CN109286988B

CN109286988B - Transmission method and device under unlicensed frequency band and computer-readable storage medium

Info

Publication number: CN109286988B
Application number: CN201710592046.0A
Authority: CN
Inventors: 姜蕾
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-07-19
Filing date: 2017-07-19
Publication date: 2021-01-08
Anticipated expiration: 2037-07-19
Also published as: CN109286988A; WO2019015456A1

Abstract

The invention discloses a transmission method, equipment and a computer readable storage medium under an unauthorized frequency band, wherein the method comprises the following steps: the method comprises the steps that first equipment monitors a transmission channel of an unauthorized frequency band to obtain a channel monitoring result; when the channel interception result indicates that the target channel is occupied, detecting whether the first equipment and second equipment occupying the target channel belong to the same wireless access technology to obtain a detection result; and determining whether the target information is transmitted on the target channel or not according to the detection result. When the first device monitors that a target channel under an unauthorized frequency band is busy, the first device further detects whether the first device and a second device occupying the target channel belong to the same wireless access technology to obtain a detection result, and further determines whether the first device and the second device multiplex the target channel according to the detection result. That is, even if a device is detected to transmit on the target channel, other devices have an opportunity to multiplex the target channel to improve resource utilization.

Description

Transmission method and device under unlicensed frequency band and computer-readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method and device in an unlicensed frequency band, and a computer-readable storage medium.

Background

In a Long Term Evolution (LTE) system and a future fifth Generation (5G, 5Generation) communication system, or referred to as a New Radio (NR) system, an unlicensed band (unlicensed band) may be used as a supplement to a licensed band (licensed band), so as to help an operator expand the capacity of services. In order to keep the deployment in the New air interface (NR) system consistent and maximize the unlicensed access based on the NR system as much as possible, the unlicensed frequency band may operate in the 5GHz, 37GHz, and 60GHz frequency bands. The large bandwidth (80MHz or 100MHz) of the unlicensed band can reduce implementation complexity of a base station and a terminal (UE), but since the unlicensed band is shared by multiple Radio Access Technologies (RATs), such as WiFi, radar, Long Term Evolution system licensed Assisted Access (LTE-LAA), and the like, the unlicensed band must meet certain rules when being used to ensure that all devices can fairly use the resource, such as Listen Before Talk (LBT), Maximum Channel Occupancy Time (MCOT), and the like. The LBT mechanism requires that devices (such as network devices and terminals) listen to a frequency band before accessing an unlicensed frequency band, for example, a Clear Channel assignment (CCA/eCCA) is performed to listen to a Channel, when the Channel is empty, transmission may be performed, and if it is detected that other devices are transmitting, transmission in the frequency band cannot be performed.

Although the LBT mechanism ensures that the frequency band resources are shared fairly among the various RATs on the unlicensed frequency band, LBT also limits the range of power detection (energy detection) to which only one device can transmit information at the same time. Although the interference between different RATs is reduced by adopting the limiting mode, the frequency band resources in the range cannot be utilized by the equipment of the same RAT, and the resource utilization rate is low.

Disclosure of Invention

The embodiment of the invention provides a transmission method and device under an unlicensed frequency band and a computer readable storage medium, which aim to solve the problem of low resource utilization rate under the unlicensed frequency band in the prior art.

In a first aspect, an embodiment of the present invention provides a transmission method in an unlicensed frequency band, which is applied to a first device, and includes:

monitoring a transmission channel of an unauthorized frequency band to obtain a channel monitoring result;

when the channel interception result indicates that the target channel is occupied, detecting whether the first equipment and second equipment occupying the target channel belong to the same Radio Access Technology (RAT) or not to obtain a detection result;

and determining whether the target information is transmitted on the target channel or not according to the detection result.

In a second aspect, an embodiment of the present invention further provides an apparatus, which is applied to a first apparatus, and includes:

the first interception module is used for intercepting a transmission channel of an unauthorized frequency band to obtain a channel interception result;

the first detection module is used for detecting whether the first equipment and second equipment occupying the target channel belong to the same Radio Access Technology (RAT) or not when the channel interception result indicates that the target channel is occupied so as to obtain a detection result;

and the first processing module is used for determining whether the target information is transmitted on the target channel or not according to the detection result.

In a third aspect, an embodiment of the present invention provides a network device, where the network device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the transmission method in the unlicensed frequency band are implemented.

In a fourth aspect, an embodiment of the present invention provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and being executable on the processor, and when the computer program is executed by the processor, the method for transmitting in an unlicensed frequency band is implemented as described above.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps of the transmission method in the unlicensed frequency band, as described above.

In a sixth aspect, an embodiment of the present invention further provides a transmission method in an unlicensed frequency band, where the transmission method is applied to a second device, and the method includes:

when the channel interception result indicates that the target channel is idle, transmitting RAT indication information for indicating the RAT type of the second equipment on the target channel;

wherein, the RAT indication information includes: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS.

In a seventh aspect, an embodiment of the present invention provides an apparatus, which is applied to a second apparatus, and includes:

the second interception module is used for intercepting a transmission channel of an unauthorized frequency band to obtain a channel interception result;

a transmission module, configured to transmit RAT indication information indicating a RAT type of a second device on a target channel when a channel listening result indicates that the target channel is idle;

In an eighth aspect, an embodiment of the present invention provides a network device, where the network device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the transmission method in the unlicensed frequency band are implemented.

In a ninth aspect, an embodiment of the present invention provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and being executable on the processor, and when the computer program is executed by the processor, the method for transmitting in an unlicensed frequency band is implemented as described above.

In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps of the transmission method in the unlicensed frequency band, as described above.

In this way, according to the transmission method and device in the unlicensed frequency band and the computer-readable storage medium of the embodiments of the present invention, when the first device monitors that the target channel in the unlicensed frequency band is busy, it is further detected whether the first device and the second device occupying the target channel belong to the same radio access technology, a detection result is obtained, and it is further determined whether the first device and the second device reuse the target channel according to the detection result. That is, even if a device is detected to transmit on the target channel, other devices have an opportunity to multiplex the target channel to improve resource utilization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic flow chart illustrating a transmission method in an unlicensed frequency band at a first device side according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating resource mapping for multiple cells transmitting on an unlicensed frequency band by the same operator according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating resource mapping for multiple cells transmitting on an unlicensed frequency band under different operators according to an embodiment of the present invention;

FIG. 4 shows a block schematic diagram of a first apparatus of an embodiment of the invention;

FIG. 5 shows a block diagram of a network device of an embodiment of the invention;

FIG. 6 shows a block diagram of a terminal of an embodiment of the invention;

fig. 7 is a flowchart illustrating a transmission method in an unlicensed frequency band at a second device side according to an embodiment of the present invention;

fig. 8 shows a block schematic diagram of a second device according to an embodiment of the invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The transmission method under the unlicensed frequency band of the embodiment of the invention is applied to the first device, wherein the first device can be a network device or a terminal. As shown in fig. 1, the transmission method in the unlicensed frequency band according to the embodiment of the present invention specifically includes the following steps:

step 11: and intercepting the transmission channel of the unauthorized frequency band to obtain a channel interception result.

In a New Radio resource Assisted Access (NR-LAA) system, when a network device or a terminal transmits data information, it needs to listen first and then say to listen to a transmission channel, and when it is sensed that a target channel is idle, the target information is transmitted through the target channel. The network device and the terminal may listen to the transmission channel of the unlicensed frequency band through the CCA/eCCA, so as to determine an initial transmission position of the target channel in the current time domain transmission unit. The time domain transmission unit is a time domain subframe or a time slot.

Specifically, step 11 includes the steps of: when target information needs to be transmitted, monitoring a target channel of an unauthorized frequency band; if the total power of signals on the target channel is lower than a preset threshold value, obtaining a channel interception result indicating that the target channel is in an idle state; and if the total power of the signals on the target channel exceeds a preset threshold value, obtaining a channel interception result indicating that the target channel is in an occupied state.

That is, when the network device or the terminal has the target information to be transmitted, the channel detection is performed on the target channel in the unlicensed frequency band, and if the total signal power of the target channel is detected to be lower than the power threshold value X_ThreshDetermining that the target channel is in an idle state, and if the total signal power of the target channel exceeds a power threshold value X_ThreshThen, it is determined that the target channel is in an occupied state, i.e., other network devices or terminals occupy the target channel.

Step 12: and when the channel interception result indicates that the target channel is occupied, detecting whether the first equipment and second equipment occupying the target channel belong to the same Radio Access Technology (RAT) or not to obtain a detection result.

In order to improve the resource utilization rate on the unlicensed frequency band, when a channel interception result occupied by a target channel is obtained by intercepting the target channel, whether a first device and a second device occupying the target channel belong to the same RAT needs to be further detected, and if the second device occupying the target channel to send information and the first device doing LBT belong to the same RAT, the target channel has a condition of being multiplexed by the first device and the second device. In order to detect whether the second device currently occupying the target channel belongs to the same RAT as the first device doing LBT, additional signal detection (signal detection) is required. Since the first device and the second device may be any one of a network device and a terminal, the signal detection includes detection between a network device-network device, a network device-terminal, a terminal-network device, and a terminal-terminal. Taking the first device as the network device as an example, the network device needs to perform additional signal detection between the network device and the network device, and between the network device and the terminal. Specifically, the signal detection between the network device and the network device is directed at a scenario that adjacent cells are both downlink, and when the network device monitors that a target channel is occupied, it further detects whether a network device of the same RAT is transmitting. The signal detection between the network equipment and the terminal aims at the scene of uplink and downlink asynchronization of adjacent cells, and when the network equipment monitors that a target channel is occupied, the network equipment further detects whether the terminal of the same RAT is transmitting. Taking the first device as an example, the terminal needs to perform terminal-network device and terminal-terminal detection. Specifically, signal detection between the terminal and the terminal aims at a situation that adjacent cells are simultaneously uplink, and when the terminal monitors that a target channel is occupied, the terminal further detects whether the terminal of the same RAT is transmitting. The terminal-network equipment directly detects the signal of your aiming at the scene that the adjacent cells are asynchronous up and down, and when the terminal monitors that the target channel is occupied, the terminal further detects whether the network equipment with the same RAT is transmitting.

Wherein the step 12 specifically comprises: detecting RAT indication information indicating a RAT type of a second device; when the RAT type of the second equipment indicated by the RAT indication information is the same as that of the first equipment, obtaining a first detection result; and when the RAT type of the second equipment indicated by the RAT indication information is different from the RAT type of the first equipment, obtaining a second detection result. That is, the first detection result is used to indicate that the first device and the second device belong to the same RAT, and the second detection result is used to indicate that the first device and the second device belong to different RATs.

Wherein, the RAT indication information includes: at least one of control Information carried by a Physical Downlink Control Channel (PDCCH), a Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), and a Sounding Reference Signal (SRS). That is, the signal for carrying RAT indication information for additional signal detection may be PDCCH, DMRS, CSI-RS, SRS, etc. For example, when a signal carrying RAT indication information is carried through a PDCCH, the PDCCH needs to carry RAT type information, and a network device or a terminal performing LBT detects the RAT type information at a transmission position of the PDCCH.

Further, the control information carried by the physical downlink control channel PDCCH includes: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information. That is, the RAT indication information may be explicitly carried in DCI information or group common DCI information, where the DCI may be compact downlink control indication information (compact DCI), the compact DCI may be a DCI format (DCI format) added in the NR system, and the DCI format 1C in the LTE system may also be reused. When the DCI format 1C is used, it may be distinguished by a new Radio Network Temporary Identity (RNTI), or the remaining bits of the DCI format 1C scrambled by the CC-RNTI may be used.

In addition, the RAT indication information can also be implicitly carried in the DMRS and the CSI-RS, and the network equipment or the terminal which performs LBT needs to detect the position of the DMRS or the CSI-RS. The demodulation reference signal DMRS comprises: at least one of a preamble demodulation reference signal, an additional demodulation reference signal (additional DMRS), and an interference measured modulation reference signal. Wherein different DMRSs are transmitted at different locations.

Similarly, the CSI-RS includes: at least one of a beam management (beam management) CSI-RS, a channel state information CSI measured CSI-RS, a mobility management CSI-RS, and an interference measurement CSI-RS. Wherein different CSI-RSs are transmitted at different locations.

Here, the RAT indication information is implicitly carried in the DMRS and CSI-RS, and if the network device or the terminal performing LBT can detect that the adjacent network device occupying the target channel transmits the DMRS or the CSI-RS, it indicates that the network device performing LBT and the adjacent network device occupying the target channel belong to the same RAT.

That is, the neighboring cells need to exchange information of DMRS and CSI-RS, and corresponding numerical configuration (Numerology) information in order for the network device to determine the location of additional signal detection. The network device may also issue the relevant information to the terminal through the PDCCH, so that the terminal can determine the position of the additional signal detection.

Further, the RAT indication information may also be carried in the SRS, the SRS is sent by the terminal occupying the target channel, the network device or the terminal performing the LBT performs detection at the corresponding SRS position, and if the SRS is detected, it indicates that the terminal occupying the target channel and the network device or the terminal performing the LBT belong to the same RAT. It is worth pointing out that the neighboring cells need to exchange SRS information and corresponding Numerology information in order for the network device or terminal doing LBT to determine the location of additional signal detection.

Taking PDDCH carrying RAT indication information as an example, when the RAT indication information is control information carried by PDCCH, the step of detecting RAT indication information for indicating the RAT type of the second device includes: and detecting a Physical Downlink Control Channel (PDCCH) of a second device occupying a target channel to acquire RAT indication information carried by the PDCCH and used for indicating the RAT type of the second device.

Step 13: and determining whether the target information is transmitted on the target channel or not according to the detection result.

Wherein, step 13 specifically comprises: and when the detection result indicates that the first device and the second device belong to the same RAT, if the target channel shared by different Radio Access Technologies (RATs) does not exist in the continuous time period, transmitting the target information on the target channel. That is, when the first device detects the total power E of the signal on the target channel of the unlicensed band_LBTExceeds a power threshold value X_ThreshThe target channel is preliminarily detected as busy. In order to improve the resource utilization rate, the first device needs to perform the above-mentioned additional signal detection, if it is detected that the second device occupying the target channel and the first device are devices of the same RAT, and it is determined according to a rule (relationship) that the devices of other RATs will not share the target channel in the unlicensed frequency band for a long time, the target channel may be considered as idle, and the first device may transmit target information through the target channel, so as to implement multiplexing of the target channel by the first device and the second device.

Or, when the detection result indicates that the first device and the second device belong to the same RAT, if a difference value between the total power of the signals on the target channel and the total power of the signals on the target channel, which are in the same RAT as the second device, is lower than a preset threshold value, transmitting the target information on the target channel. That is, when the first device detects the total power E of the signal on the target channel of the unlicensed band_LBTExceeds a power threshold value X_ThreshThe target channel is preliminarily detected as busy. To improve the resource utilization, the first device needs to perform the above-mentioned additional operationsIf the second device occupying the target channel and the first device are devices of the same RAT, but it cannot be guaranteed according to a rule (regulation) that the devices of other RATs cannot share the target channel in the unlicensed frequency band for a long time, the total power E of the signal on the target channel is further detected_LBTTotal power E of signals transmitted by devices of the same RAT as the second device on the target channel_SingalIf E is different from_LBTAnd E_SingalIs more than X_ThreshDetermining the target channel is busy, if E_LBTAnd E_SingalIs less than X_ThreshThe target channel is determined to be idle, and the first device can transmit target information through the target channel to realize the multiplexing of the target channel by the first device and the second device.

Further, in order to avoid the interference problem between different operators, step 13 further includes: when the detection result indicates that the first device and the second device belong to the same operator, if the target channel shared by different Radio Access Technologies (RAT) does not exist in the continuous time period, transmitting target information on the target channel; or, when the detection result indicates that the first device and the second device belong to the same operator, if a difference between a total power of signals on the target channel and the second device in the same RAT is lower than a preset threshold, transmitting the target information on the target channel.

Specifically, as shown in fig. 2, two cells under the same operator (operator1) transmit on the unlicensed frequency band. Network equipment (base station 1, gbb 1) in the first cell (cell1) has data to transmit, and the gbb 1 performs LBT, and sends a reservation signal to reserve the channel when the channel is detected to be empty, as indicated by the arrow in fig. 2, until the next PDCCH location starts to transmit control information and data. When network equipment (base station 2, gNB2) in the second cell (cell2) has data to transmit, gNB2 starts LBT, the channel detection result is that the channel is in an occupied state, gNB2 continues monitoring, extra signal detection (signal detection) is performed at the PDCCH position of the first cell, the same operator ID (operator ID) is detected, namely gNB2 and gNB1 belong to the same operator,and it is determined according to the rules that there is no access of different RAT devices within the duration, at this time, the gNB2 may consider the target channel as empty, stop LBT, send an occupancy signal (occupancy signal) to occupy the channel, as indicated by the arrow in fig. 2, until the next PDCCH location starts to transmit control information and data; alternatively, the same operator identification (operator ID) is detected, i.e. the gNB2 belongs to the same operator as the gNB1, and E_LBTAnd E_SingalIs less than X_ThreshAt this time, the gNB2 may consider the target channel to be empty, stop LBT, and send an occupation signal (reservation signal) to occupy the channel, as indicated by the arrow in fig. 2, until the next PDCCH location starts to transmit control information and data.

As shown in fig. 3, a scenario in which multiple cells transmit in an unlicensed frequency band under different operators is shown. A first base station (gNB1) in a first cell (cell1) of a second operator (operator2) has data to transmit, and the gNB1 performs LBT, and sends an occupancy signal (occupancy signal) to occupy a channel when the channel is detected to be empty, as indicated by an arrow in fig. 3, until the next PDCCH location starts to transmit control information and data. When a second base station (gNB2) in a second cell (cell2) of a first operator (operator1) has data to transmit, the gNB2 starts LBT, the power detection target channel is busy, the gNB2 continues to monitor, the same operator identifier (home operator ID) cannot be detected at the position of each PDCCH of an adjacent cell (e.g., the first base station (gNB1) in the first cell1 of the first operator1 in the figure), LBT continues to be performed until a counter of LBT is 0 (counter N ═ 0), and monitoring is stopped, for example, the position indicated by an arrow in fig. 3.

It should be noted that, in the above description, how to detect whether two gnbs belong to the same operator, the above detection method is also applicable to whether two gnbs belong to the same RAT type, and whether the two gnbs belong to the same operator or RAT between network device and terminal, terminal and network device, and terminal.

In the transmission method in the unlicensed frequency band according to the embodiment of the present invention, when the first device monitors that a target channel in the unlicensed frequency band is busy, it is further detected whether the first device and a second device occupying the target channel belong to the same radio access technology, a detection result is obtained, and it is further determined whether the first device and the second device multiplex the target channel according to the detection result. That is, even if a device is detected to transmit on the target channel, other devices have an opportunity to multiplex the target channel to improve resource utilization.

The above embodiments respectively describe in detail the transmission methods in the unlicensed frequency band in different scenarios, and the following embodiments further describe the corresponding devices with reference to the accompanying drawings.

As shown in fig. 4, the device 400 according to the embodiment of the present invention can implement interception of a transmission channel in an unlicensed frequency band in the foregoing embodiment, and obtain a channel interception result; when the channel interception result indicates that the target channel is occupied, detecting whether the first equipment and second equipment occupying the target channel belong to the same Radio Access Technology (RAT) or not to obtain a detection result; according to the detection result, the details of the method for determining whether to transmit the target information on the target channel are determined, and the same effect is achieved, the apparatus 400 specifically includes the following functional modules:

a first listening module 410, configured to listen to a transmission channel in an unlicensed frequency band, so as to obtain a channel listening result;

a first detecting module 420, configured to detect, when the channel listening result indicates that the target channel is occupied, whether the first device and a second device occupying the target channel belong to the same RAT, and obtain a detection result;

and the processing module 430 is configured to determine whether to transmit the target information on the target channel according to the detection result.

Wherein the first detecting module 420 includes:

a first detecting unit, configured to detect RAT indication information indicating a RAT type of a second device;

the first processing unit is used for obtaining a first detection result when the RAT type of the second device indicated by the RAT indication information is the same as that of the first device;

and the second processing unit is used for obtaining a second detection result when the RAT type of the second device indicated by the RAT indication information is different from the RAT type of the first device.

Wherein, the processing module 430 comprises:

a first transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same RAT, transmit target information on a target channel if a target channel shared by RATs of different radio access technologies does not exist within a duration period; or,

and a second transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same RAT, transmit the target information on the target channel if a difference between a total power of signals on the target channel and a total power of signals on the target channel, which are in the same RAT as the second device, is lower than a preset threshold value.

Wherein, the first processing module 430 further includes:

a third transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same operator, transmit target information on a target channel if a target channel shared by different Radio Access Technologies (RATs) does not exist within a duration period; or,

and a fourth transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same operator, transmit target information on the target channel if a difference between a total power of signals on the target channel and the second device in the same RAT is lower than a preset threshold.

Wherein, first detecting element is specifically used for: and when the RAT indication information is control information carried by the PDCCH, detecting a Physical Downlink Control Channel (PDCCH) of the second equipment occupying the target channel to acquire the RAT indication information carried by the PDCCH and used for indicating the RAT type of the second equipment.

The control information carried by the physical downlink control channel PDCCH comprises: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information.

The demodulation reference signal DMRS comprises: at least one of a preamble demodulation reference signal, an extra demodulation reference signal, and an interference measured modulation reference signal.

Wherein the CSI-RS includes: at least one of a beam managed CSI-RS, a channel state information measured CSI-RS, a mobility managed CSI-RS, and an interference measured CSI-RS.

Wherein, the first listening module 410 includes:

the monitoring unit is used for monitoring a target channel of an unauthorized frequency band when target information needs to be transmitted;

the third processing unit is used for obtaining a channel interception result indicating that the target channel is in an idle state when the total power of signals intercepted on the target channel is lower than a preset threshold value;

and the fourth processing unit is used for obtaining a channel interception result indicating that the target channel is in an occupied state when the total power of the signals intercepted on the target channel exceeds a preset threshold value.

It is worth pointing out that, when the first device in the embodiment of the present invention monitors that the target channel in the unlicensed frequency band is busy, it further detects whether the first device and the second device occupying the target channel belong to the same radio access technology, obtains a detection result, and further determines whether the first device and the second device multiplex the target channel according to the detection result. That is, even if a device is detected to transmit on the target channel, other devices have an opportunity to multiplex the target channel to improve resource utilization.

In order to better achieve the above object, an embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the transmission method in the unlicensed frequency band are implemented. An embodiment of the present invention further provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the transmission method in the unlicensed frequency band are implemented as described above. An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the transmission method in the unlicensed frequency band are implemented as described above.

Specifically, the embodiment of the invention also provides a network device. As shown in fig. 5, the network device 500 includes: antenna 51, radio frequency device 52, baseband device 53. The antenna 51 is connected to a radio frequency device 52. In the uplink direction, the rf device 52 receives information via the antenna 51 and sends the received information to the baseband device 53 for processing. In the downlink direction, the baseband device 53 processes information to be transmitted and transmits the information to the radio frequency device 52, and the radio frequency device 52 processes the received information and transmits the processed information through the antenna 51.

The above-mentioned band processing means may be located in the baseband means 53, and the method performed by the network device in the above embodiment may be implemented in the baseband means 53, where the baseband means 53 includes a processor 54 and a memory 55.

The baseband device 53 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 5, wherein one chip, for example, the processor 54, is connected to the memory 55, and calls the program in the memory 55 to perform the network device operation shown in the above method embodiment.

The baseband device 53 may further include a network interface 56 for exchanging information with the radio frequency device 52, such as a Common Public Radio Interface (CPRI).

The processor may be a single processor or a combination of multiple processing elements, for example, the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement the methods performed by the network devices, for example: one or more microprocessors DSP, or one or more field programmable gate arrays FPGA, or the like. The storage element may be a memory or a combination of a plurality of storage elements.

The memory 55 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synchlronous DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 55 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Specifically, the network device of the embodiment of the present invention further includes: a computer program stored on the memory 55 and executable on the processor 54, the processor 54 calling the computer program in the memory 55 to perform the method performed by the modules shown in fig. 4.

In particular, the computer program when invoked by the processor 54 is operable to perform: monitoring a transmission channel of an unauthorized frequency band to obtain a channel monitoring result;

when the channel interception result indicates that a target channel is occupied, detecting whether the first equipment and second equipment occupying the target channel belong to the same Radio Access Technology (RAT) or not to obtain a detection result;

and determining whether target information is transmitted on the target channel or not according to the detection result.

In particular, the computer program when invoked by the processor 54 is operable to perform: detecting RAT indication information indicating a RAT type of a second device;

when the RAT type of the second device indicated by the RAT indication information is the same as that of the first device, obtaining a first detection result;

and when the RAT type of the second equipment indicated by the RAT indication information is different from the RAT type of the first equipment, obtaining a second detection result.

In particular, the computer program when invoked by the processor 54 is operable to perform: when the detection result indicates that the first device and the second device belong to the same RAT, if a target channel shared by different Radio Access Technologies (RATs) does not exist in a continuous time period, transmitting target information on the target channel; or,

and when the detection result indicates that the first device and the second device belong to the same RAT, if the difference value between the total power of signals on a target channel and the total power of signals on the target channel and the second device in the same RAT is lower than a preset threshold value, transmitting target information on the target channel.

In particular, the computer program when invoked by the processor 54 is operable to perform: when the detection result indicates that the first device and the second device belong to the same operator, if the target channel shared by different Radio Access Technologies (RAT) does not exist in the continuous time period, transmitting target information on the target channel; or,

and when the detection result indicates that the first device and the second device belong to the same operator, if the difference value between the total power of the signals on the target channel and the total power of the signals of the same RAT as the second device on the target channel is lower than a preset threshold value, transmitting target information on the target channel.

Wherein the RAT indication information includes: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS.

Wherein, when the RAT indication information is control information carried by PDCCH, the computer program when invoked by the processor 54 may be configured to perform: and detecting a Physical Downlink Control Channel (PDCCH) of a second device occupying the target channel to acquire RAT indication information carried by the PDCCH and used for indicating the RAT type of the second device.

The control information carried by the physical downlink control channel PDCCH includes: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information.

Wherein the demodulation reference signal DMRS comprises: at least one of a preamble demodulation reference signal, an extra demodulation reference signal, and an interference measured modulation reference signal.

Further, the computer program when invoked by the processor 54 is operable to perform: when target information needs to be transmitted, monitoring a target channel of an unauthorized frequency band;

if the total power of signals on the target channel is lower than a preset threshold value, obtaining a channel interception result indicating that the target channel is in an idle state;

and if the total power of the signals on the target channel exceeds a preset threshold value, obtaining a channel interception result indicating that the target channel is in an occupied state.

The network device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, or the like, which is not limited herein.

When the network device of the embodiment of the invention monitors that the target channel under the unauthorized frequency band is busy, the network device further detects whether the network device and other network devices or terminals occupying the target channel belong to the same wireless access technology to obtain a detection result, and further determines whether the network device and other devices or terminals multiplex the target channel according to the detection result. That is, even if it is detected that other network devices or terminals transmit on the target channel, the network device has an opportunity to multiplex the target channel to improve resource utilization.

In order to better achieve the above object, an embodiment of the present invention further provides a terminal, and specifically, fig. 6 is a block diagram of a terminal 600 according to another embodiment of the present invention, where the terminal shown in fig. 6 includes: at least one processor 601, memory 602, user interface 603, and network interface 604. The various components in terminal 600 are coupled together by a bus system 605. It is understood that the bus system 605 is used to enable communications among the components. The bus system 605 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 605 in fig. 6.

The user interface 603 may include, among other things, a display or a pointing device (e.g., a touch pad or touch screen, etc.).

It will be appreciated that the memory 602 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 602 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 602 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 6021 and application programs 6022.

The operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application program 6022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like, and is used to implement various application services. A program implementing the method of an embodiment of the invention can be included in the application program 6022.

In an embodiment of the present invention, the terminal 600 further includes: a computer program stored on the memory 602 and executable on the processor 601, in particular a computer program in the application program 6022, which when executed by the processor 601, performs the steps of: monitoring a transmission channel of an unauthorized frequency band to obtain a channel monitoring result;

The method disclosed by the above-mentioned embodiment of the present invention can be applied to the processor 601, or implemented by the processor 601. The processor 601 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 601. The Processor 601 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the method in combination with the hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

In particular, the computer program, when executed by the processor 601, may further implement the steps of: detecting RAT indication information indicating a RAT type of a second device;

when the RAT type of the second equipment indicated by the RAT indication information is the same as that of the first equipment, obtaining a first detection result;

In particular, the computer program, when executed by the processor 601, may further implement the steps of: when the detection result indicates that the first device and the second device belong to the same RAT, if the target channel shared by different Radio Access Technologies (RAT) does not exist in the continuous time period, transmitting target information on the target channel; or,

and when the detection result indicates that the first device and the second device belong to the same RAT, if the difference value between the total power of the signals on the target channel and the total power of the signals on the target channel of the same RAT as the second device is lower than a preset threshold value, transmitting target information on the target channel.

In particular, the computer program, when executed by the processor 601, may further implement the steps of: when the detection result indicates that the first device and the second device belong to the same operator, if the target channel shared by different Radio Access Technologies (RAT) does not exist in the continuous time period, transmitting target information on the target channel; or,

Specifically, the RAT indication information includes: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS.

Specifically, when the RAT indication information is control information carried by the PDCCH, the computer program when executed by the processor 601 may further implement the following steps: and detecting a Physical Downlink Control Channel (PDCCH) of the second equipment occupying the target channel to acquire RAT indication information which is carried by the PDCCH and used for indicating the RAT type of the second equipment.

Specifically, the control information carried by the physical downlink control channel PDCCH includes: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information.

Specifically, the demodulation reference signal DMRS includes: at least one of a preamble demodulation reference signal, an extra demodulation reference signal, and an interference measured modulation reference signal.

In particular, the computer program, when executed by the processor 601, may further implement the steps of: the channel state information reference signal CSI-RS includes: at least one of a beam managed CSI-RS, a channel state information measured CSI-RS, a mobility managed CSI-RS, and an interference measured CSI-RS.

In particular, the computer program, when executed by the processor 601, may further implement the steps of: when target information needs to be transmitted, monitoring a target channel of an unauthorized frequency band;

A terminal may be a wireless terminal or a wired terminal, and a wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

When the terminal of the embodiment of the invention monitors that the target channel under the unauthorized frequency band is busy, the terminal further detects whether the terminal and other terminals or base stations occupying the target channel belong to the same wireless access technology to obtain a detection result, and further determines whether the terminal and other terminals or base stations multiplex the target channel according to the detection result. That is, even if it is detected that there is another terminal or base station transmitting on the target channel, the terminal has an opportunity to multiplex the target channel to improve the resource utilization.

The above embodiment describes the transmission method in the unlicensed frequency band of the present invention from the first device side, and the following embodiment further describes the transmission method in the unlicensed frequency band of the second device side with reference to the accompanying drawings.

As shown in fig. 7, the transmission method in the unlicensed frequency band according to the embodiment of the present invention is applied to a second device, where the second device may be a network device or a terminal, and the method specifically includes the following steps:

step 71: and intercepting the transmission channel of the unauthorized frequency band to obtain a channel interception result.

In a New Radio resource Assisted Access (NR-LAA) system, when a network device or a terminal transmits data information, it needs to listen first and then say to listen to a transmission channel, and when it is sensed that a target channel is idle, the target information is transmitted through the target channel. Specifically, step 71 includes: when target information needs to be transmittedMonitoring a target channel of an unauthorized frequency band; if the total power of signals on the target channel is lower than a preset threshold value, obtaining a channel interception result indicating that the target channel is in an idle state; and if the total power of the signals on the target channel exceeds a preset threshold value, obtaining a channel interception result indicating that the target channel is in an occupied state. That is, when the network device or the terminal has the target information to be transmitted, the channel detection is performed on the target channel in the unlicensed frequency band, and if the total signal power of the target channel is detected to be lower than the power threshold value X_ThreshDetermining that the target channel is in an idle state, and if the total signal power of the target channel exceeds a power threshold value X_ThreshThen, it is determined that the target channel is in an occupied state, i.e., other network devices or terminals occupy the target channel.

Step 72: transmitting RAT indication information indicating a RAT type of the second device on the target channel when the channel sensing result indicates that the target channel is idle.

Wherein the RAT indication information is used for indicating a RAT type of the second device, and the RAT indication information includes: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS. That is, the signal for carrying RAT indication information for additional signal detection may be PDCCH, DMRS, CSI-RS, SRS, etc. For example, when a signal carrying RAT indication information is carried through a PDCCH, the PDCCH needs to carry RAT type information, and a network device or a terminal performing LBT detects the RAT type information at a transmission position of the PDCCH.

In the transmission method in the unlicensed band according to the embodiment of the present invention, the second device listens to a target channel of the unlicensed band channel, and transmits the target information and RAT indication information indicating a RAT type of the second device through the target channel when it is monitored that the target channel is idle, so as to facilitate additional signal detection of the first device for LBT in the subsequent process.

The foregoing embodiments describe transmission methods in unlicensed frequency bands in different scenarios, and further describe devices corresponding to the transmission methods with reference to the accompanying drawings.

As shown in fig. 8, the device 800 according to the embodiment of the present invention can implement interception of a transmission channel in an unlicensed frequency band in the foregoing embodiment, and obtain a channel interception result; when the channel interception result indicates that the target channel is idle, transmitting details of a RAT indication information method for indicating the RAT type of the second device on the target channel, and achieving the same effect, wherein the RAT indication information includes: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS. The apparatus 800 specifically includes the following functional modules:

the second listening module 810 is configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result;

a transmitting module 820, configured to transmit RAT indication information indicating a RAT type of the second device on the target channel when the channel sensing result indicates that the target channel is idle;

It is worth pointing out that, after occupying the target channel, the device according to the embodiment of the present invention transmits the target information and the RAT indication information indicating the RAT type of the device itself through the target channel, so as to perform additional signal detection of the first device for LBT subsequently.

It should be noted that the division of the modules of the first device and the second device is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A transmission method in an unlicensed frequency band is applied to a first device, and the method includes:

determining whether target information is transmitted on the target channel or not according to the detection result;

the step of determining whether to transmit the target information on the target channel according to the detection result includes:

when the detection result indicates that the first device and the second device belong to the same RAT, if it is determined according to a supervision rule that a target channel shared by different Radio Access Technologies (RATs) does not exist in a continuous time period, transmitting target information on the target channel; or,

when the detection result indicates that the first device and the second device belong to the same RAT, if the difference value between the total power of signals on a target channel and the total power of signals on the target channel, which are in the same RAT as the second device, is lower than a preset threshold value, transmitting target information on the target channel;

or,

when the detection result indicates that the first device and the second device belong to the same operator, if it is determined according to a supervision rule that a target channel shared by different Radio Access Technologies (RAT) does not exist in a continuous time period, transmitting target information on the target channel; or,

and when the detection result indicates that the first device and the second device belong to the same operator, transmitting target information on a target channel if the difference value between the total power of signals on the target channel and the second device in the same RAT is lower than a preset threshold value.

2. The method of claim 1, wherein the step of detecting whether the first device and the second device occupying the target channel belong to a same RAT to obtain a detection result comprises:

detecting RAT indication information indicating a RAT type of a second device;

3. The method of claim 2, wherein the RAT indication information comprises: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS.

4. The method according to claim 3, wherein when the RAT indication information is control information carried in a PDCCH, the detecting RAT indication information indicating a RAT type of a second device comprises:

and detecting a Physical Downlink Control Channel (PDCCH) of a second device occupying the target channel to acquire RAT indication information carried by the PDCCH and used for indicating the RAT type of the second device.

5. The transmission method according to claim 4, wherein the control information carried by the physical downlink control channel PDCCH includes: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information.

6. The transmission method in the unlicensed frequency band according to claim 3, wherein the DMRS comprises: at least one of a preamble demodulation reference signal, an extra demodulation reference signal, and an interference measured modulation reference signal.

7. The method according to claim 3, wherein the CSI-RS comprises: at least one of a beam managed CSI-RS, a channel state information measured CSI-RS, a mobility managed CSI-RS, and an interference measured CSI-RS.

8. The method according to claim 1, wherein the step of listening to the transmission channel in the unlicensed frequency band to obtain a channel listening result comprises:

when target information needs to be transmitted, monitoring a target channel of an unauthorized frequency band;

9. An apparatus, applied to a first apparatus, comprising:

a first detection module, configured to detect, when the channel sensing result indicates that a target channel is occupied, whether the first device and a second device occupying the target channel belong to a same radio access technology RAT, and obtain a detection result;

the processing module is used for determining whether target information is transmitted on the target channel or not according to the detection result;

the processing module comprises:

a first transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same RAT, transmit target information on a target channel if it is determined, according to a supervision rule, that a target channel does not exist in a persistent time period and is shared by different Radio Access Technologies (RATs); or,

a second transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same RAT, transmit target information on a target channel if a difference between a total power of signals on the target channel and a total power of signals on the target channel, which are of the same RAT as the second device, is lower than a preset threshold;

or,

a third transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same operator, transmit target information on a target channel if it is determined, according to a regulatory rule, that a target channel does not exist in a persistent time period and shared by different Radio Access Technologies (RATs); or,

a fourth transmission unit, configured to, when the detection result indicates that the first device and the second device belong to the same operator, transmit target information on a target channel if a difference between a total power of signals on the target channel and of the same RAT as the second device is lower than a preset threshold.

10. The apparatus of claim 9, wherein the first detection module comprises:

a first processing unit, configured to obtain a first detection result when the RAT type of the second device indicated by the RAT indication information is the same as the RAT type of the first device;

and a second processing unit, configured to obtain a second detection result when the RAT type of the second device indicated by the RAT indication information is different from the RAT type of the first device.

11. The apparatus of claim 10, wherein the RAT indication information comprises: at least one of control information carried by a physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS and a sounding reference signal SRS.

12. The apparatus according to claim 11, wherein the first detection unit is specifically configured to: and when the RAT indication information is control information carried by the PDCCH, detecting a Physical Downlink Control Channel (PDCCH) of second equipment occupying the target channel to acquire the RAT indication information carried by the PDCCH and used for indicating the RAT type of the second equipment.

13. The apparatus according to claim 12, wherein the control information carried by the physical downlink control channel PDCCH includes: at least one of Downlink Control Indication (DCI) information and group common Downlink Control Indication (DCI) information.

14. The apparatus of claim 11, wherein the demodulation reference signal (DMRS) comprises: at least one of a preamble demodulation reference signal, an extra demodulation reference signal, and an interference measured modulation reference signal.

15. The apparatus of claim 11, wherein the channel state information reference signal, CSI-RS, comprises: at least one of a beam managed CSI-RS, a channel state information measured CSI-RS, a mobility managed CSI-RS, and an interference measured CSI-RS.

16. The apparatus of claim 9, wherein the first listening module comprises:

17. A network device comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the processor executes the computer program to implement the steps of the method for transmission in the unlicensed frequency band according to any one of claims 1 to 8.

18. A terminal, characterized in that the terminal comprises a processor, a memory and a computer program stored on the memory and executable on the processor, and that the computer program, when executed by the processor, implements the steps in the transmission method in the unlicensed frequency band according to any one of claims 1 to 8.

19. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the transmission method in an unlicensed frequency band as claimed in any one of claims 1 to 8.