WO2023133693A1

WO2023133693A1 - Communication method, communication device and storage medium

Info

Publication number: WO2023133693A1
Application number: PCT/CN2022/071396
Authority: WO
Inventors: 黄钧蔚; 黄伟
Original assignee: 深圳传音控股股份有限公司
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2023-07-20
Also published as: CN116349319A

Abstract

Disclosed in the present application are a communication method, a communication device and a storage medium. The method comprises: performing uplink transmission on the basis of uplink transmission configuration indication information, and prior to a first uplink transmission, adding an offset before a cyclic prefix of a first symbol of a CG-PUSCH (S10). Thus, by means of cyclic prefix extension, resource conflicts between different users can be avoided, and/or the overheads of DCI can be reduced.

Description

Communication method, communication device and storage medium

technical field

The present application relates to the technical field of mobile communication, and in particular to a communication method, a communication device and a storage medium.

Background technique

In the mobile communication system, for the configuration of uplink transmission, the base station instructs the terminal to transmit relevant information for uplink transmission, so that the terminal can access the channel. An important purpose or basic principle of configuring uplink transmission is to save DCI (Downlink Control Information, downlink control information )s expenses.

During the process of conceiving and implementing the present application, the inventor found that at least the following problems exist:

In some implementations, for the configuration of uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear, for example, the first symbol of CG-PUSCH (Configured grant-Physical Uplink shared channel, configuration authorization-physical uplink shared channel) is not clear Whether a cyclic prefix extension (CP extension, CP-ext) is required before the cyclic prefix (Cyclic Prefix, CP), which may cause conflicts between different terminals on the same CG-PUSCH resources. If a dynamic scheduling solution is adopted, such as directly through DCI dynamic indication, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save DCI overhead. If DCI is used to dynamically indicate cyclic prefix extension, it violates the design principle of configuring uplink transmission and increases DCI overhead.

The foregoing description is provided to provide general background information and does not necessarily constitute prior art.

Contents of the invention

In view of the above technical problems, the present application provides a communication method, communication device and storage medium, one of the purposes of which is how to configure uplink transmission, avoid uplink transmission resource conflicts between different user terminals, and/or save DCI overhead.

The present application provides a communication method, which can be applied to a communication terminal (such as a mobile phone), comprising the following steps:

S10: Before the first uplink transmission, add an offset before the cyclic prefix of the first symbol of the CG-PUSCH.

Optionally, the S10 step includes:

Before the first uplink transmission, the communication terminal determines an offset, and performs a cyclic prefix extension operation on the first uplink transmission.

Optionally, the manner in which the communication terminal determines the offset includes at least one of the following:

If the first uplink transmission occurs within the COT, the offset is determined by a first parameter in the first set;

If the first uplink transmission occurs outside the COT, the offset is determined by a second parameter in the second set.

Optionally, the manner of determining the COT includes at least one of the following:

Determine the COT by receiving at least one of an RRC message, a downlink channel, and a downlink signal;

The COT is determined by successfully sending at least one of an uplink channel and an uplink signal;

Determine the COT according to the received downlink control information.

Optionally, the method also includes:

The function of the communication terminal judging whether the first uplink transmission occurs within the COT is enabled or disabled through RRC signaling.

In response to enabling the function of whether the first uplink transmission occurs within the COT through RRC signaling, determine the offset by whether the first uplink transmission occurs within the COT;

In response to whether the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the offset is determined through a second parameter in the second set.

Optionally, the manner in which the communication terminal determines the offset includes:

The offset is determined according to the beam used by the CG-PUSCH resource of the first uplink transmission and the detected whether the beam of the downlink signal is QCL or not.

determining the bias by a first parameter within a first set in response to the detection result being QCL;

In response to the detection being not a QCL, the bias is determined by a second parameter within a second set.

Optionally, the manner in which the communication terminal determines the channel monitoring mechanism includes at least one of the following:

If the first uplink transmission occurs within the COT, use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the first uplink transmission occurs outside the COT, use the first type of channel monitoring mechanism;

If the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the first type of channel monitoring mechanism is used;

If the function of whether the first uplink transmission occurs within the COT is enabled through RRC signaling, then use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the beam used by the CG-PUSCH resource of the first uplink transmission and the detected beam of the downlink signal are QCL, then use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the beam used by the CG-PUSCH resource for the first uplink transmission and the detected beam of the downlink signal are not QCL, the first type of channel monitoring mechanism is used.

Optionally, before the step S10, it also includes:

Uplink transmission is performed based on the configured uplink transmission indication information.

The present application also proposes a communication method that can be applied to network equipment (such as a base station), including the following steps:

S100: Send configuration uplink transmission indication information, the configuration uplink transmission indication information is used to instruct the communication terminal to perform uplink transmission, and/or before the first uplink transmission of the communication terminal, in the cycle of the first symbol of CG-PUSCH Prefix with a bias.

Optionally, include at least one of the following:

The configured uplink transmission indication information includes the first set and/or the second set;

The configuration uplink transmission indication information is sent through RRC signaling;

Optionally, the method also includes:

Send a message carrying an indication channel monitoring mechanism.

The present application also provides a communication device, and the communication device of the present application includes:

The processing module is configured to add an offset before the cyclic prefix of the first symbol of the CG-PUSCH before the first uplink transmission.

Optionally, the processing module also includes:

The determining unit is configured to determine an offset before the first uplink transmission, perform a cyclic prefix extension operation on the first uplink transmission, and/or determine a channel monitoring mechanism.

Optionally, the communication device further includes:

A transmission module, configured to perform uplink transmission based on configured uplink transmission indication information.

A sending module, configured to send configuration uplink transmission indication information, the configuration uplink transmission indication information is used to instruct the communication terminal to perform uplink transmission, and/or before the first uplink transmission of the communication terminal, on the first CG-PUSCH A bias is added before the cyclic prefix of the symbol.

Optionally, the sending module is further configured to: send a message carrying an indication channel monitoring mechanism.

The present application also provides a communication device, including: a memory and a processor, where a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of any one of the above communication methods are implemented.

The present application also provides a computer-readable storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any one of the above-mentioned communication methods are implemented.

In the communication method, communication device and storage medium proposed in this application, the communication device performs uplink transmission based on the configured uplink transmission instruction information, and before the first uplink transmission, an offset is added before the cyclic prefix of the first symbol of CG-PUSCH , so that in the unlicensed spectrum, when different users prepare to transmit CG-PUSCH at the same time, different users need to monitor the channel to determine whether the channel is idle. When one of the users performs cyclic prefix extension, it means that the user occupies the channel in advance, then Other users sense that the channel is busy and will not transmit CG-PUSCH at the same time, so that resource conflicts between different users can be avoided through cyclic prefix extension, and/or DCI overhead can be saved.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, the Under the premise, other drawings can also be obtained based on these drawings.

FIG. 1 is a schematic diagram of a hardware structure of a terminal device implementing various embodiments of the present application;

FIG. 2 is a system architecture diagram of a communication network provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of a first embodiment of a communication method provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of a third embodiment of a communication method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of an interaction process of a communication method provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of functional modules of a communication device provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of functional modules of another communication device provided in an embodiment of the present application.

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. By means of the above drawings, specific embodiments of the present application have been shown, which will be described in more detail hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

Alternatively, as used herein, the term "comprises," "comprises," or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus, are also included. Without further limitations, an element defined by the statement "comprising a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element. Optionally, the present application Components, features, and elements with the same name in different embodiments may have the same meaning, or may have different meanings, and the specific meaning shall be determined based on the explanation in the specific embodiment or further combined with the context in the specific embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "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", "comprising" indicate the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not exclude one or more other features, steps, operations, The existence, occurrence or addition of an element, component, item, species, and/or group. The terms "or", "and/or", "comprising at least one of" and the like used in this application may be interpreted as inclusive, or mean any one or any combination. For example, "including 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", 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". Exceptions to this definition will only arise when combinations of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that although the various steps in the flow chart in the embodiment of the present application are displayed sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figure may include multiple sub-steps or multiple stages, these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order is not necessarily sequential Instead, it may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

Depending on the context, the words "if", "if" as used herein may be interpreted as "at" or "when" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrases "if determined" or "if detected (the stated condition or event)" could be interpreted as "when determined" or "in response to the determination" or "when detected (the stated condition or event) )" or "in response to detection of (a stated condition or event)".

Optionally, in this document, step codes such as S10 and S100 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantive limitation on the sequence.

It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In the following description, the use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating the description of the present application and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be mixedly used.

In this application, a communication device may be a terminal device or a base station device, which needs to be determined according to the specific context. If it is a terminal device, the terminal device may be implemented in various forms. For example, the terminal equipment described in this application may include mobile phones, tablet computers, notebook computers, palmtop computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, Terminal equipment such as wearable devices, smart bracelets, and pedometers, as well as fixed terminals such as base stations, digital TVs, and desktop computers.

In the subsequent description, terminal equipment will be taken as an example, and those skilled in the art will understand that, in addition to elements specially used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminals.

Please refer to FIG. 1 , which is a schematic diagram of the hardware structure of a terminal device implementing various embodiments of the present application. The terminal device 100 may include: an RF (Radio Frequency, radio frequency) unit 101, a WiFi module 102, an audio output unit 103, an A /V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111 and other components. Those skilled in the art can understand that the terminal device structure shown in Figure 1 does not constitute a limitation on the terminal device, and the terminal device may include more or less components than shown in the figure, or combine some components, or different components layout.

The following describes each component of the terminal device in detail in conjunction with Figure 1:

The radio frequency unit 101 can be used for sending and receiving information or receiving and sending signals during a call. Specifically, after receiving the downlink information of the base station, it is processed by the processor 110; in addition, the uplink data is sent to the base station. Generally, the radio frequency 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 the like. Optionally, the radio frequency unit 101 may also communicate with a network and other devices through wireless communication. The above wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, Global System for Mobile Communications), GPRS (General Packet Radio Service, General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000 , Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency division duplex long-term evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution, time-division duplex long-term evolution) and 5G, etc.

WiFi is a short-distance wireless transmission technology. The terminal device 100 can help users send and receive e-mails, browse webpages, and access streaming media through the WiFi module 102. It provides users with wireless broadband Internet access. Although FIG. 1 shows the WiFi module 102, it can be understood that it is not a necessary component of the terminal device, and can be completely omitted as required without changing the essence of the invention.

The audio output unit 103 can store the audio received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 when the terminal device 100 is in a call signal receiving mode, a call mode, a recording mode, a voice recognition mode, a broadcast receiving mode, or the like. The audio data is converted into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the terminal device 100 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

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 (Graphics Processing Unit, GPU) 1041 and a microphone 1042, and the graphics processing unit 1041 is used for still pictures or The image data of the video is processed. The processed image frames may be displayed on the display unit 106 . The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like operating modes, and can process such sound as audio data. The processed audio (voice) data can be converted into a format transmittable to a mobile communication base station via the radio frequency unit 101 for output in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the process of receiving and transmitting audio signals.

The terminal device 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 when the terminal device 100 moves to the ear. panel 1061 and/or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the posture of mobile phones (such as horizontal and vertical screen switching, related Games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for mobile phones, fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, Other sensors such as thermometers and infrared sensors will not be described in detail here.

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, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like.

The user input unit 107 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the terminal device. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072 . The touch panel 1071, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 1071 or near the touch panel 1071). operation), and drive the corresponding connection device according to the preset 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 orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into contact coordinates , and then sent to the processor 110, and can receive the command sent by the processor 110 and execute it. Optionally, the touch panel 1071 may be realized by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071 , the user input unit 107 may also include other input devices 1072 . Optionally, other input devices 1072 may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, etc., which are not specifically described here. limited.

Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits to the processor 110 to determine the type of the touch event, and then the processor 110 determines the touch event according to the touch event. The corresponding visual output is provided on the display panel 1061 . Although in FIG. 1, the touch panel 1071 and the display panel 1061 are used as two independent components to realize the input and output functions of the terminal device, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated The implementation of the input and output functions of the terminal device is not specifically limited here.

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

The memory 109 can be used to store software programs as well as various data. The memory 109 can mainly include a storage program area and a storage data area. Optionally, the storage program area can store an operating system, at least one function required application program (such as a sound playback function, an image playback function, etc.) etc.; the storage data area can be Store data (such as audio data, phone book, etc.) created according to the use of the mobile phone. Optionally, the memory 109 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The processor 110 is the control center of the terminal device 100, and uses various interfaces and lines to connect various parts of the entire terminal device 100, and runs or executes software programs and/or modules stored in the memory 109, and calls stored in the memory 109. data, execute various functions of the terminal device 100 and process data, so as to monitor the terminal device 100 as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes operating systems, user interfaces, and application programs, etc. The demodulation processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 110 .

The terminal device 100 can also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. and other functions.

Although not shown in FIG. 1 , the terminal device 100 may also include a Bluetooth module, etc., which will not be repeated here.

In order to facilitate understanding of the embodiments of the present application, the following describes the communication network system on which the terminal device of the present application is based.

Please refer to FIG. 2. FIG. 2 is a structure diagram of a communication network system provided by an embodiment of the present application. The communication network system is an LTE system of general mobile communication technology. ) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core, Evolved Packet Core Network) 203 and the operator's IP service 204.

Optionally, the UE 201 may be the above-mentioned terminal device 100, which will not be repeated here.

E-UTRAN 202 includes eNodeB 2021 and other eNodeB 2022 and so on. Optionally, the eNodeB 2021 can be connected to other eNodeB 2022 through a backhaul (for example, X2 interface), the eNodeB 2021 is connected to the EPC 203 , and the eNodeB 2021 can provide access from the UE 201 to the EPC 203 .

EPC203 may include MME (Mobility Management Entity, Mobility Management Entity) 2031, HSS (Home Subscriber Server, Home Subscriber Server) 2032, other MME2033, SGW (Serving Gate Way, Serving Gateway) 2034, PGW (PDN Gate Way, packet data Network Gateway) 2035 and PCRF (Policy and Charging Rules Function, Policy and Charging Functional Entity) 2036, etc. Optionally, MME2031 is a control node that processes signaling between UE201 and EPC203, and provides bearer and connection management. HSS2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and save some user-specific information about service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide UE 201 IP address allocation and other functions, PCRF2036 is the policy and charging control policy decision point of service data flow and IP bearer resources, it is the policy and charging execution function A unit (not shown) selects and provides available policy and charging control decisions.

The IP service 204 may include Internet, Intranet, IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) or other IP services.

Although the LTE system is used as an example above, those skilled in the art should know that this application is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA and future new wireless communication systems. The network system (such as 5G), etc., is not limited here.

Based on the above hardware structure of the terminal device and the communication network system, various embodiments of the present application are proposed.

The technical term involved in the embodiment of this application:

DCI: Downlink Control Information, downlink control information, carried by the downlink physical control channel PDCCH, the downlink control information sent by the eNB to the UE, including uplink and downlink resource allocation, HARQ information, power control, etc.;

COT: Channel Occupancy Time, channel occupation time;

LBT: Listen-before-talk, listen first and then speak;

CG-PUSCH: Configured grant-Physical Uplink shared channel, configuration authorization-physical uplink shared channel;

CP-extension: Cyclic Prefix extension, cyclic prefix extension;

QCL: Quasi-Co-located, quasi-co-located site;

RRC: Radio Resource Control, refers to radio resource control. RRC processes the third layer information of the control plane between UE (User Equipment) and eNodeB (Evolved Node-B);

OFDM: Othogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing;

SSSG Switching: Search Space Set Group Switching, search space set group switching;

spatial RX parameter: Spatial receiving parameter.

First embodiment:

Please refer to FIG. 3 , which is a schematic flowchart of a first embodiment of a communication method of the present application. In this embodiment, the communication method of the present application is applied to the above-mentioned terminal equipment (hereinafter referred to as the terminal), such as UE, and the terminal establishes a communication connection with the network equipment in the network communication system where it is located. The network equipment may be a base station Etc., this embodiment takes the communication implementation solution between the base station and the terminal (UE) as an example.

As shown in Figure 3, the communication method of the present application includes the following steps:

This embodiment considers that: in some implementations, for configuring uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear, for example, it is not clear whether the cyclic prefix (Cyclic Prefix, CP) of the first symbol of CG-PUSCH is before Cyclic prefix extension (CP extension, CP-ext) is required, which may cause conflicts between different terminals on the same CG-PUSCH resource. If a dynamic scheduling solution is adopted, such as directly through DCI dynamic indication, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save DCI overhead. If DCI is used to dynamically indicate cyclic prefix extension, it violates the design principle of configuring uplink transmission and increases DCI overhead.

Therefore, in the configured uplink transmission strategy of this embodiment, it is clearly indicated that the terminal needs to perform cyclic prefix extension (CP) before the cyclic prefix (Cyclic Prefix, CP) of the first symbol of CG-PUSCH before the first uplink transmission. extension, CP-ext), that is, before the first uplink transmission, the terminal needs to add an offset before the cyclic prefix of the first symbol of CG-PUSCH. In this way, in the unlicensed spectrum, when different users prepare to transmit CG-PUSCH at the same time, different users need to monitor the channel to determine whether the channel is idle. When one user performs cyclic prefix extension, it means that the user occupies the channel in advance, and the other The user monitors that the channel is busy and does not transmit the CG-PUSCH at the same time, so that resource conflicts among different users can be avoided through cyclic prefix extension, and/or DCI overhead can be saved.

Optionally, the terminal receives or acquires configuration uplink transmission indication information, performs uplink transmission based on the configuration uplink transmission indication information, and before the first uplink transmission, the first CG-PUSCH of the first uplink transmission A bias is added before the cyclic prefix of symbols.

Optionally, the terminal device receives configuration uplink transmission indication information sent from the base station. The configured uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, add a bias.

Optionally, the configured uplink transmission indication information may include the first set and/or the second set, and the first set and/or the second set include parameters for determining the offset.

Optionally, it is clear that before the first uplink transmission, the purpose of adding an offset before the cyclic prefix of the first symbol of the CG-PUSCH in the first uplink transmission is to avoid different Resource conflicts among users, and/or save DCI overhead.

Before the uplink transmission after the first uplink transmission of the terminal, it may not be necessary to add an offset before the cyclic prefix of the first symbol of the CG-PUSCH. When the terminal performs the first uplink transmission, the terminal has successfully occupied the unlicensed spectrum, and other users have given up to seize the channel. Therefore, for the uplink transmission after the first uplink transmission, there is no need to perform the cyclic prefix extension operation.

Optionally, the configured uplink transmission instruction information sent by the base station is also used to instruct the terminal to determine an offset before the first uplink transmission, and perform a cyclic prefix extension operation on the first uplink transmission. Optionally, the cyclic prefix extension operation means that the terminal adds the offset before the cyclic prefix of the first symbol of the CG-PUSCH in the time domain.

Optionally, the way for the terminal to determine the offset includes:

In the first manner, if the first uplink transmission occurs within the COT, the offset is determined by the first parameter in the first set.

During specific implementation, if the first uplink transmission occurs within the COT, the terminal selects the first parameter in the first set, and the first parameter is used to determine the offset; the first set includes At least one first argument.

Optionally, determining the offset refers to determining the length of the offset, that is, the length of the cyclic prefix extension CP-ext. The cyclic prefix extension is to extend the cyclic prefix of one symbol further forward in the time domain, so that the transmission starts earlier than the boundary of the OFDM symbol.

Optionally, the length of the offset, that is, the length of the cyclic prefix extension, may be 0 microseconds, 5 microseconds, 8 microseconds, 13 microseconds, 18 microseconds, 8+5*N microseconds, etc., where N is A positive number.

Optionally, the length of the offset is less than or equal to the length of one OFDM symbol.

Optionally, the length of the offset is less than or equal to the length of multiple OFDM symbols.

Optionally, the length of the OFDM symbol is negatively correlated with the subcarrier spacing.

Optionally, the bias is configured by high-layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Among them, C _i is an integer parameter, which is configured by high-level signaling and can be expressed as the number of symbols; T _symb is the corresponding symbol length; Δ _i can be composed of two parts (T _TA +T _Gap ), where T _TA is used to represent The length of TA, T _TA value can be 0; T _Gap is used to characterize the time interval, its value can be 16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds and T _symb , etc.;

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, the first set includes at least one first parameter, and the terminal randomly selects one first parameter from the first set.

Optionally, the first set contains at least one first parameter, and different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding parameter from the first set according to the priority and/or identifier of the transmission data. The first parameter of . The correspondence means that the priority and/or identifier of the first parameter is the same as the priority/or identifier of the transmission data.

Optionally, the first set includes at least one first parameter, and different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding first parameter from the first set according to channel conditions.

In a second manner, if the first uplink transmission occurs outside the COT, the offset is determined by a second parameter in the second set.

During specific implementation, if the first uplink transmission occurs outside the channel occupation time COT, the terminal selects a second parameter in the second set, and the second parameter is used to determine the offset; the second The collection contains at least one second parameter.

Optionally, the length of the offset, that is, the length of the cyclic prefix extension, may be 5 microseconds, 8 microseconds, 13 microseconds, 18 microseconds, 8+5*N microseconds, and so on.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second set includes at least one second parameter, and the terminal randomly selects one second parameter from the first set.

Optionally, the second set includes at least one second parameter, and different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding parameter from the second set according to the priority and/or identifier of the transmission data. The second parameter of . The corresponding means that the priority and/or identification of the second parameter is the same as the priority and/or identification of the transmission data.

Optionally, the second set includes at least one second parameter, and different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding second parameter from the second set according to channel conditions.

Optionally, the second parameter is a positive value.

Optionally, the first parameter and/or the second parameter are configured through RRC, and/or, the first parameter is smaller than the second parameter.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the way the communication terminal determines the offset may further include:

The terminal determines the COT, and the terminal judges whether the first uplink transmission occurs within the COT.

Optionally, the way for the terminal to determine the COT may include at least one of the following:

In the first manner, the terminal determines the COT by receiving at least one of an RRC message, a downlink channel, and a downlink signal;

Optionally, the downlink transmission occurs before the configured uplink transmission;

Optionally, the interval between the downlink transmission and the configured uplink transmission is smaller than a threshold, and the time unit of the threshold is microseconds.

In the second manner, the terminal determines the COT by successfully sending at least one of an uplink channel and an uplink signal;

Optionally, the COT is determined by terminal judgment, for example, the terminal sends at least one of an uplink channel and an uplink signal before sending the first uplink transmission, and the terminal determines the COT by successfully sending at least one of the uplink channel and uplink signal;

Optionally, the uplink transmission occurs on consecutive symbols, that is, the first uplink transmission, the uplink channel, and the uplink signal occur on consecutive symbols.

In a third manner, the terminal determines the COT according to the received downlink control information.

Optionally, the downlink control information is carried in DCI2_0, and the downlink information includes COT remaining time.

Optionally, this embodiment also includes the following solutions:

The function of the terminal judging whether the first uplink transmission occurs within the COT is enabled or disabled through RRC signaling.

Optionally, the base station sends configuration uplink transmission indication information through RRC signaling, and the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, before the first uplink transmission An offset is added before the cyclic prefix of the first symbol of the CG-PUSCH for uplink transmission. At the same time, the function of the terminal to determine whether the first uplink transmission occurs within the COT can be enabled or disabled in the RRC signaling.

Optionally, the manner for the terminal to determine the offset further includes at least one of the following:

The first way: in response to enabling the function of whether the first uplink transmission occurs within the COT through RRC signaling, determine the offset according to whether the first uplink transmission occurs within the COT;

Optionally, the base station sends configuration uplink transmission indication information through RRC signaling, and the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, before the first uplink transmission An offset is added before the cyclic prefix of the first symbol of the CG-PUSCH for uplink transmission, and at the same time, the terminal is enabled in the RRC signaling to determine whether the first uplink transmission occurs within the COT.

The terminal responds to whether the function of whether the first uplink transmission occurs within the COT is enabled through RRC signaling, and determines the offset according to whether the first uplink transmission occurs within the COT.

Optionally, if the first uplink transmission occurs within the COT, the terminal determines the offset by using the first parameter in the first set.

Optionally, the bias is configured by high-layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, if the first uplink transmission occurs outside the COT, the terminal determines the offset by using the second parameter in the second set.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Among them, C _i is an integer parameter, which is configured by high-level signaling and can be expressed as the number of symbols; T _symb is the corresponding symbol length; Δ _i can be composed of two parts (T _TA +T _Gap ), where T _TA is used to represent The length of TA, T _TA value can be 0; T _Gap is used to characterize the time interval, its value can be 16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds and T _symb etc.

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second parameter is a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

The second manner: in response to whether the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the offset is determined through the second parameter in the second set.

Optionally, the base station sends configuration uplink transmission indication information through RRC signaling, and the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, before the first uplink transmission An offset is added before the cyclic prefix of the first symbol of the CG-PUSCH for uplink transmission, and at the same time, the terminal is disabled in the RRC signaling to determine whether the first uplink transmission occurs within the COT.

The terminal responds to whether the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, and the offset is determined through the second parameter in the second set.

Optionally, the terminal selects a second parameter from a second set, where the second parameter is used to determine the offset; the second set includes at least one second parameter.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second parameter may be a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the manner in which the terminal determines the offset includes:

The terminal determines the offset according to the beam used by the CG-PUSCH resource of the first uplink transmission and the detected whether the beam of the downlink signal is QCL or not.

Optionally, the base station determines the beam used by the CG-PUSCH resource for the first uplink transmission and whether the detected beam of the downlink signal is QCL or not, and provides it to the terminal.

Optionally, the terminal determines whether the beam used by the CG-PUSCH resource for the first uplink transmission and the detected beam of the downlink signal is QCL or not.

Optionally, when the terminal determines the offset according to the beam used by the CG-PUSCH resource of the first uplink transmission and the detected result of whether the beam of the downlink signal is QCL, the way the terminal determines the offset may include :

The first way: the terminal determines the offset by using the first parameter in the first set in response to the detection result being QCL;

Optionally, the terminal selects a first parameter in a first set, where the first parameter is used to determine the offset; the first set includes at least one first parameter.

Optionally, the bias is configured by high-layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, the first set contains at least one first parameter, and different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding parameter from the first set according to the priority and/or identifier of the transmitted data. The first parameter of . The correspondence means that the priority and/or identifier of the first parameter is the same as the priority/or identifier of the transmission data.

The second manner: the terminal determines the offset by using the second parameter in the second set in response to the detection result being not the QCL.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second set includes at least one second parameter, and different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding second parameter from the second set according to channel conditions. Optionally, the second parameter is a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the beam used by the CG-PUSCH resource for the first uplink transmission is sent by at least the DMRS port information of the CG-PUSCH, the corresponding layer number of the data channel, and the SRS corresponding to the SRI information in the CG-PUSCH configuration information One of the ports used is determined.

Optionally, the beam of the downlink signal is determined by at least one of DMRS port information of the downlink control channel, TCI information indicated by the downlink control channel, and DMRS port information of the downlink data channel.

Optionally, the beam QCL refers to QCL typeD.

Optionally, the QCL means that a large-scale parameter of a channel experienced by a symbol on a certain antenna port can be inferred from a channel experienced by a symbol on another antenna port.

Optionally, the large-scale parameter may be delay spread, average delay, Doppler spread, Doppler offset, average gain, and spatial RX parameter (spatial reception parameter), etc.

Optionally, the spatial RX parameter can be at least one of parameters such as channel correlation matrix, transmit beam, receive beam, and transmit/receive beam equivalence, and the spatial RX parameter is used to define the channel size caused by changes in analog beamforming. Differences in scale parameters. If the two antenna ports are QCL in the sense of the spatial RX parameter, it can generally be understood that the same beam can be used to receive two ports or send two ports or receive and send two ports separately.

The QCL typeD mentioned here means that the spatial RX parameters of the two antenna ports are the same.

Optionally, the COT can be obtained by the base station and provided to the terminal.

Optionally, the COT can be obtained by the terminal.

Optionally, this embodiment of the present application also considers that: in some implementations, for configuring uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear, for example, it is not clear whether the base station indicates the type of LBT that needs to be performed before the terminal's uplink transmission (eg Type 1\Type 2\Type 3), which may reduce the probability of the terminal accessing the channel. If a dynamic scheduling solution is adopted, such as directly through DCI dynamic indication, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save DCI overhead. If DCI is used to dynamically indicate the LBT type, it violates the design principle of configuring uplink transmission and increases DCI overhead.

Therefore, in the further solution of this embodiment, the probability of the terminal accessing the channel is increased by specifying the type of LBT (such as Type 1\Type 2\Type 3) that the base station needs to perform before the uplink transmission of the terminal.

Optionally, the terminal receives or acquires a message carrying an indication channel monitoring mechanism.

Optionally, the terminal receives the message carrying the channel monitoring mechanism sent by the base station.

Optionally, the base station may separately send a message carrying an indication channel monitoring mechanism.

Optionally, the base station may send the message carrying the channel monitoring mechanism indication to the terminal through RRC signaling or configuration uplink transmission indication information.

Therefore, by specifying the type of LBT (such as Type 1\Type 2\Type 3) that the base station indicates to the terminal before uplink transmission, the probability of the terminal accessing the channel is increased.

Optionally, the manner in which the terminal determines the channel monitoring mechanism includes at least one of the following:

The first way: if the first uplink transmission occurs within the COT, use the second type channel monitoring mechanism (Type 2 channel access) or the third type channel monitoring mechanism (Type 3 channel access).

The second way: if the first uplink transmission occurs outside the COT, use the first type channel monitoring mechanism (Type 1 channel access).

Optionally, the above three channel monitoring mechanisms can be defined as follows:

Type 1 channel access: If the channel needs to be monitored multiple times, and the channel is idle, the channel is available;

Type 2 channel access: only need to monitor the channel once, and the channel is idle, then the channel is available;

Type 3 channel access: No need to monitor the channel, the channel is available.

Optionally, in another feasible implementation manner, the COT may be obtained by the terminal.

Optionally, the terminal determines the COT, and the terminal judges whether the first uplink transmission occurs within the COT.

The terminal determines the COT by receiving at least one of an RRC message, a downlink channel, and a downlink signal;

The terminal determines the COT by successfully sending at least one of an uplink channel and an uplink signal;

The terminal determines the COT according to the received downlink control information.

The third way: if the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the first type of channel monitoring mechanism is used.

The fourth way: if the function of whether the first uplink transmission occurs within the COT is enabled through RRC signaling, the second type of channel monitoring mechanism or the third type of channel monitoring mechanism is used.

Optionally, this embodiment also includes the following solutions:

Optionally, the base station sends configuration uplink transmission indication information or a message carrying an indication channel monitoring mechanism through RRC signaling, and the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or in the first uplink Before the transmission, add an offset before the cyclic prefix of the first symbol of the CG-PUSCH of the first uplink transmission, and the message carrying the channel monitoring mechanism is used to indicate the LBT that the terminal needs to perform before the uplink transmission type, and at the same time, the function of the terminal to determine whether the first uplink transmission occurs within the COT can be enabled or disabled in the RRC signaling.

Optionally, the way the terminal determines the channel monitoring mechanism includes:

The terminal determines the channel monitoring mechanism according to the beam used by the CG-PUSCH resource of the first uplink transmission and the detected whether the beam of the downlink signal is QCL or not.

Optionally, when the terminal determines the channel monitoring mechanism according to the beam used by the CG-PUSCH resource of the first uplink transmission and whether the detected beam of the downlink signal is QCL, the terminal determines the channel monitoring mechanism Can include:

Fifth manner: if the beam used by the CG-PUSCH resource of the first uplink transmission and the detected beam of the downlink signal are QCL, use the second type channel monitoring mechanism or the third type channel monitoring mechanism.

Sixth manner: if the beam used by the CG-PUSCH resource for the first uplink transmission and the detected beam of the downlink signal are not QCL, use the first type of channel monitoring mechanism.

Optionally, this embodiment also includes the following solutions:

Seventh manner: if the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the first type of channel monitoring mechanism is used.

Eighth manner: if the function of whether the first uplink transmission occurs within the COT is enabled through RRC signaling, use the second type channel monitoring mechanism or the third type channel monitoring mechanism.

Compared with the background technology, for the configuration of uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear. For example, it is not clear whether the base station indicates the type of LBT (such as Type 1\Type 2\Type 3) and It is unclear whether a cyclic prefix extension (CP extension, CP-ext) is required before the cyclic prefix (Cyclic Prefix, CP) of the first symbol of CG-PUSCH. If a dynamic scheduling solution is adopted, such as directly through DCI dynamic indication, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save DCI overhead. If DCI is used to dynamically indicate LBT type and cyclic prefix extension, it violates the design principle of configuring uplink transmission and increases DCI overhead.

In the scheme of this embodiment, by configuring uplink transmission, it is clear that the base station instructs the terminal before uplink transmission, specifically before the first uplink transmission, to add an offset before the cyclic prefix of the first symbol of CG-PUSCH (that is, it needs to perform cyclic prefix extension), thus, resource conflicts among different users can be avoided through cyclic prefix extension, and/or DCI overhead can be saved; in addition, the LBT type (for example, Type 1\Type 2\ Type 3), thereby increasing the probability of the terminal accessing the channel.

The following is an example of how the terminal determines the offset and the channel monitoring mechanism:

The terminal receives configuration uplink transmission indication information sent from the base station. The configured uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, add a At the same time, the configuration uplink transmission indication information also indicates the type of channel monitoring mechanism that the terminal needs to perform before the first uplink transmission.

Alternatively, the terminal receives the message indicating the type of the channel monitoring mechanism sent by the base station, and the terminal specifies the type of the channel monitoring mechanism performed before the first uplink transmission through the message indicating the type of the channel monitoring mechanism.

Optionally, the implementation scheme is as follows:

1. When the terminal detects a COT obtained by a base station, such as by detecting DCI 2-0, or detects a downlink signal, or when the terminal obtains a COT by itself, and the terminal has uplink data to be transmitted on the CG-PUSCH resource:

(1) The terminal judges whether the CG-PUSCH resource is in the COT:

① If the CG-PUSCH resource is in the COT, use the CP-extension parameter of 0us (0 microseconds); and/or use type 2/3 channel access;

② If the CG-PUSCH resource is outside the COT, randomly select the CP-extension parameter configured by RRC; and/or use type 1 channel access;

2. Enable or disable this function through RRC signaling, then:

(1) For the case of enabling this function, adopt the above scheme 1-(1);

(2) For the case of disabling this function, you can randomly select the CP-extension parameter configured by RRC; and/or use type 1 channel access;

3. The terminal judges whether beam 1 used by the CG-PUSCH resource and beam 2 of the detected downlink signal are QCL:

(1) If the beam is QCL, use the CP-extension parameter of 0 microseconds; and/or use type 2/3 channel access;

Optionally, by using the cyclic prefix of 0 microseconds to extend the CP-extension parameter, different users can send uplink transmissions at the same time without interfering with each other's listening channel (LBT), so that when the unlicensed spectrum is idle , different users can succeed in LBT at the same time, so as to perform uplink transmission on different resources at the same time, achieve frequency division multiplexing, and avoid uplink transmission conflicts between different users.

(2) If the beam is not QCL, randomly select the CP-extension parameter configured by RRC; and/or use type 1 channel access.

Therefore, by configuring the uplink transmission, it is clear that the base station instructs the terminal to add an offset before the cyclic prefix of the first symbol of the CG-PUSCH before the uplink transmission, specifically before the first uplink transmission (that is, cyclic prefix extension is required), Avoid resource conflicts between different users, and/or save DCI overhead; in addition, further specify the LBT type (such as Type 1\Type 2\Type 3) that the terminal needs to perform before uplink transmission, so that by switching the channel access type, The probability of the terminal accessing the channel can be increased.

Second embodiment:

This embodiment specifically explains the scenario where the base station instructs the terminal to perform the type of channel monitoring mechanism before the first uplink transmission:

Optionally, the terminal performs uplink transmission based on configured uplink transmission, and receives a message indicating the type of channel monitoring mechanism sent from the base station, and the terminal specifies the channel to be performed before the first uplink transmission through the message indicating the type of channel monitoring mechanism The type of listening mechanism.

Optionally, if the terminal performs uplink transmission based on configured uplink transmission, before the first uplink transmission in the uplink transmission, the terminal needs to determine to perform different types of Listen Before Talk (LBT) for the first uplink transmission The operation is to determine to implement different types of channel monitoring mechanisms for the first uplink transmission. The LBT means that the terminal needs to monitor the channel before the first uplink transmission to determine whether the channel is idle.

Optionally, the way for the terminal to determine the execution type of LBT may include at least one of the following:

If the first uplink transmission occurs within COT (channel occupancy time), the terminal uses the second type or third type channel monitoring mechanism (type 2/3 channel access);

And/or, if the first uplink transmission occurs outside the COT, use the first type channel monitoring mechanism (Type 1 channel access).

Optionally, the first type of channel monitoring mechanism includes at least one of the following steps:

1. Set N as Ninit, where Ninit is a value randomly selected from 0 to CW, and then perform step 4;

2. If N>0, and the base station/terminal chooses to decrease the counter, set N to N-1;

3. Listen to the channel for a first time period, if the channel is idle during the first time period, then perform step 4, and/or, if the channel is not idle during the first time period, then perform step 5 step;

4. If N=0, stop; and/or, if N is greater than 0, execute step 2;

5. Monitor the channel until the channel is busy in the second time period or the channel in the first time period in a second time period is idle;

6. If the channel is idle during the first period of time within a second period of time, then perform step 4, and/or, if the channel is not idle within the first period of time within the second period of time, then Go to step 5.

In the above steps, CW is the competition window, optionally, CW=3;

The second time period T _d =8 us includes a first time period T _sl =5 us, and the terminal needs to perform a channel monitoring within a first time period to determine whether the channel is idle.

Optionally, the second type channel monitoring mechanism includes at least one of the following steps:

If it is detected that the channel is idle within the first time period within the second time period, the base station/terminal may perform transmission on the unlicensed frequency spectrum.

Optionally, the third type of channel monitoring mechanism includes at least one of the following steps:

The base station/terminal can directly transmit on the unlicensed spectrum without monitoring the channel.

Optionally, the COT is determined through dynamic control information indication;

Optionally, the COT is determined through a high-level signaling instruction;

Optionally, the COT is determined through terminal judgment, for example, the terminal receives at least one of a downlink channel and a downlink signal sent by the base station;

Optionally, the interval between the downlink transmission and the configured uplink transmission is less than a threshold, and the time unit of the threshold is microseconds;

Optionally, the COT is determined through terminal judgment, for example, the terminal sends at least one of an uplink channel and an uplink signal before sending the first configured uplink transmission.

The terminal judges whether the beam used for configuring uplink transmission resources is consistent with the detected beam QCL of the downlink channel/signal:

If the beam is QCL, the terminal uses the channel monitoring mode of the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the beam is not QCL, the terminal uses the channel monitoring mode of the first type of channel monitoring mechanism.

Third embodiment:

Please refer to FIG. 4 , which is a schematic flowchart of a third embodiment of a communication method of the present application. In this embodiment, the communication method of the present application is applied to the above-mentioned network equipment, such as a base station, which establishes a communication connection with the terminal equipment in the network communication system. The network equipment can be a base station, etc., this The embodiment is taken as an example by taking a communication implementation solution between a base station and a terminal (UE).

As shown in Figure 4, the communication method of the present application includes the following steps:

Optionally, the communication terminal may be a terminal equipment UE, hereinafter referred to as a terminal.

This embodiment considers that: in some implementations, for configuring uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear, for example, it is not clear whether the cyclic prefix (Cyclic Prefix, CP) of the first symbol of CG-PUSCH is before Cyclic prefix extension (CP extension, CP-ext) is required, which may cause conflicts between different terminals on the same CG-PUSCH resources. If a dynamic scheduling solution is adopted, such as directly through DCI dynamic indication, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save DCI overhead. If DCI is used to dynamically indicate cyclic prefix extension, it violates the design principle of configuring uplink transmission and increases DCI overhead.

Optionally, the base station configures uplink transmission, and sends configuration uplink transmission indication information; the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, before the first uplink transmission An offset is added before the cyclic prefix of the first symbol of the CG-PUSCH for uplink transmission.

The terminal receives or acquires configuration uplink transmission indication information, performs uplink transmission based on the configuration uplink transmission indication information, and before the first uplink transmission, in the cycle of the first symbol of the CG-PUSCH of the first uplink transmission Prefix with a bias.

Before the uplink transmission after the first uplink transmission of the terminal, it may not be necessary to add an offset before the cyclic prefix of the first symbol of the CG-PUSCH. When the terminal performs the first uplink transmission, the terminal has successfully occupied the unlicensed spectrum, and other users have given up to seize the channel, so for the uplink transmission after the first uplink transmission, there is no need to perform the cyclic prefix extension operation.

Optionally, the configuration uplink transmission indication information sent by the base station may include the first set and/or the second set, and the first set and/or the second set include parameters for determining the offset.

Optionally, the configured uplink transmission indication information sent by the base station is also used to instruct the terminal to determine an offset before the first uplink transmission, and to perform a cyclic prefix extension operation on the first uplink transmission. Optionally, the cyclic prefix extension operation means that the terminal adds the offset before the cyclic prefix of the first symbol of the CG-PUSCH in the time domain.

Optionally, the way for the terminal to determine the offset includes:

Optionally, determining the offset refers to determining the length of the offset, that is, the length of the cyclic prefix extension CP-ext.

The cyclic prefix extension is to extend the cyclic prefix of one symbol further forward in the time domain, so that the transmission starts earlier than the boundary of the OFDM symbol.

Optionally, the bias is configured by high-layer signaling.

Optionally, in a feasible implementation manner, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Among them, C _i is an integer parameter, which is configured by high-level signaling and can be expressed as the number of symbols; T _symb is the corresponding symbol length; Δ _i can be composed of two parts (T _TA +T _Gap ), and T _TA is used to represent the TA Length, the value of T _TA can be 0; T _Gap is used to characterize the time interval, and its value can be 16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds and T _symb , etc. .

Optionally, in a feasible implementation manner, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, the first set contains at least one first parameter, and different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding first parameter from the first set according to the priority of the transmission data . The corresponding means that the priority and/or identifier of the first parameter is the same as the priority of the transmission data.

Optionally, the length of the offset, that is, the length of the cyclic prefix extension, may be 5 microseconds, 8 microseconds, 13 microseconds, 18 microseconds, 8+5*N microseconds, etc., where N is a positive number.

T _ext ＝C _i *T _symb -Δ _i

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second set includes at least one second parameter, and different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding second parameter from the second set according to the priority of the transmission data . The corresponding means that the priority and/or identifier of the second parameter is the same as the priority of the transmission data.

Optionally, the second parameter is a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the way the terminal determines the offset may further include:

Optionally, this embodiment also includes the following solutions:

Optionally, the bias is configured by high-layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, C _i is an integer parameter, configured by high-level signaling, and can be expressed as the number of symbols; T _symb is the corresponding symbol length; Δ _i can be composed of two parts (T _TA +T _Gap ), where T _TA is represented by To characterize the length of TA, the value of T _TA can be 0; T _Gap is used to represent the time interval, and its value can be 16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds and T _symb etc.

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second parameter is a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second parameter may be a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the manner in which the terminal determines the offset includes:

Optionally, the base station determines the beam used by the CG-PUSCH resource for the first uplink transmission and whether the beam of the detected downlink signal is QCL or not, and provides it to the terminal.

Optionally, the bias is configured by high-layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the first parameter can be greater than or equal to 0.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

Optionally, the bias includes at least one of the following parameters:

Parameter C _i , parameter T _symb , parameter Δ _i and the like.

Optionally, the second parameter is a positive value.

Optionally, the COT can be obtained by the base station.

Optionally, the COT can be obtained by the terminal.

Optionally, the beam QCL refers to QCL type D.

Optionally, the spatial RX parameter can be at least one of parameters such as channel correlation matrix, transmit beam, receive beam, and transmit/receive beam equivalence. The spatial RX parameter is used to define the channel size caused by changes in analog beamforming. Differences in scale parameters. If the two antenna ports are QCL in the sense of the spatial RX parameter, it can generally be understood that the same beam can be used to receive two ports or send two ports or receive and send two ports separately.

Optionally, this embodiment of the present application also considers that: in some implementations, for configuring uplink transmission, the base station indicates that the relevant information of the terminal's uplink transmission is not clear, for example, it is not clear whether the base station indicates the type of LBT that needs to be performed before the terminal's uplink transmission (eg Type 1\Type 2\Type 3), which may reduce the probability of the terminal accessing the channel. If a dynamic scheduling solution is adopted, for example, direct dynamic indication through DCI, DCI needs to be transmitted before each or several configuration uplink transmissions. An important purpose of configuring uplink transmission is to save the overhead of DCI. If the DCI is used to dynamically indicate the LBT type, it violates the design principle of configuring uplink transmission and increases the overhead of DCI.

Optionally, the base station sends a message carrying an indication channel monitoring mechanism. The terminal receives the message carrying the channel monitoring mechanism sent by the base station.

Optionally, this embodiment also includes the following solutions:

Fourth embodiment:

In the unlicensed spectrum, when the base station finds that the channel is idle through channel listening (LBT), it is beneficial for the base station to access the channel as soon as possible. Therefore, in order to ensure that the base station can transmit signals as soon as possible, the PDCCH monitoring opportunities need to occur frequently in the time domain. However, frequent monitoring of the PDCCH will lead to increased power consumption on the terminal side, which is unfavorable to the terminal. To solve this problem, a search space set group switching mechanism (SSSG switching) is designed. This mechanism balances the channel access possibility at the base station side and the power consumption of PDCCH monitoring at the terminal side. With the introduction of multi-slot PDCCH monitoring, PDCCH monitoring is implemented based on slot groups. The search space is configured based on the slot group, for example, the period of the PDCCH listening opportunity in the search space is in the slot group. Therefore, the search space set group switching also needs to be based on the slot group, otherwise the terminal will detect different search space set groups in one slot group, and this may exceed the PDCCH blind solution capability of the terminal.

Optionally, the switching of the search space set group is based on the time slot group, and the terminal monitors the PDCCH on one search space set group and its associated PDCCH monitoring opportunity within one time slot group.

When the search space set group switching is based on the time slot group, it is also necessary to determine in which time slot group the search space set group switching is performed.

Optionally, the terminal is configured with search space set group 0 and search space set group 1, and the terminal detects a downlink control channel carrying DCI 2_0:

The first method: If the terminal detects DCI 2_0 and the search space set group switching flag field in DCI 2_0 is set to 0, the terminal receives the first time slot after P _switch symbols after receiving the last symbol of DCI 2_0 The group starts monitoring the PDCCH corresponding to search space set group 0, and stops monitoring the PDCCH corresponding to search space set group 1;

The second method: if the terminal detects DCI 2_0 and the search space set group switching flag field in DCI 2_0 is set to 1, the terminal receives the first slot after P _switch symbols after receiving the last symbol of DCI 2_0 The group starts monitoring the PDCCH corresponding to the search space set group 1, and stops monitoring the PDCCH corresponding to the search space set group 0, and the terminal sets a timer value as a fixed value, and the fixed value is provided by high-layer signaling;

The third method: if the terminal is listening to the PDCCH corresponding to the search space set group 1, the terminal starts the first slot group after the timer expires or after the last symbol of the remaining channel occupation time indicated by DCI2_0 after P _switch symbols Monitor the PDCCH corresponding to search space set group 0, and stop monitoring the PDCCH corresponding to search space set group 1.

The fourth way: If the terminal detects a DCI format at the PDCCH monitoring opportunity corresponding to the monitoring search space set group 0, the terminal starts the first time slot group after P _switch symbols after receiving the last symbol of the DCI format Monitor the PDCCH corresponding to search space set group 1, and stop monitoring the PDCCH corresponding to search space set group 0. When the terminal detects a DCI format at the PDCCH monitoring opportunity in any search space set, the terminal sets the value of a timer to Set as a fixed value, the fixed value is provided by high-layer signaling;

Fifth way: If the terminal is listening to the PDCCH corresponding to search space set group 1, the terminal starts the first slot group after the timer expires or after the last symbol of the remaining channel occupation time indicated by DCI2_0 after P _switch symbols Monitor the PDCCH corresponding to search space set group 0, and stop monitoring the PDCCH corresponding to search space set group 1.

In this embodiment, the implementation process of communication between a network device (base station) and a terminal device (terminal) may refer to FIG. 5 .

As shown in Figure 5, the main interaction process includes:

Step A: The network device sends configuration uplink transmission indication information;

Step B: The terminal device performs uplink transmission based on the configured uplink transmission indication information;

Step C: Before the first uplink transmission, the terminal device adds an offset before the cyclic prefix of the first symbol of CG-PUSCH;

Step D: The terminal device determines a channel monitoring mechanism before the first uplink transmission.

For the specific communication process, reference may be made to the foregoing embodiments, and details are not repeated here.

The present application also provides a communication device, please refer to FIG. 6 , which is a schematic diagram of functional modules of the communication device of the present application.

The communication device of this application is applied to terminal equipment, and the communication device of this application may include:

Optionally, the processing module also includes:

Optionally, the communication device of the present application may also include:

Optionally, the function implementation of each module in the above communication device corresponds to each step in the above communication method embodiment, and the functions and implementation processes thereof will not be repeated here.

The present application also provides a communication device, please refer to FIG. 7 , which is a schematic diagram of functional modules of the communication device of the present application.

The communication device of this application is applied to network equipment, and the communication device of this application includes:

An embodiment of the present application further provides a communication device, the communication device includes a memory and a processor, and a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the communication method in any of the foregoing embodiments are implemented.

The communication device may be a terminal device in the above communication method, or a network device in the above communication method, and the specific reference needs to be combined with the context. When the communication device is used as the terminal device, it can specifically be: mobile phone, tablet computer, notebook computer, palmtop computer, personal digital assistant (Personal Digital Assistant, PDA), portable media player (Portable Media Player, PMP), navigation Devices, wearable devices, smart bracelets, pedometers and other terminal equipment. Optionally, when the communication device serves as the network device, specifically, it may be a base station or the like.

An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the communication method in any of the foregoing embodiments are implemented.

The embodiments of the communication device and the computer-readable storage medium provided in this application may contain all the technical features of any of the above-mentioned communication method embodiments. Do repeat.

An embodiment of the present application further provides a computer program product, the computer program product includes computer program code, and when the computer program code is run on the computer, the computer is made to execute the methods in the above various possible implementation manners.

The embodiment of the present application also provides a chip, including a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device installed with the chip executes the above various possible implementation modes. Methods.

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

It can be understood that the above scenario is only an example, and does not constitute a limitation on the application scenario of the technical solution provided by the embodiment of the present application, and the technical solution of the present application can also be applied to other scenarios. For example, those skilled in the art know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The steps in the methods of the embodiments of the present application can be adjusted, combined and deleted according to actual needs.

Units in the device in the embodiment of the present application may be combined, divided and deleted according to actual needs.

In this application, descriptions of the same or similar terms, concepts, technical solutions and/or application scenarios are generally only described in detail when they appear for the first time, and when they appear repeatedly later, for the sake of brevity, they are generally not repeated. When understanding the technical solutions and other contents of the present application, for the same or similar term concepts, technical solutions and/or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

In this application, the description of each embodiment has its own emphasis. For the parts that are not detailed or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

The various technical features of the technical solution of the present application can be combined arbitrarily. For the sake of concise description, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It should be regarded as the scope described in this application.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art, and the computer software product is stored in one of the above storage media (such as ROM/RAM, magnetic CD, CD), including several instructions to make a terminal device (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) execute the method of each embodiment of the present application.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, special purpose computer, a computer network, or other programmable apparatus. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g. Coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media. Usable media may be magnetic media, (eg, floppy disk, memory disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or indirectly used in other related technical fields, All are included in the scope of patent protection of the present application in the same way.

Claims

A communication method, characterized in that it comprises the following steps:

S10: Before the first uplink transmission, add an offset before the cyclic prefix of the first symbol of the CG-PUSCH.
The method according to claim 1, wherein the S10 step comprises:

Before the first uplink transmission, the communication terminal determines an offset, and performs a cyclic prefix extension operation on the first uplink transmission.
The method according to claim 2, wherein the method for determining the offset by the communication terminal includes at least one of the following:

If the first uplink transmission occurs within the COT, the offset is determined by a first parameter in the first set;

If the first uplink transmission occurs outside the COT, the offset is determined by a second parameter in the second set.
The method according to claim 3, wherein the manner of determining the COT includes at least one of the following:

Determine the COT by receiving at least one of an RRC message, a downlink channel, and a downlink signal;

The COT is determined by successfully sending at least one of an uplink channel and an uplink signal;

Determine the COT according to the received downlink control information.
The method according to claim 3, further comprising:

The function of the communication terminal judging whether the first uplink transmission occurs within the COT is enabled or disabled through RRC signaling.
The method according to claim 5, wherein the method for determining the offset by the communication terminal includes at least one of the following:

In response to enabling the function of whether the first uplink transmission occurs within the COT through RRC signaling, determine the offset by whether the first uplink transmission occurs within the COT;

In response to whether the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the offset is determined through a second parameter in the second set.
The method according to claim 2, wherein the method for determining the offset by the communication terminal comprises:

The offset is determined according to the beam used by the CG-PUSCH resource of the first uplink transmission and the detected whether the beam of the downlink signal is QCL or not.
The method according to claim 7, wherein the manner for the communication terminal to determine the offset comprises:

determining the bias by a first parameter within a first set in response to the detection result being QCL;

In response to the detection being not a QCL, the bias is determined by a second parameter within a second set.
The method according to any one of claims 1 to 8, characterized in that the way the communication terminal determines the channel monitoring mechanism includes at least one of the following:

If the first uplink transmission occurs within the COT, use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the first uplink transmission occurs outside the COT, use the first type of channel monitoring mechanism;

If the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, the first type of channel monitoring mechanism is used;

If the function of whether the first uplink transmission occurs within the COT is enabled through RRC signaling, then use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the beam used by the CG-PUSCH resource of the first uplink transmission and the detected beam of the downlink signal are QCL, then use the second type of channel monitoring mechanism or the third type of channel monitoring mechanism;

If the beam used by the CG-PUSCH resource for the first uplink transmission and the detected beam of the downlink signal are not QCL, the first type of channel monitoring mechanism is used.
The method according to any one of claims 1 to 8, characterized in that, before the step S10, further comprising:

Uplink transmission is performed based on the configured uplink transmission indication information.
A communication method, characterized in that it comprises the following steps:

S100: Send configuration uplink transmission indication information, the configuration uplink transmission indication information is used to instruct the communication terminal to perform uplink transmission, and/or before the first uplink transmission of the communication terminal, the cycle of the first symbol of CG-PUSCH Prefix with a bias.
The method according to claim 11, comprising at least one of the following:

The configured uplink transmission indication information includes the first set and/or the second set;

The configuration uplink transmission indication information is sent through RRC signaling.
The method according to claim 11 or 12, characterized in that the method further comprises:

Send a message carrying an indication channel monitoring mechanism.
A communication device, characterized by comprising: a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the method according to any one of claims 1 to 13 is realized. The steps of the communication method.
A computer-readable storage medium, wherein a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the communication method according to any one of claims 1 to 13 are implemented.