CN116349319A

CN116349319A - Communication method, communication device, and storage medium

Info

Publication number: CN116349319A
Application number: CN202280006051.8A
Authority: CN
Inventors: 黄钧蔚; 黄伟
Original assignee: Shenzhen Transsion Holdings Co Ltd
Current assignee: Shenzhen Transsion Holdings Co Ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2023-06-27
Also published as: WO2023133693A1

Abstract

The application discloses a communication method, a communication device and a storage medium, wherein the method comprises the following steps: based on the configuration uplink transmission indication information, uplink transmission is carried out, and before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH, so that resource conflict among different users can be avoided through cyclic prefix expansion, and/or the cost of DCI is saved.

Description

Communication method, communication device, and storage medium

Technical Field

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

Background

In a mobile communication system, for configuring uplink transmission, relevant information of uplink transmission of a terminal is indicated by a base station so that the terminal accesses a channel, wherein an important purpose or basic principle of configuring uplink transmission is to save the cost of DCI (Downlink Control Information ).

In the process of designing and implementing the present application, the inventors found that at least the following problems exist:

in some implementations, for configuring uplink transmission, the base station indicates that the information related to uplink transmission of the terminal is not clear, for example, whether a Cyclic Prefix (CP) of a first symbol of CG-PUSCH (Configured grant-physical uplink shared channel) is required to be extended (CP extension) before the CP is not clear, which may cause a collision between different terminals on the same CG-PUSCH resource. If a dynamic scheduling scheme is employed, such as directly through a DCI dynamic indication, the DCI needs to be transmitted before each or several uplink transmissions are configured. An important purpose of configuring uplink transmission is to save the cost of DCI, and if the cyclic prefix extension is dynamically indicated by DCI, the design principle of configuring uplink transmission is violated, and the cost of DCI is increased.

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

Disclosure of Invention

Aiming at the technical problems, the application provides a communication method, communication equipment and a storage medium, wherein one purpose is how to configure uplink transmission, avoid uplink transmission resource conflict between different user terminals and/or save the cost of DCI.

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

s10: before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of CG-PUSCH.

Optionally, the step S10 includes:

before the first uplink transmission, the communication terminal determines a bias and performs a cyclic prefix extension operation on the first uplink transmission.

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

if the first uplink transmission occurs within the COT, determining the bias through a first parameter in a first set;

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

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

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

determining the COT by successfully transmitting at least one of an uplink channel and an uplink signal;

and determining the COT according to the received downlink control information.

Optionally, the method further comprises:

and the communication terminal judges whether the first uplink transmission occurs in the COT or not, and enables or disables the function through RRC signaling.

determining the bias by whether the first uplink transmission occurs within the COT in response to the function of whether the first uplink transmission occurs within the COT being enabled by RRC signaling;

and determining the bias by a second parameter in the second set in response to whether the first uplink transmission occurs within the COT or not being disabled by RRC signaling.

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

and determining the bias according to the detection result of whether the beam used by the CG-PUSCH resource of the first uplink transmission and the beam QCL of the detected downlink signal.

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

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

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

if the first uplink transmission occurs within the COT, a second type channel monitoring mechanism or a third type channel monitoring mechanism is used;

if the first uplink transmission occurs outside the COT, a first type channel monitoring mechanism is used;

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

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

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

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

Optionally, before the step S10, the method further includes:

and carrying out uplink transmission based on the configuration uplink transmission indication information.

The application also provides a communication method which can be applied to network equipment (such as a base station), and comprises the following steps:

s100: and sending configuration uplink transmission indication information, wherein the configuration uplink transmission indication information is used for indicating the communication terminal to carry out uplink transmission, and/or adding a bias before the cyclic prefix of the first symbol of the CG-PUSCH before the communication terminal carries out uplink transmission for the first time.

Optionally, at least one of the following is included:

the uplink transmission indication information comprises a first set and/or a second set;

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

optionally, the method further comprises:

and sending a message carrying an indication channel monitoring mechanism.

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

and the processing module is used for adding a bias before the cyclic prefix of the first symbol of the CG-PUSCH before the first uplink transmission.

Optionally, the processing module further includes:

a determining unit, configured to determine a bias before the first uplink transmission, and perform a cyclic prefix extension operation on the first uplink transmission, and/or determine a channel listening mechanism.

Optionally, the communication device further includes:

and the transmission module is used for carrying out uplink transmission based on the configuration uplink transmission indication information.

and the sending module is used for sending configuration uplink transmission indication information, wherein the configuration uplink transmission indication information is used for indicating the communication terminal to carry out uplink transmission, and/or before the communication terminal carries out uplink transmission for the first time, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH.

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

The present application also provides a communication device comprising: a memory, a processor, the memory having stored thereon a computer program which, when executed by the processor, performs the steps of any of the communication methods described above.

The present application also provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of any of the communication methods described above.

According to the communication method, the communication device and the storage medium, the communication device performs uplink transmission based on the configuration uplink transmission indication information, before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH, so that when different users prepare to transmit the CG-PUSCH at the same time in an unlicensed spectrum, the different users need to monitor channels to judge whether the channels are idle, when one user performs cyclic prefix expansion, which means that the user occupies the channels in advance, the other users monitor the channels busy and cannot transmit the CG-PUSCH at the same time, and resource conflict among different users can be avoided through the cyclic prefix expansion, and/or DCI overhead is saved.

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 drawings that are needed in the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

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

fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a first embodiment of a communication method according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a third embodiment of a communication method according to an embodiment of the present application;

fig. 5 is an interaction flow diagram of a communication method according to an embodiment of the present application;

fig. 6 is a schematic functional block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic functional block diagram of another communication device according to an embodiment of the present application.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings. Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

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

Alternatively, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises the element, and alternatively, elements having the same name in different embodiments of the present application may have the same meaning or may have different meanings, a particular meaning of which is to be determined by its interpretation in this particular embodiment or further in connection with the context of this particular embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context. 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 will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or," "and/or," "including at least one of," and the like, as used herein, may be construed as inclusive, or meaning any one or any combination. For example, "including at least one of: A. b, C "means" any one of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C ", again as examples," A, B or C "or" A, B and/or C "means" any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C). An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily occurring in sequence, but may be performed alternately or alternately with other steps or at least a portion of the other steps or stages.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.

Alternatively, step numbers such as S10, S100, etc. are used herein for the purpose of more clearly and briefly describing the corresponding contents without constituting a substantial limitation in order.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se. Thus, "module," "component," or "unit" may be used in combination.

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

The following description will be given taking a terminal device as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Referring to fig. 1, which is a schematic hardware structure of a terminal device implementing various embodiments of the present application, the terminal device 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. It will be appreciated by those skilled in the art that the terminal device structure shown in fig. 1 does not constitute a limitation of the terminal device, and the terminal device may comprise more or less components than shown, or may combine certain components, or may have a different arrangement of components.

The following describes the components of the terminal device in detail with reference to fig. 1:

the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, 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 networks and other devices via wireless communication. The wireless communication may 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 ), CDMA2000 (Code Division Multiple Access, 2000, CDMA 2000), WCDMA (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, among others.

WiFi belongs to a short-distance wireless transmission technology, and the terminal equipment 100 can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the essential constitution of the terminal device, and can be omitted entirely as required within the scope of not changing the essence of the invention.

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

The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. 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 transmitted 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, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone 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 course of receiving and transmitting the audio signal.

The terminal device 100 further comprises 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 may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor may turn off the display panel 1061 and/or the backlight when the terminal device 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.

The display unit 106 is used to display information input by a 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 (OLED), or the like.

The user input unit 107 is operable to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal device. Alternatively, 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, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects the touch azimuth of the user, detects a signal brought by touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Alternatively, the touch panel 1071 may be implemented in various types of resistive, capacitive, infrared, surface acoustic wave, and the like. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. Alternatively, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.

Alternatively, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and the processor 110 then provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the terminal device, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the terminal device, which is not limited herein.

The interface unit 108 serves as an interface through which at least one external device can be connected to the terminal apparatus 100. For example, the external devices 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 having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 100 or may be used to transmit data between the terminal apparatus 100 and an external device.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, and alternatively, the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. Alternatively, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 110 is a control center of the terminal device 100, connects respective parts of the entire terminal device 100 using various interfaces and lines, and performs various functions of the terminal device 100 and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the terminal device 100. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, the application processor optionally handling mainly an operating system, a user interface, an application program, etc., the modem processor handling mainly wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The terminal device 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, power consumption management, etc. through the power management system.

Although not shown in fig. 1, the terminal device 100 may further include a bluetooth module or the like, which is not described herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the terminal device of the present application is based will be described below.

Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system provided in the embodiment of the present application, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.

Alternatively, the UE201 may be the terminal device 100 described above, which is not described herein.

The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Alternatively, the eNodeB2021 may connect with other enodebs 2022 over a backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access for the UE201 to the EPC 203.

EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. Optionally, MME2031 is a control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.

Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present application is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems (e.g., 5G), etc.

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

Technical terms related to embodiments of the present application:

DCI: downlink Control Information, downlink control information is carried by a downlink physical control channel PDCCH, and the downlink control information sent to the UE by the eNB comprises uplink and downlink resource allocation, HARQ information, power control and the like;

COT: channel Occupancy Time, channel occupancy time;

LBT: listen-before-talk;

CG-PUSCH: configured grant-Physical Uplink shared channel, configured grant-physical uplink shared channel;

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

QCL: quasi-Co-located, quasi Co-sited;

RRC: radio Resource Control, radio resource control. RRC processing UE (User Equipment) and eNodeB (Evolved Node-B) layer three information of the control plane;

OFDM: othogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing;

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

spatial RX parameter: the parameters are received spatially.

First embodiment:

referring to fig. 3, fig. 3 is a flow chart of a first embodiment of the communication method of the present application. In this embodiment, the communication method is applied to the terminal device (hereinafter referred to as a terminal) as described above, for example, UE, where the terminal establishes a communication connection with a network device in the network communication system, where the network device may be a base station or the like, and this embodiment uses a communication implementation scheme of the base station and the terminal (UE) as an example.

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

The present embodiment considers: in some implementations, for configuring uplink transmission, the base station indicates that the information related to uplink transmission of the terminal is not clear, for example, whether a Cyclic Prefix (CP) of the first symbol of CG-PUSCH is required to be extended (CP extension) before the first symbol is clear, which may cause a collision between different terminals on the same CG-PUSCH resource. If a dynamic scheduling scheme is employed, such as directly through a DCI dynamic indication, the DCI needs to be transmitted before each or several uplink transmissions are configured. An important purpose of configuring uplink transmission is to save the cost of DCI, and if the cyclic prefix extension is dynamically indicated by DCI, the design principle of configuring uplink transmission is violated, and the cost of DCI is increased.

Thus, in the configuration uplink transmission policy of this embodiment, it is explicitly indicated that before the first uplink transmission, the terminal needs to perform Cyclic Prefix extension (CP extension) before the Cyclic Prefix (CP) of the first symbol of CG-PUSCH, that is, before the first uplink transmission, the terminal needs to add a bias before the Cyclic Prefix of the first symbol of CG-PUSCH. In this way, in unlicensed spectrum, when different users prepare to transmit CG-PUSCH at the same time, different users need to monitor a channel to determine whether the channel is idle, when one of the users performs cyclic prefix extension, which means that the user occupies the channel in advance, other users monitor that the channel is busy and cannot transmit CG-PUSCH at the same time, so that resource conflict between different users can be avoided through cyclic prefix extension, and/or the cost of DCI is saved.

Optionally, the terminal receives or acquires the configured uplink transmission indication information, performs uplink transmission based on the configured uplink transmission indication information, and adds a bias before the cyclic prefix of the first symbol of the CG-PUSCH of the first uplink transmission.

Optionally, the terminal device receives the configured uplink transmission indication information sent by the base station. The configured uplink transmission indication information is used for indicating the terminal to perform uplink transmission, and/or before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH of the first uplink transmission.

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

Optionally, the purpose of adding an offset to the cyclic prefix of the first symbol of CG-PUSCH in the first uplink transmission by the explicit terminal before the first uplink transmission is to avoid resource collision between different users by cyclic prefix extension and/or save DCI overhead.

It may not be necessary to add a bias before the cyclic prefix of the first symbol of CG-PUSCH before the uplink transmission after the first uplink transmission of the terminal. When the terminal performs the first uplink transmission, the terminal has successfully occupied the unlicensed spectrum, and other users have abandoned preempting channels, so that the cyclic prefix extension operation does not need to be performed for the uplink transmission after the first uplink transmission.

Optionally, the configured uplink transmission indication information sent by the base station is further used for indicating the terminal to determine bias before the first uplink transmission, and executing cyclic prefix extension operation on the first uplink transmission. Alternatively, the cyclic prefix extension operation means that the terminal adds the offset before the cyclic prefix of the first symbol of CG-PUSCH in the time domain.

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

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

In specific implementation, if the first uplink transmission occurs within the COT, the terminal selects a first parameter in a first set, where the first parameter is used to determine the offset; at least one first parameter is included in the first set.

Alternatively, determining the offset refers to determining the length of the offset, i.e., 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.

Alternatively, the length of the bias, i.e., the length of the cyclic prefix extension, may be 0 microseconds, 5 microseconds, 8 microseconds, 13 microseconds, 18 microseconds, 8+5 x 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 the plurality of OFDM symbols.

Optionally, the length of the OFDM symbol is inversely related to the subcarrier spacing.

Optionally, the bias is configured by higher layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i ；

wherein C is _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap ) Wherein T is _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterizing the time interval, the values may be 16 μs, 25 μs, 34 μs, 43 μs, 52 μs, 61 μs, and T _symb Etc.;

optionally, the bias comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may 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 includes at least one first parameter, different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding first parameters from the first set according to the priorities and/or identifiers of the transmission data. The correspondence refers to the priority and/or identification of the first parameter being the same as the priority and/or identification of the transmission data.

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

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

In specific implementation, if the first uplink transmission occurs outside the channel occupation time COT, the terminal selects a second parameter in the second set, where the second parameter is used to determine the offset; at least one second parameter is included in the second set.

Alternatively, the length of the bias, i.e., the length of the cyclic prefix extension, may be 5 microseconds, 8 microseconds, 13 microseconds, 18 microseconds, 8+5×n microseconds, etc.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

optionally, the bias comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

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, different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding second parameters from the second set according to the priorities and/or identifiers of the transmission data. The correspondence 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, different second parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding second parameters from the second set according to the channel condition.

Optionally, the second parameter is a positive value.

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

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

Optionally, the manner in which the communication terminal determines the offset may further include:

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

Optionally, the manner in which the terminal determines the COT may include at least one of:

the first mode, the terminal determines the COT by receiving at least one of RRC message, downlink channel and 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 less than a threshold, and the time unit of the threshold is microseconds.

The terminal determines the COT by successfully transmitting at least one of an uplink channel and an uplink signal in a second mode;

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 the uplink signal;

Alternatively, the uplink transmission occurs on consecutive symbols, i.e. the first uplink transmission and the uplink channel, the uplink signal occurs on consecutive symbols.

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

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

Optionally, the present embodiment further includes the following schemes:

and the terminal judges whether the first uplink transmission occurs in the COT or not, and enables or disables the function through RRC signaling.

Optionally, the base station issues configuration uplink transmission indication information through RRC signaling, where the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, an offset is added before a cyclic prefix of a first symbol of the CG-PUSCH of the first uplink transmission. Meanwhile, the function of the terminal to determine whether the first uplink transmission occurs within the COT may be enabled or disabled in the RRC signaling.

Optionally, the manner in which the terminal determines the bias further includes at least one of:

the first way is: determining the bias by whether the first uplink transmission occurs within the COT in response to the function of whether the first uplink transmission occurs within the COT being enabled by RRC signaling;

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

The terminal determines the bias by whether the first uplink transmission occurs within the COT in response to the function of whether the first uplink transmission occurs within the COT being enabled by RRC signaling.

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

Optionally, the bias is configured by higher layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

optionally, the bias comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may be greater than or equal to 0.

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

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

wherein C is _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap ) Wherein T is _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterising time intervalsThe values can be 16 microsecond, 25 microsecond, 34 microsecond, 43 microsecond, 52 microsecond, 61 microsecond and T _symb Etc.

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Optionally, the second parameter is a positive value.

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

The second way is: and determining the bias by a second parameter in the second set in response to whether the first uplink transmission occurs within the COT or not being disabled by RRC signaling.

Optionally, the base station issues configuration uplink transmission indication information through RRC signaling, where the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, an offset is added before a cyclic prefix of a first symbol of the CG-PUSCH of the first uplink transmission, and at the same time, a function that the terminal determines whether the first uplink transmission occurs within the COT is disabled in the RRC signaling.

The terminal determines the bias by a second parameter in the second set in response to the functionality of whether the first uplink transmission occurred within the COT being disabled by RRC signaling.

Optionally, the terminal selects a second parameter within the second set, the second parameter being used to determine the bias; at least one second parameter is included in the second set.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

wherein C is _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap ) Wherein T is _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterizing the time interval, the values may be 16 μs, 25 μs, 34 μs, 43 μs, 52 μs, 61 μs, and T _symb Etc.

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the second parameter may be a positive value.

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

Optionally, the method for determining the bias by the terminal includes:

and the terminal determines the bias according to the detection result of whether the beam used by the CG-PUSCH resource of the first uplink transmission and the beam QCL of the detected downlink signal.

Alternatively, the detection result of whether the beam used by the CG-PUSCH resource for the first uplink transmission and the beam QCL of the detected downlink signal are determined by the base station and provided to the terminal.

Optionally, a result of detecting whether the beam used by the CG-PUSCH resource for the first uplink transmission and the beam QCL of the detected downlink signal are determined by the terminal.

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

the first way is: the terminal responds to the detection result being QCL, and the bias is determined through a first parameter in a first set;

optionally, the terminal selects a first parameter in the first set, the first parameter being used to determine the bias; at least one first parameter is included in the first set.

Optionally, the bias is configured by higher layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may be greater than or equal to 0.

The second way is: and the terminal determines the bias through a second parameter in a second set in response to the detection result not being QCL.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

wherein C is _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap ) Wherein T is _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterising time intervals, takenThe values may be 16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds, and T _symb Etc.

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

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

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

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

Optionally, the beam of the downlink signal is at least determined by one of DMRS port information of a 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 type.

Alternatively, the QCL refers to the large scale parameters of the channel experienced by the symbol on one antenna port can be inferred from the channel experienced by the symbol on another antenna port.

Alternatively, the large scale parameters may be delay spread, average delay, doppler spread, doppler shift, average gain, spatial RX parameter (spatial reception parameters), etc.

Alternatively, spatial RX parameter may be at least one of a channel correlation matrix, a transmit beam, a receive beam, a transmit/receive beam, and the like, and spatial RX parameter is used to define differences in channel large scale parameters due to variations in analog beamforming. If two antenna ports are QCL in the sense of spatial RX parameter, it is generally understood that the same beam can be used to receive both ports or to transmit both ports or to receive and transmit both ports respectively.

Wherein QCL type refers to the same spatial RX parameter for both antenna ports.

Alternatively, the COT may be obtained by the base station and provided to the terminal.

Alternatively, the COT may be obtained by the terminal.

Optionally, embodiments of the present application also contemplate: in some implementations, for configuring uplink transmission, the information related to the uplink transmission of the terminal indicated by the base station is not clear, for example, whether the base station indicates the LBT Type (e.g. Type 1/Type 2/Type 3) that needs to be performed before the uplink transmission of the terminal is not clear, which may reduce the probability of the terminal accessing the channel. If a dynamic scheduling scheme is employed, such as directly through a DCI dynamic indication, the DCI needs to be transmitted before each or several uplink transmissions are configured. An important purpose of configuring uplink transmission is to save the cost of DCI, and if the type of LBT is dynamically indicated by DCI, the design principle of configuring uplink transmission is violated, and the cost of DCI is increased.

In this way, in a further scheme of this embodiment, the base station is explicitly indicated to indicate the LBT Type (for example, type 1/Type 2/Type 3) that needs to be performed before uplink transmission of the terminal, so as to increase the probability that the terminal accesses the channel.

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

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

Alternatively, the base station may send a message alone carrying an indication channel listening mechanism.

Optionally, the base station may send a message carrying an indication channel listening mechanism to the terminal through RRC signaling or configuring uplink transmission indication information.

Therefore, the base station is explicitly indicated to indicate the LBT Type (such as Type 1/Type 2/Type 3) required to be performed before the uplink transmission of the terminal, so that the probability of the terminal accessing the channel is increased.

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

the first way is: if the first uplink transmission occurs within the COT, a second Type channel listening mechanism (Type 2channel access) or a third Type channel listening mechanism (Type 3channel access) is used.

The second way is: if the first uplink transmission occurs outside the COT, a first Type channel listening mechanism (Type 1channel access) is used.

Alternatively, the three channel listening mechanisms may be defined as follows:

type 1channel access: the channels need to be monitored for many times, and the channels are idle, so that the channels are available;

type 2channel access: only 1channel is needed to be monitored, and the channels are idle, so that the channels are available;

Type 3channel access: the channel is available without listening to the channel.

Alternatively, in another possible embodiment, the COT may be obtained by the terminal.

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

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

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

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

Third mode: if the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, a first type channel listening mechanism is used.

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

Optionally, the present embodiment further includes the following schemes:

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

Optionally, the manner in which the terminal determines the channel listening mechanism includes:

and the terminal determines a channel monitoring mechanism according to the detection result of whether the beam used by the CG-PUSCH resource of the first uplink transmission and the beam QCL of the detected downlink signal.

Optionally, when the terminal determines the channel listening mechanism according to the detection result of whether the beam used by the CG-PUSCH resource for the first uplink transmission and the beam of the detected downlink signal is QCL, the manner in which the terminal determines the channel listening mechanism may include:

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

A sixth mode: and if the beam used by the CG-PUSCH resource of the first uplink transmission and the beam of the detected downlink signal are not QCL, a first type channel monitoring mechanism is used.

Optionally, the present embodiment further includes the following schemes:

a seventh mode: if the function of whether the first uplink transmission occurs within the COT is disabled through RRC signaling, a first type channel listening mechanism is used.

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

Compared to the background art, for configuring uplink transmission, the information related to the uplink transmission of the terminal indicated by the base station is not clear, for example, it is not clear whether the base station indicates the LBT Type (e.g. Type 1/Type 2/Type 3) that needs to be performed before the uplink transmission of the terminal and whether it is not clear whether the Cyclic Prefix (CP) of the first symbol of CG-PUSCH needs to be performed before the Cyclic Prefix (CP extension, CP-ext). If a dynamic scheduling scheme is employed, such as directly through a DCI dynamic indication, the DCI needs to be transmitted before each or several uplink transmissions are configured. An important purpose of configuring uplink transmission is to save the cost of DCI, and if the type of LBT and cyclic prefix extension are dynamically indicated by DCI, the design principle of configuring uplink transmission is violated, and the cost of DCI is increased.

According to the scheme, by configuring uplink transmission, before a base station indicates the terminal to uplink transmission, specifically before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH (i.e. cyclic prefix expansion is needed), so that resource conflict among different users can be avoided through the cyclic prefix expansion, and/or the cost of DCI is saved; in addition, the Type of LBT (e.g., type 1/Type 2/Type 3) that needs to be performed before uplink transmission of the terminal is further defined, so that the probability of the terminal accessing the channel is increased.

The following illustrates the scheme of the manner in which the terminal determines the bias and channel listening mechanism:

and the terminal receives the configured uplink transmission indication information sent by the base station. The configured uplink transmission indication information is used for indicating the terminal to perform uplink transmission, and/or adding a bias before the cyclic prefix of the first symbol of the CG-PUSCH of the first uplink transmission before the first uplink transmission, and meanwhile, the configured uplink transmission indication information also indicates the type of channel monitoring mechanism that needs to be performed by the terminal before the first uplink transmission.

Or the terminal receives a message which is sent by the base station and is used for indicating the type of the channel monitoring mechanism, and the terminal definitely carries out the type of the channel monitoring mechanism before the first uplink transmission through the message which indicates 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, for example, by detecting DCI 2-0, or detects a downlink signal, or when the terminal itself obtains a COT, the terminal has uplink data to transmit on CG-PUSCH resources:

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

(1) If the CG-PUSCH resource is within COT, using a CP-extension parameter of 0us (0 microsecond); and/or using type2/3channel access;

(2) if the CG-PUSCH resource is out of COT, randomly selecting a CP-extension parameter configured by RRC; and/or using type 1channel access;

2. enabling or disabling this function through RRC signaling, then:

(1) For the case where this function is enabled, the above-described scheme 1- (1) is adopted;

(2) For the case of disabling this function, the RRC configured CP-extension parameter may be selected randomly; and/or using type 1channel access;

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

(1) If the beam is QCL, a CP-extension parameter of 0 μs is used; and/or using type2/3channel access;

optionally, by using a cyclic prefix extension CP-extension parameter of 0 μs, different users can send uplink transmissions at the same time, and mutually do not interfere with each other to monitor a channel (LBT) during each other, so that when an unlicensed spectrum is idle, different users can simultaneously succeed in LBT, and uplink transmissions are performed on different resources at the same time, so as to achieve frequency division multiplexing, and avoid uplink transmission collision between different users.

(2) If the beam is not QCL, randomly selecting the CP-extension parameter of the RRC configuration; and/or using type 1channel access.

By configuring uplink transmission, before the base station indicates the terminal to uplink transmission, specifically before the first uplink transmission, a bias is added before the cyclic prefix of the first symbol of the CG-PUSCH (i.e. cyclic prefix expansion is needed), so that resource conflict among different users is avoided and/or DCI overhead is saved; in addition, the LBT Type (for example, type 1/Type 2/Type 3) that needs to be performed before the terminal transmits uplink is further defined, so that the probability of the terminal accessing the channel can be increased through switching channel access Type.

Second embodiment:

the embodiment specifically illustrates a scenario in which the base station indicates the type of channel listening mechanism that needs to be performed by the terminal before the first uplink transmission:

optionally, the terminal performs uplink transmission based on configuration uplink transmission, receives a message sent by the base station and used for indicating the type of the channel monitoring mechanism, and explicitly performs the type of the channel monitoring mechanism before the first uplink transmission through the message indicating the type of the channel monitoring mechanism.

Optionally, if the terminal performs uplink transmission based on configuration uplink transmission, before the first uplink transmission in the uplink transmission, the terminal needs to determine to perform different types of listen before talk (Listen Before Talk, LBT) operations on the first uplink transmission, that is, determine to perform different types of channel listening mechanisms on the first uplink transmission, where LBT refers to that the terminal needs to listen to a channel before the first uplink transmission, and determine whether the channel is idle.

Optionally, the manner in which the terminal determines to perform the LBT type may include at least one of:

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

and/or if the first uplink transmission occurs outside the COT, a first Type channel listening mechanism (Type 1channel access) is used.

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

1. setting N to Ninit, wherein Ninit is a value randomly selected from 0 to CW, and then performing step 4;

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

3. listening to the channel for a first period of time, performing step 4 if the channel is idle for the first period of time, and/or performing step 5 if the channel is not idle for the first period of time;

4. stopping if n=0; and/or if N is greater than 0, performing step 2;

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

6. step 4 is performed if the channel is idle for a first period of time within a second period of time, and/or step 5 is performed if the channel is not idle for a first period of time within a second period of time.

In the above step, CW is a contention window, optionally cw=3;

second time period T _d =8us, which comprises a first period T _sl =5us, the terminal needs to perform a channel listening in a first period to determine whether the channel is idle.

Optionally, the second type channel listening mechanism comprises at least one of the following steps:

if the channel is monitored to be idle for a first period of time within a second period of time, the base station/terminal may transmit on the unlicensed spectrum.

Optionally, the third type channel listening mechanism comprises at least one of the following steps:

the base station/terminal may transmit directly on the unlicensed spectrum without listening to the channel.

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

optionally, the COT is determined by a higher layer signaling indication;

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

optionally, an interval between the downlink transmission and the configured uplink transmission is smaller than a threshold, and a time unit of the threshold is microseconds;

Optionally, the COT is determined by a 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 by the configured uplink transmission resource and the detected beam QCL of the downlink channel/signal are:

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

if the beam is not QCL, the terminal uses the channel listening mode of the first type of channel listening mechanism.

Third embodiment:

referring to fig. 4, fig. 4 is a flow chart of a third embodiment of the communication method of the present application. In this embodiment, the communication method is applied to the network device, such as the base station, which establishes communication connection with the terminal device in the network communication system, where the network device may be a base station, etc., and this embodiment uses a communication implementation scheme of the base station and the terminal (UE) as an example.

As shown in fig. 4, the communication method of the present application includes the steps of:

Alternatively, the communication terminal may be a terminal device UE, hereinafter referred to as a terminal.

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

The terminal receives or acquires the configured uplink transmission indication information, performs uplink transmission based on the configured uplink transmission indication information, and adds a bias before the cyclic prefix of the first symbol of the CG-PUSCH of the first uplink transmission before the first uplink transmission.

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

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

Alternatively, determining the offset refers to determining the length of the offset, i.e., 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 higher layer signaling.

Alternatively, in one possible embodiment, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

wherein C is _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap )，T _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterizing the time interval, the values may be 16 μs, 25 μs, 34 μs, 43 μs, 52 μs, 61 μs, and T _symb Etc.

Optionally, in a possible embodiment, the bias comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may be greater than or equal to 0.

Optionally, the first set includes at least one first parameter, different first parameters correspond to different priorities and/or identifiers, and the terminal selects the corresponding first parameters from the first set according to the priority of the transmission data. The correspondence refers to the priority and/or identification of the first parameter being the same as the priority of the transmission data.

Alternatively, the length of the offset, i.e., 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 delta _i Etc.

Optionally, the second set includes at least one second parameter, 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 correspondence refers to the priority and/or identification of the second parameter being the same as the priority of the transmission data.

Optionally, the second parameter is a positive value.

Alternatively, the COT may be obtained by the base station.

Optionally, the manner in which the terminal determines the bias may further include:

Optionally, the present embodiment further includes the following schemes:

optionally, the base station issues configuration uplink transmission indication information through RRC signaling, where the configuration uplink transmission indication information is used to instruct the terminal to perform uplink transmission, and/or before the first uplink transmission, an offset is added before a cyclic prefix of a first symbol of the CG-PUSCH of the first uplink transmission, and at the same time, in RRC signaling, a function of enabling the terminal to determine whether the first uplink transmission occurs within the COT is enabled.

Optionally, the bias is configured by higher layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may be greater than or equal to 0.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

alternatively, C _i Is an integer parameter, configured by higher layer signaling, and can be expressed as the number of symbols; t (T) _symb Is the corresponding symbol length; delta _i Can be composed of two parts (T _TA +T _Gap ) Wherein T is _TA For characterizing the length of TA, T _TA The value may be 0; t (T) _Gap For characterizing the time interval, the values may be 16 μs, 25 μs, 34 μs, 43 μs, 52 μs, 61 μs, and T _symb Etc.

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Optionally, the second parameter is a positive value.

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may 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 comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the second parameter may be a positive value.

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

Optionally, the method for determining the bias by the terminal includes:

Optionally, the bias is configured by higher layer signaling.

Optionally, the bias is determined by the following formula:

T _ext ＝C _i *T _symb -Δ _i

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

parameter C _i Parameter T _symb Parameter delta _i Etc.

Alternatively, the first parameter may 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 comprises at least one of the following parameters:

parameter C _i Parameter T _symb Parameter delta _i Etc.

Optionally, the second parameter is a positive value.

Alternatively, the COT may be obtained by the base station.

Alternatively, the COT may be obtained by the terminal.

Optionally, the beam QCL refers to QCL type D.

Optionally, the base station sends a message carrying an indication channel listening mechanism. And the terminal receives the message which is sent by the base station and carries the indication channel monitoring mechanism.

Type 2channel access: only 1 channel is needed to be monitored, and the channels are idle, so that the channels are available;

Optionally, the present embodiment further includes the following schemes:

Fourth embodiment:

in unlicensed spectrum, it is beneficial for a base station to be able to access a channel as soon as possible when it finds it free by channel Listening (LBT). Therefore, in order to ensure that the base station can transmit signals as soon as possible, PDCCH listening occasions need to occur frequently in the time domain. However, frequent monitoring of PDCCH causes an increase in power consumption on the terminal side, which is disadvantageous to the terminal. To solve this problem, a search space set group switching mechanism (SSSG switching) was devised. This mechanism balances the channel access possibilities at the base station side and the power consumption of the terminal side PDCCH listening. With multislot PDCCH listening introduced, PDCCH listening is implemented on a slot group basis. The search space is configured based on a group of slots, e.g., the period of PDCCH listening occasions within the search space is in units of a group of slots. The search space set group switching also needs to be based on the time slot groups, otherwise, the terminal may detect different search space set groups in one time slot group, which may exceed the PDCCH blind solution capability of the terminal.

Optionally, the search space set group switch is based on a time slot group, and the terminal listens to the PDCCH on one search space set group and its associated PDCCH listening occasion within one time slot group.

When the search space set group switching is based on a 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 a search space set group 0 and a search space set group 1, and the terminal detects a downlink control channel carrying DCI 2_0:

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

the second way is: if the terminal detects DCI 2_0 and the search space set group switch flag field in DCI 2_0 is set to 1, the terminal P after receiving the last symbol of DCI 2_0 _switch The first time slot group after the number of symbols starts to monitor 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 the value of a timer to be a fixed value, wherein the fixed value is provided by high-layer signaling;

Third mode: if the terminal is listening to the PDCCH corresponding to the search space set group 1, the terminal occupies P after the expiration of the timer or after the last symbol of the time occupied by the residual channel indicated by DCI2_0 _switch The first slot group after a symbol starts listening to the PDCCH corresponding to the search space set group 0 and stops listening to the PDCCH corresponding to the search space set group 1.

Fourth mode: if the terminal detects a DCI format at the PDCCH monitoring occasion corresponding to the monitoring search space set group 0, the terminal starts P after receiving the last symbol of the DCI format _switch The first time slot group after the number of symbols starts to monitor the PDCCH corresponding to the search space set group 1, and stops to monitor the PDCCH corresponding to the search space set group 0, when the terminal detects a DCI format on the PDCCH monitoring occasion in any search space set, the terminal sets the value of a timer as a fixed value, and the fixed value is provided by high-layer signaling;

a fifth mode: if the terminal is listening to the PDCCH corresponding to the search space set group 1, the terminal occupies the last time after the expiration of the timer or the remaining channel indicated by DCI2_0P after one symbol _switch The first slot group after a symbol starts listening to the PDCCH corresponding to the search space set group 0 and stops listening to the PDCCH corresponding to the search space set group 1.

The implementation flow of the communication between the network device (base station) and the terminal device (terminal) in this embodiment may be shown in fig. 5.

As shown in fig. 5, the main interaction flow includes:

step A: the network equipment sends configuration uplink transmission indication information;

and (B) step (B): the terminal equipment performs uplink transmission based on the configuration uplink transmission indication information;

step C: before the first uplink transmission, the terminal equipment adds a bias before the cyclic prefix of the first symbol of the CG-PUSCH;

step D: before the first uplink transmission, the terminal equipment determines a channel monitoring mechanism.

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

The application further provides a communication device, please refer to fig. 6, fig. 6 is a schematic diagram of functional modules of the communication device.

The application communication device is applied to terminal equipment, and the application communication device can comprise:

Optionally, the processing module further includes:

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

Optionally, the function implementation of each module in the above communications device corresponds to each step in the above communications method embodiment, and the function and implementation process of each module are not described herein in detail.

The application further provides a communication device, please refer to fig. 7, fig. 7 is a schematic diagram of functional modules of the communication device.

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

The embodiment of the application also provides a communication device, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to realize the steps of the communication method in any embodiment.

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 context needs to be combined. The communication device, when being the terminal device, may specifically be: terminal devices such as cell phones, tablet computers, notebook computers, palm top computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and the like. Alternatively, the communication device may be specifically a base station or the like when it is the network device.

The embodiments of the present application also provide a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the communication method in any of the embodiments described above.

Embodiments of the communication device and the computer readable storage medium provided in the present application may include all technical features of any one of the foregoing embodiments of the communication method, and the expansion and explanation of the description are substantially the same as those of each embodiment of the foregoing method, which is not repeated herein.

The present embodiments also provide a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method in the various possible implementations as above.

The embodiments also provide a chip including a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that a device on which the chip is mounted performs the method in the above possible embodiments.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

It can be understood that the above scenario is merely an example, and does not constitute a limitation on the application scenario of the technical solution provided in the embodiments of the present application, and the technical solution of the present application may also be applied to other scenarios. For example, as one of ordinary skill in the art can know, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The units in the device of the embodiment of the application can be combined, divided and pruned according to actual needs.

In this application, the same or similar term concept, technical solution, and/or application scenario description will generally be described in detail only when first appearing, and when repeated later, for brevity, will not generally be repeated, and when understanding the content of the technical solution of the present application, etc., reference may be made to the previous related detailed description thereof for the same or similar term concept, technical solution, and/or application scenario description, etc., which are not described in detail later.

In this application, the descriptions of the embodiments are focused on, and the details or descriptions of one embodiment may be found in the related descriptions of other embodiments.

The technical features of the technical solutions of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the present application.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to perform the method of each embodiment of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, storage disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)), among others.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structures or equivalent flow modifications made by the specification and drawings of the present application or indirectly applied to other related technical fields are included in the scope of the claims of the present application.

Claims

1. A method of communication, the method comprising:

search space set group switching is based on time slot groups, and the communication terminal listens to the PDCCH on one search space set group and its associated PDCCH listening occasion within one time slot group.

2. The method of claim 1, wherein the communication terminal is configured with a search space set group 0 and a search space set group 1, wherein the communication terminal detects a downlink control channel carrying DCI 2_0, wherein the communication terminal listens for PDCCH on a search space set group and its associated PDCCH listening occasion in a time slot set comprises at least one of:

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

If the terminal detects DCI2_0 and the search space set group switch flag field in DCI2_0 is set to 1, the terminal P after receiving the last symbol of DCI2_0 _switch The first time slot group after the number of symbols starts to monitor 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 the value of a timer to be a fixed value, wherein the fixed value is provided by high-layer signaling;

if the terminal is listening to the PDCCH corresponding to the search space set group 1, the terminal occupies P after the expiration of the timer or after the last symbol of the time occupied by the residual channel indicated by DCI2_0 _switch The first slot group after a symbol starts listening to the PDCCH corresponding to search space set group 0 and stops listening to the search space setPDCCH corresponding to group 1.

If the terminal detects a DCI format at the PDCCH monitoring occasion corresponding to the monitoring search space set group 0, the terminal starts P after receiving the last symbol of the DCI format _switch The first time slot group after the number of symbols starts to monitor the PDCCH corresponding to the search space set group 1, and stops to monitor the PDCCH corresponding to the search space set group 0, when the terminal detects a DCI format on the PDCCH monitoring occasion in any search space set, the terminal sets the value of a timer as a fixed value, and the fixed value is provided by high-layer signaling;

If the terminal is listening to the PDCCH corresponding to the search space set group 1, the terminal occupies P after the expiration of the timer or after the last symbol of the time occupied by the residual channel indicated by DCI2_0 _switch The first slot group after a symbol starts listening to the PDCCH corresponding to the search space set group 0 and stops listening to the PDCCH corresponding to the search space set group 1.

3. A method of communication, comprising the steps of:

4. A method according to claim 3, wherein the step S10 comprises:

5. The method of claim 4, wherein the manner in which the communication terminal determines the bias comprises at least one of:

6. The method of claim 5, wherein determining the manner of the COT comprises at least one of:

and determining the COT according to the received downlink control information.

7. The method as recited in claim 5, further comprising:

8. The method of claim 7, wherein the manner in which the communication terminal determines the bias comprises at least one of:

9. The method of claim 4, wherein the manner in which the communication terminal determines the bias comprises:

10. The method of claim 9, wherein the manner in which the communication terminal determines the offset comprises:

11. The method according to any of the claims 3 to 10, characterized in that the way the communication terminal determines the channel listening mechanism comprises at least one of the following:

12. The method according to any one of claims 3 to 10, further comprising, prior to the step S10:

13. A method of communication, comprising the steps of:

14. The method of claim 13, comprising at least one of:

and the configuration uplink transmission indication information is sent through RRC signaling.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

and sending a message carrying an indication channel monitoring mechanism.

16. A communication device, comprising: a memory and a processor, the memory having stored thereon a computer program which, when executed by the processor, implements the steps of the communication method according to any of claims 1 to 15.

17. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the communication method according to any of claims 1 to 15.