WO2021088965A1 - Method for carrying out lbt and device - Google Patents

Abstract

Disclosed in the embodiments of the present invention are a method for carrying out LBT and a device, the method comprising: determining the busyness of a channel; and using a CAPC value corresponding to the busyness to perform LBT on the channel so as to obtain a COT, the COT being used for transmitting LCH data corresponding to the CAPC value.

Description

Method and equipment for LBT

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 201911078529.4 filed in China on November 6, 2019, and the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for performing LBT.

Background technique

Generally, when data on different logical channels (logical channels, LCH) (such as signaling radio bearers (SRB) data and data radio bearers (DRB) data) are transmitted, user equipment (user equipment) , UE) can use different channel access priority class (channel access priority class, CAPC) values to listen before talk (LBT) to obtain different types of channel occupancy time (channel occupancy time, COT) .

At present, in order to ensure the transmission of high-priority LCH data, the UE will preferentially select certain lower CAPC values (the smaller the CAPC value, the higher the priority of the LCH) for LBT to obtain a COT, and transmit it on the COT These LCH data with lower CAPC value, so as to realize the transmission of the high-priority LCH data. In this way, the data of the low-priority LCH may not be transmitted on the COT, resulting in that the data of the low-priority LCH cannot be transmitted in time, that is, the data of the low-priority LCH has a larger delay.

Summary of the invention

The embodiment of the present invention provides a method and device for performing LBT, which can solve the problem of large delay of low-priority LCH data.

In order to solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

The first aspect of the embodiments of the present invention provides a method for performing LBT, which is applied to user equipment or network equipment. The method for performing LBT includes: determining the busyness of the channel; Perform LBT to obtain COT; wherein, the COT is used to transmit the data of the LCH corresponding to the CAPC value.

In a second aspect of the embodiments of the present invention, a device is provided. The device is a user equipment or a network device. The device includes a determining module and a processing module. Among them, the determining module is used to determine the busyness of the channel. The processing module is configured to use the CAPC value corresponding to the busyness determined by the determining module to perform LBT on the channel to obtain the COT; wherein the COT is used to transmit the data of the LCH corresponding to the CAPC value.

In a third aspect of the embodiments of the present invention, a device is provided. The device includes a processor, a memory, and a computer program that is stored in the memory and can run on the processor. When the computer program is executed by the processor, the first aspect is The steps of the method for performing LBT.

In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method for performing LBT as described in the first aspect is implemented. step.

In the embodiment of the present invention, the UE or the network device may use the CAPC value corresponding to the busyness of the channel to perform LBT on the channel to obtain the COT (the COT is used to transmit the data of the LCH corresponding to the CAPC value). Because the UE or network equipment can determine the busyness of the channel first, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value for LBT, that is, determine whether to transmit the high-priority LCH data or all according to the busyness of the channel Priority LCH data is not directly transmitted for high priority LCH data, so it can reduce the probability that low priority LCH data cannot be transmitted in time, thereby reducing the delay of low priority LCH data .

Description of the drawings

FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present invention;

FIG. 2 is one of the schematic diagrams 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;

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;

Figure 6 is one of the schematic structural diagrams of a device provided by an embodiment of the present invention;

FIG. 7 is the second structural diagram of a device provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of hardware of a UE provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of hardware of a network device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The terms "first" and "second" in the description and claims of the embodiments of the present invention are used to distinguish different objects, rather than to describe a specific order of objects. For example, the first LCH set and the second LCH set are used to distinguish different LCH sets, rather than to describe the specific order of the LCH sets.

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

The term "and/or" in this article refers to an association relationship that describes associated objects, which means that there can be three relationships, for example, a display panel and/or backlight, which can mean that there is a display panel alone, and a display panel and a backlight exist at the same time. There are three cases of backlight alone. The symbol "/" in this document indicates the relationship that the associated object is or, for example, input/output indicates input or output.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiment of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The following explains some concepts and/or terms involved in the LBT method and device provided in the embodiments of the present invention.

Currently, SRB data and DRB data may be configured with different CAPC values. When the UE has SRB data and DRB data at the same time, choosing to perform LBT according to the CAPC value corresponding to SRB data or DRB data will initiate different types of COT, and low-priority data cannot use the COT initiated by the CAPC according to SRB data for data. Transmission; COT initiated according to the CAPC value corresponding to the LCH of the low-priority DRB data can be used to send SRB data, but it will increase the probability of LBT failure, that is, the probability of initiating COT failure increases, resulting in the failure of SRB data to be sent.

Different LCH data can be multiplexed with the same COT for transmission. In order to use the same COT for transmission of different LCH data, the CAPC value of the LCH with the largest CAPC value (that is, the lowest LBT priority) is used for LBT, so the initiated COT It can be used to send all LCH data. The LCH with a low CAPC value can use the COT initiated by the LBT with a higher CAPC value for data transmission, but not vice versa. Therefore, when there are multiple LCH data to be transmitted, the COT obtained by the UE selecting the CAPC value according to this method can be used for the data transmission of all these LCHs, so as to reduce the low data rate of some LCHs with high CAPC values. Probability. Generally, the CAPC value configured by the network device for the high-priority LCH is small (that is, the corresponding LBT has a higher probability of competing for the channel), and the CAPC value configured for the low-priority LCH is larger (that is, the corresponding LBT is competing for the channel The probability is low).

When sending with a configured grant, the UE can determine the CAPC value according to the sent service data to perform LBT, and the initiated COT is used to send the service data.

The embodiment of the present invention provides a method and device for performing LBT. The UE or network device can first determine the busyness of the channel, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value to perform LBT, that is, according to the channel's busyness. The degree of busyness determines whether to transmit high-priority LCH data or all priority LCH data, instead of directly transmitting high-priority LCH data, so it can reduce the probability that low-priority LCH data cannot be transmitted in time. Thereby reducing the data delay of the low-priority LCH.

The method and device for performing LBT provided by the embodiment of the present invention can be applied to a communication system. Specifically, it can be applied to the process of performing LBT based on the communication system by the UE or network equipment according to the busyness of the channel.

FIG. 1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present invention. As shown in Figure 1, the communication system may include UE 01 and network equipment 02. Among them, a connection and communication can be established between the UE 01 and the network device 02.

A UE is a device that provides voice and/or data connectivity to users, a handheld device with wired/wireless connection functions, or other processing devices connected to a wireless modem. The UE may communicate with one or more core network devices through a radio access network (RAN). The UE can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal. It can also be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device, which exchanges languages with the RAN And/or data, for example, personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants) , PDA) and other equipment. The UE may also be called a user agent or terminal device.

The network device may be a base station (for example, a primary base station or a secondary base station). A base station is a device deployed in the RAN to provide wireless communication functions for the UE. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, and so on. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in third-generation mobile communication (3G) networks, they are called base stations (NodeB); in LTE systems , Called evolved NodeB (eNB or eNodeB); in the fifth generation mobile communication (5G) network, called gNB and so on. With the evolution of communication technology, the name "base station" may change. It is worth noting that, the embodiment of the present invention only uses the 5G network as an exemplary description, but it should not be used as a scenario limitation of the embodiment of the present invention.

The method and device for performing LBT provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

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 the following steps 201 and 202.

Step 201: The UE determines how busy the channel is.

In the embodiment of the present invention, the above-mentioned busyness can be understood as the channel being in a busy state or in a non-busy state (for example, an idle state).

In the embodiment of the present invention, when the UE contains data of different LCHs to be transmitted, the UE can determine the busyness of the channel to determine whether the channel can transmit the data of these different LCHs.

Optionally, in the embodiment of the present invention, the above-mentioned different LCH data may include SRB data and DRB data.

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

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

Step 301: The network device sends configuration information to the UE.

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

In the embodiment of the present invention, the above-mentioned configuration information is used to determine the busyness of the channel.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may include at least one of the following: channel measurement period, channel occupancy rate threshold, received signal strength indicator (RSSI) threshold, and LBT success Rate threshold.

Optionally, in the embodiment of the present invention, the above-mentioned channel occupancy rate threshold (ie, the channel occupancy ratio threshold) is: the number of symbols in the occupied state (for example, received power> preset threshold) during channel detection The threshold value in proportion to the number of all symbols during channel detection.

Optionally, in this embodiment of the present invention, the network device may send indication information to the network device to instruct the UE to determine how busy the channel is.

Step 201a: The UE determines the busyness of the channel according to the configuration information.

Optionally, in a possible implementation manner of the embodiment of the present invention, the foregoing configuration information includes a channel occupancy rate threshold. The above step 201a can be specifically implemented by the following step 201a1 or step 201a2.

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

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

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

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 201a1 can be specifically implemented by the following step 201a11.

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

In the embodiment of the present invention, the UE can determine whether the channel is busy according to the channel measurement period and the channel occupancy threshold configured by the network device.

Step 201a2, if the channel occupancy rate is less than the channel occupancy rate threshold, the UE determines that the channel is not busy.

In the embodiment of the present invention, the UE can perform channel measurement and processing (for example, statistics), and when the measured channel occupancy rate is less than the channel occupancy rate threshold, determine that the channel is not busy.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 201a2 can be specifically implemented by the following step 201a21.

Step 201a21: If the occupancy rate of the channel measured in the channel measurement period is less than the channel occupancy rate threshold, the UE determines that the channel is not busy.

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 the basis for judging whether the channel is busy; that is, if the occupancy rate of the channel measured outside the channel measurement period is greater than or If equal to the channel occupancy threshold, the UE determines that the channel is in a busy state. If the channel occupancy measured outside the channel measurement period is less than the channel occupancy threshold, the UE determines that the channel is not busy.

Optionally, in another possible implementation manner of the embodiment of the present invention, the foregoing configuration information includes an RSSI threshold. The above step 201a can be specifically implemented by the following step 201a3 or step 201a4.

Step 201a3: If the RSSI of the channel is greater than or equal to the RSSI threshold, the UE determines that the channel is in a busy state.

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

Optionally, in the embodiment of the present invention, when the UE has high-priority LCH data and low-priority LCH data to be transmitted, the UE may perform channel measurement and processing to obtain the RSSI of the channel, Then the RSSI is compared with the RSSI threshold to determine whether the channel is busy.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 201a3 can be specifically implemented by the following step 201a31.

Step 201a31: If the RSSI of the channel measured in the channel measurement period is greater than or equal to the RSSI threshold, the UE determines that the channel is in a busy state.

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

Step 201a4: If the RSSI of the channel is less than the RSSI threshold, the UE determines that the channel is not busy.

In the embodiment of the present invention, the UE can perform channel measurement and processing (for example, statistics), and when the RSSI of the measured channel is less than the RSSI threshold, it is determined that the channel is not busy.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 201a4 can be specifically implemented by the following step 201a41.

Step 201a41: If the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold, the UE determines that the channel is not busy.

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 the basis for judging 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 If the RSSI of the channel measured outside the channel measurement period is less than the RSSI threshold, the UE determines that the channel is in a busy state, and 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 foregoing configuration information includes an LBT success rate threshold. The above step 201a can be specifically implemented by the following step 201a5 or step 201a6.

Step 201a5: If the success rate of the performed LBT is less than the LBT success rate threshold, the UE determines that the channel is in a busy state.

Optionally, in the embodiment of the present invention, when the UE has high-priority LCH data and low-priority LCH data to be transmitted, the UE may compare the success rate of the LBT that has been performed with the LBT success rate threshold. Values are compared to determine whether the channel is busy.

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

Optionally, in the embodiment of the present invention, the success rate of the performed LBT can be understood as: the percentage of successes of all LBT performed by the UE in a period of time (such as 100 ms), or the first N performed by the UE (N is positive). Integer) The percentage of LBT successes. When N=1, that is, the UE determines whether the channel is in a busy state according to whether the previous LBT is successful.

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 not busy.

Step 202: The UE uses the CAPC value corresponding to the busyness to perform LBT on the channel to obtain the COT.

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

It can be understood that, depending on the busyness of the channel, the CAPC value adopted by the UE when performing LBT is different, so that the data of the LCH transmitted 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 high-priority LCH data, that is, the CAPC value of the high-priority LCH may be used to perform LBT on the channel to obtain COT, The COT is used to transmit the data of the LCH corresponding to the CAPC value (that is, the data of the high-priority LCH).

Optionally, in the embodiment of the present invention, if the UE determines that the channel is not busy, the UE may determine to transmit high-priority LCH data and low-priority LCH data, that is, the CAPC value of the low-priority LCH may be used LBT is performed on the channel to obtain the COT, which is used to transmit the data of the LCH corresponding to the CAPC value (that is, the data of the high-priority LCH and the data of the low-priority LCH).

In the embodiment of the present invention, the UE can determine whether the channel is busy according to the configuration information sent by the network device, and when the channel is busy, initiate a COT for all LCHs in the high-priority LCH set to transmit For high-priority LCH data, when the channel is not busy, a COT is initiated for all LCHs in the high-priority LCH set and all LCHs in the low-priority LCH set to transmit high-priority LCH data. LCH data and low priority LCH data.

Optionally, in the embodiment of the present invention, in conjunction with FIG. 2, as shown in FIG. 4, the above-mentioned step 202 may be specifically implemented by the following step 202a or step 202b.

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 busy, the UE uses the CAPC value of the first LCH to perform LBT on the channel to obtain COT.

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

In the embodiment of the present invention, when the channel is busy, the UE can initiate a COT for the high-priority LCH (or the high-priority LCH set), that is, the UE can use the CAPC value in the high-priority LCH set The CAPC value of the largest LCH determines the LBT parameters and performs LBT, and after successful channel competition, the data of the LCH in the high-priority LCH set is sent on the COT.

Step 202b: If the channel is not busy, the UE uses the CAPC value of the second LCH to perform LBT on the channel to obtain the COT.

In the embodiment of the present invention, the foregoing second LCH is the LCH with the largest CAPC value in the second LCH set, and the COT is specifically used to transmit data of the LCH in the second LCH set. The second LCH set includes the first LCH set and the third LCH set, and the priority of the lowest priority LCH in the first LCH set is not lower than (that is, higher than or equal to) the priority of any LCH in the third LCH.

It can be understood that the above-mentioned second LCH set includes a high-priority LCH set (ie, the first LCH set) and a low-priority LCH set (ie, the third LCH set), and all LCHs in the high-priority LCH set have priority. The level is not lower than the priority of all LCHs in the low-priority LCH set.

In the embodiment of the present invention, when the channel is not busy, the UE can initiate a high-priority LCH (or a high-priority LCH set) and a low-priority LCH (or a low-priority LCH set). COT, that is, the UE can use the CAPC value of the LCH with the largest CAPC value among these LCHs to determine the LBT parameters and perform LBT, and after successfully competing for the channel, send the data of all LCHs on the COT (that is, the data of the high priority LCH set) All LCH data and all LCH data in the low priority LCH set).

Optionally, in the embodiment of the present invention, the above-mentioned first LCH set may include the LCH carried by the SRB, and the above-mentioned third LCH set may include the LCH carried by the DRB.

Optionally, in this embodiment of the present invention, the foregoing third LCH set may also include other LCHs other than 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), they each correspond to a CAPC value set, where the LCH in the high-priority LCH set corresponds to The CAPC value of LCH is lower, and the CAPC value corresponding to the LCH in the low-priority LCH set is higher. In the same LCH set, the CAPC values corresponding to different LCHs are close; when the channel is busy, the UE can follow the high The largest CAPC value among all LCHs in the priority LCH set is LBT to initiate a COT for data transmission of the LCH in the high priority LCH set; when the channel is not busy, the UE can combine the two LCH sets (that is, the UE does not distinguish between high-priority LCH sets and low-priority LCH sets), and determines to perform LBT according to the largest CAPC value to initiate a COT for data transmission of all LCHs.

The embodiment of the present invention provides a method for performing LBT. According to the busyness of the channel, the UE can use the CAPC value corresponding to the busyness to LBT the channel to obtain the COT (the COT is used to transmit the data of the LCH corresponding to the CAPC value). ). Because the UE can determine the busyness of the channel first, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value for LBT, that is, according to the busyness of the channel to determine whether to transmit high-priority LCH data or all priorities The LCH data is not directly transmitted for the high-priority LCH data, so the probability that the low-priority LCH data cannot be transmitted in time can be reduced, thereby reducing the delay of the low-priority LCH data.

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 the following steps 401 and 402.

Step 401: The network device determines how busy the channel is.

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

Step 501: The network device obtains configuration information.

In the embodiment of the present invention, the above-mentioned configuration information is used to determine the busyness of the channel.

Step 401a: The network device determines the busyness of the channel according to the configuration information.

Optionally, in a possible implementation manner of the embodiment of the present invention, the foregoing configuration information includes a channel occupancy rate threshold. The above step 401a can be specifically implemented by the following step 401a1 or step 401a2.

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

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 401a1 can be specifically implemented by the following step 401a11.

Step 401a11: If the occupancy rate of the channel measured in the channel measurement period is greater than or equal to the channel occupancy rate threshold, 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 channel occupancy rate threshold, the network device determines that the channel is not busy.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 401a2 can be specifically implemented by the following step 401a21.

Step 401a21: If the occupancy rate of the channel measured in the channel measurement period is less than the channel occupancy rate threshold, the network device determines that the channel is not busy.

Optionally, in another possible implementation manner of the embodiment of the present invention, the foregoing configuration information includes an RSSI threshold. The above step 401a can be specifically implemented by the following step 401a3 or step 401a4.

Step 401a3: If the RSSI of the channel is greater than or equal to the RSSI threshold, the network device determines that the channel is in a busy state.

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 401a3 can be specifically implemented by the following step 401a31.

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

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

Optionally, in the embodiment of the present invention, the above-mentioned configuration information may further include a channel measurement period. The above step 401a4 can be specifically implemented by the following step 401a41.

Step 401a41: If the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold, the network device determines that the channel is not busy.

Optionally, in another possible implementation manner of the embodiment of the present invention, the foregoing configuration information includes an LBT success rate threshold. The above step 401a can be specifically implemented by the following step 401a5 or step 401a6.

Step 401a5: If the success rate of the performed LBT is less than the LBT success rate threshold, the network device determines that the channel is in a busy state.

Step 401a6: If the success rate of the performed 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 uses the CAPC value corresponding to the busy level to perform LBT on the channel to obtain the COT.

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

Step 402a: If the channel is in a busy state, the network device uses the CAPC value of the first LCH to perform LBT on the channel to obtain the channel occupation time COT.

Step 402b: If the channel is not busy, the network device uses the CAPC value of the second LCH to perform LBT on the channel to obtain the channel occupation time COT.

In the embodiment of the present invention, when the network device has multiple LCHs corresponding to different CAPCs and data needs to be sent, the network device may execute the LBT method provided in the embodiment of the present invention. In addition, all execution processes are internal processes of the network equipment and depend on the implementation of the network equipment.

It should be noted that, for the 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, which will not be repeated here.

The embodiment of the present invention provides a method for performing LBT. The network device can first determine the busyness of the channel, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value to perform LBT, that is, determine the transmission according to the busyness of the channel The high-priority LCH data is still all the priority LCH data, instead of directly transmitting the high-priority LCH data, so it can reduce the probability that the low-priority LCH data cannot be transmitted in time, thereby reducing the low priority. The time delay of the priority LCH data.

FIG. 6 shows a schematic diagram of a possible structure of a device involved in an embodiment of the present invention. The device may be a UE or a network device. As shown in FIG. 6, the device 60 provided in this embodiment of the present invention may include: a determining module 61 and a processing module 62.

Among them, the determining module 61 is used to determine the busyness of the channel. The processing module 62 is configured to use the CAPC value corresponding to the busyness determined by the determining module 61 to perform LBT on the channel to obtain the COT; wherein the COT is used to transmit the data of the LCH corresponding to the CAPC value.

In a possible implementation manner, with reference to FIG. 6, as shown in FIG. 7, the device 60 provided in this embodiment of the present invention further includes: an acquisition module 63. The acquiring module 63 is configured to acquire configuration information before the determining module 61 determines the busyness of the channel, and the configuration information is used to determine the busyness of the channel. The above determining module 61 is specifically configured to determine the busyness of the channel according to the configuration information acquired by the acquiring module 63.

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

In a possible implementation manner, the foregoing configuration information includes a channel occupancy rate threshold. The above determining module 61 is specifically configured to determine that the channel is busy if the channel occupancy rate is greater than or equal to the channel occupancy rate threshold; or, if the channel occupancy rate is less than the channel occupancy rate threshold, determine that the channel is not Busy state.

In a possible implementation manner, the foregoing configuration information further includes a channel measurement period. The above 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 channel occupancy rate threshold; or, if the channel occupancy measured in the channel measurement period If the rate is less than the channel occupancy rate threshold, it is determined that the channel is not busy.

In a possible implementation manner, the foregoing configuration information includes an RSSI threshold. The above determination 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; or, if the RSSI of the channel is less than the RSSI threshold, determine that the channel is in an unbusy state.

In a possible implementation manner, the foregoing configuration information further includes a channel measurement period. The above 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; or, if the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold Limit, the channel is determined to be in a non-busy state.

In a possible implementation manner, the above configuration information includes the LBT success rate threshold. The above 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 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 , It is determined that the channel is not busy.

In a possible implementation manner, the aforementioned processing module 62 is specifically configured to use the CAPC value of the first LCH to perform LBT on the channel if the channel is busy; the first LCH is the one with the largest CAPC value in the first LCH set LCH, COT are specifically used to transmit data of LCH in the first LCH set; or, if the channel is not busy, the CAPC value of the second LCH is used to perform LBT on the channel; the second LCH is the CAPC in the second LCH set The COT of the LCH with the largest value is specifically used to transmit the data of the LCH in the second LCH set. The second LCH set includes the first LCH set and the third LCH set, and the priority of the lowest priority LCH in the first LCH set is not lower than the priority of any LCH in the third LCH.

In a possible implementation manner, the above-mentioned first LCH set includes LCH carried by SRB, and the above-mentioned third LCH set includes LCH carried by DRB.

The device provided in the embodiment of the present invention can implement each process implemented by the UE or the network device in the foregoing method embodiment. In order to avoid repetition, the specific description will not be repeated here.

Fig. 8 shows a hardware schematic diagram of a UE provided by an embodiment of the present invention. As shown in Figure 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, The processor 120, and the power supply 121 and other components.

It should be noted that those skilled in the art can understand that the structure of the UE shown in FIG. 8 does not constitute a limitation on the UE, and the UE may include more or less components than those shown in FIG. 8, or some components may be combined. Or different component arrangements. Exemplarily, 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 palmtop computer, a vehicle-mounted terminal, a wearable device, and a pedometer.

The processor 120 is used to determine the busyness of the channel; and uses the CAPC value corresponding to the busyness to perform LBT on the channel to obtain the COT; wherein, the COT is used to transmit the data of the LCH corresponding to the CAPC value.

The embodiment of the present invention provides a UE, because the UE can first determine the busyness of the channel, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value for LBT, that is, determine the high transmission priority according to the busyness of the channel The data of the LCH is still the data of all priority LCHs, instead of directly transmitting the data of the high priority LCH, so it can reduce the probability that the low priority LCH data cannot be transmitted in time, thereby reducing the low priority The time delay of LCH data.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 111 can be used for receiving and sending signals during the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 120; Uplink data is sent to the base station. Generally, the 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 can also communicate with the network and other devices through a wireless communication system.

The UE provides users with wireless broadband Internet access through the network module 112, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 113 may convert the 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 it as sound. Moreover, the audio output unit 113 may also provide audio output related to a specific function performed by the UE 110 (for example, call signal reception sound, 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 audio or video signals. The input unit 114 may include a graphics processing unit (GPU) 1141 and a microphone 1142. The graphics processing unit 1141 is configured to monitor still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The data is processed. The processed image frame can be displayed on the display unit 116. The image frame processed by the graphics processor 1141 may be stored in the memory 119 (or other storage medium) or sent via the radio frequency unit 111 or the network module 112. The microphone 1142 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 111 for output in the case of a telephone call mode.

The UE 110 also includes at least one sensor 115, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1161 according to the brightness of the ambient light. The proximity sensor can close the display panel 1161 and/or when the UE 110 moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify UE posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 115 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.

The display unit 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 inputted numeric or character information, and generate key signal input 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. The touch panel 1171, also called a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 1171 or near the touch panel 1171. operating). The touch panel 1171 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 120, the command sent by the processor 120 is received and executed. In addition, the touch panel 1171 can be implemented in multiple 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, other input devices 1172 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 1171 can be overlaid on the display panel 1161. When the touch panel 1171 detects a touch operation on or near it, it transmits it to the processor 120 to determine the type of the touch event, and then the processor 120 responds to the touch The type of event provides corresponding visual output on the display panel 1161. Although in FIG. 8, the touch panel 1171 and the display panel 1161 are used as 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 can be integrated. Realize the input and output functions of the UE, which are not specifically limited here.

The interface unit 118 is an interface for connecting an external device with the UE 110. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc. The interface unit 118 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the UE 110 or can be used to communicate between the UE 110 and the external device. Transfer data between.

The memory 119 can be used to store software programs and various data. The memory 119 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc. In addition, the memory 119 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 120 is the control center of the UE. It uses various interfaces and lines to connect various parts of the entire UE. It executes by running or executing software programs and/or modules stored in the memory 119 and calling data stored in the memory 119. Various functions and processing data of the UE, so as to monitor the UE as a whole. The processor 120 may include one or more processing units; optionally, the processor 120 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, and application programs, etc. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 120.

The UE 110 may also include a power source 121 (such as a battery) for supplying power to various components. Optionally, the power source 121 may be logically connected to the processor 120 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.

In addition, the UE 110 includes some functional modules that are not shown, which will not be repeated here.

Optionally, an embodiment of the present invention also provides a UE, including a processor 120 as shown in FIG. 8, a memory 119, a computer program stored in the memory 119 and running on the processor 120, the computer program When executed by the processor 120, each process of the foregoing method embodiment is realized, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

The embodiment of the present invention also provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by the processor 120 as shown in FIG. 8, each process of the foregoing method embodiment is implemented, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here. Wherein, the computer-readable storage medium, such as read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

Fig. 9 shows a hardware schematic diagram of a network device provided by 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 used to determine the busyness of the channel; and uses the CAPC value corresponding to the busyness to perform LBT on the channel to obtain the COT; wherein, the COT is used to transmit the data of the LCH corresponding to the CAPC value.

The embodiment of the present invention provides a network device. The network device can first determine the busyness of the channel, and determine a CAPC value according to the busyness of the channel, and then use the CAPC value for LBT, that is, determine the high transmission priority according to the busyness of the channel LCH data is still all priority LCH data, instead of directly transmitting high priority LCH data, so it can reduce the probability that low priority LCH data cannot be transmitted in time, thereby reducing low priority The latency of the LCH data.

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 the network device 130. The memory 133 may store data used by the processor 131 when performing operations. The processor 131 and the memory 133 may be integrated together or separately arranged.

In the embodiment of the present invention, the network device 130 may further include: a computer program stored in the memory 133 and running on the processor 131, and when the computer program is executed by the processor 131, the steps of the method provided in the embodiment of the present invention are implemented.

In FIG. 9, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 131 and various circuits of the memory represented by the memory 133 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are all known in the art. Therefore, the embodiments of the present invention will not further describe them. . The bus interface 135 provides an interface. The transceiver 132 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different UEs, the user interface 134 may also be an interface capable of connecting externally and internally with required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The embodiment of the present invention also provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by the processor 131 as shown in FIG. 9, each process of the foregoing method embodiment is implemented, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here. Wherein, the computer-readable storage medium, such as ROM, RAM, magnetic disk or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present invention.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, all of which fall within the protection of the present invention.

Claims (22)

1. A method of listening first and then speaking LBT, which is applied to user equipment or network equipment, and the method includes:

   Determine how busy the channel is;

   Use the CAPC value of the channel access priority category corresponding to the busy degree to perform LBT on the channel to obtain the channel occupancy time COT;

   Wherein, the COT is used to transmit data of the logical channel LCH corresponding to the CAPC value.
2. The method according to claim 1, wherein before the determining the busyness of the channel, the method further comprises:

   Acquiring configuration information, where the configuration information is used to determine the busyness of the channel;

   The determining the busyness of the channel includes:

   Determine the busyness of the channel according to the configuration information.
3. The method according to claim 2, wherein the configuration information includes at least one of the following: a channel measurement period, a channel occupancy rate threshold, a received signal strength indicator RSSI threshold, and an LBT success rate threshold.
4. The method according to claim 3, wherein the configuration information includes a channel occupancy rate threshold;

   The determining the busyness of the channel according to the configuration information includes:

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

   or,

   If the occupancy rate of the channel is less than the channel occupancy rate threshold, it is determined that the channel is not busy.
5. The method according to claim 4, wherein the configuration information further includes a channel measurement period;

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

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

   If the occupancy rate of the channel is less than the channel occupancy rate threshold, determining that the channel is in a non-busy state includes:

   If the occupancy rate of the channel measured in the channel measurement period is less than the channel occupancy rate threshold, it is determined that the channel is in a non-busy state.
6. The method according to claim 3, wherein the configuration information includes an RSSI threshold;

   The determining the busyness of the channel according to the configuration information includes:

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

   or,

   If the RSSI of the channel is less than the RSSI threshold, it is determined that the channel is in a non-busy state.
7. The method according to claim 6, wherein the configuration information further includes a channel measurement period;

   If the RSSI of the channel is greater than or equal to the RSSI threshold, determining that the channel is in a busy state includes:

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

   If the RSSI of the channel is less than the RSSI threshold, determining that the channel is in a non-busy state includes:

   If the RSSI of the channel measured in the channel measurement period is less than the RSSI threshold, it is determined that the channel is in a non-busy state.
8. The method according to claim 3, wherein the configuration information includes an LBT success rate threshold;

   The determining the busyness of the channel according to the configuration information includes:

   If the success rate of the performed LBT is less than the LBT success rate threshold, it is determined that the channel is in a busy state;

   or,

   If the success rate of the performed LBT is greater than or equal to the LBT success rate threshold, it is determined that the channel is in a non-busy state.
9. The method according to any one of claims 1 to 8, wherein the using the CAPC value corresponding to the busy degree to perform LBT on the channel comprises:

   If the channel is busy, the CAPC value of the first LCH is used to perform LBT on the channel; the first LCH is the LCH with the largest CAPC value in the first LCH set, and the COT is specifically used to transmit the LCH data in the first LCH set;

   or,

   If the channel is not busy, the CAPC value of the second LCH is used to perform LBT on the channel; the second LCH is the LCH with the largest CAPC value in the second LCH set, and the COT is specifically used for transmission The data of the LCH in the second LCH set;

   The second LCH set includes the first LCH set and the third LCH set, and the priority of the lowest priority LCH in the first LCH set is not lower than the priority of any LCH in the third LCH .
10. The method according to claim 9, wherein the first LCH set includes LCHs carried by a signaling radio bearer SRB, and the third LCH set includes LCHs carried by a data radio bearer DRB.
11. A device, the device is a user equipment or a network device, and the device includes: a determination module and a processing module;

    The determining module is used to determine the busyness of the channel;

    The processing module is configured to use the CAPC value of the channel access priority category corresponding to the busyness determined by the determining module to listen first and then LBT on the channel to obtain the channel occupancy time COT;

    Wherein, the COT is used to transmit data of the logical channel LCH corresponding to the CAPC value.
12. The device according to claim 11, wherein the device further comprises: an acquisition module;

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

    The determining module is specifically configured to determine the busyness of the channel according to the configuration information acquired by the acquiring module.
13. The device according to claim 12, wherein the configuration information includes at least one of the following: a channel measurement period, a channel occupancy rate threshold, a received signal strength indicator RSSI threshold, and an LBT success rate threshold.
14. The device according to claim 13, wherein the configuration information includes a channel occupancy rate 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 channel occupancy rate threshold; or, if the channel occupancy rate is less than the channel occupancy rate Rate threshold, it is determined that the channel is not busy.
15. The device according to claim 14, wherein the configuration information further includes 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 channel occupancy rate threshold; or, if the channel is in a busy state; If the occupancy rate of the channel measured in the channel measurement period is less than the channel occupancy rate threshold, it is determined that the channel is in a non-busy state.
16. The device according to claim 13, wherein the configuration information includes an RSSI threshold;

    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; or, if the RSSI of the channel is less than the RSSI threshold, then It is determined that the channel is not busy.
17. The device according to claim 16, wherein the configuration information further includes 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 during the channel measurement period is greater than or equal to the RSSI threshold; or, if the channel is measured in the channel If the RSSI of the channel measured during the period is less than the RSSI threshold, it is determined that the channel is in a non-busy state.
18. The device according to claim 13, wherein the configuration information includes 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 success rate of the LBT The LBT success rate threshold is determined to be the non-busy state of the channel.
19. The device according to any one of claims 11 to 18, wherein the processing module is specifically configured to use the CAPC value of the first LCH to perform LBT on the channel if the channel is busy; The first LCH is the LCH with the largest CAPC value in the first LCH set, and the COT is specifically used to transmit data of the LCH in the first LCH set; or, if the channel is not busy, the second The CAPC value of the LCH, LBT is performed on the channel; the second LCH is the LCH with the largest CAPC value in the second LCH set, and the COT is specifically used to transmit data of the LCH in the second LCH set;

    The second LCH set includes the first LCH set and the third LCH set, and the priority of the lowest priority LCH in the first LCH set is not lower than the priority of any LCH in the third LCH .
20. The device according to claim 19, wherein the first LCH set includes LCHs carried by a signaling radio bearer SRB, and the third LCH set includes LCHs carried by a data radio bearer DRB.
21. A device comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor to implement any one of claims 1 to 10 The steps of the method of listening first and then speaking LBT as described in the item.
22. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the first-listening method according to any one of claims 1 to 10 is realized. The steps of the LBT method will be described later.

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