Communication method and apparatus

Abstract

The present invention relates to the technical field of communications, and provides a communication method and apparatus. The method comprises: sending a first parameter to a terminal, wherein the first parameter is used for indicating configuration information of a reference signal sent and / or received under an orthogonal time frequency and space (OTFS) modulation system. The sending position of a reference signal is determined by means of parameter configuration, and such a method can be applied to sending of a reference signal in an OTFS system, so as to match a delay-Doppler channel change.

Description

A communication method and apparatus Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a communication method and apparatus. Background Art

[0002] Orthogonal Time Frequency and Space (OTFS) modulation is a two-dimensional modulation scheme designed in the delay-Doppler (DD) domain. Through two-dimensional transformation, a two-dispersion channel can be converted into an approximately flat fading channel in the delay-Doppler domain. The data of the OTFS system is mapped in the delay-Doppler domain and passes through the delay-Doppler domain channel.

[0003] Summary of the Invention

[0004] The communication method and apparatus proposed by the present disclosure determine a reference signal transmission scheme in an OTFS system. By configuring parameters, the transmission position of the reference signal can be determined, which can be applied to the transmission of the reference signal in the OTFS system to match the changes of the delay-Doppler channel.

[0005] In a first aspect, an embodiment of the present disclosure provides a communication method, which is executed by a network device and includes: determining a first parameter, where the first parameter is used to indicate the configuration information of a reference signal transmitted and / or received in an Orthogonal Time Frequency and Space (OTFS) modulation system.

[0006] In some embodiments of the present disclosure, the method further includes: sending the first parameter to a terminal.

[0007] In some embodiments of the present disclosure, the method further includes: based on the first parameter, determining the frame number for transmitting and / or receiving the reference signal; transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number.

[0008] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q; △Q, the frame number offset of the first transmitted reference signal in the second reference signal relative to the frame number of the first transmitted reference signal in the first reference signal, where 0 ≤ △Q < Q.

[0009] In some embodiments of the present disclosure, determining the frame number for transmitting and / or receiving the reference signal based on the first parameter includes: determining the maximum value P of the system frame number; based on the first parameter and P, determining the frame number p for transmitting and / or receiving the first reference signal q ; where, transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: on p qA first reference signal is sent and / or received on the corresponding OTFS frame.

[0010] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for sending and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q and q. q .

[0011] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for sending and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q, Δp and q. q .

[0012] In some embodiments of the present disclosure, determining the frame number for sending and / or receiving the reference signal based on the first parameter includes: q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a ; wherein, sending and / or receiving a reference signal on an OTFS frame corresponding to a frame number includes: a A second reference signal is sent and / or received on the corresponding OTFS frame.

[0013] In some embodiments of the present disclosure, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the method also included: determining whether to configure a second reference signal.

[0014] In some embodiments of the present disclosure, sending the first parameter to the terminal includes: sending first signaling to the terminal, where the first signaling carries the first parameter.

[0015] In a second aspect, an embodiment of the present disclosure provides a communication method, which is executed by a terminal, and the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system.

[0016] In some embodiments of the present disclosure, determining the first parameter includes: receiving the first parameter sent by a network device.

[0017] In some embodiments of the present disclosure, the method further includes: determining a frame number for sending and / or receiving a reference signal based on the first parameter; and sending and / or receiving the reference signal on an OTFS frame corresponding to the frame number.

[0018] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q; △Q, the frame number offset of the first transmitted reference signal of the second reference signal relative to the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0019] In some embodiments of the present disclosure, based on the first parameter, determining the frame number for transmitting and / or receiving the reference signal includes: determining the maximum system frame number P; based on the first parameter and P, determining the frame number p for transmitting and / or receiving the first reference signal q ; wherein, transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: transmitting and / or receiving the first reference signal on the OTFS frame corresponding to p q corresponding OTFS frame.

[0020] In some embodiments of the present disclosure, based on the first parameter and P, determining the frame number p for transmitting and / or receiving the first reference signal q includes: determining a second parameter q based on Q and P; determining p based on Q and q q .

[0021] In some embodiments of the present disclosure, based on the first parameter and P, determining the frame number p for transmitting and / or receiving the first reference signal q includes: determining a second parameter q based on Q and P; determining p based on Q, △p, and q q .

[0022] In some embodiments of the present disclosure, based on the first parameter, determining the frame number for transmitting and / or receiving the reference signal includes: based on p q and △Q, determining the frame number p for transmitting and / or receiving the second reference signal a ; wherein, transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: transmitting and / or receiving the second reference signal on the OTFS frame corresponding to p a corresponding OTFS frame.

[0023] In some embodiments of the present disclosure, based on p q and △Q, determining the frame number p for transmitting and / or receiving the second reference signal a before that, the method further includes: receiving the first information sent by the network device, where the first information is used to indicate whether to configure the second reference signal.

[0024] In some embodiments of the present disclosure, receiving the first parameter sent by the network device includes: receiving the first signaling sent by the network device, where the first signaling carries the first parameter.

[0025] In a third aspect, an embodiment of the present disclosure provides a communication device, comprising a transceiver module, configured to send a first parameter to a terminal, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0026] In a fourth aspect, an embodiment of the present disclosure provides a communication device, comprising a transceiver module for receiving a first parameter sent by a network device, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system.

[0027] In a fifth aspect, an embodiment of the present disclosure provides a communication device, comprising: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, so that the device executes the above-mentioned first and second aspects of the method.

[0028] In a sixth aspect, an embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the above-mentioned first and second aspects of the method can be implemented.

[0029] In a seventh aspect, an embodiment of the present disclosure provides a communication system, characterized in that it includes: a network device and a terminal, wherein the network device is used to execute the above-mentioned first aspect method; and the terminal is used to execute the above-mentioned second aspect method. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

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

[0032] FIG2 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0033] FIG3 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0034] FIG4 is a reference signal pattern provided by an embodiment of the present disclosure;

[0035] FIG5 is a schematic diagram of a reference signal transmission solution provided by an embodiment of the present disclosure;

[0036] FIG6 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0037] FIG7 is a schematic diagram of a reference signal transmission solution provided by an embodiment of the present disclosure;

[0038] FIG8 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0039] FIG9 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0040] FIG10 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0041] FIG11 is an exemplary diagram of a communication interaction method provided by an embodiment of the present disclosure;

[0042] FIG12 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0043] FIG13 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0044] FIG14 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0045] FIG15 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0046] FIG16 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0047] FIG17 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure as a chip or a chip system;

[0048] FIG18 is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0050] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0051] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0052] 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.

[0053] 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.

[0054] In some embodiments, the access network device, core network device, or network device may be replaced by a terminal. For example, the communication between the access network device, core network device, or network device and the terminal is replaced by the communication between multiple terminals (for example, also referred to as

[0055] The embodiments of the present disclosure may also be applied to structures such as device-to-device, vehicle-to-everything (V2X), etc. In this case, the terminal may also have a structure that has all or part of the functions of the access network device. In addition, the terms "uplink" and "downlink" may be replaced with a language corresponding to inter-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc. may be replaced with side channel, and uplink, downlink, etc. may be replaced with side link.

[0056] 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.

[0057] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "code word", "code point", "bit", "data", "program", and "chip" can be used interchangeably.

[0058] In some embodiments, the terms "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" and the like may be used interchangeably.

[0059] In some embodiments, the terms "reference signal", "pilot", etc. can be used interchangeably.

[0060] In some embodiments, the description “A to B” or the like indicates that the included range includes A and B.

[0061] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0062] To facilitate understanding, the terms involved in this application are first introduced.

[0063] Orthogonal time-frequency air modulation,

[0064] Orthogonal time-frequency-space modulation is a two-dimensional modulation scheme designed in the delay-Doppler domain. Through a series of two-dimensional transformations, it can convert a dual-dispersion channel into a nearly flat-fading channel in the delay-Doppler domain. In this domain, every symbol in a data frame experiences the same, nearly constant fading.

[0065] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and one terminal device. The number and configuration of devices shown in Figure 1 are for example purposes only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. The communication system shown in Figure 1 includes, for example, one network device 101 and one terminal device 102.

[0066] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems. For example, long term evolution (LTE) systems, fifth generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems. It should also be noted that the side link in the embodiments of the present disclosure can also be referred to as a side link or a direct link.

[0067] The network device 101 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present disclosure can be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the network device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0068] The terminal device 102 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device may be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving (self-driving), a wireless terminal device in remote medical surgery (remote medical surgery), a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0069] The communication system described in the embodiments of the present disclosure is intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. A person skilled in the art will appreciate that, with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0070] It should be noted that the communication method provided in any embodiment of the present disclosure can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with any technical solution in related technologies.

[0071] The reference signal pattern determination method and apparatus provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0072] FIG2 is a flow chart of a communication method provided by an embodiment of the present disclosure. The method is executed by a network device. As shown in FIG2 , the communication method may include the following steps:

[0073] Step 201: Determine a first parameter.

[0074] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0075] In the embodiments of the present disclosure, the network device may serve as a transmitter device of the reference signal or as a receiver device of the reference signal, and the present disclosure does not limit this.

[0076] In an embodiment of the present disclosure, the first parameter may be one or more parameters.

[0077] In the embodiments of the present disclosure, there is no restriction on the type of reference signal, which may be, for example, a reference signal for channel estimation, a reference signal for signal demodulation, and a reference signal for beam measurement, etc. Specifically, the reference signal includes but is not limited to DMRS (Demodulation Reference Signal), CSI-RS (Channel State Information Reference Signal), PT-RS (Phase-tracking reference signals), SRS (Sounding Reference Signal), etc.

[0078] In some embodiments of the present disclosure, if the network device acts as a sending device of a reference signal, the first parameter is used to indicate the configuration information of the network device for sending the reference signal under the OTFS modulation system, and the configuration information indicated by the first parameter is used to configure a downlink reference signal such as SRS. If the network device acts as a receiving device of a reference signal, the first parameter is used to indicate the configuration information of the network device for receiving the reference signal under the OTFS modulation system, and the configuration information indicated by the first parameter is used to configure an uplink reference signal such as DMRS.

[0079] In some embodiments of the present disclosure, data mapping of the OTFS modulation system is completed in the delay-Doppler domain. The data passes through the delay-Doppler domain channel. If the device receiving the data wants to demodulate the data, it is necessary to perform channel estimation on the delay-Doppler domain channel. The delay-Doppler channel changes with the movement of the terminal. Therefore, a reference signal is inserted into different OTFS frames to match the delay-Doppler channel changes.

[0080] In some embodiments of the present disclosure, after determining the first parameter, the method may further include: sending the first parameter to the terminal. In some embodiments of the present disclosure, the method may further include: determining a frame number for sending and / or receiving a reference signal based on the first parameter, and sending and / or receiving the reference signal in an OTF S frame corresponding to the frame number.

[0081] In other words, based on the first parameter, it can be determined in which OTFS frames the reference signal is transmitted and / or received, that is, in which OTFS frames the reference signal is inserted.

[0082] In some embodiments of the present disclosure, the density of sending and / or receiving reference signals is related to the speed of the delay-Doppler domain channel change. The density of sending and / or receiving reference signals can be controlled by adjusting the first parameter. For example, if the delay-Doppler domain changes rapidly, the density of the reference signal needs to be increased. The first parameter configuration is used to send and / or receive reference signals on more OTFS frames.

[0083] In some embodiments of the present disclosure, if the network device acts as a reference signal transmitter and the terminal acts as a reference signal receiver, the network device configures a first parameter and sends the first parameter to the terminal, the network device determines the frame number for sending the reference signal based on the first parameter, and sends the reference signal on the OTFS frame corresponding to the frame number, and the terminal determines the frame number for receiving the reference signal based on the first parameter, and receives the reference signal on the OTFS frame corresponding to the frame number.

[0084] In some embodiments of the present disclosure, if the terminal serves as a reference signal transmitter and the network device serves as a reference signal receiver, the network device configures a first parameter and sends the first parameter to the terminal. The terminal determines the frame number for sending the reference signal based on the first parameter and sends the reference signal on the OTFS frame corresponding to the frame number. The network device determines the frame number for receiving the reference signal based on the first parameter and receives the reference signal on the OTFS frame corresponding to the frame number.

[0085] In some embodiments of the present disclosure, it is not limited to sending the first parameter to the terminal before each transmission and / or reception of the reference signal. The first parameter can be determined and sent to the terminal at intervals of a preset time or under preset circumstances. For example, when the first parameter needs to be updated, the network device updates the configuration of the first parameter and sends the configured first parameter to the terminal. The first parameter is sent to the terminal at intervals of a preset time. For example, every few transmission or reception cycles of the reference signal, the network device determines the first parameter and sends the first parameter to the terminal. In some embodiments of the present disclosure, the network device determines the frame number for sending and / or receiving the reference signal based on the first parameter. The first parameter can be the first parameter sent to the terminal after the network device configures it, or it can be the first parameter configured most recently.

[0086] In some embodiments of the present disclosure, sending the first parameter to the terminal includes: sending first signaling to the terminal, where the first signaling carries the first parameter.

[0087] In some embodiments of the present disclosure, the first signaling may be RRC (Radio Resource Control) signaling or MAC CE (MAC Control Element) or DCI (Downlink Control Information), or other downlink signaling, which is not limited by the present disclosure.

[0088] In some embodiments of the present disclosure, the network device does not send the first parameter to the terminal in real time, and the first parameter is intermittently sent with downlink signaling such as RRC, MAC CE, or DCI.

[0089] In some embodiments of the present disclosure, if the network device acts as a transmitting device, the method further includes: determining a reference signal pattern; determining a scheduling unit used to send the reference signal in the delay-Doppler domain; mapping the reference signal to the scheduling unit based on the reference signal sending position in the reference signal pattern; and sending the reference signal through the scheduling unit.

[0090] In some embodiments of the present disclosure, if the network device acts as a receiving device, the method further includes: receiving a reference signal pattern indicated by a transmitting device, and mapping the signal pattern to a scheduling unit; receiving a signal sent by the transmitting device based on a scheduling unit in the delay-Doppler domain; and performing any one of channel estimation, demodulation, and beam measurement based on the signal.

[0091] In some embodiments of the present disclosure, a reference signal pattern is used in an OTFS modulation system. The reference signal pattern is agreed upon by a protocol. The reference signal pattern can be determined based on the number of antenna ports and some configuration parameters. The reference signal pattern can indicate information such as a reference signal sending position and a data sending position. Optionally, in some embodiments, a guard interval is provided between the reference signal sending position and the data sending position.

[0092] In some embodiments of the present disclosure, different antenna ports use the same reference signal pattern, and different antenna ports correspond to different reference signal sequences. The reference signal sequences are mapped to the scheduling unit for transmission to ensure orthogonality of the reference signal transmission.

[0093] In some embodiments of the present disclosure, the reference signal pattern is associated with the number of antenna ports, and different antenna ports correspond to different reference signal patterns. The transmitting device or the receiving device can determine the reference signal pattern based on the number of antenna ports required to send the reference signal.

[0094] In some embodiments of the present disclosure, there is no restriction on the relationship between reference signals and reference signal patterns, and the relationship may be, for example, one-to-one or many-to-one; that is, each reference signal may uniquely correspond to a reference signal pattern, and a corresponding reference signal may be transmitted using a specific reference signal pattern. Alternatively, multiple reference signals may correspond to one reference signal pattern, respectively, and multiple reference signals may be transmitted using the same reference signal pattern.

[0095] In some embodiments of the present disclosure, the scheduling unit is specifically an OTFS frame. By configuring the first parameter, it can be determined on which OTFS frame the reference signal is sent / received. Furthermore, according to the reference signal pattern, the reference signal is mapped to the corresponding OTFS frame for transmission, or the reference signal is received on the corresponding OTFS frame. This method can be applicable to scenarios with one or more antenna ports.

[0096] In summary, according to the communication method provided by the present disclosure, the method is executed by a network device, and the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, and configuring the reference signal sending position by the parameter, which can be applied to the reference signal sending in the OTFS system to match the delay-Doppler channel change.

[0097] FIG3 is a flow chart of a communication method provided by an embodiment of the present disclosure. The method is executed by a network device. As shown in FIG3 , based on the embodiment shown in FIG2 , the communication method includes the following steps:

[0098] Step 301: Determine a first parameter.

[0099] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0100] In some embodiments of the present disclosure, the method further includes: sending the first parameter to the terminal. In some embodiments of the present disclosure, sending the first parameter to the terminal includes: sending first signaling to the terminal, wherein the first signaling carries the first parameter.

[0101] The specific implementation of the above step 301 can refer to step 201 in the embodiment shown in FIG. 2 , and will not be described in detail here.

[0102] Step 302: Determine the maximum value P of the system frame number.

[0103] In some embodiments of the present disclosure, OTFS frames are marked with system frame numbers to distinguish different OTFS frames. For example, system frame numbers 0-7 are used to mark 8 OTFS frames that are currently transmitting data.

[0104] In some embodiments of the present disclosure, the maximum value P of the system frame number may be agreed upon by the protocol and is specifically related to the number of bits of the system counter.

[0105] For example, the OTFS frame is marked by the value of SFN (System Frame Number, cell system frame number counter). If the counter is 10 bits, the maximum value P of the system frame number is 1024.

[0106] Step 303: Based on the first parameter and P, determine the frame number p for sending and / or receiving the first reference signal. q .

[0107] In some embodiments of the present disclosure, the first reference signal is a front-loaded RS, or a conventional reference signal. The first reference signal is different from an additional reference signal (Additional RS). When the time-variability of the delay-Doppler domain channel is weak, sending and / or receiving the front-loaded RS can meet the estimation accuracy of the delay-Doppler domain channel. When the time-variability of the delay-Doppler domain channel is strong, only sending and / or receiving the front-loaded RS is not sufficient to meet the estimation accuracy of the delay-Doppler domain channel, and it is necessary to further send and / or receive the additional reference signal to meet the estimation accuracy of the delay-Doppler domain channel.

[0108] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; Δp, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0≤Δp <Q。

[0109] In some embodiments of the present disclosure, Q represents the reference signal transmission period, i.e., the interval between OTFS frames at which a reference signal is transmitted. Δp represents the frame number offset of the first reference signal transmitted. The frame number offset of the first reference signal transmitted is less than the reference signal transmission period. For example, if the reference signal transmission period is 10 and the frame number offset is not added, the frame number of the first reference signal transmitted is 0. If the frame number offset is 4, the frame number of the first reference signal transmitted is 4.

[0110] In some embodiments of the present disclosure, the first parameter includes a reference signal transmission period Q, and based on the first parameter and P, the frame number p for transmitting and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q and q. q .

[0111] In other words, when the network device is only configured with the reference signal transmission period Q, the frame number p for transmitting and / or receiving the first reference signal can be determined based on Q and P. q , the calculation formula is as follows:

[0112] Among them, P can represent the system frame number of any OTFS frame, p q The system frame number of the OTFS frame in which the first reference signal is transmitted and / or received is represented. q is determined based on Q and P.

[0113] For example, the system maximum frame number P is 99, the system frame number p range is defined as 0 to 99, the network device configures the reference signal sending period Q to 10, then the frame number of sending and / or receiving the first reference signal is [0, 10, 20, 30, 40, 50, 60, 70, 80, 90].

[0114] In some embodiments of the present disclosure, the first parameter includes a reference signal transmission period Q and a frame number offset Δp of the first reference signal transmitted in the first reference signal. Based on the first parameter and P, the frame number p of the first reference signal transmitted and / or received is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q, Δp and q. q .

[0115] In other words, when the network device configures the reference signal transmission period Q and the frame number offset Δp of the first reference signal sent first in the first reference signal, the frame number p of the first reference signal can be determined based on Q, Δp and q. q , the calculation formula is as follows:

[0116] For example, the maximum system frame number P is 99, the system frame number p is defined to range from 0 to 99, the reference signal transmission period Q is 10, and the reference signal initial offset Δp is 4. Based on the above definition, the frame numbers for sending and / or receiving the first reference signal are [4, 14, 24, 34, 44, 54, 64, 74, 84, 94].

[0117] Step 304: q A first reference signal is sent and / or received on the corresponding OTFS frame.

[0118] In some embodiments of the present disclosure, if the network device acts as a transmitting device, the method further includes: determining a first reference signal pattern; determining a scheduling unit used to send the first reference signal in the delay-Doppler domain; mapping the first reference signal to the scheduling unit based on the first reference signal sending position in the first reference signal pattern; and sending the first reference signal through the scheduling unit.

[0119] In some embodiments of the present disclosure, if the network device acts as a receiving device, the method further includes: receiving a first reference signal pattern indicated by a transmitting device, and mapping the signal pattern to a scheduling unit; receiving a signal sent by the transmitting device based on a scheduling unit in the delay-Doppler domain; and performing any one of channel estimation, demodulation, and beam measurement based on the signal.

[0120] In some embodiments of the present disclosure, a first reference signal pattern is used in an OTFS modulation system. The first reference signal pattern is agreed upon by a protocol. The first reference signal pattern can be determined based on the number of antenna ports and some configuration parameters. The first reference signal pattern can indicate information such as a first reference signal sending position and a data sending position. Optionally, in some embodiments, a guard interval is provided between the first reference signal sending position and the data sending position.

[0121] In some embodiments of the present disclosure, the first reference signal pattern is associated with the number of antenna ports, and the transmitting device or the receiving device may determine the first reference signal pattern based on the number of antenna ports required to send the first reference signal.

[0122] In some embodiments of the present disclosure, the number of antenna ports may be 1, 2, 4, 8, 12, 16, 24, or 32 supported by the NR system, or other values, which are not limited by the present disclosure.

[0123] In some embodiments of the present disclosure, the scheduling unit is specifically an OTFS frame. By configuring the first parameter, it can be determined on which OTFS frame the first reference signal is sent / received. Furthermore, according to the reference signal pattern, the first reference signal is mapped to the corresponding OTFS frame for transmission, or the reference signal is received on the corresponding OTFS frame. This method can be applicable to scenarios with one or more antenna ports.

[0124] In some embodiments, the scheduling unit is an OTFS frame. Assume that an OTFS frame has M OTFS symbols in the delay domain and N OTFS symbols in the Doppler domain. FIG4 provides a reference signal pattern that can be applied to a single antenna port. As shown in FIG4 , there is a guard interval between the reference signal transmission position and the data transmission position. The size of the reference signal pattern is M×N corresponding to the OTFS frame. The delay-Doppler domain coordinates of the reference signal transmission position are (l p , k p ).

[0125] Furthermore, since the time when the receiving end device receives the signal must be later than the time when the transmitting end transmits the signal, the delay value is always positive, which is manifested as a transmission data offset on the reference signal pattern. In order to prevent the data transmitted on the left side of the reference signal from being offset to the right side due to the delay, the range of the delay domain coordinate of the guard interval should be l p-l τ to l p +l τ Since the Doppler shift can be positive or negative, in order to prevent the overlap between the two reference signals caused by the Doppler shift, the range of the Doppler domain coordinates of the guard interval is k p -2k v to k p +2k v , where the guard interval value in the reference signal pattern at the transmitting end is set to 0, as shown in FIG4 , and the delay domain coordinates of the data transmission position range from 0 to l p -l τ -1 and l p +l τ +1 to M-1, the Doppler domain coordinates of the data transmission location range from 0 to k p -2k v -1 and k p +2k v +1 to N-1, where the position of the received reference signal on the pattern is the same as that of the transmitted reference signal, but since data may be sent offset during transmission, the value of the guard interval in the reference signal pattern may be 1.

[0126] In some embodiments, as shown in FIG5 , the first reference signal is mapped to a corresponding OTFS frame according to the position of the first reference signal in the first reference signal pattern. Gray frames in FIG5 represent frames for sending and / or receiving the first reference signal.

[0127] Furthermore, as shown in Figure 5, the frames in the delay-Doppler domain are aligned with the frames in the time-frequency domain. Assuming that an OTFS frame has M OTFS symbols in the delay domain and N OTFS symbols in the Doppler domain, where 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:

[0128] For a frame of size M×N in the delay-Doppler domain, the frame size in the time-frequency domain is N×M through the dual Fourier transform SFFT. Correspondingly, for a frame of size N×M in the time-frequency domain, the frame size in the delay-Doppler domain is M×N through the inverse dual Fourier transform ISFFT.

[0129] In summary, according to the communication method provided by the present disclosure, the method is performed by a network device, and the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, determining a maximum value P of a system frame number, and based on the first parameter and P, determining a frame number p for sending and / or receiving the first reference signal.q , on p q Send and / or receive a first reference signal on the corresponding OTFS frame. It is disclosed that according to the OTFS frame structure, the transmission position of the first reference signal is determined by configuring the first parameter, which can be applied to the transmission of reference signals in the OTFS system to match the time-delay Doppler channel change. In the scenario of time-delay Doppler channel change, the requirement for channel estimation of the time-delay Doppler domain channel is satisfied.

[0130] FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of the present disclosure, where the method is executed by a network device. As shown in FIG. 6, the communication method includes the following steps:

[0131] Step 401, determine a first parameter.

[0132] Wherein, the first parameter is used to indicate the configuration information of the reference signal transmitted and / or received in the orthogonal time-frequency-space (OTFS) modulation system.

[0133] In some embodiments of the present disclosure, the method further includes: sending the first parameter to a terminal. In some embodiments of the present disclosure, sending the first parameter to the terminal includes: sending a first signaling to the terminal, wherein the first signaling carries the first parameter.

[0134] Step 402, determine the maximum value P of the system frame number.

[0135] Step 403, based on the first parameter and P, determine the frame number p of the first reference signal to be transmitted and / or received q .

[0136] In some embodiments of the present disclosure, the first parameter includes: Q, the transmission period of the reference signal, and △Q, the offset of the frame number of the first transmitted reference signal of the second reference signal relative to the frame number of the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0137] In some embodiments of the present disclosure, based on the first parameter and P, determine the frame number p of the first reference signal to be transmitted and / or received q includes: determining a second parameter q based on Q and P; determining p based on Q and q q .

[0138] In some embodiments of the present disclosure, the first parameter includes: Q, the transmission period of the reference signal, △p, the offset of the frame number of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q, and △Q, the offset of the frame number of the first transmitted reference signal of the second reference signal relative to the frame number of the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0139] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for sending and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q, Δp and q. q .

[0140] Step 404: q A first reference signal is sent and / or received on the corresponding OTFS frame.

[0141] The detailed explanation of the above steps 401 to 404 can be referred to the description of steps 301 to 304 in the embodiment shown in FIG3 , which will not be repeated here.

[0142] Step 405: Based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a .

[0143] In some embodiments of the present disclosure, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the method also included: determining whether to configure a second reference signal.

[0144] In some embodiments of the present disclosure, the second reference signal is essentially the same as the first reference signal, and both can be reference signals such as DMRS, CSI-RS, PT-RS, SRS, etc. There is no restriction on the type of reference signal. The second reference signal has a different density from the first reference signal. The first reference signal can meet the required channel estimation performance with a lower overhead. When the first reference signal cannot meet the required channel estimation performance, adding the second reference signal can increase the reference signal density to meet the required channel estimation performance.

[0145] In some embodiments of the present disclosure, the second reference signal is an additional reference signal, which is different from the preamble reference signal. When the delay-Doppler domain channel has strong time-varying properties, only sending and / or receiving the preamble reference signal is not sufficient to meet the estimation accuracy of the delay-Doppler domain channel. It is necessary to further send and / or receive the additional reference signal to increase the reference signal density. The preamble reference signal and the additional reference signal are sent and / or received adjacent to each other to meet the estimation accuracy of the delay-Doppler domain channel.

[0146] In some embodiments of the present disclosure, the network device decides whether to configure the second reference signal, and the decision may be made with reference to the auxiliary information provided by the terminal. For example, the terminal provides one or more parameters to the network device, some of which can reflect the moving speed of the terminal. The network device infers whether the terminal is in a high-speed moving state based on these parameters. If the terminal is in a high-speed moving state, the current delay-Doppler domain channel changes rapidly, and it is necessary to send and / or receive a second reference signal to meet the estimation accuracy of the delay-Doppler domain channel.

[0147] In some embodiments of the present disclosure, △Q is the frame number offset of the reference signal first sent by the second reference signal relative to the frame number of the reference signal first sent by the first reference signal. For example, if the frame number of the reference signal first sent by the first reference signal is 0 and the parameter △Q configured by the network device is 5, then the frame number of the reference signal first sent by the second reference signal is 5.

[0148] In some embodiments of the present disclosure, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a The calculation formula is as follows: a =p q +△Q

[0149] In some embodiments of the present disclosure, ΔQ may represent a frame number offset of the first transmitted reference signal in the additional reference signal relative to the frame number offset of the first transmitted reference signal in the preamble reference signal, and ΔQ is less than a transmission period Q of the preamble reference signal.

[0150] In one embodiment, the system frame number p is defined to range from 0 to 99, that is, the maximum system frame number P is 99, the reference signal transmission period Q is 10, the reference signal initial offset Δp is 4, and ΔQ is 5. According to the above definition, the frame numbers for transmitting the reference signal are [4, 9, 14, 19, 24, 29, 34, 39, 44, 49, 54, 59, 64, 69, 74, 79, 84, 89, 94, 99].

[0151] In another embodiment, the system frame number p is defined to range from 0 to 99, that is, the maximum system frame number P is 99, the reference signal transmission period Q is 10, and ΔQ is 5. According to the above definition, the frame numbers for transmitting the reference signal are [0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95].

[0152] [Corrected 21.08.2025 according to Rule 91] In some embodiments of the present disclosure, the configuration of the additional reference signal needs to be distributed as evenly as possible on the delay-Doppler frame, and the frame number of the additional reference signal needs to be as early as possible, avoiding the last OTFS frame.

[0153] Step 406: a A second reference signal is sent and / or received on the corresponding OTFS frame.

[0154] In some embodiments of the present disclosure, if the network device acts as a transmitting device, the method further includes: determining a second reference signal pattern; determining a scheduling unit used to send the reference signal in the delay-Doppler domain; mapping the second reference signal to the scheduling unit based on the reference signal sending position in the second reference signal pattern; and sending the second reference signal through the scheduling unit.

[0155] In some embodiments of the present disclosure, if the network device acts as a receiving device, the method further includes: receiving a second reference signal pattern indicated by the transmitting device, and mapping the second reference signal pattern to a scheduling unit; receiving a signal sent by the transmitting device based on the scheduling unit in the delay-Doppler domain; and performing any one of channel estimation, demodulation, and beam measurement based on the signal.

[0156] In some embodiments of the present disclosure, a second reference signal pattern is used in an OTFS modulation system. The second reference signal pattern is agreed upon by a protocol. The second reference signal pattern can be determined based on the number of antenna ports and some configuration parameters. The second reference signal pattern can indicate information such as a second reference signal sending position and a data sending position. Optionally, in some embodiments, a guard interval is provided between the second reference signal sending position and the data sending position.

[0157] In some embodiments of the present disclosure, the second reference signal pattern is associated with the number of antenna ports, and the transmitting end device or the receiving end device may determine the second reference signal pattern based on the number of antenna ports required to send the second reference signal.

[0158] In some embodiments of the present disclosure, the number of antenna ports may be 1, 2, 4, 8, 12, 16, 24, or 32 supported by the NR system, or other values, which are not limited by the present disclosure.

[0159] In some embodiments of the present disclosure, the scheduling unit is specifically an OTFS frame. Through the above steps 401-405, it can be determined on which OTFS frame the second reference signal is sent / received. Furthermore, according to the second reference signal pattern, the second reference signal is mapped to the corresponding OTFS frame for transmission, or the reference signal is received on the corresponding OTFS frame. This method can be applicable to scenarios with one or more antenna ports.

[0160] In some embodiments, the scheduling unit is an OTFS frame. Assume that an OTFS frame has M OTFS symbols in the delay domain and N OTFS symbols in the Doppler domain. FIG4 provides a reference signal pattern that can be applied to a single antenna port. As shown in FIG4 , there is a guard interval between the reference signal transmission position and the data transmission position. The size of the reference signal pattern is M×N corresponding to the OTFS frame. The delay-Doppler domain coordinates of the reference signal transmission position are (l p , k p ).

[0161] Furthermore, since the time when the receiving end device receives the signal must be later than the time when the transmitting end transmits the signal, the delay value is always positive, which is manifested as a transmission data offset on the reference signal pattern. In order to prevent the data transmitted on the left side of the reference signal from being offset to the right side due to the delay, the range of the delay domain coordinate of the guard interval should be l p -l τ to l p +l τ Since the Doppler shift can be positive or negative, in order to prevent the overlap between the two reference signals caused by the Doppler shift, the range of the Doppler domain coordinates of the guard interval is k p -2k v to k p +2k v , where the guard interval value in the reference signal pattern at the transmitting end is set to 0, as shown in FIG4 , and the delay domain coordinates of the data transmission position range from 0 to l p -l τ -1 and l p +l τ +1 to M-1, the Doppler domain coordinates of the data transmission location range from 0 to k p -2k v -1 and k p +2k v +1 to N-1, where the position of the received reference signal on the pattern is the same as that of the transmitted reference signal, but since data may be sent offset during transmission, the value of the guard interval in the reference signal pattern may be 1.

[0162] In some embodiments, as shown in FIG7 , the second reference signal is mapped to a corresponding OTFS frame according to the position of the second reference signal in the second reference signal pattern, where black frames represent frames for sending and / or receiving the second reference signal.

[0163] Furthermore, as shown in Figure 7, the frames in the delay-Doppler domain are aligned with the frames in the time-frequency domain. Assuming that an OTFS frame has M OTFS symbols in the delay domain and N OTFS symbols in the Doppler domain, where 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:

[0164] For a frame of size M×N in the delay-Doppler domain, the frame size in the time-frequency domain is N×M through the dual Fourier transform SFFT. Correspondingly, for a frame of size N×M in the time-frequency domain, the frame size in the delay-Doppler domain is M×N through the inverse dual Fourier transform ISFFT.

[0165] In summary, according to the communication method provided by the present disclosure, the method is performed by a network device, and the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, determining a maximum value P of a system frame number, and based on the first parameter and P, determining a frame number p for sending and / or receiving the first reference signal. q , in p q The first reference signal is sent and / or received on the corresponding OTFS frame, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a , in p a The second reference signal is sent and / or received on the corresponding OTFS frame. Based on the OTFS frame structure, the present disclosure determines the transmission locations of the first reference signal and the second reference signal by configuring a first parameter. This can be applied to reference signal transmission in an OTFS system to match delay-Doppler channel variations. This meets the need for channel estimation in the delay-Doppler domain in scenarios where the delay-Doppler channel has severe time-variability.

[0166] FIG8 is a flow chart of a communication method provided by an embodiment of the present disclosure, wherein the method is executed by a terminal.

[0167] As shown in FIG8 , the method includes the following steps:

[0168] Step 501: Determine a first parameter.

[0169] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0170] In the embodiment of the present disclosure, the terminal can be a transmitter device of the reference signal or a receiver device of the reference signal, and the present disclosure does not limit this. In the embodiment of the present disclosure, the first parameter can be one or more parameters, and the first parameter is configured by the network device.

[0171] In the embodiments of the present disclosure, there is no restriction on the type of reference signal, which may be, for example, a reference signal for channel estimation, a reference signal for signal demodulation, and a reference signal for beam measurement, etc. Specifically, the reference signal includes but is not limited to DMRS (Demodulation Reference Signal), CSI-RS (Channel State Information Reference Signal), PT-RS (Phase-tracking reference signals), SRS (Sounding Reference Signal), etc.

[0172] In some embodiments of the present disclosure, if the terminal serves as a receiving device of a reference signal, the first parameter is used to indicate the configuration information of the terminal receiving the reference signal under the OTFS modulation system, and the configuration information indicated by the first parameter is used to configure a downlink reference signal such as SRS. If the terminal serves as a sending device of a reference signal, the first parameter is used to indicate the configuration information of the terminal sending the reference signal under the OTFS modulation system, and the configuration information indicated by the first parameter is used to configure an uplink reference signal such as DMRS.

[0173] In some embodiments of the present disclosure, data mapping of the OTFS modulation system is completed in the delay-Doppler domain. The data passes through the delay-Doppler domain channel. If the device receiving the data wants to demodulate the data, it is necessary to perform channel estimation on the delay-Doppler domain channel. The delay-Doppler channel changes with the movement of the terminal. Therefore, a reference signal is inserted into different OTFS frames to match the delay-Doppler channel changes.

[0174] In some embodiments of the present disclosure, determining the first parameter includes: receiving the first parameter sent by a network device.

[0175] In some embodiments of the present disclosure, the method further includes: determining a frame number for sending and / or receiving a reference signal based on the first parameter; and sending and / or receiving the reference signal on an OTFS frame corresponding to the frame number.

[0176] In some embodiments of the present disclosure, the terminal determines a first parameter, and based on the first parameter, determines a frame number for sending and / or receiving a reference signal, wherein the first parameter most recently sent by the network device can be used, and before the network device sends a new first parameter, the frame number for sending and / or receiving the reference signal can be determined based on the first parameter last sent, and the reference signal is sent and / or received on the OTFS frame corresponding to the frame number.

[0177] In other words, based on the first parameter, it can be determined in which OTFS frames the reference signal is transmitted and / or received, that is, in which OTFS frames the reference signal is inserted.

[0178] In some embodiments of the present disclosure, the density of sending and / or receiving reference signals is related to the speed of the delay-Doppler domain channel change. The density of sending and / or receiving reference signals can be controlled by adjusting the first parameter. For example, if the delay-Doppler domain changes rapidly, the density of the reference signal needs to be increased. The first parameter configuration is used to send and / or receive reference signals on more OTFS frames.

[0179] In some embodiments of the present disclosure, receiving the first parameter sent by the network device includes: receiving first signaling sent by the network device, where the first signaling carries the first parameter.

[0180] In some embodiments of the present disclosure, the first signaling may be RRC or MAC CE or DCI signaling, or other downlink signaling, which is not limited by the present disclosure.

[0181] In some embodiments of the present disclosure, if the terminal acts as a transmitting device, the method further includes: determining a reference signal pattern; determining a scheduling unit used to send a reference signal in the delay-Doppler domain; mapping the reference signal to the scheduling unit based on the reference signal sending position in the reference signal pattern; and sending the reference signal through the scheduling unit.

[0182] In some embodiments of the present disclosure, if the terminal acts as a receiving device, the method further includes: receiving a reference signal pattern indicated by a transmitting device, and mapping the signal pattern to a scheduling unit; receiving a signal sent by the transmitting device based on a scheduling unit in the delay-Doppler domain; and performing any one of channel estimation, demodulation, and beam measurement based on the signal.

[0183] In some embodiments of the present disclosure, a reference signal pattern is used in an OTFS modulation system. The reference signal pattern is agreed upon by a protocol. The reference signal pattern can be determined based on the number of antenna ports and some configuration parameters. The reference signal pattern can indicate information such as a reference signal sending position and a data sending position. Optionally, in some embodiments, a guard interval is provided between the reference signal sending position and the data sending position.

[0184] In some embodiments of the present disclosure, different antenna ports use the same reference signal pattern, and different antenna ports correspond to different reference signal sequences. The reference signal sequences are mapped to the scheduling unit for transmission to ensure orthogonality of the reference signal transmission.

[0185] In some embodiments of the present disclosure, the reference signal pattern is associated with the number of antenna ports, and different antenna ports correspond to different reference signal patterns. The transmitting device or the receiving device can determine the reference signal pattern based on the number of antenna ports required to send the reference signal.

[0186] In some embodiments of the present disclosure, there is no restriction on the relationship between reference signals and reference signal patterns, and the relationship may be, for example, one-to-one or many-to-one; that is, each reference signal may uniquely correspond to a reference signal pattern, and a corresponding reference signal may be transmitted using a specific reference signal pattern. Alternatively, multiple reference signals may correspond to one reference signal pattern, respectively, and multiple reference signals may be transmitted using the same reference signal pattern.

[0187] In some embodiments of the present disclosure, the scheduling unit is specifically an OTFS frame. By configuring the first parameter, it can be determined on which OTFS frame the reference signal is sent / received. Furthermore, according to the reference signal pattern, the reference signal is mapped to the corresponding OTFS frame for transmission, or the reference signal is received on the corresponding OTFS frame. This method can be applicable to scenarios with one or more antenna ports.

[0188] In summary, according to the communication method provided by the present disclosure, which is executed by a terminal, the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, and determining the sending position of the reference signal by obtaining the parameters configured by the network device. This can be applied to the reference signal sending in the OTFS system to match the delay-Doppler channel changes.

[0189] FIG9 is a flow chart of a communication method provided in an embodiment of the present disclosure, wherein the method is executed by a terminal. Based on the above-mentioned embodiment, the communication method further includes the following steps:

[0190] Step 601: Determine a first parameter.

[0191] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0192] In some embodiments of the present disclosure, determining the first parameter includes: receiving the first parameter sent by a network device.

[0193] In some embodiments of the present disclosure, receiving the first parameter sent by the network device includes: receiving first signaling sent by the network device, where the first signaling carries the first parameter.

[0194] The specific implementation of the above step 601 can refer to step 501 in the embodiment shown in FIG8 , and will not be repeated here.

[0195] Step 602: Determine the maximum value P of the system frame number.

[0196] Step 603: Based on the first parameter and P, determine the frame number p for sending and / or receiving the first reference signal. q .

[0197] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; Δp, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0≤Δp <Q。

[0198] In some embodiments of the present disclosure, the first parameter includes a reference signal transmission period Q, and based on the first parameter and P, the frame number p for transmitting and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q and q. q .

[0199] In some embodiments of the present disclosure, the first parameter includes a reference signal transmission period Q and a frame number offset Δp of the first reference signal transmitted in the first reference signal. Based on the first parameter and P, the frame number p of the first reference signal transmitted and / or received is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q, Δp and q. q .

[0200] Step 604: q A first reference signal is sent and / or received on the corresponding OTFS frame.

[0201] It is understandable that the terminal can be used as a transmitting end device of the first reference signal, or as a receiving end device of the first reference signal, and determines the frame number p of the first reference signal. q The method, as well as the q The method for sending and / or receiving the first reference signal on the corresponding OTFS frame is similar to the embodiment on the network device side shown in FIG. 3 .

[0202] The specific implementation of the above steps 602-604 can refer to steps 302-304 in the embodiment shown in FIG3 , and will not be repeated here.

[0203] In some embodiments of the present disclosure, the network device may send a signal based on a scheduling unit.

[0204] In summary, according to the communication method provided by the present disclosure, wherein the method is performed by a terminal, the method includes: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, determining a maximum value P of a system frame number, and based on the first parameter and P, determining a frame number p for sending and / or receiving the first reference signal. q , in p q The first reference signal is sent and / or received on the corresponding OTFS frame. The present disclosure determines the first reference signal sending location by obtaining a first parameter configured on a network device. This can be applied to reference signal transmission in an OTFS system to match delay-Doppler channel variations, thereby meeting the need for channel estimation for delay-Doppler domain channels in scenarios where the delay-Doppler channel varies.

[0205] FIG10 is a flow chart of a communication method provided in an embodiment of the present disclosure, wherein the method is executed by a terminal. Based on the above-mentioned embodiment, the communication method further includes the following steps:

[0206] Step 701: Determine a first parameter.

[0207] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0208] In some embodiments of the present disclosure, determining the first parameter includes: receiving the first parameter sent by a network device.

[0209] In some embodiments of the present disclosure, receiving the first parameter sent by the network device includes: receiving first signaling sent by the network device, where the first signaling carries the first parameter.

[0210] The specific implementation of the above step 701 can refer to step 501 in the embodiment shown in Figure 8, and will not be repeated here.

[0211] Step 702: Determine the maximum value P of the system frame number.

[0212] Step 703: Based on the first parameter and P, determine the frame number p for sending and / or receiving the first reference signal. q .

[0213] In some embodiments of the present disclosure, the first parameter includes: Q, the transmission period of the reference signal and ΔQ, the offset of the frame number of the first reference signal transmitted by the second reference signal relative to the frame number of the first reference signal transmitted by the first reference signal, where 0≤ΔQ <Q。

[0214] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for transmitting and / or receiving the first reference signal is determined. q It includes: determining the second parameter q based on Q and P; determining p based on Q and q. q .

[0215] In some embodiments of the present disclosure, the first parameter includes: Q, the transmission period of the reference signal, △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q, △Q, the frame number offset of the first transmitted reference signal of the second reference signal relative to the frame number of the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0216] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for transmitting and / or receiving the first reference signal is determined. q It includes: determining the second parameter q based on Q and P; determining p based on Q, △p and q. q .

[0217] Step 704, transmit and / or receive the first reference signal on the OTFS frame corresponding to p. q

[0218] It can be understood that the terminal can be the transmitting device of the first reference signal or the receiving device of the first reference signal, and the method for determining the frame number p of the first reference signal, and the method for transmitting and / or receiving the first reference signal on the OTFS frame corresponding to p are similar to the embodiment on the network device side shown in FIG. 3. q of, and q the method for transmitting and / or receiving the first reference signal on the OTFS frame corresponding to p are similar to the embodiment on the network device side shown in FIG. 3.

[0219] For the specific implementation of the above steps 702 - 704, reference can be made to steps 302 - 304 in the embodiment shown in FIG. 3, which will not be elaborated here.

[0220] Step 705, determine the frame number p for transmitting and / or receiving the second reference signal based on p q and △Q. a .

[0221] In some embodiments of the present disclosure, before determining the frame number p for transmitting and / or receiving the second reference signal based on p q and △Q, the method further includes: receiving the first information sent by the network device, where the first information is used to indicate whether the second reference signal is configured. a

[0222] Step 706, transmit and / or receive the second reference signal on the OTFS frame corresponding to p. a

[0223] ​​​It is understandable that the terminal can be used as a transmitting end device of the second reference signal, or as a receiving end device of the second reference signal, and determines the frame number p of the second reference signal. a The method, as well as the a The method for sending and / or receiving the second reference signal on the corresponding OTFS frame is similar to the embodiment on the network device side shown in FIG. 4 .

[0224] The specific implementation of the above steps 705 and 706 can refer to steps 405 and 406 in the embodiment shown in FIG6 , and will not be repeated here.

[0225] In summary, according to the communication method provided by the present disclosure, the method is performed by a terminal, including: determining a first parameter, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received under an orthogonal time-frequency-space (OTFS) modulation system, determining a maximum value P of a system frame number, and determining a frame number p for sending and / or receiving the first reference signal based on the first parameter and P. q , in p q The first reference signal is sent and / or received on the corresponding OTFS frame, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a , in p a The present disclosure obtains a first parameter configured on a network device and determines the transmission locations of the first reference signal and the second reference signal based on the first parameter. This can be applied to reference signal transmission in an OTFS system to match delay-Doppler channel variations. This meets the need for channel estimation for delay-Doppler domain channels in scenarios where the delay-Doppler channel has severe time-variability.

[0226] Figure 11 provides a flow chart of a communication interaction method. As shown in Figure 11, the interaction method may include the following steps:

[0227] Step 801: The network device sends a first parameter to the terminal.

[0228] The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0229] In some embodiments of the present disclosure, the network device sending the first parameter to the terminal includes: the network device sending first signaling to the terminal, where the first signaling carries the first parameter.

[0230] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q; △Q, the frame number offset of the first transmitted reference signal of the second reference signal relative to the frame number of the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0231] In some embodiments of the present disclosure, it further includes: The network device determines the frame number for transmitting and / or receiving the reference signal based on the first parameter; and transmits and / or receives the reference signal on the OTFS frame corresponding to the frame number.

[0232] In some embodiments of the present disclosure, it further includes: The terminal determines the frame number for transmitting and / or receiving the reference signal based on the first parameter; and transmits and / or receives the reference signal on the OTFS frame corresponding to the frame number.

[0233] It should be noted that both the terminal and the network device can be the transmitting end device or the receiving end device of the reference signal, and the subject of the following embodiments can be the terminal or the network device.

[0234] In some embodiments of the present disclosure, determining the frame number for transmitting and / or receiving the reference signal based on the first parameter includes: determining the maximum value P of the system frame number; and determining the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P. q ; where, transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: transmitting and / or receiving the first reference signal on the OTFS frame corresponding to p. q corresponding to the OTFS frame.

[0235] In some embodiments of the present disclosure, determining the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P. q includes: determining the second parameter q based on Q and P; and determining p based on Q and q. q .

[0236] In some embodiments of the present disclosure, determining the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P. q includes: determining the second parameter q based on Q and P; and determining p based on Q, △p, and q. q .

[0237] In some embodiments of the present disclosure, determining the frame number for transmitting and / or receiving the reference signal based on the first parameter includes: based on p. q and △Q, determining the frame number p for transmitting and / or receiving the second reference signal. a ; where, transmitting and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: on p. aA second reference signal is sent and / or received on the corresponding OTFS frame.

[0238] In some embodiments of the present disclosure, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the method also included: determining whether to configure a second reference signal.

[0239] The specific explanation of the above embodiment can refer to the relevant description of the embodiment shown in Figures 2-10 above, and will not be repeated here.

[0240] In summary, according to the communication method provided by the present disclosure, through interaction between a network device and a terminal, the network device determines a reference signal pattern, wherein the reference signal pattern is used in an orthogonal time-frequency-space (OTFS) modulation system, and a protection interval is provided between the reference signal transmission position and the data transmission position in the reference signal pattern; the network device sends the reference signal pattern to the terminal. The solution disclosed in the present disclosure configures a first parameter through a network device according to the OTFS frame structure, and sends the first parameter to the terminal. The network device and the terminal can determine the transmission position of the reference signal based on the first parameter, which is applied to the reference signal transmission in the OTFS system. In the scenario where the delay-Doppler channel changes, the requirement for channel estimation of the delay-Doppler domain channel is met.

[0241] FIG12 is a schematic structural diagram of a communication device 900 provided in an embodiment of the disclosure.

[0242] As shown in FIG12 , the communication device 900 includes a transceiver module 910 configured to send a first parameter to a terminal, wherein the first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0243] In summary, according to the communication device provided in the present disclosure, a first parameter is sent to the terminal through the communication device, wherein the first parameter is used to indicate the configuration information of the reference signal sent and / or received under the orthogonal time-frequency-space OTFS modulation system, and the sending position of the reference signal is determined by the configured first parameter, which can be applied to the reference signal transmission in the OTFS system to match the delay-Doppler channel change.

[0244] In some embodiments of the present disclosure, as shown in FIG13 , the apparatus 900 further includes a determination module 920, which is configured to determine, based on a first parameter, a frame number for sending and / or receiving a reference signal, and the transceiver module 910 is configured to send and / or receive the reference signal on an OTFS frame corresponding to the frame number.

[0245] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0 ≤ △p < Q; △Q, the frame number offset of the first transmitted reference signal of the second reference signal relative to the first transmitted reference signal of the first reference signal, where 0 ≤ △Q < Q.

[0246] In some embodiments of the present disclosure, the determining module 920 is specifically configured to: determine the maximum value P of the system frame number; determine the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P q , and the transceiver module 910 is specifically configured to: at p q corresponding OTFS frame to transmit and / or receive the first reference signal.

[0247] In some embodiments of the present disclosure, determining the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P q includes: determining a second parameter q based on Q and P; determining p based on Q and q q .

[0248] In some embodiments of the present disclosure, determining the frame number p for transmitting and / or receiving the first reference signal based on the first parameter and P q includes: determining a second parameter q based on Q and P; determining p based on Q, △p and q q .

[0249] In some embodiments of the present disclosure, the determining module 920 is further configured to: based on p q and △Q, determine the frame number p for transmitting and / or receiving the second reference signal a , and the transceiver module 910 is further configured to: at p a corresponding OTFS frame to transmit and / or receive the second reference signal.

[0250] In some embodiments of the present disclosure, before determining the frame number p for transmitting and / or receiving the second reference signal based on p q and △Q, the determining module 920 is further configured to: determine whether the second reference signal is configured. a

[0251] In some embodiments of the present disclosure, sending the first parameter to the terminal includes: sending a first signaling to the terminal, where the first signaling carries the first parameter.

[0252] ​In summary, according to the communication device provided by the present disclosure, through the transceiver module and the determination module, according to the OTFS frame structure, by configuring the first parameter to determine the transmission position of the first reference signal, it can be applied to the reference signal transmission in the OTFS system to match the time delay-Doppler channel change, and in the scenario of time delay-Doppler channel change, it meets the requirement of channel estimation for the time delay-Doppler domain channel.

[0253] FIG. 14 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present disclosure.

[0254] As shown in FIG. 14, the communication device 1000 includes a transceiver module 1010, configured to receive a first parameter sent by a network device, where the first parameter is used to indicate configuration information of a reference signal transmitted and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

[0255] In summary, according to the communication device provided by the present disclosure, through the transceiver module, receiving the first parameter configured by the network device and determining the transmission position of the reference signal, it can be applied to the reference signal transmission in the OTFS system to match the time delay-Doppler channel change.

[0256] In some embodiments of the present disclosure, as shown in FIG. 15, the device 还包括确定模块1020,确定模块用于:基于第一参数,确定发送和 / 或接收参考信号的帧号,收发模块1010用于:在帧号对应的OTFS帧上发送和 / 或接收参考信号。

[0257] In some embodiments of the present disclosure, the first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first transmitted first reference signal in the first reference signal, where 0≤△p<Q; △Q, the frame number offset of the first transmitted reference signal of the second reference signal relative to the frame number of the first transmitted reference signal of the first reference signal, where 0≤△Q<Q.

[0258] In some embodiments of the present disclosure, the determination module 1020 is specifically configured to: determine the maximum value P of the system frame number; based on the first parameter and P, determine the frame number p of transmitting and / or receiving the first reference signal q , and the transceiver module 1010 is specifically configured to: transmit and / or receive the first reference signal on the OTFS frame corresponding to p q .

[0259] In some embodiments of the present disclosure, based on the first parameter and P, determining the frame number p of transmitting and / or receiving the first reference signal q includes: based on Q and P, determining a second parameter q; based on Q and q, determining p q .

[0260] In some embodiments of the present disclosure, based on the first parameter and P, the frame number p for sending and / or receiving the first reference signal is determined. q The method includes: determining a second parameter q based on Q and P; determining p based on Q, Δp and q. q .

[0261] In some embodiments of the present disclosure, the determination module 1020 is further configured to: q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a The transceiver module 1010 is also used to: a A second reference signal is sent and / or received on the corresponding OTFS frame.

[0262] In some embodiments of the present disclosure, based on p q and ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the transceiver module 1010 was also used to: receive first information sent by the network device, wherein the first information is used to indicate whether to configure the second reference signal.

[0263] In some embodiments of the present disclosure, receiving the first parameter sent by the network device includes: receiving first signaling sent by the network device, where the first signaling carries the first parameter.

[0264] In summary, according to the communication device provided by the present disclosure, the first parameter of the network device configuration is obtained through the transceiver module and the determination module. Based on the first parameter, the first reference signal and the second reference signal are sent respectively. This can be applied to the reference signal transmission in the OTFS system to match the delay-Doppler channel change. In the scenario where the delay-Doppler channel changes, the need for channel estimation of the delay-Doppler domain channel is met.

[0265] Please refer to Figure 16, which is a schematic diagram of the structure of a communication device 1100 provided in an embodiment of the present application. Communication device 1100 can be a network device or a terminal device, or a chip, chip system, or processor that supports a network device to implement the above-mentioned method, or a chip, chip system, or processor that supports a terminal device to implement the above-mentioned method. This device can be used to implement the method described in the above-mentioned method embodiment, and details can be found in the description of the above-mentioned method embodiment.

[0266] The communication device 1100 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0267] Optionally, the communication device 1100 may further include one or more memories 1102, on which a computer program 1104 may be stored. The processor 1101 executes the computer program 1104 to cause the communication device 1100 to perform the method described in the above method embodiment. Optionally, the memory 1102 may also store data. The communication device 1100 and the memory 1102 may be provided separately or integrated together.

[0268] Optionally, the communication device 1100 may further include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. The transceiver 1105 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0269] Optionally, the communication device 1100 may further include one or more interface circuits 1107. The interface circuit 1107 is configured to receive code instructions and transmit the instructions to the processor 1101. The processor 1101 executes the code instructions to enable the communication device 1100 to perform the method described in the above method embodiment.

[0270] In one implementation, processor 1101 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0271] In one implementation, processor 1101 may store a computer program 1103. Computer program 1103, when executed on processor 1101, enables communication device 1100 to perform the method described in the above method embodiment. Computer program 1103 may be embedded in processor 1101, in which case processor 1101 may be implemented by hardware.

[0272] In one implementation, the communication device 1100 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0273] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to FIG16. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0274] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0275] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0276] (3) ASIC, such as modem;

[0277] (4) Modules that can be embedded in other devices;

[0278] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0279] (6)Others, etc.

[0280] If the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 17. The chip shown in Figure 17 includes a processor 1201 and an interface 1202. The number of processors 1201 can be one or more, and the number of interfaces 1202 can be multiple.

[0281] Optionally, the chip further includes a memory 1203, which is used to store necessary computer programs and data.

[0282] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0283] The present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0284] Figure 18 is a structural diagram of a communication system provided by an embodiment of the present disclosure. As shown in Figure 18, the communication system includes: a network device and a terminal, wherein the network device is used to execute the methods shown in Figures 2 to 7 above, and the terminal is used to execute the methods shown in Figures 8 to 10 above.

[0285] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0286] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application, and also indicate the order of precedence.

[0287] In this application, at least one can also be described as one or more, and multiple can be two, three, four or more, which is not limited in this application. In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0288] The correspondences shown in the tables in this application can be configured or predefined. The values ​​of the information in each table are examples only and can be configured to other values, which are not limited by this application. When configuring the correspondence between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables in this application, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also use other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0289] The predefined in this application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0290] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0291] 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.

[0292] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method is performed by a network device, and includes: Determine the first parameter, The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

2. The method according to claim 1, characterized in that The method further comprises: Send the first parameter to the terminal.

3. The method according to claim 1 or 2, characterized in that The method further comprises: determining, based on the first parameter, a frame number for sending and / or receiving the reference signal; The reference signal is sent and / or received on an OTFS frame corresponding to the frame number.

4. The method according to any one of claims 1 to 3, characterized in that The first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first reference signal sent first in the first reference signal, where 0≤△p <Q; △Q, the frame number offset of the second reference signal relative to the first reference signal, where 0≤△Q <Q。 5. The method according to claim 4, characterized in that The determining, based on the first parameter, a frame number for sending and / or receiving the reference signal includes: Determine the maximum value P of the system frame number; Based on the first parameter and P, determine the frame number p for sending and / or receiving the first reference signal q ; The sending and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: In the p q The first reference signal is sent and / or received on the corresponding OTFS frame.

6. The method according to claim 5, characterized in that The determining of the frame number p for sending and / or receiving the first reference signal based on the first parameter and the P q include: Determine a second parameter q based on the Q and the P; Based on the Q and the q, determine the p q .

7. The method according to claim 5, characterized in that The determining of the frame number p for sending and / or receiving the first reference signal based on the first parameter and the P q include: Determine a second parameter q based on the Q and the P; Based on the Q, the Δp and the q, the p is determined q .

8. The method according to any one of claims 4 to 7, characterized in that The determining, based on the first parameter, a frame number for sending and / or receiving the reference signal includes: Based on the p q and the ΔQ, determining the frame number p for sending and / or receiving the second reference signal a ; The sending and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: In the p a The second reference signal is sent and / or received on the corresponding OTFS frame.

9. The method according to claim 8, characterized in that Based on the p q and the ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the method also included: Determine whether to configure the second reference signal.

10. The method according to any one of claims 2 to 9, characterized in that The sending the first parameter to the terminal includes: Sending first signaling to the terminal, where the first signaling carries the first parameter.

11. A communication method, characterized in that: The method is executed by a terminal, and includes: Determine the first parameter, The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

12. The method according to claim 10, characterized in that Determining the first parameter includes: A first parameter sent by a network device is received.

13. The method according to claim 11 or 12, characterized in that The method further comprises: determining, based on the first parameter, a frame number for sending and / or receiving the reference signal; The reference signal is sent and / or received on an OTFS frame corresponding to the frame number.

14. The method according to any one of claims 11 to 13, characterized in that The first parameter includes at least one of the following: Q, the transmission period of the reference signal; △p, the frame number offset of the first reference signal sent first in the first reference signal, where 0≤△p <Q; △Q, the frame number offset of the second reference signal relative to the first reference signal, where 0≤△Q <Q。 15. The method according to claim 14, characterized in that The determining, based on the first parameter, a frame number for sending and / or receiving the reference signal includes: Determine the maximum value P of the system frame number; Based on the first parameter and P, determine the frame number p for sending and / or receiving the first reference signal q ; The sending and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: In the p q The first reference signal is sent and / or received on the corresponding OTFS frame.

16. The method according to claim 15, characterized in that The determining of the frame number p for sending and / or receiving the first reference signal based on the first parameter and the P q include: Determine a second parameter q based on the Q and the P; Based on the Q and the q, determine the p q .

17. The method according to claim 15, characterized in that The determining of the frame number p for sending and / or receiving the first reference signal based on the first parameter and P q include: Determine a second parameter q based on the Q and the P; Based on the Q, the Δp and the q, the p is determined q .

18. The method according to any one of claims 14 to 17, characterized in that The determining, based on the first parameter, a frame number for sending and / or receiving the reference signal includes: Based on the p q and the ΔQ, determining the frame number p for sending and / or receiving the second reference signal a ; The sending and / or receiving the reference signal on the OTFS frame corresponding to the frame number includes: In the p a The second reference signal is sent and / or received on the corresponding OTFS frame.

19. The method according to claim 18, characterized in that Based on the p q and the ΔQ, determining the frame number p for sending and / or receiving the second reference signal a Previously, the method also included: receiving first information sent by the network device, The first information is used to indicate whether the second reference signal is configured.

20. The method according to any one of claims 11 to 19, characterized in that The receiving a first parameter sent by the network device includes: Receive first signaling sent by the network device, where the first signaling carries the first parameter.

21. A communication device, characterized in that: The apparatus comprises a determining module, configured to: Determine the first parameter, The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

22. A communication device, characterized in that: The apparatus comprises a determining module, configured to: Determine the first parameter, The first parameter is used to indicate configuration information of a reference signal sent and / or received in an orthogonal time-frequency-space (OTFS) modulation system.

23. A communication device, wherein: include: transceiver; Memory; A processor is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method described in any one of claims 1 to 20.

24. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method according to any one of claims 1 to 20 can be implemented.

25. A communication system, characterized in that: include: A network device and a terminal, wherein the network device is configured to execute the method according to any one of claims 1 to 10; The terminal is configured to execute the method according to any one of claims 11 to 20.

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