Uplink LBT method and device, medium and terminal

[0064] As mentioned earlier, NR-based unlicensed spectrum communication technology has become a new technology hotspot. Based on the new features of NR, LBT technology needs to be changed accordingly. However, there is currently no LBT technology based on beam direction in NR scenarios.

[0065] In the NR scenario, data transmission can be performed based on multiple beams, and the beams can be distinguished by the type and sequence number of the RS carrying the beam. Different beams have different beam directions. The beam direction in the embodiment of the present invention may be carried by channel state information reference signal (CSI Reference Signal, CSI-RS), channel sounding signal (Sounding Reference Signal, SRS), tracking reference signal (Tracking Reference Signal, TRS), synchronization signal It is distinguished from the spatial configuration (spatial configuration) of any one or more of the broadcast channel block (SS/PBCH Block, SSB) and the discovery reference signal (Discovery Reference Signal, DRS).

[0066] For example, for the channels PDCCH, PDSCH, PRACH, PUCCH or PUSCH can be associated with any one or more of the above reference signals to indicate that they have the same spatial configuration, and then the transmit or receive beams can be determined direction. In addition, the spatial configuration (spatial configuration) of any resource in the above-mentioned reference signal may also be associated with the spatial configuration (spatial configuration) of another resource in the above-mentioned reference signal, indicating that they have the same spatial configuration (spatial configuration), In turn, the direction of its transmitting or receiving beam can be determined. The channels PDCCH, PDSCH, PRACH, PUCCH, PUSCH, uplink transmission, downlink transmission, and the sending or receiving direction of various reference signals mentioned below can all be determined by their associated CSI-RS resources (or CSI-RS resource sets or CSI -RS), TRS resource (or TRS resource set or TRS), SSB, SRS resource (or SRS resource set or SRS), or DRS (or DRS resource or DRS resource set).

[0067] In the embodiment of the present invention, the beam direction of one or more beams to be monitored is determined, that is, the beam direction to be monitored, so that the beam to be monitored can be determined, and the one or more beams to be monitored can be monitored to determine the appropriate The beam used for data transmission can then complete the uplink LBT in the NR scenario.

[0068] In order to make the above objectives, features and beneficial effects of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0069] figure 1 It is a flowchart of an uplink LBT method in an embodiment of the present invention, which specifically includes the following steps:

[0070] Step S11, determining the beam direction to be monitored of one or more beams to be monitored, the beam to be monitored is selected from beams in an unlicensed spectrum range;

[0071] Step S12: monitor the one or more beams to be monitored to determine a beam suitable for data transmission.

[0072] Among them, the beam to be monitored is an uplink beam, and the beam direction to be monitored is the direction of the beam to be monitored, which is called the beam direction to be monitored for the convenience of description. In specific implementation, the direction of the beam to be monitored may be determined by the terminal, or may also be determined according to an instruction from the base station side, which will be described separately below.

[0073] In a specific implementation, the beam direction to be monitored may be determined according to the beam direction information obtained from the base station side. The beam direction information is the information used by the base station side to inform the terminal of the beam direction of the uplink LBT suitable for performing. After obtaining the beam direction information, the terminal can determine the beam direction to be monitored of one or more beams to be monitored according to the information.

[0074] Specifically, the terminal may determine the number of beams to be monitored in combination with its own monitoring capability to perform monitoring. For example, if the base station informs the terminal that it can perform uplink LBT in 5 beam directions, but the terminal can only monitor 2 beam directions, it can determine that the 2 beam directions are the beam directions to be monitored.

[0075] Alternatively, the terminal may report the monitoring capability to the base station side to inform the base station side of the upper limit of the number of beam directions that it can monitor. The base station side determines the number of beam directions included in the beam direction information according to the monitoring capability when instructing the terminal.

[0076] In a specific implementation, the beam direction information can be indicated by an authorized primary cell. Further, the physical downlink control channel (PDCCH), the media access control-control element (MAC-CE) and the radio resource control (Radio Resource Control, At least one of RRC) indicates beam direction information. Correspondingly, the terminal can obtain beam direction information by authorizing at least one of PDCCH, MAC-CE and RRC in the primary cell.

[0077] Furthermore, when the PDCCH is used to indicate the beam direction information, an area can be set in the Downlink Control Information (DCI) to indicate the transmission configuration indication (TCI) status to indicate the above beam Direction information.

[0078] Among them, DCI may include one or more TCI states. Each TCI state can contain one or more CSI-RS resources (or CSI-RS resource set or CSI-RS), TRS resources (or TRS resource set or TRS), SSB, SRS resources (or SRS resource set or SRS) ) Or DRS (or DRS resource or DRS resource set). When multiple TCI states can be included in the DCI, the base station side can indicate multiple beam directions to the terminal. Or when DCI includes a TCI state, but the TCI contains multiple CSI-RS resources (or CSI-RS resource sets or CSI-RS), TRS resources (or TRS resource sets or TRS), SSB, SRS resources (or SRS resource set or SRS) or DRS (or DRS resource or DRS resource set), the base station side can indicate multiple beam directions to the terminal.

[0079] Correspondingly, the terminal can receive CSI-RS resources (or CSI-RS resource set or CSI-RS), TRS resources (or TRS resource set or TRS), SSB, or DRS (or DRS resource or DRS resource set). The LBT process is performed in the beam direction, and the LBT process can also be performed in the direction in which the terminal sends the SRS resource (or SRS resource set or SRS). That is, the beam direction to be monitored can be selected from: CSI-RS resources (or CSI-RS resource set or CSI-RS), TRS resources (or TRS resource set or TRS), SSB, SRS in one or more TCI states A set of directions determined by resources (or SRS resource set or SRS) or DRS (or DRS resource or DRS resource set).

[0080] As mentioned above, when the terminal reports its monitoring capability to the base station side, the number of beam directions included in the beam direction information can be determined according to the monitoring capability. For example, the number of TCI states included in the DCI can match the monitoring capability reported by the terminal.

[0081] Among them, the terminal can report to the base station the maximum supported number of SRS resources (or SRS resource set or SRS), or the maximum supported CSI-RS resource (or CSI-RS resource set or CSI-RS) number, or the maximum The number of supported TRS resources (or TRS resource sets or TRS), or the maximum supported number of SSBs, or the maximum supported DRS (or DRS resources or DRS resource sets) number represents its monitoring capability, that is, the maximum number of supported monitoring beams.

[0082] In another specific implementation, the base station side may indicate the beam direction information through an unlicensed LAA carrier. Specifically, the beam direction information may be indicated by at least one of PDCCH, MAC-CE, and RRC carried by an unlicensed LAA. Correspondingly, the terminal can obtain beam direction information through at least one of PDCCH, MAC-CE, and RRC carried by an unlicensed LAA.

[0083] Similar to indicating the beam direction information through the authorized primary cell, when the PDCCH is used to indicate the beam direction information, an area can be set in the DCI to indicate the TCI state, thereby indicating the above beam direction information to the terminal.

[0084] Further, the DCI may include one or more TCI states. Each TCI state can contain one or more CSI-RS resources (or CSI-RS resource set or CSI-RS), TRS resources (or TRS resource set or TRS), SSB, SRS resources (or SRS resource set or SRS) ) Or DRS (or DRS resource or DRS resource set). Or when DCI includes a TCI state, but the TCI contains multiple CSI-RS resources (or CSI-RS resource sets or CSI-RS), TRS resources (or TRS resource sets or TRS), SSB, SRS resources (or SRS resource set or SRS) or DRS (or DRS resource or DRS resource set), the base station side can indicate multiple beam directions to the terminal.

[0085] Correspondingly, the terminal can receive CSI-RS resources (or CSI-RS resource set or CSI-RS), TRS resources (or TRS resource set or TRS), SSB or DRS (or DRS resource or DRS resource set) in the beam direction The LBT process can also be performed in the direction in which the terminal sends the SRS resource (or SRS resource set or SRS).

[0086] In a specific implementation, the above-mentioned PDCCH may be the PDCCH last transmitted by the corresponding UE on an unlicensed LAA bearer or cell. Similarly, the MAC-CE may be the last MAC-CE transmitted by the corresponding UE on the unlicensed LAA bearer or on the cell.

[0087] In specific implementation, the terminal can also directly determine the beam direction of the beam to be monitored, which will be described separately below.

[0088] In a specific implementation, the terminal may determine that the direction of the uplink beam for the last uplink transmission is the direction of the beam to be monitored. Wherein, the direction of the uplink beam for the last uplink transmission may be one or more.

[0089] Further, the terminal may determine to send any one of the SRS, PUSCH, and PUCCH uplink beams in the uplink beam of the last uplink transmission, and use the direction of the one or more uplink beams as the beam direction to be monitored. Wherein, the uplink beam of the SRS type may be an uplink beam of any one of SRS, SRS resource, and SRS resource set.

[0090] In another specific implementation, the terminal may determine the downlink beam that received the downlink transmission last time, and use the direction of the uplink beam corresponding to the downlink beam or the direction of the downlink beam as the beam direction to be monitored.

[0091] Further, the terminal may determine that one or more downlink beams of any one of CSI-RS, SSB, PDCCH, PDSCH, and DRS are received in the downlink beam of the latest downlink transmission to communicate with the one or more downlink beams. The direction of the uplink beam corresponding to the downlink beam is used as the beam direction to be monitored. Wherein, receiving a CSI-RS type uplink beam may include receiving CSI-RS, CSI-RS resources, and any one of the CSI-RS resource sets; receiving a DRS type uplink beam may include receiving DRS, DRS resource and any kind of uplink beam in DRS resource concentration.

[0092] Those skilled in the art can understand that in LTE-LAA, there is DRS for UE synchronization and channel measurement. In LTE-LAA, DRS includes PSS, SSS and CRS, as well as optional CSI-RS.

[0093] In NR-LAA, DRS can be any of the following combinations: PSS and SSS; PSS, SSS, and PBCH; PSS, SSS, and TRS; PSS, SSS, PBCH, and TRS; PSS, SSS, and CSI-RS; PSS, SSS, PBCH and CSI-RS. Or, DRS can be other combinations.

[0094] In addition, various signals, channels, and other technical terms mentioned in the embodiments of the present invention may be the same or similar to those in LTE, or may be different from LTE, but may achieve similar functions.

[0095] The foregoing describes how the terminal obtains the possible directions of the beams to be monitored and the obtaining method. The foregoing obtaining methods can be used alone or in combination as required.

[0096] In a specific implementation, the direction of the beam to be monitored can be determined in combination with the terminal's own monitoring capability. When performing monitoring, the terminal may monitor only one beam direction at the same time, or may also monitor multiple beam directions at the same time, which will be described in more detail below.

[0097] In a specific implementation, the terminal monitors a beam to be monitored at the same time. Specifically, after determining that a beam to be monitored is not suitable for data transmission, the terminal may end the monitoring of the beam to be monitored; after the monitoring of the beam to be monitored is ended, start to monitor another beam to be monitored.

[0098] Wherein, determining that a beam to be monitored is not suitable for data transmission may include: within a preset time period, the beam to be monitored does not meet a condition suitable for data transmission. This implementation can be applied when the terminal has limited monitoring capabilities, for example, when the terminal can only monitor beams in one direction at the same time, or the implementation can also be selected according to the configuration of the terminal.

[0099] In another specific implementation, see figure 2 , The terminal monitoring the one or more beams to be monitored may include the following steps:

[0100] Step S21: Determine the window length of the time window;

[0101] Step S22, monitoring any of the beams to be monitored within the window duration;

[0102] Step S23: After the monitoring of any of the beams to be monitored ends, or before the monitoring of any of the beams to be monitored ends, start the monitoring of another beam to be monitored within the window duration.

[0103] Wherein, the end of monitoring of any of the beams to be monitored includes that the beam to be monitored does not meet the conditions suitable for data transmission within the window duration. The window duration of the time window may be configured through higher layer signaling (such as RRC) or MAC-CE or PDCCH. In addition, the window duration of the time window can also be a timer (Timer), which can be specifically configured by high-level signaling (such as RRC) or MAC-CE or PDCCH. When the timer expires (Timer expires), confirm all beams to be monitored. It is not suitable for stopping when data transmission.

[0104] Before the monitoring of any of the beams to be monitored is ended, it means that during the monitoring of the beam to be monitored, the beam to be monitored has not yet met the conditions suitable for data transmission, and the monitoring time is less than the window duration. Therefore, when monitoring any one or more beams to be monitored, the condition for starting to monitor another beam to be monitored within the window duration is that none of the beams to be monitored that is being monitored does not meet the conditions suitable for data transmission .

[0105] In specific implementations, a fixed time period can be set, and start to wait after the monitoring of the previous beam to be monitored starts. After waiting for the above fixed time period, if none of the previous beams to be monitored is suitable for data transmission If conditions are met, the monitoring of the new beam to be monitored within the window duration is started.

[0106] Similar to the window duration, the fixed duration may be configured through higher layer signaling (such as RRC) or MAC-CE or PDCCH. In addition, the fixed duration can also be a timer (Timer), which can be specifically configured by high-level signaling (such as RRC) or MAC-CE or PDCCH. When the timer expires (Timer expires), the confirmation reaches the A fixed duration to determine whether to start monitoring the new beam to be monitored.

[0107] Combine figure 2 with image 3 For further explanation, image 3 Three time windows are shown in, namely time window W1, time window W2, and time window W3. Monitor different beams to be monitored in each time window. At time T1, the terminal monitors one beam to be monitored, and at time T2, the terminal monitors two beams to be monitored at the same time. By setting the length of the time window and the starting position for monitoring the next beam to be monitored, the number of beams monitored by the terminal at the same time can be controlled, and the efficiency of the uplink LBT method can be improved.

[0108] in image 3 , After starting to monitor a beam to be monitored in the time window W1, wait for a fixed time t 3 Later, if the beam to be monitored in the time window W1 does not meet the conditions suitable for data transmission (or the duration of the time window W1 has ended), then the monitoring of another beam to be monitored in the time window W2 is started. After starting to monitor a beam to be monitored in the time window W2, if the duration of the time window W1 has ended (or the beam to be monitored in the time window W1 still does not meet the conditions suitable for data transmission), and the time window W2 If the beam to be monitored does not meet the conditions suitable for data transmission (or the duration of the time window W2 has ended), then it starts to monitor another beam to be monitored in the time window W3.

[0109] In a specific implementation, the window duration may not be set separately for each beam to be monitored, and the total window duration may be set for all beams, for example, see Image 6 , You can wait for a fixed time t after monitoring the beam B1 to be monitored 3 , If the beam B1 to be monitored at this time does not meet the conditions suitable for data transmission, then the monitoring of the beam B2 to be monitored is started; after the beam B2 to be monitored is monitored, it waits again for a fixed duration t 3 If the beam B1 to be monitored does not meet the conditions suitable for data transmission, and the monitoring beam B2 does not meet the conditions suitable for data transmission, the monitoring of the beam B3 to be monitored starts.

[0110] The process of monitoring each beam may stop at discovering beams suitable for data transmission among all beams to be monitored, or confirming that all beams to be monitored are not suitable for data transmission. For example, you can set the window duration t 4 If no beam suitable for data transmission is found within this time period, the monitoring of all beams to be monitored is stopped.

[0111] In other specific implementations, the terminal may also monitor multiple beams to be monitored at the same time.

[0112] Specifically, monitoring multiple beams to be monitored at the same time may be to start monitoring all beams to be monitored at the same time until a beam suitable for data transmission is found in all beams to be monitored; or it can be stopped according to the configuration, For example, stop when confirming that all beams to be monitored are not suitable for data transmission within a predetermined time. Among them, the predetermined time may be configured through higher layer signaling (such as RRC) or MAC-CE or PDCCH. In addition, the predetermined time can also be a timer (Timer), which can be specifically configured by high-level signaling (such as RRC) or MAC-CE or PDCCH. When the timer expires (Timer expires), it is confirmed that all beams to be monitored are unsuitable. Stop during data transfer. Further, it is suitable for data transmission to be determined by the following conditions: it is measured that all time slots are idle within one delay period, and all time slots are measured to be idle within an integer number of additional delay periods. The number of additional delay durations can be determined according to the priorities of different beams to be monitored. The higher the priority of the beams to be monitored, the fewer the number of additional delay durations that need to be measured.

[0113] Furthermore, the priority of the beam to be monitored may be determined according to the priority of the terminal's transmission on the LAA, or the beam level configuration may be performed through high-level signaling (such as RRC) or MAC-CE or PDCCH.

[0114] Figure 4 It is a partial flowchart of another specific implementation of the terminal to monitor the beam to be monitored in the embodiment of the present invention, which may include Step 1 to Step 6.

[0115] Step Step1, set N i =N init , Where N i Corresponds to each beam direction to be monitored.

[0116] Among them, i∈m, m is the number of beams to be monitored, N init It is a uniformly distributed random number in the interval [0, CW], and the CW is configured according to the priority of the terminal's transmission on the LAA.

[0117] Step 4, judge whether there is any N i The value is 0, if there is any N i If the value is 0, it ends, otherwise, step 2 is executed.

[0118] Step 2. For each beam direction to be monitored, if N i0, and allow N i When the value changes, make N i =N i -1.

[0119] In step Step3, it is judged whether the monitoring result in the time slot with additional delay time is idle, if yes, step 4 is executed, otherwise, step 5 is executed.

[0120] Wherein, judging whether the monitoring result in the time slot of the additional delay duration is idle is to judge all time slots in the additional delay duration of each beam to be monitored.

[0121] Step Step4, if any N i If the value is 0, stop, otherwise execute Step2.

[0122] Step 5, monitor until a busy time slot is detected within an additional delay time, or all time slots are idle within an additional delay time.

[0123] Wherein, the monitoring in step Step 5 is continued for each beam to be monitored whose monitoring result in step 3 is not idle.

[0124] Step 6, if all time slots are idle within an additional delay period, then step 4 is executed, otherwise, step 5 is continued.

[0125] In specific implementation, if the monitoring result of any beam to be monitored in the delay time is idle, and in step Step4, its corresponding N i If the value is 0 first, it can be determined that the beam to be monitored is suitable for data transmission. You can stop monitoring other beams to be monitored.

[0126] Among them, the time domain length of the defer duration and the additional deferduration, the relationship between the two, and how to determine whether a beam to be monitored is idle in the two can be referred to its configuration in LTE. It should be noted that the specific parameter values ​​of the parameters appearing in the configuration in LTE are only exemplary descriptions, and the present invention is not limited. When the above-mentioned similar rules are met, the values ​​of related parameters may also be other parameter values. It belongs to the protection scope of the present invention.

[0127] The method of judging whether to perform data transmission for each beam to be monitored in the embodiment of the present invention can also be the same or similarly applicable to the aforementioned scenario of monitoring a beam to be monitored at the same time, and can also be applied to the aforementioned passing device. A scene where the beam to be monitored is monitored by a fixed time window.

[0128] In a specific implementation, after determining the beam to be monitored suitable for data transmission, the terminal can use the beam to perform uplink data transmission.

[0129] In the NR system, the supported unlicensed spectrum types are generally divided into two categories: one is a standalone LAA (standalone LAA), and the other is a non-standalone LAA (non-standalone LAA). Among them, the latter clock is configured with an authorized primary cell (licensed pcell), which can assist in the transmission of some channels or reference signals or configuration information. The uplink LBT method in the embodiment of the present invention is applicable in the above two scenarios.

[0130] The embodiment of the present invention also provides an uplink LBT device, which is suitable for a terminal. For a structural diagram, see Figure 5 , Which can specifically include:

[0131] The beam direction determining unit 51 is adapted to determine a beam direction to be monitored of one or more beams to be monitored, and the beam to be monitored is selected from beams in an unlicensed spectrum range;

[0132] The monitoring unit 52 is adapted to monitor the one or more beams to be monitored to determine a beam suitable for data transmission.

[0133] In a specific implementation, the beam direction determining unit 51 may include: a beam direction information obtaining subunit, adapted to obtain beam direction information from the base station side; and a determining subunit, adapted to determine the one or more beam direction information according to the beam direction information. The direction of the beam to be monitored for each beam to be monitored.

[0134] In a specific implementation, the beam direction information obtaining subunit is adapted to obtain the beam direction information through an authorized primary cell.

[0135] In a specific implementation, the beam direction information acquiring subunit is adapted to acquire the beam direction information through at least one of PDCCH, MAC-CE and RRC in the authorized primary cell.

[0136] In a specific implementation, the beam direction information obtaining subunit is adapted to obtain the beam direction information through an unauthorized LAA.

[0137] In a specific implementation, the beam direction information obtaining subunit is adapted to obtain the beam direction information through at least one of PDCCH, MAC-CE, and RRC carried by an unauthorized LAA.

[0138] In a specific implementation, the beam direction information obtaining subunit obtains the beam direction information through the PDCCH may include: obtaining the beam direction information through the TCI status in the DCI.

[0139] In a specific implementation, the beam direction determining unit 51 further includes: a monitoring capability reporting unit, adapted to report the monitoring capability to the base station side before receiving the beam direction information from the base station side, and the number of beam directions contained in the beam direction information Determined according to the monitoring capability.

[0140] In a specific implementation, the beam direction determining unit 51 is adapted to determine that the direction of the uplink beam for the last uplink transmission is the beam direction to be monitored.

[0141] In a specific implementation, the beam direction determining unit 51 is adapted to determine to send any one of the SRS, PUSCH, and PUCCH uplink beams in the uplink beam of the last uplink transmission, and the direction of the uplink beam is used as the direction of the uplink beam. State the beam direction to be monitored.

[0142] In a specific implementation, the beam direction determining unit 51 is adapted to determine the downlink beam that received the downlink transmission last time, and use the direction of the uplink beam corresponding to the downlink beam or the direction of the downlink beam as the beam direction to be monitored .

[0143] In a specific implementation, the beam direction determining unit 51 is adapted to determine that any one of the CSI-RS, SSB, PDCCH, PDSCH, and DRS downlink beams is received in the downlink beam of the latest downlink transmission, to compare The direction of the uplink beam corresponding to the downlink beam or the direction of the downlink beam is used as the beam direction to be monitored.

[0144] In a specific implementation, the monitoring unit 52 is adapted to monitor a beam to be monitored at the same time.

[0145] In a specific implementation, the monitoring unit 52 is adapted to end the monitoring of the beam to be monitored after determining that the beam to be monitored is not suitable for data transmission, and after the monitoring of the beam to be monitored is ended, start to monitor another beam to be monitored. The beam is monitored.

[0146] In a specific implementation, determining that a beam to be monitored is not suitable for data transmission may include: within a preset time period, the beam to be monitored does not meet a condition suitable for data transmission.

[0147] In specific implementation, the monitoring unit 52 may include: a window duration determining subunit, adapted to determine the window duration of a time window; a window monitoring subunit, adapted to perform monitoring on any beam to be monitored within the window duration Monitoring; the window monitoring new subunit is adapted to start monitoring another beam to be monitored in the window after monitoring of any beam to be monitored is finished, or before monitoring of any beam to be monitored is finished Monitoring within a time duration, where the monitoring end includes that the beam to be monitored does not meet a condition suitable for data transmission within the window duration.

[0148] In a specific implementation, the monitoring unit 52 is adapted to monitor multiple beams to be monitored at the same time.

[0149] In a specific implementation, the monitoring unit 52 is adapted to start monitoring all the beams to be monitored at the same time, until a beam suitable for data transmission is found among all the beams to be monitored, or it is confirmed that all the beams to be monitored are not suitable for data transmission. .

[0150] In a specific implementation, the suitability for data transmission is determined by the following conditions: it is measured that all time slots are idle within one delay period, and all time slots are measured to be idle within an integer number of additional delay periods .

[0151] In a specific implementation, the number of additional delay durations is determined according to the priorities of different beams to be monitored. The higher the priority of the beams to be monitored, the fewer the number of additional delay durations that need to be measured.

[0152] In a specific implementation, the priority of different beams to be monitored is determined according to the priority of the terminal's transmission on the LAA.

[0153] In a specific implementation, the monitoring unit 52 may include: a delay duration monitoring subunit, adapted to monitor each beam to be monitored within the delay duration; a variable setting subunit, adapted to set Ni=Ninit, where Ni corresponds to For each beam direction to be monitored, i∈m, m is the number of beams to be monitored, Ninit is a uniformly distributed random number in the interval [0, CW], and CW is configured according to the priority of terminal transmission on LAA; confirm; Subunit, for each beam direction to be monitored, if any Ni value is 0, and all time slots of the beam to be monitored corresponding to Ni are idle within the delay period, it is confirmed that the beam to be monitored corresponding to Ni is suitable For data transmission; variable value change subunit, for each beam direction to be monitored, if Ni>0, and when the value of Ni is allowed to change, make Ni=Ni-1; repeat subunit, suitable for monitoring beam direction When the monitoring result in the time slot with additional delay duration is idle, the judgment on the value of Ni is repeated.

[0154] In a specific implementation, the uplink LBT device may further include: a data transmission unit adapted to use the to-be-monitored beam suitable for data transmission for data transmission.

[0155] For the specific implementation and beneficial effects of the uplink LBT apparatus in the embodiment of the present invention, reference may be made to the uplink LBT method in the embodiment of the present invention, which will not be repeated here.

[0156] The embodiment of the present invention also provides a computer-readable storage medium on which computer instructions are stored, and the steps of the uplink LBT method are executed when the computer instructions are executed. The computer-readable storage medium may be an optical disk, a mechanical hard disk, a solid state hard disk, and the like.

[0157] An embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the uplink LBT when the computer instructions are executed. Method steps. The terminal may be various suitable terminals such as smart phones and tablet computers.

[0158] Although the present invention is disclosed as above, the present invention is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.