Method, device, equipment and storage medium for determining channel detection mechanism

Abstract

To provide a determination method for channel detection mechanism that is applied to a scenario to use an up-link channel of an unlicensed spectrum to perform up-link transmission.SOLUTION: A method includes the steps of: receiving, by a terminal, notice information transmitted from a base station; and determining, based upon the notice information, a channel detection mechanism to be used for up-link transmission. The terminal accurately determines the channel detection mechanism to be used for the up-link transmission, and then other radio communication systems equally and efficiently occupy channel resources on an unlicensed spectrum.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to the field of communications, and more particularly to a method, apparatus, device and storage medium for determining a channel detection mechanism. [Background technology]

[0002] The Third Generation Partnership Project (3GPP) has proposed using unlicensed spectrum through a License Assisted Access (LAA) mechanism, i.e., supporting the use of unlicensed spectrum by licensed spectrum.

[0003] A channel detection mechanism is introduced into LAA, i.e., when a terminal sends an uplink transmission, it needs to detect whether the uplink channel is idle, and it can transmit data only when the uplink channel is idle.

[0004] Signaling or data for uplink transmission may have various formats, and the transmission priority of different signaling or data may also be different. Since there are various types of channel detection mechanisms, there is no solution yet for how to use a reasonable channel detection mechanism for different uplink transmissions. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present disclosure provide a method, device, apparatus, and storage medium for determining a channel detection mechanism, which can be used to solve the problem of how to select a reasonable channel detection mechanism when performing uplink transmission using an uplink channel in an unlicensed spectrum. [Means for solving the problem]

[0006] According to one aspect of the present disclosure, there is provided a method for determining a channel detection mechanism, the method being applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the method comprising: receiving notification information transmitted from a base station by a terminal; The terminal determines a channel detection mechanism to be used for the uplink transmission based on the signaling information.

[0007] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; The step of receiving notification information transmitted from the base station by the terminal includes: a step of receiving, by the terminal, configuration signaling transmitted from the base station, the configuration signaling corresponding to the uplink transmission, the notification information being held in the configuration signaling; or The method includes a step of the terminal receiving independent signaling transmitted from the base station, the independent signaling being signaling different from the configuration signaling, and the independent signaling holding the notification information.

[0008] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The step of receiving notification information transmitted from the base station by the terminal includes: The method includes a step in which the terminal receives scheduling signaling transmitted from the base station, the scheduling signaling being scheduling signaling corresponding to the uplink transmission, and the notification information being held in a preset position of the scheduling signaling.

[0009] In one alternative embodiment, the step of receiving notification information transmitted from the base station by the terminal includes: If the channel occupancy time corresponding to the uplink transmission is initiated by the base station, the terminal may receive notification information transmitted from the base station.

[0010] According to another aspect of the present disclosure, there is provided a method for determining a channel detection mechanism, the method being applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the method comprising: If the channel occupancy time corresponding to the uplink transmission is initiated by the terminal, the terminal determines a type of the uplink transmission; The terminal determines a channel detection mechanism corresponding to the type according to the correspondence relationship.

[0011] In one alternative embodiment, the correspondence is predefined by a communication protocol, or the correspondence is configured from a base station to the terminal.

[0012] According to another aspect of the present disclosure, there is provided a method for determining a channel detection mechanism, the method being applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the method comprising: generating signaling information by a base station to indicate a channel detection mechanism to be used for the uplink transmission; The base station transmits the notification information to a terminal.

[0013] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; The step of transmitting the notification information by the base station to the terminal includes: a step of the base station transmitting configuration signaling to the terminal, the configuration signaling being configuration signaling corresponding to the uplink transmission, and the notification information being held in the configuration signaling; or The method includes a step of the base station transmitting independent signaling to the terminal, the independent signaling being different from the configuration signaling, and the independent signaling carrying the notification information.

[0014] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The step of transmitting the notification information by the base station to the terminal includes: The step of the base station transmitting scheduling signaling to the terminal, the scheduling signaling being scheduling signaling corresponding to the uplink transmission, and the notification information being held in a preset position of the scheduling signaling, is included.

[0015] In one alternative embodiment, the step of the base station transmitting the notification information to the terminal includes: If the channel occupancy time corresponding to the uplink transmission is initiated by the base station, the base station may transmit the notification information to the terminal.

[0016] According to another aspect of the present disclosure, there is provided an apparatus for determining a channel detection mechanism, adapted for a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the apparatus comprising: a receiving module configured to receive notification information sent from a base station; and a determination module configured to determine a channel detection mechanism to be used for the uplink transmission based on the signaling information.

[0017] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; the receiving module is configured to receive configuration signaling transmitted from the base station, the configuration signaling being configuration signaling corresponding to the uplink transmission, and the notification information being held in the configuration signaling; or The receiving module is configured to receive independent signaling transmitted from the base station, the independent signaling being signaling different from the configuration signaling, and the notification information being held in the independent signaling.

[0018] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The receiving module is configured to receive scheduling signaling transmitted from the base station, the scheduling signaling being scheduling signaling corresponding to the uplink transmission, and the notification information being held at a preset position of the scheduling signaling.

[0019] In one alternative embodiment, the receiving module is configured to cause the terminal to receive notification information sent from the base station when a channel occupancy time corresponding to the uplink transmission is initiated by the base station.

[0020] According to another aspect of the present disclosure, there is provided an apparatus for determining a channel detection mechanism, adapted for a terminal performing uplink transmission using an uplink channel of an unlicensed spectrum, the apparatus comprising: a first determination module configured to determine a type of the uplink transmission when a channel occupancy time corresponding to the uplink transmission is initiated by the terminal; and a second determination module configured to determine a channel detection mechanism corresponding to the type according to the correspondence relationship.

[0021] In one alternative embodiment, the correspondence is predefined by a communication protocol, or the correspondence is configured from a base station to the terminal.

[0022] According to another aspect of the present disclosure, there is provided an apparatus for determining a channel detection mechanism, adapted for a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the apparatus comprising: a generating module configured to generate notification information for indicating a channel detection mechanism to be used for the uplink transmission; a transmitting module configured to transmit the signaling information to a terminal and to determine a channel detection mechanism to be used for the uplink transmission.

[0023] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; the transmitting module is configured to transmit configuration signaling to the terminal, the configuration signaling being configuration signaling corresponding to the uplink transmission, and the notification information being held in the configuration signaling; or The sending module is configured to send independent signaling to the terminal, the independent signaling being signaling different from the configuration signaling, and the independent signaling carrying the notification information.

[0024] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The transmitting module is configured to transmit the terminal transmission scheduling signaling, the scheduling signaling being a scheduling signaling corresponding to the uplink transmission, and the notification information being held at a predetermined position of the scheduling signaling.

[0025] In one alternative embodiment, the transmitting module is configured to transmit the notification information to the terminal when a channel occupation time corresponding to the uplink transmission is initiated by a base station.

[0026] According to another aspect of the present disclosure, there is provided a terminal, the terminal comprising: a processor; a transceiver coupled to the processor; a memory that stores instructions executable by the processor; The processor is configured to load and execute executable instructions to implement the method for determining the channel detection mechanism performed by the terminal side described above.

[0027] According to another aspect of the present disclosure, there is provided a base station, the base station comprising: a processor; a transceiver coupled to the processor; a memory that stores instructions executable by the processor; The processor is configured to load and execute executable instructions to implement the above-described method for determining the channel detection mechanism performed by the terminal side.

[0028] According to another aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon at least one instruction, program, code set, or instruction set, the instruction, program, code set, or instruction set being loaded and executed by the processor to implement the method for determining a channel detection mechanism as described in any of the above aspects. [Effects of the Invention]

[0029] The technical solutions provided by the embodiments of the present disclosure include at least the following beneficial effects: The terminal receives notification information transmitted from the base station and determines the channel detection mechanism to be used for uplink transmission based on the notification information, thereby enabling the terminal to accurately determine the channel detection mechanism to be used for uplink transmission, thereby enabling other wireless communication systems to fairly and efficiently occupy channel resources on the unlicensed spectrum. [Brief explanation of the drawings]

[0030] In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings necessary for describing the embodiments. The drawings in the following description are only some embodiments of the present disclosure, and it is obvious that a person skilled in the art can derive other drawings based on these drawings without exerting any creative effort. [Figure 1] FIG. 1 is a schematic diagram of channel interception for LBT Cat. 2 according to the present disclosure. [Figure 2] FIG. 1 is a schematic diagram of channel interception for LBT Cat. 4 according to the present disclosure. [Figure 3] 1 is a block diagram of a wireless communication system provided by one exemplary embodiment of the present disclosure. [Figure 4] 4 is a flowchart of a method for determining a channel detection mechanism provided by one exemplary embodiment of the present disclosure. [Figure 5] 10 is a flowchart of a method for determining a channel detection mechanism provided by another exemplary embodiment of the present disclosure. [Figure 6] 10 is a flowchart of a method for determining a channel detection mechanism provided by another exemplary embodiment of the present disclosure. [Figure 7] 10 is a flowchart of a method for determining a channel detection mechanism provided by another exemplary embodiment of the present disclosure. [Figure 8] 8 is a schematic diagram of an illustrative example of a determination method of a channel detection mechanism provided by the embodiment of FIG. 7. [Figure 9]10 is a flowchart of a method for determining a channel detection mechanism provided by another exemplary embodiment of the present disclosure. [Figure 10] 10 is a schematic diagram of an illustrative example of a determination method of a channel detection mechanism provided by the embodiment of FIG. 9. [Figure 11] FIG. 2 is a schematic block diagram of a determination device of a channel detection mechanism provided by one exemplary embodiment of the present disclosure. [Figure 12] FIG. 2 is a schematic block diagram of a determination device of a channel detection mechanism provided by one exemplary embodiment of the present disclosure. [Figure 13] FIG. 2 is a schematic block diagram of a determination device of a channel detection mechanism provided by one exemplary embodiment of the present disclosure. [Figure 14] FIG. 2 is a schematic structural diagram of a wireless communication device provided by another exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the following describes in more detail the embodiments of the present disclosure in conjunction with the accompanying drawings.

[0032] To ensure coexistence with other wireless systems on unlicensed spectrum, such as with Wireless Fidelity Systems (WiFi), a mechanism is also introduced in LAA that requires channel detection before data transmission. Before describing embodiments of the present disclosure, a brief description of the channel detection mechanism according to the present disclosure will be given.

[0033] Channel detection mechanisms can generally include the following five types:

[0034] First type (Category 1): Does not include LBT (Listen before talk), meaning that wireless communication devices do not need to perform channel detection before transmitting information, but transmit information directly. LBT may also be called an interception avoidance mechanism, enabling effective sharing of unlicensed spectrum. Before transmitting LBT transmission information, the channel is first intercepted and CCA (Clear Channel Assessment) is performed to ensure that the channel is idle before transmission.

[0035] Second type (LBT Cat.2): This is an LBT mechanism that does not include a random backoff process. Before transmitting information, the wireless communication device only needs to detect one time granularity, for example, the time granularity may be 25 us. If the channel is idle within this time granularity, the wireless communication device can transmit information. If not, the LBT execution fails, and the wireless communication device cannot transmit information.

[0036] In the schematic diagram 1, the wireless communication device performs CCA interception of a single time slot, and if the interception result for the channel in the first CCA time slot and the third CCA time slot is idle, the wireless communication device can occupy the channel for data transmission. If the interception result for the channel in the second CCA time slot is busy, the wireless communication device cannot occupy the channel for data transmission, which is referred to as no data transmission.

[0037] Third type (LBT Cat. 3): A random backoff LBT mechanism with a fixed CWS (Contention Window Size). The transmitting device first detects whether the channel is idle at a first time granularity. If the channel is detected as idle, it selects a random number N within the first contention window and performs channel detection at a second time granularity. If the channel is detected as idle at the second time granularity and the value of the random number is not 0, it subtracts 1 from the random number and continues to perform channel detection at the second time granularity. If the channel is detected as busy at the second time granularity, it performs channel detection again at the first time granularity. If the channel is again detected as idle at the first time granularity and the value of the random number is not 0, it subtracts 1 from the random number and resumes performing channel detection at the second time granularity. If the random number does not become 0, it does not indicate that the channel is idle.

[0038] The fourth type (LBT Cat.4): This is a random backoff LBT mechanism with variable CWS. Based on LBT Cat.3, the transmitting device can adjust CWS based on the results of the previous transmission. For example, if the percentage of data transmitted within the reference time of the previous transmission process that was not received correctly is X, and X exceeds a threshold, the CWS value is increased. To further refine the parameter settings in the LBT process, LBT Cat.4 sets four priorities, each corresponding to a different parameter configuration. Data transmissions of different traffic types correspond to different priorities.

[0039] The principle of LBT Cat.4 is as follows: A wireless communication device first detects whether a channel is idle at a first time granularity. If the channel is detected as idle, it selects a value N of a fallback counter (also called a random number) within the first contention window and performs channel detection at a second time granularity. If the channel is detected as idle at the second time granularity and the value of the fallback counter is not 0, it subtracts 1 from the fallback counter and continues channel detection at the second time granularity. If the channel is detected as busy at the second time granularity, it performs channel detection again at the first time granularity. If the channel is again detected as idle at the first time granularity and the value of the fallback counter is not 0, it subtracts 1 from the fallback counter and resumes channel detection at the second time granularity. The channel cannot be declared as occupied until the counter value reaches 0.

[0040] In schematic diagram 2, the wireless communication device generates a fallback counter N evenly and randomly between 0 and the contention window size (CWS), and monitors the CCA slot as a granularity. Taking the first Physical Downlink Shared Channel (PDSCH) transmission corresponding to CWS=15 and N=7 as an example, the channel monitoring result is idle in the first and second monitoring slots, and N is reduced to 5. The channel monitoring result is busy in the third through sixth monitoring slots, so N remains unchanged and monitoring is resumed after four monitoring slots. The channel monitoring result is idle in the first through fifth monitoring slots, so N is reduced to 0, and the wireless communication device begins occupying the channel for data transmission.

[0041] In this data transmission process, if the wireless communication device receives a negative feedback (NACK), it indicates that the data transmission has failed. According to this error reception state, the wireless communication device dynamically increases CWS=31, regenerates the fallback counter N=20, and uses the increased CWS and fallback counter N to listen to the channel before the second PDSCH transmission. If the channel monitoring results of 20 consecutive monitoring time slots are idle, the channel is occupied for data transmission.

[0042] Different contention window sizes CWS correspond to different channel access priorities p. In an illustrative example, Table 1 shows four priority parameter configurations for downlink LBT Cat.4, and Table 2 shows four priority parameter configurations for uplink LBT Cat.4, with only slight differences in the configured values. [Table 1-1] [Table 1-2]

[0043] In the four channel access priorities shown in Tables 1 and 2 above, the smaller the p value, the higher the corresponding channel access priority. p is the number of ECCAs (Extended Clear Channel, which extends idle channel assessment) included in the delay time, and each delay time consists of a fixed 16us time and mp ECCAs, i.e., the first time granularity described in the previous paragraph. CW min,p and C.W. max,p are the minimum and maximum contention window values, and the CWS of the LBT process is generated between these two values. Then, the contention window CW generated from 0 is p The backoff counter N is randomly generated in the LBT channel detection process to determine the length of the backoff time, and T mcot,pis the maximum time that the channel can be occupied after the successful execution of the LBT Cat.4 corresponding to each priority. As can be seen from the table above, compared with priorities 1 and 2, the execution time of the LBT process for priorities 3 and 4 is longer, and the chance of obtaining channel access is relatively lower. In order to ensure fairness, the maximum transmission time that can be occupied by data transmission for these two priorities is also relatively long.

[0044] The fifth type is a channel detection mechanism based on a frame structure, i.e., FBE (Frame Based Equipment). For FBE, one period is set, and one channel detection is performed at a fixed position in each period. For example, CCA detection is performed within each CCA detection time. If the channel state is detected as idle, the channel can be occupied for transmission, and the maximum channel occupancy time is fixed. CCA detection is performed again at the CCA detection time of the next period. If the channel state is detected as non-idle, the device cannot occupy the channel within this period, and continues detection at a fixed position in the next period. The fixed period refers to a time domain unit scheduled by FBE. For example, the fixed period may be a fixed frame period (FFP). The time of the fixed period may be predetermined by a protocol.

[0045] It should be noted that the above five channel detection mechanisms are merely illustrative examples, and as communication technology evolves, the above five channel detection mechanisms may change or new channel detection mechanisms may be created, but all are applicable to the technical solutions described in this disclosure.

[0046] The network architectures and business scenarios described in the embodiments of the present disclosure are intended to more clearly explain the technical solutions of the embodiments of the present disclosure, and do not constitute limitations on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will recognize that with the evolution of network architectures and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure can be similarly applied to similar problems.

[0047] 3 is a block diagram of a wireless communication system provided by one exemplary embodiment of the present disclosure, which may include a base station 310 and a terminal 320.

[0048] The base station 310 is located in an access network. The access network of a 5G NR system may be referred to as a New Generation-Radio Access Network (NG-RAN). The base station 310 and the terminal 320 communicate with each other via an air interface technology, and may communicate with each other via, for example, cellular technology.

[0049] The base station 310 is a device located in an access network and providing wireless communication functions for the terminal 320. The base station 310 may include various types of macrocells, micro base stations, relay stations, access points, etc. In systems using different radio access technologies, the name of a device providing base station functionality may differ; for example, in a 5G NR system, it is called a gNodeB or gNB. As communication technologies evolve, the name "base station" may change. For ease of explanation, in embodiments of the present disclosure, devices providing wireless communication functions for the terminal 320 are collectively referred to as a base station. In other embodiments, the base station 310 may also be an access network device.

[0050] The number of terminals 320 is typically plural, and one or more terminals 320 may be distributed within a cell managed by each base station 310. The terminals 320 may include handheld devices, in-vehicle devices, wearable devices, computing devices or other processing devices connected to wireless modems, and various types of user devices (UE), mobile stations (MS), terminal devices, etc., with various wireless communication capabilities. For ease of explanation, the above devices are collectively referred to as terminals in the embodiments of the present disclosure.

[0051] The "5G NR system" in the embodiments of the present disclosure may be referred to as a 5G system or an NR system, and those skilled in the art will understand the meaning thereof. The technical solutions described in the embodiments of the present disclosure may be applied to the 5G NR system and to subsequent evolutionary systems of the 5G NR system. The 5G NR system may be used in an LAA scenario.

[0052] 4 shows a flowchart of a method for determining a channel detection mechanism provided by one exemplary embodiment of the present disclosure. The method may be performed by the wireless communication system shown in FIG. 3 and may be applied to a scenario in which a wideband spectrum is used for transmission on an unlicensed spectrum. The method includes the following steps:

[0053] In step 402, the base station generates signaling information, which indicates a channel detection mechanism to be used for uplink transmission.

[0054] Uplink transmission includes transmission of uplink control signaling or transmission of uplink data. The uplink control signaling includes control signaling loaded on a Physical Uplink Control Channel (PUCCH) and a Physical Uplink Shared Channel (PUSCH), as well as some pilot signals for measurement. The uplink data includes data loaded on a PUSCH.

[0055] Because different uplink signaling or uplink data have different transmission priorities, the channel detection mechanisms used for different uplink signaling or uplink data may also be different.

[0056] The channel detection mechanism includes, but is not limited to, any of the five types of channel detection mechanisms listed above.

[0057] In step 404, the base station sends notification information to the terminal.

[0058] Optionally, the base station sends notification information to the terminal using higher layer signaling, including but not limited to Radio Resource Control (RRC) signaling, Medium Access Control (MAC CE) signaling, or physical layer signaling.

[0059] In step 406, the terminal receives the notification information sent from the base station.

[0060] In step 408, the terminal determines a channel detection mechanism to be used for uplink transmission based on the signaled information.

[0061] As described above, the method provided by this embodiment allows a terminal to receive notification information transmitted from a base station and determine a channel detection mechanism to be used for uplink transmission based on the notification information, thereby enabling the terminal to accurately determine a channel detection mechanism to be used for uplink transmission, thereby enabling other wireless communication systems to occupy channel resources on unlicensed spectrum fairly and efficiently.

[0062] Uplink transmission can be divided into two types: configuration type uplink transmission and scheduling type uplink transmission.

[0063] The configuration-type uplink transmission refers to a configuration signaling that a base station transmits to a terminal, and the terminal continues to perform uplink transmission using the configuration of the configuration signaling before receiving the next configuration signaling. The configuration signaling statically or semi-statically configures information such as the transmission type of the uplink transmission, the time-frequency resource to be used, and the period to be used.

[0064] Scheduling-type uplink transmission refers to a case where a base station dynamically transmits scheduling signaling to a terminal, and the terminal performs one or more uplink transmissions according to the scheduling signaling. The scheduling signaling dynamically configures information such as the transmission type of the uplink transmission, the time-frequency resource to be used, and the period to be used. Optionally, the scheduling signaling is downlink control information (DCI).

[0065] In an alternative embodiment based on FIG. 4, for a configuration type uplink transmission, as shown in FIG. 5, the method includes the following steps:

[0066] In step 402a, the base station generates configuration signaling, the configuration signaling carrying notification information indicating a channel detection mechanism to be used for uplink transmission.

[0067] Optionally, the base station stores a correspondence relationship between uplink transmission types and channel detection mechanisms, and the base station determines a channel detection mechanism corresponding to the current uplink transmission type based on the correspondence relationship, and further generates notification information.

[0068] The configuration signaling statically or semi-statically configures information such as the transmission type of the uplink transmission, the time-frequency resources used, and the periodicity used.

[0069] In this embodiment, the configuration signaling further carries notification information.

[0070] In step 404a, the base station sends configuration signaling to the terminal.

[0071] In step 406a, the terminal receives configuration signaling sent from the base station.

[0072] In step 408a, the terminal determines a channel detection mechanism to be used for uplink transmission based on the signaling information of the configuration signaling.

[0073] As described above, the method provided by this embodiment reduces the number of signaling interactions required between the base station and the terminal by storing and transmitting notification information in configuration signaling, thereby improving communication efficiency between the base station and the terminal.

[0074] In an alternative embodiment based on FIG. 4, a separate signaling is used for transmission of the configuration type uplink transmission, and the separate signaling is a signaling different from the configuration signaling. As shown in FIG. 6, the method includes the following steps:

[0075] In step 402b, the base station generates independent signaling, the independent signaling carrying notification information, which indicates a channel detection mechanism to be used for uplink transmission.

[0076] Optionally, the base station stores a correspondence relationship between the type of uplink transmission and the channel detection mechanism, and the base station determines the channel detection mechanism corresponding to the current uplink transmission type based on the correspondence relationship, and further generates an independent signaling carrying notification information.

[0077] In step 404b, the base station transmits independent signaling to the terminal.

[0078] In step 406b, the terminal receives independent signaling transmitted from the base station.

[0079] In step 408b, the terminal determines a channel detection mechanism to be used for uplink transmission based on the notification information of the independent signaling.

[0080] As described above, the method provided by this embodiment transmits notification information in independent signaling, thereby eliminating the need for conventional configuration formats between the base station and the terminal, thereby reducing the number of signaling interactions required between the base station and the terminal and improving communication efficiency between the base station and the terminal.

[0081] In an alternative embodiment based on FIG. 4, for a scheduled type uplink transmission, as shown in FIG. 7, the method includes the following steps:

[0082] In step 402c, the base station generates scheduling signaling, where the scheduling signaling carries notification information, which indicates a channel detection mechanism to be used for uplink transmission.

[0083] Optionally, the base station stores a correspondence relationship between uplink transmission types and channel detection mechanisms, and the base station determines a channel detection mechanism corresponding to the current uplink transmission type based on the correspondence relationship, and further generates notification information.

[0084] The scheduling signaling dynamically configures information such as the transmission type of the uplink transmission, the time-frequency resource to be used, and the period to be used.

[0085] In this embodiment, the scheduling signaling further carries notification information. Optionally, the notification information has a fixed or configurable information domain length. For example, if a terminal supports four types of channel detection mechanisms, namely, Cat. 1, Cat. 2, Cat. 3, and Cat. 4, in an unlicensed frequency band, the terminal can use 2-bit indication information to indicate the channel detection mechanism, as shown in Table 1 below. [Table 1-3]

[0086] Optionally, the correspondence shown in Table 1 above may be pre-determined or pre-configured. In the embodiment of the present application, pre-determined refers to being pre-defined by a communication protocol, and pre-configured refers to being pre-configured from the base station to the terminal.

[0087] In step 404c, the base station sends scheduling signaling to the terminal.

[0088] The scheduling signaling may be Downlink Control Information (DCI), and the scheduling signaling is transmitted before the uplink data, as shown in FIG.

[0089] In step 406c, the terminal receives scheduling signaling sent from the base station.

[0090] In step 408c, the terminal determines a channel detection mechanism to be used for uplink transmission based on the notification information of the scheduling signaling.

[0091] As described above, the method provided by this embodiment reduces the number of signaling interactions required between the base station and the terminal by storing and transmitting notification information in scheduling signaling, thereby improving communication efficiency between the base station and the terminal.

[0092] In an optional embodiment based on the above embodiment of FIG. 4, FIG. 5, FIG. 6 or FIG. 7, if the channel occupation time corresponding to uplink transmission is initiated by the base station, when the terminal performs uplink transmission during the channel occupation time initiated by the base station, the base station sends notification information to the terminal, and the terminal determines a channel detection mechanism based on the notification information.

[0093] Optionally, "initiating" refers to the act of performing LBT by a wireless communication device and occupying channel resources after the LBT is successful. The wireless communication device may be a base station or a terminal.

[0094] In another alternative embodiment, if the channel occupancy time corresponding to the uplink transmission is initiated by the terminal, the terminal actively determines the channel detection mechanism. Figure 9 is a flowchart of a channel detection mechanism determination method provided by one exemplary embodiment of the present disclosure. The method may be performed by the terminal and includes the following steps:

[0095] In step 901, if the channel occupancy time corresponding to the uplink transmission is initiated by the terminal, the terminal determines the type of the uplink transmission.

[0096] The type of uplink transmission includes a type of uplink control signaling and / or a type of uplink data.

[0097] In step 902, the terminal determines a channel detection mechanism corresponding to the type according to the correspondence relationship.

[0098] Alternatively, the correspondence may be predefined by a communication protocol, or may be configured from the base station to the terminal. That is, the terminal determines the channel detection mechanism according to the type of uplink control signaling and / or uplink data that needs to be transmitted. For example, different types of uplink control signaling transmissions require different channel detection mechanisms.

[0099] Optionally, each channel detection mechanism has a corresponding channel access priority.

[0100] In addition, if at least two different types of uplink control signaling and / or uplink data need to be transmitted consecutively within a channel occupation time initiated by one terminal, channel detection is performed using the channel detection mechanism with the lowest channel access priority among the determined multiple channel detection mechanisms.

[0101] In the scenario of channel occupancy time initiated by the base station, and compared with the scenario of channel occupancy time initiated by the terminal, see FIG. 10. By the terminal itself determining the method of the channel detection mechanism, the terminal can occupy the uplink channel more quickly and perform uplink transmission, thereby reducing the delay of uplink transmission.

[0102] The following are examples of an apparatus provided by the present disclosure, which correspond to the above method examples. For technical details not described in detail in the apparatus examples, please refer to the above method examples and no further description will be given.

[0103] 11 illustrates a block diagram of a determination device for a channel detection mechanism provided by one exemplary embodiment of the present disclosure, which may be implemented as a part of a terminal. The determination device is applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, and the device comprises: a receiving module 1120 configured to receive notification information sent from the base station; and a determining module 1140 configured to determine a channel detection mechanism to be used for the uplink transmission based on the signaling information.

[0104] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; the receiving module 1120 is configured to receive a configuration signaling sent from the base station, the configuration signaling being a configuration signaling corresponding to the uplink transmission, and the notification information being held in the configuration signaling; Alternatively, the receiving module 1120 is configured to receive independent signaling transmitted from the base station, where the independent signaling is signaling different from the configuration signaling, and the notification information is held in the independent signaling.

[0105] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The receiving module 1120 is configured to receive scheduling signaling transmitted from the base station, the scheduling signaling being scheduling signaling corresponding to the uplink transmission, and the notification information being held at a predetermined position in the scheduling signaling.

[0106] In one alternative embodiment, the receiving module 1120 is configured to cause the terminal to receive notification information sent from the base station if the channel occupancy time corresponding to the uplink transmission is initiated by the base station.

[0107] 12 illustrates a block diagram of a determination device for a channel detection mechanism provided by one exemplary embodiment of the present disclosure, which may be implemented as a part of a terminal. The determination device is applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, and the device comprises: a first determining module 1220 configured to determine a type of the uplink transmission if the channel occupancy time corresponding to the uplink transmission is initiated by the terminal; and a second determining module 1240 configured to determine a channel detection mechanism corresponding to the type according to the correspondence relationship.

[0108] Optionally, the correspondence is predefined by a communication protocol, or the correspondence is configured from a base station to the terminal.

[0109] Optionally, the second determination module 1240 is further configured to perform channel detection using a channel detection mechanism with the lowest channel access priority among the determined plurality of channel detection mechanisms when at least two different types of uplink control signaling and / or uplink data need to be transmitted consecutively within a channel occupancy time initiated by one terminal.

[0110] 13 illustrates a block diagram of a determination device for a channel detection mechanism provided by one exemplary embodiment of the present disclosure, which may be implemented as part of a base station. The determination device is applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, and includes: a generating module 1320 configured to generate signaling information, the signaling information indicating a channel detection mechanism to be used for the uplink transmission; a transmitting module 1340 configured to transmit the signaling information to a terminal and to determine a channel detection mechanism to be used for the uplink transmission.

[0111] In one alternative embodiment, the uplink transmission is a configuration type uplink transmission; The transmitting module 1340 is configured to transmit a configuration signaling to the terminal, the configuration signaling being a configuration signaling corresponding to the uplink transmission, and the notification information being carried in the configuration signaling; Alternatively, the sending module 1340 is configured to send independent signaling to the terminal, where the independent signaling is signaling different from the configuration signaling, and the independent signaling carries the notification information.

[0112] In one alternative embodiment, the uplink transmission is a scheduled type uplink transmission; The sending module 1340 is configured to send a scheduling signaling to the terminal, the scheduling signaling being a scheduling signaling corresponding to the uplink transmission, and the notification information being held at a predetermined position of the scheduling signaling;

[0113] In one alternative embodiment, the sending module 1340 is configured to send the notification information to the terminal when the channel occupancy time corresponding to the uplink transmission is initiated by a base station.

[0114] FIG. 14 shows a schematic block diagram of a wireless communication device provided by one exemplary embodiment of the present disclosure, which may be a terminal or a base station, and includes a processor 101, a receiver 102, a transmitter 103, a memory 104 and a path 105.

[0115] The processor 101 includes one or more processing kernels, and the processor 101 executes software programs and modules to perform various functional applications and information processing.

[0116] The receiver 102 and the transmitter 103 can be implemented as one communication component, which may be one communication chip.

[0117] The memory 104 is connected to the processor 101 by a path 105 .

[0118] The memory 104 stores at least one instruction, which the processor executes to implement the various steps in the method embodiments described above.

[0119] Additionally, memory 104 may be implemented by any type of volatile or non-volatile storage device or combination thereof, including, but not limited to, magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0120] Exemplary embodiments further provide a non-transitory computer-readable storage medium containing instructions, such as a memory containing instructions, which may be executed by a processor to complete various steps in the method embodiments. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, or an optical data storage device.

[0121] A non-transitory computer-readable storage medium, the instructions of which, when executed by a processor, enable the determination method of the channel detection mechanism to be performed.

[0122] The numbers of the embodiments of the present disclosure above are for illustrative purposes only and do not represent the superiority or inferiority of the embodiments.

[0123] It is understood by those skilled in the art that all or part of the steps in the above embodiments may be performed by hardware, and can be completed by a program instructing the relevant hardware, and the program may be stored in a computer-readable storage medium such as a read-only memory, a magnetic disk, or an optical disk.

[0124] The above contents are merely preferred embodiments of the present disclosure and do not limit the present disclosure. As long as they do not deviate from the spirit and principles of the present disclosure, any modifications, equivalent replacements, improvements, etc., made shall be included within the protection scope of the present disclosure.

Claims

1. 1. A method for determining a channel detection mechanism applied to a scenario in which uplink transmission is performed using an uplink channel in an unlicensed spectrum, the method comprising: receiving, by the terminal, independent signaling including notification information transmitted from the base station, and determining a channel detection mechanism to be used for uplink transmission based on the notification information included in the independent signaling; If the channel occupancy time corresponding to the uplink transmission is initiated by the terminal, the terminal determines a type of the uplink transmission; and a step of determining, by the terminal according to a correspondence relationship, a first channel detection mechanism corresponding to the first uplink transmission type and a second channel detection mechanism corresponding to the second uplink transmission type, when at least two different uplink transmission types need to be transmitted consecutively within a channel occupation time initiated by one of the terminals, and the at least two different uplink transmission types include a first uplink transmission type that is a type of uplink control signaling and a second uplink transmission type that is a type of uplink data, wherein the first channel detection mechanism and the second channel detection mechanism are, respectively, one of a mechanism that does not include Listen Before Talk (LBT), an LBT mechanism that does not include a random backoff process, an LBT mechanism with a fixed contention window size (CWS) and a random backoff type LBT mechanism with a variable CWS, and a channel detection mechanism based on a frame structure, and the first channel detection mechanism and the second channel detection mechanism are different; the terminal determining, as a channel detection mechanism to be used during the channel occupation time, one of the first channel detection mechanism and the second channel detection mechanism that has the lowest channel access priority. A method for determining a channel detection mechanism, comprising:

2. the correspondence relationship is predefined by a communication protocol; or The correspondence relationship is configured from the base station to the terminal.

2. The method of claim 1 .

3. 1. An apparatus for determining a channel detection mechanism applied to a terminal that performs uplink transmission using an uplink channel of an unlicensed spectrum, comprising: a first determination module configured to receive independent signaling including notification information transmitted from a base station, determine a channel detection mechanism to be used for uplink transmission based on the notification information included in the independent signaling, and determine a type of the uplink transmission if a channel occupation time corresponding to the uplink transmission is initiated by the terminal; a second determination module for determining, according to a correspondence relationship, a first channel detection mechanism corresponding to the first uplink transmission type and a second channel detection mechanism corresponding to the second uplink transmission type, when at least two different uplink transmission types need to be transmitted consecutively within a channel occupancy time initiated by one of the terminals, and the at least two different uplink transmission types include a first uplink transmission type that is a type of uplink control signaling and a second uplink transmission type that is a type of uplink data, wherein the first channel detection mechanism and the second channel detection mechanism are one of a mechanism that does not include Listen Before Talk (LBT), an LBT mechanism that does not include a random backoff process, an LBT mechanism with a fixed contention window size (CWS) and a random backoff type LBT mechanism with a variable CWS, and a channel detection mechanism based on a frame structure, and the first channel detection mechanism and the second channel detection mechanism are different; determining, from among the first channel detection mechanism and the second channel detection mechanism, a channel detection mechanism having the lowest channel access priority as a channel detection mechanism to be used during the channel occupation time; 10. An apparatus for determining a channel detection mechanism, comprising:

4. the correspondence relationship is predefined by a communication protocol; or The correspondence relationship is configured from the base station to the terminal.

4. The device according to claim 3.

5. A terminal, a processor; a transceiver coupled to the processor; a memory that stores instructions executable by the processor; The processor is configured to load and execute the executable instructions to implement the method for determining a channel detection mechanism according to any one of claims 1 to 2. A terminal characterized by:

6. A computer-readable storage medium, comprising: The computer-readable storage medium stores at least one instruction, at least one program, code set, or instruction set, and the at least one instruction, the at least one program, code set, or instruction set is loaded and executed by a processor to implement the method for determining a channel detection mechanism according to any one of claims 1 and 2. A computer-readable storage medium comprising:

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