Communication method, transmitter, receiver and communication system

Abstract

The invention relates to a communication method, a transmitter, a receiver and a communication system. The communication method comprises the following steps: a transmitter transmits a first OFDM symbol, wherein the first OFDM symbol comprises a sensing reference signal and a communication signal for data transmission; according to the embodiment of the invention, the first OFDM symbol can be used for sensing and communication at the same time, so that the throughput of a communication link can be improved, and the spectrum efficiency of a communication and sensing integrated system is improved.

Description

Communication method, transmitter, receiver and communication system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a transmitter, a receiver, and a communication system. Background Art

[0002] In order to implement wireless sensing, it is usually necessary to send a dedicated reference signal for sensing. For example, an Orthogonal Frequency Division Multiplexing (OFDM) symbol for sensing may be sent, and the OFDM symbol for sensing includes the reference signal for sensing.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method, a transmitter, a receiver, and a communication system.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is performed by a transmitter. The method includes:

[0006] A first OFDM symbol is transmitted, the first OFDM symbol including a perceptual reference signal and a communication signal for data transmission.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is performed by a receiver. The method includes:

[0008] A first OFDM symbol is received, the first OFDM symbol including a perceptual reference signal and a communication signal for data transmission.

[0009] According to a third aspect of an embodiment of the present disclosure, a transmitter is provided, including:

[0010] The transceiver module is configured to send a first OFDM symbol, where the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

[0011] According to a fourth aspect of the embodiments of the present disclosure, a receiver is provided, including:

[0012] The transceiver module is configured to receive a first OFDM symbol, where the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

[0013] According to a fifth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the communication device is used to execute the communication method proposed in the first aspect of the embodiment of the present disclosure.

[0014] According to a sixth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the communication device is used to execute the communication method proposed in the second aspect of the embodiment of the present disclosure.

[0015] According to the seventh aspect of the embodiment of the present disclosure, a communication system is proposed, including: a transmitter for executing the communication method proposed in the first aspect of the embodiment of the present disclosure; and a receiver for executing the communication method proposed in the second aspect of the embodiment of the present disclosure.

[0016] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method proposed in the first aspect or the second aspect of the embodiment of the present disclosure.

[0017] The first OFDM symbol of the embodiment of the present disclosure can carry both a perception reference signal and a communication signal, that is, the first OFDM symbol can be used for both wireless perception and wireless communication. In the first OFDM symbol, resources other than the perception reference signal can be used to transmit communication data, thereby improving the throughput of the communication link and the spectrum efficiency of the integrated synaesthesia system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0019] FIG1A is an exemplary schematic diagram of a plurality of consecutive OFDM symbols in the time domain according to an embodiment of the present disclosure.

[0020] FIG1B is an exemplary schematic diagram of a plurality of consecutive OFDM symbols in the time domain according to an embodiment of the present disclosure.

[0021] FIG2 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0022] FIG3 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0023] FIG4A is an exemplary schematic diagram of a pattern of nested perceptual reference signals provided according to an embodiment of the present disclosure.

[0024] [Corrected 17.10.2023 according to Rule 91] Figure 4B is an exemplary schematic diagram of the pattern of the mutual quality sensing reference signal provided according to an embodiment of the present disclosure.

[0025] FIG5 is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0026] FIG6A is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0027] FIG6B is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0028] FIG7A is an exemplary schematic diagram of the structure of a transmitter provided according to an embodiment of the present disclosure.

[0029] FIG7B is an exemplary schematic diagram of the structure of a receiver provided according to an embodiment of the present disclosure.

[0030] FIG8A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0031] FIG8B is an exemplary schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The embodiments of the present disclosure provide a communication method, a transmitter, a receiver, and a communication system.

[0033] In a first aspect, an embodiment of the present disclosure provides a communication method, performed by a transmitter, the method comprising:

[0034] A first OFDM symbol is transmitted, the first OFDM symbol including a perceptual reference signal and a communication signal for data transmission.

[0035] In the above embodiment, the first OFDM symbol includes a perception reference signal and a communication signal, that is, the first OFDM symbol can be used for perception and communication at the same time, and the resources other than the perception reference signal in the first OFDM symbol can be used to transmit communication data, thereby improving the throughput of the communication link and improving the spectrum efficiency of the integrated synaesthesia system.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first OFDM symbol includes:

[0037] L first OFDM symbols are sent, where the L first OFDM symbols are continuous in the time domain, and L is an integer greater than or equal to 1.

[0038] In the above embodiment, one or more first OFDM symbols may be continuously transmitted in the time domain.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the total length of the L first OFDM symbols is equal to the length of the second OFDM symbol.

[0040] In the above embodiment, the second OFDM symbol may be an OFDM symbol used for communication. Therefore, one or more first OFDM symbols may be transmitted within the timeframe of one second OFDM symbol (e.g., a communication OFDM symbol). On the one hand, when sensing a relatively close target, there is no need to set an excessively long cyclic prefix. By reducing the length of the cyclic prefix, multiple first OFDM symbols can be continuously transmitted within the timeframe of one communication OFDM symbol. This is equivalent to transmitting multiple sensing reference signals within the timeframe of one communication OFDM symbol, thereby performing multiple sensing measurements of the sensing target. This improves sensing accuracy, particularly for relatively close targets. Furthermore, multiple communication signals are also transmitted simultaneously, facilitating wireless communication.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0042] First information is sent to a receiver, where the first information is used by the receiver to receive the communication signal in the first OFDM symbol.

[0043] In the above embodiment, the first information may be sent to the receiver, so that the receiver may receive the communication signal in the first OFDM symbol according to the first information.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

[0045] A first parameter, used to indicate a subcarrier bandwidth of the first OFDM symbol;

[0046] A second parameter is used to indicate a rate matching pattern of the first OFDM symbol;

[0047] The power ratio is used to indicate the ratio between the average transmit power (energy per RE, EPRE) of each resource element RE in the second OFDM symbol and the average transmit power of each RE in the first OFDM symbol.

[0048] In the above embodiment, at least one of the first parameter, the second parameter and the power ratio may be sent to the receiver, so that the receiver may receive the communication signal in the first OFDM symbol according to the received parameter.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter includes at least one of the following:

[0050] The number L of the first OFDM symbols;

[0051] The cyclic prefix length M of the first OFDM symbol CP ;

[0052] The discrete Fourier transform length M of the first OFDM symbol DFT ;

[0053] The M CP With the M DFT The ratio between

[0054] The M CP and the length of the first OFDM symbol;

[0055] a subcarrier bandwidth of the first OFDM symbol;

[0056] a subcarrier bandwidth ratio, where the subcarrier bandwidth ratio is a ratio between the subcarrier bandwidth of the first OFDM symbol and the subcarrier bandwidth of the second OFDM symbol;

[0057] The logarithm of the subcarrier bandwidth ratio.

[0058] In the above embodiment, at least one of the above parameters may be sent to the receiver, and the receiver may determine the subcarrier bandwidth used by the first OFDM symbol according to the received parameters.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, the second parameter includes at least one of the following:

[0060] A set of numbers of OFDM subcarriers occupied by the perception reference signal;

[0061] A parameter used to determine the number of OFDM subcarriers occupied by the perception reference signal;

[0062] The numbered set of the first OFDM symbols in a time slot;

[0063] The number of the first OFDM symbol among L consecutive first OFDM symbols in a time slot.

[0064] In the above embodiment, at least one of the above parameters can be sent to the receiver, and the receiver can determine the resources in the first OFDM symbol that are unavailable for wireless communication based on the received parameters, thereby skipping the resource particles that are unavailable for wireless communication when receiving the communication signal, for example, skipping the resource particles occupied by the perception reference signal.

[0065] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is carried in at least one of the following:

[0066] Downlink Control Information (DCI);

[0067] Media Access Control (MAC) Control Element (CE) messages;

[0068] Radio Resource Control (RRC) messages;

[0069] Sidelink control information (SCI).

[0070] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a receiver. The method includes:

[0071] A first OFDM symbol is received, the first OFDM symbol including a perceptual reference signal and a communication signal for data transmission.

[0072] In the above embodiment, the first OFDM symbol includes a perception reference signal and a communication signal, that is, the first OFDM symbol can be used for perception and communication at the same time, and the resources other than the perception reference signal in the first OFDM symbol can be used to transmit communication data, which can improve the throughput of the communication link and improve the spectrum efficiency of the integrated synaesthesia system.

[0073] In conjunction with some embodiments of the second aspect, in some embodiments, receiving the first OFDM symbol includes:

[0074] L first OFDM symbols are received, where the L first OFDM symbols are continuous in the time domain, and L is an integer greater than or equal to 1.

[0075] In combination with some embodiments of the second aspect, in some embodiments, the total length of the L first OFDM symbols is equal to the length of the second OFDM symbol.

[0076] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0077] receiving first information sent by a transmitter;

[0078] The receiving a first OFDM symbol includes:

[0079] The communication signal in the first OFDM symbol is received according to the first information.

[0080] In the above embodiment, the receiver may receive the first information sent by the transmitter, and implement reception of the communication signal in the first OFDM symbol according to the first information.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following:

[0082] A first parameter, used to indicate a subcarrier bandwidth of the first OFDM symbol;

[0083] A second parameter is used to indicate a rate matching pattern of the first OFDM symbol;

[0084] The power ratio is used to indicate the ratio between the average transmit power of each resource element RE in the second OFDM symbol and the average transmit power of each RE in the first OFDM symbol.

[0085] In conjunction with some embodiments of the second aspect, in some embodiments, the first parameter includes at least one of the following:

[0086] The number L of the first OFDM symbols;

[0087] The cyclic prefix length M of the first OFDM symbol CP ;

[0088] The discrete Fourier transform length M of the first OFDM symbol DFT ;

[0089] The M CP With the M DFT The ratio between

[0090] The M CP and the length of the first OFDM symbol;

[0091] a subcarrier bandwidth of the first OFDM symbol;

[0092] a subcarrier bandwidth ratio, the subcarrier bandwidth ratio being a ratio between the subcarrier bandwidth of the first OFDM symbol and the subcarrier bandwidth of the communication OFDM symbol;

[0093] The logarithm of the subcarrier bandwidth ratio.

[0094] In conjunction with some embodiments of the second aspect, in some embodiments, the second parameter includes at least one of the following:

[0095] A set of numbers of OFDM subcarriers occupied by the perception reference signal;

[0096] A parameter used to determine the number of OFDM subcarriers occupied by the perception reference signal;

[0097] The numbered set of the first OFDM symbols in a time slot;

[0098] The number of the first OFDM symbol among L consecutive first OFDM symbols in a time slot.

[0099] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is carried in at least one of the following:

[0100] DCI;

[0101] MAC CE message;

[0102] RRC message;

[0103] SCI.

[0104] In a third aspect, an embodiment of the present disclosure proposes a transmitter, comprising: a transceiver module configured to send a first OFDM symbol, wherein the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

[0105] In a fourth aspect, an embodiment of the present disclosure proposes a receiver, comprising: a transceiver module, configured to receive a first OFDM symbol, wherein the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

[0106] In a fifth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the communication device is used to execute the method described in the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect.

[0107] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the communication device is used to execute the method described in the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0108] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, comprising: a transmitter for executing the method described in the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect; a receiver for executing the method described in the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0109] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when the instructions are executed on a communication device, enables the communication device to execute the method described in the first aspect or the optional implementation of the first aspect of the embodiment of the present disclosure, or the method described in the second aspect or the optional implementation of the second aspect.

[0110] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect or the optional implementation of the first aspect of the embodiment of the present disclosure, or the method described in the second aspect or the optional implementation of the second aspect.

[0111] In the tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the method described in the first aspect or the optional implementation of the first aspect of the embodiment of the present disclosure, or the method described in the second aspect or the optional implementation of the second aspect.

[0112] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in the first aspect or an optional implementation of the first aspect, or the method described in the second aspect or an optional implementation of the second aspect, of the embodiment of the present disclosure.

[0113] It is understandable that the above-mentioned transmitter, receiver, communication device, communication system, storage medium, program product, computer program, chip or chip system are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0114] The embodiments of the present disclosure provide a communication method, a transmitter, a receiver, and a communication system. In some embodiments, the transmitter may include a communication transmitter, and the receiver may include a communication receiver.

[0115] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0116] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0117] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0118] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0119] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0120] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0121] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0122] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0123] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0124] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0125] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0126] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0127] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0128] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0129] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0130] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0131] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0132] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0133] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0134] Wireless communication and wireless sensing share a high degree of similarity. Integrated Sensing and Communication (ISAC) can unite wireless communication and wireless sensing, fostering close collaboration between the two. This approach benefits both wireless communication and wireless sensing, improving both the effectiveness and reliability of wireless communication and the accuracy of wireless sensing. Furthermore, devices that support both wireless communication and wireless sensing can reduce network deployment costs.

[0135] Wireless sensing typically requires estimating the target's range, azimuth angle (such as horizontal and vertical angles), and velocity. Broadly speaking, sensing also includes wireless tracking and radio frequency identification of the target. To achieve high-precision sensing, the transmitter typically transmits a dedicated reference signal for sensing, which, for ease of description, will be referred to as a sensing reference signal. Optionally, the sensing reference signal does not carry any information or data used for communication.

[0136] It is understandable that wireless perception may include multiple perception scenarios, such as perception between terminals, perception between terminals and network devices, perception between network devices and network devices, etc.

[0137] In some embodiments, in a monostatic mode, the transmitter may transmit a sensing reference signal and estimate at least one of a distance, an angle, a speed, etc. of a sensing target by measuring an echo of the sensing reference signal.

[0138] In some embodiments, in a bistatic mode, a transmitter may transmit a sensing reference signal, and a receiver may receive and measure the sensing reference signal to estimate at least one of a distance, an angle, a speed, etc. of a sensing target.

[0139] In single-station mode, the transmitter and receiver can be located on the same device, such as the same terminal or the same network device. In dual-station mode, the transmitter and receiver can be located on different devices, such as the transmitter at the terminal and the receiver at another terminal, the transmitter at the terminal and the receiver at the network device, the transmitter at the network device and the receiver at another network device, or the transmitter at the network device and the receiver at the terminal.

[0140] For example, estimating the distance to a perceived target requires the receiver to accurately estimate the arrival time of the first echo path reflected by the perceived target (in single-station mode) or the first path scattered by the perceived target (in dual-station mode). To ensure accurate distance sensing, the sensing reference signal must have a large bandwidth, achieving high time-domain resolution and distance sensing accuracy.

[0141] It is understood that in an OFDM system, if the multipath delay spread of the wireless channel is greater than the length of the cyclic prefix (CP) in the OFDM symbol, inter-symbol interference (ISI) will occur between OFDM symbols. When the multipath delay spread of the channel is less than the length of the cyclic prefix in the OFDM symbol, inter-symbol interference (ISI) can be eliminated. Therefore, the perceived distance without ISI in an OFDM system is limited by the CP length within the OFDM symbol.

[0142] In order to expand the ISI-free perception distance range, the OFDM symbols used for perception can adopt a parameter set (numerology) different from that used for communication, that is, a subcarrier bandwidth different from that used for communication OFDM symbols, a CP length different from that used for communication OFDM symbols, a discrete Fourier transform (DFT) / inverse discrete Fourier transform (IDFT) length (number of points, size) different from that used for communication OFDM symbols, etc.

[0143] From the perspective of perception performance, the perception reference signal does not necessarily use all subcarriers of the OFDM symbol used for perception, that is, resource elements (REs).

[0144] In some embodiments, for range sensing, for example, a perceptual reference signal with a coprime pattern or a nested pattern can be used. This can achieve a large uniform degree of freedom (uDoF) and high temporal resolution in the Khatri-Rao subspace, thereby achieving high-precision range sensing. In some embodiments, a perceptual reference signal with a uniform comb pattern can be used.

[0145] However, in OFDM symbols used for sensing, whether using a coprime pattern, a nested pattern, or a uniform comb pattern, the sensing reference signal only occupies a portion of the subcarriers and REs, while the remaining subcarriers and REs are of no benefit to sensing. Therefore, from the perspective of spectral efficiency (SE), the subcarriers and REs in OFDM symbols used for sensing, excluding the sensing reference signal, will result in a decrease in SE.

[0146] In some embodiments, the terms "perceptual reference signal of a coprime pattern," "perceptual reference signal based on coprime integers," "perceptual reference signal pattern based on coprime integers," "perceptual reference signal coprime pattern," "coprime perceptual reference signal," "coprime perceptual reference signal pattern," and "perceptual reference signal" can be used interchangeably. In some embodiments, the terms "perceptual reference signal of a nested pattern," "perceptual reference signal nested pattern," "nested perceptual reference signal pattern," "nested perceptual reference signal," and "perceptual reference signal" can be used interchangeably.

[0147] In some embodiments, the terms "perception OFDM symbol," "perception OFDM symbol," and "OFDM symbol carrying a perception reference signal" are interchangeable. For example, a perception OFDM symbol includes a cyclic prefix and a perception reference signal. For example, a perception OFDM symbol also includes empty resource elements, depending on the pattern of the perception reference signal. In other words, excluding the cyclic prefix, the perception reference signal does not occupy all subcarriers of the perception OFDM symbol.

[0148] In some embodiments, the terms "OFDM symbol for communication," "communication OFDM symbol," and "OFDM symbol carrying a communication signal" may be used interchangeably. For example, a communication OFDM symbol includes a cyclic prefix and a communication signal, where the communication signal may carry information or data used for communication. The communication signal may be used for data transmission.

[0149] The embodiment of the present disclosure considers proposing a structural design of a first OFDM symbol. It should be noted that the first OFDM symbol can be used for both perception and communication.

[0150] In some embodiments, the terms "first OFDM symbol," "unified OFDM symbol," and "OFDM symbol carrying both a perception reference signal and a communication signal" are interchangeable. For example, the first OFDM symbol includes a perception reference signal and a communication signal. For example, the first OFDM symbol includes a cyclic prefix, a perception reference signal, and a communication signal.

[0151] FIG1A shows an exemplary schematic diagram of multiple OFDM symbols continuous in the time domain. As shown in FIG1A , multiple OFDM symbols continuous in the time domain sequentially include a communication OFDM symbol, a first OFDM symbol, and a communication OFDM symbol. The communication OFDM symbol can be used for communication, and the first OFDM symbol can be used for sensing and communication at the same time. For example, the communication OFDM symbol includes a cyclic prefix and a communication signal, where the cyclic prefix is ​​represented by N CP sampling points, the communication signal is represented by N FFT sampling points, the length of the communication OFDM symbol is N OFDM , N OFDM It can be expressed as the number of sampling points, that is, N OFDM =NCP +N FFT The first OFDM symbol includes a cyclic prefix, a perception reference signal, and a communication signal, wherein the cyclic prefix is ​​represented by M CP sampling points, the sensing reference signal and the communication signal are expressed as M DFT sampling points, the length of the first OFDM symbol is M CP +M DFT .

[0152] In some embodiments, in order to ensure alignment with the communication OFDM symbol, the length of each first OFDM symbol (including the cyclic prefix) may be equal to the length of the communication OFDM symbol (including the cyclic prefix), that is, M CP +M DFT =N OFDM =N CP +N FFT .

[0153] In some embodiments, for a first OFDM symbol set, the first OFDM symbol set consists of L first OFDM symbols that are consecutive in the time domain, where L is an integer greater than or equal to 1. Optionally, the number L of first OFDM symbols included in different first OFDM symbol sets may be the same or different.

[0154] In some embodiments, in order to ensure alignment with the communication OFDM symbol, for a first OFDM symbol set, the total length of the L first OFDM symbols in the set (including the cyclic prefix) is equal to the length of the communication OFDM symbol (including the cyclic prefix). That is, (M CP +M DFT )·L=N OFDM Among them, M CP +M DFT Indicates the length of a single first OFDM symbol, that is, M CP +M DFT =N OFDM / L=(N CP +N FFT ) / L.

[0155] According to the above embodiment, based on the above first OFDM symbol set, the transmitter can transmit one or more first OFDM symbols within a communication OFDM symbol. On the one hand, when sensing a relatively close target, there is no need to set an excessively long cyclic prefix. By reducing the length of the cyclic prefix, multiple first OFDM symbols can be continuously transmitted within a communication OFDM symbol. This is equivalent to transmitting multiple sensing reference signals within a communication OFDM symbol, thereby performing multiple sensing measurements of the sensing target, which is beneficial for improving sensing accuracy, especially for relatively close targets. On the other hand, multiple communication signals are also transmitted simultaneously, which is beneficial for wireless communication.

[0156] FIG1B shows an exemplary schematic diagram of multiple consecutive OFDM symbols in the time domain. As shown in FIG1B , the multiple consecutive OFDM symbols in the time domain sequentially include a communication OFDM symbol, L consecutive first OFDM symbols, and a communication OFDM symbol. It should be noted that FIG1B is a schematic diagram shown using L>1 (specifically, L=2) as an example. When L=1, the multiple consecutive OFDM symbols in the time domain can refer to the schematic diagram shown in FIG1A .

[0157] In some embodiments, the length of the cyclic prefix in the first OFDM symbol may be determined according to the perceived target range.

[0158] In some embodiments, the sampling rate f can be maintained s unchanged, and flexibly adjust the number of the first OFDM symbol L, subcarrier bandwidth and DFT length M DFT Scaling is performed to change the length of the cyclic prefix in the first OFDM symbol.

[0159] According to the first OFDM symbol proposed in the embodiment of the present disclosure, for wireless perception, the length of the cyclic prefix in the first OFDM symbol can be flexibly adjusted, so the distance perception range without ISI can be flexibly adjusted. For wireless communication, resources other than the perception reference signal in each first OFDM symbol can be used to transmit communication data, thereby improving the throughput of the communication link.

[0160] In some embodiments, the sampling rate of the first OFDM symbol may be the same as the sampling rate of the communication OFDM symbol. In some embodiments, the symbol length (including the cyclic prefix) of the first OFDM symbol may be the same as the symbol length (including the cyclic prefix) of the communication OFDM symbol. In some embodiments, the parameter set (numerology) of the first OFDM symbol may be different from the parameter set (numerology) of the communication OFDM symbol.

[0161] In the first OFDM symbol, the resources occupied by the perceptual reference signal can be expressed as a set K sensing , optionally, K sensing It is the set S of resources occupied by each sensing reference signal port (m) The set obtained by taking the union. m can represent the port number of any perception reference signal port, where Indicates the numbered set of sensing reference signal ports.

[0162] Among them, S (m) It can be understood as the set or pattern of resource particles occupied by the sensing reference signal port m, or S (m) It can be understood as the frequency domain pattern of the sensing reference signal port m, or S (m) It can be understood as the set of subcarrier positions occupied by the perception reference signal port m in the frequency domain. (m) Includes the number of the OFDM subcarrier occupied by the perception reference signal port in the frequency domain.

[0163] In some embodiments, S (m) It can be determined in a variety of implementations, for example, it can be determined in at least one of the following implementations, but is not limited thereto.

[0164] (1) Perceptual reference signals of mutually prime patterns

[0165] In some embodiments, S (m) Satisfy one of the following formulas: S (m) ={q·P·K min +N subc PRB ·K0+k0+m|q=0,1,…,Q-1}∪{p·Q·K min +N subc PRB ·K0+k0+m|p=0,1,…,2P-1};S (m) ={q·P·K min +N subc PRB ·K0+k0+m|q=0,1,…,Q-1}∪{p·Q·K min +N subc PRB K0+k0+m|p=1,…,2P-1};S (m) ={q·P·K min +N subc PRB ·K0+k0+m|q=1,…,Q-1}∪{p·Q·K min +N subc PRB·K0+k0+m|p=0,1,…,2P-1};

[0166] in:

[0167] P and Q are a pair of coprime integers, that is, the greatest common divisor of P and Q is 1, and P is smaller than Q.

[0168] K min Indicates the minimum frequency domain spacing between frequency domain adjacent subcarriers of the perception reference signal port m. K min It can be expressed as the number of subcarriers.

[0169] N subc PRB Indicates the number of subcarriers contained in a physical resource block (PRB) (for example, 12).

[0170] K0 represents the number of the starting PRB of the sensing reference signal port m relative to the common resource block (CRB) 0. In other words, K0 represents the frequency domain offset of the starting PRB of the sensing reference signal port m relative to CRB0, which is expressed as the PRB number.

[0171] k0 represents the number of the starting subcarrier of the perception reference signal port m in the PRB (starting PRB) where it is located. Optionally, k0∈[0,N subc PRB ).

[0172] m represents the port number of the sensing reference signal port. Optionally, m is less than K min A non-negative integer. For example, m∈[0,K min ).

[0173] (2) Perceptual reference signals of nested patterns

[0174] In some embodiments, S (m) Satisfy one of the following formulas:

[0175] N represents the number of subcarriers occupied by the perception reference signal port m in the frequency domain.

[0176] K min Indicates the minimum frequency domain spacing between frequency domain adjacent subcarriers of the perception reference signal port m. K min It can be expressed as the number of subcarriers.

[0177] N subc PRBIndicates the number of subcarriers contained in a PRB (e.g. 12).

[0178] K0 represents the number of the starting PRB of the sensing reference signal port m relative to CRB0. In other words, K0 represents the frequency domain offset of the starting PRB of the sensing reference signal port m relative to CRB0, which is expressed as the number of PRBs.

[0179] k0 represents the number of the starting subcarrier of the perception reference signal port m in the PRB (starting PRB) where it is located. Optionally, k0∈[0,N subc PRB ).

[0180] m represents the port number of the sensing reference signal port. Optionally, m is less than K min A non-negative integer. For example, m∈[0,K min ).

[0181] (3) Perceptual reference signal of uniform comb pattern

[0182] In some embodiments, S (m) Satisfies the following formula: S (m) ={n·K1+N subc PRB K0+k0+m|n=0,…,N-1};

[0183] N represents the number of subcarriers occupied by the perception reference signal port m in the frequency domain.

[0184] K1 represents the frequency domain interval between subcarriers where frequency domain adjacent perception reference signals of perception reference signal port m are located. Optionally, K1 can be represented as the number of subcarriers.

[0185] N subc PRB Indicates the number of subcarriers contained in a PRB (e.g. 12).

[0186] K0 represents the number of the starting PRB of the sensing reference signal port m relative to CRB0. In other words, K0 represents the frequency domain offset of the starting PRB of the sensing reference signal port m relative to CRB0, which is expressed as the number of PRBs.

[0187] k0 represents the number of the starting subcarrier of the perception reference signal port m in the PRB (starting PRB) where it is located. Optionally, k0∈[0,N subc PRB ).

[0188] m represents the port number of the sensing reference signal port. Optionally, m is less than K min A non-negative integer. For example, m∈[0,Kmin ).

[0189] In some embodiments, in the first OFDM symbol, except for the resource set K occupied by the sensing reference signal sensing Resources other than the resource elements can be used for wireless communication, which can be understood as, all or part of the resource elements except the resource elements occupied by the perception reference signal can be used for wireless communication, for example, all or part of these resource elements can be used for physical downlink shared channel (PDSCH), or physical downlink control channel (PDCCH), or physical uplink shared channel (PUSCH), or physical uplink control channel (PUCCH), or physical sidelink shared channel (PSSCH), or demodulation reference signal (DMRS), etc.

[0190] Based on the first OFDM symbol structure proposed in the embodiment of the present disclosure, the embodiment of the present disclosure proposes a communication system and a communication method.

[0191] Figure 2 is a schematic diagram of a communication system according to an embodiment of the present disclosure. As shown in Figure 2, communication system 200 may include a transmitter 101 and a receiver 102. In some embodiments, the transmitter comprises a communication transmitter. In some embodiments, the receiver comprises a communication receiver. In some embodiments, the receiver comprises a sensing receiver.

[0192] It should be noted that the number of transmitters and the number of receivers shown in FIG2 are merely examples and do not constitute a limitation on the embodiments of the present disclosure. In actual situations, there may be one or more transmitters and one or more receivers.

[0193] In some embodiments, the transmitter may be located in a terminal or a network device.

[0194] In some embodiments, the receiver may be located in a terminal or a network device.

[0195] In some embodiments, the transmitter and the receiver may be located in the same device, for example, the transmitter and the receiver are located in the same terminal or in the same network device.

[0196] In some embodiments, the transmitter and receiver may be located in different devices respectively, for example, the transmitter is located in a terminal and the receiver is located in another terminal; for example, the transmitter is located in a terminal and the receiver is located in a network device; for example, the transmitter is located in a network device and the receiver is located in another network device; for example, the transmitter is located in a network device and the receiver is located in a terminal.

[0197] In some embodiments, the terminal may include at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home, but is not limited thereto.

[0198] In some embodiments, the network device is, for example, an access network device, which may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0199] FIG3 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the communication method includes:

[0200] Step S3101: The transmitter sends first information to the receiver.

[0201] In some embodiments, the first information is used by a receiver to receive a communication signal in a first OFDM symbol.

[0202] In some embodiments, the receiver receives first information sent by the transmitter, so that the receiver receives a communication signal in a first OFDM symbol according to the first information.

[0203] In some embodiments, the first information may include, but is not limited to, at least one of the following parameters (a) to (c):

[0204] (a) A first parameter, used to indicate the subcarrier bandwidth of the first OFDM symbol.

[0205] In some embodiments, the first parameter indicates the subcarrier bandwidth of the first OFDM symbol, and may directly indicate the subcarrier bandwidth, for example, the first parameter includes the subcarrier bandwidth. In some embodiments, the first parameter indicates the subcarrier bandwidth of the first OFDM symbol, and may indirectly indicate the subcarrier bandwidth, for example, the first parameter includes other parameters, and the other parameters may determine the subcarrier bandwidth.

[0206] In some embodiments, the name of the first parameter is not limited, and it can be replaced by, for example, a "parameter set (numerology)".

[0207] In some embodiments, the first parameter may include, but is not limited to, at least one of the following parameters (a1) to (a7):

[0208] (a1) The number of first OFDM symbols: L.

[0209] For example, L is the number of consecutive first OFDM symbols in a time slot.

[0210] (a2) Cyclic prefix length of the first OFDM symbol: M CP .

[0211] (a3) Discrete Fourier transform (DFT) length of the first OFDM symbol: M DFT .

[0212] Alternatively, the DFT length may be alternatively described as the number of DFT points, the DFT size, etc.

[0213] Optionally, the DFT length / number of points / size may be replaced by IDFT length / number of points / size, etc.

[0214] (a4) Cyclic prefix length ratio of the first OFDM symbol.

[0215] In some embodiments, the cyclic prefix length ratio may represent the cyclic prefix length M in the first OFDM symbol. CP With DFT length M DFT The ratio between them.

[0216] It should be understood that in the embodiments of the present disclosure, the “ratio between A and B” can be understood as the ratio of A to B, that is, Or it can be understood as the ratio of B to A, that is,

[0217] Optionally, the cyclic prefix length ratio may include: or

[0218] In some embodiments, the cyclic prefix length ratio may represent the cyclic prefix length M in the first OFDM symbol. CP The ratio between the length of the first OFDM symbol and the length of the first OFDM symbol.

[0219] Optionally, the cyclic prefix length ratio may include: or or or

[0220] (a5) Subcarrier bandwidth of the first OFDM symbol: Among them, f s is the sampling rate.

[0221] (a6) Subcarrier bandwidth ratio, which represents the ratio between the subcarrier bandwidth of the first OFDM symbol and the subcarrier bandwidth of the second OFDM symbol.

[0222] In some embodiments, the second OFDM symbol includes a communication signal. In some embodiments, the second OFDM symbol may be the communication OFDM symbol described above. In some embodiments, the second OFDM symbol may also be a non-first OFDM symbol.

[0223] Optionally, the subcarrier bandwidth ratio may include: or Wherein, Δf(sensing&comm) is the subcarrier bandwidth of the first OFDM symbol, Δf (comm) is the subcarrier bandwidth of the second OFDM symbol.

[0224] (a7) The first exponent μ represents the logarithmic result of the subcarrier bandwidth ratio.

[0225] In some embodiments,

[0226] In some embodiments, the name of the first index is not limited, and it can be replaced by, for example, a parameter set index, or a parameter set index with reference to a parameter set used for communication.

[0227] In some embodiments, the transmitter may send at least one of the above parameters (a1) to (a7) to the receiver. The receiver may determine the subcarrier bandwidth used by the first OFDM symbol based on the parameters sent by the transmitter.

[0228] (b) A second parameter, used to indicate a rate matching pattern of the first OFDM symbol.

[0229] In some embodiments, the rate matching pattern comprises a pattern of resources in the first OFDM symbol that are unavailable for wireless communication, eg, the rate matching pattern comprises a pattern of OFDM subcarriers occupied by sensing reference signals in the first OFDM symbol.

[0230] In some embodiments, the second parameter includes at least one of the following parameters (b1) to (b4):

[0231] (b1) The set of OFDM subcarrier numbers occupied by the sensing reference signal:

[0232] In some embodiments, in the above number set, the number of the OFDM subcarrier occupied by the perception reference signal may include the number of the OFDM subcarrier occupied by the perception reference signal in the radio resources allocated to the receiver for communication.

[0233] In some embodiments, in the above number set, the number of the OFDM subcarrier occupied by the perception reference signal may be the number of the OFDM subcarrier relative to CRB0.

[0234] In some embodiments, in the aforementioned numbering set, the number of the OFDM subcarrier occupied by the perception reference signal may be the number of the OFDM subcarrier relative to the starting position of the radio resources allocated to the receiver for communication. For example, if PRB2 to PRB3 are allocated to the receiver for communication, the number of the OFDM subcarrier occupied by the perception reference signal may be the number of the OFDM subcarrier relative to PRB2.

[0235] (b2) Parameter used to determine the number of OFDM subcarriers occupied by the perception reference signal.

[0236] In some embodiments, the number of the OFDM subcarrier occupied by the perception reference signal may be the number of the OFDM subcarrier relative to CRB0.

[0237] In some embodiments, the parameter (b2) may include: P, Q, K min , K0, k0, At least one of .

[0238] In some embodiments, the parameter (b2) may include: N, K min , K0, k0, At least one of .

[0239] In some embodiments, the parameter (b2) may include: N, K1, K0, k0, At least one of .

[0240] In some embodiments, the number of the OFDM subcarriers occupied by the perception reference signal may be the number of the OFDM subcarrier relative to the starting position of the radio resources allocated to the receiver for communication. For example, if PRB2 to PRB3 are allocated to the receiver for communication, the number of the OFDM subcarriers occupied by the perception reference signal may be the number of the OFDM subcarrier relative to PRB2.

[0241] In some embodiments, the parameter (b2) may include: P, Q, K min , K0', k0, At least one of the following. Optionally, K0' represents the number of the starting PRB of the perceptual reference signal port relative to the starting position of the radio resources allocated to the receiver for communication, which can be expressed as a PRB number. Taking the nested perceptual reference signal pattern as an example, the receiver can determine the number of each OFDM subcarrier occupied by each perceptual reference signal port relative to the starting position of the radio resources allocated to the receiver for communication by replacing K0' in the formula based on parameter (b2).

[0242] In some embodiments, the parameter (b2) may include: N, K min , K0', k0, At least one of .

[0243] In some embodiments, the parameter (b2) may include: N, K1, K0', k0, At least one of .

[0244] According to parameter (b2), the receiver can determine the number of the OFDM subcarrier occupied by the perception reference signal in the first OFDM symbol. Optionally, for example, it can determine the number of the OFDM subcarrier occupied by the perception reference signal relative to CRB0, or the number relative to the starting position of the wireless resources allocated to the receiver for communication.

[0245] In some embodiments, the transmitter may send one of the parameter (b1) and the parameter (b2).

[0246] (b3) The numbered set of the first OFDM symbol in a time slot:

[0247] (b4) The number of the first first OFDM symbol among the L consecutive first OFDM symbols in the time slot.

[0248] In some embodiments, the transmitter may send at least one of the above parameters (b1) to (b4) to the receiver. Based on the parameters sent by the transmitter, the receiver may determine resources in the first OFDM symbol that are unavailable for wireless communication, for example, determining the OFDM subcarriers occupied by the sensing reference signal in the first OFDM symbol, thereby skipping resource elements that are unavailable for wireless communication when receiving communication signals, for example, skipping resource elements occupied by the sensing reference signal. Optionally, based on the parameters sent by the transmitter, the receiver may determine resources in each first OFDM symbol within a time slot that are unavailable for wireless communication.

[0249] (c) Power ratio ρ, which indicates the ratio of the average transmit power per RE (energy per RE, EPRE) in the second OFDM symbol to the average transmit power per RE in the first OFDM symbol.

[0250] In some embodiments, the power ratio p may refer to the ratio of the average transmit power of each RE in the second OFDM symbol to the average transmit power of each RE in the first OFDM symbol. In some embodiments, the power ratio p may refer to the ratio of the average transmit power of each RE in the first OFDM symbol to the average transmit power of each RE in the second OFDM symbol.

[0251] In some embodiments, the second OFDM symbol and the first OFDM symbol involved in the above parameters are resources allocated to the same receiver.

[0252] In some embodiments, the transmitter sends a parameter (c), ie, a transmission power ratio ρ, to the receiver. The receiver receives the communication signal in the first OFDM symbol according to the power ratio ρ.

[0253] According to the above embodiment, the first information may include at least one of the above parameters (a1) to (a7), parameters (b1) to (b4) and parameter (c). For example, the first information may include the first index μ, N, K min , K0 (or K0'), k0, and For example, the first information may include first exponents μ, P, Q, K min, K0 (or K0'), k0, and

[0254] In some embodiments, the transmitter may send at least one of the above parameters (a1) to (a7), parameters (b1) to (b4), and parameter (c) to the receiver. For example, the transmitter may send the first index μ, N, K to the receiver. min , K0 (or K0'), k0, and

[0255] In some embodiments, the first information may be carried in at least one of the following:

[0256] Downlink Control Information (DCI);

[0257] Media Access Control (MAC) Control Element (CE) messages;

[0258] Radio Resource Control (RRC) messages;

[0259] Sidelink control information (SCI).

[0260] In some embodiments, the transmitter may notify the receiver of at least one of the above parameters (a1) to (a7), parameters (b1) to (b4), and parameter (c) through at least one signaling.

[0261] In some embodiments, the signaling may include at least one of the following signaling:

[0262] Uu interface: DCI, MAC CE and RRC signaling;

[0263] PC5 interface: SCI and PC5RRC signaling.

[0264] In some embodiments, this step is optional. For example, if the transmitter and the receiver are located in the same device, the transmitter may not send the first information.

[0265] Step S3102: The transmitter sends a first OFDM symbol.

[0266] In some embodiments, the first OFDM symbol includes a perceptual reference signal and a communication signal.

[0267] In some embodiments, the first OFDM symbol includes a cyclic prefix, a perceptual reference signal, and a communication signal.

[0268] In some embodiments, the length of the first OFDM symbol (including the cyclic prefix) is equal to the length of the second OFDM symbol (including the cyclic prefix).

[0269] According to an optional implementation, in some embodiments, sending the first OFDM symbol may include sending L first OFDM symbols, where the L first OFDM symbols are consecutive in the time domain, and thus the transmitter may send the L first OFDM symbols consecutively in the time domain, where L is an integer greater than or equal to 1.

[0270] In some embodiments, the total length of the L first OFDM symbols (including the cyclic prefix) is equal to the length of the second OFDM symbol (including the cyclic prefix).

[0271] Step S3103: The receiver receives a communication signal in a first OFDM symbol according to the first information.

[0272] According to an optional implementation, in some embodiments, the receiver receives first information and may then receive a communication signal in a first OFDM symbol according to the first information.

[0273] According to an optional implementation, in some embodiments, receiving a communication signal in a first OFDM symbol may include: receiving a communication signal in L first OFDM symbols, the L first OFDM symbols being continuous in the time domain, so that the receiver can continuously receive the communication signal in each of the L first OFDM symbols in the time domain.

[0274] According to the above embodiment, the transmitter sends a first OFDM symbol, and the first OFDM symbol includes a perception reference signal and a communication signal, that is, the first OFDM symbol can be used for perception and communication at the same time, and the transmitter sends first information to the receiver, so that the receiver can receive the communication signal in the first OFDM symbol according to the first information. Resources other than the perception reference signal in the first OFDM symbol can be used to transmit communication data, thereby improving the throughput of the communication link and improving the spectrum efficiency of the synaesthesia integrated system. According to an optional implementation method, the perception system and the wireless communication system do not interfere with each other, and can ensure symbol-level alignment with the wireless communication system, and are completely transparent to the wireless communication system.

[0275] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 can be implemented as an independent embodiment, step S3101 + step S3102 can be implemented as an independent embodiment, step S3101 + step S3103 can be implemented as an independent embodiment, and step S3102 + step S3103 can be implemented as an independent embodiment.

[0276] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signaling", "configuration", "indication", and "parameter" can be used interchangeably.

[0277] In some embodiments, the terms "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" and the like may be used interchangeably.

[0278] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" may be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" may be used interchangeably.

[0279] According to the communication method of the embodiment of the present disclosure, some possible embodiments are illustrated.

[0280] In some embodiments, the communication transmitter notifies the target communication receiver of at least one of the following parameters:

[0281] Parameter set information of the first OFDM symbol;

[0282] A rate matching pattern (RMP); optionally, comprising an RMP corresponding to a subset (a set of REs) of which the union of all port patterns of the sensing reference signal falls within the time-frequency resources allocated to the target communication receiver, or an RMP corresponding to the union of all port patterns of the sensing reference signal;

[0283] The ratio between the average transmit power per RE (energy per RE, EPRE) in the communication OFDM symbol and the average transmit power per RE in the first OFDM symbol, ie, the power ratio ρ.

[0284] In some embodiments, the communication transmitter notifies the target communication receiver of the at least one parameter via signaling. The signaling may include at least one of the following:

[0285] Uu interface: DCI, MAC CE and RRC signaling;

[0286] PC5 interface: SCI and PC5RRC signaling.

[0287] In one possible embodiment, a gNB performs both distance sensing (dual-station mode) and communication simultaneously. Using a semipersistent method, the gNB transmits nested sensing reference signals (NSRSs) using the first two OFDM symbols in slots 6, 8, and 10. The pattern of the NRSs is shown in Figure 4A.

[0288] The nested sensing reference signal includes two ports The two are multiplexed by frequency division multiplexing (FDM), and the parameters of each port include: N = 6, K min =2, K0=2, k0=0, μ=1, T slot =2,s0=6,s num =3. Among them, T slot Indicates the time domain period, which is expressed as the number of time slots, s0 represents the number of the starting time slot, s num = 1, it can be seen from the figure that the subcarrier width of the first OFDM symbol is twice that of the communication OFDM symbol.

[0289] In time slot 6, the gNB allocates PRBs 2 to 3 to UE#1 (Single-User Multiple-Input Multiple-Output, SU-MIMO) for communication, and PRBs 4 to 5 to both UE#2 and UE#3 (Multi-User Multiple-Input Multiple-Output, MU-MIMO) for communication. In time slot 8, the gNB allocates PRBs 2 to 5 to UE#4 for communication.

[0290] In the DCI for scheduling PRB2 to PRB3 in slot 6, the gNB notifies UE#1 of the following parameters: μ1 = 1, And the power ratio ρ1. Among them, is the set of numbers of OFDM subcarriers occupied by the nested perception reference signal in the first OFDM symbol. The number of the OFDM subcarriers included in is relative to the starting position of the radio resources allocated to UE#1 for communication (ie, PRB2). It should be understood that The OFDM subcarrier numbers included in may also be relative to CRB0. Accordingly, UE#1 determines the rate matching pattern (e.g., the RE positions including signals such as the nested CRS) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#1) for communication based on the parameters notified by the gNB. UE#1 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol according to the power ratio ρ1.

[0291] In the DCI for scheduling PRB4 to PRB5 in slot 6, the gNB notifies UE#2 of the following parameters: μ2 = 1, and power ratio ρ2. Accordingly, UE#2 determines the rate matching pattern (e.g., the RE positions including signals such as the nested sensing reference signal) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#2) for communication based on the parameters notified by the gNB. UE#2 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ2.

[0292] In the DCI for scheduling PRB4 to PRB5 in slot 6, the gNB notifies UE#3 of the following parameters: μ3 = 1, and power ratio ρ3. Accordingly, UE#3 determines the rate matching pattern (e.g., the RE positions including the nested sensing reference signal and other signals) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#3) for communication based on the parameters notified by the gNB. UE#3 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ3.

[0293] In the DCI for scheduling PRB2 to PRB5 in slot 8, the gNB notifies UE#4 of the following parameters: μ4 = 1, Alternatively, in the DCI for scheduling PRB2 to PRB5 in slot 8, the gNB notifies UE#4 of the following parameters: μ4 = 1, N = 6, K min =2, K0=2 (or K0'=0), k0=0, and power ratio ρ4. Accordingly, UE#4 determines the rate matching pattern (e.g., the RE positions including signals such as the nested sensing reference signal) in each first OFDM symbol of time slot 8 and the RE positions allocated to itself (UE#4) for communication based on the parameters notified by the gNB. UE#4 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ4.

[0294] In one possible embodiment, a gNB performs both distance sensing (dual-station mode) and communication simultaneously. Using a semipersistent method, the gNB transmits a mutual quality sensing reference signal (MSRS) using the first two OFDM symbols in time slots 6, 8, and 10. The MSRS pattern is shown in Figure 4B.

[0295] The mutual quality sensing reference signal includes two ports The two are multiplexed by frequency division multiplexing (FDM), and the parameters of each port include: P = 2, Q = 3, K min =2, K0=2, k0=0, μ=1, T slot =2,s0=6,s num =3. Among them, T slot Indicates the time domain period, which is expressed as the number of time slots, s0 represents the number of the starting time slot, s num = 1, it can be seen from the figure that the subcarrier width of the first OFDM symbol is twice that of the communication OFDM symbol.

[0296] In slot 6, the gNB allocates PRBs 2 to 3 to UE #1 (SU-MIMO) for communication, and PRBs 4 to 5 to UE #2 and UE #3 (MU-MIMO) for communication. In slot 8, the gNB allocates PRBs 2 to 5 to UE #4 for communication.

[0297] In the DCI for scheduling PRB2 to PRB3 in slot 6, the gNB notifies UE#1 of the following parameters: μ1 = 1, and power ratio ρ1. Accordingly, UE#1 determines the rate matching pattern (e.g., the RE positions including signals such as the Mutual Quality Sensing Reference Signal) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#1) for communication based on the parameters notified by the gNB. UE#1 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ1.

[0298] In the DCI for scheduling PRB4 to PRB5 in slot 6, the gNB notifies UE#2 of the following parameters: μ2 = 1, and power ratio ρ2. Accordingly, UE#2 determines the rate matching pattern (e.g., the RE positions including signals such as the Mutual Quality Sensing Reference Signal) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#2) for communication based on the parameters notified by the gNB. UE#2 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ2.

[0299] In the DCI for scheduling PRB4 to PRB5 in slot 6, the gNB notifies UE#3 of the following parameters: μ3 = 1, and power ratio ρ3. Accordingly, UE#3 determines the rate matching pattern (e.g., the RE positions including signals such as the Mutual Quality Sensing Reference Signal) in each first OFDM symbol of time slot 6 and the RE positions allocated to itself (UE#3) for communication based on the parameters notified by the gNB. UE#3 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ3.

[0300] In the DCI for scheduling PRB2 to PRB5 in slot 8, the gNB notifies UE#4 of the following parameters: μ4 = 1, Alternatively, in the DCI for scheduling PRB2 to PRB5 in slot 8, the gNB notifies UE#4 of the following parameters: μ4 = 1, P = 2, Q = 3, K min =2, K0=2 (or K0'=0), k0=0, and power ratio ρ4. Accordingly, UE#4 determines the rate matching pattern (e.g., the RE positions including signals such as the Mutual Quality Sensing Reference Signal) in each first OFDM symbol of time slot 8 and the RE positions allocated to itself (UE#4) for communication based on the parameters notified by the gNB. UE#4 skips the RE positions indicated by the rate matching pattern when receiving communication data and receives the communication data (e.g., PDSCH data) in the first OFDM symbol based on the power ratio ρ4.

[0301] FIG5 is a schematic diagram of an exemplary flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure is performed by a transmitter, and the communication method includes:

[0302] Step S5101, sending the first information.

[0303] In some embodiments, first information is sent to a receiver, and the first information is used by the receiver to receive a communication signal in a first OFDM symbol.

[0304] In some embodiments, the first information is carried in at least one of the following:

[0305] DCI;

[0306] MAC CE message;

[0307] RRC message;

[0308] SCI.

[0309] The optional implementation of step S5101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0310] In some embodiments, this step is optional. For example, if the transmitter and the receiver are located in the same device, the transmitter may not send the first information.

[0311] Step S5102: Send the first OFDM symbol.

[0312] In some embodiments, the first OFDM symbol includes a perceptual reference signal and a communication signal.

[0313] In some embodiments, the first OFDM symbol includes a cyclic prefix, a perceptual reference signal, and a communication signal.

[0314] In some embodiments, the length of the first OFDM symbol (including the cyclic prefix) is equal to the length of the second OFDM symbol (including the cyclic prefix).

[0315] According to an optional implementation, in some embodiments, sending the first OFDM symbol may include: sending L first OFDM symbols, where the L first OFDM symbols are continuous in the time domain, so the transmitter may send the L first OFDM symbols continuously in the time domain.

[0316] In some embodiments, the total length of the L first OFDM symbols (including the cyclic prefix) is equal to the length of the second OFDM symbol (including the cyclic prefix).

[0317] According to the above embodiment, the first OFDM symbol includes a perception reference signal and a communication signal. That is, the first OFDM symbol can be used for both perception and communication. Resources other than the perception reference signal in the first OFDM symbol can be used to transmit communication data, which can improve the throughput of the communication link and the spectrum efficiency of the integrated synaesthesia system. Optionally, the transmitter can send first information to the receiver, so that the receiver can receive the communication signal in the first OFDM symbol based on the first information.

[0318] FIG6A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6A , the embodiment of the present disclosure is executed by a receiver, and the communication method includes:

[0319] Step S6101, receiving first information.

[0320] In some embodiments, the first information is used by a receiver to receive a communication signal in a first OFDM symbol.

[0321] In some embodiments, the first information may be carried in at least one of the following:

[0322] DCI;

[0323] MAC CE message;

[0324] RRC message;

[0325] SCI.

[0326] The optional implementation of step S6101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0327] In some embodiments, this step is optional. For example, if the transmitter and the receiver are located in the same device, the transmitter may not send the first information, and the receiver may not receive the first information.

[0328] Step S6102: Receive a communication signal in a first OFDM symbol.

[0329] According to an optional implementation, in some embodiments, the receiver receives first information and may then receive a communication signal in a first OFDM symbol according to the first information.

[0330] According to an optional implementation, in some embodiments, receiving a communication signal in a first OFDM symbol may include: receiving a communication signal in L first OFDM symbols, the L first OFDM symbols being continuous in the time domain, so that the receiver can continuously receive the communication signal in each of the L first OFDM symbols in the time domain.

[0331] According to the above embodiment, the first OFDM symbol includes a perception reference signal and a communication signal. That is, the first OFDM symbol can be used for both perception and communication. Resources other than the perception reference signal in the first OFDM symbol can be used to transmit communication data, which can improve the throughput of the communication link and the spectrum efficiency of the synaesthesia integrated system. Optionally, the receiver can receive the first information sent by the transmitter and, based on the first information, receive the communication signal in the first OFDM symbol.

[0332] FIG6B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6B , the embodiment of the present disclosure is executed by a receiver, and the communication method includes:

[0333] Step S6201, receiving the first OFDM symbol.

[0334] According to an optional implementation, in some embodiments, receiving the first OFDM symbol may include: receiving L first OFDM symbols, where the L first OFDM symbols are continuous in the time domain, so the receiver may receive the L first OFDM symbols continuously in the time domain.

[0335] According to an optional implementation, in some embodiments, the receiver includes a perceptual receiver that can receive a perceptual reference signal in the first OFDM symbol. According to an optional implementation, in some embodiments, the receiver includes a communication receiver that can receive a communication signal in the first OFDM symbol.

[0336] According to the above embodiment, the first OFDM symbol can be used for sensing and communication at the same time.

[0337] The present disclosure also provides an apparatus for implementing any of the above methods. For example, a device is provided that includes units or modules for implementing each step performed by a transmitter in any of the above methods. For another example, another device is provided that includes units or modules for implementing each step performed by a receiver in any of the above methods.

[0338] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0339] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0340] FIG7A is a schematic diagram of the structure of the transmitter proposed in an embodiment of the present disclosure. As shown in FIG7A , the transmitter 7100 may include: at least one of a transceiver module 7101 and a processing module 7102. In some embodiments, the transceiver module is used to send a first OFDM symbol. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the transmitter in any of the above methods (e.g., step S3101 and step S3102, but not limited thereto), which are not described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the transmitter in any of the above methods, which are not described in detail here.

[0341] FIG7B is a schematic diagram of the structure of the receiver proposed in an embodiment of the present disclosure. As shown in FIG7B , the receiver 7200 may include: at least one of a transceiver module 7201 and a processing module 7202. In some embodiments, the transceiver module is used to receive a first OFDM symbol. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the receiver in any of the above methods (such as step S3103, but not limited thereto), which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the receiver in any of the above methods, which will not be described in detail here.

[0342] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0343] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0344] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device), a terminal (e.g., a user equipment), a chip, a chip system, or a processor that supports a network device in implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal in implementing any of the above methods. Communication device 8100 can be used to implement the method applied to a transmitter or the method applied to a receiver in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0345] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 8100 is used to perform any of the above methods.

[0346] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0347] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3101, step S3102, and step S3103, but not limited thereto), and the processor 8101 performs at least one of the other steps.

[0348] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0349] In some embodiments, the communication device 8100 may include one or more interface circuits. Optionally, the interface circuits are connected to the memory 8102 and may be used to receive signals from the memory 8102 or other devices, or to send signals to the memory 8102 or other devices. For example, the interface circuits may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0350] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0351] FIG8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0352] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0353] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0354] In some embodiments, the interface circuit 8202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3101, step S3102, step S3103, but not limited thereto), and the processor 8201 executes at least one of the other steps.

[0355] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0356] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0357] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0358] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0359] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: Executed by a transmitter, the method comprises: A first orthogonal frequency division multiplexing (OFDM) symbol is sent, wherein the first OFDM symbol includes a perceptual reference signal and a communication signal for data transmission.

2. The method according to claim 1, characterized in that The sending of the first OFDM symbol comprises: L first OFDM symbols are sent, where the L first OFDM symbols are continuous in the time domain, and L is an integer greater than or equal to 1.

3. The method according to claim 2, characterized in that The total length of the L first OFDM symbols is equal to the length of the second OFDM symbol.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: First information is sent to a receiver, where the first information is used by the receiver to receive the communication signal in the first OFDM symbol.

5. The method according to claim 4, characterized in that The first information includes at least one of the following: A first parameter, used to indicate a subcarrier bandwidth of the first OFDM symbol; A second parameter, used to indicate a rate matching pattern of the first OFDM symbol; The power ratio is used to indicate the ratio between the average transmit power of each resource element RE in the second OFDM symbol and the average transmit power of each RE in the first OFDM symbol.

6. The method according to claim 5, characterized in that The first parameter includes at least one of the following: The number L of the first OFDM symbols; The cyclic prefix length M of the first OFDM symbol CP ; The discrete Fourier transform length of the first OFDM symbol is M DFT ; The M CP With the M DFT The ratio between The M CP and the length of the first OFDM symbol; a subcarrier bandwidth of the first OFDM symbol; A subcarrier bandwidth ratio, wherein the subcarrier bandwidth ratio is a ratio between a subcarrier bandwidth of the first OFDM symbol and a subcarrier bandwidth of the second OFDM symbol; The logarithm of the subcarrier bandwidth ratio.

7. The method according to claim 5 or 6, characterized in that: The second parameter includes at least one of the following: A set of numbers of OFDM subcarriers occupied by the perception reference signal; A parameter used to determine the number of OFDM subcarriers occupied by the perception reference signal; A set of numbers of the first OFDM symbols in a time slot; The number of the first OFDM symbol among L consecutive first OFDM symbols in a time slot.

8. The method according to any one of claims 4 to 7, characterized in that: The first information is carried in at least one of the following: Downlink control information DCI; Media Access Control Element MAC CE message; Radio Resource Control RRC message; Side link control information SCI.

9. A communication method, characterized in that: Executed by a receiver, the method includes: A first OFDM symbol is received, the first OFDM symbol including a perceptual reference signal and a communication signal for data transmission.

10. The method according to claim 9, characterized in that The receiving a first OFDM symbol comprises: L first OFDM symbols are received, where the L first OFDM symbols are continuous in the time domain, and L is an integer greater than or equal to 1.

11. The method according to claim 10, characterized in that The total length of the L first OFDM symbols is equal to the length of the second OFDM symbol.

12. The method according to any one of claims 9 to 11, characterized in that: The method further comprises: receiving first information sent by a transmitter; The receiving a first OFDM symbol comprises: The communication signal in the first OFDM symbol is received according to the first information.

13. The method according to claim 12, characterized in that The first information includes at least one of the following: A first parameter, used to indicate a subcarrier bandwidth of the first OFDM symbol; A second parameter, used to indicate a rate matching pattern of the first OFDM symbol; The power ratio is used to indicate the ratio between the average transmit power of each resource element RE in the second OFDM symbol and the average transmit power of each RE in the first OFDM symbol.

14. The method according to claim 13, characterized in that The first parameter includes at least one of the following: The number L of the first OFDM symbols; The cyclic prefix length M of the first OFDM symbol CP ; The discrete Fourier transform length M of the first OFDM symbol DFT ; The M CP With the M DFT The ratio between The M CP and the length of the first OFDM symbol; a subcarrier bandwidth of the first OFDM symbol; A subcarrier bandwidth ratio, wherein the subcarrier bandwidth ratio is a ratio between a subcarrier bandwidth of the first OFDM symbol and a subcarrier bandwidth of the second OFDM symbol; The logarithm of the subcarrier bandwidth ratio.

15. The method according to claim 13 or 14, characterized in that The second parameter includes at least one of the following: A set of numbers of OFDM subcarriers occupied by the perception reference signal; A parameter used to determine the number of OFDM subcarriers occupied by the perception reference signal; A set of numbers of the first OFDM symbols in a time slot; The number of the first OFDM symbol among L consecutive first OFDM symbols in a time slot.

16. The method according to any one of claims 12 to 15, characterized in that: The first information is carried in at least one of the following: DCI; MAC CE message; RRC message; SCI.

17. A transmitter, characterized in that: include: The transceiver module is configured to send a first OFDM symbol, where the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

18. A receiver, characterized in that: include: The transceiver module is configured to receive a first OFDM symbol, where the first OFDM symbol includes a perception reference signal and a communication signal for data transmission.

19. A communication device, characterized in that: include: one or more processors; Wherein, the communication device is used to execute the communication method according to any one of claims 1-8.

20. A communication device, characterized in that: include: one or more processors; Wherein, the communication device is used to execute the communication method described in any one of claims 9-16.

21. A communication system, characterized in that: include: A transmitter, configured to execute the communication method according to any one of claims 1 to 8; A receiver, configured to execute the communication method according to any one of claims 9 to 16.

22. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-8 or 9-16.

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