WO2020248133A1

WO2020248133A1 - Channel access configuration method and apparatus, and device and storage medium

Info

Publication number: WO2020248133A1
Application number: PCT/CN2019/090755
Authority: WO
Inventors: 刘洋
Original assignee: 小米通讯技术有限公司
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-12-17
Also published as: CN110463280A; CN110463280B

Abstract

Embodiments of the present invention relate to the field of communications, and provide a channel access configuration method and apparatus, and a device and a storage medium. The method comprises: a base station determines a target attribute parameter in at least two attribute parameters of an LBT Cat2; the base station sends a configuration message, the configuration message being used for configuring the target attribute parameter of the LBT Cat2; a terminal receives the configuration message, the configuration message being used for configuring the target attribute parameter of the LBT Cat2; and the terminal uses the LBT Cat2 to detect a channel state on an unlicensed frequency band according to the target attribute parameter.

Description

Channel access configuration method, device, equipment and storage medium

Technical field

The present disclosure relates to the field of communications, and in particular to a channel access configuration method, device, equipment and storage medium.

Background technique

The Third Generation Partnership Project (3GPP) has carried out research on 5G unlicensed spectrum (New Radio Unlicensed, NR-U), and it needs to support the independent networking of unlicensed cells. Considering the continuity of NR-U design and 5G design, the design of 5G New Radio (NR) should be inherited to NR-U as much as possible.

The design of unlicensed spectrum should comply with relevant laws and regulations in major regions around the world. The most important ones are: Listen Before Talk (LBT), Occupied Channel Bandwidth (OCB), and Channel Occupancy Time (Channel Occupancy Time, COT), etc.

Among them, LBT is the most important mechanism for sharing the use of unlicensed spectrum with Wireless Fidelity (Wi-Fi) networks. Before the channel is sent, the terminal must listen to the channel's idle status. If the channel status is busy, it cannot send the predetermined Time information. For LBT, there are different access priorities (such as Cat1, Cat2, Cat3, Cat4, etc.). When discussing LBT Cat 2, there are multiple candidate solutions.

Summary of the invention

The embodiments of the present application provide a channel access configuration method, device, device, and storage medium, which can be used to solve the problem of how to select a reasonable LBT Cat2 solution when there are multiple LBT Cat2 candidate solutions. The technical solution is as follows:

According to an aspect of the present disclosure, there is provided a channel access configuration method, the method including:

Receiving a configuration message, where the configuration message is used to configure target attribute parameters of LBT Cat2;

Using the LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter;

Wherein, the target attribute parameter is one of at least two attribute parameters of the LBT Cat2.

In an optional embodiment, the use of the LBT Cat2 to detect the channel state in an unlicensed frequency band according to the target attribute parameter includes:

When the target attribute parameter is the first attribute parameter, a listening time period is determined within the duration of the channel clear channel assessment (CCA), and the unlicensed frequency band is channeled during the listening time period State detection.

In an optional embodiment, the determining the listening time period within the CCA duration includes:

Determine a listening time period within the CCA duration time; or, according to the first attribute parameter, determine a listening time period within the CCA duration time.

When the target attribute parameter is the second attribute parameter, the listening time period is determined in the first time period and the second time period within the CCA duration, and the two listening time periods are compared. The unlicensed frequency band performs channel state detection.

In an optional embodiment, determining the listening time period in the first time period and the second time period within the CCA duration includes:

Determine the listening time period by themselves in the first time period and the second time period within the CCA duration;

or,

According to the second attribute parameter, the listening time period is respectively determined in the first time period and the second time period within the CCA duration.

In an optional embodiment, the CCA duration is 16 us, and the listening time period is 4 us.

In an optional embodiment, the configuration message further includes the access condition of the LBT Cat2, and the method further includes:

When the access condition is met, the step of using the LBT Cat2 to perform channel state detection on an unlicensed frequency band according to the target attribute parameter is performed.

In an optional embodiment, the configuration message is a radio resource control RRC message.

According to another aspect of the present disclosure, there is provided a channel access configuration method, the method including:

Determine the target attribute parameter among at least two attribute parameters of LBT Cat2;

Send a configuration message, where the configuration message is used to configure the target attribute parameter of the LBT Cat2.

In an optional embodiment, the at least two attribute parameters include:

The first attribute parameter is used to indicate that a listening time period is determined within the CCA duration, and the channel state of the unlicensed frequency band is detected during the listening time period;

The second attribute parameter is used to indicate that a listening time period is determined in the first time period and the second time period within the CCA duration, and the unlicensed frequency band is determined in the two listening time periods. Perform channel state detection.

In an optional embodiment, the first attribute parameter is also used to indicate the configuration of the listening period within the CCA duration;

The second attribute parameter is also used to indicate the configuration of the two listening time periods in the first time period and the second time period.

In an optional embodiment, the configuration message further includes the access condition of the LBT Cat2.

In an optional embodiment, the configuration message is a radio resource control (Radio Resource Control, RRC) message.

According to an aspect of the present disclosure, there is provided a channel access configuration device, the device including:

The receiving module is configured to receive a configuration message, which is used to configure the target attribute parameter of LBT Cat2;

The detection module is configured to use the LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter;

In an optional embodiment, the detection module is configured to, when the target attribute parameter is the first attribute parameter, determine a listening time period within the CCA duration, and in the listening time period Perform channel state detection on the unlicensed frequency band.

In an optional embodiment, the detection module is configured to determine a listening time period within the CCA duration; or, according to the first attribute parameter, determine within the CCA duration Out of listening time period.

In an optional embodiment, the detection module is configured to determine when the target attribute parameter is a second attribute parameter, respectively, in the first time period and the second time period within the CCA duration Out of the listening time period, the channel status of the unlicensed frequency band is detected in the two listening time periods.

In an optional embodiment, the detection module is configured to independently determine the listening time period within the first time period and the second time period within the CCA duration; Or, according to the second attribute parameter, the listening time period is respectively determined in the first time period and the second time period within the CCA duration.

In an optional embodiment, the configuration message further includes the access condition of the LBT Cat2, and the detection module is configured to execute the parameter according to the target attribute when the access condition is satisfied. The step of using the LBT Cat2 to detect the channel state on the unlicensed frequency band.

The determining module is configured to determine the target attribute parameter among at least two attribute parameters of LBT Cat2;

The sending module is configured to send a configuration message, where the configuration message is used to configure the target attribute parameter of the LBT Cat2.

In an optional embodiment, the at least two attribute parameters include:

In an optional embodiment, the first attribute parameter is also used to indicate the configuration of the listening time period within the CCA duration; the second attribute parameter is also used to indicate two The configuration of the listening time period in the first time period and the second time period.

According to an aspect of the present disclosure, a terminal is provided, and the terminal includes:

processor;

A transceiver connected to the processor;

Wherein, the processor is configured to load and execute executable instructions to implement the channel access configuration method executed by the terminal as described above.

According to an aspect of the present disclosure, an access network device is provided, and the access network device includes:

processor;

A transceiver connected to the processor;

Wherein, the processor is configured to load and execute executable instructions to implement the channel access configuration method executed by the access network device as described above.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, and the computer-readable storage medium stores at least one instruction, at least one program, code set or instruction set, the at least one instruction, the At least one program, the code set or the instruction set is loaded and executed by the processor to implement the channel access configuration method executed by the terminal or the access network device as described above.

The beneficial effects brought by the technical solutions provided by the embodiments of the present application include at least:

The terminal receives the configuration message sent by the base station, and uses the LBT Cat2 to detect the channel status on the unlicensed frequency band according to the target attribute parameters configured in the configuration message, which can adopt a more appropriate target according to the configuration of the operator and/or the current area Attribute parameters perform LBT Cat2 detection of channel status, improve the fairness of sharing unlicensed spectrum with other communication systems (such as Wi-Fi), and also improve the compatibility of terminals with different uplink and downlink switching delay performance.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Fig. 1 is a block diagram of a communication system provided by an exemplary embodiment of the present application;

Figure 2 is a flowchart of a channel access configuration method provided by another exemplary embodiment of the present application;

Fig. 3 is a block diagram of a channel access configuration device provided by another exemplary embodiment of the present application;

FIG. 4 is a block diagram of a channel access configuration device provided by another exemplary embodiment of the present application;

Fig. 5 is a block diagram of a terminal provided by an exemplary embodiment of the present application;

Fig. 6 is a block diagram of an access network device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

Before introducing and explaining the embodiments of the present disclosure, firstly, the channel detection mechanism involved in the present disclosure will be explained.

Channel detection mechanisms usually include the following five types:

The first type (LBT Cat.1): Does not contain LBT, that is, the terminal does not need to perform channel detection before transmitting information, and directly sends information. LBT can also be called a monitoring avoidance mechanism, which is used to realize the effective sharing of unlicensed spectrum. LBT requires that the channel be monitored before information is transmitted, and CCA (Clear Channel Assessment, channel vacancy assessment) is performed, and transmission is performed when the channel is guaranteed to be free.

The second type (LBT Cat.2): LBT mechanism without random backoff process. The terminal only needs to detect a time granularity before transmitting information. For example, the time granularity can be 25us. If the channel is idle within this time granularity, the terminal can transmit information; otherwise, the LBT execution fails and the terminal cannot transmit information.

The third type (LBT Cat.3): a random backoff LBT mechanism with a fixed contention window size (CWS). The sending terminal first detects whether the channel corresponding to the beam is idle at the first time granularity, and if the beam is detected If the corresponding channel is idle, the random number value N is selected in the first competition window, and the channel detection is performed with the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be idle at the second time granularity, and the random number is If the value is not 0, then the value of the random number is reduced by 1, and the channel detection is continued with the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be busy at the second time granularity, the first time granularity is used again Channel detection is performed for the time granularity; if the channel corresponding to the beam is detected to be idle at the first time granularity again, and the value of the random number is not 0, the value of the random number is subtracted by 1, and the second time granularity is restored as the time Channel detection is performed at granularity; until the value of the random number is reduced to 0, the channel is idle.

The fourth type (LBT Cat.4): CWS variable random back-off LBT mechanism. That is, on the basis of LBT Cat.3, the sending terminal can adjust the CWS according to the result of the previous transmission. For example, in the data transmitted within a reference time during the previous transmission, the proportion of data that was not received correctly is X. When X is greater than a threshold, the CWS value increases. In order to refine the parameter settings in the LBT process, four priority levels are set in LBT Cat.4, each priority level corresponds to a different parameter configuration, and data transmission of different service types corresponds to different priority levels.

The principle of LBT Cat.4 is as follows: the terminal first detects whether the channel corresponding to the beam is idle at the first time granularity. If it detects that the channel corresponding to the beam is idle, select the random number value N in the first contention window and use the first The second time granularity is the time granularity for channel detection; if the channel corresponding to the beam is detected to be idle at the second time granularity and the value of the random number is not 0, then the value of the random number is reduced by 1, and the second time granularity is continued Channel detection is performed at the time granularity; if the channel corresponding to the beam is detected to be busy at the second time granularity, the channel detection is performed again with the first time granularity as the time granularity; if the channel corresponding to the beam is detected again at the first time granularity If it is idle and the value of the random number is not 0, then the value of the random number is reduced by 1, and the second time granularity is used as the time granularity for channel detection; until the value of the random number is reduced to 0, the channel is idle.

For example, if the first time granularity is 16us+M*9us, and the second time granularity is 9us, first check whether the channel within 16us+M*9us is free, if the channel is free, select the random number value N in the competition window , And then use 9us as the granularity for detection, if the channel is idle, then N-1, and continue to use 9us as the granularity for detection; otherwise, use 16us+M*9us as the granularity for channel detection, when the detection channel is idle, then N-1, And resume the detection with 9us as the granularity until the random number is 0, which means the channel is idle and can be used.

Among them, the value of M is determined by m _p in Table-1 and Table-2. The channel access priority value p is different, and the value of M is different. Table-1 shows the configuration of four priority parameters for the downstream LBT Cat.4, and Table-2 shows the configuration of the four priority parameters for the upstream LBT Cat.4. The two only have slightly different values.

Table 1

Table 2

Among the four channel access priorities shown in Table-1 and Table-2, the smaller the p value, the higher the corresponding priority. m _p is the number of extended clear channel assessments (Extended Clear Channel, ECCA) included in a delay time. Each delay time is composed of a fixed 16us duration and m _p ECCAs, which is the first time introduced above granularity. CW _min,p and CW _max,p are the minimum competition window value and the maximum competition window value. CWS in the LBT process is generated between these two values, and then from 0 to the generated competition window CW _p The randomly generated back-off counter N determines the length of the back-off time in the LBT channel detection process, and T _mcot,p is the maximum length of time that the channel can be occupied after the LBT Cat.4 corresponding to each priority is successfully executed. The comparison can be seen from the above table. In terms of priority 1, 2, the execution time of the LBT process of priority 3, 4 is longer, and the chance of obtaining channel access is relatively low. In order to ensure fairness, data transmission using these two priorities can occupy The maximum transmission time is also relatively long.

The fifth type: channel detection mechanism based on frame structure, namely FBE (Frame Based Equipment). For FBE, set a cycle, and perform channel detection at a fixed position in each cycle, such as CCA detection during each CCA detection time. If it is detected that the channel status is idle, the channel can be occupied for transmission, and the maximum channel occupation time is fixed. When the CCA detection time of the next cycle is reached, CCA detection will be performed again; if the channel status is detected as non-idle, then in this cycle The internal terminal cannot occupy the channel until it waits for a fixed position in the next cycle to continue detection. The fixed period refers to a time domain unit scheduled by FBE, for example, the fixed period may be a fixed frame period (Fixed Frame Period, FFP). The length of the fixed period can be predetermined by the agreement.

It should be noted that the above five channel detection mechanisms are only exemplary introductions. With the evolution of communication technology, the above five channel detection mechanisms may be changed, or new channel detection mechanisms may emerge, but they are all applicable to this Publicly described technical solutions.

When discussing the implementation mechanism of LBT Cat.2, there are many different implementation methods. Taking the CCA duration of 16us (microseconds) and the listening time period of 4us as an example, there are at least the following attributes of LBT Cat.2:

1. Perform a channel listening process within the CCA duration of 16us. The 4us corresponding to the channel listening process is any 4us within 16us seconds, and the position of the arbitrary 4us within 16us is determined by the UE itself.

2. Perform a channel listening process within the CCA duration of 16us. The 4us corresponding to the channel listening process is a fixed 4us within 16us seconds, and the position of the fixed 4us within 16us will be pre-appointed.

3. Perform two channel listening processes within the CCA duration of 16us. Exemplarily, divide 16us into a first time period (7us) and a second time period (9us); in the first time period (7us), perform the first 4us channel listening process, and in the second time period ( The second 4us channel listening process is performed in 9us).

Because there are slight differences in other communication systems used in different countries and/or regions, for example, different countries have different management mechanisms for LBT. Japan and Europe are mandatory for LBT in unlicensed frequency bands, while other regions have Relatively loose management. Therefore, the LBT Cat2 adopted by different countries and/or regions may be slightly different, and each type of LBT Cat2 corresponds to its own set of attribute parameters.

On the other hand, the uplink and downlink switching delays of different terminals may also be different. Some terminals have shorter uplink and downlink switching delays and higher performance; some terminals have longer uplink and downlink switching delays and poor performance. There are also slight differences in the LBT Cat2 that different terminals can use.

FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure. The communication system may include: a core network 11, an access network 12, and a terminal 13.

The core network 11 includes several core network devices 110. The core network equipment 110 includes access and mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), and user plane management functions (User Plane Function, UPF) and other equipment. Among them, AMF uses To control terminal access rights and switching functions, SMF is used to provide server continuity and uninterrupted user experience of the server, such as: IP address and anchor point changes.

The access network 12 includes several access network devices 120. The access network device 120 may be a base station, which is a device deployed in an access network to provide a wireless communication function for a terminal. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, and so on. In systems using different radio access technologies, the names of devices with base station functions may be different. For example, in the Long Term Evolution (LTE) system, they are called eNodeB or eNB; in the 5G new air interface ( In the New Radio (NR) system, it is called gNode B or g NB. With the evolution of communication technology, the name "base station" may be described and will change. For convenience, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for terminals are collectively referred to as access network devices.

The terminal 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of terminal (User Equipment, UE), and mobile stations (Mobile Station). Station, MS), terminal (terminal device), etc. For ease of description, the devices mentioned above are collectively referred to as terminals. The access network device 120 and the terminal 13 communicate with each other through a certain air interface technology, such as a Uu interface.

Optionally, in the process of wireless communication between the terminal 13 and the access network device 120 described above, wireless communication may be performed through a licensed frequency band, or wireless communication may be performed through an unlicensed frequency band. Optionally, in this embodiment of the present application, the description is given as an example of wireless communication between the terminal 13 and the access network device 120 through an unlicensed frequency band.

Optionally, the above-mentioned access network equipment is a base station in an NR-U independent networking architecture. Optionally, the aforementioned communication system also fairly shares unlicensed spectrum with other communication systems such as Wi-Fi.

Fig. 2 shows a flowchart of a channel access configuration method provided by an exemplary embodiment of the present disclosure. This application applies this method to the communication system shown in FIG. 1. The method includes:

Step 201: The base station determines the target attribute parameter among at least two attribute parameters of LBT Cat2;

Illustratively, the at least two attribute parameters of LBT Cat2 include:

The second attribute parameter is used to indicate that the listening time period is determined in the first time period and the second time period within the CCA duration, and the channel state of the unlicensed frequency band is determined in the two listening time periods Detection.

Optionally, the base station determines a set of attribute parameters matching the current area from at least two attribute parameters according to the configuration of the operator and the current area of the terminal, as the target attribute parameter. For example, the first attribute parameter is used as the target attribute parameter in area A; the second attribute parameter is used as the target attribute parameter in area B.

Step 202: The base station sends a configuration message, which is used to configure target attribute parameters of LBT Cat2;

The base station sends a configuration message to the terminal. The base station uses a broadcast message to configure the message to the terminal; or, the base station uses a radio resource control (Radio Resource Control, RRC) message to send the configuration message.

Step 203, the terminal receives the configuration message;

The terminal receives the configuration message sent by the base station. The terminal receives the broadcast message sent by the base station and obtains the configuration message from the broadcast message; or the terminal receives the RRC message sent by the base station and obtains the configuration message from the RRC message.

Step 204: The terminal adopts LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter.

In summary, in the method provided in this embodiment, the terminal receives the configuration message sent by the base station, and uses LBT Cat2 on the unlicensed frequency band to detect the channel status according to the target attribute parameters configured in the configuration message. The configuration and/or current location adopts more appropriate attribute parameters for LBT Cat2 to detect channel status, which improves the fairness of sharing unlicensed spectrum with other communication systems, and can also adapt to terminals with different uplink and downlink switching delay performance.

In an alternative embodiment based on FIG. 2, the target attribute parameter is the first attribute parameter, and the foregoing step 204 can be implemented instead as the following steps:

When the target attribute parameter is the first attribute parameter, the terminal determines the listening time period within the CCA duration, and detects the channel state of the unlicensed frequency band during the listening time period.

Taking the CCA duration of 16us and the listening time period of 4us as an example, the terminal determines the 4us listening time period within the CCA duration of 16us, and detects the channel status of the unlicensed frequency band during the 4us listening time period. .

Among them, the position of the listening time period within the CCA duration is determined by the terminal itself or configured by the base station. That is, the terminal determines the listening time period within the CCA duration by itself, or the terminal determines the listening time period within the CCA duration according to the first attribute parameter.

For example, if the first attribute parameter indicates that the listening time period is at the earliest 4us or the last 4us of the CCA duration, the terminal determines the earliest 4us in 16us as the listening time period, or the last 4us in 16us as the detection time period. Listen to the time period.

In an alternative embodiment based on FIG. 2, the target attribute parameter is the second attribute parameter, and the above step 204 can be implemented instead as the following steps:

When the target attribute parameter is the second attribute parameter, the terminal separately determines the listening time period during the first time period and the second time period within the CCA duration, and the unlicensed frequency band is monitored during the two listening time periods. Perform channel state detection.

Taking the CCA duration of 16us and the listening time period of 4us as an example, the terminal converts the 16us CCA duration into the first time period (7us) and the second time period (9us), in the first time period (7us) The first 4us listening time period is determined within, the second 4us listening time period is determined within the second time period (9us), and the unlicensed frequency band is channeled during the two 4us listening time periods State detection.

Among them, the position of the listening time period within the CCA duration is determined by the terminal itself or configured by the base station. That is, the terminal determines the listening time period by itself during the first time period and the second time period of the CCA duration, or, according to the second attribute parameter, the terminal respectively determines the listening time period during the first time period and the second time period of the CCA duration Determine the listening time period.

In the optional embodiment based on FIG. 2, the attribute parameters of the above-mentioned LBT Cat2 may also include other types of attribute parameters, which are not limited in the embodiment of the present disclosure.

In an optional embodiment based on FIG. 2, the above configuration message also carries LBT Cat2 access conditions. When the terminal meets the access conditions of LBT Cat2, it executes the step of using LBT Cat2 to perform channel state detection on the unlicensed frequency band according to the target attribute parameters.

Fig. 3 shows a block diagram of a channel access configuration device provided by another exemplary embodiment of the present application. The device can be implemented as part or all of a terminal through software, hardware or a combination of the two. The device includes:

The receiving module 302 is configured to receive a configuration message, which is used to configure target attribute parameters of LBT Cat2;

The detection module 304 is configured to use the LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter;

In an optional embodiment, the detection module 304 is configured to determine a listening time period within the CCA duration when the target attribute parameter is the first attribute parameter, and in the listening time period In the above, the channel status of the unlicensed frequency band is detected.

In an optional embodiment, the detection module 304 is configured to determine a listening time period within the CCA duration; or, according to the first attribute parameter, within the CCA duration Determine the listening time period.

In an optional embodiment, the detection module 304 is configured to, when the target attribute parameter is a second attribute parameter, respectively, within the first time period and the second time period within the CCA duration Determine the listening time period, and perform channel state detection on the unlicensed frequency band in the two listening time periods.

In an optional embodiment, the detection module 304 is configured to independently determine the listening time period within the first time period and the second time period within the CCA duration Or, according to the second attribute parameter, the listening time period is respectively determined in the first time period and the second time period within the CCA duration.

In an optional embodiment, the configuration message further includes the access condition of the LBT Cat2, and the detection module 304 is configured to perform the according to the target attribute when the access condition is satisfied. The parameter uses the LBT Cat2 to detect the channel status on the unlicensed frequency band.

Fig. 4 shows a block diagram of a channel access configuration device provided by another exemplary embodiment of the present application. The device can be implemented as part or all of the access network equipment through software, hardware or a combination of the two. The device includes:

The determining module 402 is configured to determine the target attribute parameter among at least two attribute parameters of LBT Cat2;

The sending module 404 is configured to send a configuration message, where the configuration message is used to configure the target attribute parameter of the LBT Cat2.

In an optional embodiment, the at least two attribute parameters include:

FIG. 5 shows a schematic structural diagram of a terminal provided by an exemplary embodiment of the present disclosure. The terminal includes: a processor 501, a receiver 502, a transmitter 503, a memory 504, and a bus 505.

The processor 501 includes one or more processing cores, and the processor 501 executes various functional applications and information processing by running software programs and modules.

The receiver 502 and the transmitter 503 may be implemented as a communication component, and the communication component may be a communication chip.

The memory 504 is connected to the processor 501 through a bus 505.

The memory 504 may be used to store at least one instruction, and the processor 501 is used to execute the at least one instruction, so as to implement each step in the foregoing method embodiment.

In addition, the memory 504 may be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes, but is not limited to: magnetic disks or optical disks, electrically erasable and programmable Read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static anytime access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM) .

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, which can be executed by the processor of the terminal to complete the control signaling detection method described above. Side execution method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

A non-transitory computer-readable storage medium. When the instructions in the non-transitory computer storage medium are executed by the processor of the terminal, the terminal can execute the above channel access configuration method.

Fig. 6 is a block diagram showing an access network device 150 according to an exemplary embodiment. The access network device 150 may be a base station.

The access network device 150 may include: a processor 151, a receiver 152, a transmitter 153, and a memory 154. The receiver 152, the transmitter 153, and the memory 154 are respectively connected to the processor 151 through a bus.

The processor 151 includes one or more processing cores, and the processor 151 executes the method executed by the access network device in the channel access configuration method provided by the embodiment of the present disclosure by running software programs and modules. The memory 154 can be used to store software programs and modules. Specifically, the memory 154 may store an operating system 641 and an application program module 642 required by at least one function. The receiver 152 is used to receive communication data sent by other devices, and the transmitter 153 is used to send communication data to other devices.

An exemplary embodiment of the present disclosure further provides a channel access configuration system (or communication system), the system includes: a terminal and an access network device;

The terminal includes a channel access configuration device provided in the embodiment shown in FIG. 8;

The access network equipment includes the channel access configuration device provided in the embodiment shown in FIG. 9.

An exemplary embodiment of the present disclosure also provides a channel access configuration system (or communication system), where the channel access configuration system includes: a terminal and an access network device;

The terminal includes the terminal provided in the embodiment shown in FIG. 5;

The access network equipment includes the access network equipment provided in the embodiment shown in FIG. 6.

An exemplary embodiment of the present disclosure also provides a computer-readable storage medium in which at least one instruction, at least one program, code set or instruction set is stored, the at least one instruction, the At least one piece of program, the code set or the instruction set is loaded and executed by the processor to implement the steps performed by the terminal or the access network device in the channel access configuration method provided by the foregoing method embodiments.

Those of ordinary skill in the art can understand that all or part of the steps in the foregoing embodiments can be implemented by hardware, or by a program instructing relevant hardware to be completed. The program can be stored in a computer-readable storage medium. The storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A channel access configuration method, characterized in that the method includes:

Receiving a configuration message, which is used to configure the target attribute parameter of the second priority listen-before-speak mechanism LBT Cat2;

Using the LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter;

Wherein, the target attribute parameter is one of at least two attribute parameters of the LBT Cat2.
The method according to claim 1, wherein the using the LBT Cat2 on an unlicensed frequency band to detect the channel state according to the target attribute parameter comprises:

When the target attribute parameter is the first attribute parameter, a listening time period is determined within the CCA duration of the channel idle assessment, and the channel state of the unlicensed frequency band is detected during the listening time period.
The method according to claim 2, wherein the determining the listening time period within the CCA duration includes:

Determine the listening time period by itself within the CCA duration;

or,

According to the first attribute parameter, a listening time period is determined within the CCA duration.
The method according to claim 1, wherein the using the LBT Cat2 on an unlicensed frequency band to detect the channel state according to the target attribute parameter comprises:

When the target attribute parameter is the second attribute parameter, the listening time period is determined in the first time period and the second time period within the CCA duration, and the two listening time periods are compared. The unlicensed frequency band performs channel state detection.
The method according to claim 4, wherein the determining the listening time period in the first time period and the second time period in the CCA duration, respectively, comprises:

Determine the listening time period by themselves in the first time period and the second time period within the CCA duration;

or,

According to the second attribute parameter, the listening time period is respectively determined in the first time period and the second time period within the CCA duration.
The method according to any one of claims 2 to 5, wherein the CCA duration is 16 us, and the listening time period is 4 us.
The method according to any one of claims 1 to 5, wherein the configuration message further includes the access condition of the LBT Cat2, and the method further includes:

When the access condition is met, the step of using the LBT Cat2 to perform channel state detection on an unlicensed frequency band according to the target attribute parameter is performed.
The method according to any one of claims 1 to 5, wherein the configuration message is a radio resource control RRC message.
A channel access configuration method, characterized in that the method includes:

Determine the target attribute parameter among at least two attribute parameters of the second priority listen-before-speak mechanism LBT Cat2;

Send a configuration message, where the configuration message is used to configure the target attribute parameter of the LBT Cat2.
The method according to claim 9, wherein the at least two attribute parameters include:

The first attribute parameter is used to indicate that a listening time period is determined within the CCA duration, and the channel state of the unlicensed frequency band is detected during the listening time period;

The second attribute parameter is used to indicate that the listening time period is respectively determined in the first time period and the second time period within the CCA duration, and the non-compliance is detected in the two listening time periods. The authorized frequency band performs channel state detection.
The method of claim 10, wherein:

The first attribute parameter is also used to indicate the configuration of the listening period within the CCA duration;

The second attribute parameter is also used to indicate the configuration of the two listening time periods in the first time period and the second time period.
The method according to any one of claims 9 to 11, wherein the CCA duration is 16 us, and the listening time period is 4 us.
The method according to any one of claims 9 to 11, wherein the configuration message further includes the access condition of the LBT Cat2.
The method according to any one of claims 9 to 11, wherein the configuration message is a radio resource control RRC message.
A channel access configuration device, characterized in that the device includes:

The receiving module is configured to receive a configuration message, the configuration message being used to configure the target attribute parameter of the second priority listen-before-speak mechanism LBT Cat2;

The detection module is configured to use the LBT Cat2 on the unlicensed frequency band to detect the channel state according to the target attribute parameter;

Wherein, the target attribute parameter is one of at least two attribute parameters of the LBT Cat2.
The device according to claim 15, wherein:

The detection module is configured to, when the target attribute parameter is the first attribute parameter, determine a listening time period within the CCA duration of the channel vacancy assessment, and for the unlicensed frequency band during the listening time period Perform channel state detection.
The device according to claim 16, wherein:

The detection module is configured to determine a listening time period within the CCA duration by itself; or, according to the first attribute parameter, determine a listening time period within the CCA duration.
The device according to claim 15, wherein:

The detection module is configured to, when the target attribute parameter is a second attribute parameter, respectively determine a listening time period within a first time period and a second time period within the CCA duration, and the two Perform channel state detection on the unlicensed frequency band in the listening time period.
The device according to claim 18, wherein:

The detection module is configured to independently determine the listening time period within the first time period and the second time period within the CCA duration; or, according to the second attribute parameter , Determining the listening time period in the first time period and the second time period within the CCA duration.
The device according to any one of claims 16 to 19, wherein the CCA duration is 16 us, and the listening time period is 4 us.
The apparatus according to any one of claims 16 to 19, wherein the configuration message further includes the access condition of the LBT Cat2,

The detection module is configured to perform the step of using the LBT Cat2 to detect the channel state on an unlicensed frequency band according to the target attribute parameter when the access condition is satisfied.
The apparatus according to any one of claims 16 to 19, wherein the configuration message is a radio resource control RRC message.
A channel access configuration device, characterized in that the device includes:

The determining module is configured to determine the target attribute parameter among at least two attribute parameters of the second priority listen-before-speak mechanism LBT Cat2;

The sending module is configured to send a configuration message, where the configuration message is used to configure the target attribute parameter of the LBT Cat2.
The device according to claim 23, wherein the at least two attribute parameters include:

The first attribute parameter is used to indicate that the listening time period is determined within the CCA duration of the channel idle assessment, and the channel state of the unlicensed frequency band is detected during the listening time period;

The second attribute parameter is used to indicate that a listening time period is determined in the first time period and the second time period within the CCA duration, and the unlicensed frequency band is determined in the two listening time periods. Perform channel state detection.
The device of claim 24, wherein:

The first attribute parameter is also used to indicate the configuration of the listening time period within the CCA duration;

The second attribute parameter is also used to indicate the configuration of the two listening time periods in the first time period and the second time period.
The device according to any one of claims 23 to 25, wherein the CCA duration is 16 us, and the listening time period is 4 us.
The apparatus according to any one of claims 23 to 25, wherein the configuration message further includes an access condition of the LBT Cat2.
The apparatus according to any one of claims 23 to 25, wherein the configuration message is a radio resource control RRC message.
A terminal, characterized in that the terminal includes:

processor;

A transceiver connected to the processor;

Wherein, the processor is configured to load and execute executable instructions to implement the channel access configuration method according to any one of claims 1 to 8.
An access network device, characterized in that the access network device includes:

processor;

A transceiver connected to the processor;

Wherein, the processor is configured to load and execute executable instructions to implement the channel access configuration method according to any one of claims 9 to 14.
A computer-readable storage medium storing at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least one program, the code set or the The instruction set is loaded and executed by the processor to implement the channel access configuration method according to any one of claims 1 to 14.