Codebook determination method, communication device and storage medium

Abstract

The method comprises the following steps: selecting or determining a candidate physical side link data channel receiving opportunity set based on first preset content; and selecting or determining a hybrid automatic repeat request codebook based on the candidate physical side link data channel receiving opportunity set, and improving the HARQ bearing capacity on the PSFCH resource, thereby ensuring timely transmission of HARQ feedback.

Description

Codebook determination method, communication device and storage medium Technical Field

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

[0002] The Physical Sidelink Feedback Channel (PSFCH) is used to carry Hybrid Acknowledgment Request (HARQ) feedback for sidelink transmissions received from the Physical Sidelink Share Channel (PSSCH). The structure of the PSFCH is similar to the Physical Uplink Control Channel (PUCCH) format 0, that is, ACK or NACK is represented by rotating the different phases of a frequency domain basis sequence of length 12. The phase-rotated sequence is then mapped to a resource block allocated for PSFCH transmission. PSFCH resources can be configured to appear in every time slot, every two time slots, and every four time slots in the resource pool.

[0003] Since PSFCH resources can be configured to appear in every slot, every two slots, or every four slots in a resource pool, if interlace transmission is used for PSFCH, a resource pool can have a maximum of 10 PSFCH resources per slot. Considering that PSFCH only carries one bit of sidelink HARQ feedback, such scarce PSFCH resources are insufficient to carry HARQ feedback for PSSCH transmissions, which may result in delayed HARQ feedback transmission.

[0004] Therefore, it is necessary to propose a solution to improve the HARQ carrying capacity on PSFCH resources.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0006] The main purpose of this application is to provide a codebook determination method, communication equipment and storage medium, aiming to improve the HARQ carrying capacity on PSFCH resources.

[0007] To achieve the above objectives, the present application provides a codebook determination method, which can be applied to a terminal device (such as a mobile phone), comprising the following steps:

[0008] S1: Select or determine a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0009] S2: Select or determine a hybrid automatic repeat request codebook based on the candidate physical sidelink data channel reception opportunity set.

[0010] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot of the associated physical uplink control channel and / or physical uplink data channel, and the channel occupancy time.

[0011] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0012] Optionally, step S1 includes at least one of the following:

[0013] Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel;

[0014] Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities between two adjacent physical side link feedback channel transmission opportunities;

[0015] Selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot where the associated physical uplink control channel and / or physical uplink data channel is located;

[0016] The candidate physical side link data channel reception opportunity set is selected or determined according to the physical side link data channel reception opportunity within the channel occupancy time.

[0017] Optionally, the method further comprises at least one of the following:

[0018] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes:

[0019] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set further includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel;

[0020] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set;

[0021] The step of selecting or determining the set of candidate physical side link data channel reception timings based on the physical side link data channel reception timings within the channel occupancy time includes: selecting the physical side link data channel reception timings within the channel occupancy time as the candidate physical side link data channel reception timings, and constituting the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

[0022] Optionally, step S2 includes:

[0023] The hybrid automatic repeat request codebook is selected or determined based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

[0024] Optionally, step S2 further includes at least one of the following:

[0025] Selecting or determining the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel reception opportunity set;

[0026] generating corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook;

[0027] An order of the mixed automatic repeat request information bits is determined based on an order of the candidate physical sidelink data channel reception opportunities.

[0028] Optionally, step S2 further includes at least one of the following:

[0029] If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback;

[0030] If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0031] The present application also provides a codebook determination method, which can be applied to a terminal device (such as a mobile phone) and / or a network device (such as a base station), comprising the following steps:

[0032] Control information is sent so that the terminal device determines first preset content based on the control information, where the first preset content is used to select or determine a hybrid automatic repeat request codebook.

[0033] Optionally, the step of selecting or determining a hybrid automatic repeat request codebook according to the first preset content is:

[0034] S1: The terminal device selects or determines a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0035] S2: The terminal device selects or determines a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set.

[0036] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot of the associated physical uplink control channel and / or physical uplink data channel, and the channel occupancy time.

[0037] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0038] Optionally, step S1 includes at least one of the following:

[0039] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel;

[0040] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities between two adjacent physical side link feedback channel transmission opportunities;

[0041] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located;

[0042] The terminal device selects or determines the candidate physical side link data channel reception opportunity set based on the physical side link data channel reception opportunity within the channel occupancy time.

[0043] Optionally, the method further comprises at least one of the following:

[0044] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes:

[0045] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set further includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel;

[0046] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set;

[0047] The step of selecting or determining the set of candidate physical side link data channel reception timings based on the physical side link data channel reception timings within the channel occupancy time includes: selecting the physical side link data channel reception timings within the channel occupancy time as the candidate physical side link data channel reception timings, and constituting the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

[0048] Optionally, step S2 includes:

[0049] The terminal device selects or determines the hybrid automatic repeat request codebook based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or the second preset content.

[0050] Optionally, step S2 further includes at least one of the following:

[0051] The terminal device selects or determines the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel reception opportunity set;

[0052] The terminal device generates corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook;

[0053] The terminal device determines the order of the mixed automatic repeat request information bits based on the order of the candidate physical side link data channel reception opportunities.

[0054] Optionally, step S2 further includes at least one of the following:

[0055] If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback;

[0056] If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0057] The present application also provides a communication device, comprising: a memory, a processor, and a codebook determination program stored in the memory and executable on the processor, wherein the codebook determination program implements the steps of any of the above codebook determination methods when executed by the processor.

[0058] 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.

[0059] The present application also provides a storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any of the above codebook determination methods are implemented.

[0060] The present application selects or determines a candidate physical side link data channel reception opportunity set based on a first preset content; selects or determines a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set, thereby improving the HARQ carrying capacity on the PSFCH resource, thereby ensuring the timely transmission of HARQ feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] 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.

[0062] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0063] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0064] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0065] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0066] FIG5 is a schematic flow chart of a codebook determination method according to the first embodiment;

[0067] FIG6 is a schematic flow chart of a codebook determination method according to a second embodiment;

[0068] FIG7 is a schematic flow chart of a codebook determination method according to a third embodiment;

[0069] FIG8 is a schematic flow chart of a codebook determination method according to a fourth embodiment;

[0070] FIG9 is a schematic diagram showing a first exemplary principle of a codebook determination method according to a sixth embodiment;

[0071] FIG10 is a schematic diagram showing a second exemplary principle of a codebook determination method according to the sixth embodiment;

[0072] FIG11 is a schematic diagram showing a first exemplary principle of a codebook determination method according to the seventh embodiment;

[0073] FIG12 is a schematic diagram showing a first exemplary principle of a codebook determination method according to an eighth embodiment;

[0074] FIG13 is a first structural diagram of a codebook determination device according to an embodiment of the present application;

[0075] FIG14 is a second structural diagram of a codebook determination device provided in an embodiment of the present application;

[0076] FIG15 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0077] 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.

[0078] Implementation Methods of the Application

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] It should be noted that in this article, step codes such as S1 and S2 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 S2 first and then S1, etc., but these should all be within the scope of protection of this application.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0091] 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 Access2000), 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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 NR (New Radio) system of universal mobile communication technology. The NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.

[0106] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0107] 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 .

[0108] 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).

[0109] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0110] 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.

[0111] FIG3 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. The implementation principles and beneficial effects are similar and will not be repeated here.

[0112] Optionally, the controller further 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.

[0113] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. Network node 150 includes: a memory 1501 and a processor 1502. Memory 1501 is used to store program instructions, and processor 1502 is used to call the program instructions in memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0114] Optionally, the controller further 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.

[0115] 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.

[0116] 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 storage medium or transmitted from one storage medium to another storage medium. For example, the computer instructions can be transmitted from a 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 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.

[0117] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0118] First embodiment

[0119] 5 , which is a flow chart of a codebook determination 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). The codebook determination method includes the following steps:

[0120] S1: Select or determine a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0121] In an embodiment of the present application, the entirety of the HARQ-ACK information fed back by the terminal device on an automatic repeat request (Hybrid Acknowledgment Request, HARQ) feedback resource (PSFCH channel) is called a HARQ-ACK codebook, that is, a hybrid automatic repeat request codebook. The process of the terminal performing HARQ-ACK feedback for the side link transmission data mainly includes PSSCH data transmission with corresponding PSCCH scheduling and PSSCH data transmission with SL configured grant without corresponding PSCCH scheduling. The candidate physical side link data channel reception timing is determined according to the physical side link feedback channel period, the physical side link feedback channel transmission timing and at least one of the time slots in which the associated physical uplink control channel and / or physical uplink data channel are located. At least one of the candidate physical side link data channel reception timing constitutes a candidate physical side link data channel reception timing set, and the candidate physical side link data channel reception timing set is used to determine the HARQ codebook.

[0122] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot of the associated physical uplink control channel and / or physical uplink data channel, and the channel occupancy time.

[0123] Optionally, the candidate physical side link data channel reception opportunity set includes at least one physical side link data channel reception opportunity within at least one of the physical side link feedback channel cycles.

[0124] Optionally, if the original HARQ codebook cannot be sent on the candidate physical side link feedback channel within the current physical side link feedback channel cycle, the candidate physical side link data channel reception opportunity set includes at least the candidate physical side link data channel reception opportunity within the next physical side link feedback channel cycle.

[0125] Optionally, the candidate physical side link data channel reception opportunity set includes at least one physical side link data channel reception opportunity between two adjacent physical side link feedback channel transmission opportunities.

[0126] Optionally, if the original HARQ codebook cannot be sent at the current physical side link feedback channel sending opportunity, the candidate physical side link data channel receiving opportunity continues to be added to the candidate physical side link data channel receiving opportunity set, and the physical side link feedback channel sending opportunity is after the current physical side link feedback channel sending opportunity and before the next physical side link feedback channel sending opportunity, that is, the candidate physical side link data channel receiving opportunity set includes at least one or more candidate physical side link data channel receiving opportunities before the next physical side link feedback channel sending opportunity.

[0127] Optionally, the sending timing of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, where the higher layer signaling configuration includes at least one of RRC signaling and sidelink RRC signaling.

[0128] Optionally, the sending timing of the physical sidelink feedback channel may be determined by a control information indication, where the control information includes at least one of sidelink control information and downlink control information.

[0129] Optionally, the physical side link feedback channel transmission timing may be determined by a combination of higher-layer signaling configuration and control information indication. For example, higher-layer signaling configures a candidate physical side link feedback channel transmission timing, and control information indicates whether the candidate physical side link feedback channel transmission timing is valid. The terminal may transmit the physical side link feedback channel at a valid candidate physical side link feedback channel transmission timing.

[0130] Optionally, the period of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, wherein the higher layer signaling configuration includes at least one of RRC signaling and sidelink RRC signaling.

[0131] Optionally, the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located can be determined by at least one of a higher-layer signaling configuration and a downlink control information indication. The associated physical uplink control channel and / or physical uplink data channel refers to a terminal receiving sidelink HARQ information carried on a physical sidelink feedback channel, sending the sidelink HARQ information to the base station on the physical uplink control channel and / or physical uplink data channel.

[0132] Optionally, the channel occupancy time may be determined by at least one of a sidelink high-layer signaling configuration and a sidelink downlink control information indication.

[0133] Optionally, if the sending timing of the physical side link feedback channel is after the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set is reset; if the sending timing of the physical side link feedback channel is before the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set does not need to be reset.

[0134] Optionally, if the sending timing of the physical side link feedback channel is after the n time slots preceding the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set is reset; if the sending timing of the physical side link feedback channel is before the n time slots preceding the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set does not need to be reset.

[0135] Optionally, resetting the candidate physical side link data channel reception opportunity set is to delete elements in the candidate physical side link data channel reception opportunity set, and the candidate physical side link data channel reception opportunity set becomes an empty set.

[0136] Optionally, the candidate physical side link data channel reception opportunity set is determined according to the candidate physical side link data channel reception opportunities within the channel occupation time (COT).

[0137] Optionally, the physical sidelink data channel (PSSCH), the physical sidelink control channel (PSCCH), and the physical sidelink feedback channel belong to a resource pool (Resource pool), and the resource pool can be configured through high-layer signaling or obtained through pre-configuration.

[0138] Optionally, the physical uplink control channel (PUCCH) / physical uplink data channel (PUSCH) may be indicated by at least one of higher layer signaling configuration and downlink control information.

[0139] Optionally, the channel occupancy time may be determined by at least one of a sidelink high-layer signaling configuration and a sidelink downlink control information indication.

[0140] S2: Select or determine a hybrid automatic repeat request codebook based on the candidate physical sidelink data channel reception opportunity set.

[0141] In an embodiment of the present application, the hybrid automatic repeat request codebook is selected or determined based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

[0142] Optionally, the second preset content includes at least one of the following: the number of radio resource control configured cells, a hybrid automatic repeat request space bundling parameter, a code block group configuration parameter and / or a maximum codeword parameter supported by each cell.

[0143] Optionally, the size of the hybrid automatic repeat request codebook can be determined according to the size of the candidate physical side link data channel reception opportunity set, and corresponding hybrid automatic repeat request information bits are generated based on the candidate physical side link data channel reception opportunity in the candidate physical side link data channel reception opportunity set to constitute the hybrid automatic repeat request codebook, and the order of the hybrid automatic repeat request information bits is determined based on the order of the candidate physical side link data channel reception opportunity.

[0144] Optionally, the candidate physical side link data channel reception timings in the candidate physical side link data channel reception timing set correspond one-to-one to the elements in the HARQ codebook.

[0145] Optionally, if there is no physical side link data channel associated with the physical side link feedback channel within the candidate physical side link data channel reception opportunity, the corresponding position in the HARQ codebook is set to NACK; if there is a physical side link data channel associated with the physical side link feedback channel within the candidate physical side link data channel reception opportunity, the corresponding position in the HARQ codebook is set to ACK or NACK.

[0146] Optionally, the terminal device is a receiving terminal device in side link communication, receives a physical side link control channel and / or a physical side link data channel, and sends a physical side link feedback channel based on the reception result of the physical side link data channel.

[0147] This embodiment uses the above scheme to specifically select or determine a candidate physical side link data channel reception opportunity set based on the first preset content; select or determine a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set, thereby improving the HARQ carrying capacity on the PSFCH resource, thereby ensuring the timely transmission of HARQ feedback.

[0148] Second embodiment

[0149] Based on the first embodiment of the present application, this embodiment discloses a specific method for selecting or determining a candidate physical sidelink data channel reception opportunity set based on first preset content in step S1. Referring to FIG. 6 , FIG. 6 is a flow chart illustrating a codebook determination method according to a second embodiment, showing that the specific steps of step S1 include at least one of the following:

[0150] S11: selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel;

[0151] Optionally, the step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes:

[0152] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the period of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set also includes one or more physical side link data channel reception opportunities within the period of the next physical side link feedback channel.

[0153] Optionally, the first preset condition includes: sending a HARQ codebook on a candidate physical side link feedback channel within a period of the current physical side link feedback channel.

[0154] Optionally, the second preset condition includes: not sending the HARQ codebook on the candidate physical side link feedback channel within the period of the current physical side link feedback channel.

[0155] Optionally, the codebook size is determined based on the PSFCH (Physical Sidelink Feedback Channel) period. Assuming the PSFCH period is 4 time slots, the time slots in which the PSFCH is located are m, m+4, ..., m+4i. Assuming the minimum interval between the PSSCH (Physical Sidelink Share Channel) and the PSFCH is 2 time slots, the corresponding PSSCH transmission timing corresponding to the PSFCH transmission timing in time slot m is time slot m-2, time slot m-3, time slot m-4, and time slot m-5. For example, the PSSCH corresponding to time slot m-6 corresponds to time slot (m-4)-2, that is, the PSFCH transmission timing of time slot (m-4). The codebook size is determined based on the PSFCH period.

[0156] Optionally, if the PSFCH carrying the HARQ codebook is on the first candidate PSFCH transmission opportunity, that is, the first preset condition is met, the size of the HARQ codebook is equal to the size of the PSFCH cycle.

[0157] Optionally, if the PSFCH carrying the HARQ codebook fails LBT on the candidate's first PSFCH transmission opportunity and is not sent, that is, the second preset condition is met, if the PSFCH carrying the HARQ codebook is on the Nth PSFCH transmission opportunity, the size of the HARQ codebook is equal to the size of the N*PSFCH period, or the maximum limit of the codebook is increased.

[0158] S12: Selecting or determining the candidate physical side link data channel receiving opportunity set according to one or more physical side link data channel receiving opportunities between two adjacent physical side link feedback channel sending opportunities;

[0159] Optionally, the step of selecting or determining the candidate physical side link data channel receiving opportunity set according to the sending opportunity of the physical side link feedback channel includes:

[0160] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes at least one physical side link data channel reception opportunity between two adjacent physical side link feedback channel transmission opportunities. And / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set includes at least one or more candidate physical side link data channel reception opportunities before the next physical side link feedback channel transmission opportunity; that is, candidate physical side link data channel reception opportunities continue to be added to the candidate physical side link data channel reception opportunity set, and the physical side link feedback channel transmission opportunity is after the current physical side link feedback channel transmission opportunity and before the next physical side link feedback channel transmission opportunity.

[0161] Optionally, the two adjacent physical side link feedback channel sending opportunities include a physical side link feedback channel sending opportunity currently used to send PSFCH and a previous physical side link feedback channel sending opportunity.

[0162] Optionally, the first preset condition includes: sending a HARQ codebook on the physical side link feedback channel at the sending timing of the current candidate physical side link feedback channel.

[0163] Optionally, the second preset condition includes: not sending the HARQ codebook on the physical side link feedback channel at the sending timing of the current candidate physical side link feedback channel.

[0164] S13: Select or determine the candidate physical side link data channel receiving opportunity set according to the sending opportunity of the physical side link feedback channel and the time slot where the associated physical uplink control channel and / or physical uplink data channel is located;

[0165] Optionally, the step of selecting or determining the candidate physical side link data channel receiving timing set based on the sending timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or physical uplink data channel are located includes: if the sending timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel receiving timing set; if the sending timing of the physical side link feedback channel is before the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, the candidate physical side link data channel receiving timing set does not need to be reset.

[0166] Optionally, if the sending timing of the physical side link feedback channel is after n time slots preceding the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set is reset; if the sending timing of the physical side link feedback channel is before n time slots preceding the time slot where the associated physical uplink control channel and / or the physical uplink data channel is located, the candidate physical side link data channel receiving timing set does not need to be reset.

[0167] Optionally, resetting the candidate physical side link data channel reception opportunity set is to delete elements in the candidate physical side link data channel reception opportunity set, and the candidate physical side link data channel reception opportunity set becomes an empty set.

[0168] Optionally, the codebook size is determined based on the PSFCH period and the K set associated with sl-PSFCH-ToPUCCH or sl-PSFCH-ToPUCCH-CG-Type1. If the PUCCH transmission time slot is j1, j2, j3, etc., and its associated PSFCH transmission opportunity is m, m+4,......., m+4i, it must satisfy the following: m+k1=j1; m+4+k2=j1, etc. Therefore, if the PSFCH carried in the SL-HARQ codebook in time slot m is the Nth PSFCH transmission opportunity, the size of the SL-HARQ codebook is N*PSFCH period. If m+k1=j1, the PSFCH transmission is abandoned and the size of the SL-HARQ codebook is reset.

[0169] S14: Select or determine the candidate physical side link data channel reception opportunity set according to the physical side link data channel reception opportunity within the channel occupancy time.

[0170] Optionally, the step of selecting or determining the candidate physical side link data channel reception timing set based on the physical side link data channel reception timing within the channel occupancy time includes: selecting the physical side link data channel reception timing within the channel occupancy time as the candidate physical side link data channel reception timing, and constituting the candidate physical side link data channel reception timing set based on the candidate physical side link data channel reception timing.

[0171] Optionally, after preliminarily determining a set of candidate physical side link data channel reception timings based on one or more physical side link data channel reception timings within the period of the physical side link feedback channel, further select the physical side link data channel reception timings within one or more of the channel occupancy times (COT, Channel Occupancy Time) in the preliminarily determined set of candidate physical side link data channel reception timings as candidate physical side link data channel reception timings, and constitute the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

[0172] Optionally, if the HARQ codebook cannot be sent on the candidate physical side link feedback channel within the current physical side link feedback channel cycle, the candidate physical side link data channel reception opportunity set includes at least the candidate physical side link data channel reception opportunity within the next physical side link feedback channel cycle, and the physical side link data channel reception opportunity belonging to one or more COTs is selected as the candidate physical side link data channel reception opportunity, and the candidate physical side link data channel reception opportunity set is formed based on the candidate physical side link data channel reception opportunity.

[0173] Optionally, if the HARQ codebook cannot be sent on the physical side link feedback channel at the sending timing of the current candidate physical side link feedback channel, the candidate physical side link data channel reception opportunity set includes at least one or more candidate physical side link data channel reception opportunities before the next physical side link feedback channel sending opportunity, and the physical side link data channel reception opportunities belonging to one or more COTs are selected as candidate physical side link data channel reception opportunities, and the candidate physical side link data channel reception opportunity set is formed based on the candidate physical side link data channel reception opportunities.

[0174] Optionally, if the sending timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel is located, the preliminarily determined candidate physical side link data channel receiving timing set is reset, and the physical side link data channel receiving timing belonging to the COT is used as the candidate physical side link data channel receiving timing, and the candidate physical side link data channel receiving timing set is formed based on the candidate physical side link data channel receiving timing.

[0175] Optionally, if the sending timing of the physical side link feedback channel is after n time slots before the time slot in which the associated physical uplink control channel and / or the physical uplink data channel is located, the preliminarily determined candidate physical side link data channel receiving timing set is reset, and the physical side link data channel receiving timing belonging to the COT is used as the candidate physical side link data channel receiving timing, and the candidate physical side link data channel receiving timing set is formed based on the candidate physical side link data channel receiving timing.

[0176] Optionally, the physical sidelink data channel (PSSCH), the physical sidelink control channel (PSCCH), and the physical sidelink feedback channel belong to a resource pool (Resource pool), and the resource pool can be configured through high-layer signaling or obtained through pre-configuration.

[0177] Optionally, the physical uplink control channel (PUCCH) / physical uplink data channel (PUSCH) may be indicated by at least one of higher layer signaling configuration and downlink control information.

[0178] Optionally, the channel occupancy time may be determined by at least one of a sidelink high-layer signaling configuration and a sidelink downlink control information indication.

[0179] In an embodiment of the present application, the candidate physical side link data channel reception opportunity set is selected or determined based on one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel; and / or, the candidate physical side link data channel reception opportunity set is selected or determined based on the transmission opportunity of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or physical uplink data channel are located; and / or, the candidate physical side link data channel reception opportunity set is selected or determined based on the physical side link data channel reception opportunity within the channel occupancy time. The candidate physical side link data channel reception opportunity set is selected or determined in a variety of ways, and then a hybrid automatic repeat request codebook is determined based on the candidate physical side link data channel reception opportunity set, thereby improving the HARQ carrying capacity on the PSFCH resource and ensuring the timely transmission of HARQ feedback.

[0180] Third embodiment

[0181] Based on the first and second embodiments of the present application, this embodiment discloses a specific method for selecting or determining a hybrid automatic repeat request codebook based on the candidate physical sidelink data channel reception opportunity set in step S2. Referring to FIG. 7 , FIG. 7 is a flow chart illustrating a codebook determination method according to a third embodiment, showing that the specific steps of step S2 include at least one of the following:

[0182] S21: Selecting or determining the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel receiving opportunity set;

[0183] In an embodiment of the present application, a hybrid automatic repeat request codebook is selected or determined based on the obtained candidate physical side link data channel reception opportunity set of each cell and / or the second preset content, wherein the second preset content includes one or more of the number of cells configured by RRC, HARQ space bundling parameters, CBG configuration parameters, and the maximum codeword (Codeword) parameter supported by each cell.

[0184] Optionally, the size of the codebook is determined according to the PSFCH period. If the PSFCH carrying the HARQ codebook is on the first PSFCH transmission opportunity of the candidate, the HARQ codebook is equal to the period of the PSFCH; if the PSFCH carrying the HARQ codebook fails LBT on the first PSFCH transmission opportunity of the candidate and is not sent: if the PSFCH carrying the HARQ codebook is on the Nth PSFCH transmission opportunity, the HARQ codebook is equal to the period of N*PSFCH, or the maximum limit of the codebook is increased.

[0185] Optionally, the size of the codebook is determined according to the PSFCH period and the K set associated with sl-PSFCH-ToPUCCH or sl-PSFCH-ToPUCCH-CG-Type1.

[0186] S22: Generate corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook;

[0187] Optionally, at a PSFCH opportunity, PSSCHs from different transmitting terminals correspond to different PSFCH resources, different PSFCH resources carry different HARQ codebooks, and the receiving terminal generates a codebook for each determined PSFCH resource.

[0188] Optionally, each cell generates corresponding HARQ-ACK information bits according to each candidate PSSCH reception timing in the candidate PSSCH reception timing set MA,c in turn, and the candidate PSSCH reception timing set MA,c includes J elements, where J is a positive integer greater than or equal to 1, and c is the cell identifier.

[0189] S23: Determine the order of the hybrid automatic repeat request information bits based on the order of the candidate physical side link data channel reception opportunities.

[0190] Optionally, if the PSSCH channel supports a maximum of two layers of transmission, the first HARQ-ACK information corresponding to the first transport block (TB) that may be carried on the first candidate PSSCH reception opportunity is placed in the first position of the codebook; the second HARQ-ACK information corresponding to the second transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the second position of the codebook. And so on, until the 2*Jth HARQ-ACK information corresponding to the second transport block that may be carried on the last candidate PSSCH reception opportunity is placed in the 2*Jth position of the codebook.

[0191] Optionally, if the PSSCH channel supports a maximum of two layers of transmission and supports spatial division multiplexing of HARQ-ACK information, the first HARQ-ACK information corresponding to the first transport block that may be carried on the first candidate PSSCH reception opportunity and the second HARQ-ACK information corresponding to the second transport block are ANDed (ie, the first HARQ-ACK information and the second second HARQ-ACK information are logically multiplied), and the result is placed at the first position of the codebook. This is repeated until the first HARQ-ACK information corresponding to the first transport block that may be carried on the last candidate PSSCH reception opportunity and the second HARQ-ACK information corresponding to the second transport block are ANDed, and the result is placed at the Jth position of the codebook.

[0192] Optionally, if the PSSCH channel supports CBG (Code Block Group, code block group) transmission and the maximum number of code blocks of one transport block is M, then the first HARQ-ACK information corresponding to the first code block group of the first transport block (Transport Block, TB) that may be carried on the first candidate PSSCH reception opportunity is placed in the first position of the codebook; the second HARQ-ACK information corresponding to the second code block group of the first transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the second position of the codebook; ..., the Mth HARQ-ACK information corresponding to the Mth code block group of the first transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the Mth position of the codebook, and so on, until the M*Jth HARQ-ACK information corresponding to the Mth code block group of the first transport block that may be carried on the last candidate PSSCH reception opportunity is placed in the M*Jth position of the codebook.

[0193] Optionally, step S2 further includes at least one of the following:

[0194] If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback;

[0195] If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0196] Optionally, for a determined PSFCH resource, if there is no PSSCH transmission for the PSFCH in the associated PSSCH time slot, the receiving terminal sets a negative feedback (NACK) at the corresponding position in the HARQ codebook;

[0197] Optionally, for a determined PSFCH resource, if there is a PSSCH transmission for the PSFCH in the associated PSSCH time slot, the receiving terminal sets positive feedback (ACK) or negative feedback (NACK) at the corresponding position in the HARQ codebook according to decoding and CRC check results.

[0198] In an embodiment of the present application, the size of the hybrid automatic repeat request codebook is selected or determined based on the size of the candidate physical side link data channel reception opportunity set; corresponding hybrid automatic repeat request information bits are generated based on the candidate physical side link data channel reception opportunity to form the hybrid automatic repeat request codebook; and the order of the hybrid automatic repeat request information bits is determined based on the order of the candidate physical side link data channel reception opportunity. A method for determining the hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set in various situations is provided, thereby improving the HARQ carrying capacity on the PSFCH resource and ensuring the timely transmission of HARQ feedback.

[0199] Fourth embodiment

[0200] 8 is a flow chart of a method for determining a codebook according to a fourth embodiment. The method of the embodiment of the present application can be applied to a network device (such as a base station). The method for determining a codebook includes the following steps:

[0201] S0: Sending control information so that the terminal device determines first preset content based on the control information, where the first preset content is used to select or determine a hybrid automatic repeat request codebook.

[0202] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel; the time slot where the associated physical uplink control channel and / or physical uplink data channel is located; and the channel occupancy time.

[0203] Optionally, the control information includes at least one of RRC signaling and downlink control information.

[0204] Optionally, the sending timing of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, where the higher layer signaling configuration includes at least one of RRC signaling and sidelink RRC signaling.

[0205] Optionally, the sending timing of the physical sidelink feedback channel may be determined by a control information indication, where the control information includes at least one of sidelink control information and downlink control information.

[0206] Optionally, the period and / or transmission timing of the physical side link feedback channel may be determined by a joint indication of a higher-layer signaling configuration and a control information indication. For example, higher-layer signaling configures the period and / or transmission timing of a candidate physical side link feedback channel, and the control information indicates whether the period and / or transmission timing of the candidate physical side link feedback channel is valid. The terminal may transmit the physical side link feedback channel at a valid candidate physical side link feedback channel transmission timing, and / or the terminal may transmit the physical side link feedback channel at a candidate physical side link feedback channel transmission timing within a valid candidate physical side link feedback channel period.

[0207] Optionally, the period of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, wherein the higher layer signaling configuration includes at least one of RRC signaling and sidelink RRC signaling.

[0208] Optionally, the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located can be determined by at least one of a higher-layer signaling configuration and a downlink control information indication. The associated physical uplink control channel and / or physical uplink data channel refers to a terminal receiving sidelink HARQ information carried on a physical sidelink feedback channel, sending the sidelink HARQ information to the base station on the physical uplink control channel and / or physical uplink data channel.

[0209] Optionally, the channel occupancy time may be determined by at least one of a sidelink high-layer signaling configuration and a sidelink downlink control information indication.

[0210] Optionally, the step of selecting or determining a hybrid automatic repeat request codebook according to the first preset content is:

[0211] S1: The terminal device selects or determines a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0212] S2: The terminal device selects or determines a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set.

[0213] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0214] Optionally, step S1 includes at least one of the following:

[0215] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel;

[0216] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel, including: selecting or determining the candidate physical side link data channel reception opportunity set according to at least one physical side link data channel reception opportunity between two adjacent physical side link feedback channel transmission opportunities;

[0217] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located;

[0218] The terminal device selects or determines the candidate physical side link data channel reception opportunity set based on the physical side link data channel reception opportunity within the channel occupancy time.

[0219] Optionally, the step of selecting or determining the candidate physical side link data channel reception opportunity set based on one or more physical side link data channel reception opportunities within the cycle of the physical side link feedback channel includes: if a first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if a second preset condition is met, the candidate physical side link data channel reception opportunity set also includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel;

[0220] Optionally, the step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set;

[0221] Optionally, the step of selecting or determining the candidate physical side link data channel reception timing set based on the physical side link data channel reception timing within the channel occupancy time includes: selecting the physical side link data channel reception timing within the channel occupancy time as the candidate physical side link data channel reception timing, and constituting the candidate physical side link data channel reception timing set based on the candidate physical side link data channel reception timing.

[0222] Optionally, step S2 includes: the terminal device selects or determines the hybrid automatic repeat request codebook based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

[0223] Optionally, the S2 step includes at least one of the following: the terminal device selects or determines the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel receiving opportunity set; the terminal device generates corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel receiving opportunity to constitute the hybrid automatic repeat request codebook; the terminal device determines the order of the hybrid automatic repeat request information bits based on the order of the candidate physical side link data channel receiving opportunity.

[0224] Optionally, step S2 also includes at least one of the following items: if the candidate physical side link data channel reception opportunity does not include the physical side link data channel associated with the physical side link feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback; if the candidate physical side link data channel reception opportunity includes the physical side link data channel associated with the physical side link feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0225] The embodiment of the present application adopts the above-mentioned scheme, specifically by sending control information, so that the terminal device determines the first preset content based on the control information, and the first preset content is used to select or determine the hybrid automatic repeat request codebook, thereby improving the HARQ carrying capacity on the PSFCH resource, thereby ensuring that the HARQ feedback can be transmitted in a timely manner.

[0226] Fifth embodiment

[0227] 8 , the codebook determination method shown in FIG8 can also be applied to a terminal device (such as a mobile phone), where the terminal device serves as a sending terminal device. The codebook determination method includes the following steps:

[0228] S0: Sending control information so that the terminal device determines first preset content based on the control information, where the first preset content is used to select or determine a hybrid automatic repeat request codebook.

[0229] Optionally, the first preset content includes at least one of the following: a physical side link data channel; a period and / or sending timing of a physical side link feedback channel; and a channel occupancy time.

[0230] Optionally, the control information includes at least one of side link RRC signaling and side link control information.

[0231] Optionally, the sending timing of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, where the higher layer signaling configuration includes sidelink RRC signaling.

[0232] Optionally, the sending timing of the physical sidelink feedback channel may be determined by control information indication, where the control information includes sidelink control information.

[0233] Optionally, the period and / or transmission timing of the physical side link feedback channel may be determined by a joint indication of a higher-layer signaling configuration and a control information indication. For example, higher-layer signaling configures the period and / or transmission timing of a candidate physical side link feedback channel, and the control information indicates whether the period and / or transmission timing of the candidate physical side link feedback channel is valid. The terminal may transmit the physical side link feedback channel at a valid candidate physical side link feedback channel transmission timing, and / or the terminal may transmit the physical side link feedback channel at a candidate physical side link feedback channel transmission timing within a valid candidate physical side link feedback channel period.

[0234] Optionally, the period of the physical sidelink feedback channel may be determined by a higher layer signaling configuration, wherein the higher layer signaling configuration includes sidelink RRC signaling.

[0235] Optionally, the physical sidelink data channel can be determined by at least one of sidelink RRC signaling and sidelink control information.

[0236] Optionally, the channel occupancy time may be determined by at least one of a sidelink high-layer signaling configuration and a sidelink downlink control information indication.

[0237] Optionally, the step of selecting or determining a hybrid automatic repeat request codebook according to the first preset content is:

[0238] S1: The terminal device selects or determines a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0239] S2: The terminal device selects or determines a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set.

[0240] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0241] Optionally, step S1 includes at least one of the following:

[0242] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel;

[0243] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel, including: selecting or determining the candidate physical side link data channel reception opportunity set according to at least one physical side link data channel reception opportunity between two adjacent physical side link feedback channel transmission opportunities;

[0244] The terminal device selects or determines the candidate physical side link data channel reception opportunity set based on the physical side link data channel reception opportunity within the channel occupancy time.

[0245] Optionally, the step of selecting or determining the candidate physical side link data channel receiving opportunity set based on one or more physical side link data channel receiving opportunities within the period of the physical side link feedback channel includes: if a first preset condition is met, the candidate physical side link data channel receiving opportunity set includes one or more physical side link data channel receiving opportunities within the period of the current physical side link feedback channel, and / or, if a second preset condition is met, the candidate physical side link data channel receiving opportunity set also includes one or more physical side link data channel receiving opportunities within the period of the next physical side link feedback channel.

[0246] Optionally, the step of selecting or determining the candidate physical side link data channel reception timing set based on the physical side link data channel reception timing within the channel occupancy time includes: selecting the physical side link data channel reception timing within the channel occupancy time as the candidate physical side link data channel reception timing, and constituting the candidate physical side link data channel reception timing set based on the candidate physical side link data channel reception timing.

[0247] Optionally, step S2 includes: the terminal device selects or determines the hybrid automatic repeat request codebook based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

[0248] Optionally, the S2 step includes at least one of the following: the terminal device selects or determines the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel receiving opportunity set; the terminal device generates corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel receiving opportunity to constitute the hybrid automatic repeat request codebook; the terminal device determines the order of the hybrid automatic repeat request information bits based on the order of the candidate physical side link data channel receiving opportunity.

[0249] Optionally, step S2 also includes at least one of the following items: if the candidate physical side link data channel reception opportunity does not include the physical side link data channel associated with the physical side link feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback; if the candidate physical side link data channel reception opportunity includes the physical side link data channel associated with the physical side link feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0250] Optionally, the terminal device is a transmitting terminal device in side link communication, sending a physical side link control channel and / or a physical side link data channel, and receiving a corresponding physical side link feedback channel.

[0251] Optionally, the terminal device is a transmitting terminal device in side link communication, and sends a HARQ codebook to the base station according to the side link HARQ information carried on the received corresponding physical side link feedback channel.

[0252] The embodiment of the present application adopts the above-mentioned scheme, specifically by sending control information, so that the terminal device determines the first preset content based on the control information, and the first preset content is used to select or determine the hybrid automatic repeat request codebook, thereby improving the HARQ carrying capacity on the PSFCH resource, thereby ensuring that the HARQ feedback can be transmitted in a timely manner.

[0253] Sixth embodiment

[0254] Based on the above embodiments of the present application, this embodiment further discloses the codebook determination method in the above embodiments.

[0255] In the embodiment of the present application, the entirety of the HARQ-ACK information fed back by the terminal on a HARQ feedback resource (PSFCH channel) is called a HARQ-ACK codebook. The terminal performs HARQ-ACK feedback for at least the following types of sidelink transmission data.

[0256] (1) Indicates that there is PSSCH data transmission scheduled by the corresponding PSCCH.

[0257] (2) Indicates PSSCH data transmission without corresponding SL configured grant scheduled by PSCCH.

[0258] Optionally, the codebook refers to a HARQ-ACK codebook generation method in which the HARQ-ACK codebook size does not dynamically change with the actual data scheduling situation. In this method, the HARQ-ACK codebook size is determined according to predefined or RRC configured parameters.

[0259] Optionally, for feedback of a semi-static codebook on a PSFCH, generation of a HARQ-ACK codebook is divided into the following two steps.

[0260] Step 1: For a specific HARQ-ACK feedback time unit, i.e., the first type time slot n, the set of all sidelink data transmissions that require HARQ-ACK feedback (including the above two types of PSSCH, collectively referred to as candidate PSSCH reception opportunities) corresponding to the activated sidelink BWP in each serving cell. This set of candidate PSSCH reception opportunities is denoted as MA,c. MA,c is determined based on the following parameters. The first type time slot is a logical time slot, i.e., a time slot contained in a resource pool.

[0261] The PSFCH channel period in the resource pool associated with the activated sidelink BWP.

[0262] 9 , which is a schematic diagram of a first example principle of a codebook determination method according to a sixth embodiment. As shown in FIG9 , assuming that the PSFCH period is 4 time slots, the first type of time slots where the PSFCH is located are n, n+4,......., n+4i.

[0263] Assuming the minimum interval between PSSCH and PSFCH is 2 time slots, the corresponding PSSCH transmission opportunities in Type-1 time slot n are Type-1 time slot n-2, Type-1 time slot n-3, Type-1 time slot n-4, and Type-1 time slot n-5. (The PSSCH corresponding to Type-1 time slot n-6 corresponds to Type-1 time slot (n-4)-2, i.e., the PSFCH transmission opportunity of Type-1 time slot (n-4)). In this case, MA,c = {2, 3, 4, 5}.

[0264] Referring to Figure 10, Figure 10 is a schematic diagram of the second exemplary principle of the codebook determination method according to the sixth embodiment. As shown in Figure 10, if the PSFCH carrying the HARQ codebook is not sent due to LBT failure on the first candidate PSFCH transmission opportunity, the unsent HARQ-ACK continues to accumulate. If the PSFCH carrying the HARQ codebook fails to be sent on the first N-1 PSFCH transmission opportunities, then at the Nth PSFCH transmission opportunity, corresponding to the Nth PSFCH transmission opportunity of the first type time slot n, its corresponding PSSCH transmission is the first type time slot n-2, the first type time slot n-3, the first type time slot n-4, the first type time slot n-5, ..., the first type time slot n-4*(N-1)-5. At this time, MA,c = {2, 3, 4, 5, ..., 4*N+1}. Considering that the codebook should not be too large, the value of N can be determined by RRC configuration.

[0265] Step 2: Determine the HARQ-ACK codebook based on the candidate PSSCH reception opportunity set of each cell obtained in step 1, the number of cells configured by RRC, the HARQ space bundling parameter, the CBG configuration parameter, and at least one of the maximum codeword parameters supported by each cell.

[0266] Each cell generates corresponding HARQ-ACK information bits according to each candidate PSSCH reception opportunity in the candidate PSSCH reception opportunity set MA,c. The candidate PSSCH reception opportunity set MA,c includes J elements, where J is a positive integer greater than or equal to 1 and c is the cell identifier.

[0267] Optionally, if the PSSCH channel supports a maximum of two layers of transmission, the first HARQ-ACK information corresponding to the first transport block (TB) that may be carried on the first candidate PSSCH reception opportunity is placed in the first position of the codebook; the second HARQ-ACK information corresponding to the second transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the second position of the codebook. And so on, until the 2*Jth HARQ-ACK information corresponding to the second transport block that may be carried on the last candidate PSSCH reception opportunity is placed in the 2*Jth position of the codebook.

[0268] Optionally, if the PSSCH channel supports a maximum of two layers of transmission and supports spatial division multiplexing of HARQ-ACK information, the first HARQ-ACK information corresponding to the first transport block that may be carried on the first candidate PSSCH reception opportunity and the second HARQ-ACK information corresponding to the second transport block are ANDed (ie, the first HARQ-ACK information and the second second HARQ-ACK information are logically multiplied), and the result is placed at the first position of the codebook. This is repeated until the first HARQ-ACK information corresponding to the first transport block that may be carried on the last candidate PSSCH reception opportunity and the second HARQ-ACK information corresponding to the second transport block are ANDed, and the result is placed at the Jth position of the codebook.

[0269] Optionally, if the PSSCH channel supports CBG (Code Block Group, code block group) transmission and the maximum number of code blocks of one transport block is M, then the first HARQ-ACK information corresponding to the first code block group of the first transport block (Transport Block, TB) that may be carried on the first candidate PSSCH reception opportunity is placed in the first position of the codebook; the second HARQ-ACK information corresponding to the second code block group of the first transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the second position of the codebook; ..., the Mth HARQ-ACK information corresponding to the Mth code block group of the first transport block that may be carried on the first candidate PSSCH reception opportunity is placed in the Mth position of the codebook, and so on, until the M*Jth HARQ-ACK information corresponding to the Mth code block group of the first transport block that may be carried on the last candidate PSSCH reception opportunity is placed in the M*Jth position of the codebook.

[0270] This embodiment, through the above-mentioned scheme, specifically includes selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel, and continuing to accumulate the unsent HARQ-ACK when the HARQ codebook fails to be sent on the candidate physical side link feedback channel within the current physical side link feedback channel period, to ensure that the HARQ feedback can be transmitted in a timely manner.

[0271] Seventh embodiment

[0272] Based on the above embodiments of the present application, this embodiment further discloses the codebook determination method in the above embodiments.

[0273] In the embodiment of the present application, the entirety of the HARQ-ACK information fed back by the terminal on a HARQ feedback resource (PSFCH channel) is called a HARQ-ACK codebook. The terminal performs HARQ-ACK feedback for at least the following types of sidelink transmission data.

[0274] (1) Indicates that there is PSSCH data transmission scheduled by the corresponding PSCCH.

[0275] (2) Indicates PSSCH data transmission without corresponding SL configured grant scheduled by PSCCH.

[0276] Optionally, the codebook refers to a HARQ-ACK codebook generation method in which the HARQ-ACK codebook size does not dynamically change with the actual data scheduling situation. In this method, the HARQ-ACK codebook size is determined according to predefined or RRC configured parameters.

[0277] Optionally, for feedback of a semi-static codebook on a PSFCH, generation of a HARQ-ACK codebook is divided into the following two steps.

[0278] Step 1: For a specific HARQ-ACK feedback time unit, i.e., the first type time slot n, the set of all sidelink data transmissions that require HARQ-ACK feedback (including the above two types of PSSCH, collectively referred to as candidate PSSCH reception opportunities) corresponding to the activated sidelink BWP in each serving cell. This set of candidate PSSCH reception opportunities is denoted as MA,c. MA,c is determined based on the following parameters. The first type time slot is a logical time slot, i.e., a time slot contained in a resource pool.

[0279] The PSFCH channel period in the resource pool associated with the activated sidelink BWP.

[0280] Assuming that the PSFCH period is 4 time slots, the first type time slots where the PSFCH is located are n, n+4,......., n+4i.

[0281] Optionally, in the K set associated between the PSFCH channel and the PUCCH channel, the K set comes from DCI (Downlink Control Information): sl-PSFCH-ToPUCCH or the higher layer parameter sl-PSFCH-ToPUCCH-CG-Type1.

[0282] Optionally, assuming that the second type time slots for PUCCH transmission are j1, j2, j3, ..., etc., and their associated PSFCH transmission timings are first type time slots n, n+4, ..., n+4i; wherein the second type time slots are actual time slots within the cell and must satisfy: n+k1+delta1=j1; n+4+k2+delta2=j1, etc.

[0283] Optionally, assuming that the minimum interval between PSSCH and PSFCH is 2 time slots, the corresponding PSSCH transmission timing corresponding to the PSFCH in the first type time slot n is the first type time slot n-2, the first type time slot n-3, the first type time slot n-4, and the first type time slot n-5. (The PSSCH corresponding to the first type time slot n-6 corresponds to the first type time slot (n-4)-2, that is, the PSFCH transmission timing of the first type time slot (n-4)). If the PSFCH transmission timing of the first type time slot n plus the K1 value indicated in the DCI plus delta1 is equal to the second type time slot j1, the terminal needs to feedback the side link feedback information of the bearer and PSFCH channel received in the first type time slot n on the PUCCH resource of the second type time slot j1. Similarly, the terminal needs to feedback the side link feedback information of the bearer and PSFCH channel received in the first type time slot n+4 on the PUCCH resource of the second type time slot j1. At this time, n+k1+delta1=j1; n+4+k2+delta2=j1; then MA,c={2, 3, 4, 5}, where delta1 and delta2 are the parameters required for the conversion between the first type of time slot and the second type of time slot.

[0284] Referring to FIG11 , FIG11 is a schematic diagram of a first exemplary principle of a codebook determination method according to the seventh embodiment. As shown in FIG11 , if the PSFCH carrying the HARQ codebook is not transmitted due to LBT failure on the first candidate PSFCH transmission opportunity, the unsent HARQ-ACK continues to accumulate. If the PSFCH carrying the HARQ codebook fails to be transmitted on the N-1th PSFCH transmission opportunity, then on the Nth PSFCH transmission opportunity, corresponding to the Nth PSFCH transmission opportunity of the first type time slot n, its corresponding PSSCH transmission is the first type time slot n-2, the first type time slot n-3, the first type time slot n-4, the first type time slot n-5, ..., the first type time slot n-4*(N-1)-5. If the PSFCH transmission opportunity of the first type time slot n plus the K1 value indicated in the DCI plus delta1 equals the second type time slot j1, that is, the terminal needs to feedback the sidelink feedback information of the bearer and PSFCH channel received in the first type time slot n on the PUCCH resource of the second type time slot j1. Similarly, the terminal needs to feedback the sidelink feedback information of the bearer and PSFCH channel received in the first-type time slot n-4*(N-1)-5 on the PUCCH resource of the second-type time slot j1. In this case, n+k1+delta1=j1; n-4*(N-1)-5+kn+deltan=j1. In this case, MA,c={2, 3, 4, 5, ..., 4*N+1}. Delta1 and deltan are the parameters required for the conversion between the first-type time slot and the second-type time slot.

[0285] As above, the PSFCH carrying the HARQ codebook is at the Nth PSFCH transmission opportunity, which corresponds to the first-type time slot n. If the PSFCH transmission opportunity for the first-type time slot n cannot be met, plus the K1 value indicated in the DCI plus delta1 equals the second-type time slot j1. At this time, the HARQ codebook is reset, that is, MA,c = {}. The transmitting terminal abandons the transmission of the PSFCH carrying the HARQ codebook.

[0286] Step 2: Determine the HARQ-ACK codebook based on the candidate PSSCH reception opportunity set of each cell obtained in step 1, the number of cells configured by RRC, the HARQ space bundling parameter, the CBG configuration parameter, and at least one of the maximum codeword parameters supported by each cell.

[0287] Each cell generates HARQ-ACK information bits for each candidate PSSCH reception opportunity in the candidate PSSCH end timing set MA,c. The candidate PSSCH end timing set MA,c includes J elements, where J is a positive integer greater than or equal to 1 and c is the cell identifier. The specific process can be found in the fifth embodiment above and will not be repeated here.

[0288] This embodiment, through the above-mentioned scheme, specifically includes selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel, and continuing to accumulate the unsent HARQ-ACK when the HARQ codebook fails to be sent on the candidate physical side link feedback channel within the current physical side link feedback channel period, to ensure that the HARQ feedback can be transmitted in a timely manner.

[0289] Eighth embodiment

[0290] Based on the above embodiments of the present application, this embodiment further discloses the codebook determination method in the above embodiments.

[0291] In the embodiment of the present application, the entirety of the HARQ-ACK information fed back by the terminal on a HARQ feedback resource (PSFCH channel) is called a HARQ-ACK codebook. The terminal performs HARQ-ACK feedback for at least the following types of sidelink transmission data.

[0292] (1) Indicates that there is PSSCH data transmission scheduled by the corresponding PSCCH.

[0293] (2) Indicates PSSCH data transmission without corresponding SL configured grant scheduled by PSCCH.

[0294] Optionally, the codebook refers to a HARQ-ACK codebook generation method in which the HARQ-ACK codebook size does not dynamically change with the actual data scheduling situation. In this method, the HARQ-ACK codebook size is determined according to predefined or RRC configured parameters.

[0295] Optionally, for feedback of a semi-static codebook on a PSFCH, generation of a HARQ-ACK codebook is divided into the following two steps.

[0296] Step 1: For a specific HARQ-ACK feedback time unit, i.e., the first type time slot n, the set of all sidelink data transmissions that require HARQ-ACK feedback (including the above two types of PSSCH, collectively referred to as candidate PSSCH reception opportunities) corresponding to the activated sidelink BWP in each serving cell. This set of candidate PSSCH reception opportunities is denoted as MA,c. MA,c is determined based on the following parameters. The first type time slot is a logical time slot, i.e., a time slot contained in a resource pool.

[0297] The PSFCH channel period in the resource pool associated with the activated sidelink BWP.

[0298] Assuming the PSFCH period is 4 time slots, the first type of time slots where the PSFCH is located are n, n+4, ..., n+4i, which are related to the available PSSCH reception opportunities included in the COT.

[0299] Optionally, the PSSCH reception timing is within any COT. Referring to Figure 12, Figure 12 is a first example principle diagram of the codebook determination method according to the eighth embodiment. As shown in Figure 12, assuming that the minimum interval between PSSCH and PSFCH is 2 time slots, the corresponding PSSCH transmission timing corresponding to the first type time slot n is the first type time slot n-2, the first type time slot n-3, the first type time slot n-4, and the first type time slot n-5. (The PSSCH corresponding to the first type time slot n-6 corresponds to the first type time slot (n-4)-2, that is, the PSFCH transmission timing of the first type time slot (n-4)).

[0300] Optionally, if the PSSCH transmission opportunities are all within the same COT, then MA,c={2, 3, 4, 5}.

[0301] Optionally, if the PSSCH transmission timing is not in the same COT, for example, the PSSCH transmission timing first type time slot n-4 and the first type time slot n-5 are not in any COT, while the PSSCH transmission timing first type time slot n-2 and the first type time slot n-3 are in the COT, then MA,c = {2, 3}.

[0302] Step 2: Determine the HARQ-ACK codebook based on the candidate PSSCH reception opportunity set of each cell obtained in step 1, the number of cells configured by RRC, the HARQ space bundling parameter, the CBG configuration parameter, and at least one of the maximum codeword parameter supported by each cell.

[0303] Each cell generates HARQ-ACK information bits for each candidate PSSCH reception opportunity in the candidate PSSCH end timing set MA,c. The candidate PSSCH end timing set MA,c includes J elements, where J is a positive integer greater than or equal to 1 and c is the cell identifier. The specific process can be found in the fifth embodiment above and will not be repeated here.

[0304] This embodiment, through the above-mentioned scheme, specifically includes selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel, and selecting the physical side link data channel reception opportunity belonging to the channel occupancy time as the candidate physical side link data channel reception opportunity, forming the candidate physical side link data channel reception opportunity set based on the candidate physical side link data channel reception opportunity, and then determining the hybrid automatic repeat request codebook, thereby improving the HARQ carrying capacity on the PSFCH resource and ensuring that the HARQ feedback can be transmitted in a timely manner.

[0305] Please refer to Figure 13, which is a schematic diagram of the structure of the codebook determination 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 codebook determination device shown in Figure 13 can be used to perform some or all of the functions of the method embodiment described in the above embodiment. As shown in Figure 13, the codebook determination device 110 includes:

[0306] A selection module 111 is configured to select or determine a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0307] The determination module 112 is configured to select or determine a hybrid automatic repeat request codebook based on the candidate physical sidelink data channel reception opportunity set.

[0308] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot of the associated physical uplink control channel and / or physical uplink data channel, and the channel occupancy time.

[0309] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0310] Optionally, step S1 includes at least one of the following:

[0311] Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel;

[0312] Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities between two adjacent physical side link feedback channel transmission opportunities;

[0313] Selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot where the associated physical uplink control channel and / or physical uplink data channel is located;

[0314] The candidate physical side link data channel reception opportunity set is selected or determined according to the physical side link data channel reception opportunity within the channel occupancy time.

[0315] Optionally, at least one of the following is included:

[0316] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes:

[0317] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set further includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel;

[0318] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set;

[0319] The step of selecting or determining the set of candidate physical side link data channel reception timings based on the physical side link data channel reception timings within the channel occupancy time includes: selecting the physical side link data channel reception timings within the channel occupancy time as the candidate physical side link data channel reception timings, and constituting the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

[0320] Optionally, step S2 includes:

[0321] The hybrid automatic repeat request codebook is selected or determined based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

[0322] Optionally, the step S2 includes at least one of the following:

[0323] Selecting or determining the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel reception opportunity set;

[0324] generating corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook;

[0325] An order of the mixed automatic repeat request information bits is determined based on an order of the candidate physical sidelink data channel reception opportunities.

[0326] Optionally, step S2 further includes at least one of the following:

[0327] If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback;

[0328] If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0329] The codebook determination device provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0330] Please refer to FIG14 , which is a second structural diagram of a codebook determination device provided in an embodiment of the present application. As shown in FIG14 , the codebook determination device 120 includes:

[0331] The sending module 121 is configured to send control information so that the terminal device determines a first preset content based on the control information, where the first preset content is used to select or determine a hybrid automatic repeat request codebook.

[0332] Optionally, the step of selecting or determining a hybrid automatic repeat request codebook according to the first preset content is:

[0333] S1: The terminal device selects or determines a candidate physical side link data channel receiving opportunity set based on a first preset content;

[0334] S2: The terminal device selects or determines a hybrid automatic repeat request codebook based on the candidate physical side link data channel reception opportunity set.

[0335] Optionally, the first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot of the associated physical uplink control channel and / or physical uplink data channel, and the channel occupancy time.

[0336] Optionally, the candidate physical side link data channel reception opportunity set includes one or more candidate physical side link data channel reception opportunities.

[0337] Optionally, step S1 includes at least one of the following:

[0338] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within the period of the physical side link feedback channel;

[0339] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities between two adjacent physical side link feedback channel transmission opportunities;

[0340] The terminal device selects or determines the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located;

[0341] The terminal device selects or determines the candidate physical side link data channel reception opportunity set based on the physical side link data channel reception opportunity within the channel occupancy time.

[0342] Optionally, at least one of the following is also included:

[0343] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes:

[0344] If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set further includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel;

[0345] The step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set;

[0346] The step of selecting or determining the set of candidate physical side link data channel reception timings based on the physical side link data channel reception timings within the channel occupancy time includes: selecting the physical side link data channel reception timings within the channel occupancy time as the candidate physical side link data channel reception timings, and constituting the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

[0347] Optionally, step S2 includes:

[0348] The terminal device selects or determines the hybrid automatic repeat request codebook based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or the second preset content.

[0349] Optionally, step S2 further includes at least one of the following:

[0350] The terminal device selects or determines the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel reception opportunity set;

[0351] The terminal device generates corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook;

[0352] The terminal device determines the order of the mixed automatic repeat request information bits based on the order of the candidate physical side link data channel reception opportunities.

[0353] Optionally, step S2 further includes at least one of the following:

[0354] If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback;

[0355] If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

[0356] The codebook determination device provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment, and its implementation principles and beneficial effects are similar, which will not be repeated here.

[0357] Refer to Figure 15, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 15, 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.

[0358] 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.

[0359] 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.

[0360] Optionally, the communication device 140 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0361] 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.

[0362] Optionally, data may also be stored in the memory 142. The processor 141 and the memory 142 may be provided separately or integrated together.

[0363] 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.

[0364] Optionally, if the communication device 140 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 145 can receive control information; and the processor 141 can determine the first preset content based on the control information, and then select or determine the hybrid automatic repeat request codebook.

[0365] 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.

[0366] 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 can send control information so that the terminal device determines the first preset content based on the control information, and the first preset content is used to select or determine the hybrid automatic repeat request codebook.

[0367] 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.

[0368] 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.

[0369] 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.

[0370] 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 15. The communication device may be an independent device or may be part of a larger device.

[0371] 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.

[0372] The present application also provides a communication device including a memory and a processor. The memory stores a codebook determination program, and when the codebook determination program is executed by the processor, the steps of the codebook determination 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.

[0373] An embodiment of the present application further provides a storage medium, on which a codebook determination program is stored. When the codebook determination program is executed by a processor, the steps of the codebook determination method in any of the above embodiments are implemented.

[0374] In the embodiments of the communication device and storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned codebook determination 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 method and will not be repeated here.

[0375] 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.

[0376] 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.

[0377] 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.

[0378] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0379] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0380] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0381] 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.

[0382] 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.

[0383] 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.

[0384] 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.

[0385] 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 storage medium or transmitted from one storage medium to another 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 by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The 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)).

[0386] 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 description and drawings of this application, 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 codebook determination method, wherein: include: S1: Select or determine a candidate physical side link data channel receiving opportunity set based on a first preset content; S2: Select or determine a hybrid automatic repeat request codebook based on the candidate physical sidelink data channel reception opportunity set.

2. The method according to claim 1, wherein The first preset content includes at least one of the following: the period and / or sending timing of the physical side link feedback channel, the time slot in which the associated physical uplink control channel and / or physical uplink data channel is located, and the channel occupancy time; and / or, the candidate physical side link data channel receiving timing set includes one or more candidate physical side link data channel receiving timings.

3. The method according to claim 2, wherein: Step S1 includes at least one of the following: Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel; Selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities between two adjacent physical side link feedback channel transmission opportunities; Selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission opportunity of the physical side link feedback channel and the time slot where the associated physical uplink control channel and / or physical uplink data channel is located; The candidate physical side link data channel reception opportunity set is selected or determined according to the physical side link data channel reception opportunity within the channel occupancy time.

4. The method according to claim 3, wherein: Also include at least one of the following: The step of selecting or determining the candidate physical side link data channel reception opportunity set according to one or more physical side link data channel reception opportunities within a period of the physical side link feedback channel includes: If the first preset condition is met, the candidate physical side link data channel reception opportunity set includes one or more physical side link data channel reception opportunities within the cycle of the current physical side link feedback channel, and / or, if the second preset condition is met, the candidate physical side link data channel reception opportunity set further includes one or more physical side link data channel reception opportunities within the cycle of the next physical side link feedback channel; The step of selecting or determining the candidate physical side link data channel reception opportunity set according to the transmission timing of the physical side link feedback channel and the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located includes: if the transmission timing of the physical side link feedback channel is after the time slot in which the associated physical uplink control channel and / or the physical uplink data channel are located, resetting the candidate physical side link data channel reception opportunity set; The step of selecting or determining the set of candidate physical side link data channel reception timings based on the physical side link data channel reception timings within the channel occupancy time includes: selecting the physical side link data channel reception timings within the channel occupancy time as the candidate physical side link data channel reception timings, and constituting the set of candidate physical side link data channel reception timings based on the candidate physical side link data channel reception timings.

5. The method according to any one of claims 2 to 4, wherein Step S2 includes: The hybrid automatic repeat request codebook is selected or determined based on the candidate physical side link data channel reception timing in the candidate physical side link data channel reception timing set and / or a second preset content.

6. The method according to claim 5, wherein: The S2 step includes at least one of the following: Selecting or determining the size of the hybrid automatic repeat request codebook based on the size of the candidate physical side link data channel reception opportunity set; generating corresponding hybrid automatic repeat request information bits based on the candidate physical side link data channel reception opportunity, for forming the hybrid automatic repeat request codebook; An order of the mixed automatic repeat request information bits is determined based on an order of the candidate physical sidelink data channel reception opportunities.

7. The method according to claim 6, wherein: Step S2 further includes at least one of the following: If the candidate physical sidelink data channel reception opportunity does not include a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to negative feedback; If the candidate physical sidelink data channel reception opportunity includes a physical sidelink data channel associated with the physical sidelink feedback channel, setting the corresponding position in the target hybrid automatic repeat request codebook to positive feedback or negative feedback.

8. A codebook determination method, wherein: The following steps are involved: Control information is sent so that the terminal device determines first preset content based on the control information, where the first preset content is used to select or determine a hybrid automatic repeat request codebook.

9. The method of claim 8, wherein: The first preset content includes at least one of the following: The period and / or transmission timing of the physical side link feedback channel; The time slot where the associated physical uplink control channel and / or physical uplink data channel is located; Channel occupancy time.

10. A communication device, wherein: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the codebook determination method according to claim 1 or 8 are implemented.

11. A storage medium, wherein: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the codebook determination method according to claim 1 or 8.

Images