WO2021068874A1 - 随机接入、信息发送方法、终端及网络设备 - Google Patents

随机接入、信息发送方法、终端及网络设备 Download PDF

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Publication number
WO2021068874A1
WO2021068874A1 PCT/CN2020/119898 CN2020119898W WO2021068874A1 WO 2021068874 A1 WO2021068874 A1 WO 2021068874A1 CN 2020119898 W CN2020119898 W CN 2020119898W WO 2021068874 A1 WO2021068874 A1 WO 2021068874A1
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WIPO (PCT)
Prior art keywords
network device
random access
cot
terminal
indication information
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PCT/CN2020/119898
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English (en)
French (fr)
Inventor
姜蕾
吴凯
贺子健
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维沃移动通信有限公司
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Publication of WO2021068874A1 publication Critical patent/WO2021068874A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a random access and information sending method, terminal and network equipment.
  • UE User Equipment
  • category 4 category 4
  • LBT listen before talk
  • the embodiments of the present disclosure provide a random access and information sending method, a terminal, and a network device, so as to solve the problem of low random access efficiency of the terminal in an unlicensed frequency band in related technologies.
  • embodiments of the present disclosure provide a random access method applied to a terminal, including:
  • the first indication information use the corresponding LBT type to perform channel sensing
  • Random access is performed when the channel is detected to be empty.
  • the embodiments of the present disclosure provide an information sending method, which is applied to a network device, and includes:
  • the first indication information is used for the LBT type used when the terminal obtains the pre-random access channel sensing.
  • a terminal including:
  • a receiving module configured to receive first indication information from a network device
  • the listening module is configured to use the corresponding LBT type to perform channel listening according to the first indication information
  • the random access module is used to perform random access when the channel is detected to be empty.
  • embodiments of the present disclosure provide a network device, including:
  • a sending module configured to send first indication information to the terminal
  • the first indication information is used for the LBT type used when the terminal obtains the pre-random access channel sensing.
  • embodiments of the present disclosure provide a communication device, including a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the computer program is processed by the processor.
  • the device executes, it implements the steps of the above random access method, or implements the steps of the above information sending method.
  • the communication device can be a terminal or a network device.
  • embodiments of the present disclosure provide a computer-readable storage medium on which a computer program is stored, wherein the computer program is executed by a processor to implement the steps of the random access method, or to implement the information sending Method steps.
  • the corresponding LBT type is used to perform channel listening, and random access is performed when the channel is detected to be empty, so that The terminal performing random access flexibly uses the LBT type obtained based on the network device's instruction to perform channel sensing, thereby reducing the time delay of PRACH sending information and improving the efficiency of random access.
  • FIG. 1 is a flowchart of a random access method according to an embodiment of the disclosure
  • FIG. 2 is a flowchart of an information sending method according to an embodiment of the disclosure
  • FIG. 3 is one of schematic structural diagrams of a terminal according to an embodiment of the disclosure.
  • FIG. 4 is one of the schematic structural diagrams of the network device of the embodiment of the disclosure.
  • FIG. 5 is the second structural diagram of a terminal according to an embodiment of the disclosure.
  • Fig. 6 is the second structural diagram of a network device according to an embodiment of the disclosure.
  • Unlicensed bands can be used as a supplement to licensed bands (licensed bands) to help operators expand their services.
  • unlicensed frequency bands can work in 5GHz, 37GHz and 60GHz frequency bands.
  • the large bandwidth (80MHz or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of the base station and UE.
  • unlicensed frequency bands are shared by multiple technologies (RATs), such as WiFi, radar, LTE-LAA, etc., in some countries or regions, unlicensed frequency bands must be used in compliance with regulations to ensure that all devices are fair
  • RATs such as WiFi, radar, LTE-LAA, etc.
  • LBT listen before talk
  • MCOT Maximum Channel occupation time
  • ED Energy Detection
  • the transmission node may be a base station, UE, WiFi access point (Access Point, AP), and so on. After the transmission node starts transmission, the occupied channel time COT cannot exceed MCOT.
  • the type of LBT can be divided into category 1, category 2, and category 4.
  • Category 1 LBT means that the transmission node does not do LBT, that is, no LBT or immediate transmission.
  • Category 2 LBT is one-shot LBT, that is, the transmitting node performs LBT once before transmission, and the channel is empty if the transmission is performed, and the channel is busy if the transmission is not performed.
  • Category 4 LBT is a back-off-based channel listening mechanism. When the transmission node detects that the channel is busy, it performs a back-off and continues to listen until it hears that the channel is empty.
  • Category 4 LBT contains multiple priority levels, and for each priority level, the maximum channel occupation time is different. As shown in Table 1 and Table 2 below.
  • T mcot,p in Table 1 above represents the maximum channel occupation time of downlink transmission of corresponding priority p.
  • T ulmcot,p in Table 2 above represents the maximum channel occupation time of uplink transmission of corresponding priority p.
  • m p represents the coefficient corresponding to the corresponding priority p.
  • CW p represents the value of the contention window corresponding to the corresponding priority p.
  • CW min,p represents the minimum value of the contention window corresponding to the corresponding priority p.
  • CW max,p represents the maximum value of the contention window corresponding to the corresponding priority p.
  • PRACH preamble format various types of physical random access channel (Physical Random Access Channel, PRACH) preamble format (PRACH preamble format) are defined. Different formats correspond to different preamble sequence lengths, interval CP lengths, and time domain lengths. And so on, to adapt to different coverage areas. Among them, the total duration of PRACH in various formats is different. For each PRACH preamble format. The corresponding channel access priority can be agreed upon. For each cell, the network can configure a PRACH preamble format, 64 preamble sequences, 64 preambles corresponding to different cyclic shift values, and the same or different root sequence number values.
  • PRACH preamble format Physical Random Access Channel
  • the wireless communication system in the embodiment of the present disclosure includes a terminal and a network device.
  • the terminal can also be called a terminal device or UE, and the terminal can be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), and a mobile Internet device (Mobile Internet Device).
  • a terminal-side devices such as Internet Device (MID), Wearable Device (Wearable Device), or vehicle-mounted device, it should be noted that the specific types of terminals are not limited in the embodiments of the present disclosure.
  • the network equipment may be a base station or a core network, where the above-mentioned base station may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN access point, or Other access points, etc.), the base station can be called Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set, BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, or any other in the field Appropriate terms, as long as they achieve the same technical effect, are not limited to specific technical vocabulary.
  • BTS Base Transceiver Station
  • ESS Extended Service Set
  • the embodiments of the present disclosure are applicable to scenarios where a terminal randomly accesses a network device.
  • the random access process of the terminal may be an initial access process triggered by the network device.
  • the network device can trigger the initial access procedure of the terminal through the control information in the Physical Downlink Control Channel (PDCCH).
  • PDCH Physical Downlink Control Channel
  • FIG. 1 is a flowchart of a random access method provided by an embodiment of the present disclosure. The method is applied to a terminal. As shown in FIG. 1, the method includes the following steps:
  • Step 101 Receive first indication information from a network device.
  • the first indication information may indicate at least one of the following:
  • the remaining time of the channel occupation time (Channel Occupancy Time, COT) of the network device (Channel Occupancy Time, COT) of the network device;
  • the end time of the COT of the network device is the end time of the COT of the network device.
  • the first indication information indicates the LBT type of the terminal, that is, the LBT type during random access is indicated to the terminal, so that the terminal is suitable for In this case, the COT of the network device can be shared.
  • the first indication information may indicate at least one of the remaining time of the COT of the network device and the end time of the COT of the network device, to The terminal determines whether to share the COT of the network device according to the COT related information of the network device.
  • the above-mentioned first indication information may be sent to the terminal at the same time when the network device triggers the random access (RACH) process of the terminal.
  • RACH random access
  • Step 102 According to the first indication information, use the corresponding LBT type to perform channel sensing.
  • the LBT type used in this step may be LBT type 2 or LBT type 4.
  • the LBT type 2 is one-shot LBT (one-shot LBT), that is, transmission is performed when the channel is detected to be empty, otherwise no transmission is performed.
  • the LBT type 4 is a back-off-based channel listening mechanism, that is, back-off is performed when the channel is heard to be busy, and channel listening is continued until the channel is heard to be empty.
  • the terminal adopts LBT type 2 for channel sensing; and in the case of not sharing the COT of the network device, the terminal adopts LBT type 4 for channel sensing.
  • LBT type 2 can be a short-duration fast listening method, it can enable the terminal to use the shared COT to quickly initiate a random access process when sharing the COT of the network device, reducing the delay of information transmission, thereby improving random access effectiveness.
  • Step 103 Perform random access when the channel is detected to be empty.
  • the terminal that performs random access can flexibly use the LBT type obtained based on the network device instruction to perform channel sensing, thereby reducing the time delay of PRACH sending information and improving the efficiency of random access.
  • the LBT type of the terminal indicated by the above-mentioned first indication information may be LBT type 2 or LBT type 4.
  • the first indication information indicates LBT type 2; and when the network device does not allow the terminal to share its own COT, the first indication information indicates LBT type 4.
  • the terminal may be in the time domain according to the random access opportunity (RACH Occasion, RO)
  • RACH Occasion, RO random access opportunity
  • the LBT type 2 is used for channel listening.
  • the terminal can use the shared COT to quickly initiate a random access process when sharing the COT of the network device, thereby reducing the delay of information transmission and improving the efficiency of random access.
  • step 102 may include:
  • the location of the random access timing in the time domain is within the remaining time of the COT of the network device;
  • the location of the random access timing in the time domain is outside the remaining time of the COT of the network device;
  • At least a part of the continuous random access resources is outside the remaining time of the COT of the network device.
  • the terminal can determine the remaining time of the COT of the network device based on the interaction with the network device.
  • the gNB when the gNB triggers the UE’s RACH process, it also indicates to the UE the remaining time of the gNB’s COT or the end time of the COT, the UE can use the position of its RO in the time domain and the remaining time of the gNB’s COT or The relationship between the end time of the COT determines whether to share the COT of the gNB. If the position of the UE's RO in the time domain falls within the remaining time of the gNB's COT, the UE uses LBT type 2 (Cat2) for channel sensing, and when it hears that the channel is empty, performs random access .
  • Cat2 LBT type 2
  • the UE uses LBT type 4 (Cat4) for channel detection, and when the channel is detected to be empty, it performs random access.
  • LBT type 4 (Cat4) for channel detection, and when the channel is detected to be empty, it performs random access.
  • the priority of LBT type 4 is determined by the UE itself, and different priorities can be adopted according to the configured PRACH preamble format. For example, PRACH preamble format 1 or PRACH preamble format 2 adopts priority 2, and other PRACH preamble formats adopt priority 1.
  • the UE may also decide whether to share the COT of the gNB according to whether there is at least a complete continuous RACH resource that falls within the remaining time of the COT of the gNB. If the UE has at least a complete continuous RACH resource that falls within the remaining time of the COT of the gNB, the UE adopts LBT type 2 for channel sensing and shares the COT of the gNB. Optionally, the UE uses LBT type 2 for channel sensing only when sending PRACH on the RO in the first segment of consecutive RACH resources after receiving the trigger indication.
  • the UE LBT type 4 is used for channel detection, and when the channel is detected to be empty, random access is performed. At this time, the priority of LBT type 4 is determined by the UE itself.
  • FIG. 2 is a flowchart of an information sending method provided by an embodiment of the present disclosure. The method is applied to a network device. As shown in FIG. 2, the method includes the following steps:
  • Step 201 Send the first instruction information to the terminal.
  • the first indication information is used for the LBT type used when the terminal obtains the pre-random access channel sensing. In this way, the terminal can use the corresponding LBT type to perform channel detection, and perform random access when the channel is detected to be empty.
  • the first indication information may indicate at least one of the following:
  • the end time of the COT of the network device is the end time of the COT of the network device.
  • the first indication information indicates the LBT type of the terminal, that is, indicates the LBT type during random access to the terminal, so that the terminal can share COT of network equipment.
  • the first indication information may indicate at least one of the remaining time of the COT of the network device and the end time of the COT of the network device, to The terminal determines whether to share the COT of the network device according to the COT related information of the network device.
  • the above-mentioned first indication information may be sent to the terminal at the same time when the network device triggers the random access (RACH) process of the terminal.
  • RACH random access
  • the terminal performing random access by sending the first indication information to the terminal, the terminal performing random access can use the corresponding LBT type to perform channel sensing, and perform random access when the channel is detected to be empty.
  • a terminal performing random access can use the shared COT to quickly initiate a random access process in the case of sharing the COT of the network equipment, thereby reducing the time delay of PRACH sending information and improving the efficiency of random access.
  • the LBT type of the terminal indicated by the foregoing first indication information may be LBT type 2 or LBT type 4.
  • the first indication information indicates LBT type 2; and when the network device does not allow the terminal to share its own COT, the first indication information indicates LBT type 4.
  • the gNB may indicate the LBT type for the UE to initiate the RACH process through indication information in Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the indication information may be a newly added domain in the DCI or an existing domain in the DCI, and at this time, the existing domain has to be re-interpreted.
  • uplink (UL) or additional uplink (SUL) indicator (UL/SUL indicator) in DCI format 1_0, or reserved bits (reserved bits) can be used to indicate the LBT type.
  • UL/SUL indicator uplink
  • reserved bits reserved bits
  • the network device may determine whether to allow the terminal to share its own COT according to whether the continuous RACH resources configured for the terminal all fall within the remaining time of its own COT, And indicate the LBT type of random access to the terminal. That is, when the remaining time of the COT of the network device includes at least a complete continuous random access resource, the first indication information indicates LBT type 2; or, the remaining time of the COT of the network device is not complete In the case of continuous random access resources, the first indication information indicates LBT type 4.
  • the gNB when the gNB triggers the RACH process of the UE, it also indicates the LBT type of random access to the UE. If at least a complete continuous RACH resource is included in the remaining time of the COT of the gNB, that is, all RO positions in the time domain in this continuous RACH resource fall within the remaining time of the COT of the gNB, then the gNB Allow the UE to share its COT, and send indication information indicating LBT type 2 to the UE. After receiving the indication information, the UE may use LBT type 2 to perform channel sensing according to the indication information, and perform random access when it detects that the channel is empty. Optionally, the UE uses LBT type 2 for channel sensing only when sending PRACH on the RO in the first segment of consecutive RACH resources after receiving the trigger indication.
  • the gNB If there is no complete and continuous random access resource in the remaining time of the COT of the gNB, that is, there is no complete and continuous RACH resource in the time domain position of all RO resources falling within the remaining time of the COT of the gNB If the gNB does not allow the UE to share its COT, it sends indication information indicating LBT type 4 to the UE. After receiving the indication information, the UE can use LBT type 4 to perform channel detection according to the indication information, and perform random access when it detects that the channel is empty. Among them, the priority of this LBT type 4 is determined by the UE, and different priorities can be adopted according to the configured PRACH preamble format. For example, PRACH preamble format 1 or PRACH preamble format 2 adopts priority 2, and other PRACH preamble formats adopt priority 1.
  • FIG. 3 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • the terminal 30 includes:
  • the receiving module 31 is configured to receive first indication information from a network device
  • the listening module 32 is configured to use the corresponding LBT type to perform channel listening according to the first indication information
  • the random access module 33 is used to perform random access when the channel is detected to be empty.
  • the first indication information indicates at least one of the following:
  • the LBT type of the terminal is the LBT type of the terminal.
  • the end time of the COT of the network device is the end time of the COT of the network device.
  • the LBT type is LBT type 2 or LBT type 4.
  • the listening module 32 is specifically configured to:
  • the location of the random access timing in the time domain is within the remaining time of the COT of the network device;
  • LBT type 4 is used for channel listening:
  • the position of the random access timing in the time domain is outside the remaining time of the COT of the network device
  • At least a part of the continuous random access resources is outside the remaining time of the COT of the network device.
  • the terminal 30 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 1 and achieve the same beneficial effects. In order to avoid repetition, details are not described herein again.
  • FIG. 4 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure. As shown in FIG. 4, the network device 40 includes:
  • the sending module 41 is configured to send first indication information to the terminal
  • the first indication information is used for the LBT type used when the terminal obtains the pre-random access channel sensing.
  • the first indication information indicates at least one of the following:
  • the LBT type of the terminal is the LBT type of the terminal.
  • the end time of the COT of the network device is the end time of the COT of the network device.
  • the first indication information indicates the LBT type of the terminal
  • the first indication information indicates LBT type 2;
  • the first indication information indicates LBT type 4.
  • the network device 40 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 2 and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the embodiment of the present disclosure also provides a communication device, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor, wherein the computer program is executed when the processor is executed
  • a communication device including a processor, a memory, and a computer program stored on the memory and capable of running on the processor, wherein the computer program is executed when the processor is executed
  • the communication device may be a terminal or a network device.
  • FIG. 5 is a schematic diagram of the hardware structure of a terminal for implementing various embodiments of the present disclosure.
  • the terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, The display unit 506, the user input unit 507, the interface unit 508, the memory 509, the processor 510, and the power supply 511 and other components.
  • the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
  • the radio frequency unit 501 is configured to receive first indication information from a network device
  • the processor 510 is configured to use the corresponding LBT type to perform channel detection according to the first indication information; and perform random access when the channel is detected to be empty.
  • the terminal 500 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 1 and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the radio frequency unit 501 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and processed by the processor 510; in addition, Uplink data is sent to the base station.
  • the radio frequency unit 501 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.
  • the radio frequency unit 501 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 502, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 503 may convert the audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output it as sound. Moreover, the audio output unit 503 may also provide audio output related to a specific function performed by the terminal 500 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 504 is used to receive audio or video signals.
  • the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042.
  • the graphics processor 5041 is configured to monitor images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode.
  • the data is processed.
  • the processed image frame may be displayed on the display unit 506.
  • the image frame processed by the graphics processor 5041 may be stored in the memory 509 (or other storage medium) or sent via the radio frequency unit 501 or the network module 502.
  • the microphone 5042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 501 for output in the case of a telephone call mode.
  • the terminal 500 also includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 5061 and/or when the terminal 500 is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 505 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.
  • the display unit 506 is used to display information input by the user or information provided to the user.
  • the display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 507 can be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 507 includes a touch panel 5071 and other input devices 5072.
  • the touch panel 5071 also known as a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 5071 or near the touch panel 5071. operating).
  • the touch panel 5071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 510, the command sent by the processor 510 is received and executed.
  • the touch panel 5071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 507 may also include other input devices 5072.
  • other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 5071 can be overlaid on the display panel 5061.
  • the touch panel 5071 detects a touch operation on or near it, it is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 determines the type of the touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 5061.
  • the touch panel 5071 and the display panel 5061 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 5071 and the display panel 5061 can be integrated. Realize the input and output functions of the terminal, the specifics are not limited here.
  • the interface unit 508 is an interface for connecting an external device with the terminal 500.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 508 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 500 or may be used to communicate between the terminal 500 and the external device. Transfer data between.
  • the memory 509 can be used to store software programs and various data.
  • the memory 509 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 509 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 510 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. It executes by running or executing software programs and/or modules stored in the memory 509, and calling data stored in the memory 509. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
  • the processor 510 may include one or more processing units; optionally, the processor 510 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface and application programs, etc.
  • the adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 510.
  • the terminal 500 may also include a power source 511 (such as a battery) for supplying power to various components.
  • a power source 511 such as a battery
  • the power source 511 may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
  • terminal 500 may also include some functional modules not shown, which will not be repeated here.
  • FIG. 6 is a schematic diagram of the hardware structure of a network device that implements various embodiments of the present disclosure.
  • the network device 60 includes, but is not limited to, a bus 61, a transceiver 62, an antenna 63, a bus interface 64, and a processor. 65 and memory 66.
  • the network device 60 further includes: a computer program stored on the memory 66 and capable of running on the processor 65.
  • a computer program stored on the memory 66 and capable of running on the processor 65.
  • the following steps are implemented:
  • the first indication information is used for the LBT type used when the terminal obtains the pre-random access channel sensing.
  • the transceiver 62 is used to receive and send data under the control of the processor 65.
  • the network device 60 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 2 and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • bus 61 can include any number of interconnected buses and bridges, bus 61 will include one or more processors represented by processor 65 and memory represented by memory 66 The various circuits are linked together.
  • the bus 61 can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface 64 provides an interface between the bus 61 and the transceiver 62.
  • the transceiver 62 may be one element or multiple elements, such as multiple receivers and transmitters, and provide a unit for communicating with various other devices on the transmission medium.
  • the data processed by the processor 65 is transmitted on the wireless medium through the antenna 63, and further, the antenna 63 also receives the data and transmits the data to the processor 65.
  • the processor 65 is responsible for managing the bus 61 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 66 may be used to store data used by the processor 65 when performing operations.
  • the processor 65 may be a CPU, ASIC, FPGA or CPLD.
  • the embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the method embodiment shown in FIG. 1 or FIG. 2 is implemented, and To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disk.
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本公开提供一种随机接入、信息发送方法、终端及网络设备，随机接入方法包括：从网络设备接收第一指示信息；根据第一指示信息，采用对应的LBT类型进行信道侦听；当侦听到信道为空时进行随机接入。

Description

随机接入、信息发送方法、终端及网络设备
相关申请的交叉引用
本申请主张在2019年10月12日在中国提交的中国专利申请号No.201910968544.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种随机接入、信息发送方法、终端及网络设备。
背景技术
在非授权频段上，终端，如用户设备(User Equipment，UE)，在初始接入时，需先采用类型4(category4)的先听后说(listen before talk，LBT)对信道进行侦听，然后当侦听到信道为空时进行随机接入。由此，相关技术中UE进行随机接入时，可能无法及时发送相关信息比如随机接入前导码preamble，造成随机接入效率低。
发明内容
本公开实施例提供一种随机接入、信息发送方法、终端及网络设备，以解决相关技术中终端在非授权频段的随机接入效率低的问题。
为了解决上述技术问题，本公开实施例是这样实现的：
第一方面，本公开实施例提供一种随机接入方法，应用于终端，包括：
从网络设备接收第一指示信息；
根据所述第一指示信息，采用对应的LBT类型进行信道侦听；
当侦听到信道为空时进行随机接入。
第二方面，本公开实施例提供一种信息发送方法，应用于网络设备，包括：
向终端发送第一指示信息；
其中，所述第一指示信息用于所述终端获得随机接入前信道侦听时采用 的LBT类型。
第三方面，本公开实施例提供了一种终端，包括：
接收模块，用于从网络设备接收第一指示信息；
侦听模块，用于根据所述第一指示信息，采用对应的LBT类型进行信道侦听；
随机接入模块，用于当侦听到信道为空时进行随机接入。
第四方面，本公开实施例提供了一种网络设备，包括：
发送模块，用于向终端发送第一指示信息；
其中，所述第一指示信息用于所述终端获得随机接入前信道侦听时采用的LBT类型。
第五方面，本公开实施例提供了一种通信设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述计算机程序被所述处理器执行时实现上述随机接入方法的步骤，或者实现上述信息发送方法的步骤。该通信设备可为终端或者网络设备。
第六方面，本公开实施例提供了一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现上述随机接入方法的步骤，或者实现上述信息发送方法的步骤。
本公开实施例中，通过从网络设备接收第一指示信息，根据所述第一指示信息，采用对应的LBT类型进行信道侦听，并当侦听到信道为空时进行随机接入，可以使得进行随机接入的终端灵活采用基于网络设备指示得到的LBT类型进行信道侦听，从而减少PRACH发送信息的时延，提高随机接入效率。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例的一随机接入方法的流程图；
图2为本公开实施例的一信息发送方法的流程图；
图3为本公开实施例的终端的结构示意图之一；
图4为本公开实施例的网络设备的结构示意图之一；
图5为本公开实施例的终端的结构示意图之二；
图6为本公开实施例的网络设备的结构示意图之二。
具体实施方式
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
为了便于理解本公开实施例，首先说明以下内容。
非授权频段(unlicensed band)可以作为授权频段(licensed band)的补充帮助运营商对服务进行扩容。为了与新无线(New Radio，NR)部署保持一致并尽可能的最大化基于NR的非授权接入，非授权频段可以工作在5GHz、37GHz和60GHz频段。非授权频段的大带宽(80MHz或者100MHz)能够减小基站和UE的实施复杂度。由于非授权频段由多种技术(RATs)共用，例如WiFi、雷达、LTE-LAA等，因此在某些国家或者区域，非授权频段在使用时必须符合规则(regulation)，以保证所有设备可以公平的使用该资源，例如LBT(listen before talk)，最大信道占用时间(Maximum Channel Occupancy Time，MCOT)等规则。当传输节点需要发送信息时，需要先进行LBT，对周围的节点进行功率检测(Energy Detection，ED)，当检测到的功率低于一个门限时，认为信道为空(idle)，传输节点可以进行发送。反之，则认为信道为忙，传输节点不能进行发送。传输节点可以是基站、UE、WiFi访问接入点(Access Point，AP)等等。传输节点开始传输后，占用的信道时间COT不能超过MCOT。
其中，LBT的类型(category)可以分为category 1、category 2和category4。Category1 LBT是传输节点不做LBT，即no LBT或者直接传输(immediate transmission)。Category 2 LBT是one-shot LBT，即传输节点在传输前做一次 LBT，信道为空则进行传输，信道为忙则不传输。Category 4 LBT是基于回退(back-off)的信道侦听机制，当传输节点侦听到信道为忙时，进行回退，继续做侦听，直到侦听到信道为空。Category 4 LBT包含多种优先级，针对每个优先级，最大信道占用时间不同。如下表1和表2所示。
表1信道接入优先级(Channel Access Priority Class)
Figure PCTCN2020119898-appb-000001
表2上行的信道接入优先级
Figure PCTCN2020119898-appb-000002
其中，上述表1中的T mcot,p表示相应优先级p的下行传输最大信道占用时间。上述表2中的T ulmcot,p表示相应优先级p的上行传输最大信道占用时间。m p表示相应优先级p对应的系数。CW p表示相应优先级p对应的竞争窗的值。CW min,p表示相应优先级p对应的竞争窗的最小值。CW max,p表示相应优先级p对应的竞争窗的最大值。
在NR中定义了各种不同类型的物理随机接入信道(Physical Random Access Channel，PRACH)前导码格式(PRACH preamble format)，不同的格式对应着不同的preamble序列长度、间隔CP长度，时域长度等，适应于不同的覆盖的范围。其中，各种格式的PRACH的总的持续时间不同。针对每一个PRACH preamble format。可协议约定其对应的信道接入的优先级。对于每个小区，网络可以配置一个PRACH preamble format，64个preamble序列，64个preamble对应于不同的循环移位值，及相同或者不同的根序号值。
可选的，本公开实施例无线通信系统包括终端和网络设备。其中，终端 也可以称作终端设备或者UE，终端可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant，PDA)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备等终端侧设备，需要说明的是，在本公开实施例中并不限定终端的具体类型。网络设备可以是基站或核心网，其中，上述基站可以是5G及以后版本的基站(例如：gNB、5G NR NB等)，或者其他通信系统中的基站(例如：eNB、WLAN接入点、或其他接入点等)，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点或所述领域中其他某个合适的术语，只要达到相同的技术效果，不限于特定技术词汇。
本公开实施例适用于终端随机接入网络设备的场景，进一步来说，此终端的随机接入过程可是由网络设备触发的初始接入过程。比如，网络设备可通过物理下行控制信道(Physical Downlink Control Channel，PDCCH)中的控制信息触发终端的初始接入过程。
请参见图1，图1是本公开实施例提供的一种随机接入方法的流程图，该方法应用于终端，如图1所示，该方法包括如下步骤：
步骤101：从网络设备接收第一指示信息。
可选的，该第一指示信息可以指示以下至少一项：
终端的LBT类型；
网络设备的信道占用时间(Channel Occupancy Time，COT)的剩余时间；
网络设备的COT的结束时间。
一种实施方式中，在由网络设备确定是否允许终端共享自身的COT的情况下，该第一指示信息指示终端的LBT类型，即向终端指示随机接入时的LBT类型，以使得终端在适合情况下可以共享网络设备的COT。
另一种实施方式中，在由终端确定是否共享网络设备的COT的情况下，该第一指示信息可指示网络设备的COT的剩余时间和网络设备的COT的结束时间中的至少一者，以由终端根据网络设备的COT相关信息确定是否共享 该网络设备的COT。
另一种实施方式中，上述的第一指示信息可以是：网络设备在触发终端的随机接入(RACH)过程时同时发送给该终端的。
步骤102：根据所述第一指示信息，采用对应的LBT类型进行信道侦听。
可选的，此步骤中采用的LBT类型可为LBT类型2或者LBT类型4。该LBT类型2为一次的LBT(one-shot LBT)，即当侦听到信道为空时进行传输，否则不进行传输。该LBT类型4是基于回退(back-off)的信道侦听机制，即当侦听到信道为忙时进行回退，并继续进行信道侦听，直到侦听到信道为空。
可选地，在共享网络设备的COT的情况下，终端采用LBT类型2进行信道侦听；而在不共享网络设备的COT的情况下，终端采用LBT类型4进行信道侦听。这样由于LBT类型2可为短时长的快速侦听方式，可以使得终端在共享网络设备的COT的情况下使用共享的COT快速发起随机接入过程，减少信息发送的时延，从而提高随机接入效率。
步骤103：当侦听到信道为空时进行随机接入。
本公开实施例的随机接入方法，通过从网络设备接收第一指示信息，根据所述第一指示信息，采用对应的LBT类型进行信道侦听，并当侦听到信道为空时进行随机接入，可以使得进行随机接入的终端灵活采用基于网络设备指示得到的LBT类型进行信道侦听，从而减少PRACH发送信息的时延，提高随机接入效率。
本公开实施例中，上述的第一指示信息指示的终端的LBT类型可为LBT类型2，或者LBT类型4。其中，当网络设备允许终端共享自身的COT时，该第一指示信息指示LBT类型2；而当网络设备不允许终端共享自身的COT时，该第一指示信息指示LBT类型4。
可选的，在上述的第一指示信息指示网络设备的COT的剩余时间和网络设备的COT的结束时间中的至少一者时，终端可以根据随机接入时机(RACH Occasion，RO)在时域的位置或其随机接入资源与网络设备的COT的剩余时间之间的关系来确定是否共享网络设备的COT，并在确定共享网络设备的COT时，采用LBT类型2进行信道侦听，或者在确定不共享网络设备的COT 时，采用LBT类型4进行信道侦听。这样终端在共享网络设备的COT的情况下可以使用共享的COT快速发起随机接入过程，从而减少信息发送的时延，提高随机接入效率。
进一步的，上述步骤102可包括：
1)在以下任意一种情况下，采用LBT类型2进行信道侦听：
随机接入时机在时域的位置在网络设备的COT的剩余时间内；
具有至少一段完整的连续的随机接入资源在网络设备的COT的剩余时间内。
2)或者，在以下任意一种情况下，采用LBT类型4进行信道侦听：
随机接入时机在时域的位置在网络设备的COT的剩余时间外；
连续的随机接入资源中有至少一部分在网络设备的COT的剩余时间外。
可理解的，终端在获得到网络设备的COT的结束时间后，基于与网络设备的交互情况等可确定网络设备的COT的剩余时间。
例如，假设gNB在触发UE的RACH过程时，同时向该UE指示该gNB的COT的剩余时间或者COT的结束时间，该UE可根据自身RO在时域的位置与该gNB的COT的剩余时间或者COT的结束时间之间的关系来决定是否共享该gNB的COT。如果该UE的RO在时域的位置落在该gNB的COT的剩余时间内，则该UE采用LBT类型2(Cat2)进行信道侦听，并当侦听到信道为空时，进行随机接入。而如果该UE的RO在时域的位置落在该gNB的COT的剩余时间外，则该UE采用LBT类型4(Cat4)进行信道侦听，并当侦听到信道为空时，进行随机接入。此时LBT类型4的优先级由UE自己决定，可以根据配置的PRACH preamble format采用不同的优先级。比如，PRACH preamble format 1或PRACH preamble format 2采用优先级2，其他PRACH preamble format采用优先级1。
此外，该UE也可以根据是否有至少一段完整的连续的RACH资源落在该gNB的COT的剩余时间内决定是否共享该gNB的COT。如果该UE有至少一段完整的连续的RACH资源落在该gNB的COT的剩余时间内，则该UE采用LBT类型2进行信道侦听，共享该gNB的COT。可选的，该UE只有在收到触发指示之后的第一段连续的RACH资源内的RO上发送PRACH时， 才使用LBT类型2进行信道侦听。如果该UE的连续的RACH资源中有至少一部分落在该gNB的COT的剩余时间外，即至少一个RACH资源中的RO在时域的位置落在该gNB的COT的剩余时间外，则该UE采用LBT类型4进行信道侦听，并当侦听到信道为空时，进行随机接入。此时LBT类型4的优先级由UE自己决定。
请参见图2，图2是本公开实施例提供的一种信息发送方法的流程图，该方法应用于网络设备，如图2所示，该方法包括如下步骤：
步骤201：向终端发送第一指示信息。
其中，该第一指示信息用于所述终端获得随机接入前信道侦听时采用的LBT类型。这样，终端可采用对应的LBT类型进行信道侦听，并当侦听到信道为空时进行随机接入。
可选的，该第一指示信息可以指示以下至少一项：
终端的LBT类型；
网络设备的COT的剩余时间；
网络设备的COT的结束时间。
一种实施方式中，在由网络设备确定是否允许终端共享自身的COT的情况下，该第一指示信息指示终端的LBT类型，即向终端指示随机接入时的LBT类型，以使得终端可以共享网络设备的COT。
另一种实施方式中，在由终端确定是否共享网络设备的COT的情况下，该第一指示信息可指示网络设备的COT的剩余时间和网络设备的COT的结束时间中的至少一者，以由终端根据网络设备的COT相关信息确定是否共享该网络设备的COT。
另一种实施方式中，上述的第一指示信息可以是：网络设备在触发终端的随机接入(RACH)过程时同时发送给该终端的。
本公开实施例的随机接入方法，通过向终端发送第一指示信息，可以使得进行随机接入的终端采用对应的LBT类型进行信道侦听，并当侦听到信道为空时进行随机接入，这样可以使得进行随机接入的终端在共享网络设备的COT的情况下使用共享的COT快速发起随机接入过程，从而减少PRACH发送信息的时延，提高随机接入效率。
可选的，上述的第一指示信息指示的终端的LBT类型可为LBT类型2，或者LBT类型4。其中，当网络设备允许终端共享自身的COT时，该第一指示信息指示LBT类型2；而当网络设备不允许终端共享自身的COT时，该第一指示信息指示LBT类型4。
一种实施方式中，对于PDCCH order指示触发的RACH过程，gNB可以通过下行控制信息(Downlink Control Information，DCI)中的指示信息指示UE发起RACH过程的LBT类型。该指示信息可以是DCI中新增加的域，也可以是DCI中的现有域，此时该现有域具有重新解读。例如，可以利用DCI format 1_0中的上行(UL)或附加上行(SUL)指示位(UL/SUL indicator)，或者预留比特位(reserved bits)来指示LBT类型。UE在接收到触发RACH过程的DCI format 1_0时，默认UL/SUL indicator的1比特，或者reserved bits中的1比特指示LBT的类型是类型2还是类型4。
可选的，当上述的第一指示信息指示终端的LBT类型时，网络设备可根据配置给终端的连续的RACH资源是否全部落在自身COT的剩余时间内，确定是否允许终端共享自身的COT，并向终端指示随机接入的LBT类型。即，在网络设备的COT的剩余时间内包括至少一段完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型2；或者，在网络设备的COT的剩余时间内没有完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型4。
例如，假设gNB在触发UE的RACH过程时，同时向该UE指示随机接入的LBT类型。如果在该gNB的COT的剩余时间内包含至少一段完整的连续的RACH资源，即这一段连续的RACH资源中所有RO在时域的位置全部落在该gNB的COT的剩余时间内，则该gNB允许UE共享其COT，向该UE发送指示LBT类型2的指示信息。该UE在接收到该指示信息后，可根据该指示信息，采用LBT类型2进行信道侦听，并当侦听到信道为空时进行随机接入。可选的，该UE只有在收到触发指示之后的第一段连续的RACH资源内的RO上发送PRACH时，才使用LBT类型2进行信道侦听。
此外，如果在该gNB的COT的剩余时间内没有完整的连续的随机接入资源，即没有任何一段完整的连续的RACH资源中的所有RO资源的时域位 置落在该gNB的COT的剩余时间内，则该gNB不允许UE共享其COT，向该UE发送指示LBT类型4的指示信息。该UE在接收到该指示信息后，可根据该指示信息，采用LBT类型4进行信道侦听，并当侦听到信道为空时进行随机接入。其中，此LBT类型4的优先级由UE决定，可根据配置的PRACH preamble format采用不同的优先级。比如，PRACH preamble format 1或PRACH preamble format 2采用优先级2，其他PRACH preamble format采用优先级1。
上述实施例对本公开的随机接入和信息发送方法进行了说明，下面将结合实施例和附图对本公开的终端和网络设备进行说明。
请参见图3，图3是本公开实施例提供的一种终端的结构示意图，如图3所示，该终端30包括：
接收模块31，用于从网络设备接收第一指示信息；
侦听模块32，用于根据所述第一指示信息，采用对应的LBT类型进行信道侦听；
随机接入模块33，用于当侦听到信道为空时进行随机接入。
可选的，所述第一指示信息指示以下至少一项：
所述终端的LBT类型；
所述网络设备的COT的剩余时间；
所述网络设备的COT的结束时间。
可选的，所述LBT类型为LBT类型2，或者LBT类型4。
可选的，当所述第一指示信息指示所述网络设备的COT的剩余时间和所述网络设备的COT的结束时间中的至少一者时，所述侦听模块32具体用于：
在以下任意一种情况下，采用LBT类型2进行信道侦听：
随机接入时机在时域的位置在所述网络设备的COT的剩余时间内；
具有至少一段完整的连续的随机接入资源在所述网络设备的COT的剩余时间内；
或者，
在以下任意一种情况下，采用LBT类型4进行信道侦听：
随机接入时机在时域的位置在所述网络设备的COT的剩余时间外；
连续的随机接入资源中有至少一部分在所述网络设备的COT的剩余时间外。
本公开实施例的终端30，可以实现上述图1所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
请参见图4，图4是本公开实施例提供的一种网络设备的结构示意图，如图4所示，该网络设备40包括：
发送模块41，用于向终端发送第一指示信息；
其中，所述第一指示信息用于所述终端获得随机接入前信道侦听时采用的LBT类型。
可选的，所述第一指示信息指示以下至少一项：
所述终端的LBT类型；
所述网络设备的COT的剩余时间；
所述网络设备的COT的结束时间。
可选的，当所述第一指示信息指示所述终端的LBT类型时，
在所述网络设备的COT的剩余时间内包括至少一段完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型2；
或者，在所述网络设备的COT的剩余时间内没有完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型4。
本公开实施例的网络设备40，可以实现上述图2所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
本公开实施例还提供一种通信设备，包括处理器，存储器，存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述计算机程序被所述处理器执行时实现上述图1或图2所示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。可选的，该通信设备可为终端或网络设备。
请参见图5，图5为实现本公开各个实施例的一种终端的硬件结构示意图，终端500包括但不限于：射频单元501、网络模块502、音频输出单元503、输入单元504、传感器505、显示单元506、用户输入单元507、接口单元508、存储器509、处理器510、以及电源511等部件。本领域技术人员可 以理解，图5中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本公开实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
其中，射频单元501，用于从网络设备接收第一指示信息；
处理器510，用于根据所述第一指示信息，采用对应的LBT类型进行信道侦听；并当侦听到信道为空时进行随机接入。
本公开实施例的终端500，可以实现上述图1所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
应理解的是，本公开实施例中，射频单元501可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器510处理；另外，将上行的数据发送给基站。通常，射频单元501包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元501还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块502为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元503可以将射频单元501或网络模块502接收的或者在存储器509中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元503还可以提供与终端500执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元503包括扬声器、蜂鸣器以及受话器等。
输入单元504用于接收音频或视频信号。输入单元504可以包括图形处理器(Graphics Processing Unit，GPU)5041和麦克风5042，图形处理器5041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元506上。经图形处理器5041处理后的图像帧可以存储在存储器509(或其它存储介质)中或者经由射频单元501或网络模块502进行发送。麦克风5042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元501发送到移动通信基站的 格式输出。
终端500还包括至少一种传感器505，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板5061的亮度，接近传感器可在终端500移动到耳边时，关闭显示面板5061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器505还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元506用于显示由用户输入的信息或提供给用户的信息。显示单元506可包括显示面板5061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板5061。
用户输入单元507可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元507包括触控面板5071以及其他输入设备5072。触控面板5071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板5071上或在触控面板5071附近的操作)。触控面板5071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器510，接收处理器510发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板5071。除了触控面板5071，用户输入单元507还可以包括其他输入设备5072。具体地，其他输入设备5072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板5071可覆盖在显示面板5061上，当触控面板5071检测到在其上或附近的触摸操作后，传送给处理器510以确定触摸事件的类 型，随后处理器510根据触摸事件的类型在显示面板5061上提供相应的视觉输出。虽然在图5中，触控面板5071与显示面板5061是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板5071与显示面板5061集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元508为外部装置与终端500连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元508可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到终端500内的一个或多个元件或者可以用于在终端500和外部装置之间传输数据。
存储器509可用于存储软件程序以及各种数据。存储器509可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器509可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器510是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器509内的软件程序和/或模块，以及调用存储在存储器509内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器510可包括一个或多个处理单元；可选的，处理器510可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器510中。
终端500还可以包括给各个部件供电的电源511(比如电池)，可选的，电源511可以通过电源管理系统与处理器510逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端500还可包括一些未示出的功能模块，在此不再赘述。
请参见图6，图6为实现本公开各个实施例的一种网络设备的硬件结构 示意图，所述网络设备60包括但不限于：总线61、收发机62、天线63、总线接口64、处理器65和存储器66。
在本公开实施例中，所述网络设备60还包括：存储在存储器66上并可在处理器65上运行的计算机程序。可选的，该计算机程序被处理器65执行时实现以下步骤：
向终端发送第一指示信息；
其中，所述第一指示信息用于所述终端获得随机接入前信道侦听时采用的LBT类型。
收发机62，用于在处理器65的控制下接收和发送数据。
本公开实施例的网络设备60，可以实现上述图2所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
在图6中，总线架构(用总线61来代表)，总线61可以包括任意数量的互联的总线和桥，总线61将包括由处理器65代表的一个或多个处理器和存储器66代表的存储器的各种电路链接在一起。总线61还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口64在总线61和收发机62之间提供接口。收发机62可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器65处理的数据通过天线63在无线介质上进行传输，进一步，天线63还接收数据并将数据传送给处理器65。
处理器65负责管理总线61和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器66可以被用于存储处理器65在执行操作时所使用的数据。
可选的，处理器65可以是CPU、ASIC、FPGA或CPLD。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述图1或图2所示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，该计算机可读存储介质，例如为只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (13)

  1. 一种随机接入方法，应用于终端，包括：
    从网络设备接收第一指示信息；
    根据所述第一指示信息，采用对应的先听后说LBT类型进行信道侦听；
    当侦听到信道为空时进行随机接入。
  2. 根据权利要求1所述的方法，其中，所述第一指示信息指示以下至少一项：
    所述终端的LBT类型；
    所述网络设备的COT的剩余时间；
    所述网络设备的COT的结束时间。
  3. 根据权利要求2所述的方法，其中，所述LBT类型为LBT类型2，或者LBT类型4。
  4. 根据权利要求2所述的方法，其中，当所述第一指示信息指示所述网络设备的COT的剩余时间和所述网络设备的COT的结束时间中的至少一者时，所述根据所述第一指示信息，采用对应的先听后说LBT类型进行信道侦听，包括：
    在以下任意一种情况下，采用LBT类型2进行信道侦听：
    随机接入时机在时域的位置在所述网络设备的COT的剩余时间内；
    具有至少一段完整的连续的随机接入资源在所述网络设备的COT的剩余时间内。
  5. 根据权利要求2所述的方法，其中，当所述第一指示信息指示所述网络设备的COT的剩余时间和所述网络设备的COT的结束时间中的至少一者时，所述根据所述第一指示信息，采用对应的先听后说LBT类型进行信道侦听，包括：
    在以下任意一种情况下，采用LBT类型4进行信道侦听：
    随机接入时机在时域的位置在所述网络设备的COT的剩余时间外；
    连续的随机接入资源中有至少一部分在所述网络设备的COT的剩余时间外。
  6. 一种信息发送方法，应用于网络设备，包括：
    向终端发送第一指示信息；
    其中，所述第一指示信息用于所述终端获得随机接入前信道侦听时采用的LBT类型。
  7. 根据权利要求6所述的方法，其中，所述第一指示信息指示以下至少一项：
    所述终端的LBT类型；
    所述网络设备的COT的剩余时间；
    所述网络设备的COT的结束时间。
  8. 根据权利要求7所述的方法，其中，当所述第一指示信息指示所述终端的LBT类型时，
    在所述网络设备的COT的剩余时间内包括至少一段完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型2。
  9. 根据权利要求7所述的方法，其中，当所述第一指示信息指示所述终端的LBT类型时，
    在所述网络设备的COT的剩余时间内没有完整的连续的随机接入资源的情况下，所述第一指示信息指示LBT类型4。
  10. 一种终端，包括：
    接收模块，用于从网络设备接收第一指示信息；
    侦听模块，用于根据所述第一指示信息，采用对应的LBT类型进行信道侦听；
    随机接入模块，用于当侦听到信道为空时进行随机接入。
  11. 一种网络设备，包括：
    发送模块，用于向终端发送第一指示信息；
    其中，所述第一指示信息用于使得所述终端采用对应的LBT类型进行信道侦听，并当侦听到信道为空时进行随机接入。
  12. 一种通信设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述计算机程序被所述处理器执行时实现如权利要求1至5中任一项所述的随机接入方法的步骤，或者如权利 要求6至9中任一项所述的信息发送方法的步骤。
  13. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现如权利要求1至5中任一项所述的随机接入方法的步骤，或者如权利要求6至9中任一项所述的信息发送方法的步骤。
PCT/CN2020/119898 2019-10-12 2020-10-09 随机接入、信息发送方法、终端及网络设备 WO2021068874A1 (zh)

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