WO2019015456A1

WO2019015456A1 - Transmission method and device under unlicensed band, and computer-readable storage medium

Info

Publication number: WO2019015456A1
Application number: PCT/CN2018/093320
Authority: WO
Inventors: 姜蕾
Original assignee: 维沃移动通信有限公司
Priority date: 2017-07-19
Filing date: 2018-06-28
Publication date: 2019-01-24
Also published as: CN109286988A; CN109286988B

Abstract

Disclosed in the present disclosure are a transmission method and device under an unlicensed band and a computer-readable storage medium. The method comprises: a first device sensing a transmission channel of an unlicensed band to obtain a channel sensing result; if the channel sensing result indicates that a target channel is occupied, detecting whether the first device belongs to the same radio access technology of a second device which is occupying the target channel, to obtain a detection result; and determining, according to the detection result, whether to transmit target information on the target channel.

Description

Transmission method, device and computer readable storage medium in unlicensed frequency band

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201710592046.0, filed on Jan.

Technical field

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

Background technique

In the Long Term Evolution (LTE) system, and in the future 5th Generation (5G) communication system, or the New Radio (NR) system, the unlicensed band can be used as the unlicensed band. A supplemental band is added to help operators expand their services. For the same deployment in the new air interface system and to maximize the unauthorized access based on the NR system, the unlicensed band can operate in the 5 GHz, 37 GHz and 60 GHz bands. The large bandwidth (80MHz or 100MHz) of the unlicensed band can reduce the implementation complexity of the base station and the user equipment (UE), but since the unlicensed band is shared by multiple radio access technologies (RATs), for example, WiFi, radar, Long Term Evolution License Assisted Access (LTE-LAA), etc. Therefore, the unlicensed band must meet certain rules when used to ensure that all devices can use the resource fairly. For example, Listen Before Talk (LBT), Maximum Channel Occupancy Time (MCOT) and other rules. The LBT mechanism requires devices (such as network devices and terminals) to listen to the frequency band before accessing the unlicensed frequency band, such as Clear Channel Assessment (CCA/eCCA) to listen to the channel. If it is empty, it can be transmitted. If other devices are detected to be transmitting, this band cannot be used for transmission.

Although the LBT mechanism guarantees that the band resources are fairly shared among the various RATs in the unlicensed band, the LBT also limits the range of power detection, and only one device can transmit information at the same time. Although the restriction method reduces the interference between different RATs, the equipment resources of the same RAT cannot utilize the frequency band resources in the range, and the resource utilization rate is low.

Summary of the invention

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

Listening to the transmission channel of the unlicensed band to obtain a channel listening result;

When the channel listening result indicates that the target channel is occupied, detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtaining a detection result;

Based on the detection result, it is determined whether the target information is transmitted on the target channel.

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

a first intercepting module, configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result;

a first detecting module, configured to detect, when the channel listening result indicates that the target channel is occupied, whether the first device belongs to the same radio access technology RAT as the second device that occupies the target channel, and obtains a detection result;

The first processing module is configured to determine, according to the detection result, whether the target information is transmitted on the target channel.

In a third aspect, an embodiment of the present disclosure provides a network device, where the network device includes a processor, a memory, and a computer program stored on the memory and operable on the processor, and the processor implements the non-described as described above when executing the computer program. The steps in the transmission method under the licensed band.

In a fourth aspect, an embodiment of the present disclosure provides a terminal, where the terminal includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor to implement the unauthorized operation as described above. Steps in the transmission method under the band.

In a fifth aspect, an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, the step of implementing the transmission method in the unlicensed frequency band as described above .

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

Transmitting RAT indication information indicating a second device RAT type on the target channel when the channel listening result indicates that the target channel is idle;

The RAT indication information includes at least one of control information carried by the 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 disclosure provides a device, which is applied to a second device, and includes:

a second intercepting module, configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result;

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

In an eighth aspect, an embodiment of the present disclosure provides a network device, where the network device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and the processor implements the non-described as described above when executing the computer program. The steps in the transmission method under the licensed band.

In a ninth aspect, an embodiment of the present disclosure provides a terminal, where the terminal includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, implementing the unauthorized operation as described above Steps in the transmission method under the band.

According to a tenth aspect, an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, the step of implementing the transmission method in the unlicensed frequency band as described above .

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings to be used in the description of the embodiments of the present disclosure will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure. Other drawings may also be obtained from those of ordinary skill in the art based on these drawings without the inventive labor.

1 is a schematic flowchart of a transmission method in an unlicensed frequency band on a first device side in an embodiment of the present disclosure;

2 is a schematic diagram of resource mapping of multiple cells in the same carrier in the unlicensed frequency band in the embodiment of the present disclosure;

FIG. 3 is a schematic diagram of resource mapping for transmitting multiple cells in an unlicensed frequency band by different operators in the embodiment of the present disclosure;

4 is a block diagram showing a first device of an embodiment of the present disclosure;

Figure 5 is a block diagram showing a network device of an embodiment of the present disclosure;

Figure 6 shows a block diagram of a terminal of an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart diagram of a transmission method in an unlicensed frequency band on a second device side in an embodiment of the present disclosure;

FIG. 8 is a block diagram showing a second device of an embodiment of the present disclosure.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the data so used may be interchanged where appropriate, such that the embodiments of the present application described herein can be implemented, for example, in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The transmission method in the unlicensed frequency band of the embodiment of the present disclosure is applied to the first device, where the first device may be a network device or a terminal. As shown in FIG. 1, the transmission method in the non-authorized frequency band of the embodiment of the present disclosure specifically includes the following steps:

Step 11: Listening to the transmission channel of the unlicensed band to obtain a channel listening result.

In the New Radio License Assisted Access (NR-LAA) system, when a network device or terminal sends data information, it needs to listen and then listen to the transmission channel and listen to the target. When the 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 band through the CCA/eCCA to determine the 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 following steps: when the target information needs to be transmitted, the target channel of the unlicensed frequency band is intercepted; if the total power of the signal on the target channel is detected to be lower than the preset threshold, then one is obtained. A channel listening result indicating that the target channel is in an idle state; if the total power of the signal on the target channel is detected to exceed a preset threshold, a channel sensing result indicating that the target channel is in an occupied state is obtained.

That is to say, when the network device or the terminal needs to transmit the target information, channel detection is performed on the target channel of 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 _Thresh , the target channel is determined. In the idle state, if it is detected that the total signal power of the target channel exceeds the power threshold X _Thresh , it is determined that the target channel is in an occupied state, that is, other network devices or terminals occupy the target channel.

Step 12: When the channel listening result indicates that the target channel is occupied, it is detected whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and a detection result is obtained.

In order to improve the resource utilization on the unlicensed frequency band, when the target channel is intercepted to obtain the channel listening result of the target channel, it is further required to detect whether the first device and the second device occupying the target channel belong to the same RAT. If the second device that occupies the target channel to transmit information and the first device that performs the LBT belong to the same RAT, the target channel has a condition 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 that performs the LBT, additional 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 the network device-network device, the network device-terminal, the terminal-network device, and the terminal-terminal. Taking the first device as a network device as an example, the network device needs to perform additional signal detection between the network device-network device and the network device-terminal. Specifically, the signal detection between the network device and the network device is for the downlink scenario of the neighboring cell, and the network device further detects whether the network device of the same RAT is transmitting when the network device is detected to be occupied. The network device-to-terminal signal detection is performed on the uplink and downlink unsynchronized scenarios of the neighboring cells. When the network device detects that the target channel is occupied, the network device further detects whether the terminal with the same RAT is transmitting. Taking the first device as the terminal as an example, the terminal needs to perform detection between the terminal-network device and the terminal-terminal. Specifically, the signal detection between the terminal and the terminal is an uplink scenario for the neighboring cell, and when the terminal detects that the target channel is occupied, the terminal further detects whether the terminal with the same RAT is transmitting. The terminal-network device directly loves your signal detection for the scenario where the neighboring cell is not synchronized with the uplink and downlink. When the terminal detects that the target channel is occupied, the terminal further detects whether the network device with the same RAT is transmitting.

The step 12 specifically includes: detecting RAT indication information indicating a RAT type of the second device; 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, obtaining a first 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, the second detection result is obtained. 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.

The RAT indication information includes: control information carried by the physical downlink control channel PDCCH, a Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), and a sounding reference signal ( At least one of Sounding Reference Signal, SRS). That is, the signal for carrying the RAT indication information for performing additional signal detection may be a PDCCH, a DMRS, a CSI-RS, an SRS, or the like. For example, when the signal carrying the RAT indication information is carried by the PDCCH, the PDCCH needs to carry the RAT type information, and the network device or the terminal that performs the LBT detects the RAT type information at the transmission position of the PDCCH.

Further, the control information carried by the physical downlink control channel PDCCH includes at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information. That is, the RAT indication information may be explicitly carried in the DCI information or the group common DCI information, where the DCI may be a compact downlink control indication information (compact DCI), and the compact DCI may be a new DCI format in the NR system ( DCI format), DCI format 1C in LTE system can also be reused. When the DCI format 1C is used, the new Radio Network Temporary Identity (RNTI) can be used to distinguish between the remaining bits of the DCI format 1C of the CC-RNTI scrambling code.

In addition, the RAT indication information may also be implicitly carried in the DMRS and the CSI-RS, and the network device or terminal that performs the LBT needs to detect at the location of the DMRS or the CSI-RS. The demodulation reference signal DMRS includes at least one of a pre-demodulation reference signal, an additional demodulation reference signal (additional DMRS), and an interfering reference signal of the interference measurement. Among them, different DMRSs are sent at different locations.

Similarly, the channel state information reference signal CSI-RS includes: CSI-RS of beam management, CSI-RS of channel state information CSI measurement, CSI-RS of mobility management, and CSI-RS of interference measurement. At least one. Among them, different CSI-RSs are sent in different locations.

Here, the RAT indication information is implicitly carried in the DMRS and the CSI-RS. If the network device or the terminal that performs the LBT can detect that the neighboring network device occupying the target channel sends the DMRS or the CSI-RS, the network device and the occupied LBT are used. The neighboring network devices of the target channel belong to the same RAT.

That is, the neighboring cell needs to exchange information of the DMRS and the CSI-RS, and corresponding Numerology information, so that the network device determines the location of the additional signal detection. The network device can also send related information to the terminal through the PDCCH, so that the terminal can determine the location of the additional signal detection.

Further, the RAT indication information may also be carried in the SRS, and the SRS is sent by the terminal occupying the target channel, and the network device or the terminal that performs the LBT detects at the corresponding SRS location, and if the SRS is detected, the terminal that occupies the target channel performs the The network devices or terminals of the LBT belong to the same RAT. It is worth noting that the neighboring cell needs to exchange the SRS information and the corresponding Numerology information, so that the LBT network device or the terminal determines the location of the additional signal detection.

Taking the PDDCH carrying RAT indication information as an example, when the RAT indication information is the control information carried by the PDCCH, the detecting the RAT indication information for indicating the second device RAT type includes: detecting the physicality of the second device occupying the target channel The downlink control channel PDCCH is configured to acquire RAT indication information that is carried by the PDCCH and is used to indicate a RAT type of the second device.

Step 13: Determine whether to transmit the target information on the target channel according to the detection result.

The step 13 specifically includes: when the detection result indicates that the first device and the second device belong to the same RAT, if there is no different radio access technology RAT sharing the target channel in the duration period, the target information is transmitted on the target channel. That is, when the first device detects that the total signal power E _LBT on the target channel of the unlicensed band exceeds the power threshold X _Thresh , the target channel is initially detected as busy. To improve the resource utilization, the first device needs to perform the foregoing additional signal detection, if the second device that occupies the target channel is detected as the device with the same RAT as the first device, and the device of the other RAT is determined to be long according to the rule. If the target channel in the unlicensed frequency band is not shared in the time, the target channel can be regarded as idle, and the first device can transmit the target information through the target channel, so that the first device and the second device can implement the target channel. Reuse.

Or, when the detection result indicates that the first device and the second device belong to the same RAT, if the difference between the total signal power on the target channel and the total signal power of the same RAT on the target channel and the second device is lower than a preset threshold , the target information is transmitted on the target channel. That is, when the first device detects that the total signal power E _LBT on the target channel of the unlicensed band exceeds the power threshold X _Thresh , the target channel is initially detected as busy. In order to improve the resource utilization, the first device needs to perform the foregoing additional signal detection. If the second device that occupies the target channel is detected as the device with the same RAT as the first device, the device of the other RAT cannot be guaranteed according to the rule. If the target channel in the unlicensed frequency band is not shared in the time, the difference between the total signal power L _LBT on the target channel and the total power E _Singal of the signal transmitted by the same RAT device on the target channel is further detected. If the difference between E _LBT and E _Singal exceeds X _Thresh , the target channel is determined to be busy. If the difference between E _LBT and E _Singal is lower than X _Thresh , the target channel is determined to be idle, and the first device can transmit the target through the target channel. Information to enable multiplexing of the target channel by the first device and the second device.

Further, in order to avoid the interference problem between different operators, the step 13 further includes: when the detection result indicates that the first device and the second device belong to the same operator, if there is no different radio access technology RAT in the duration period Sharing the target channel, transmitting the 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 the total signal power on the target channel is the same as the second device on the target channel The difference between the total power of the signal is lower than the preset threshold, and the target information is transmitted on the target channel.

Specifically, as shown in FIG. 2, a scenario in which two cells of the same operator (operator1) transmit on an unlicensed frequency band. The network equipment (base station 1, gNB1) in cell one (cell1) needs data to be transmitted first, and gNB1 performs LBT. When the channel detection is empty, the reservation signal is transmitted to occupy the channel, as indicated by the arrow in FIG. The control information and data are transmitted until the next PDCCH location. When the network device (base station 2, gNB2) in cell 2 (cell 2) has data to transmit, gNB2 starts LBT, the channel detection result is that the channel is occupied, gNB2 continues to listen, and extra is performed at the PDCCH location of cell one. Signal detection, the same operator ID is detected, that is, gNB2 and gNB1 belong to the same carrier, and according to the rule, it is determined that there is no access of different RAT devices in the duration period, and then gNB2 can The target channel is considered to be empty, and the LBT is stopped, and a reservation signal is transmitted to occupy the channel, as indicated by the arrow in FIG. 2, until the next PDCCH position starts to transmit control information and data; or, the same carrier identifier is detected. (operator ID), that is, gNB2 and gNB1 belong to the same carrier, and the difference between E _LBT and E _Singal is lower than X _Thresh . At this time, gNB2 can consider that the target channel is empty, stop LBT, and send a occupancy signal (reservation signal). The channel, as indicated by the arrow in Figure 2, begins to transmit control information and data until the next PDCCH location.

As shown in FIG. 3, scenarios in which multiple cells are transmitted on unlicensed frequency bands by different operators. The base station one (gNB1) in the cell 1 (cell1) of the operator 2 (operator2) has data to be transmitted first, and the gNB1 performs LBT. When the channel detection is empty, the reservation signal is used to occupy the channel, as shown in FIG. The position indicated by the arrow begins to transmit control information and data until the next PDCCH position. When the base station 2 (gNB2) in the cell 2 (cell 2) of the operator 1 (operator 1) has data to transmit, the gNB 2 starts to perform the LBT, and the power detection target channel is busy, and the gNB 2 continues to listen, in the neighboring cell (as shown in the figure). If the same carrier identifier (same operator ID) is not detected at the location of each PDCCH of the base station-gNB1) in the cell 1 of the operator-operator1, the LBT is continued until the counter of the LBT is 0 (counter N=0), stop listening, as indicated by the arrow in Figure 3.

It is worth noting that the above describes how to detect whether two gNBs belong to the same carrier. The above detection mode is also applicable to scenarios in which two gNBs belong to the same RAT type, and network device-terminal, terminal-network device, A scenario in which the terminal-terminals belong to the same carrier or RAT.

In the transmission method in the unlicensed frequency band of the embodiment of the present disclosure, when the first device is busy listening to the target channel in the unlicensed frequency band, the first device further detects whether the second device of the first device and the target channel belongs to the same wireless connection. Into the technology, a detection result is obtained, and further determining, according to the detection result, whether the first device multiplexes the target channel with the second device. That is, even if a device is detected to be transmitted on the target channel, other devices have the opportunity to multiplex the target channel to improve resource utilization.

The above embodiments respectively describe the transmission methods in the unlicensed frequency bands in different scenarios. The following embodiments of the present invention will be further described in conjunction with the accompanying drawings.

As shown in FIG. 4, the device 400 of the embodiment of the present disclosure can implement the interception of the transmission channel of the unlicensed frequency band in the foregoing embodiment, and obtain a channel listening result; when the channel listening result indicates that the target channel is occupied, Detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtains a detection result; according to the detection result, determining whether to transmit the target information on the target channel, and achieving the same effect, The device 400 specifically includes the following functional modules:

The first intercepting module 410 is configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result.

The first detecting module 420 is configured to: when the channel listening result indicates that the target channel is occupied, detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtaining a detection result;

The processing module 430 is configured to determine, according to the detection result, whether the target information is transmitted on the target channel.

The first detecting module 420 includes:

a first detecting unit, configured to detect RAT indication information used to indicate a second device RAT type;

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

The processing module 430 includes:

a first transmission unit, configured to: when the detection result indicates that the first device and the second device belong to the same RAT, if there is no different radio access technology RAT sharing the target channel in the duration, the target information is transmitted on the target channel; 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, if the total power of the signal on the target channel is lower than the total power of the signal on the target channel and the same RAT of the second device is lower than The preset threshold is used to transmit the target information on the target channel.

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, if there is no different wireless access technology RAT sharing the target channel in the duration, the target information is transmitted on the target channel. ;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, if the total signal power on the target channel is different from the total signal power of the same RAT on the target channel and the second device If the value is lower than the preset threshold, the target information is transmitted on the target channel.

The first detecting unit is specifically configured to: when the RAT indication information is the control information carried by the PDCCH, detecting a physical downlink control channel PDCCH of the second device that occupies the target channel, to obtain the PDCCH carrying the second device RAT type RAT indication information.

The control information carried in the PDCCH of the physical downlink control channel includes at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information.

The demodulation reference signal DMRS includes at least one of a pre-demodulation reference signal, an additional demodulation reference signal, and a modulation reference signal.

The channel state information reference signal CSI-RS includes at least one of a beam management CSI-RS, a channel state information measurement CSI-RS, a mobility management CSI-RS, and an interference measurement CSI-RS.

The first intercepting module 410 includes:

a listening unit, configured to listen to a target channel of an unlicensed band when there is target information to be transmitted;

a third processing unit, configured to: when the total power of the signal on the target channel is detected to be lower than a preset threshold, obtain a channel listening result indicating that the target channel is in an idle state;

The fourth processing unit is configured to: when detecting that the total power of the signal on the target channel exceeds a preset threshold, obtain a channel listening result indicating that the target channel is in an occupied state.

It is to be noted that the first device in the embodiment of the present disclosure further detects whether the first device and the second device occupying the target channel belong to the same radio access technology when the target channel in the unlicensed frequency band is busy. And detecting a result, and further determining, according to the detection result, whether the first device multiplexes the target channel with the second device. That is, even if a device is detected to be transmitted on the target channel, other devices have the opportunity to multiplex the target channel to improve resource utilization.

In order to better achieve the above object, an embodiment of the present disclosure further provides a network device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer program The steps in the transmission method under the unlicensed frequency band as described above are implemented. Embodiments of the present disclosure also provide a terminal including a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer program to implement an unlicensed band as described above The steps in the transfer method. Embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the transmission method in an unlicensed frequency band as described above.

Specifically, embodiments of the present disclosure also provide a network device. As shown in FIG. 5, the network device 500 includes an antenna 51, a radio frequency device 52, and a baseband device 53. The antenna 51 is connected to the radio frequency device 52. In the upstream direction, the radio frequency device 52 receives information through the antenna 51 and transmits the received information to the baseband device 53 for processing. In the downstream direction, the baseband device 53 processes the information to be transmitted and transmits it to the radio frequency device 52. The radio frequency device 52 processes the received information and transmits it via the antenna 51.

The above-described band processing device may be located in the baseband device 53, and the method performed by the network device in the above embodiment may be implemented in the baseband device 53, which includes the processor 54 and the 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, one of which is, for example, a processor 54, connected to the memory 55 to call a program in the memory 55 to execute The network device operation shown in the above method embodiment.

The baseband device 53 can also include a network interface 56 for interacting with the radio frequency device 52, such as a common public radio interface (CPRI).

The processor here may be a processor or a collective name of multiple processing elements. For example, the processor may be a CPU, an ASIC, or one or more configured to implement the method performed by the above network device. An integrated circuit, such as one or more microprocessor DSPs, or one or more field programmable gate array FPGAs. The storage element can be a memory or a collective name for a plurality of storage elements.

Memory 55 can be either volatile memory or non-volatile memory, or can include both volatile and non-volatile memory. The non-volatile memory may be a Read-Only Memory (ROM), a Programmable ROM (Programmable ROM), or an Erasable PROM (EPROM). , electrically erasable programmable read only memory (EEPROM) or flash memory. The volatile memory may be a Random Access Memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous). DRAM (SDRAM for short), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM for short), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory ( Synchlink DRAM (SLDRAM for short) and Direct Memory Bus (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 disclosure further includes: a computer program stored on the memory 55 and operable on the processor 54, and the processor 54 calls a computer program in the memory 55 to execute the method executed by each module shown in FIG. .

Specifically, when the computer program is called by the processor 54, the computer program can be used to perform: intercepting a transmission channel of an unlicensed frequency band, and obtaining a channel listening result;

Determining whether to transmit the target information on the target channel according to the detection result.

Specifically, the computer program is used by the processor 54 to perform: detecting RAT indication information indicating a second device RAT type;

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, obtaining a first 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, the second detection result is obtained.

Specifically, when the computer program is invoked by the processor 54 to be executed, when the detection result indicates that the first device and the second device belong to the same RAT, if there is no different wireless access technology in the duration period The RAT shares the target channel, and then transmits the 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 total signal power on the target channel is lower than the total signal power of the same RAT on the target channel as the second device At the preset threshold, the target information is transmitted on the target channel.

Specifically, when the computer program is called by the processor 54, the method is: when the detection result indicates that the first device and the second device belong to the same operator, if there is no different wireless access technology RAT sharing the target channel in the duration period, Transmitting the 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 the difference between the total signal power on the target channel and the total signal power of the same RAT on the target channel and the second device is lower than a preset threshold, Then the target information is transmitted on the target channel.

When the RAT indication information is the control information carried by the PDCCH, when the computer program is invoked by the processor 54, the computer program may be configured to: detect a physical downlink control channel PDCCH of the second device that occupies the target channel, to obtain the PDCCH. Carrying RAT indication information indicating a RAT type of the second device.

The control information carried by the physical downlink control channel PDCCH includes at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information.

Further, when the computer program is called by the processor 54, it can be used to perform: when there is target information to be transmitted, the target channel of the unlicensed band is intercepted;

If the total signal power on the target channel is detected to be lower than a preset threshold, a channel sensing result indicating that the target channel is in an idle state is obtained;

If the total signal power on the target channel is detected to exceed a preset threshold, a channel sensing result indicating that the target channel is in an occupied state is obtained.

The network device may be a Global System of Mobile communication (GSM) or a Code Division Multiple Access (CDMA) base station (Base Transceiver Station, BTS for short) or a wideband code. A base station (NodeB, NB for short) in the Wideband Code Division Multiple Access (WCDMA), and may also be an evolved Node B (eNB or eNodeB) in LTE, or a relay station or an access point. Or a base station or the like in a future 5G network is not limited herein.

When the network device of the embodiment of the present disclosure detects that the target channel in the unlicensed frequency band is busy, it further detects whether the network device and other network devices or terminals occupying the target channel belong to the same radio access technology, and obtain a detection result. And further determining, according to the detection result, whether the network device multiplexes the target channel with another device or terminal. That is, even if other network devices or terminals are detected to be transmitted on the target channel, the network device has an opportunity to multiplex the target channel to improve resource utilization.

In order to achieve the above objective, the embodiment of the present disclosure further provides a terminal. Specifically, FIG. 6 is a block diagram of a terminal 600 according to another embodiment of the present disclosure. 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 will be appreciated that the bus system 605 is used to implement connection communication between these components. The bus system 605 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 605 in FIG.

The user interface 603 can include a display or a pointing device (eg, a touchpad or a touch screen, etc.).

It is to be understood that the memory 602 in an embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (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 implementations, memory 602 stores elements, executable modules or data structures, or a subset thereof, or their set of extensions: operating system 6021 and application 6022.

The operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 6022 includes various applications, such as a media player (Media Player), a browser, and the like, for implementing various application services. A program implementing the method of the embodiments of the present disclosure may be included in the application 6022.

In the embodiment of the present disclosure, the terminal 600 further includes: a computer program stored on the memory 602 and executable on the processor 601, and specifically, may be a computer program in the application 6022, and the computer program is executed by the processor 601. The following steps are implemented: listening to the transmission channel of the unlicensed frequency band, and obtaining a channel listening result;

The method disclosed in the above embodiments of the present disclosure may be applied to the processor 601 or implemented by the processor 601. Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 601 or an instruction in a form of software. The processor 601 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. 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 above method in combination with its hardware.

It will be appreciated that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.

For a software implementation, the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein. The software code can be stored in memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

Specifically, when the computer program is executed by the processor 601, the following steps may be further implemented: detecting RAT indication information indicating a second device RAT type;

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, the first detection result is obtained;

Specifically, when the computer program is executed by the processor 601, the following steps may be further implemented: when the detection result indicates that the first device and the second device belong to the same RAT, if there is no different radio access technology RAT sharing target channel in the duration period , transmitting the 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 between the total signal power on the target channel and the total signal power of the same RAT on the target channel and the second device is lower than a preset threshold, then The target information is transmitted on the target channel.

Specifically, when the computer program is executed by the processor 601, the following steps may be implemented: when the detection result indicates that the first device and the second device belong to the same operator, if there is no different wireless access technology RAT sharing target in the duration period Channel, the target information is transmitted on the target channel; or,

Specifically, the RAT indication information includes at least one of control information carried by the 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 the control information carried by the PDCCH, when the computer program is executed by the processor 601, the following steps may be implemented: detecting a physical downlink control channel PDCCH of the second device that occupies the target channel, to obtain the PDCCH, RAT indication information indicating a RAT type of the second device.

Specifically, the control information carried by the physical downlink control channel PDCCH includes at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information.

Specifically, the demodulation reference signal DMRS includes at least one of a pre-demodulation reference signal, an additional demodulation reference signal, and a modulation reference signal.

Specifically, when the computer program is executed by the processor 601, the following steps may be implemented: the channel state information reference signal CSI-RS includes: CSI-RS for beam management, CSI-RS for channel state information measurement, CSI-RS for mobility management. And at least one of the CSI-RSs that interfere with the measurement.

Specifically, when the computer program is executed by the processor 601, the following steps may be implemented: when the target information needs to be transmitted, the target channel of the unlicensed frequency band is intercepted;

If the total power of the signal on the target channel is detected to be lower than the preset threshold, a channel listening result indicating that the target channel is in an idle state is obtained;

If the total power of the signal on the target channel is detected to exceed the preset threshold, a channel listening result indicating that the target channel is in the occupied state is obtained.

The terminal may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem. . The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile terminal. The computer, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network. For example, Personal Communication Service (PCS) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, personal digital assistant (Personal) Digital Assistant, PDA for short. The wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a remote terminal. The access terminal, the user terminal (User Terminal), the user agent (User Agent), and the user device (User Device or User Equipment) are not limited herein.

When the terminal of the embodiment of the present disclosure detects that the target channel in the unlicensed frequency band is busy, it further detects whether the terminal belongs to the same radio access technology as other terminals or base stations occupying the target channel, and obtains a detection result, and further according to the The detection result determines whether the terminal multiplexes the target channel with other terminals or base stations. That is to say, even if other terminals or base stations are detected to transmit on the target channel, the terminal has the opportunity to multiplex the target channel to improve resource utilization.

The above embodiment describes the transmission method in the unlicensed frequency band of the present disclosure from the first device side. The following embodiment further describes the transmission method in the unlicensed frequency band on the second device side in conjunction with the accompanying drawings.

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

Step 71: Listening to the transmission channel of the unlicensed frequency band to obtain a channel listening result.

In the New Radio License Assisted Access (NR-LAA) system, when a network device or terminal sends data information, it needs to listen and then listen to the transmission channel and listen to the target. When the channel is idle, the target information is transmitted through the target channel. Specifically, the step 71 includes: when the target information needs to be transmitted, listening to the target channel of the unlicensed frequency band; if the total power of the signal on the target channel is detected to be lower than the preset threshold, obtaining an indication target A channel listening result in which the channel is in an idle state; if the total power of the signal on the target channel is detected to exceed a preset threshold, a channel listening result indicating that the target channel is in an occupied state is obtained. That is to say, when the network device or the terminal needs to transmit the target information, channel detection is performed on the target channel of 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 _Thresh , the target channel is determined. In the idle state, if it is detected that the total signal power of the target channel exceeds the power threshold X _Thresh , it is determined that the target channel is in an occupied state, that is, other network devices or terminals occupy the target channel.

Step 72: When the channel listening result indicates that the target channel is idle, the RAT indication information indicating the second device RAT type is transmitted on the target channel.

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

In the transmission method in the unlicensed frequency band of the embodiment of the present disclosure, the second device listens to the target channel of the unlicensed band channel, and when the target channel is idle, transmits the target information and the RAT indicating the RAT type of the RAT through the target channel. Instructing information to facilitate additional signal detection of the first device of the LBT, and the first device may further multiplex the same target channel with the second device when the additional signal detection process detects that the second RAT belongs to the same RAT. To improve resource utilization.

The above embodiment describes the transmission method in the unlicensed frequency band in different scenarios. The device corresponding thereto will be further introduced in the following with reference to the accompanying drawings.

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

The second intercepting module 810 is configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result.

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

It is to be noted that the device of the embodiment of the present disclosure transmits the target information and the RAT indication information indicating the RAT type of the RAT after the target channel is occupied, so as to facilitate additional signal detection of the first device of the LBT. When an apparatus detects an RAT that belongs to the same RAT as the second device by using an additional signal detection process, the same target channel may be further multiplexed with the second device to improve resource utilization.

It should be noted that the division of each module of the first device and the second device is only a division of a logical function, and may be integrated into one physical entity or physically separated in whole or in part. And these modules can all be implemented by software in the form of processing component calls; or all of them can be implemented in hardware form; some modules can be realized by processing component calling software, and some modules are realized by hardware. For example, the determining module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by a processing element of the above device. Call and execute the functions of the above determination module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated or implemented independently. The processing elements described herein can be an integrated circuit that has signal processing capabilities. In the implementation process, each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above method, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors ( A digital signal processor (DSP), or one or more Field Programmable Gate Arrays (FPGAs). For another example, when one of the above modules is implemented in the form of a processing component scheduler code, the processing component may be a general purpose processor, such as a central processing unit (CPU) or other processor that can call the program code. As another example, these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present disclosure.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working processes of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the portion of the technical solution of the present disclosure that contributes in essence or to the prior art or the portion of the technical solution may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

In addition, it should be noted that in the apparatus and method of the present disclosure, it is apparent that various components or steps may be decomposed and/or recombined. These decompositions and/or recombinations should be considered as equivalents to the present disclosure. Also, the steps of performing the above-described series of processes may naturally be performed in chronological order in the order illustrated, but need not necessarily be performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those skilled in the art that all or any of the steps or components of the methods and apparatus of the present disclosure may be in a network of any computing device (including a processor, storage medium, etc.) or computing device, in hardware, firmware The software, or a combination thereof, is implemented by those of ordinary skill in the art using their basic programming skills while reading the description of the present disclosure.

Thus, the objects of the present disclosure can also be achieved by running a program or a set of programs on any computing device. The computing device can be a well-known general purpose device. Accordingly, the objects of the present disclosure may also be realized by merely providing a program product including program code for implementing the method or apparatus. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure. It will be apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present disclosure, it is apparent that various components or steps may be decomposed and/or recombined. These decompositions and/or recombinations should be considered as equivalents to the present disclosure. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order illustrated, but need not necessarily be performed in chronological order. Certain steps may be performed in parallel or independently of one another.

The above is an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present disclosure. Within the scope of protection of the present disclosure.

Claims

A transmission method in an unlicensed frequency band, applied to the first device, comprising:

Listening to the transmission channel of the unlicensed band to obtain a channel listening result;

When the channel listening result indicates that the target channel is occupied, detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtaining a detection result;

Determining whether to transmit the target information on the target channel according to the detection result.
The transmission method in the unlicensed frequency band according to claim 1, wherein the detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtaining a detection result Steps, including:

Detecting RAT indication information indicating a second device RAT type;

Determining, according to whether the RAT type of the second device indicated by the RAT indication information is the same as the RAT type of the first device, determining whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, To obtain the test result.
The transmission method in the unlicensed frequency band according to claim 1 or 2, wherein the step of determining whether to transmit the target information on the target channel according to the detection result comprises:

When the detection result indicates that the first device and the second device belong to the same RAT, if there is no different radio access technology RAT sharing target channel in the duration period, the target information is transmitted 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 total signal power on the target channel is different from the total signal power of the same RAT on the target channel and the second device If the value is lower than the preset threshold, the target information is transmitted on the target channel.
The transmission method in the unlicensed frequency band according to claim 1 or 2, wherein the step of determining whether to transmit the target information on the target channel according to the detection result comprises: a step comprising:

When the detection result indicates that the first device and the second device belong to the same operator, if there is no different wireless access technology RAT sharing target channel in the duration period, the target is transmitted on the target channel. Information; or,

When the detection result indicates that the first device and the second device belong to the same operator, if the total signal power on the target channel is the same as the total signal power of the same RAT as the second device on the target channel If the difference is lower than the preset threshold, the target information is transmitted on the target channel.
The transmission method in the unlicensed frequency band according to claim 2, wherein the RAT indication information comprises: control information carried by the physical downlink control channel PDCCH, demodulation reference signal DMRS, channel state information reference signal CSI-RS, and detection At least one of the reference signals SRS.
The transmission method in the unlicensed frequency band according to claim 5, wherein when the RAT indication information is control information carried by the PDCCH, the detecting the step of indicating the RAT indication information of the second device RAT type includes :

Detecting a physical downlink control channel PDCCH of the second device that occupies the target channel, to obtain RAT indication information that is used by the PDCCH to indicate a RAT type of the second device.
The transmission method in the unlicensed frequency band according to claim 6, wherein the control information carried by the physical downlink control channel PDCCH includes at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information. item.
The transmission method in an unlicensed frequency band according to claim 5, wherein the demodulation reference signal DMRS comprises at least one of a pre-demodulation reference signal, an additional demodulation reference signal, and an interference measurement reference signal. .
The transmission method in an unlicensed frequency band according to claim 5, wherein the channel state information reference signal CSI-RS comprises: a CSI-RS for beam management, a CSI-RS for channel state information measurement, and a CSI for mobility management. - at least one of the RS and the CSI-RS of the interference measurement.
The transmission method in the unlicensed frequency band according to claim 1, wherein the step of intercepting the transmission channel of the unlicensed frequency band to obtain a channel listening result comprises:

When there is target information to be transmitted, the target channel of the unlicensed band is intercepted;

If the total signal power on the target channel is detected to be lower than a preset threshold, a channel sensing result indicating that the target channel is in an idle state is obtained;

If the total signal power on the target channel is detected to exceed a preset threshold, a channel sensing result indicating that the target channel is in an occupied state is obtained.
A device applied to a first device, comprising:

a first intercepting module, configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result;

a first detecting module, configured to: when the channel listening result indicates that the target channel is occupied, detecting whether the first device belongs to the same radio access technology RAT as the second device occupying the target channel, and obtaining a detection result;

And a processing module, configured to determine, according to the detection result, whether to transmit target information on the target channel.
The device of claim 11, wherein the first detection module comprises:

a first detecting unit, configured to detect RAT indication information used to indicate a second device RAT type;

a processing unit, configured to determine, according to whether the RAT type of the second device indicated by the RAT indication information is the same as the RAT type of the first device, determining whether the first device belongs to the same wireless device as the second device occupying the target channel The technology RAT is accessed to obtain the detection result.
The device according to claim 11 or 12, wherein 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, if there is no different radio access technology RAT sharing target channel in the duration period, Transmitting target information on the target channel; 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, if the total signal power on the target channel is the same as the second device on the target channel If the difference between the total signal power of the RAT is lower than a preset threshold, the target information is transmitted on the target channel.
The device according to claim 11 or 12, wherein the processing module further comprises:

a third transmission unit, configured to: when the detection result indicates that the first device and the second device belong to the same operator, if there is no different radio access technology RAT sharing target channel in the duration period, then Transmitting target information on the target channel; 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, if the total signal power on the target channel is on the target channel and the second device If the difference in total signal power of the same RAT is lower than a preset threshold, the target information is transmitted on the target channel.
The device according to claim 12, 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 One.
The device according to claim 15, wherein the first detecting unit is specifically configured to: when the RAT indication information is control information carried by the PDCCH, detect a physical downlink control channel of the second device that occupies the target channel And a PDCCH, to obtain RAT indication information that is used by the PDCCH to indicate a RAT type of the second device.
The device according to claim 16, wherein the control information carried by the physical downlink control channel PDCCH comprises at least one of a downlink control indication DCI information and a group common downlink control indication group common DCI information.
The apparatus of claim 15, wherein the demodulation reference signal DMRS comprises at least one of a pre-demodulation reference signal, an additional demodulation reference signal, and an interfering reference signal of interference measurement.
The apparatus according to claim 15, wherein said channel state information reference signal CSI-RS comprises: beam-managed CSI-RS, channel state information measured CSI-RS, mobility managed CSI-RS, and interference measurement At least one of the CSI-RS.
The device of claim 11, wherein the first listening module comprises:

a listening unit, configured to listen to a target channel of an unlicensed band when there is target information to be transmitted;

a third processing unit, configured to: when the total power of the signal on the target channel is detected to be lower than a preset threshold, obtain a channel listening result indicating that the target channel is in an idle state;

The fourth processing unit is configured to: when it is detected that the total power of the signal on the target channel exceeds a preset threshold, obtain a channel listening result indicating that the target channel is in an occupied state.
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 as claimed in claims 1 to 10 The steps in the transmission method under the unlicensed frequency band of any of the above.
A terminal comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor; wherein the computer program is executed by the processor to implement the claims 1 to 10 The steps in the transmission method in the unlicensed frequency band described in any one of the above.
A computer readable storage medium, wherein the computer readable storage medium stores a computer program, the computer program being executed by a processor to implement an unlicensed frequency band according to any one of claims 1 to 10. The steps of the transfer method.
A transmission method in an unlicensed frequency band, applied to a second device, comprising:

Listening to the transmission channel of the unlicensed band to obtain a channel listening result;

Transmitting RAT indication information indicating a second device RAT type on the target channel when the channel listening result indicates that the target channel is idle;

The RAT indication information includes at least one of control information carried by the physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS, and a sounding reference signal SRS.
A device applied to a second device, comprising:

a second intercepting module, configured to listen to a transmission channel of an unlicensed frequency band to obtain a channel listening result;

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

The RAT indication information includes at least one of control information carried by the physical downlink control channel PDCCH, a demodulation reference signal DMRS, a channel state information reference signal CSI-RS, and a sounding reference signal SRS.
A network device comprising: a processor, a memory, and a computer program stored on the memory and executable on the processor; wherein the processor executes the computer program as claimed in claim 24 Steps in the transmission method under the unlicensed band.
A terminal comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor; wherein the computer program is executed by the processor to implement the method of claim 24 Steps in the transmission method under the unlicensed band.
A computer readable storage medium, wherein the computer readable storage medium stores a computer program, the computer program being executed by a processor to implement the steps of the transmission method in the unlicensed band according to claim 24.