CN112788775A

CN112788775A - Method and equipment for LBT

Info

Publication number: CN112788775A
Application number: CN201911078529.4A
Authority: CN
Inventors: 刘进华
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2021-05-11
Anticipated expiration: 2039-11-06
Also published as: WO2021088965A1; CN112788775B

Abstract

The embodiment of the invention discloses a method and equipment for carrying out LBT, which relate to the technical field of communication and can solve the problem of larger time delay of low-priority LCH data. The method comprises the following steps: determining the busy degree of a channel; carrying out LBT on the channel by adopting the CAPC value corresponding to the busy degree to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value. The embodiment of the invention is applied to the LBT process of the UE or the network equipment according to the busy degree of the channel.

Description

Method and equipment for LBT

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for carrying out LBT.

Background

Generally, when data (e.g., Signaling Radio Bearers (SRB) data and Data Radio Bearers (DRB) data) of different Logical Channels (LCHs) are transmitted, a User Equipment (UE) may use different Channel Access Priority Class (CAPC) values to perform Listen Before Talk (LBT) to obtain different types of Channel Occupancy Time (COT).

Currently, in order to ensure the transmission of data of a high-priority LCH, the UE preferentially selects some lower CAPC values (the lower the CAPC value is, the higher the priority of the LCH is) for LBT to obtain a COT, and transmits the data of the LCH with the lower CAPC value on the COT, thereby implementing the transmission of the data of the high-priority LCH. In this way, data of the LCH with low priority may not be transmitted on the COT, so that the data of the LCH with low priority cannot be transmitted in time, that is, the data of the LCH with low priority has a large delay.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for LBT (local binary transmission), which can solve the problem of larger time delay of LCH (low priority link) data.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

in a first aspect of the embodiments of the present invention, a method for performing LBT is provided, where the method is applied to a user equipment or a network device, and the method for performing LBT includes: determining the busy degree of a channel; carrying out LBT on the channel by adopting the CAPC value corresponding to the busy degree to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value.

In a second aspect of the embodiments of the present invention, an apparatus is provided, where the apparatus is a user equipment or a network device, and the apparatus includes: the device comprises a determining module and a processing module. The determining module is used for determining the busy degree of the channel. The processing module is used for carrying out LBT on the channel by adopting the CAPC value corresponding to the busyness degree determined by the determining module so as to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value.

In a third aspect of embodiments of the present invention, there is provided an apparatus comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for performing LBT as described in the first aspect.

A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for performing LBT as described in the first aspect.

In the embodiment of the present invention, the UE or the network device may perform LBT on the channel by using the CAPC value corresponding to the busy degree according to the busy degree of the channel to obtain the COT (the COT is used to transmit LCH data corresponding to the CAPC value). The UE or the network equipment can determine the busy degree of the channel, determine a CAPC value according to the busy degree of the channel, and then perform LBT by using the CAPC value, namely determine whether to transmit the data of the LCH with the high priority or the data of the LCH with all priorities according to the busy degree of the channel, rather than directly transmit the data of the LCH with the high priority, so that the probability that the data of the LCH with the low priority cannot be transmitted in time can be reduced, and the time delay of the data of the LCH with the low priority can be reduced.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a method for performing LBT according to an embodiment of the present invention;

fig. 3 is a second schematic diagram of a method for performing LBT according to an embodiment of the present invention;

fig. 4 is a third schematic diagram of a method for performing LBT according to an embodiment of the present invention;

FIG. 5 is a fourth schematic diagram of a method for performing LBT according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 8 is a hardware diagram of a UE according to an embodiment of the present invention;

fig. 9 is a hardware schematic diagram of a network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first" and "second," and the like, in the description and in the claims of embodiments of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first set of LCHs and the second set of LCHs, etc., are used to distinguish between different sets of LCHs, rather than to describe a particular order of LCH sets.

In the description of the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of elements refers to two elements or more.

The term "and/or" herein is an association relationship describing an associated object, and means that there may be three relationships, for example, a display panel and/or a backlight, which may mean: there are three cases of a display panel alone, a display panel and a backlight at the same time, and a backlight alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, input/output denotes input or output.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The following explains some concepts and/or terms involved in the method and apparatus for performing LBT according to the embodiments of the present invention.

Currently, SRB data and DRB data may be configured with different CAPC values. Under the condition that the UE has SRB data and DRB data at the same time, selecting to carry out LBT according to a CAPC value corresponding to the SRB data or the DRB data to initiate COTs of different types, wherein the data with low priority cannot use the COT initiated according to the CAPC of the SRB data to carry out data transmission; although COT initiated according to the CAPC value corresponding to the LCH of the DRB data with low priority can be used for sending SRB data, the probability of LBT failure is increased, namely the probability of initiating COT failure is increased, and SRB data cannot be sent.

Data of different LCHs can be transmitted by multiplexing the same COT, in order to transmit the data of different LCHs by using the same COT, the CAPC value of the LCH with the largest CAPC value (namely the priority of the LBT is lowest) is adopted for LBT, so that the initiated COT can be used for transmitting the data of all LCHs, the LCH with a low CAPC value can use the COT initiated by the LBT with a higher CAPC value for data transmission, and the other way is not possible. Therefore, when there are many LCH data to be transmitted, the UE selects the COT that the CAPC value gets by the method to compete for the transmission of all these LCH data, so as to reduce the probability that some LCH data rates configured with high CAPC values are too low. In general, a network device configures a LCH with a high priority with a smaller CAPC value (i.e., the probability of the corresponding LBT competing for a channel is higher), and configures a LCH with a low priority with a larger CAPC value (i.e., the probability of the corresponding LBT competing for a channel is lower).

When transmitting with a configuration grant (configured grant), the UE may determine a CAPC value for LBT according to the transmitted traffic data, and the initiated COT is used to transmit the traffic data.

The embodiment of the invention provides a method and equipment for carrying out LBT, wherein UE or network equipment can firstly determine the busy degree of a channel, determine a CAPC value according to the busy degree of the channel, and then carry out LBT by adopting the CAPC value, namely determine whether to transmit data of LCH with high priority or data of LCH with all priority according to the busy degree of the channel, rather than directly transmit the data of the LCH with high priority, so that the probability that the data of the LCH with low priority cannot be transmitted in time can be reduced, and the time delay of the data of the LCH with low priority can be reduced.

The method and the device for LBT provided by the embodiment of the invention can be applied to a communication system. The method can be particularly applied to the LBT process of the UE or the network equipment according to the busy degree of the channel based on the communication system.

Fig. 1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system may include a UE 01 and a network device 02. Wherein, the UE 01 and the network device 02 can establish connection and communicate.

A UE is a device that provides voice and/or data connectivity to a user, a handheld device with wired/wireless connectivity, or other processing device connected to a wireless modem. A UE may communicate with one or more core network devices via a Radio Access Network (RAN). The UE may be a mobile terminal such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal, or a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device that exchanges speech and/or data with the RAN, such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and so on. The UE may also be referred to as a user agent (user agent) or a terminal device, etc.

The network device may be a base station (e.g., a primary base station or a secondary base station). A base station is a device deployed in a RAN for providing wireless communication functions for UEs. 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, the names of devices with base station functionality may differ, for example, in third generation mobile communication (3G) networks, referred to as base stations (NodeB); in an LTE system, referred to as an evolved NodeB (eNB or eNodeB); in fifth generation mobile communication (5G) networks, referred to as a gNB, and so on. As communication technology evolves, the name "base station" may change. It is to be noted that the embodiment of the present invention is only illustrated by using a 5G network as an example, and should not be taken as a scenario limitation of the embodiment of the present invention.

A method and an apparatus for performing LBT according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings.

Based on the communication system shown in fig. 1, an embodiment of the present invention provides a method for performing LBT, which is applied to a UE. As shown in fig. 2, the method for performing LBT may include

steps

201 and 202 described below.

Step 201, the UE determines the busy degree of the channel.

In the embodiment of the present invention, the busy level may be understood as that a channel is in a busy state or in a non-busy state (for example, an idle state).

In the embodiment of the invention, under the condition that the UE contains the data of different LCHs to be transmitted, the UE can determine the busy degree of the channel so as to determine whether the channel can transmit the data of the different LCHs.

Optionally, in this embodiment of the present invention, the data of different LCHs may include SRB data and DRB data.

Optionally, in the embodiment of the present invention, different LCHs are configured with different CAPC values, where the different CAPC values correspond to priorities of the different LCHs (the smaller the CAPC value is, the higher the priority of the LCH is), that is, the different CAPC values correspond to transmission priorities of different service data (for example, SRB data and DRB data).

Optionally, in the embodiment of the present invention, with reference to fig. 2, as shown in fig. 3, before the step 201, the method for performing LBT according to the embodiment of the present invention may further include the following step 301 and step 302, and the step 201 may be specifically implemented by the following step 201 a.

Step 301, the network device sends configuration information to the UE.

Step 302, the UE receives configuration information sent by the network device.

In the embodiment of the invention, the configuration information is used for determining the busy degree of the channel.

Optionally, in this embodiment of the present invention, the configuration information may include at least one of the following: a channel measurement period, a channel occupancy threshold, a Received Signal Strength Indicator (RSSI) threshold, and an LBT success rate threshold.

Optionally, in this embodiment of the present invention, the threshold value of the channel occupancy (i.e. the threshold value of the channel occupancy ratio) is: the ratio threshold of the number of symbols (symbols) in an occupied state (e.g., received power > a predetermined threshold) during channel detection to the number of symbols (symbols) during channel detection is determined.

Optionally, in the embodiment of the present invention, the network device may send indication information to the network device to indicate the UE to determine the busy degree of the channel.

Step 201a, the UE determines the busy degree of the channel according to the configuration information.

Optionally, in a possible implementation manner of the embodiment of the present invention, the configuration information includes a threshold value of the channel occupancy rate. The step 201a can be realized by the step 201a1 or the step 201a2 described below.

Step 201a1, if the occupancy rate of the channel is greater than or equal to the threshold value of the occupancy rate of the channel, the UE determines that the channel is in a busy state.

In the embodiment of the present invention, the UE may perform measurement and processing (e.g., statistics) on the channel, and determine that the channel is in a busy state when the measured occupancy of the channel is greater than or equal to the occupancy threshold of the channel.

Optionally, in the embodiment of the present invention, in a case that the UE has data of a high-priority LCH and data of a low-priority LCH to be transmitted, the UE may perform measurement and processing on a channel to obtain an occupancy (i.e., an occupancy ratio) of the channel, and then compare the occupancy with a threshold of the occupancy of the channel to determine whether the channel is in a busy state.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 201a1 can be specifically realized by the step 201a11 described below.

Step 201a11, if the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the threshold value of the occupancy rate of the channel, the UE determines that the channel is in a busy state.

In the embodiment of the invention, the UE can determine whether the channel is in a busy state according to the channel measurement period and the channel occupancy threshold value configured by the network equipment.

Step 201a2, if the occupancy rate of the channel is less than the threshold value of the occupancy rate of the channel, the UE determines that the channel is in a non-busy state.

In the embodiment of the present invention, the UE may perform measurement and processing (e.g., statistics) on the channel, and determine that the channel is in a non-busy state when the occupancy of the measured channel is less than the occupancy threshold of the channel.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 201a2 can be specifically realized by the step 201a21 described below.

Step 201a21, if the occupancy of the channel measured in the channel measurement period is less than the threshold value of the occupancy of the channel, the UE determines that the channel is in a non-busy state.

Optionally, in the embodiment of the present invention, the UE may also use the occupancy rate of the channel measured outside the channel measurement period as a basis for determining whether the channel is in a busy state; that is, if the occupancy rate of the channel measured outside the channel measurement period is greater than or equal to the occupancy rate threshold value of the channel, the UE determines that the channel is in a busy state, and if the occupancy rate of the channel measured outside the channel measurement period is less than the occupancy rate threshold value of the channel, the UE determines that the channel is in a non-busy state.

Optionally, in another possible implementation manner of the embodiment of the present invention, the configuration information includes an RSSI threshold value. The step 201a can be realized by the step 201a3 or the step 201a4 described below.

In step 201a3, if the RSSI of the channel is greater than or equal to the RSSI threshold value, the UE determines that the channel is busy.

In the embodiment of the present invention, the UE may perform measurement and processing (e.g., statistics) on the channel, and determine that the channel is in a busy state when the RSSI of the measured channel is greater than or equal to an RSSI threshold value (e.g., x dBm).

Optionally, in the embodiment of the present invention, when the UE has data of a high-priority LCH and data of a low-priority LCH to be transmitted, the UE may perform measurement and processing on a channel to obtain an RSSI of the channel, and then compare the RSSI with an RSSI threshold value to determine whether the channel is in a busy state.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 201a3 can be specifically realized by the step 201a31 described below.

In step 201a31, if the RSSI of the channel measured in the channel measurement period is greater than or equal to the RSSI threshold value, the UE determines that the channel is in a busy state.

In the embodiment of the invention, the UE can determine whether the channel is in a busy state or not according to the channel measurement period and the RSSI threshold value configured by the network equipment.

Step 201a4, if the RSSI of the channel is less than the RSSI threshold value, the UE determines that the channel is in a non-busy state.

In the embodiment of the present invention, the UE may perform measurement and processing (e.g., statistics) on the channel, and determine that the channel is in a non-busy state when the RSSI of the measured channel is smaller than the RSSI threshold value.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 201a4 can be specifically realized by the step 201a41 described below.

In step 201a41, if the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold value, the UE determines that the channel is in a non-busy state.

Optionally, in the embodiment of the present invention, the UE may also use the RSSI of the channel measured outside the channel measurement period as a basis for determining whether the channel is in a busy state; that is, if the RSSI of the channel measured outside the channel measurement period is greater than or equal to the RSSI threshold value, the UE determines that the channel is in a busy state, and if the RSSI of the channel measured outside the channel measurement period is less than the RSSI threshold value, the UE determines that the channel is in a non-busy state.

Optionally, in another possible implementation manner of the embodiment of the present invention, the configuration information includes an LBT success rate threshold. The step 201a can be realized by the step 201a5 or the step 201a6 described below.

Step 201a5, if the success rate of the LBT is smaller than the threshold, the UE determines that the channel is busy.

Optionally, in the embodiment of the present invention, in a case that the UE has data of a high-priority LCH and data of a low-priority LCH to be transmitted, the UE may compare the success rate of the performed LBT with an LBT success rate threshold value to determine whether the channel is in a busy state.

Optionally, in the embodiment of the present invention, the network device may also configure an LBT failure rate threshold value to the UE, so that the UE determines whether the channel is in a busy state.

Optionally, in this embodiment of the present invention, the success rate of the performed LBT may be understood as: the success rate of all LBTs that the UE has performed within a period of time (e.g., 100ms), or the success rate of the first N (N is a positive integer) LBTs that the UE has performed. When N is 1, that is, the UE determines whether the channel is busy according to whether LBT performed last time is successful.

In step 201a6, if the success rate of the performed LBT is greater than or equal to the LBT success rate threshold, the UE determines that the channel is in a non-busy state.

Step 202, the UE performs LBT on the channel by using the CAPC value corresponding to the busy degree to obtain the COT.

In the embodiment of the present invention, the COT is used to transmit LCH data corresponding to the CAPC value.

It can be understood that the busy degree of the channel is different, and the CAPC value adopted by the UE during LBT is different, so that the transmitted LCH data is different.

Optionally, in the embodiment of the present invention, if the UE determines that the channel is in a busy state, the UE may determine to transmit data of the LCH with a high priority, that is, perform LBT on the channel by using the CAPC value of the LCH with the high priority to obtain a COT, where the COT is used to transmit data of the LCH corresponding to the CAPC value (that is, data of the LCH with the high priority).

Optionally, in the embodiment of the present invention, if the UE determines that the channel is in a non-busy state, the UE may determine to transmit data of an LCH with a high priority and data of an LCH with a low priority, that is, perform LBT on the channel by using a CAPC value of the LCH with a low priority to obtain a COT, where the COT is used to transmit data of the LCH corresponding to the CAPC value (that is, data of the LCH with a high priority and data of the LCH with a low priority).

In the embodiment of the invention, the UE can determine whether the channel is in a busy state according to the configuration information sent by the network equipment, and initiates a COT for all LCHs in the LCH set with high priority to transmit data of the LCH with high priority under the condition that the channel is in the busy state, and initiates a COT for all LCHs in the LCH set with high priority and all LCHs in the LCH set with low priority to transmit data of the LCH with high priority and data of the LCHs with low priority under the condition that the channel is not in the busy state.

Optionally, in this embodiment of the present invention, as shown in fig. 4 in combination with fig. 2, the step 202 may be specifically implemented by a step 202a or a step 202b described below.

It should be noted that only step 202a is shown in fig. 4, and step 202b is not shown.

Step 202a, if the channel is in a busy state, the UE performs LBT on the channel by using the CAPC value of the first LCH to obtain the COT.

In an embodiment of the present invention, the first LCH is an LCH with a largest CAPC value in the first LCH set, and the COT is specifically configured to transmit data of the LCH in the first LCH set.

In the embodiment of the present invention, when the channel is in a busy state, the UE may initiate a COT for the LCH (or LCH set of high priority), that is, the UE may determine the LBT parameter and perform the LBT by using the CAPC value of the LCH with the largest CAPC value in the LCH set of high priority, and after the channel competition succeeds, send the LCH data in the LCH set of high priority on the COT.

Step 202b, if the channel is in a non-busy state, the UE performs LBT on the channel by using the CAPC value of the second LCH to obtain the COT.

In an embodiment of the present invention, the second LCH is an LCH with a largest CAPC value in the second LCH set, and the COT is specifically configured to transmit data of the LCH in the second LCH set. Wherein the second set of LCHs comprises the first set of LCHs and a third set of LCHs, and the priority of the LCH with the lowest priority in the first set of LCHs is not lower than (i.e. higher than or equal to) the priority of any LCH in the third set of LCHs.

It is to be understood that the second LCH set includes a high-priority LCH set (i.e., the first LCH set) and a low-priority LCH set (i.e., the third LCH set), and all LCHs in the high-priority LCH set have no lower priority than all LCHs in the low-priority LCH set.

In the embodiment of the present invention, when the channel is in a non-busy state, the UE may initiate a COT for a high-priority LCH (or a high-priority LCH set) and a low-priority LCH (or a low-priority LCH set), that is, the UE may determine LBT parameters and perform LBT using a CAPC value of an LCH with a largest CAPC value among the LCHs, and send data of all LCHs (that is, data of all LCHs in the high-priority LCH set and data of all LCHs in the low-priority LCH set) on the COT after successful contention for the channel.

Optionally, in this embodiment of the present invention, the first LCH set may include an LCH carried by an SRB, and the third LCH set may include an LCH carried by a DRB.

Optionally, in this embodiment of the present invention, the third LCH set may also include other LCHs besides the LCH carried by the SRB.

It can be understood that, when the UE has a high-priority LCH set and a low-priority LCH set (both are LCHs with data), the two sets respectively correspond to a set of CAPC values, wherein the LCH in the high-priority LCH set corresponds to a lower CAPC value, while the LCH in the low-priority LCH set corresponds to a higher CAPC value, and in the same LCH set, the CAPC values corresponding to different LCHs are close to each other; when the channel is in a busy state, the UE may perform LBT according to a maximum CAPC value in all LCHs in the LCH set of high priority to initiate a COT for data transmission of the LCHs in the LCH set of high priority; when the channel is not busy, the UE may merge the two LCH sets (i.e., the UE does not distinguish between the high-priority LCH set and the low-priority LCH set), and determine to perform LBT according to the largest CAPC value to initiate one COT for data transmission of all LCHs.

The embodiment of the invention provides a method for LBT, wherein UE can adopt a CAPC value corresponding to the busy degree to carry out LBT on a channel according to the busy degree of the channel so as to obtain COT (the COT is used for transmitting LCH data corresponding to the CAPC value). The UE can determine the busy degree of the channel, determine a CAPC value according to the busy degree of the channel, and then perform LBT by using the CAPC value, namely determine whether to transmit the data of the LCH with high priority or the data of the LCH with all priorities according to the busy degree of the channel, rather than directly transmit the data of the LCH with high priority, so that the probability that the data of the LCH with low priority cannot be transmitted in time can be reduced, and the time delay of the data of the LCH with low priority can be reduced.

Based on the communication system shown in fig. 1, an embodiment of the present invention provides a method for performing LBT, which is applied to a network device. As shown in fig. 5, the method for performing LBT may include

steps

401 and 402 described below.

Step 401, the network device determines how busy the channel is.

Optionally, in the embodiment of the present invention, before the step 401, the method for performing LBT according to the embodiment of the present invention may further include the following step 501, and the step 401 may be specifically implemented by the following step 401 a.

Step 501, the network device obtains configuration information.

Step 401a, the network device determines the busy degree of the channel according to the configuration information.

Optionally, in a possible implementation manner of the embodiment of the present invention, the configuration information includes a threshold value of the channel occupancy rate. The step 401a can be realized by the step 401a1 or the step 401a2 described below.

Step 401a1, if the occupancy rate of the channel is greater than or equal to the threshold value of the occupancy rate of the channel, the network device determines that the channel is in a busy state.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 401a1 can be specifically realized by the step 401a11 described below.

Step 401a11, if the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the threshold value of the occupancy rate of the channel, the network device determines that the channel is in a busy state.

Step 401a2, if the occupancy rate of the channel is less than the occupancy rate threshold value of the channel, the network device determines that the channel is in a non-busy state.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 401a2 can be specifically realized by the step 401a21 described below.

Step 401a21, if the occupancy of the channel measured in the channel measurement period is less than the threshold value of the occupancy of the channel, the network device determines that the channel is in a non-busy state.

Optionally, in another possible implementation manner of the embodiment of the present invention, the configuration information includes an RSSI threshold value. The step 401a can be realized by the step 401a3 or the step 401a4 described below.

Step 401a3, if the RSSI of the channel is greater than or equal to the RSSI threshold value, the network device determines that the channel is busy.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 401a3 can be specifically realized by the step 401a31 described below.

Step 401a31, if the RSSI of the channel measured in the channel measurement period is greater than or equal to the RSSI threshold value, the network device determines that the channel is busy.

Step 401a4, if the RSSI of the channel is less than the RSSI threshold value, the network device determines that the channel is not busy.

Optionally, in this embodiment of the present invention, the configuration information may further include a channel measurement period. The step 401a4 can be specifically realized by the step 401a41 described below.

Step 401a41, if the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold value, the network device determines that the channel is in a non-busy state.

Optionally, in another possible implementation manner of the embodiment of the present invention, the configuration information includes an LBT success rate threshold. The step 401a can be realized by the step 401a5 or the step 401a6 described below.

Step 401a5, if the success rate of the LBT is smaller than the threshold, the network device determines that the channel is busy.

Step 401a6, if the success rate of the LBT is greater than or equal to the LBT success rate threshold, the network device determines that the channel is not busy.

Step 402, the network device performs LBT on the channel by using the CAPC value corresponding to the busy degree to obtain the COT.

Optionally, in this embodiment of the present invention, the step 402 may be specifically implemented by the following step 402a or step 402 b.

Step 402a, if the channel is in a busy state, the network device performs LBT on the channel by using the CAPC value of the first LCH to obtain the channel occupation time COT.

And step 402b, if the channel is in a non-busy state, the network equipment adopts the CAPC value of the second LCH to carry out LBT on the channel so as to obtain the channel occupation time COT.

In the embodiment of the present invention, when the network device has a plurality of LCHs corresponding to different CAPCs and data needs to be sent, the network device may execute the method for performing LBT provided in the embodiment of the present invention. Moreover, all the execution flows are internal flows of the network device, and depend on the implementation of the network device.

It should be noted that, for specific description of the method for performing LBT performed by the network device, reference may be made to the specific description of the method for performing LBT performed by the UE in the foregoing embodiment, and details are not described here again.

The embodiment of the invention provides a method for carrying out LBT, wherein network equipment can firstly determine the busy degree of a channel, determine a CAPC value according to the busy degree of the channel, and then carry out LBT by adopting the CAPC value, namely determine whether to transmit data of LCH with high priority or data of LCH with all priority according to the busy degree of the channel, rather than directly transmit the data of the LCH with high priority, so that the probability that the data of the LCH with low priority cannot be transmitted in time can be reduced, and the time delay of the data of the LCH with low priority is reduced.

Fig. 6 shows a schematic diagram of a possible structure of a device involved in the embodiment of the present invention, where the device may be a UE or a network device. As shown in fig. 6, an apparatus 60 provided by an embodiment of the present invention may include: a determination module 61 and a processing module 62.

The determining module 61 is configured to determine a busy level of the channel. A processing module 62, configured to perform LBT on the channel by using the CAPC value corresponding to the busyness determined by the determining module 61 to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value.

In a possible implementation manner, referring to fig. 6, as shown in fig. 7, an apparatus 60 provided in an embodiment of the present invention further includes: an acquisition module 63. The obtaining module 63 is configured to obtain configuration information before the determining module 61 determines the busy degree of the channel, where the configuration information is used to determine the busy degree of the channel. The determining module 61 is specifically configured to determine the busy level of the channel according to the configuration information acquired by the acquiring module 63.

In a possible implementation manner, the configuration information may include at least one of the following: a channel measurement period, a channel occupancy threshold, an RSSI threshold, and an LBT success rate threshold.

In a possible implementation manner, the configuration information includes a channel occupancy threshold. The determining module 61 is specifically configured to determine that the channel is in a busy state if the occupancy rate of the channel is greater than or equal to the occupancy rate threshold value of the channel; or if the occupancy rate of the channel is less than the threshold value of the occupancy rate of the channel, determining that the channel is in a non-busy state.

In a possible implementation manner, the configuration information further includes a channel measurement period. The determining module 61 is specifically configured to determine that the channel is in a busy state if the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the occupancy rate threshold value of the channel; or, if the occupancy rate of the channel measured in the channel measurement period is less than the threshold value of the occupancy rate of the channel, determining that the channel is in a non-busy state.

In a possible implementation manner, the configuration information includes an RSSI threshold value. The determining module 61 is specifically configured to determine that the channel is in a busy state if the RSSI of the channel is greater than or equal to the RSSI threshold value; or if the RSSI of the channel is smaller than the RSSI threshold value, determining that the channel is in a non-busy state.

In a possible implementation manner, the configuration information further includes a channel measurement period. The determining module 61 is specifically configured to determine that the channel is in a busy state if the RSSI of the channel measured in the channel measurement period is greater than or equal to the RSSI threshold value; or, if the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold value, the channel is determined to be in a non-busy state.

In a possible implementation manner, the configuration information includes an LBT success rate threshold. The determining module 61 is specifically configured to determine that the channel is in a busy state if the success rate of the performed LBT is smaller than the LBT success rate threshold; or, if the success rate of the performed LBT is greater than or equal to the LBT success rate threshold, determining that the channel is in a non-busy state.

In a possible implementation manner, the processing module 62 is specifically configured to perform LBT on the channel by using a CAPC value of the first LCH if the channel is in a busy state; the first LCH is the LCH with the largest CAPC value in the first LCH set, and the COT is specifically used for transmitting data of the LCH in the first LCH set; or if the channel is in a non-busy state, performing LBT on the channel by adopting the CAPC value of the second LCH; the second LCH is the LCH with the largest CAPC value in the second LCH set, and the COT is specifically used for transmitting data of the LCH in the second LCH set. The second LCH set comprises a first LCH set and a third LCH set, and the priority of the LCH with the lowest priority in the first LCH set is not lower than the priority of any LCH in the third LCH set.

In a possible implementation manner, the first LCH set includes LCHs carried by SRBs, and the third LCH set includes LCHs carried by DRBs.

The device provided by the embodiment of the present invention can implement each process implemented by the UE or the network device in the above method embodiments, and for avoiding repetition, detailed descriptions are not repeated here.

Fig. 8 shows a hardware schematic diagram of a UE according to an embodiment of the present invention. As shown in fig. 8, the UE 110 includes but is not limited to: a radio frequency unit 111, a network module 112, an audio output unit 113, an input unit 114, a sensor 115, a display unit 116, a user input unit 117, an interface unit 118, a memory 119, a processor 120, and a power supply 121.

It should be noted that, as those skilled in the art can understand, the UE structure shown in fig. 8 does not constitute a limitation of the UE, and the UE may include more or less components than those shown in fig. 8, or combine some components, or arrange different components. For example, in the embodiment of the present invention, the UE includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, the processor 120 is configured to determine a busy level of the channel; LBT is carried out on the channel by adopting the CAPC value corresponding to the busy degree to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value.

The embodiment of the invention provides the UE, because the UE can determine the busy degree of a channel firstly, determine a CAPC value according to the busy degree of the channel, and then adopt the CAPC value to carry out LBT, namely determine whether to transmit the data of the LCH with high priority or the data of the LCH with all priorities according to the busy degree of the channel, rather than directly transmit the data of the LCH with high priority, the probability that the data of the LCH with low priority cannot be transmitted in time can be reduced, and the time delay of the data of the LCH with low priority can be reduced.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 111 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 120; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 111 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 111 may also communicate with a network and other devices through a wireless communication system.

The UE provides the user with wireless broadband internet access through the network module 112, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 113 may convert audio data received by the radio frequency unit 111 or the network module 112 or stored in the memory 119 into an audio signal and output as sound. Also, the audio output unit 113 may also provide audio output related to a specific function performed by the UE 110 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 113 includes a speaker, a buzzer, a receiver, and the like.

The input unit 114 is used to receive an audio or video signal. The input unit 114 may include a Graphics Processing Unit (GPU) 1141 and a microphone 1142, and the graphics processor 1141 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 116. The image frames processed by the graphic processor 1141 may be stored in the memory 119 (or other storage medium) or transmitted via the radio frequency unit 111 or the network module 112. The microphone 1142 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 111 in case of the phone call mode.

The UE 110 also includes at least one sensor 115, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 1161 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 1161 and/or the backlight when the UE 110 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the UE attitude (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 115 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 116 is used to display information input by the user or information provided to the user. The display unit 116 may include a display panel 1161, and the display panel 1161 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 117 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the UE. Specifically, the user input unit 117 includes a touch panel 1171 and other input devices 1172. Touch panel 1171, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., user operations on or near touch panel 1171 using a finger, stylus, or any suitable object or accessory). Touch panel 1171 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 120, receives a command from the processor 120, and executes the command. In addition, the touch panel 1171 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1171, the user input unit 117 may also include other input devices 1172. Specifically, the other input devices 1172 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein.

Further, touch panel 1171 can be overlaid on display panel 1161, and when touch panel 1171 detects a touch operation thereon or nearby, the touch operation can be transmitted to processor 120 to determine the type of touch event, and then processor 120 can provide a corresponding visual output on display panel 1161 according to the type of touch event. Although in fig. 8, the touch panel 1171 and the display panel 1161 are two independent components to implement the input and output functions of the UE, in some embodiments, the touch panel 1171 and the display panel 1161 may be integrated to implement the input and output functions of the UE, and the implementation is not limited herein.

The interface unit 118 is an interface for connecting an external device to the UE 110. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 118 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the UE 110 or may be used to transmit data between the UE 110 and external devices.

The memory 119 may be used to store software programs as well as various data. The memory 119 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 119 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 120 is a control center of the UE, connects various parts of the entire UE using various interfaces and lines, performs various functions of the UE and processes data by operating or executing software programs and/or modules stored in the memory 119, and calling data stored in the memory 119, thereby performing overall monitoring of the UE. Processor 120 may include one or more processing units; optionally, the processor 120 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 120.

UE 110 may further include a power supply 121 (e.g., a battery) for supplying power to various components, and optionally, power supply 121 may be logically connected to processor 120 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.

In addition, the UE 110 includes some functional modules that are not shown, and are not described herein again.

Optionally, an embodiment of the present invention further provides a UE, including a processor 120 as shown in fig. 8, a memory 119, and a computer program stored in the memory 119 and capable of running on the processor 120, where the computer program is executed by the processor 120 to implement the processes of the foregoing method embodiments, and can achieve the same technical effects, and details are not repeated here to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 120 shown in fig. 8, the computer program implements the processes of the method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be, for example, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Fig. 9 shows a hardware schematic diagram of a network device according to an embodiment of the present invention. As shown in fig. 9, the network device 130 includes: a processor 131, a transceiver 132, a memory 133, a user interface 134, and a bus interface 135.

The processor 131 is configured to determine a busy level of a channel; LBT is carried out on the channel by adopting the CAPC value corresponding to the busy degree to obtain COT; wherein, the COT is used for transmitting LCH data corresponding to the CAPC value.

The embodiment of the invention provides network equipment, which can determine the busy degree of a channel, determine a CAPC value according to the busy degree of the channel, and then perform LBT by using the CAPC value, namely determine whether to transmit data of a high-priority LCH or data of all priority LCHs according to the busy degree of the channel, rather than directly transmit the data of the high-priority LCH, so that the probability that the data of the low-priority LCH cannot be transmitted in time can be reduced, and the time delay of the data of the low-priority LCH is reduced.

Among other things, the processor 131 may be responsible for managing the bus architecture and general processing, and the processor 131 may be used to read and execute programs in the memory 133 to implement processing functions and control of the network device 130. The memory 133 may store data used by the processor 131 in performing operations. The processor 131 and the memory 133 may be integrated or may be provided separately.

In this embodiment of the present invention, the network device 130 may further include: a computer program stored on the memory 133 and executable on the processor 131, which computer program, when executed by the processor 131, performs the steps of the method provided by the embodiments of the present invention.

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 131 and various circuits of memory represented by memory 133 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further in connection with embodiments of the present invention. The bus interface 135 provides an interface. The transceiver 132 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different UEs, the user interface 134 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 131 shown in fig. 9, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the computer program is not described herein again. The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for performing listen before talk, LBT, for a user equipment or a network device, the method comprising:

determining the busy degree of a channel;

adopting a channel access priority class CAPC value corresponding to the busy degree to carry out LBT on the channel so as to obtain channel occupation time COT;

and the COT is used for transmitting data of a logical channel LCH corresponding to the CAPC value.

2. The method of claim 1, wherein prior to determining how busy the channel is, the method further comprises:

acquiring configuration information, wherein the configuration information is used for determining the busy degree of the channel;

the determining the busy degree of the channel comprises the following steps:

and determining the busy degree of the channel according to the configuration information.

3. The method of claim 2, wherein the configuration information comprises at least one of: a channel measurement period, a channel occupancy threshold, a Received Signal Strength Indication (RSSI) threshold, and an LBT success rate threshold.

4. The method of claim 3, wherein the configuration information comprises an occupancy threshold;

the determining the busy degree of the channel according to the configuration information includes:

if the occupancy rate of the channel is greater than or equal to the occupancy rate threshold value of the channel, determining that the channel is in a busy state;

alternatively, the first and second electrodes may be,

and if the occupancy rate of the channel is less than the occupancy rate threshold value of the channel, determining that the channel is in a non-busy state.

5. The method of claim 4, wherein the configuration information further comprises a channel measurement period;

if the occupancy rate of the channel is greater than or equal to the occupancy rate threshold value of the channel, determining that the channel is in a busy state, including:

if the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the occupancy rate threshold value of the channel, determining that the channel is in a busy state;

if the occupancy rate of the channel is less than the occupancy rate threshold value of the channel, determining that the channel is in a non-busy state, including:

and if the occupancy rate of the channel measured in the channel measurement period is smaller than the occupancy rate threshold value of the channel, determining that the channel is in a non-busy state.

6. The method of claim 3, wherein the configuration information comprises an RSSI threshold value;

if the RSSI of the channel is greater than or equal to the RSSI threshold value, determining that the channel is in a busy state;

alternatively, the first and second electrodes may be,

and if the RSSI of the channel is smaller than the RSSI threshold value, determining that the channel is in a non-busy state.

7. The method of claim 6, wherein the configuration information further comprises a channel measurement period;

if the RSSI of the channel is greater than or equal to the RSSI threshold value, determining that the channel is in a busy state, including:

if the RSSI of the channel measured in the channel measuring period is greater than or equal to the RSSI threshold value, determining that the channel is in a busy state;

if the RSSI of the channel is less than the RSSI threshold value, determining that the channel is in a non-busy state, including:

and if the RSSI of the channel measured in the channel measuring period is smaller than the RSSI threshold value, determining that the channel is in a non-busy state.

8. The method of claim 3, wherein the configuration information comprises an LBT success rate threshold;

if the success rate of the LBT is smaller than the LBT success rate threshold value, determining that the channel is in a busy state;

alternatively, the first and second electrodes may be,

and if the success rate of the LBT is greater than or equal to the LBT success rate threshold value, determining that the channel is in a non-busy state.

9. The method according to any of claims 1 to 8, wherein said LBT of said channel with a CAPC value corresponding to said busy level comprises:

if the channel is in a busy state, carrying out LBT on the channel by adopting a CAPC value of a first LCH; the first LCH is the LCH with the largest CAPC value in a first LCH set, and the COT is specifically used for transmitting data of the LCH in the first LCH set;

alternatively, the first and second electrodes may be,

if the channel is in a non-busy state, LBT is carried out on the channel by adopting a CAPC value of a second LCH; the second LCH is the LCH with the largest CAPC value in a second LCH set, and the COT is specifically used for transmitting data of the LCH in the second LCH set;

the second LCH set comprises the first LCH set and a third LCH set, and the priority of the LCH with the lowest priority in the first LCH set is not lower than the priority of any LCH in the third LCH set.

10. The method of claim 9, wherein the first set of LCHs comprises LCHs carried by a Signaling Radio Bearer (SRB), and wherein the third set of LCHs comprises LCHs carried by a Data Radio Bearer (DRB).

11. An apparatus, the apparatus being a user equipment or a network device, the apparatus comprising: a determining module and a processing module;

the determining module is used for determining the busy degree of the channel;

the processing module is configured to perform listen before talk LBT on the channel by using a channel access priority class CAPC value corresponding to the busy level determined by the determining module to obtain a channel occupation time COT;

12. The apparatus of claim 11, further comprising: an acquisition module;

the acquiring module is configured to acquire configuration information before the determining module determines the busy degree of the channel, where the configuration information is used to determine the busy degree of the channel;

the determining module is specifically configured to determine a busy level of the channel according to the configuration information acquired by the acquiring module.

13. The apparatus of claim 12, wherein the configuration information comprises at least one of: a channel measurement period, a channel occupancy threshold, a Received Signal Strength Indication (RSSI) threshold, and an LBT success rate threshold.

14. The apparatus of claim 13, wherein the configuration information comprises an occupancy threshold;

the determining module is specifically configured to determine that the channel is in a busy state if the occupancy rate of the channel is greater than or equal to the occupancy rate threshold value of the channel; or if the occupancy rate of the channel is less than the occupancy rate threshold value of the channel, determining that the channel is in a non-busy state.

15. The apparatus of claim 14, wherein the configuration information further comprises a channel measurement period;

the determining module is specifically configured to determine that the channel is in a busy state if the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the occupancy rate threshold value of the channel; or, if the occupancy rate of the channel measured in the channel measurement period is less than the occupancy rate threshold value of the channel, determining that the channel is in a non-busy state.

16. The device of claim 13, wherein the configuration information comprises an RSSI threshold value;

the determining module is specifically configured to determine that the channel is in a busy state if the RSSI of the channel is greater than or equal to the RSSI threshold value; or if the RSSI of the channel is smaller than the RSSI threshold value, determining that the channel is in a non-busy state.

17. The apparatus of claim 16, wherein the configuration information further comprises a channel measurement period;

the determining module is specifically configured to determine that the channel is in a busy state if the RSSI of the channel measured in the channel measurement period is greater than or equal to the RSSI threshold value; or, if the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold value, determining that the channel is in a non-busy state.

18. The apparatus of claim 13, wherein the configuration information comprises an LBT success rate threshold;

the determining module is specifically configured to determine that the channel is in a busy state if the success rate of the performed LBT is less than the LBT success rate threshold; or, if the success rate of the performed LBT is greater than or equal to the LBT success rate threshold, determining that the channel is in a non-busy state.

19. The device according to any one of claims 11 to 18, wherein the processing module is specifically configured to perform LBT on the channel using a CAPC value of a first LCH if the channel is busy; the first LCH is the LCH with the largest CAPC value in a first LCH set, and the COT is specifically used for transmitting data of the LCH in the first LCH set; or if the channel is in a non-busy state, performing LBT on the channel by adopting a CAPC value of a second LCH; the second LCH is the LCH with the largest CAPC value in a second LCH set, and the COT is specifically used for transmitting data of the LCH in the second LCH set;

20. The apparatus of claim 19, wherein the first set of LCHs comprises LCHs carried by a Signaling Radio Bearer (SRB), and wherein the third set of LCHs comprises LCHs carried by a Data Radio Bearer (DRB).

21. An apparatus comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of a method of performing listen before talk, LBT, as claimed in any one of claims 1 to 10.

22. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of listening-before-speaking, LBT, according to any one of claims 1 to 10.