Processing method, communication device and storage medium

Abstract

The invention discloses a processing method, communication equipment and a storage medium, and the method comprises the steps: selecting or determining cyclic prefix extension based on a preset parameter, generating an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, carrying out the communication based on the orthogonal frequency division multiplexing symbol, generating the orthogonal frequency division multiplexing symbol according to the cyclic prefix extension, and carrying out the communication based on the orthogonal frequency division multiplexing symbol. And the generated orthogonal frequency division multiplexing symbols are used for sidelink transmission, so that the channel occupation time can be reserved, and the probability of preempting the unlicensed spectrum in the sidelink transmission process can be improved.

Description

Processing method, communication device and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a processing method, communication equipment, and storage medium. Background Art

[0002] In sidelink transmissions, there is typically a gap symbol at the end of the subframe structure for Tx / Rx switching (and switching to UL transmission via the TA when the UE RRC accesses the network). Additionally, a gap symbol exists when the transmitting terminal shares the COT (Channel Occupancy Time) with the receiving terminal for PSFCH transmission. For the 15kHz or 30kHz subcarrier spacing supported in FR1, the symbol length is always greater than 25μs.

[0003] During the process of conceiving and implementing this application, the inventors discovered that there are at least the following problems: if the interval between two transmissions in the unlicensed spectrum is greater than 25μs, the latter transmission cannot share the COT used by the previous transmission, that is, the latter transmission needs to use Type 1 Channel access, thereby reducing the probability of the latter transmission preempting the unlicensed spectrum.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0005] The main purpose of this application is to provide a processing method, a communication device and a storage medium, aiming to increase the probability of seizing unlicensed spectrum during side link transmission.

[0006] To achieve the above objectives, the present application provides a processing method that can be applied to a terminal device (such as a mobile phone), comprising the following steps:

[0007] S1: Select or determine a cyclic prefix extension based on preset parameters, generate an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and communicate based on the orthogonal frequency division multiplexing symbol.

[0008] Optionally, the preset parameters include at least one of the following: number of symbols, timing advance, propagation delay, and interval value.

[0009] Optionally, before step S1, the method further includes: selecting or determining at least one of the following: number of symbols, timing advance, propagation delay, and interval value.

[0010] Optionally, the method of selecting or determining the number of symbols includes at least one of the following:

[0011] selecting or determining the number of symbols based on sidelink control information;

[0012] Selecting or determining the number of symbols based on downlink control information;

[0013] Selecting or determining the number of symbols based on the public side link control information;

[0014] The number of symbols is selected or determined based on the current side link partial bandwidth and / or the subcarrier spacing of the side link resource pool.

[0015] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions, and a method of selecting or determining the timing advance includes at least one of the following:

[0016] Selecting or determining the first timing advance based on at least one of sidelink radio resource control signaling, a medium access control information unit, and sidelink control information sent by the first terminal;

[0017] Selecting or determining the first timing advance and / or the second timing advance based on a medium access control information unit sent by a network device (such as a base station);

[0018] The second timing advance is selected or determined based on a random access response message sent by a network device (such as a base station).

[0019] Optionally, the method of selecting or determining the propagation delay includes at least one of the following:

[0020] Selecting or determining the propagation delay based on radio resource control signaling;

[0021] Selecting or determining the propagation delay based on a preset fixed value;

[0022] The propagation delay is selected or determined based on the first signal.

[0023] Optionally, the step of selecting or determining the interval value includes at least one of the following:

[0024] Selecting or determining the interval value based on sidelink control information;

[0025] Selecting or determining the interval value based on downlink control information;

[0026] The interval value is selected or determined based on a preset configuration.

[0027] This application also provides a processing method that can be applied to a terminal device (such as a mobile phone), comprising the following steps:

[0028] S10: Send a first message, where the first message is used to select or determine a first parameter, and the first parameter is used to select or determine a cyclic prefix extension.

[0029] Optionally, the first message includes at least one of the following: side link control information, common side link control information, side link radio resource control signaling, side link medium access control information unit; and / or, the first parameter includes at least one of the following: number of symbols, first timing advance, interval value.

[0030] Optionally, the method further comprises the following steps:

[0031] A first signal is sent, where the first signal is used to select or determine a propagation delay.

[0032] Optionally, the method further comprises the following steps:

[0033] A first signal is sent, where the first signal is used to select or determine a propagation delay.

[0034] Optionally, before step S10, the following steps are further included:

[0035] The first message is selected or determined based on the second message.

[0036] The present application also provides a processing method, which can be applied to a network device (such as a base station), comprising the following steps:

[0037] A10: Send a second message, where the second message is used to select or determine a second parameter, and the second parameter is used to select or determine a cyclic prefix extension.

[0038] Optionally, the second message includes at least one of the following: downlink control information, medium access control information unit, random access response message; and / or the second parameter includes at least one of the following: number of symbols, timing advance, interval value.

[0039] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions.

[0040] The present application also provides a communication device, comprising: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of any of the above-described processing methods when executed by the processor.

[0041] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0042] The present application also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-described processing methods are implemented.

[0043] The present application selects or determines a cyclic prefix extension based on preset parameters, generates an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, communicates based on the orthogonal frequency division multiplexing symbol, generates an orthogonal frequency division multiplexing symbol according to the cyclic prefix extension, and uses the generated orthogonal frequency division multiplexing symbol for side link transmission, which helps to preserve channel occupancy time and can increase the probability of seizing unlicensed spectrum during side link transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0045] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0046] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0047] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0048] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0049] FIG5 is a schematic flow chart of a processing method according to the first embodiment;

[0050] FIG6 is a first principle schematic diagram of a processing method according to the first embodiment;

[0051] FIG7 is a second schematic diagram illustrating the processing method according to the first embodiment;

[0052] FIG8 is a schematic flow chart of a processing method according to a second embodiment;

[0053] FIG9 is a schematic flow chart of a processing method according to a third embodiment;

[0054] FIG10 is a schematic flow chart of a processing method according to a fourth embodiment;

[0055] FIG11 is a schematic flow chart of a processing method according to a fifth embodiment;

[0056] FIG12 is a schematic diagram showing a first principle of a processing method according to a seventh embodiment;

[0057] FIG13 is a second schematic diagram of a processing method according to a seventh embodiment;

[0058] FIG14 is a first structural diagram of a processing device provided in an embodiment of the present application;

[0059] FIG15 is a second structural diagram of a processing device provided in an embodiment of the present application;

[0060] FIG16 is a third structural diagram of a processing device provided in an embodiment of the present application;

[0061] FIG17 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0062] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments.

[0063] Implementation Methods of the Application

[0064] 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 embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0065] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0066] It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0067] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0068] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0069] It should be noted that in this article, step codes such as S0 and S1 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial restriction on the order. When implementing the step, those skilled in the art may execute S1 first and then S0, etc., but these should all be within the scope of protection of this application.

[0070] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0071] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0072] The terminal device may be implemented in various forms. For example, the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and other fixed terminal devices such as digital TVs and desktop computers.

[0073] The subsequent description will be made using a mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the structure according to the embodiments of the present application can also be applied to fixed-type terminal devices.

[0074] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown, or may combine certain components, or arrange the components differently.

[0075] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0076] The RF unit 101 can be used to send and receive information or receive signals during calls. Specifically, it receives downlink information from the base station and transmits it to the processor 110 for processing. It also transmits uplink data to the base station. Typically, the RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and more. Furthermore, the RF unit 101 can communicate with the network and other devices via wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution) and 5G, etc.

[0077] WiFi is a short-range wireless transmission technology. A mobile terminal, through WiFi module 102, enables users to send and receive emails, browse web pages, and access streaming media, providing wireless broadband Internet access. Although FIG1 illustrates WiFi module 102, it is understood that it is not a required component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0078] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0079] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as a phone call mode, a recording mode, and a voice recognition mode, and may process such sound into audio data. In the phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0080] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0081] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0082] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1071) and drive the corresponding connection device according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive commands sent by the processor 110 and execute them. In addition, the touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0083] Optionally, the touch panel 1071 may overlay the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. The processor 110 then provides a corresponding visual output on the display panel 1061 based on the type of touch event. Although in FIG1 , the touch panel 1071 and the display panel 1061 are shown as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited to this specific embodiment.

[0084] The interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0085] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Furthermore, memory 109 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0086] Processor 110 is the control center of the mobile terminal, connecting all components of the mobile terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the mobile terminal and processes data, thereby providing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 110.

[0087] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0088] Although not shown in FIG. 1 , the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0089] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0090] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of the present application. The communication network system is an LTE system of universal mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203 and an operator's IP service 204, which are connected in sequence.

[0091] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0092] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 . Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface). eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide access from UE 201 to EPC 203 .

[0093] EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management. HSS 2032 provides registers for managing functions such as the Home Location Register (not shown) and stores user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, and it selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0094] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0095] Although the above introduction takes the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but can also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., which are not limited here.

[0096] Figure 3 is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes: a memory 1401 and a processor 1402, the memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. Its implementation principles and beneficial effects are similar and will not be repeated here. Optionally, the above controller also includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0097] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. The network node 150 includes: a memory 1501 and a processor 1502. The memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. Its implementation principles and beneficial effects are similar and will not be repeated here. Optionally, the above-mentioned controller also includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0098] The integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The software function modules stored in a storage medium include a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute some of the steps of the methods of various embodiments of the present application.

[0099] 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 instructions. When the computer program instructions are 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 instructions 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 instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.

[0100] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0101] First embodiment

[0102] 5 , which is a flow chart of a processing method according to a first embodiment, the method of the embodiment of the present application can be applied to a terminal device (such as a mobile phone, a car, etc.), and the processing method includes the following steps:

[0103] S1: Select or determine a cyclic prefix extension based on preset parameters, generate an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and communicate based on the orthogonal frequency division multiplexing symbol.

[0104] In embodiments of the present application, channel occupancy time (COT) sharing can be further facilitated by using a cyclic prefix extension (CPE). In this cyclic prefix extension, the transmitting node uses it to utilize the COT, preventing it from being idle for too long and losing access to unlicensed channels. This ensures that the interval between transmissions meets regulations, enabling COT sharing.

[0105] Optionally, in the sidelink transmission, the time domain reference point of the terminal sending the sidelink channel is the downlink time slot from the base station, and the terminal selects the timing advance (TA) between the terminal and the base station as the timing advance (TA) sent on the sidelink. SL ). Referring to Figures 6 and 7, Figure 6 is a first principle schematic diagram of the processing method according to the first embodiment, and Figure 7 is a second principle schematic diagram of the processing method according to the first embodiment. As shown in the figure, the transmitting terminal uses TA1 as the timing advance when sending the physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) and / or the physical sidelink data channel (Physical Sidelink Shared Channel, PSSCH), and the receiving terminal uses TA2 as the timing advance when sending the physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH). If the transmitting terminal wishes to share the COT it initiates with the receiving terminal, then from the perspective of the transmitting terminal, the preset interval between the control channel / data channel sent by the transmitting terminal and the feedback channel it receives should be equal to 16 / 25us and / or other fixed values, and the values ​​of these fixed values ​​are natural numbers, and the units of these fixed values ​​are microseconds.

[0106] Similarly, if the transmitting terminal shares the COT initiated by it with the receiving terminal, and the receiving terminal uses the COT to send the physical side link control channel and / or the physical side link data channel, then from the perspective of the transmitting terminal, the interval between the physical side link control channel and / or the physical side link data channel sent by the transmitting terminal and the physical side link control channel and / or the physical side link data channel sent by the receiving terminal should be equal to 16 / 25us and / or other fixed values, and the values ​​of these fixed values ​​are natural numbers, and the units of these fixed values ​​are microseconds.

[0107] Similarly, if the first transmitting terminal shares the COT initiated by it with the second transmitting terminal, and the second transmitting terminal uses the COT to send at least one of the physical sidelink control channel and / or physical sidelink data channel, physical sidelink feedback channel, physical sidelink synchronization signal block (S-SS / PSBCH), and sidelink channel state information reference signal (S-CSI-RS), then from the perspective of the first transmitting terminal, the interval between at least one of the physical sidelink control channel and / or physical sidelink data channel, physical sidelink feedback channel, physical sidelink synchronization signal block (S-SS / PSBCH), and sidelink channel state information reference signal (S-CSI-RS) sent by the first transmitting terminal and at least one of the physical sidelink control channel and / or physical sidelink data channel, physical sidelink feedback channel, physical sidelink synchronization signal block (S-SS / PSBCH), and sidelink channel state information reference signal (S-CSI-RS) sent by the second transmitting terminal should be equal to 16 / 25us and / or other fixed values, where the values ​​of these fixed values ​​are natural numbers and the units of these fixed values ​​are microseconds.

[0108] In order to ensure that the interval between the physical side link control channel and / or the physical side link data channel sent by the transmitting terminal and the physical side link feedback channel sent by the receiving terminal is equal to the preset interval, and / or in order to ensure that the interval between the physical side link control channel and / or the physical side link data channel sent by the transmitting terminal and the physical side link feedback channel sent by the receiving terminal is equal to the preset interval, in the embodiment of the present application, taking the preset interval of 16us or 25us as an example, the receiving terminal performs cyclic prefix extension (CPE) on the first symbol of the physical side link feedback channel and / or the physical side link control channel and / or the physical side link data channel and / or the symbol before the first symbol of the channel. When using cyclic prefix extension, it is necessary to determine the length of the cyclic prefix extension, that is, select or determine the cyclic prefix extension based on preset parameters.

[0109] Optionally, the preset parameters include at least one of the following: number of symbols, timing advance, propagation delay, and interval value.

[0110] In the embodiment of the present application, the length T of the CPE CPE It can be obtained through the following equation:

[0111] T1-TA1+T gap =T2-TA2-T CPE +T d

[0112] Among them, T1 is the end time of the transmission of the sending terminal, T2 is the start time of the transmission of the receiving terminal, TA1 is the timing advance of the sending terminal, TA2 is the timing advance of the receiving terminal, T dis the signal propagation delay on the Tx-Rx link.

[0113] By conversion, we can get

[0114] T CPE =(T2-T1)-(TA2-TA1)+T d -T gap

[0115] =∑0 Ci T sym -(TA2-TA1)+T d -T gap

[0116] =∑0 Ci T sym -((TA2-TA1)-T d +T gap )

[0117] Among them, T sym is the symbol length, C i is the number of symbols, T gap is the interval value,

[0118] TA1=(N TA,SL +N TA,offset )·T c TA2=(N TA,SL +N TA,offset )·T c

[0119] Among them, N TA,SL N is the sidelink timing advance parameter, provided by the MAC CE (medium access control layer control element) or RAR (random access response message); TA,offset Timing advance offset, provided by high-layer signaling or predefined; time domain unit T c =1 / (Δf max ·N f ), where Δf max =480·10 3 Hz, N f =4096.

[0120] Optionally, for the next transmission, in order to determine the size T of the CPE CPE , you need to obtain at least the following information:

[0121] Symbol number C i ; Timing advance TA (including the timing advance TA1 corresponding to the previous transmission and / or the timing advance TA2 corresponding to the next transmission); propagation delay T d ; Gap value T gap .

[0122] Optionally, before step S1, the method further includes: selecting or determining at least one of the following: number of symbols, timing advance, propagation delay, and interval value, that is, including at least one of the following steps:

[0123] Step S01: Select or determine the number of symbols;

[0124] Optionally, the number of symbols may be selected or determined based on sidelink control information.

[0125] Optionally, the number of symbols may be selected or determined based on downlink control information.

[0126] Optionally, the number of symbols may be selected or determined based on common sidelink control information.

[0127] Optionally, the number of symbols may be selected or determined based on the current sidelink partial bandwidth (BWP) and / or the subcarrier spacing of the sidelink resource pool. For example, when the subcarrier spacing is 15kHz and 30kHz, C i Equal to 1; when the subcarrier spacing is 60kHz, C i Equal to 2.

[0128] Step S02: Select or determine the timing advance;

[0129] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions.

[0130] Optionally, the first timing advance may be selected or determined based on at least one of sidelink radio resource control signaling, a medium access control information unit, and sidelink control information sent by the first terminal.

[0131] Optionally, the first terminal is a terminal that sends a previous transmission of two adjacent transmissions.

[0132] Optionally, the first timing advance and / or the second timing advance may be selected or determined based on a medium access control information unit sent by a network device (such as a base station).

[0133] Optionally, the second timing advance may be selected or determined based on a random access response message sent by a network device (such as a base station).

[0134] Optionally, the first timing advance and / or the second timing advance is a fixed value, the fixed value is a natural number, and the unit of the fixed value is microseconds.

[0135] Optionally, the difference between the first timing advance and the second timing advance is a preset value, that is, the first timing advance can be calculated based on the second timing advance. The preset value can be indicated by at least one of sidelink radio resource control signaling, a medium access control information element, a sidelink control information, and a random access response message. The preset value can be used as one of the parameters for selecting or determining cyclic prefix extension.

[0136] Optionally, the first timing advance is applied to the first transmission of two adjacent transmissions.

[0137] Optionally, the second timing advance is applied to the latter transmission of two adjacent transmissions.

[0138] Optionally, the timing advance is indicated by at least one of sidelink radio resource control signaling, medium access control information unit, sidelink control information and random access response message.

[0139] Step S03: Select or determine the propagation delay;

[0140] Optionally, the propagation delay may be selected or determined based on radio resource control signaling, a preset fixed value and / or a first signal.

[0141] In the embodiments of the present application, the propagation delay is the delay in signal propagation between a transmitting terminal and a receiving terminal, and / or the delay in signal propagation between a first transmitting terminal and a second transmitting terminal. Regarding propagation delay, the sidelink is primarily used in two scenarios: indoors, where the distance between terminals is small and the corresponding propagation delay is also small; and on highways, where the distance between terminals is large and the corresponding propagation delay is also large.

[0142] Optionally, the propagation delay may be disabled through Radio Resource Control (RRC) signaling, that is, the cyclic prefix extension calculation does not need to consider the propagation delay.

[0143] Optionally, a fixed propagation delay value is used, such as 1 us, 2 us, etc.

[0144] Optionally, the receiving terminal and / or the second transmitting terminal corresponding to the subsequent transmission need to estimate the propagation delay based on the received signal. The signal is sent by the first transmitting terminal corresponding to the previous transmission, and the signal can be at least one of the demodulation reference signal (DMRS) of the physical sidelink control channel (PSCCH), the DMRS of the physical sidelink share channel (PSSCH), the sidelink synchronization signal block (S-SS / PSBCH), and the channel state information reference signal (CSI-RS).

[0145] Step S04: Select or determine the interval value.

[0146] Optionally, the interval value may be selected or determined based on sidelink control information, downlink control information and / or a preset configuration.

[0147] In the embodiment of the present application, the interval value is set to 16us and / or 25us, which can be dynamically indicated by the SCI;

[0148] Optionally, if the subsequent transmission is a physical sidelink feedback channel sent by the receiving terminal, the parameters such as the number of symbols and the interval value can be indicated by sidelink control information (Sidelink Control Information, SCI).

[0149] Optionally, if the subsequent transmission is at least one of the physical side link control channel and / or physical side link data channel, physical side link feedback channel, physical side link synchronization signal block (S-SS / PSBCH), and side link channel state information reference signal (S-CSI-RS) sent by the second transmitting terminal, the number of symbols, interval value and other parameters can be indicated by sending downlink control information (DCI) through the base station.

[0150] Optionally, the above parameters, such as the number of symbols and the interval value, can also be jointly indicated by SCI, for example, by configuring a table, see Table 1, where each row represents a value of the above parameters. The table can be configured through RRC signaling.

[0151] Table 1: First configuration table

[0152] T ext index iC i Δi 0--1C125·10 -6 2C216·10 -6 +T TA 3C325·10 -6 +T TA

[0153] Optionally, after selecting or determining the cyclic prefix extension based on preset parameters, an orthogonal frequency division multiplexing (OFDM) symbol can be generated according to the cyclic prefix extension. For an OFDM symbol using the cyclic prefix extension, the length of the CPE is added before the cyclic prefix CP to generate an OFDM symbol, and communication can be performed based on the OFDM symbol.

[0154] Through the above-mentioned scheme, this embodiment selects or determines a cyclic prefix extension based on the number of symbols, timing advance, propagation delay and / or interval value, and then generates an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and communicates based on the orthogonal frequency division multiplexing symbol, which helps to preserve channel occupancy time and can increase the probability of seizing unlicensed spectrum during side link transmission.

[0155] Second embodiment

[0156] 8 , which is a flow chart of a processing method according to a second embodiment, based on the first embodiment of the present application, this embodiment discloses a method for selecting or determining the number of symbols in step S01, which specifically includes at least one of the following:

[0157] S011: Selecting or determining the number of symbols based on the sidelink control information;

[0158] Optionally, for the number of symbols C i It can be dynamically indicated by the side link control information SCI. Optionally, a field is added to the SCI format to indicate the number of symbols required for the cyclic prefix. For example, 2 bits are added and the field points to Table 1. Optionally, the C in the table i The values ​​are C1, C2, and C3, respectively, C1=1 for μ∈{0,1}, C1=2 for μ=2; C2 and C3 are configured through RRC signaling, and their values ​​are {1,...,28}. Optionally, when the subcarrier spacing is 15 kHz, the values ​​of C2 and C3 are {1,...,28}; when the subcarrier spacing is 30 kHz, the value of C2 is {1,...,28}, and the value of C3 is {2,...,28}; when the subcarrier spacing is 60 kHz, the value of C2 is {2,...,28}, and the value of C3 is {3,...,28}.

[0159] Optionally, the sidelink control information is carried in a physical sidelink control channel and is sent by a first transmitting terminal, wherein the first transmitting terminal is a terminal that sends a previous transmission of two adjacent transmissions.

[0160] Optionally, the first sending terminal is a terminal that initiates COT.

[0161] S012: Selecting or determining the number of symbols based on downlink control information;

[0162] Optionally, the number of symbols C i This can be dynamically indicated via downlink control information (DCI). Optionally, a field is added to the DCI format to indicate the number of symbols required for the cyclic prefix. For example, two bits are added, and the field points to Table 1. Upon receiving the DCI, the first transmitting terminal sets the corresponding SCI content based on the indication in the DCI and sends the SCI to the receiving terminal and / or the second transmitting terminal.

[0163] Optionally, after the receiving terminal and / or the second transmitting terminal receives the DCI, the number of symbols is selected or determined according to an indication in the DCI.

[0164] S013: Selecting or determining the number of symbols based on the public side link control information;

[0165] Optionally, the number of symbols C i It can be dynamically indicated by the public side link control information public SCI, which is used to indicate the COT length, COT remaining time, COT switching point, symbol number C i , channel access type, etc.

[0166] S014: Select or determine the number of symbols based on the current side link partial bandwidth and / or the subcarrier spacing of the side link resource pool.

[0167] Optionally, the number of symbols C i Associated with the current sidelink partial bandwidth BWP and / or the subcarrier spacing of the sidelink resource pool, for example, when the subcarrier spacing is 15kHz and 30kHz, C i Equal to 1; when the subcarrier spacing is 60kHz, C i Equal to 2.

[0168] Optionally, when the number of symbols C i When it is greater than 1, the first sending terminal discards the last transmitted C i -1 symbol.

[0169] This embodiment uses the above-mentioned scheme to select or determine the number of symbols based on the side link control information, downlink control information, common side link control information, the current side link partial bandwidth and / or the subcarrier spacing of the side link resource pool, and then select or determine the cyclic prefix extension based on the number of symbols to generate orthogonal frequency division multiplexing symbols, and then perform side link channel transmission based on the orthogonal frequency division multiplexing symbols, which helps to preserve channel occupancy time and increase the probability of seizing unlicensed spectrum during side link transmission.

[0170] Third embodiment

[0171] 9 is a flow chart of a processing method according to a third embodiment. Based on the above embodiment, this embodiment discloses a method for selecting or determining a timing advance in step S02. The timing advance includes a first timing advance and / or a second timing advance for two adjacent transmissions. The manner of selecting or determining the timing advance specifically includes at least one of the following:

[0172] S021: Select or determine the first timing advance based on at least one of the sidelink radio resource control signaling, the medium access control information unit, and the sidelink control information sent by the first terminal;

[0173] For the first timing advance TA1 corresponding to the previous transmission, the first timing advance TA1 is the timing advance used for the transmission of the transmitting terminal, and the timing advance is equal to TA1=(N TA,SL +N TA,offset )·T c , where N TA,SL It can be equal to the timing advance N of the uplink of the current working cell TA1 , N TA =T A ·16·64 / 2 μ , T A Obtained through random access response RAR message or MAC CE. TA,offset It is obtained through RRC signaling indication or predefined according to the protocol.

[0174] Optionally, N TA,SL Can be equal to zero.

[0175] Optionally, TA1 may notify the receiving terminal and / or the second transmitting terminal corresponding to the next transmission through the side link radio resource control signaling SL-RRC sent by the first transmitting terminal corresponding to the previous transmission.

[0176] Optionally, TA1 may notify the receiving terminal and / or the second transmitting terminal corresponding to the next transmission through the medium access control information unit MAC-CE sent by the first transmitting terminal corresponding to the previous transmission.

[0177] Optionally, TA1 may notify the receiving terminal and / or the second transmitting terminal corresponding to the next transmission through the side link control information SCI sent by the first transmitting terminal corresponding to the previous transmission.

[0178] S022: Select or determine the first timing advance and / or the second timing advance based on the medium access control information unit sent by the network device;

[0179] For the second timing advance TA2 corresponding to the next transmission, the second timing advance TA2 is the timing advance used for the transmission of the receiving terminal / or the second transmitting terminal, and the timing advance is equal to TA2=(N TA,SL +N TA,offset )·T c , where N TA,SL It can be equal to the timing advance N of the uplink of the current working cell TA2 , N TA =T A ·16·64 / 2 μ , T A Obtained through RAR message or MAC CE. TA,offset The transmission is obtained through RRC signaling instructions or predefined according to the protocol. The last transmission sent by the receiving terminal is a physical sidelink feedback channel (PSFCH).

[0180] Optionally, the second timing advance TA2 is a timing advance used for transmission by a second transmitting terminal, and the second transmitting terminal shares the COT used by the transmitting terminal. The subsequent transmission sent by the second transmitting terminal is at least one of a physical sidelink control channel and / or a physical sidelink data channel, a physical sidelink feedback channel, a physical sidelink synchronization signal block (S-SS / PSBCH), and a sidelink channel state information reference signal (S-CSI-RS).

[0181] Optionally, N TA,SL Can be equal to zero.

[0182] Optionally, TA1 may notify the corresponding receiving terminal and / or the second transmitting terminal once through a medium access control information element MAC-CE sent by the base station.

[0183] Optionally, when the TA1 on the transmitting terminal side is updated, the updated TA1 needs to be synchronously notified to the receiving terminal and / or the second transmitting terminal corresponding to the next transmission.

[0184] Optionally, TA2 may notify the corresponding receiving terminal and / or the second transmitting terminal once through a medium access control information element MAC-CE sent by the base station.

[0185] S023: Select or determine the second timing advance based on the random access response message sent by the network device.

[0186] Optionally, TA2 may notify the corresponding receiving terminal and / or the second transmitting terminal of the subsequent transmission via a random access response (RAR) message sent by the base station.

[0187] Optionally, the first timing advance and / or the second timing advance is a fixed value, the fixed value is a natural number, and the unit of the fixed value is microseconds.

[0188] Optionally, the difference between the first timing advance and the second timing advance is a preset value, that is, the first timing advance can be calculated based on the second timing advance. The preset value can be indicated by at least one of sidelink radio resource control signaling, a medium access control information element, a sidelink control information, and a random access response message. The preset value can be used as one of the parameters for selecting or determining cyclic prefix extension.

[0189] Optionally, the first timing advance is applied to the first transmission of two adjacent transmissions.

[0190] Optionally, the second timing advance is applied to the latter transmission of two adjacent transmissions.

[0191] Optionally, the timing advance is indicated by at least one of sidelink radio resource control signaling, medium access control information unit, sidelink control information and random access response message.

[0192] This embodiment, through the above-described scheme, selects or determines a first timing advance and / or a second timing advance for two adjacent transmissions. The first timing advance is selected or determined based on at least one of sidelink radio resource control signaling, a medium access control information unit, and sidelink control information sent by the first terminal; the first timing advance and / or the second timing advance are selected or determined based on a medium access control information unit sent by a network device; and the second timing advance is selected or determined based on a random access response message sent by the network device. Furthermore, a cyclic prefix extension is selected or determined based on the first timing advance and / or the second timing advance for use in sidelink channel transmission, thereby preserving channel occupancy time and increasing the probability of seizing unlicensed spectrum during sidelink transmission.

[0193] Fourth embodiment

[0194] 10 is a flow chart of a processing method according to a fourth embodiment. The method of the embodiment of the present application can be executed by a terminal device (such as a mobile phone, a vehicle, etc.). The processing method includes the following steps:

[0195] S10: Send a first message, where the first message is used to select or determine a first parameter, and the first parameter is used to select or determine a cyclic prefix extension.

[0196] In an embodiment of the present application, a first message is sent by a first sending terminal to a receiving terminal and / or a second sending terminal, so that the receiving terminal and / or the second sending terminal select or determine a first parameter based on the first message, use the first parameter to select or determine a cyclic prefix extension, and generate an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension for communication.

[0197] Optionally, the first message includes at least one of the following: sidelink control information, common sidelink control information, sidelink radio resource control signaling, and sidelink medium access control information unit;

[0198] Optionally, the first parameter includes at least one of the following: number of symbols, first timing advance, and interval value.

[0199] Optionally, the step of selecting or determining the first parameter based on the first message includes at least one of the following:

[0200] The number of symbols may be selected or determined based on the sidelink control information, the downlink control information, the common sidelink control information, the current sidelink portion of the bandwidth, and / or the subcarrier spacing of the sidelink resource pool;

[0201] The first timing advance may be selected or determined based on at least one of sidelink radio resource control signaling, a sidelink medium access control information unit, and sidelink control information sent by the first transmitting terminal;

[0202] The propagation delay may be selected or determined based on sidelink radio resource control signaling, a preset fixed value and / or a first signal;

[0203] The interval value may be selected or determined based on sidelink control information.

[0204] Optionally, after step S10, the method further includes: in response to the number of symbols being greater than a preset threshold, discarding the symbol of the first transmission in two adjacent transmissions.

[0205] In the embodiment of the present application, when the symbol number C i When it is greater than 1, the first sending terminal discards the last transmitted C i -1 symbol.

[0206] Optionally, before step S10, the method further includes: selecting or determining the first message based on the second message.

[0207] In an embodiment of the present application, the first sending terminal can receive a second message sent by a network device (such as a base station), and the first sending terminal can forward the first timing advance carried in the second message from the base station to the receiving terminal and / or the second sending terminal through the first message.

[0208] This embodiment uses the above-mentioned scheme to send a first message including sidelink control information, common sidelink control information, sidelink radio resource control signaling and / or sidelink medium access control information unit to select or determine a first parameter including the number of symbols, a first timing advance and / or an interval value. The first parameter can be used to select or determine a cyclic prefix extension. The orthogonal frequency division multiplexing symbols generated according to the cyclic prefix extension can be used in the communication process, thereby improving the probability of seizing unlicensed spectrum during sidelink transmission.

[0209] Fifth embodiment

[0210] 11 is a flow chart of a processing method according to a fifth embodiment. The method of the embodiment of the present application may be executed by a network device (such as a base station). The processing method includes the following steps:

[0211] A10: Send a second message, where the second message is used to select or determine a second parameter, and the second parameter is used to select or determine a cyclic prefix extension.

[0212] In an embodiment of the present application, a second message is sent through a network device to select or determine a second parameter, and then a cyclic prefix extension is selected or determined based on the second parameter to generate symbols for a communication process.

[0213] Optionally, the second message includes at least one of the following: downlink control information, a medium access control information unit, and a random access response message;

[0214] Optionally, the second parameter includes at least one of the following: number of symbols, timing advance, and interval value.

[0215] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions.

[0216] In an embodiment of the present application, a method for selecting or determining the first parameter based on the downlink control information, the medium access control information unit, and / or the random access response message in the second message includes at least one of the following:

[0217] Selecting or determining the number of symbols based on downlink control information;

[0218] Selecting or determining an interval value based on downlink control information;

[0219] Selecting or determining a first timing advance and / or a second timing advance based on a medium access control information unit;

[0220] A second timing advance is selected or determined based on the random access response message.

[0221] The embodiment of the present application adopts the above-mentioned scheme, specifically by sending a second message to select or determine a second parameter, and then selects or determines a cyclic prefix extension based on the second parameter to generate symbols for the communication process, which helps to reserve channel occupancy time and increase the probability of seizing unlicensed spectrum during side link transmission.

[0222] Sixth embodiment

[0223] Based on the above embodiments of the present application, this embodiment further discloses the processing method in the above embodiments.

[0224] In this embodiment of the present application, if no cell exists in the spectrum used for sidelink communication, that is, the first transmitting terminal, the receiving terminal, and / or the second transmitting terminal cannot communicate with the base station in the spectrum, then the TA used by the first transmitting terminal, the receiving terminal, and / or the second transmitting terminal is 0. The length of the CPE can then be determined by the following formula.

[0225] T CPE =(T2-T1)+T d -T gap

[0226] =∑0 Ci T sym -(T gap -T d )

[0227] Among them, T sym is the symbol length, C i is the number of symbols, T gap is the interval value.

[0228] For the next transmission, in order to determine the size of the CPE T CPE , you need to select or determine the number of symbols C i , propagation delay T d and the gap value (gap) T gap .

[0229] In the embodiment of the present application, for the symbol number C i It can be indicated dynamically by SCI. Optionally, a field is added to the SCI format to indicate the number of symbols required for the cyclic prefix. For example, 2 bits are added and the field points to the above Table 1. Optionally, the C in the table iThe values ​​are C1, C2, and C3, respectively, C1=1 for μ∈{0,1}, C1=2 for μ=2; C2 and C3 are configured through RRC signaling, and their values ​​are {1,...,28}. Optionally, when the subcarrier spacing is 15 kHz, the values ​​of C2 and C3 are {1,...,28}; when the subcarrier spacing is 30 kHz, the value of C2 is {1,...,28}, and the value of C3 is {2,...,28}; when the subcarrier spacing is 60 kHz, the value of C2 is {2,...,28}, and the value of C3 is {3,...,28}.

[0230] Optionally, the number of symbols C i It can be dynamically indicated by the public SCI, which is used to indicate the COT length, COT remaining time, COT switching point, symbol number C i , channel access type, etc.

[0231] Optionally, the number of symbols C i Associated with the subcarrier spacing of the current sidelink BWP and / or sidelink resource pool, for example, when the subcarrier spacing is 15kHz and 30kHz, C i Equal to 1; when the subcarrier spacing is 60kHz, C i Equal to 2.

[0232] Optionally, when the number of symbols C i When it is greater than 1, the sending terminal discards the last transmitted C i -1 symbol.

[0233] In the embodiment of the present application, regarding the propagation delay, it is considered that the side link is mainly used in two scenarios, one is the indoor scenario, where the distance between terminals is small and the corresponding propagation delay is also small; the other is the highway scenario, where the distance between terminals is large and the corresponding propagation delay is also large.

[0234] Optionally, the propagation delay may be disabled through RRC signaling, that is, the propagation delay does not need to be considered in the cyclic prefix extension calculation.

[0235] Optionally, a fixed propagation delay value is used, such as 1 us, 2 us, etc.

[0236] Optionally, the receiving terminal and / or the second transmitting terminal corresponding to the subsequent transmission needs to estimate the propagation delay based on the received signal. The signal is sent by the first transmitting terminal corresponding to the previous transmission, and the signal may be at least one of a DMRS of a PSCCH channel, a DMRS of a PSSCH channel, a sidelink synchronization signal, and a sidelink CSI-RS signal.

[0237] In the embodiment of the present application, the interval value is set to 16us and / or 25us, which can be dynamically indicated by the SCI;

[0238] Optionally, if the subsequent transmission is a sidelink physical feedback channel sent by the receiving terminal, the parameters such as the number of symbols and the interval value may be indicated by the SCI.

[0239] Optionally, if the subsequent transmission is at least one of the physical side link control channel and / or physical side link data channel, physical side link feedback channel, physical side link synchronization signal block (S-SS / PSBCH), and side link channel state information reference signal (S-CSI-RS) sent by the second transmitting terminal, the parameters such as the number of symbols and interval value can be indicated by SCI.

[0240] Optionally, the above parameters, such as the number of symbols and the interval value, can also be jointly indicated by the SCI, for example, by configuring a table, where each row in the table represents a value of the above parameters. The table can be configured through RRC signaling.

[0241] Optionally, the interval value, which is 16 us and / or 25 us, can be predefined.

[0242] Optionally, the cyclic prefix extension is applied to generate an OFDM symbol. Optionally, for an OFDM symbol using the cyclic prefix extension, the length of the CPE is added before the cyclic prefix CP to generate an OFDM symbol.

[0243] In the embodiment of the present application, there is no cell on the spectrum used for side link communication, that is, the first transmitting terminal and the receiving terminal and / or the second transmitting terminal cannot communicate with the base station on the spectrum, and the timing advance TA used by the first transmitting terminal and the receiving terminal and / or the second transmitting terminal is 0, by selecting or determining the symbol number C i , propagation delay T d The cyclic prefix extension is determined by the cyclic prefix and interval values. Orthogonal frequency division multiplexing symbols are generated based on the cyclic prefix extension, and then sidelink channel transmission is performed based on the Orthogonal frequency division multiplexing symbols. This helps preserve channel occupancy time and increases the probability of seizing unlicensed spectrum during sidelink transmission. This expands the method for determining the cyclic prefix extension in different application scenarios and increases the flexibility of the method for determining the cyclic prefix extension.

[0244] Seventh embodiment

[0245] Based on the above embodiments of the present application, this embodiment further discloses the processing method in the above embodiments.

[0246] In an embodiment of the present application, for multiple consecutive transmissions by the first transmitting terminal, considering that in the current sidelink transmission subframe structure, there is always a gap symbol at the end of the subframe for Tx / Rx switching (and when the UE RRC accesses the network, switching to UL transmission through the TA). It is necessary to use cyclic prefix extension technology to ensure that the size of this gap is equal to 16 / 25us or less than 16us. When using cyclic prefix extension, the length of the cyclic prefix extension needs to be determined. Since the two consecutive transmissions are from the same transmitting terminal, there is no need to consider the transmission propagation delay.

[0247] The length of CPE is T CPE It can be obtained through the following equation:

[0248] T1-TA old +T gap =T2-TA new -T CPE

[0249] Among them, T1 is the end time of the previous transmission, T2 is the start time of the next transmission, and TA old is the timing advance of the previous transmission, TA new The timing advance for the next transmission.

[0250] By conversion, we can get

[0251] T CPE =(T2-T1)-(TA new -TA old )-T gap

[0252] =∑0 Ci T sym -(TA new -TA old )-T gap

[0253] =∑0 Ci T sym -((TA new -TA old )+T gap )

[0254] Among them, T sym is the symbol length, C i is the number of symbols, T gap is the interval value, TA old =(N TA,SL +N TA,offset )·T c TA new =(N TA,SL +N TA,offset)·T c

[0255] For the next transmission, in order to determine the size of the CPE, it is necessary to select or determine the number of symbols C i , the timing advance TA corresponding to the previous transmission old , the timing advance TA corresponding to the next transmission new and the gap value (gap) T gap .

[0256] In the embodiment of the present application, for the symbol number C i It can be dynamically indicated by DCI. Optionally, a field is added to the DCI format to indicate the number of symbols required for the cyclic prefix. For example, 2 bits are added and the field points to the above Table 1. Optionally, the C in the table i The values ​​are C1, C2, and C3, C1=1 for μ∈{0,1}, C1=2 for μ=2; C2 and C3 are configured through RRC signaling, and their values ​​are {1,...,28}. Optionally, when the subcarrier spacing is 15 kHz, the values ​​of C2 and C3 are {1,...,28}; when the subcarrier spacing is 30 kHz, the value of C2 is {1,...,28}, and the value of C3 is {2,...,28}; when the subcarrier spacing is 60 kHz, the value of C2 is {2,...,28}, and the value of C3 is {3,...,28}.

[0257] Optionally, the number of symbols C i Associated with the subcarrier spacing of the current sidelink BWP and / or sidelink resource pool, for example, when the subcarrier spacing is 15kHz and 30kHz, C i Equal to 1; when the subcarrier spacing is 60kHz, C i Equal to 2.

[0258] Optionally, when the number of symbols C i When it is greater than 1, the sending terminal discards the last transmitted C i -1 symbol.

[0259] In the embodiment of the present application, for the TA corresponding to the previous transmission old And the TA corresponding to the next transmission new , can be obtained through MAC CE from the base station.

[0260] In the embodiment of the present application, the timing advance TA corresponding to the previous transmission old , the timing advance TA old The timing advance used by the sending terminal in the previous transmission is equal to TA old =(N TA,SL+N TA,offset )·T c , where N TA,SL It can be equal to the timing advance N of the uplink of the current working cell TA_old , N TA =T A ·16·64 / 2 μ , T A Obtained through RAR message or MAC CE. TA,offset It is obtained through RRC signaling indication or predefined according to the protocol.

[0261] Optionally, N TA,SL Can be equal to zero.

[0262] Optionally, TA old The terminal corresponding to the previous transmission may be notified via the MAC-CE sent by the base station.

[0263] Optionally, TA old The terminal corresponding to the previous transmission may be notified via a RAR message sent by the base station.

[0264] In the embodiment of the present application, the timing advance TA corresponding to the next transmission new , the timing advance TA new The timing advance used by the transmitting terminal for transmission is equal to TA new =(N TA,SL +N TA,offset )·T c , where N TA,SL It can be equal to the timing advance N of the uplink of the current working cell TA_new , N TA =T A ·16·64 / 2 μ , T A Obtained through RAR message or MAC CE. TA,offset It is obtained through RRC signaling indication or predefined according to the protocol.

[0265] Optionally, the timing advance TA new The timing advance used by the next transmission, where the next transmission and the previous transmission are in the same COT.

[0266] Optionally, N TA,SL Can be equal to zero.

[0267] Optionally, TA new The corresponding terminal may be transmitted once after the MAC-CE notification sent by the base station.

[0268] Optionally, TA newThe corresponding terminal may be notified via a RAR message sent by the base station and then transmitted once.

[0269] In an embodiment of the present application, the interval value is Xus, 16us and / or 25us, which can be dynamically indicated through DCI, where X is a value less than 16, and the value of X can be configured through RRC.

[0270] Optionally, if the DCI indication interval value is Xus, the transmitting terminal does not need to perform LBT when sending subsequent physical side link control channels and / or physical side link data channels, physical side link feedback channels, physical side link synchronization signal blocks (S-SS / PSBCH), and side link channel state information reference signals (S-CSI-RS); otherwise, an LBT is performed.

[0271] Optionally, the interval value is set to 16us and / or 25us, which can be dynamically indicated through DCI;

[0272] Optionally, the above parameters, such as the number of symbols and the interval value, may also be jointly indicated via DCI, for example, by configuring a table, where each row in the table represents a value of the above parameters. The table may be configured via RRC signaling.

[0273] 12 and 13 , FIG12 is a schematic diagram of a first principle of a processing method according to the seventh embodiment, and FIG13 is a schematic diagram of a second principle of a processing method according to the seventh embodiment. As shown in the figure, the cyclic prefix extension is applied to generate an OFDM symbol. Optionally, for an OFDM symbol using cyclic prefix extension, the length of the CPE is added before the cyclic prefix CP to generate an OFDM symbol.

[0274] In the embodiment of the present application, when there are multiple consecutive transmissions for the first terminal, since the two consecutive transmissions are from the same transmitting terminal, there is no need to consider the transmission propagation delay, by selecting or determining the number of symbols C i , the timing advance TA corresponding to the previous transmission old , the timing advance TA corresponding to the next transmission new The cyclic prefix extension is determined by the cyclic prefix and interval values. Orthogonal frequency division multiplexing symbols are generated based on the cyclic prefix extension. Sidelink channel transmission is performed based on the Orthogonal frequency division multiplexing symbols. This helps preserve channel occupancy time and increases the probability of seizing unlicensed spectrum during sidelink transmission. This expands the methods for determining the cyclic prefix extension in different application scenarios and increases the flexibility of the cyclic prefix extension determination method.

[0275] Please refer to Figure 14, which is a schematic diagram of the structure of the processing device provided in an embodiment of the present application. The device can be installed on the terminal device in the above method embodiment, and the device can specifically be a server. The processing device shown in Figure 14 can be used to perform some or all of the functions in the method embodiment described in the above embodiment. As shown in Figure 14, the processing device 110 includes:

[0276] The processing module 111 is configured to select or determine a cyclic prefix extension based on preset parameters, generate an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and perform communication based on the orthogonal frequency division multiplexing symbol.

[0277] Optionally, the preset parameters include at least one of the following: number of symbols, timing advance, propagation delay, and interval value.

[0278] Optionally, before the steps of selecting or determining a cyclic prefix extension based on preset parameters, generating an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and communicating based on the orthogonal frequency division multiplexing symbol, the method further includes:

[0279] Select or determine at least one of the following: number of symbols, timing advance, propagation delay, and interval value.

[0280] Optionally, the method of selecting or determining the number of symbols includes at least one of the following:

[0281] selecting or determining the number of symbols based on sidelink control information;

[0282] Selecting or determining the number of symbols based on downlink control information;

[0283] Selecting or determining the number of symbols based on the public side link control information;

[0284] The number of symbols is selected or determined based on the current side link partial bandwidth and / or the subcarrier spacing of the side link resource pool.

[0285] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions, and a method of selecting or determining the timing advance includes at least one of the following:

[0286] Selecting or determining the first timing advance based on at least one of sidelink radio resource control signaling, a medium access control information unit, and sidelink control information sent by the first terminal;

[0287] Selecting or determining the first timing advance and / or the second timing advance based on a medium access control information unit sent by a network device (such as a base station);

[0288] The second timing advance is selected or determined based on a random access response message sent by a network device (such as a base station).

[0289] Optionally, the method of selecting or determining the propagation delay includes at least one of the following:

[0290] Selecting or determining the propagation delay based on radio resource control signaling;

[0291] Selecting or determining the propagation delay based on a preset fixed value;

[0292] The propagation delay is selected or determined based on the first signal.

[0293] Optionally, the step of selecting or determining the interval value includes at least one of the following:

[0294] Selecting or determining the interval value based on sidelink control information;

[0295] Selecting or determining the interval value based on downlink control information;

[0296] The interval value is selected or determined based on a preset configuration.

[0297] Some of the steps involved in the processing method according to the embodiment of the present application can be performed by the modules in the processing device shown in Figure 14. The various units in the processing device shown in Figure 14 can be separately or entirely merged into one or several other modules to constitute, or one (some) of the modules can also be further divided into multiple smaller units in function to constitute, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In actual applications, the function of a module can also be realized by multiple modules, or the function of multiple modules can be realized by one module. In other embodiments of the present application, the processing device can also include other modules. In actual applications, these functions can also be implemented with the assistance of other modules, and can be implemented by the collaboration of multiple modules.

[0298] The processing device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0299] Please refer to FIG. 15 , which is a second structural diagram of a processing device provided in an embodiment of the present application. As shown in FIG. 15 , the processing device 120 includes:

[0300] The sending module 121 is configured to send a first message, where the first message is used to select or determine a first parameter, and the first parameter is used to select or determine a cyclic prefix extension.

[0301] Optionally, the first message includes at least one of the following: side link control information, common side link control information, side link radio resource control signaling, and side link medium access control information unit.

[0302] Optionally, the first parameter includes at least one of the following: number of symbols, first timing advance, and interval value.

[0303] Optionally, after the step of sending the first message, the method further includes: in response to the number of symbols being greater than a preset threshold, discarding the symbol of the first transmission in two adjacent transmissions.

[0304] Optionally, the processing device is further used to: send a first signal, where the first signal is used to select or determine a propagation delay.

[0305] The processing device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0306] FIG16 is a third structural diagram of a processing device provided in an embodiment of the present application. As shown in FIG16 , the processing device 130 includes:

[0307] The sending module 131 is configured to send a second message, where the second message is used to select or determine a second parameter, and the second parameter is used to select or determine a cyclic prefix extension.

[0308] Optionally, the second message includes at least one of the following: downlink control information, a medium access control information unit, and a random access response message.

[0309] Optionally, the second parameter includes at least one of the following: number of symbols, timing advance, and interval value.

[0310] Optionally, the timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions.

[0311] Refer to Figure 17, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 17, the communication device 140 described in this embodiment can be the terminal device (or component that can be used for a terminal device) or network device (or component that can be used for a network device) mentioned in the aforementioned method embodiment. Communication device 140 can be used to implement the methods corresponding to the terminal device or network device described in the aforementioned method embodiment. For details, please refer to the description of the aforementioned method embodiment.

[0312] The communication device 140 may include one or more processors 141, also referred to as processing units, which may perform certain control or processing functions. Processor 141 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, while the central processing unit may be used to control the communication device, execute software programs, and process software program data.

[0313] Optionally, the processor 141 may also store instructions 143 or data (eg, intermediate data). Optionally, the instructions 143 may be executed by the processor 141, so that the communication device 140 executes the method corresponding to the terminal device or network device described in the above method embodiment.

[0314] Optionally, the communication device 140 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0315] Optionally, the communication device 140 may include one or more memories 142 , on which instructions 144 may be stored. The instructions may be executed on the processor 141 , so that the communication device 140 executes the method described in the above method embodiment.

[0316] Optionally, data may also be stored in the memory 142. The processor 141 and the memory 142 may be provided separately or integrated together.

[0317] Optionally, the communication device 140 may further include a transceiver 145 and / or an antenna 146. The processor 141 may be referred to as a processing unit, and controls the communication device 140 (terminal device, core network device, or wireless access network device). The transceiver 145 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, and is used to implement the transceiver functions of the communication device 140.

[0318] Optionally, if the communication device 140 is used to implement operations corresponding to the terminal device in the above-mentioned embodiments, for example, the transceiver 145 can receive or send the first message and the second message; and the processor 141 selects or determines the time domain position and / or frequency domain position of each transmission opportunity of the control resource set based on preset content.

[0319] Optionally, the specific implementation process of the processor 141 and the transceiver 145 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0320] Optionally, if the communication device 140 is used to implement operations corresponding to the network devices in the above embodiments, for example, the transceiver 145 may receive or send the first message and the second message.

[0321] Optionally, the specific implementation process of the processor 141 and the transceiver 145 can refer to the relevant description of the above embodiments, and will not be repeated here.

[0322] The processor 141 and transceiver 145 described in this application may be implemented on an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed-signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 141 and transceiver 145 may also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive Channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0323] In this application, a communication device may be a terminal device (such as a mobile phone) or a network device (such as a base station), and the specific definition needs to be determined based on the context. In addition, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0324] Although the communication device is described above by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned terminal device or network device, and the structure of the communication device may not be limited to Figure 17. The communication device may be an independent device or may be part of a larger device.

[0325] An embodiment of the present application further provides a communication system, comprising: a terminal device as in any of the above method embodiments; and a network device as in any of the above method embodiments.

[0326] The present application also provides a communication device including a memory and a processor. The memory stores a processing program, and when the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented. The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0327] An embodiment of the present application further provides a storage medium having a processing program stored thereon. When the processing program is executed by a processor, the steps of the processing method in any of the above embodiments are implemented.

[0328] In the embodiments of the communication device and computer-readable storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned processing method embodiments may be included. The expanded and explained contents of the specification are basically the same as those of the embodiments of the above-mentioned methods and will not be repeated here.

[0329] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes the methods in the various possible implementation modes described above.

[0330] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to call and run the computer programs from the memory, so that a device equipped with the chip executes the methods in the various possible implementation modes as described above.

[0331] It is understood that the above scenarios are merely examples and do not limit the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0332] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0333] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0334] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0335] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0336] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0337] The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0338] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the method of each embodiment of the present application.

[0339] 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 instructions. When the computer program instructions are 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 instructions 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 instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. 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. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)).

[0340] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A processing method, wherein: The following steps are involved: S1: Select or determine a cyclic prefix extension based on preset parameters, generate an orthogonal frequency division multiplexing symbol based on the cyclic prefix extension, and communicate based on the orthogonal frequency division multiplexing symbol.

2. The method according to claim 1, wherein The preset parameters include at least one of the following: number of symbols, timing advance, propagation delay, interval value; and / or, before step S1, further comprising: selecting or determining at least one of the following: number of symbols, timing advance, propagation delay, interval value.

3. The method of claim 2, wherein: The method of selecting or determining the number of symbols includes at least one of the following: selecting or determining the number of symbols based on sidelink control information; Selecting or determining the number of symbols based on downlink control information; Selecting or determining the number of symbols based on the public side link control information; The number of symbols is selected or determined based on the current side link partial bandwidth and / or the subcarrier spacing of the side link resource pool.

4. The method according to claim 2, wherein: The timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions. A method of selecting or determining the timing advance includes at least one of the following: Selecting or determining the first timing advance based on at least one of sidelink radio resource control signaling, a medium access control information unit, and sidelink control information sent by the first terminal; Selecting or determining the first timing advance and / or the second timing advance based on a medium access control information unit sent by a network device; The second timing advance is selected or determined based on the random access response message sent by the network device.

5. The method according to claim 2, wherein: The method of selecting or determining the propagation delay includes at least one of the following: Selecting or determining the propagation delay based on radio resource control signaling; Selecting or determining the propagation delay based on a preset fixed value; The propagation delay is selected or determined based on the first signal.

6. The method of claim 2, wherein: The step of selecting or determining the interval value includes at least one of the following: Selecting or determining the interval value based on sidelink control information; Selecting or determining the interval value based on downlink control information; The interval value is selected or determined based on a preset configuration.

7. A processing method, wherein: The following steps are involved: S10: Send a first message, where the first message is used to select or determine a first parameter, and the first parameter is used to select or determine a cyclic prefix extension.

8. The method of claim 8, wherein: The first message includes at least one of the following: side link control information, common side link control information, side link radio resource control signaling, side link medium access control information unit; and / or, the first parameter includes at least one of the following: number of symbols, first timing advance, interval value.

9. The method according to claim 8, further comprising after step S10: In response to the number of symbols being greater than a preset threshold, a symbol of a previous transmission in two adjacent transmissions is discarded.

10. The method according to any one of claims 7 to 9, wherein The following steps are also included: A first signal is sent, where the first signal is used to select or determine a propagation delay.

11. The method according to any one of claims 7 to 9, wherein Before step S10, the following steps are also included: The first message is selected or determined based on the second message.

12. A processing method, wherein: The following steps are involved: A10: Send a second message, where the second message is used to select or determine a second parameter, and the second parameter is used to select or determine a cyclic prefix extension.

13. The method of claim 12, wherein: The second message includes at least one of the following: downlink control information, medium access control information unit, random access response message; and / or the second parameter includes at least one of the following: number of symbols, timing advance, interval value.

14. The method of claim 13, wherein: The timing advance includes a first timing advance and / or a second timing advance used for two adjacent transmissions.

15. A communication device, wherein: include: A memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of the processing method according to claim 1, 7, or 12 when executed by the processor.

16. A storage medium, wherein: The storage medium stores a computer program, which implements the steps of the processing method according to claim 1, 7 or 12 when executed by a processor.

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