CN110463280B - Channel access configuration method, device, equipment and storage medium - Google Patents

Channel access configuration method, device, equipment and storage medium Download PDF

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CN110463280B
CN110463280B CN201980001062.5A CN201980001062A CN110463280B CN 110463280 B CN110463280 B CN 110463280B CN 201980001062 A CN201980001062 A CN 201980001062A CN 110463280 B CN110463280 B CN 110463280B
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time period
attribute parameter
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lbt
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CN110463280A (en
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刘洋
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Xiaomi Communications Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
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Abstract

The embodiment of the disclosure provides a channel access configuration method, a device, equipment and a storage medium, belonging to the field of communication, wherein the method comprises the following steps: the base station determines a target attribute parameter from at least two attribute parameters of LBT Cat 2; a base station sends a configuration message, wherein the configuration message is used for configuring the target attribute parameter terminal of the LBT Cat2 to receive the configuration message, and the configuration message is used for configuring the target attribute parameter of the LBT Cat 2; and the terminal detects the channel state by adopting the LBT Cat2 on an unauthorized frequency band according to the target attribute parameters.

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, apparatus, device, and storage medium.
Background
The Third Generation Partnership Project (3 GPP) has developed a study on a 5G Unlicensed spectrum (NR-U), and needs a scheme for supporting independent networking of Unlicensed cells. Considering the continuity of the NR-U design and the 5G design, the design in the 5G New Radio (NR) should be inherited into the NR-U as much as possible.
The unlicensed spectrum should comply with the regulations related to various global regions, and the most important of the regulations are: listen Before Talk (LBT), Occupied Channel Bandwidth (OCB), and Channel Occupied Time (COT), etc.
LBT is the most important mechanism for sharing and using unlicensed spectrum with a Wireless Fidelity (Wi-Fi) network, that is, before a channel is sent, a terminal listens to the idle condition of the channel, and if the channel is busy, the terminal cannot send information of a predetermined time. For LBT, there are different access priorities (e.g., Cat1, Cat2, Cat3, and Cat4, etc.), and in discussing LBT Cat2, there are multiple candidates.
Disclosure of Invention
The embodiment of the application provides a channel access configuration method, a device, equipment and a storage medium, which can be used for solving the problem of how to select a reasonable LBT Cat2 scheme when multiple candidate schemes of LBT Cat2 exist. The technical scheme 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, wherein the configuration message is used for configuring target attribute parameters of LBT Cat 2;
detecting the channel state by adopting the LBT Cat2 on an unauthorized frequency band according to the target attribute parameters;
wherein the target attribute parameter is one of at least two attribute parameters of the LBT Cat 2.
In an optional embodiment, the detecting the channel state by using the LBT Cat2 on the unlicensed frequency band according to the target attribute parameter includes:
when the target attribute parameter is a first attribute parameter, determining a listening time period within a Clear Channel Assessment (CCA) duration, and detecting a Channel state of the unauthorized frequency band in the listening time period.
In an optional embodiment, the determining the listening period within the CCA duration includes:
automatically determining a monitoring time period within the CCA duration; or determining a monitoring time period within the CCA duration according to the first attribute parameter.
In an optional embodiment, the detecting the channel state by using the LBT Cat2 on the unlicensed frequency band according to the target attribute parameter includes:
and when the target attribute parameter is a second attribute parameter, respectively determining a monitoring time period in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods.
In an optional embodiment, the determining the listening time period in the first time period and the second time period within the CCA duration respectively includes:
respectively determining the monitoring time periods in the first time period and the second time period within the CCA duration;
or the like, or, alternatively,
and respectively determining the monitoring time periods in the first time period and the second time period within the CCA duration according to the second attribute parameters.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes an access condition of the LBT Cat2, and the method further includes:
and when the access condition is met, executing the step of detecting the channel state by adopting the LBT Cat2 on an unauthorized frequency band according to the target attribute parameter.
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:
determining a target attribute parameter from at least two attribute parameters of LBT Cat 2;
sending a configuration message for configuring the target attribute parameters of the LBT Cat 2.
In an alternative embodiment, the at least two attribute parameters include:
a first attribute parameter, configured to indicate that a monitoring time period is determined within the CCA duration, and detect a channel state of the unlicensed frequency band over the monitoring time period;
and the second attribute parameter is used for indicating that a monitoring time period is respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods.
In an optional embodiment, the first attribute parameter is further configured to indicate a configuration of the listening time period within the CCA duration;
the second attribute parameter is further configured to indicate configurations of the two listening time periods in the first time period and the second time period.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes the access condition of the LBT Cat 2.
In an optional embodiment, the configuration message is a Radio Resource Control (RRC) message.
According to an aspect of the present disclosure, there is provided a channel access configuration apparatus, the apparatus including:
a receiving module configured to receive a configuration message for configuring target attribute parameters of LBT Cat 2;
a detection module configured to perform detection of a channel state by using the LBT Cat2 on an unlicensed frequency band according to the target attribute parameter;
wherein the target attribute parameter is one of at least two attribute parameters of the LBT Cat 2.
In an optional embodiment, the detection module is configured to determine a listening time period within a duration of a CCA when the target attribute parameter is a first attribute parameter, and perform channel state detection on the unlicensed frequency band over the listening time period.
In an optional embodiment, the detection module is configured to determine a listening period by itself within the CCA duration; or determining a monitoring time period within the CCA duration according to the first attribute parameter.
In an optional embodiment, the detection module is configured to, when the target attribute parameter is a second attribute parameter, respectively determine a listening time period in a first time period and a second time period within the CCA duration, and perform channel state detection on the unlicensed frequency band in the two listening time periods.
In an optional embodiment, the detection module is configured to determine the listening time period by itself in the first time period and the second time period within the CCA duration, respectively; or respectively determining the monitoring time periods in the first time period and the second time period within the CCA duration according to the second attribute parameter.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes an access condition of the LBT Cat2, and the detecting module is configured to perform the step of detecting the channel status on the unlicensed frequency band by using the LBT Cat2 according to the target attribute parameter when the access condition is satisfied.
In an optional embodiment, the configuration message is a radio resource control RRC message.
According to an aspect of the present disclosure, there is provided a channel access configuration apparatus, the apparatus including:
a determining module configured to determine a target attribute parameter among the at least two attribute parameters of LBT Cat 2;
a sending module configured to send a configuration message for configuring the target attribute parameters of the LBT Cat 2.
In an alternative embodiment, the at least two attribute parameters include:
a first attribute parameter, configured to indicate that a monitoring time period is determined within the CCA duration, and detect a channel state of the unlicensed frequency band over the monitoring time period;
and the second attribute parameter is used for indicating that a monitoring time period is respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods.
In an optional embodiment, the first attribute parameter is further configured to indicate a configuration of the listening time period within the CCA duration; the second attribute parameter is further configured to indicate configurations of the two listening time periods in the first time period and the second time period.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes the access condition of the LBT Cat 2.
In an optional embodiment, the configuration message is a radio resource control RRC message.
According to an aspect of the present disclosure, there is provided a terminal including:
a processor;
a transceiver coupled to the processor;
wherein the processor is configured to load and execute executable instructions to implement the channel access configuration method performed by the terminal as described above.
According to an aspect of the present disclosure, there is provided an access network device including:
a processor;
a transceiver coupled to the processor;
wherein the processor is configured to load and execute executable instructions to implement the channel access configuration method performed by the access network device as described above.
According to another aspect of the present disclosure, there is provided a computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the channel access configuration method performed by a terminal or an access network device as described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the configuration information sent by the base station is received by the terminal, the LBT Cat2 is adopted to detect the channel state on the unauthorized frequency band according to the target attribute parameter configured in the configuration information, the LBT Cat2 can be adopted to detect the channel state according to the configuration of an operator and/or the current area, the fairness of sharing the unauthorized frequency spectrum with other communication systems (such as Wi-Fi) is improved, and the compatibility of the terminal with different uplink and downlink switching ductility performance can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of a communication system provided in an exemplary embodiment of the present application;
fig. 2 is a flowchart of a channel access configuration method according to another exemplary embodiment of the present application;
fig. 3 is a block diagram of a channel access configuration apparatus provided in another exemplary embodiment of the present application;
fig. 4 is a block diagram of a channel access configuration apparatus provided in another exemplary embodiment of the present application;
fig. 5 is a block diagram of a terminal provided in an exemplary embodiment of the present application;
fig. 6 is a block diagram of an access network device provided in an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Before describing the embodiments of the present disclosure, a channel detection mechanism involved in the present disclosure is first explained.
The channel detection mechanism may generally include the following five:
first (LBT cat.1): the LBT is not contained, namely the terminal does not need to carry out channel detection before information is transmitted, and the information is directly transmitted. LBT may also be referred to as a listen and avoid mechanism for enabling efficient sharing of unlicensed spectrum. LBT requires that the Channel be monitored, CCA (Clear Channel Assessment) performed, and transmission performed again with the Channel Clear ensured, before transmitting information.
Second (LBT cat.2): LBT mechanism without random back-off procedure. Before transmitting information, the terminal only needs to detect one time granularity, for example, the time granularity may be 25us, and if a channel is idle in the time granularity, the terminal may transmit the information; otherwise, LBT execution fails and the terminal may not transmit information.
Third (LBT cat.3): a random backoff type LBT mechanism with fixed Contention Window Size (CWS), wherein a sending terminal firstly detects whether a channel corresponding to a beam is idle at a first time granularity, selects a value N of a random number in the first Contention Window if the channel corresponding to the beam is idle, and performs channel detection by taking a second time granularity as the time granularity; if the channel corresponding to the beam is idle and the value of the random number is not 0 when the second time granularity is detected, subtracting 1 from the value of the random number, and continuing to perform channel detection by taking the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be busy in the second time granularity, the channel detection is carried out by taking the first time granularity as the time granularity again; if the channel corresponding to the beam is detected to be idle again in the first time granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and recovering to perform channel detection by taking the second time granularity as the time granularity; the channel is not indicated as idle until the value of the random number is reduced to 0.
Fourth (LBT cat.4): CWS variable random back-off LBT mechanism. I.e., based on LBT cat.3, the transmitting terminal may adjust the CWS according to the result of the previous transmission. For example, in the data transmitted within a reference time in the previous transmission process, the ratio of the data that is not correctly received is X, and when X is greater than a threshold, the CWS value is increased. In order to refine parameter setting in the LBT process, four priorities are set in LBT cat.4, each priority corresponds to different parameter configurations, and data transmission of different service types corresponds to different priorities.
The principle of LBT Cat.4 is as follows: the terminal firstly detects whether a channel corresponding to the wave beam is idle or not at a first time granularity, if the channel corresponding to the wave beam is idle, a value N of a random number is selected in a first competition window, and the channel detection is carried out by taking a second time granularity as the time granularity; if the channel corresponding to the beam is idle and the value of the random number is not 0 when the second time granularity is detected, subtracting 1 from the value of the random number, and continuing to perform channel detection by taking the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be busy in the second time granularity, the channel detection is carried out by taking the first time granularity as the time granularity again; if the channel corresponding to the beam is detected to be idle again in the first time granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and recovering to perform channel detection by taking the second time granularity as the time granularity; the channel is not indicated as idle until the value of the random number is reduced to 0.
For example, if the first time granularity is 16us + M × 9us, and the second time granularity is 9us, it is first detected whether the channel in 16us + M × 9us is idle, if the channel is idle, the value N of the random number is selected in the contention window, and then the detection is performed with 9us as the granularity, if the channel is idle, N-1, and the detection continues with 9us as the granularity; otherwise, carrying out channel detection by taking 16us + M9 us as granularity, when detecting that the channel is idle, N-1, and resuming the detection by taking 9us as granularity until the random number is 0 to indicate that the channel is idle, and the channel can be used.
Wherein the value of M is M in Table-1 and Table-2pAnd determining that the channel access priority values p are different and the value of M is different. Table-1 shows four configurations of the priority parameters of the downlink LBT cat.4, and table-2 shows four configurations of the priority parameters of the uplink LBT cat.4, which are slightly different in configuration values.
TABLE-1
Figure GDA0003405275510000071
TABLE-2
Figure GDA0003405275510000072
Figure GDA0003405275510000081
Among the four channel access priorities shown in the above tables-1 and-2, the smaller the value of p, the higher the corresponding priority. m ispIs the number of Extended Clear Channel (ECCA) estimates contained in a delay time, each delay time is composed of a fixed 16us duration and mpECCA, i.e. the first time granularity introduced above. CWmin,pAnd CWmax,pIs the minimum contention window value and the maximum contention window value between which the CWS is generated during the LBT procedure, and then from 0 to the generated contention window CWpThe randomly generated backoff counter N determines the backoff time in the LBT channel detection process, and Tmcot,pIt is the maximum duration that the LBT cat.4 corresponding to each priority can occupy the channel after being successfully executed, and as can be seen from the above table, compared with priorities 1 and 2, the LBT process of priorities 3 and 4 has a longer execution time, and the opportunity of obtaining channel access is relatively low, and in order to ensure fairness, the maximum transmission time that data transmission using the two priorities can occupy is also relatively long.
And a fifth mode: the frame structure Based channel detection mechanism, fbe (frame Based equipment). For FBE, a period is set, and channel detection is performed once at a fixed position of each period, for example, CCA detection is performed during each CCA detection time. If the channel state is detected to be idle, the channel can be occupied for transmission, the length of the maximum channel occupation time is fixed, and CCA detection is carried out again when CCA detection time of the next period is reached; if the channel state is detected to be non-idle, the terminal cannot occupy the channel in the period until the fixed position of the next period is waited to continue to detect. The Fixed Period refers to a time domain unit scheduled by the FBE, for example, the Fixed Period may be a Fixed Frame Period (FFP). The duration of the fixed period may be predefined by the protocol.
It should be noted that the five channel detection mechanisms are only exemplary descriptions, and as the communication technology evolves, the five channel detection mechanisms may change or a new channel detection mechanism is generated, but all the mechanisms are applicable to the technical solution described in the present disclosure.
In discussing the implementation mechanism of LBT cat.2, there are a number of different implementations. Taking CCA duration as 16us (microseconds) and listening period as 4us as an example, at least the following attribute parameters of LBT cat.2 exist:
1. a channel sensing procedure is performed once for a CCA duration of 16 us. The 4us corresponding to the channel sensing procedure is any 4us within 16us seconds, and the position of the any 4us within 16us is determined by the UE.
2. A channel sensing procedure is performed once for a CCA duration of 16 us. The 4us corresponding to the channel sensing process is a fixed 4us within 16us seconds, and the position of the fixed 4us within 16us is predetermined.
3. The channel sensing procedure is performed twice for a CCA duration of 16 us. Illustratively, 16us is divided into a first time period (7us) and a second time period (9 us); the first 4us channel sensing process is performed in a first time period (7us) and the second 4us channel sensing process is performed in a second time period (9 us).
LBT for unlicensed bands is mandatory in japan and europe due to slight differences in other communication systems used in different countries and/or regions, such as different regulatory mechanisms for LBT in different countries, while LBT is relatively loosely regulated in other regions. Thus, there may be slight differences in the LBT Cat2 employed in different countries and/or regions, with each LBT Cat2 corresponding to a respective set of attribute parameters.
On the other hand, the uplink and downlink switching time delay of different terminals may be different, and the uplink and downlink switching time delay of some terminals is shorter and the performance is higher; some terminals have long time delay of uplink and downlink switching and poor performance. There are also slight differences in LBT Cat2 that can be employed by different terminals.
Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure, which may include: a core network 11, an access network 12 and a terminal 13.
The core network 11 includes a number of core network devices 110. The core network device 110 includes Access and Mobility Management Function (AMF), Session Management Function (SMF), and User Plane Management Function (UPF), where AMF is used to control Access authority and switching of the terminal, and SMF is used to provide server continuity and uninterrupted User experience of the server, such as: IP address and anchor change, etc.
Several access network devices 120 are included in access network 12. The access network equipment 120 may be a base station, which is a device deployed in an access network to provide wireless communication functions for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, names of devices having a base station function may be different, for example, in a Long Term Evolution (LTE) system, the device is called eNodeB or eNB; in a 5G New Radio (NR) system, it is called a gNode B or a gnb. The name "base station" may describe, and may vary as communication technology evolves. In this embodiment, the apparatus for providing a wireless communication function for a terminal is collectively referred to as an access network device.
The terminal 13 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem having wireless communication functions, as well as various forms of terminals (UE), Mobile Stations (MS), terminal (terminal device), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. The access network device 120 and the terminal 13 communicate with each other through some air interface technology, for example, a Uu interface.
Optionally, during the wireless communication between the terminal 13 and the access network device 120, the wireless communication may be performed through an authorized frequency band, or may be performed through an unauthorized frequency band. Optionally, in this embodiment of the present application, a description is given of an example in which wireless communication is performed between the terminal 13 and the access network device 120 through an unlicensed frequency band.
Optionally, the access network device is a base station in an NR-U independent networking architecture. Optionally, the communication system also shares the unlicensed spectrum fairly with other communication systems, such as Wi-Fi.
Fig. 2 shows a flowchart of a channel access configuration method according to an exemplary embodiment of the present disclosure. The present application is applied to the communication system shown in fig. 1 in this way. The method comprises the following steps:
step 201, a base station determines a target attribute parameter in at least two attribute parameters of LBT Cat 2;
illustratively, the at least two attribute parameters of LBT Cat2 include:
the first attribute parameter is used for indicating that a monitoring time period is determined in the CCA duration and detecting the channel state of the unauthorized frequency band in the monitoring time period;
and the second attribute parameter is used for indicating that a monitoring time period is respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods.
Optionally, the base station determines, according to the configuration of the operator and the current location area of the terminal, a set of attribute parameters matched with the current location area from among the at least two types of attribute parameters, as target attribute parameters. For example, in the area a, the first attribute parameter is used as the target attribute parameter; the second attribute parameter is used as the target attribute parameter in region B.
Step 202, the base station sends a configuration message, wherein the configuration message is used for configuring target attribute parameters of LBT Cat 2;
the base station sends a configuration message to the terminal. The base station adopts the broadcast message to configure the message to the terminal; or, the base station transmits the configuration message by using a Radio Resource Control (RRC) message.
Step 203, the terminal receives a configuration message;
and the terminal receives the configuration message sent by the base station. A terminal receives a broadcast message sent by a base station and obtains a configuration message from the broadcast message; or, the terminal receives an RRC message sent by the base station, and obtains a configuration message from the RRC message.
And step 204, the terminal detects the channel state by adopting the LBT Cat2 on the unauthorized frequency band according to the target attribute parameters.
In summary, in the method provided in this embodiment, the terminal receives the configuration message sent by the base station, and according to the target attribute parameter configured in the configuration message, the LBT Cat2 is used to detect the channel state in the unlicensed frequency band, and according to the configuration of the operator and/or the current area, the LBT Cat2 is used to detect the channel state, so that the fairness of sharing the unlicensed frequency spectrum with other communication systems is improved, and the method is also applicable to terminals with different uplink and downlink switching ductility.
In an alternative embodiment based on fig. 2, where the target attribute parameter is the first attribute parameter, the step 204 may alternatively be implemented as the following step:
and when the target attribute parameter is the first attribute parameter, the terminal determines a monitoring time period within the CCA duration, and detects the channel state of the unauthorized frequency band in the monitoring time period.
Taking the CCA duration as 16us and the listening time period as 4us as an example, the terminal determines the listening time period of 4us within the CCA duration of 16us, and performs channel state detection on the unlicensed frequency band in the listening time period of 4 us.
The position of the listening time period within the duration of the CCA is determined by the terminal or configured by the base station. That is, the terminal determines the monitoring time period within the CCA duration by itself, or the terminal determines the monitoring time period within the CCA duration according to the first attribute parameter.
For example, if the first attribute parameter indicates that the listening period is at the earliest 4us or the latest 4us of the duration of the CCA, the terminal determines the earliest 4us of 16us as the listening period, or determines the latest 4us of 16us as the listening period.
In an alternative embodiment based on fig. 2, where the target attribute parameter is the second attribute parameter, the step 204 may alternatively be implemented as the following step:
and when the target attribute parameter is a second attribute parameter, the terminal respectively determines a monitoring time period in a first time period and a second time period within the CCA duration, and detects the channel state of the unauthorized frequency band in the two monitoring time periods.
Taking the CCA duration as 16us and the listening time period as 4us as an example, the terminal divides the CCA duration of 16us into a first time period (7us) and a second time period (9us), determines the first listening time period of 4us in the first time period (7us), determines the second listening time period of 4us in the second time period (9us), and performs channel state detection on the unlicensed frequency band on the two listening time periods of 4 us.
The position of the listening time period within the duration of the CCA is determined by the terminal or configured by the base station. That is, the terminal determines the monitoring time period in the first time period and the second time period of the CCA duration, or the terminal determines the monitoring time period in the first time period and the second time period of the CCA duration according to the second attribute parameter.
In an alternative embodiment based on fig. 2, the attribute parameters of LBT Cat2 may also include other types of attribute parameters, which is not limited by the embodiment of the present disclosure.
In an optional embodiment based on fig. 2, the configuration message further carries an access condition of LBT Cat 2. And when the access condition of the LBT Cat2 is met, the terminal executes the step of adopting the LBT Cat2 to detect the channel state on the unauthorized frequency band according to the target attribute parameters.
Fig. 3 is a block diagram of a channel access configuration apparatus, which may be implemented as part of or all of a terminal by software, hardware, or a combination of the two, according to another exemplary embodiment of the present application, and includes:
a receiving module 302 configured to receive a configuration message for configuring target attribute parameters of LBT Cat 2;
a detection module 304, configured to perform detection of a channel state by using the LBT Cat2 on an unlicensed frequency band according to the target attribute parameter;
wherein the target attribute parameter is one of at least two attribute parameters of the LBT Cat 2.
In an optional embodiment, the detecting module 304 is configured to determine a listening time period within a duration of a CCA when the target attribute parameter is the first attribute parameter, and perform channel status detection on the unlicensed frequency band over the listening time period.
In an optional embodiment, the detection module 304 is configured to determine the listening period by itself within the CCA duration; or determining a monitoring time period within the CCA duration according to the first attribute parameter.
In an optional embodiment, the detecting module 304 is configured to, when the target attribute parameter is a second attribute parameter, respectively determine a listening time period in a first time period and a second time period within the CCA duration, and perform channel state detection on the unlicensed frequency band over the two listening time periods.
In an optional embodiment, the detection module 304 is configured to determine the listening time period by itself in the first time period and the second time period within the CCA duration, respectively; or respectively determining the monitoring time periods in the first time period and the second time period within the CCA duration according to the second attribute parameter.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes an access condition of the LBT Cat2, and the detecting module 304 is configured to perform the step of detecting the channel status on the unlicensed frequency band by using the LBT Cat2 according to the target attribute parameter when the access condition is satisfied.
In an optional embodiment, the configuration message is a radio resource control RRC message.
Fig. 4 is a block diagram of a channel access configuration apparatus provided in another exemplary embodiment of the present application, which may be implemented by software, hardware, or a combination of the two, and is a part or all of an access network device, where the apparatus includes:
a determining module 402 configured to determine a target attribute parameter among the at least two attribute parameters of LBT Cat 2;
a sending module 404 configured to send a configuration message for configuring the target attribute parameters of the LBT Cat 2.
In an alternative embodiment, the at least two attribute parameters include:
a first attribute parameter, configured to indicate that a monitoring time period is determined within the CCA duration, and detect a channel state of the unlicensed frequency band over the monitoring time period;
and the second attribute parameter is used for indicating that a monitoring time period is respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods.
In an optional embodiment, the first attribute parameter is further configured to indicate a configuration of the listening time period within the CCA duration; the second attribute parameter is further configured to indicate configurations of the two listening time periods in the first time period and the second time period.
In an optional embodiment, the duration of the CCA is 16us, and the duration of the listening period is 4 us.
In an optional embodiment, the configuration message further includes the access condition of the LBT Cat 2.
In an optional embodiment, the configuration message is a radio resource control RRC message.
Fig. 5 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present disclosure, where 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 one communication component, which may be a communication chip.
The memory 504 is connected to the processor 501 via a bus 505.
The memory 504 may be used to store at least one instruction that the processor 501 is configured to execute to implement the various steps in the above-described method embodiments.
Further, the memory 504 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random 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, such as a memory, including instructions executable by a processor of a terminal to perform a method performed by a terminal side in the above-described detection method of control signaling. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium, wherein instructions, when executed by a processor of a terminal, enable the terminal to perform the above-described channel access configuration method.
Fig. 6 is a block diagram illustrating an access network device 150 according to an example embodiment. The access network device 150 may be a base station.
The access network device 150 may include: processor 151, receiver 152, transmitter 153, and memory 154. The receiver 152, the transmitter 153, and the memory 154 are connected to the processor 151 through buses, respectively.
The processor 151 includes one or more processing cores, and the processor 151 executes software programs and modules to perform the method performed by the access network device in the channel access configuration method provided by the embodiment of the present disclosure. Memory 154 may be used to store software programs and modules. In particular, the memory 154 may store an operating system 641, an application program module 642 required for at least one function. The receiver 152 is used for receiving communication data transmitted by other devices, and the transmitter 153 is used for transmitting communication data to other devices.
An exemplary embodiment of the present disclosure also provides a channel access configuration system (or referred to as a communication system), including: a terminal and an access network device;
the terminal comprises a channel access configuration device provided by the embodiment shown in fig. 3;
the access network equipment comprises a channel access configuration device provided by the embodiment shown in fig. 4.
An exemplary embodiment of the present disclosure also provides a channel access configuration system (or referred to as a communication system), including: a terminal and an access network device;
the terminal comprises the terminal provided by the embodiment shown in fig. 5;
the access network device includes the access network device provided in the embodiment shown in fig. 6.
An exemplary embodiment of the present disclosure also provides a computer-readable storage medium, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the steps executed by the terminal or the access network device in the channel access configuration method provided by the foregoing various method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (19)

1. A method for channel access configuration, the method comprising:
receiving a configuration message, wherein the configuration message is used for configuring target attribute parameters of a listen-before-talk mechanism LBT Cat2 of a second priority;
detecting the channel state by adopting the LBT Cat2 on an unauthorized frequency band according to the target attribute parameters;
wherein the target attribute parameter is one of at least two attribute parameters of the LBT Cat2, the at least two attribute parameters including:
the first attribute parameter is used for indicating that a monitoring time period is determined in the Channel Clear Assessment (CCA) duration, and detecting the channel state of the unauthorized frequency band in the monitoring time period; the first attribute parameter is further configured to indicate a location of the listening time period within the CCA duration;
the second attribute parameter is used for indicating that the monitoring time periods are respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods; the second attribute parameter is further configured to indicate a location of the listening time period within the first time period and the second time period.
2. The method of claim 1, wherein the CCA duration is 16us and the listening period is 4us in duration.
3. The method of claim 1, wherein the configuration message further comprises an access condition of the LBT Cat2, and wherein the method further comprises:
and when the access condition is met, executing the step of detecting the channel state by adopting the LBT Cat2 on an unauthorized frequency band according to the target attribute parameter.
4. The method of claim 1, wherein the configuration message is a Radio Resource Control (RRC) message.
5. A method for channel access configuration, the method comprising:
determining a target attribute parameter from at least two attribute parameters of a listen-before-talk mechanism LBT Cat2 with a second priority;
sending a configuration message for configuring the target attribute parameters of the LBT Cat 2;
wherein the at least two attribute parameters include:
the first attribute parameter is used for indicating that a monitoring time period is determined in the CCA duration, and detecting the channel state of the unauthorized frequency band in the monitoring time period; the first attribute parameter is further configured to indicate a location of the listening time period within the CCA duration;
the second attribute parameter is used for indicating that the monitoring time periods are respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods; the second attribute parameter is further configured to indicate a location of the listening time period within the first time period and the second time period.
6. The method of claim 5, wherein the CCA duration is 16us and the listening period is 4 us.
7. The method of claim 5, wherein the configuration message further comprises an access condition of the LBT Cat 2.
8. The method of claim 5, wherein the configuration message is a Radio Resource Control (RRC) message.
9. An apparatus for channel access configuration, the apparatus comprising:
a receiving module configured to receive a configuration message for configuring a target attribute parameter of a second priority listen-before-talk mechanism, LBT Cat 2;
a detection module configured to perform detection of a channel state by using the LBT Cat2 on an unlicensed frequency band according to the target attribute parameter;
wherein the target attribute parameter is one of at least two attribute parameters of the LBT Cat2, the at least two attribute parameters including:
the first attribute parameter is used for indicating that a monitoring time period is determined in the Channel Clear Assessment (CCA) duration, and detecting the channel state of the unauthorized frequency band in the monitoring time period; the first attribute parameter is further configured to indicate a location of the listening time period within the CCA duration;
the second attribute parameter is used for indicating that the monitoring time periods are respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods; the second attribute parameter is further configured to indicate a location of the listening time period within the first time period and the second time period.
10. The apparatus of claim 9, wherein the CCA duration is 16us and the listening period is 4us in duration.
11. The apparatus of claim 9, wherein the configuration message further comprises an access condition of the LBT Cat2,
the detection module is configured to perform the step of detecting the channel state by using the LBT Cat2 on the unlicensed frequency band according to the target attribute parameter when the access condition is satisfied.
12. The apparatus of claim 9, wherein the configuration message is a Radio Resource Control (RRC) message.
13. An apparatus for channel access configuration, the apparatus comprising:
a determining module configured to determine a target attribute parameter among at least two attribute parameters of a second priority listen-before-talk mechanism LBT Cat 2;
a sending module configured to send a configuration message for configuring the target attribute parameters of the LBT Cat 2;
wherein the at least two attribute parameters include:
the first attribute parameter is used for indicating that a monitoring time period is determined in the Channel Clear Assessment (CCA) duration, and detecting the channel state of the unauthorized frequency band in the monitoring time period; the first attribute parameter is further configured to indicate a location of the listening time period within the CCA duration;
the second attribute parameter is used for indicating that the monitoring time periods are respectively determined in a first time period and a second time period within the CCA duration, and detecting the channel state of the unauthorized frequency band in the two monitoring time periods; the second attribute parameter is further configured to indicate a location of the listening time period within the first time period and the second time period.
14. The apparatus of claim 13, wherein the CCA duration is 16us and the listening period is 4us in duration.
15. The apparatus of claim 13, wherein the configuration message further comprises an access condition of the LBT Cat 2.
16. The apparatus of claim 13, wherein the configuration message is a Radio Resource Control (RRC) message.
17. A terminal, characterized in that the terminal comprises:
a processor;
a transceiver coupled to the processor;
wherein the processor is configured to load and execute executable instructions to implement the channel access configuration method of any of claims 1 to 4.
18. An access network device, characterized in that the access network device comprises:
a processor;
a transceiver coupled to the processor;
wherein the processor is configured to load and execute executable instructions to implement the channel access configuration method of any of claims 5 to 8.
19. A computer-readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the channel access configuration method according to any one of claims 1 to 8.
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