Indication method and apparatus, and communication device, communication system and storage medium

Abstract

Provided in the present disclosure are an indication method and apparatus, and a device and a storage medium. The method comprises: a network device determining a target preprocessing type to be executed by a sending end before same sends a signal, wherein different preprocessing types are used for performing different preprocessing on a modulation symbol; the network device determining a target preprocessing parameter corresponding to the target preprocessing type; the network device determining at least one of a target signal mapping mode and a target signal pattern, which correspond to the signal under the target preprocessing type; and the network device sending first information to a terminal, wherein the first information is used for indicating at least one of the following: the target preprocessing type, the target preprocessing parameter, the target signal mapping mode and the target signal pattern. The method in the present disclosure can realize successful transmission of a signal, thereby ensuring the communication quality and the communication efficiency.

Description

Indication method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an indication method and apparatus, a communication device, a communication system, and a storage medium. Background Art

[0002] With the large-scale development of high-speed railways and the increasing popularity of vehicle communications on highways, wireless communication systems in high-speed mobile environments have attracted widespread attention. In these environments, due to the high terminal speeds, wireless communications often suffer from problems such as rapid time-varying fading, Doppler shift, and Doppler spread. To overcome these issues, the Orthogonal Time Frequency and Space (OTFS) communication system was introduced. OTFS is a two-dimensional modulation scheme that performs modulation in the delay-Doppler (DD) domain. Through a series of two-dimensional transformations, it converts a dual-dispersion channel into a nearly non-fading channel in the DD domain, achieving more significant performance gains. Therefore, the OTFS system has broad application prospects in the communications field.

[0003] Summary of the Invention

[0004] The present disclosure provides an indication method and apparatus, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for indicating is proposed, including:

[0006] The network device determines a target preprocessing type to be performed by the transmitter before transmitting the signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0007] The network device determines a target preprocessing parameter corresponding to the target preprocessing type;

[0008] The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0009] The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, the target signal mapping mode, and the target signal pattern.

[0010] According to a second aspect of an embodiment of the present disclosure, a method for indicating is proposed, including:

[0011] The terminal receives first information sent by the network device, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern;

[0012] Among them, the target preprocessing type is the preprocessing type to be performed by the transmitting end on the modulation symbol before sending the signal, the target preprocessing parameter is the parameter corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

[0013] According to a third aspect of an embodiment of the present disclosure, an indication method is proposed, which is applied to a communication system, wherein the communication system includes a terminal and a network device. The method includes:

[0014] The network device determines a target preprocessing type to be performed by the transmitter before transmitting the signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0015] The network device determines a target preprocessing parameter corresponding to the target preprocessing type;

[0016] The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0017] The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, the target signal mapping mode, and the target signal pattern;

[0018] The terminal receives first information sent by the network device.

[0019] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0020] a processing module, configured to determine a target preprocessing type to be performed by the transmitter before transmitting a signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0021] The processing module is further configured to determine target preprocessing parameters corresponding to the target preprocessing type;

[0022] The processing module is further configured to determine at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0023] The sending module is used to send first information to the terminal, where the first information is used to indicate at least one of the following: target preprocessing type, target preprocessing parameters, the target signal mapping mode, and the target signal pattern.

[0024] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0025] a receiving module, configured to receive first information sent by a network device, wherein the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern;

[0026] Among them, the target preprocessing type is the preprocessing type to be performed by the transmitting end on the modulation symbol before sending the signal, the target preprocessing parameter is the parameter corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

[0027] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0028] one or more processors;

[0029] The processor is used to call instructions to enable the communication device to execute the indication method described in any one of the first aspect and the second aspect.

[0030] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal and a network device, wherein the network device is configured to implement the indication method described in the first aspect, and the terminal is configured to implement the indication method described in the second aspect.

[0031] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the indication method described in any one of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0033] FIG1A is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0034] FIG1B is a signal transmission block diagram in an OTFS system according to an embodiment of the present disclosure;

[0035] 2A-2B are interactive diagrams of an indication method provided by an embodiment of the present disclosure;

[0036] 3A-3C are flowcharts of an indication method provided in yet another embodiment of the present disclosure;

[0037] 4A-4C are flowcharts of an indication method provided in yet another embodiment of the present disclosure;

[0038] FIG5 is a schematic flow chart of an indication method provided in yet another embodiment of the present disclosure;

[0039] FIG6A is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0040] FIG6B is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0041] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0042] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The embodiments of the present disclosure provide an indication method and apparatus, a communication device, a communication system, and a storage medium.

[0044] In a first aspect, an embodiment of the present disclosure provides an indication method, the method comprising:

[0045] The network device determines a target preprocessing type to be performed by the transmitter before transmitting the signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0046] The network device determines a target preprocessing parameter corresponding to the target preprocessing type;

[0047] The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0048] The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, the target signal mapping mode, and the target signal pattern.

[0049] In the above embodiment, the network device determines the target preprocessing type to be performed by the transmitting end before transmitting the signal, and also determines the target preprocessing parameters corresponding to the target preprocessing type, as well as the target signal mapping mode, target signal pattern, etc. corresponding to the target preprocessing type. The network device then indicates at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern to the terminal via first information. Optionally, the transmitting end can be either the network device or the terminal. It can be seen that the network device and the terminal jointly agree on the target preprocessing type for the modulation symbols and at least one of the target preprocessing parameters, target signal mapping mode, and target signal pattern corresponding to the target preprocessing type. When either the network device or the terminal acts as the transmitting end, the transmitting end can transmit the signal based on at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern. Furthermore, the receiving end can receive the signal based on at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern, thereby achieving successful signal transmission and ensuring communication quality and efficiency.

[0050] In combination with some embodiments of the first aspect, in some embodiments, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the uplink channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH;

[0052] The downlink channel includes at least one of the following: a physical downlink shared channel PDSCH and a physical downlink control channel PDCCH.

[0053] In the above-described embodiments, the method disclosed herein is applicable to instructing the transmitter of an uplink channel and / or downlink channel on the target preprocessing type and related parameters (such as at least one of the target preprocessing parameters, the target signal mapping method, and the target signal pattern) to be performed before the transmitter transmits a signal. This ensures that the transmitter of the uplink channel and / or downlink channel can successfully transmit signals, thereby ensuring communication quality and efficiency. Furthermore, the method disclosed herein is applicable to both uplink and downlink channels, thus having a wide range of applicability.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0056] The first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

[0057] In combination with some embodiments of the first aspect, in some embodiments, the first preprocessing type includes: discrete Fourier transform DFT preprocessing; the second preprocessing type includes: inverse symplectic finite Fourier transform ISFFT preprocessing.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula:

[0059] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of orthogonal frequency division multiplexing (OFDM) subcarriers of the channel;

[0060] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0061] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the orthogonal time-frequency-space (OTFS) system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0062] In the above embodiment, it is defined that the target preprocessing can be the first preprocessing type or the second preprocessing type, and the first preprocessing type and the second preprocessing type are also defined. It can be seen that the present disclosure clarifies the preprocessing methods specifically corresponding to different preprocessing types. When the transmitting end determines the target preprocessing type, it can perform preprocessing based on the preprocessing method corresponding to the target preprocessing type, thereby enabling the transmitting end to successfully preprocess the modulation symbols so that the transmitting end can further send the preprocessed signal, thereby ensuring the successful transmission of the signal and ensuring the communication quality and communication efficiency.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, determining the target preprocessing type to be performed by the transmitting end before sending the signal includes:

[0064] The terminal is located at a cell edge, and determines that the target preprocessing type is the first preprocessing type;

[0065] The moving speed of the terminal is greater than a first threshold, determining that the target preprocessing type is the second preprocessing type;

[0066] The Doppler frequency deviation of the channel is greater than a second threshold, and the target preprocessing type is determined to be the second preprocessing type.

[0067] In the above embodiment, a method is provided for a network device to determine which target preprocessing type the transmitter is to perform, so that the network device can determine the target preprocessing type to be performed by the transmitter and indicate it to the terminal, thereby achieving successful transmission of signals between the network device and the terminal, ensuring communication quality and communication efficiency. In addition, optionally, in some embodiments, when the terminal is located at the edge of a cell, the peak to average power ratio (PAPR) of the terminal waveform will be low. At this time, by making the target preprocessing type performed by the transmitter on the modulation symbol a first preprocessing type, high-power transmission of the signal can be achieved, thereby compensating for the low PAPR of the terminal waveform, ensuring successful transmission and / or reception of the signal, and further improving communication quality and communication efficiency. Optionally, in some embodiments, the first preprocessing type can also be a preprocessing performed by the terminal (e.g., a power-limited terminal) before sending a PUSCH, which can also achieve high-power transmission and ensure successful transmission and / or reception of the signal. Optionally, in some embodiments, when the terminal's moving speed is greater than a first threshold, and / or the channel's Doppler frequency deviation is greater than a second threshold, the target preprocessing type performed by the transmitter on the modulation symbol is set to the second preprocessing type to overcome the problem of "rapid time-varying fading, Doppler frequency deviation, and Doppler expansion in wireless communication due to the high terminal moving speed", thereby significantly improving the communication performance gain.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

[0069] In conjunction with some embodiments of the first aspect, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0070] The target preprocessing type is the second preprocessing type, and the target preprocessing parameter includes: at least one of the number of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0072] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the delay Doppler DD domain; the target signal pattern is: a DD domain signal pattern.

[0073] In the above embodiment, for the first preprocessing type and the second preprocessing type, the corresponding target preprocessing parameters, target signal mapping methods, and target signal patterns are respectively defined, so that when the target preprocessing type determined by the network device is the first preprocessing type or the second preprocessing type, it can be known which target preprocessing parameters, target signal mapping methods, and target signal patterns are specifically to be indicated, so that the network device can successfully indicate the corresponding target preprocessing parameters, target signal mapping methods, and target signal patterns for different target preprocessing types, thereby ensuring that the sending end and the receiving end can successfully realize signal transmission based on the target preprocessing type, target preprocessing parameters, target signal mapping methods, and target signal patterns, thereby ensuring communication quality and communication efficiency.

[0074] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first information to the terminal includes at least one of the following:

[0075] Sending the first information through radio resource control RRC signaling;

[0076] Sending the first information through a media access control layer control element MAC CE signaling;

[0077] Sending the first information through downlink control information DCI signaling;

[0078] Using a new indication field to carry the first information to send the first information;

[0079] An existing indication field is reused to carry the first information to send the first information.

[0080] In the above embodiment, a method of “how a network device sends first information to a terminal to indicate a target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern” is provided to ensure that the network device can successfully send the first information to the terminal to successfully indicate the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern to the terminal, so that the terminal and the network device can successfully achieve signal transmission based on the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern, thereby ensuring communication quality and communication efficiency. Also, optionally, when the network device sends the first information to the terminal, the network device can reuse existing signaling or an existing indication domain to send the first information to the terminal without introducing new signaling or a new indication domain, thereby saving communication overhead and reducing signaling success. Alternatively, the network device can also use a new indication domain to carry the first information, while avoiding occupying existing signaling or an existing indication domain, thereby avoiding affecting the normal use of existing signaling or an existing indication domain.

[0081] In a second aspect, an embodiment of the present disclosure provides an indication method, including:

[0082] The terminal receives first information sent by the network device, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode of a signal, and a target signal pattern;

[0083] Among them, the target preprocessing type is the preprocessing type to be performed by the transmitting end on the modulation symbol before sending the signal, the target preprocessing parameter is the parameter corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

[0084] In the above embodiment, the network device determines the target preprocessing type to be performed by the transmitting end before transmitting the signal, and also determines the target preprocessing parameters corresponding to the target preprocessing type, as well as the target signal mapping mode, target signal pattern, etc. corresponding to the target preprocessing type. The network device then indicates at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern to the terminal via first information. Optionally, the transmitting end can be either the network device or the terminal. It can be seen that the network device and the terminal jointly agree on the target preprocessing type for the modulation symbols and at least one of the target preprocessing parameters, target signal mapping mode, and target signal pattern corresponding to the target preprocessing type. When either the network device or the terminal acts as the transmitting end, the transmitting end can transmit the signal based on at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern. Furthermore, the receiving end can receive the signal based on at least one of the target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern, thereby achieving successful signal transmission and ensuring communication quality and efficiency.

[0085] In combination with some embodiments of the second aspect, in some embodiments, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0086] In conjunction with some embodiments of the second aspect, in some embodiments, the uplink channel includes at least one of the following: PUSCH, PUCCH;

[0087] The downlink channel includes at least one of the following: PDSCH and PDCCH.

[0088] In combination with some embodiments of the second aspect, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0089] In conjunction with some embodiments of the second aspect, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0090] The first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

[0091] In conjunction with some embodiments of the second aspect, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula:

[0092] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of OFDM subcarriers of the channel;

[0093] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0094] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0095] In combination with some embodiments of the second aspect, in some embodiments, the target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

[0096] In conjunction with some embodiments of the second aspect, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0097] The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0099] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the DD domain; the target signal pattern is: a DD domain signal pattern.

[0100] The receiving of the first information sent by the network device includes at least one of the following:

[0101] Receiving the first information sent by the network device through RRC signaling;

[0102] Receiving the first information sent by the network device through MAC CE signaling;

[0103] Receiving the first information sent by the network device through DCI signaling;

[0104] receiving the first information carried by the network device using a new indication field;

[0105] The receiving network device reuses the first information carried by the existing indication field.

[0106] In a third aspect, an embodiment of the present disclosure provides an indication method for a communication system, wherein the communication system includes a network device and a terminal, and the method includes at least one of the following:

[0107] The network device determines a target preprocessing type to be performed by the transmitter before transmitting the signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0108] The network device determines a target preprocessing parameter corresponding to the target preprocessing type;

[0109] The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0110] The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, the target signal mapping mode, and the target signal pattern;

[0111] The terminal receives first information sent by the network device.

[0112] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0113] a processing module, configured to determine a target preprocessing type to be performed by the transmitter before transmitting a signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0114] The processing module is further configured to determine target preprocessing parameters corresponding to the target preprocessing type;

[0115] The processing module is further configured to determine at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0116] The sending module is used to send first information to the terminal, where the first information is used to indicate at least one of the following: target preprocessing type, target preprocessing parameters, the target signal mapping mode, and the target signal pattern.

[0117] In combination with some embodiments of the fourth aspect, in some embodiments, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0118] In conjunction with some embodiments of the fourth aspect, in some embodiments, the uplink channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH;

[0119] The downlink channel includes at least one of the following: a physical downlink shared channel PDSCH and a physical downlink control channel PDCCH.

[0120] In combination with some embodiments of the fourth aspect, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0121] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0122] The first preprocessing type is used to perform discrete Fourier transform (DFT) preprocessing on the modulation symbols, and the second preprocessing type is used to perform inverse finite Fourier transform (ISFFT) preprocessing on the modulation symbols.

[0123] In conjunction with some embodiments of the fourth aspect, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula;

[0124] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of orthogonal frequency division multiplexing (OFDM) subcarriers of the channel;

[0125] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0126] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the orthogonal time-frequency-space (OTFS) system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0127] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0128] The terminal is located at a cell edge, and determines that the target preprocessing type is the first preprocessing type;

[0129] The moving speed of the terminal is greater than a first threshold, determining that the target preprocessing type is the second preprocessing type;

[0130] The Doppler frequency deviation of the channel is greater than a second threshold, and the target preprocessing type is determined to be the second preprocessing type.

[0131] In combination with some embodiments of the fourth aspect, in some embodiments, the target preprocessing parameters are: parameters required for preprocessing using the target preprocessing type.

[0132] In conjunction with some embodiments of the fourth aspect, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0133] The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0134] In conjunction with some embodiments of the fourth aspect, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0135] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the Delay Doppler (DD) domain; and the target signal pattern is: a DD domain signal pattern.

[0136] In conjunction with some embodiments of the fourth aspect, in some embodiments, sending the first information to the terminal includes at least one of the following:

[0137] Sending the first information through radio resource control RRC signaling;

[0138] Sending the first information through a media access control layer control element MAC CE signaling;

[0139] Sending the first information through downlink control information DCI signaling;

[0140] Using a new indication field to carry the first information to send the first information;

[0141] An existing indication field is reused to carry the first information to send the first information.

[0142] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0143] a receiving module, configured to receive first information sent by a network device, wherein the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern;

[0144] Among them, the target preprocessing type is the preprocessing type to be performed by the transmitting end on the modulation symbol before sending the signal, the target preprocessing parameter is the parameter corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

[0145] In combination with some embodiments of the fifth aspect, in some embodiments, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0146] With reference to some embodiments of the fifth aspect, in some embodiments, the uplink channel includes at least one of the following: PUSCH, PUCCH;

[0147] The downlink channel includes at least one of the following: PDSCH and PDCCH.

[0148] In combination with some embodiments of the fifth aspect, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0149] With reference to some embodiments of the fifth aspect, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0150] The first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

[0151] In conjunction with some embodiments of the fifth aspect, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula;

[0152] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of OFDM subcarriers of the channel;

[0153] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0154] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0155] In combination with some embodiments of the fifth aspect, in some embodiments, the target preprocessing parameters are: parameters required for preprocessing using the target preprocessing type.

[0156] In conjunction with some embodiments of the fifth aspect, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0157] The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0158] In conjunction with some embodiments of the fifth aspect, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0159] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the DD domain; the target signal pattern is: a DD domain signal pattern.

[0160] In conjunction with some embodiments of the fifth aspect, in some embodiments, receiving the first information sent by the network device includes at least one of the following:

[0161] Receiving the first information sent by the network device through RRC signaling;

[0162] Receiving the first information sent by the network device through MAC CE signaling;

[0163] Receiving the first information sent by the network device through DCI signaling;

[0164] receiving the first information carried by the network device using a new indication field;

[0165] The receiving network device reuses the first information carried by the existing indication field.

[0166] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the indication method described in the first and second aspects, and the optional implementation methods of the first and second aspects.

[0167] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the network device is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the terminal is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0168] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0169] In a 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, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0170] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0171] It is understandable that the aforementioned network devices, terminals, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0172] The present disclosure provides invention titles. In some embodiments, the terms "indication method" and "information indication method," "information sending method," and "information receiving method" are interchangeable; the terms "indication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0178] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0179] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0180] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0186] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0187] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0188] In some embodiments, the terms "terminal", "terminal device", "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. can be used interchangeably.

[0189] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0190] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0191] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0192] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0193] 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.

[0194] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in the tables are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between the information and the parameters, it is not necessarily required to configure all the correspondences shown in the tables. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments may be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also use other names that the indicating device can understand, and the values ​​or representations of the parameters may also use other values ​​or representations that the indicating device can understand. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0195] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0196] FIG1A is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1A , a communication system 100 may include a terminal 101 and a network device 102. Optionally, the network device is at least one of an access network device and a core network device.

[0197] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, 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 at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0198] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device 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 wireless fidelity (WiFi) system, but is not limited thereto.

[0199] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0200] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0201] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0202] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0203] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0204] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other indication methods, and next-generation systems based on and extending these systems. Furthermore, a combination of multiple systems (e.g., a combination of LTE or LTE-A with 5G) may also be employed.

[0205] Optionally, FIG1B is a signal transmission block diagram in an OTFS system according to an embodiment of the present disclosure. As shown in FIG1B , in the OTFS system, the data modulation symbol x(k, l) is generated in the DD domain, and the transmitter converts the DD domain discrete symbol into a time domain waveform in two steps. First, the modulation symbol x(k, l) is converted from the DD domain to the time-frequency domain through the inverse finite Fourier transform (ISFFT), and then converted to the time domain through the Heisenberg transform and sent to the receiving end through the channel. After the receiving end receives the signal sent by the transmitting end, it uses an operation that is inverse to that of the transmitting end to recover the data. First, the received signal is converted from the time domain to the time-frequency domain through the Wigner transform, and then converted from the time-frequency domain to the DD domain through the SFFT to recover the data. If the Heisenberg transform is specialized as the inverse fast Fourier transform (IFFT) and the Wigner transform is specialized as the fast Fourier transform (FFT), then the inner dashed box in Figure 1B represents an orthogonal frequency division multiplexing (OFDM) system. Therefore, the OTFS-OFDM system can be viewed as a transmission system that adds an ISFFT preprocessing module to the OFDM system's transmitter and an SFFT module to the receiver, thereby achieving the integration of OTFS and OFDM systems.

[0206] Optionally, as shown in FIG1B , in an OTFS system, the modulation symbols are typically pre-processed (i.e., ISFFT transformation) to enable signal transmission. Furthermore, in an OFDM system, the modulation symbols are typically also pre-processed, such as by performing a discrete Fourier transform (DFT) to form a DFT-OFDM waveform for signal transmission.

[0207] However, how the sending end determines which specific preprocessing to use is an urgent problem that needs to be solved.

[0208] FIG2A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to an indication method, which is used in a communication system 100. The method includes:

[0209] Step 2101: The network device determines the target preprocessing type to be performed by the transmitter before sending a signal.

[0210] Optionally, in some embodiments, the transmitting end may be a transmitting end of a channel; the channel may include an uplink channel and / or a downlink channel. Optionally, the uplink channel may include: a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH); the downlink channel may include: a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH). Optionally, the transmitting end may be a network device, or the transmitting end may be a terminal. For example, when the transmitting end is a transmitting end of an uplink channel, the transmitting end may be a terminal; when the transmitting end is a transmitting end of a downlink channel, the transmitting end may be a network device.

[0211] Optionally, the above-mentioned "uplink channel" may carry an uplink signal, for example, the PUCCH may carry a channel quality indication (CQI), a hybrid automatic retransmission request acknowledgment (HARQ-ACK), etc.; the PUSCH may carry uplink control information (UCI). Optionally, the above-mentioned "uplink channel transmitter" may be understood as, for example, a transmitter that sends any uplink signal via the uplink channel.

[0212] Optionally, the aforementioned "downlink channel" may carry a downlink signal, for example, the PDSCH may carry a paging message, and the PDCCH may carry Multimedia Broadcast Multicast Service (MBMS) scheduling information. Optionally, the aforementioned "downlink channel transmitter" may be understood as, for example, a transmitter that sends any downlink signal via the downlink channel.

[0213] In the embodiment of FIG. 2A , the transmitting end is a terminal and the receiving end is a network device as an example for introduction. In this case, the channel sent by the transmitting end may be PUSCH and / or PUCCH.

[0214] Optionally, the preprocessing type can be used to preprocess a modulation symbol, wherein different preprocessing types are used to preprocess the modulation symbols differently. Optionally, the modulation symbol can be, for example: a quadrature amplitude modulation (QAM) modulation symbol, or a binary phase shift keying (BPSK) modulation symbol.

[0215] Optionally, in some embodiments, the target preprocessing type may belong to a first set, which may be an alternative set of target preprocessing types. The first set may include at least one preprocessing type. Optionally, the target preprocessing type may be any preprocessing type in the first set.

[0216] Optionally, in some embodiments, the first set may include a first preprocessing type and / or a second preprocessing type; wherein the first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

[0217] Optionally, the first preprocessing type and the second preprocessing type are described in detail below:

[0218] Optionally, the first preprocessing type may include: DFT preprocessing; the DFT preprocessing includes: performing a DFT transform on a pair of modulation symbols using the following formula; Formula 1:

[0219] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, N in Formula 1 is the number of OFDM subcarriers of the channel (i.e., the channel to be transmitted by the transmitter, such as an uplink channel or a downlink channel); k in Formula 1 = 0, 1, 2...N-1; n in Formula 1 = 0, 1, 2...N-1.

[0220] It should be noted that, optionally, in some embodiments, the first preprocessing type may be a preprocessing performed before a terminal (eg, a power-limited terminal) sends a PUSCH.

[0221] Optionally, the second preprocessing type may include ISFFT preprocessing, and the ISFFT preprocessing may include: performing an ISFFT transform on the modulation symbols using the following formula 2; Formula 2:

[0222] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N in Formula 2 is the number of OTFS symbols of the OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain; in Formula 2, k = 0, 1, 2...N-1; in Formula 2, n = 0, 1, 2...N-1; in Formula 2, m = 0, 1, 2...M-1; in Formula 2, l = 0, 1, 2...M-1.

[0223] Optionally, in some embodiments, the network device may determine the target preprocessing type to be performed by the transmitting end before sending a signal based on the location of the terminal in the serving cell and / or the moving speed of the terminal. Optionally, the method for the network device to determine the target preprocessing type to be performed by the transmitting end before sending a signal may include: when the terminal is located at the edge of the cell, determining that the target preprocessing type to be performed is the first preprocessing type; when the moving speed of the terminal is greater than a first threshold (i.e., when the terminal is moving at a high speed), determining that the target preprocessing type to be performed is the second preprocessing type; when the Doppler frequency deviation of the channel (e.g., the channel between the terminal and the network device) is greater than a second threshold, determining that the target preprocessing type is the second preprocessing type.

[0224] Optionally, in some embodiments, the network device may also first determine whether the transmitting end needs to preprocess the modulation symbols, and when it is determined that the modulation symbols need to be preprocessed, determine the corresponding target preprocessing type. Optionally, when the network device determines that the terminal is located at the edge of the cell, the moving speed of the terminal is greater than the first threshold, and the Doppler frequency deviation of the channel is greater than the second threshold, it is determined that the modulation symbols need to be preprocessed.

[0225] Step 2102: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0226] Optionally, in some embodiments, the target preprocessing parameter may be a parameter required for preprocessing using the target preprocessing type. Optionally, when the target preprocessing type is the first preprocessing type described above, the target preprocessing parameter may include: the number N of OFDM subcarriers of the channel (i.e., the uplink channel and / or downlink channel to be transmitted by the transmitter); or, when the target preprocessing type is the second preprocessing type described above, the target preprocessing parameter may include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0227] Step 2103: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type.

[0228] Optionally, in some embodiments, the target signal mapping method may be a reference signal mapping method; the target signal mapping method may be a reference signal pattern.

[0229] Optionally, in some embodiments, when the target preprocessing type is the first preprocessing type mentioned above, the target signal mapping method may be: mapping the signal to the time-frequency domain (for example, mapping the reference signal to the time-frequency domain), and the target signal pattern may be: time-frequency domain signal pattern; when the target preprocessing type is the second preprocessing type mentioned above, the target signal mapping method may be: mapping the signal to the DD domain (for example, mapping the reference signal to the DD domain), and the target signal pattern may be: DD domain signal pattern.

[0230] Step 2104: The network device sends first information to the terminal.

[0231] Optionally, in some embodiments, the first information may indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0232] Optionally, in some embodiments, the network device sending the first information to the terminal may include at least one of the following:

[0233] Sending first information through Radio Resource Control (RRC) signaling;

[0234] Sending first information through Medium Access Control Control Element (MAC CE) signaling;

[0235] Sending the first information through downlink control information (DCI) signaling;

[0236] Using the new indication field to carry the first information to send the first information;

[0237] The existing indication field is reused to carry the first information to send the first information.

[0238] Step 2105: The terminal sends a signal based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0239] Optionally, in some embodiments, the terminal may first determine a modulation symbol, then preprocess the modulation symbol based on a target preprocessing parameter and using a target preprocessing type, and then transmit the signal using the target signal mapping method and / or target signal pattern. Optionally, the terminal may transmit the signal to a network device.

[0240] Optionally, in some embodiments, when the target preprocessing type is the above-mentioned first preprocessing type, the specific process of the terminal sending the signal may include: the terminal determines the modulation symbol, and based on the first preprocessing type and the target preprocessing parameters corresponding to the first preprocessing type, uses the above-mentioned formula to perform a DFT transform on the modulation symbol, and then converts the DFT transformed signal to the time domain through the Heisenberg transform, and then sends it to the network device through the channel based on the target signal mapping method and / or the target signal pattern.

[0241] Optionally, in some embodiments, when the target preprocessing type is the above-mentioned second preprocessing type, the specific process of the terminal sending the signal may include: the terminal determines the modulation symbol, and based on the second preprocessing type and the target preprocessing parameters corresponding to the second preprocessing type, uses the above-mentioned formula 2 to perform an ISFFT transform on the modulation symbol to convert the modulation symbol from the DD domain to the time-frequency domain, and then converts the ISFFT-transformed signal to the time domain through the Heisenberg transform, and then sends it to the network device through the channel based on the target signal mapping method and / or the target signal pattern.

[0242] Step 2106: The network device determines a signal based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0243] Optionally, the network device may receive the signal based on a target signal mapping mode and / or a target signal pattern, and then perform inverse processing on the received signal based on target preprocessing parameters and a target preprocessing type to restore signal data.

[0244] Optionally, in some embodiments, when the target preprocessing type is the above-mentioned first preprocessing type, the specific process of the network device receiving the signal may include: the network device receives the signal sent by the terminal based on the target signal mapping method and / or the target signal pattern, and then converts the received signal from the time domain to the time-frequency domain through the Wigner transform, and then performs an inverse discrete Fourier transform (IDFT) on the converted time-frequency domain signal to restore the signal data.

[0245] Optionally, in some embodiments, when the target preprocessing type is the second preprocessing type described above, the specific process of the network device receiving the signal may include: the network device receives the signal sent by the terminal based on the target signal mapping method and / or the target signal pattern, then converts the received signal from the time domain to the time-frequency domain through a Wigner transform, and then converts the received signal from the time-frequency domain to the DD domain through an SFFT to recover the signal data. Optionally, the network device may perform an SFFT transform on the time-frequency domain signal based on the following formula 3 to convert the signal from the time-frequency domain to the DD domain to recover the signal data. Formula 3:

[0246] Wherein, X′[n,m] is the signal before SFFT processing (i.e., the time-frequency domain signal), x′[k,l] is the signal after SFFT processing (i.e., the DD domain signal), N in Formula 3 is the number of OTFS subcarriers of the OFDM system scheduling unit in the frequency domain, and M is the number of OTFS symbols of the OFDM system scheduling unit in the time domain.

[0247] The indication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 may be implemented as an independent embodiment, and step S2102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0248] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0249] FIG2B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to an indication method, which is used in a communication system 100. The method includes:

[0250] Step 2201: The network device determines the target preprocessing type to be performed by the transmitter before sending a signal.

[0251] Optionally, in some embodiments, the transmitting end may be the transmitting end of a channel; the channel may include an uplink channel and / or a downlink channel. Optionally, the uplink channel may include: PUSCH, PUCCH; the downlink channel may include: PDSCH, PDCCH. Optionally, the transmitting end may be a network device, or the transmitting end may be a terminal. For example, when the transmitting end is the transmitting end of an uplink channel, the transmitting end may be a terminal; when the transmitting end is the transmitting end of a downlink channel, the transmitting end may be a network device. In the embodiment of FIG. 2B , the transmitting end is described as a network device and the receiving end is a terminal. In this case, the channel transmitted by the transmitting end may be PDSCH and / or PDCCH.

[0252] Step 2202: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0253] Step 2203: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type.

[0254] Step 2204: The network device sends first information to the terminal.

[0255] For a detailed description of steps 2201 - 2204 , please refer to the above embodiment description.

[0256] Step 2205: The network device sends a signal based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0257] Optionally, in some embodiments, the network device may first determine a modulation symbol, then preprocess the modulation symbol based on a target preprocessing parameter and using a target preprocessing type, and then transmit the signal using the target signal mapping method and / or target signal pattern. Optionally, the network device may transmit the signal to the terminal.

[0258] The specific process of the network device sending a signal is similar to the specific process of the terminal sending a signal in the above step 2105, and will not be repeated here.

[0259] Step 2206: The terminal determines a signal based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0260] Optionally, the terminal may receive the signal based on a target signal mapping mode and / or a target signal pattern, and then perform inverse processing on the received signal based on a target preprocessing parameter and a target preprocessing type to restore signal data.

[0261] The specific process of the terminal recovering the signal data is similar to the specific process of the network device recovering the signal data in the above step 2106, and will not be repeated here.

[0262] The indication method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2206. For example, step S2201 may be implemented as an independent embodiment, and step S2202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0263] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0264] FIG3A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to an indication method for a network device 102, the method comprising:

[0265] Step 3101: The network device determines the target preprocessing type to be performed by the transmitter before sending a signal.

[0266] Step 3102: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0267] Step 3103: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type.

[0268] Step 3104: The network device sends first information to the terminal.

[0269] Step 3105: The network device receives a signal sent by the terminal based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0270] For a detailed description of steps 3101 - 3105 , please refer to the above embodiment description.

[0271] The indication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3105. For example, step S3101 may be implemented as an independent embodiment, and step S3102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0272] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0273] FIG3B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to an indication method for a network device 102, the method comprising:

[0274] Step 3201: The network device determines the target preprocessing type to be performed by the transmitter before sending a signal.

[0275] Step 3202: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0276] Step 3203: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type.

[0277] Step 3204: The network device sends first information to the terminal.

[0278] Step 3205: The network device sends a signal to the terminal based on at least one of the target preprocessing type, the target preprocessing parameters, the target signal mapping mode, and the target signal pattern.

[0279] For a detailed description of steps 3201 - 3205 , please refer to the above embodiment description.

[0280] The indication method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3205. For example, step S3201 may be implemented as an independent embodiment, and step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0281] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0282] FIG3C is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to an indication method for a network device 102, the method comprising:

[0283] Step 3301: The network device determines the target preprocessing type to be performed by the transmitter before sending a signal.

[0284] Step 3302: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0285] Step 3303: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type.

[0286] Step 3304: The network device sends first information to the terminal.

[0287] Optionally, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0288] Optionally, in some embodiments, the uplink channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH;

[0289] The downlink channel includes at least one of the following: a physical downlink shared channel PDSCH and a physical downlink control channel PDCCH.

[0290] Optionally, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0291] Optionally, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0292] The first preprocessing type is used to perform discrete Fourier transform (DFT) preprocessing on the modulation symbols, and the second preprocessing type is used to perform inverse finite Fourier transform (ISFFT) preprocessing on the modulation symbols.

[0293] Optionally, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula:

[0294] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of orthogonal frequency division multiplexing (OFDM) subcarriers of the channel;

[0295] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0296] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the orthogonal time-frequency-space (OTFS) system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0297] Optionally, in some embodiments, determining a target preprocessing type to be performed by the transmitting end before sending the signal includes:

[0298] The terminal is located at a cell edge, and determines that the target preprocessing type is the first preprocessing type;

[0299] The moving speed of the terminal is greater than a first threshold, determining that the target preprocessing type is the second preprocessing type;

[0300] The Doppler frequency deviation of the channel is greater than a second threshold, and the target preprocessing type is determined to be the second preprocessing type.

[0301] Optionally, in some embodiments, the target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

[0302] Optionally, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0303] The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0304] Optionally, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0305] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the delay Doppler DD domain; the target signal pattern is: a DD domain signal pattern.

[0306] Optionally, in some embodiments, sending the first information to the terminal includes at least one of the following:

[0307] Sending the first information through radio resource control RRC signaling;

[0308] Sending the first information through a media access control layer control element MAC CE signaling;

[0309] Sending the first information through downlink control information DCI signaling;

[0310] Using a new indication field to carry the first information to send the first information;

[0311] An existing indication field is reused to carry the first information to send the first information.

[0312] For a detailed description of steps 3301 - 3304 , please refer to the above embodiment description.

[0313] The indication method involved in the embodiment of the present disclosure may include at least one of steps S3301 to S3204. For example, step S3301 may be implemented as an independent embodiment, and step S3302 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0314] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0315] FIG4A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to an indication method, which is used in a terminal 101 and includes:

[0316] Step 4101: The terminal receives the first information sent by the network device.

[0317] Step 4102: The terminal sends a signal to the network device based on at least one of the target preprocessing type, the target preprocessing parameter, the target signal mapping mode, and the target signal pattern.

[0318] For a detailed description of steps 4101-4102, please refer to the above embodiment description.

[0319] The indication method involved in the embodiment of the present disclosure may include at least one of steps S4101 and S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment.

[0320] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0321] FIG4B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to an indication method, which is used in terminal 101 and includes:

[0322] Step 4201: The terminal receives the first information sent by the network device.

[0323] Step 4202: The terminal receives a signal sent by the network device based on at least one of a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0324] For a detailed description of steps 4201-4202, please refer to the above embodiment description.

[0325] The indication method involved in the embodiment of the present disclosure may include at least one of steps S4201 and S4202. For example, step S4201 may be implemented as an independent embodiment, and step S4202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0326] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0327] FIG4C is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to an indication method for terminal 101, the method comprising:

[0328] Step 4301: The terminal receives first information sent by the network device.

[0329] Optionally, in some embodiments, the transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

[0330] Optionally, in some embodiments, the uplink channel includes at least one of the following: PUSCH, PUCCH;

[0331] The downlink channel includes at least one of the following: PDSCH and PDCCH.

[0332] Optionally, in some embodiments, the target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

[0333] Optionally, in some embodiments, the first set includes a first preprocessing type and / or a second preprocessing type;

[0334] The first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

[0335] Optionally, in some embodiments, the DFT preprocessing includes: performing a DFT transform on the modulation symbol using the following formula:

[0336] Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of OFDM subcarriers of the channel;

[0337] The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2;

[0338] Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0339] Optionally, in some embodiments, the target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

[0340] Optionally, in some embodiments, the target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel;

[0341] The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

[0342] Optionally, in some embodiments, the target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern;

[0343] The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the DD domain; the target signal pattern is: a DD domain signal pattern.

[0344] Optionally, in some embodiments, the receiving of the first information sent by the network device includes at least one of the following:

[0345] Receiving the first information sent by the network device through RRC signaling;

[0346] Receiving the first information sent by the network device through MAC CE signaling;

[0347] Receiving the first information sent by the network device through DCI signaling;

[0348] receiving the first information carried by the network device using a new indication field;

[0349] The receiving network device reuses the first information carried by the existing indication field.

[0350] For a detailed description of step 4301, please refer to the above embodiment description.

[0351] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0352] Figure 5 is a flow chart of an indication method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to an indication method for a communication system including a terminal and a network device, wherein the method includes at least one of the following:

[0353] Step 5101: The network device determines a target preprocessing type to be performed by the transmitter before transmitting a signal, wherein different preprocessing types are used to perform different preprocessing on modulation symbols;

[0354] Step 5102: The network device determines target preprocessing parameters corresponding to the target preprocessing type.

[0355] Step 5103: The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0356] Step 5104: The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern.

[0357] Step 5105: The terminal receives the first information sent by the network device.

[0358] Optional implementations of steps 5101 to 5105 may refer to the description of the above embodiment.

[0359] In some embodiments, the above method may include the methods of the above embodiments of the communication system side, network device side, terminal side, etc., which will not be repeated here.

[0360] The indication method involved in the embodiment of the present disclosure may include at least one of steps S5101 to S5105. For example, step S5101 may be implemented as an independent embodiment, and step S5102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0361] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0362] The following is an exemplary introduction to the above method.

[0363] 1. Network side

[0364] 1. Determine whether the uplink / downlink channel transmitter needs preprocessing before OFDM modulation. The uplink / downlink channels include: PDSCH, PDCCH, PUSCH, PUCCH

[0365] 2. Select the pre-processing type, which includes

[0366] 1) DFT preprocessing: perform a DFT transform on the modulation symbols

[0367] 2) ISFFT preprocessing: Perform two-dimensional mapping on the data stream and perform an ISFFT transform on the modulation symbols

[0368] 3. Indicate the pre-processing type to the terminal. The indication can be through the following signaling, including:

[0369] 1)RRC signaling

[0370] 2) MAC CE signaling

[0371] 3) DCI signaling

[0372] 4) The indication signaling can be indicated by introducing a new pre-processing indication field or reusing the existing indication field

[0373] 4. Determine the preprocessing parameter set based on the preprocessing type

[0374] 1) Method 1: Number of frequency domain subcarriers N

[0375] 2) Mode 2: Number of OTFS symbols in the delay domain N, number of OTFS subcarriers in the doppler domain M

[0376] 5. Determine the reference signal sending or receiving method and pattern based on the preprocessing type

[0377] 1) Method 1: Send and receive reference signals in the time-frequency domain and determine the time-frequency domain reference target signal pattern

[0378] 2) Method 2: Send and receive reference signals in the delay-doppler domain and determine the delay-doppler domain reference target signal pattern

[0379] 6. Indicate the parameter set, reference signal transmission and reception mode and pattern to the terminal

[0380] 2. Terminal side

[0381] 1. Receive network-side preprocessing type indication and determine the uplink / downlink channel preprocessing type

[0382] 2. Receive parameter set indicated by network side

[0383] 3. Receive the reference signal sending / receiving mode and reference target signal pattern indicated by the network side

[0384] Notes section:

[0385] Assuming that the delay-Doppler domain data symbol is x[k,l] and the time-frequency domain information symbol is X[n,m], the conversion between the delay-Doppler information symbol and the time-frequency domain information symbol is as follows:

[0386] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0387] 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.

[0388] 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.

[0389] FIG6A is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in FIG6A , the network device includes:

[0390] a processing module, configured to determine a target preprocessing type to be performed by the transmitter before transmitting a signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols;

[0391] The processing module is further configured to determine target preprocessing parameters corresponding to the target preprocessing type;

[0392] The processing module is further configured to determine at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type;

[0393] The sending module is used to send first information to the terminal, where the first information is used to indicate at least one of the following: target preprocessing type, target preprocessing parameters, target signal mapping mode, and target signal pattern.

[0394] Optionally, the above-mentioned processing module is used to execute the steps related to "processing" performed by the network device 102 in any of the above methods, and the above-mentioned sending module is used to execute the steps related to "sending" performed by the network device 102 in any of the above methods. Optionally, the network device also includes a receiving module, and the above-mentioned receiving module is used to execute the steps related to receiving performed by the network device 102 in any of the above methods.

[0395] FIG6B is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6B , the terminal includes:

[0396] a receiving module, configured to receive first information sent by a network device, wherein the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern;

[0397] Among them, the target preprocessing type is the preprocessing type to be performed by the transmitting end on the modulation symbol before sending the signal, the target preprocessing parameter is the parameter corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method of the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

[0398] Optionally, the above-mentioned receiving module is used to execute the steps related to "receiving" performed by the terminal 101 in any of the above methods. Optionally, the terminal also includes at least one of a processing module and a sending module. The above-mentioned processing module is used to execute the steps related to processing performed by the terminal 101 in any of the above methods, and the above-mentioned sending module is used to execute the steps related to sending performed by the terminal 101 in any of the above methods. No further details are given here.

[0399] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0400] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 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 the communication protocol and communication data, and the central processing unit can be used to control the indicating 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 processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0401] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0402] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0403] In some embodiments, a transceiver may include a receiver and a transmitter, which 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.

[0404] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0405] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. 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.

[0406] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0407] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0408] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0409] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0410] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes 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.

[0411] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0412] 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.

[0413] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0414] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0415] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0416] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for indicating, characterized in that: The method comprises at least one of the following: The network device determines a target preprocessing type to be performed by the transmitter before sending a signal, wherein different preprocessing types are used to perform different preprocessing on modulation symbols; The network device determines a target preprocessing parameter corresponding to the target preprocessing type; The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type; The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, the target signal mapping method, and the target signal pattern.

2. The method according to claim 1, characterized in that The transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

3. The method according to claim 2, characterized in that The uplink channel includes at least one of the following: a physical uplink shared channel PUSCH and a physical uplink control channel PUCCH; The downlink channel includes at least one of the following: a physical downlink shared channel PDSCH and a physical downlink control channel PDCCH.

4. The method according to any one of claims 1 to 3, characterized in that: The target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

5. The method according to claim 4, characterized in that The first set includes a first preprocessing type and / or a second preprocessing type; The first preprocessing type is used to perform discrete Fourier transform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform inverse finite Fourier transform ISFFT preprocessing on the modulation symbols.

6. The method according to claim 5, characterized in that The DFT preprocessing includes: performing a DFT transformation on the modulation symbol using the following formula; Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of orthogonal frequency division multiplexing OFDM subcarriers of the channel; The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2; Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the orthogonal time-frequency-space OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

7. The method according to claim 5 or 6, characterized in that The determining of the target preprocessing type to be performed by the transmitting end before sending the signal includes: The terminal is located at a cell edge, and determines that the target preprocessing type is the first preprocessing type; The moving speed of the terminal is greater than a first threshold, determining that the target preprocessing type is the second preprocessing type; The Doppler frequency deviation of the channel is greater than a second threshold, and the target preprocessing type is determined to be the second preprocessing type.

8. The method according to claim 6, characterized in that The target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

9. The method according to claim 8, characterized in that The target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel; The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: at least one of the number N of OTFS symbols of the OTFS system scheduling unit in the delay domain and the number M of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

10. The method according to any one of claims 5 to 9, characterized in that: The target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern; The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the delay Doppler DD domain; the target signal pattern is: a DD domain signal pattern.

11. The method according to any one of claims 1 to 10, characterized in that: The sending of the first information to the terminal includes at least one of the following: Sending the first information through radio resource control RRC signaling; Sending the first information through a media access control layer control unit MAC CE signaling; Sending the first information through downlink control information DCI signaling; Using a new indication field to carry the first information to send the first information; The existing indication field is reused to carry the first information to send the first information.

12. A method of indicating, characterized in that: The method comprises: The terminal receives first information sent by the network device, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode of a signal, and a target signal pattern; Among them, the target preprocessing type is the preprocessing type that the transmitter needs to perform on the modulation symbols before sending the signal, the target preprocessing parameters are the parameters corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

13. The method according to claim 12, characterized in that The transmitting end is a transmitting end of a channel; the channel includes an uplink channel and / or a downlink channel.

14. The method according to claim 13, characterized in that The uplink channel includes at least one of the following: PUSCH, PUCCH; The downlink channel includes at least one of the following: PDSCH and PDCCH.

15. The method according to any one of claims 12 to 14, characterized in that: The target preprocessing type belongs to a first set, the first set is an alternative set of the target preprocessing type, and the first set includes at least one preprocessing type.

16. The method according to claim 15, characterized in that The first set includes a first preprocessing type and / or a second preprocessing type; The first preprocessing type is used to perform DFT preprocessing on the modulation symbols, and the second preprocessing type is used to perform ISFFT preprocessing on the modulation symbols.

17. The method according to claim 16, characterized in that The DFT preprocessing includes: performing a DFT transformation on the modulation symbol using the following formula; Wherein, X[n] is the signal obtained after DFT preprocessing, x[k] is the modulation symbol before DFT preprocessing, and N is the number of OFDM subcarriers of the channel; The ISFFT preprocessing includes: performing an ISFFT transformation on the modulation symbol using the following formula 2; Wherein, X[n,m] is the signal obtained after ISFFT preprocessing, x[k,l] is the modulation symbol before ISFFT preprocessing, N is the number of OTFS symbols of the OTFS system scheduling unit in the delay domain, and M is the number of OTFS subcarriers of the OTFS system scheduling unit in the Doppler domain.

18. The method according to claim 17, characterized in that The target preprocessing parameters are parameters required for preprocessing using the target preprocessing type.

19. The method according to claim 18, characterized in that The target preprocessing type is a first preprocessing type, and the target preprocessing parameters include: the number N of OFDM subcarriers of the channel; The target preprocessing type is the second preprocessing type, and the target preprocessing parameters include: the OTFS system scheduling unit in the delay domain At least one of the number of OTFS symbols N and the number of OTFS subcarriers M of the OTFS system scheduling unit in the Doppler domain.

20. The method according to any one of claims 12 to 19, characterized in that: The target preprocessing type is the first preprocessing type, the target signal mapping method is: mapping the signal to the time-frequency domain; the target signal pattern is: a time-frequency domain signal pattern; The target preprocessing type is the second preprocessing type, the target signal mapping method is: mapping the signal to the DD domain; the target signal pattern is: a DD domain signal pattern.

21. The method according to any one of claims 12 to 20, characterized in that: The receiving of the first information sent by the network device includes at least one of the following: Receiving the first information sent by the network device through RRC signaling; Receiving the first information sent by the network device through MAC CE signaling; Receiving the first information sent by the network device through DCI signaling; Receiving the first information carried by the network device using a new indication field; The receiving network device reuses the first information carried by the existing indication field.

22. A method of indicating, characterized in that: Applied to a communication system, the communication system includes a terminal and a network device, and the method includes: The network device determines a target preprocessing type to be performed by the transmitter before sending a signal, wherein different preprocessing types are used to perform different preprocessing on modulation symbols; The network device determines a target preprocessing parameter corresponding to the target preprocessing type; The network device determines at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type; The network device sends first information to the terminal, where the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern; The terminal receives first information sent by the network device.

23. A network device comprising: A processing module, used to determine a target preprocessing type to be performed by the transmitter before sending a signal, wherein different preprocessing types are used to perform different preprocessing on the modulation symbols; The processing module is further used to determine the target preprocessing parameters corresponding to the target preprocessing type; The processing module is further used to determine at least one of a target signal mapping mode and a target signal pattern corresponding to the signal under the target preprocessing type; The sending module is used to send first information to the terminal, where the first information is used to indicate at least one of the following: target preprocessing type, target preprocessing parameters, the target signal mapping method, and the target signal pattern.

24. A terminal, comprising: A receiving module, configured to receive first information sent by a network device, wherein the first information is used to indicate at least one of the following: a target preprocessing type, a target preprocessing parameter, a target signal mapping mode, and a target signal pattern; Among them, the target preprocessing type is the preprocessing type that the transmitter needs to perform on the modulation symbols before sending the signal, the target preprocessing parameters are the parameters corresponding to the target preprocessing type, the target signal mapping method is the signal mapping method corresponding to the signal under the target preprocessing type, and the target signal pattern is the signal pattern of the signal under the target preprocessing type.

25. A network device, characterized in that: include: One or more processors; The processor is used to call instructions so that the network device executes the indication method described in any one of claims 1-11.

26. A terminal, characterized in that: include: One or more processors; The processor is used to call instructions so that the terminal executes the indication method described in any one of claims 12-21.

27. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the network device is configured to implement the indication method according to any one of claims 1 to 11, and the terminal is configured to implement the indication method according to any one of claims 12 to 21.

28. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device is caused to execute the indication method according to any one of claims 1-11 and 12-21.

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