises: The receiving end equalizes the OFDM signal according to the second channel estimation value; The second channel estimation value is any one of the following: the first channel estimation value, the third channel estimation value, and a weighted value of the first channel estimation value and the third channel estimation value; wherein the third channel estimation value is obtained by performing OFDM channel estimation.

13. The method according to any one of claims 9 to 12, characterized in that: The method further comprises: The receiving end obtains second information; The second information is used to configure or indicate at least one of the following: Whether to multiplex OFDM signals and AFDM signals on the same time-frequency resources; Power allocation factors for OFDM and AFDM signals; Available resources for OFDM signals; Available resources for AFDM signals; Frame structure of OFDM signal; Frame structure of AFDM signal; Modulation information of OFDM signal; Modulation information of AFDM signal.

14. The method according to claim 13, characterized in that The available resources of the OFDM signal include at least one of the following: Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position, number of available subcarriers, available subcarrier positions, number of available RBs, and available RB positions; Time domain resources, the time domain resources comprising at least one of the following: OFDM symbol length, number of available OFDM symbols, available OFDM symbol positions, and time domain resource division period; or, The available resources of the AFDM signal include at least one of the following: Frequency domain resources, the frequency domain resources including at least one of the following: total bandwidth, frequency domain starting point position; Time domain resources, the time domain resources comprising at least one of the following: AFDM symbol length, number of available AFDM symbols, available AFDM symbol positions, and time domain resource division period; Transform domain resources, wherein the transform domain resources include at least one of the following: an AFDM subcarrier index, an AFDM subcarrier index set, an AFDM starting subcarrier index, and the number of AFDM subcarriers.

15. The method according to claim 13, characterized in that The frame structure of the OFDM signal includes at least one of the following: OFDM symbol length; OFDM subcarrier spacing; Number of OFDM symbols; the number of data symbols and reference symbols; The time domain positions occupied by data symbols and reference symbols; The frequency domain positions occupied by data symbols and reference symbols; How reference symbols are generated; The length of the CP; or, The frame structure of the AFDM signal includes at least one of the following: AFDM symbol length; AFDM subcarrier spacing; Number of AFDM symbols; the number of data symbols and reference symbols; The time domain positions occupied by data symbols and reference symbols; The transform domain positions occupied by data symbols and reference symbols; How reference symbols are generated; The length of the CPP.

16. The method according to claim 13, characterized in that The modulation information of the OFDM signal includes at least one of the following: MCS index; QAM modulation order; FEC encoding method; FEC encoding bit rate; or, The modulation information of the AFDM signal includes at least one of the following: MCS index; QAM modulation order; FEC encoding method; FEC encoding bit rate.

17. The method according to any one of claims 9 to 16, characterized in that: The method further comprises: The receiving end obtains third information; The third information is used to configure or indicate at least one of the following: Whether interference elimination is used in demodulation of OFDM and AFDM signals; Demodulation order of OFDM and AFDM signals; Power allocation factors for OFDM and AFDM signals; Weighting factors for channel estimation values ​​of OFDM signals and AFDM signals; The relationship between the weighting factors of the channel estimation values ​​of the OFDM signal and the AFDM signal and the power allocation factors of the OFDM signal and the AFDM signal.

18. An information transmission device, characterized in that: include: A first acquisition module, used for acquiring an OFDM signal and an AFDM signal to be transmitted; A transmission module is used to multiplex and transmit the OFDM signal and the AFDM signal on a first time-frequency resource.

19. An information receiving device, characterized in that: include: A receiving module, configured to receive at least one of an OFDM signal and an AFDM signal multiplexed and transmitted on a first time-frequency resource; The demodulation module is used to demodulate the received OFDM signal or AFDM signal.

20. A communication device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the information transmission method as described in any one of claims 1 to 8, or implements the steps of the information receiving method as described in any one of claims 9 to 17.

21. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the information transmission method as described in any one of claims 1 to 8, or implements the steps of the information receiving method as described in any one of claims 9 to 17.

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