WO2018153006A1 - Unlicensed spectrum contention method and device - Google Patents

Abstract

Provided are an unlicensed spectrum contention method and device. The method comprises: a first device sending a spectrum usage message to a licensed-assisted access (LAA) control entity, the spectrum usage message comprising the usage condition of an unlicensed spectrum in an area where the first device is located; the first device receiving a first notification message sent by the licensed-assisted access (LAA) control entity, the first notification message at least comprising an unlicensed spectrum and a contention parameter for contending for the unlicensed spectrum, wherein the contention parameter is obtained by means of an analysis of the LAA control entity according to the spectrum usage message; and the first device contending for the usage of the unlicensed spectrum according to the first notification message. Accordingly, by means of matching a contention parameter with the number of devices contending for an unlicensed spectrum, the utilization rate of the unlicensed spectrum is improved.

Description

Unlicensed spectrum competition method and equipment

This application claims the priority of the Chinese Patent Application filed on Dec. 27, 2017, the Chinese Patent Office, Application No. 201710109480.9, entitled "A Channel Resource Allocation Method and Apparatus for LAA-NR", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and device for competing for an unlicensed spectrum.

Background technique

As a key means to improve communication efficiency, Licensed-Assisted Access (LAA) technology has been widely used in Long-term Evolution (LTE) systems. It realizes the sharing of license-free spectrum resources through the competition mechanism of Listen-Before-Talk (LBT). However, in the prior art, the parameter setting of the competition mechanism is relatively fixed, resulting in inefficient use of the unlicensed spectrum.

Summary of the invention

The embodiment of the present application provides a contention-free spectrum competition method and device for improving utilization of an unlicensed spectrum.

A first aspect of the embodiments of the present application provides a method for competing for a license-free spectrum, including: the first device sends a spectrum usage message to the license-assisted access LAA control entity, where the spectrum usage message includes the license-free area in the area where the first device is located. The usage of the spectrum; the first device receives the first notification message sent by the LAA control entity, and the first notification message includes at least an unlicensed spectrum and a competition parameter for competing for the unlicensed spectrum, wherein the contention parameter is LAA The control entity obtains the information according to the spectrum usage message; the first device competes to use the unlicensed spectrum according to the first notification message. That is, the contention parameters of the unlicensed spectrum in the embodiment of the present application are dynamically set according to the usage of the unlicensed spectrum, so that the competition parameters of the license-free spectrum can adapt to changes in the network, thereby improving the spectrum utilization of the unlicensed spectrum. rate.

In a possible design, the contention parameter includes at least an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, a listening policy, a listening parameter, and the first device in the One of the competition priorities in the unlicensed spectrum.

In one possible design, the contention parameters include: a CCA threshold, a number of devices competing for the unlicensed spectrum, and a contention priority of the first device in the unlicensed spectrum; the first device competes for use according to the first notification message Before the unlicensed spectrum, the method further includes: the first device adjusting the CCA threshold value in the competition parameter according to a mapping relationship between the CCA threshold value and the number of devices or the competition priority.

In a possible design, the contention parameters include: a CCA threshold value and a number of devices competing for the unlicensed spectrum; and the first device competes to use the unlicensed spectrum according to the first notification message, including: the first device is exempt from the license The number of devices corresponding to the spectrum determines the listening strategy of the unlicensed spectrum; the first device competes to use the unlicensed spectrum according to the listening policy and the CCA threshold.

In one possible design, the competition parameters include: CCA threshold and interception strategy; The contention parameter further includes a listening policy. The first device competes to use the unlicensed spectrum according to the first notification message, and the first device competes to use the unlicensed spectrum according to the listening policy and the CCA threshold.

In a possible design, the contention parameters of the unlicensed spectrum include: a CCA threshold value and a listening parameter, and the listening parameter includes a contention window or a listening interval; the first device competes to use the license-free according to the first notification message. The spectrum includes: the first device competes for the target licensed spectrum according to the CCA threshold and the listening parameter.

In a possible design, the method further includes: if the first device successfully competes to use the unlicensed spectrum, the first device determines, according to the local message and the interception parameter of the unlicensed spectrum, the next time the contention uses the unlicensed spectrum The listening parameter, wherein the local message includes the number of radio link failure RLFs and an acknowledgement ACK message or a non-acknowledged NCK message.

In a possible design, the first device determines, according to the local message and the interception parameter of the unlicensed spectrum, the interception parameter when the next time the content is used for the unlicensed spectrum, including: if the local message includes the NCK message, and the RLF If the number is less than the preset threshold, the first device increases the value of the listening parameter, and determines that the increased listening parameter is the listening parameter when the next time the content is used for the unlicensed spectrum; if the local message includes the ACK message and/or If the number of RLFs is greater than or equal to the preset threshold, the value of the listening parameter is lowered or the value of the listening parameter is kept unchanged, and the reduced or unchanged listening parameter is determined to be the next time the contention uses the unlicensed spectrum. Listen to the parameters.

In a possible design, the method further includes: if the first device does not successfully compete to use the unlicensed spectrum, the first device determines whether the unlicensed spectrum is a high frequency spectrum; if the unlicensed spectrum is a high frequency spectrum, first The device uses the current listening parameter as the listening parameter when the unlicensed spectrum is used for the next competition. If the unlicensed spectrum is not the high frequency spectrum, the first device increases the value of the listening parameter and determines the increased listening parameter. The listening parameter when using the unlicensed spectrum for the next competition.

In a possible design, the listening interval is composed of a channel occupation time COT and an idle time IDP. When the listening parameter includes a listening interval, the first device increases the value of the listening parameter, including: increasing the COT. Value or increase the value of COT and IDP.

In one possible design, the first device comprises a base station and/or a terminal device.

A second aspect of the embodiments of the present application provides a method for competing for an unlicensed spectrum, comprising: receiving, by a LAA control entity, a spectrum usage message sent by a first device and other devices, where the spectrum usage message includes usage of an unlicensed spectrum; and the LAA control entity The contention of the unlicensed spectrum is determined according to the usage of the unlicensed spectrum. The LAA control entity carries the unlicensed spectrum and the contention of the unlicensed spectrum in the first notification message and sends the content to the first device. That is, the contention parameters for competing for the unlicensed spectrum in the embodiment of the present application are dynamically set according to the usage of the unlicensed spectrum, so that the contention parameters of the license-free spectrum can adapt to changes in the network, thereby improving the spectrum of the license-free spectrum. Spectrum utilization.

In a possible design, the LAA control entity determines the contention parameters of the unlicensed spectrum according to the usage of the unlicensed spectrum, including: the LAA control entity counts the number of devices competing for the unlicensed spectrum according to the received spectrum usage message; LAA The controlling entity determines the contention parameters of the license-free spectrum based on the number of devices.

In a possible design, the first notification message further includes a correspondence between the first device and the unlicensed spectrum.

In one possible design, the first device comprises a base station and/or a terminal device.

A third aspect of the embodiments of the present application provides a communication device, including: a transmitter, a receiver, and a processor, the processor is coupled to the receiver and the transmitter; and the transmitter sends a spectrum usage message to the license assisted access LAA control entity, The spectrum usage message includes the use of the unlicensed spectrum in the area where the first device is located; the receiver receives the permission to access the first notification message sent by the LAA control entity, where the first notification message includes at least the unlicensed spectrum, and the The competition parameter for competing for the unlicensed spectrum, wherein the contention parameter is obtained by the LAA control entity according to the spectrum usage message analysis; the processor competes to use the unlicensed spectrum according to the first notification message.

In a possible design, the contention parameters include at least an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, a listening strategy, a listening parameter, and a competition of the first device in the license-free spectrum. One of the priorities.

In one possible design, the competition parameters include: the CCA threshold, the number of devices competing for the unlicensed spectrum, and the competition priority of the first device in the license-free spectrum; the processor is also based on the CCA threshold and the number of devices. Or the mapping relationship between the competition priorities, and adjust the CCA threshold in the competition parameters.

In a possible design, the contention parameters include: a CCA threshold value and a number of devices competing for the unlicensed spectrum; the processor determines a listening strategy of the unlicensed spectrum according to the number of devices corresponding to the unlicensed spectrum, and according to the detection Listening strategy and CCA thresholds, competing to use unlicensed spectrum.

In a possible design, the competition parameters include: CCA threshold and listening strategy; the competition parameters of the license-free spectrum also include the listening strategy; the processor competes for the license-free according to the listening policy and the CCA threshold. Spectrum.

In a possible design, the contention parameters of the unlicensed spectrum include: a CCA threshold and a listening parameter, and the listening parameter includes a contention window or a listening interval; the processor competes according to the CCA threshold and the listening parameter. Use the target licensed spectrum.

In a possible design, when the processor successfully competes to use the unlicensed spectrum, the processor determines, according to the local message and the interception parameter of the unlicensed spectrum, the listening parameter when the next time the content is used for the unlicensed spectrum, where The local message includes the number of radio link failure RLFs and an acknowledgment ACK message or a non-acknowledged NCK message.

In a possible design, when the local message includes an NCK message, and the number of RLFs is less than a preset threshold, the processor increases the value of the listening parameter, and determines that the increased listening parameter is used for the next competition. The listening parameter when the spectrum is licensed; when the number of the ACK message and/or the RLF in the local message is greater than or equal to the preset threshold, the processor reduces the value of the listening parameter or maintains the value of the listening parameter unchanged, and determines to decrease Or the unchanged listening parameters are the listening parameters when the unlicensed spectrum is used for the next competition.

In one possible design, when the processor does not successfully compete for the unlicensed spectrum, the processor determines whether the unlicensed spectrum is a high frequency spectrum; if the unlicensed spectrum is a high frequency spectrum, the processor uses the current listening parameter as The next time the competition uses the interception parameters of the unlicensed spectrum; if the unlicensed spectrum is not the high frequency spectrum, the processor increases the value of the listening parameter and determines that the increased listening parameter is the next time the contention uses the unlicensed spectrum. The listening parameters.

In one possible design, the listening interval consists of a channel occupation time COT and an idle time IDP; the processor increases the listening interval by increasing the value of the COT or increasing the values of the COT and IDP.

A fourth aspect of the embodiments of the present application provides a LAA control device, including: a transmitter, a receiver, and a processor, the processor is coupled to the receiver and the transmitter; and the receiver receives the spectrum usage message sent by the first device and other devices. The spectrum usage message includes the use of the unlicensed spectrum; the processor determines the competition parameters of the license-free spectrum according to the use of the unlicensed spectrum; the transmitter carries the unlicensed spectrum and the competition parameters of the license-free spectrum in the first notification The message is sent to the first device.

In a possible design, the processor counts the number of devices competing for the unlicensed spectrum according to the received spectrum usage message, and determines the contention parameters of the unlicensed spectrum according to the number of devices.

In a possible design, the first notification message further includes a correspondence between the first device and the unlicensed spectrum.

In one possible design, the first device comprises a base station and/or a terminal device.

DRAWINGS

FIG. 1 is a schematic diagram of a frame structure of an FBE listening policy according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application;

FIG. 3 is a signaling flowchart of a method for competing for a license-free spectrum according to an embodiment of the present application;

4 is a flowchart of a method for competing for a license-free spectrum according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device 10 according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a LAA control device 20 according to an embodiment of the present application.

detailed description

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the embodiments of the present application and the above figures are used to distinguish similar objects, and It is not necessary to describe a particular order or order. It is to be understood that the data so used may be interchanged as 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.

Some of the terms used in this application are explained below so as to be understood by those skilled in the art:

1) A terminal is a device that provides voice and/or data connectivity to a user, for example, a handheld device having a wireless connection function, an in-vehicle device, or the like. Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.

2) A base station, also known as a Radio Access Network (RAN) device, is a device that accesses a terminal to a wireless network, and includes base stations in various communication systems, including but not limited to: transmission Transmission Reception Point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (Base Station Controller) , BSC), Base Transceiver Station (BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU). In addition, it can also include a Wifi access point (AP), etc.

3) Unlicensed spectrum refers to the spectrum whose use is not restricted by radio technology, operating companies and age.

4, the listening interval, refers to the time interval between two adjacent listening actions in the frame-based equipment (FBE) listening strategy, the listening interval includes the channel Occupancy Time (Channel Occupancy Time, Referred to as COT) and IDle Period (IDP).

5. The competition window refers to the product of the number of randomly configured Clear Channel Assessment (CCA) times and the duration of a single CCA in the listening strategy of the Load Based Equipment (LBE).

Carrier Aggregation (CA) configuration in an existing LTE (Long-term Evolution) system is used in an existing LTE (Licensed-Assisted Access LTE) system. And the structure, based on the communication of carriers on the carrier-licensed band, and configuring the carrier on the carrier-assisted band on the unlicensed band for communication, the design of which needs to follow the LBT competition mechanism.

In the LBT competition mechanism, the base station, the terminal, and the like are required to perform a Clear Channel Assessment (CCA) on the channel according to a preset listening policy before transmitting the information, and if all the transmissions from the surroundings are received within the CCA time. If the total power of the device is lower than the fixed CCA threshold specified in the standard, it is considered that the channel is successfully preempted. At this time, the channel can be used to transmit the signal. Otherwise, if the channel is occupied, the signal is not sent, after a preset time interval. Then perform the next idle channel evaluation until the channel is successfully preempted.

In the prior art, there are two types of channel listening strategies: one is a listening-based device (Load Based Equipment, LBE) listening strategy, and the other is a frame-based device (FBE). Listening strategy.

For the listening policy of the FBE, the interception and transmission are required to adhere to a fixed frame structure. In the example of FIG. 1, the device performs channel interception in the CCA time. When the channel is detected to be occupied, the next frame period is performed. No information is sent within the COT, otherwise the information is sent within the COT. The length of one frame period of the FBE listening policy is equal to the sum of the length of the COT and the length of the IDP. The frame period length of the FBE listening policy in the prior art is fixed, that is, the listening interval of the FBE listening policy in the prior art is fixed.

For the LBE listening policy, the prior art has a fallback mechanism. After detecting that the channel is occupied or the base station ends the channel occupation, the next idle channel evaluation is performed after a fixed time interval, and the counter is initialized to A random integer, CCA is performed once every CCA duration. If the channel is detected to be idle, the counter is decremented by one until the counter is zeroed and then the channel is sent to transmit traffic. The contention window of the LBE is equal to the random integer multiplied by the CCA duration. In the communication system, the contention window of the LBE listening policy is fixed.

It can be seen that in the prior art, whether it is the listening strategy of the LBE or the listening strategy of the FBE, the CCA threshold, the listening interval or the contention window of the channel listening are fixed. However, in different network states, the same-frequency interference is different. For example, when the number of devices competing for a certain unlicensed spectrum is small, the same-frequency interference on the unlicensed spectrum is small, and the number of devices is relatively large. The situation has little effect on the signal transmission. If the restriction on the CCA threshold is relaxed or the listening interval or the contention window is reduced, the device can be more easily seized to the channel, thereby improving the utilization of the unlicensed spectrum. However, if the CCA threshold, the listening interval, or the contention window are always fixed, the unlicensed spectrum cannot be fully utilized, resulting in a low utilization rate of the unlicensed spectrum. Especially in the case of the introduction of high frequency in the New Radio (NR) system, there are also a large number of unlicensed spectrums due to high frequencies, and because the high frequency unlicensed spectrum uses the beamforming directional transmission mode, To a certain extent, the chance of competitive collision is reduced, and even if there is some interference, the system can correctly receive data. However, the existing licensed assisted access technology does not take into account the new features of the NR system. Therefore, for the above reasons, the CCA threshold, the listening interval or the contention window in the licensed assisted access technology needs to be redesigned.

FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application. 2 includes a LAA Control Entity 00, a Base Station 10, a Base Station 11, a Base Station 12, and a Base Station 13. The cell 14, the cell 15, and the cell 16 where the base station 11, the base station 12, and the base station 13 are located are included in the cell 17 of the base station 10, that is, the base station 10 is a macro base station, and the base station 11 and the base station. Station 12 and base station 13 are micro base stations under the coverage of the macro base station. The LAA control entity 00 may be an independent hardware entity or a functional entity disposed in the macro base station 10. This embodiment is not specifically limited. During actual implementation, the LAA control entity 00 determines the number of devices competing for each unlicensed spectrum according to the unlicensed spectrum usage reported by each base station in the cell 17. Then, according to the number of devices competing for each unlicensed spectrum, configure corresponding contention parameters for each unlicensed spectrum, such as a listening policy (LBE listening policy or FBE listening policy), CCA threshold, and listening interval. Or a competition window, etc. Further, the contention parameters corresponding to each unlicensed spectrum are sent to the base station in the cell 17, so that the contention parameters of the unlicensed spectrum may change as the network changes, such as the number of devices competing for an unlicensed spectrum. When there are few, the CCA threshold corresponding to the unlicensed spectrum may be set relatively larger, and the listening interval or the contention window may be set relatively small, so that the utilization of the unlicensed spectrum can be effectively improved. Of course, in order to clearly explain the technical idea of the present application, FIG. 2 is only an exemplary description of the base station side as an example, but those skilled in the art should understand that the above technical solution is also applicable on the terminal side, and the principle is similar. I will not repeat them here.

The method for performing the scenario shown in FIG. 2 is described in detail below with reference to a specific embodiment. However, those skilled in the art should understand that the following method can also be applied to spectrum competition on the terminal side.

FIG. 3 is a signaling flowchart of a method for competing for a license-free spectrum according to an embodiment of the present application. In Figure 3, the LBE listening strategy is used by default to listen to the unlicensed spectrum. As shown in FIG. 3, the method includes the following signaling process:

S1a. The terminal sends the use of the unlicensed spectrum to the base station to which the terminal belongs.

S1b, the base station carries the use of the unlicensed spectrum in the cell in which it is located in the spectrum usage message and sends it to the LAA control entity.

S1c, other devices send the use of the license-free spectrum to the LAA control entity.

S2. The LAA controlling entity determines the competition parameters of the license-free spectrum according to the usage of the unlicensed spectrum.

S3. The LAA control entity carries the unlicensed spectrum and the contention parameters of the unlicensed spectrum in the first notification message and sends the parameters to the base station.

S4. The base station sends, according to the first notification message, the target unlicensed spectrum and the contention parameter of the target unlicensed spectrum to the terminal in the cell.

Other devices involved in this embodiment include, but are not limited to, communication devices including other operators.

In this embodiment, the base station and other devices carry the use of the unlicensed spectrum in the area in the real-time or periodic manner in the spectrum usage message to the LAA control entity, where necessary for the use of the license-free spectrum is included. The unused license-free spectrum, optionally, can also include the time and duration of the unlicensed spectrum, as well as the unlicensed spectrum that cannot be used.

Specifically, after receiving the spectrum usage message sent by multiple base stations and other devices, the LAA control entity collects statistics on the usage of each license-exempt spectrum, and determines the number of devices that compete for each license-free spectrum. Further, the LAA control entity further configures a competition parameter for each license-free spectrum according to a mapping relationship between the preset number of devices and the competition parameter, and carries the unlicensed spectrum and the competition parameters of the license-free spectrum. A notification message is sent to the base station, and the base station then participates in the target unlicensed spectrum of the competition, and the contention parameters of the target unlicensed spectrum are sent to the terminal under the cell where the base station is located. That is to say, this embodiment can be exemplarily expressed as the competition parameter of the license-free spectrum is related to the number of devices competing for the license-free spectrum. The competition parameter of the license-free spectrum includes a CCA threshold, and optionally includes a listening parameter, where the listening parameter includes a contention window. Or the listening interval, the listening interval includes the COT and the IDP. In this embodiment, the LBE listening policy is exemplarily adopted, so the listening parameter includes a contention window.

For example, when the number of devices competing for the unlicensed spectrum is small, the CCA threshold corresponding to the unlicensed spectrum may be set to be relatively larger, and the listening interval of the unlicensed spectrum or the competition window may be set relatively. Smaller, this can effectively improve the utilization of the license-free spectrum. Of course, the description is only for example, and is not specifically limited to the foregoing mapping relationship. In fact, the mapping relationship may be specifically set according to requirements, and the embodiment is not limited herein.

Optionally, when the spectrum usage message received by the LAA control entity includes information about the time and duration of the unlicensed spectrum used by the base station, and the information of the unlicensed spectrum that the base station cannot use, the LAA control entity uses the time and time of the unlicensed spectrum according to the base station. The duration, and the information of the unlicensed spectrum that the base station cannot use, determines the priority of the base station in each of the unlicensed spectrums, and carries the priority information in the first notification message and sends the information to the base station. For example, when the base station a uses the unlicensed spectrum A for a long time and has a long duration, the priority of the base station a in the license-free spectrum A is set higher, so that the base station a can easily compete for the license-free. The right to use spectrum A. For another example, if the base station a cannot use the unlicensed spectrum B, the priority information of the base station a is not included in the base station priority corresponding to the unlicensed spectrum B. Of course, this is merely an illustration and not a limitation of the invention.

Optionally, after receiving the first notification message, the base station in the embodiment may include the following execution manners:

In a possible design, after receiving the first notification message, the base station randomly determines an unlicensed spectrum from the plurality of unlicensed spectrums involved in the first notification message as the target unlicensed spectrum. And competing to use the target unlicensed spectrum according to the competition parameter corresponding to the target license-free spectrum in the first notification message.

In another possible design, the first notification message also includes the number of devices participating in the competition for each unlicensed spectrum. In this scenario, for the unlicensed spectrum, the smaller the number of devices participating in the competition, the easier it is to preempt, and the co-channel interference is relatively small. Therefore, after receiving the first notification message, the base station preferably, According to the number of devices corresponding to each license-free spectrum carried in the first notification message, the minimum number of corresponding devices is selected from the license-free spectrum, and the available spectrum is used as the target license-free spectrum. In this embodiment, after the target unlicensed spectrum is determined, the target unlicensed spectrum can be used in two ways: one way is to compete for the target unlicensed spectrum directly according to the competitive parameters of the target unlicensed spectrum, and the other is In the mode, the base station first adjusts the CCA threshold of the target unlicensed spectrum according to the mapping relationship between the preset number of devices and the CCA threshold, and then according to the adjusted CCA threshold and the first notification message. The competition window carried in the competition uses the target unlicensed spectrum. For example, when the number of devices corresponding to the target unlicensed spectrum is lower than the preset number, the corresponding CCA threshold of the target unlicensed spectrum may be increased in the first notification message, and the specific increased value depends on the number of devices. The degree of deviation from the preset number. In this way, the probability of successful preemption can be improved under the premise of ensuring normal transmission, thereby achieving the purpose of improving the utilization rate of the license-free frequency.

In yet another possible design, the first notification message includes priority information of the base station in the unlicensed spectrum, and the higher the priority of the base station in the unlicensed spectrum, the easier it is to preempt the unlicensed spectrum. Therefore, after receiving the first notification message, the base station determines the unlicensed spectrum with the highest priority as the target license-free spectrum. This can effectively improve the preemption success rate of the base station. Further, after determining the target unlicensed spectrum, the base station may directly compete for the target unlicensed spectrum according to the corresponding contention parameter in the first notification message of the target unlicensed spectrum. Optionally, the base station may first adjust the CCA threshold of the target unlicensed spectrum according to a mapping relationship between the preset competition priority and the CCA threshold, and compete according to the adjusted CCA threshold. Make Use the target unlicensed spectrum. For example, when the base station has a higher priority in the target unlicensed spectrum than the preset level, the CCA threshold corresponding to the target unlicensed spectrum may be increased, and the specific increased value depends on the base station in the target unlicensed spectrum. The difference between the competition priority and the preset level. In this way, the probability of successful preemption can be improved under the premise of ensuring normal transmission, thereby achieving the purpose of improving the utilization rate of the license-free frequency.

It should be noted that the embodiment is only an example of the LBE listening policy, but the case of adopting the FBE listening policy in practical applications is similar, and the difference is in the case of using the FBE listening policy. The CSA threshold and the listening interval are included in the competition parameters of the license-free spectrum, and are not described here.

In addition, due to the listening policy of the LBE that is adopted by default in this embodiment, it is not necessary to separately determine the listening policy of the target unlicensed spectrum, and in this embodiment, the contention parameter of the license-free spectrum includes a listening parameter, that is, a contention window. Therefore, even in the case of the default listening policy (LBE listening policy or FBE listening policy), the base station can base the specific listening parameters, ie, the contention window or the COT and IDP, and the CCA of the target unlicensed spectrum. Threshold values to compete for the target unlicensed spectrum. In the scenario where the listening policy is not fixed and the competition parameters of the license-free spectrum do not include the listening parameters, optionally, the base station may determine the listening strategy of the target unlicensed spectrum according to the number of devices of the unlicensed spectrum of the competitive target. For example, when the number of devices competing for the target unlicensed spectrum is lower than a preset threshold, the LBE listening policy is adopted, and vice versa, the FBE listening strategy is adopted. Of course, this is merely an example and not a sole limitation of the present application.

Optionally, in this embodiment, the listening policy of each unlicensed spectrum may also be configured by the LAA control entity and then sent to the base station. For example, when the number of the contending devices corresponding to the unlicensed spectrum is less than the preset threshold, the interception policy of the unlicensed spectrum is configured as an LBE listening policy, otherwise configured as an FBE listening policy, and the base station is exempted according to the license. The method for determining the listening policy for the number of devices corresponding to the spectrum is similar, and will not be described here.

Similarly, the CCA threshold of the unlicensed spectrum in this embodiment may also be configured by the LAA controlling entity according to the number of devices competing for the unlicensed spectrum. For example, when the number of devices competing for the unlicensed spectrum is small, the The CCA threshold of the licensed spectrum is set relatively larger, so that the competition success rate of the unlicensed spectrum can be increased, thereby increasing the spectrum utilization rate. As for the mapping relationship between the number of devices and the CCA threshold, The embodiment is not limited.

Optionally, in this embodiment, the contention parameter of the license-free spectrum may further include a listening parameter corresponding to the listening policy. For example, when the listening policy of the license-free spectrum is an LBE listening policy, the contention parameter is used. The contention window is included. When the listening policy of the license-free spectrum is the FBE listening policy, the contention interval includes the listening interval. The contention window or listening interval involved herein is determined by the LAA Control Entity based on the number of devices competing for the unlicensed spectrum. Of course, in the actual scenario, the contention parameter may not include the interception parameter. In this case, the base station according to the interception policy of the unlicensed spectrum carried in the first notification message, the CCA threshold, and the FBE interception in the prior art. The listening interval corresponding to the policy, or the contention window corresponding to the LBE listening policy, competes to use the unlicensed spectrum.

The specific competition process in this embodiment is similar to the prior art and will not be described here.

In this embodiment, since the contention parameters received by the base station are flexibly set according to the number of devices that compete for the unlicensed spectrum, the spectrum competition is more adaptive to the network changes, such as the number of competing devices corresponding to a certain unlicensed spectrum. When the number of CCA thresholds corresponding to the unlicensed spectrum is relatively large, the preemption success rate of the unlicensed spectrum will be increased, and the utilization rate of the unlicensed spectrum will be corresponding. Improved.

FIG. 4 is a flowchart of a method for competing for a license-free spectrum according to an embodiment of the present disclosure. In FIG. 4, the LBE listening policy is used to listen to the license-free spectrum by default. As shown in FIG. 4, this embodiment is Based on the scheme shown in Figure 3, the following steps are included:

Step 201: The base station sends a spectrum usage message to the license assisted access LAA control entity, where the spectrum usage message includes usage of the unlicensed spectrum in the area where the base station is located.

Step 202: The base station receives a first notification message sent by the LAA control entity, where the first notification message includes at least an unlicensed spectrum and a contention parameter of the license-free spectrum, and the contention parameter of the license-free spectrum includes a CCA threshold value and a listening parameter. .

Step 203: The base station competes to use the target unlicensed spectrum according to the first notification message, and the target unlicensed spectrum is the spectrum included in the first notification message.

The execution manners of the steps 201-203 are similar to those of the embodiment shown in FIG. 3, and details are not described herein again.

In step 204, it is determined whether the content is successfully used and the target unlicensed spectrum is used. If not, step 205 is performed, and if yes, step 206 is performed.

Step 205: The base station determines whether the target unlicensed spectrum is a high frequency spectrum. If yes, step 208 is performed; otherwise, step 207 is performed.

In this embodiment, considering that the high frequency is introduced in the NR system, since the high frequency uses the directional transmission method to transmit data in the NR system, in the NR system, the spectrum competition in different directions does not affect each other, therefore, when When the target unlicensed spectrum is detected as a high frequency spectrum, a higher spectrum utilization rate can be ensured even if the value of the current listening parameter is kept unchanged. When the target unlicensed spectrum is occupied and the target unlicensed spectrum is not a high frequency spectrum, the preemption success rate of the target unlicensed spectrum can be improved by increasing the value of the listening parameter. In the actual application, the listening parameter includes a listening interval or a contention window. In this embodiment, the LBE listening policy is adopted by default. Therefore, the listening parameter is specifically a contention window. That is to increase the spectrum utilization by increasing the contention window.

Similarly, when the FBE listening strategy is adopted and the listening parameters include the listening interval, the spectrum utilization can be improved by increasing the value of the COT or COT and IDP in the listening interval.

Step 206: The base station determines, according to the local message and the interception parameter of the target unlicensed spectrum, the interception parameter when the target is used for the unlicensed spectrum, where the local message includes a radio link failure (RLF). The number and the Acknowledgement (ACK) message or the Non-Acknowledgement (NCK) message.

The ACK message and the NCK message involved in this embodiment are obtained by the base station according to an ACK message and/or an NCK message fed back by multiple terminals in the cell. For example, in an actual scenario, the base station may combine the feedback messages of multiple terminals and multiple scheduling units in the cell into an equivalent acknowledgement (ACK) message or an NCK message, for example, when receiving the feedback message. When the proportion of the NCK is greater than the preset threshold X%, the feedback message may be equivalent to an NCK message, and vice versa. Of course, the embodiment is only illustrated by the equivalent NCK. In the actual situation, the ACK message can be equivalently judged, and the equivalent judgment method is similar to the NCK, and details are not described herein again.

In this embodiment, when the local message of the base station includes an NCK message, and the number of RLFs of the base station is less than a preset threshold, the base station increases the value of the listening parameter of the target unlicensed spectrum, and the next time the contention uses the target unlicensed spectrum. At the same time, the competition is performed according to the increased listening parameters.

When the number of RLFs included in the local message of the base station and/or the base station is greater than or equal to a preset threshold The base station maintains the listening parameter of the target unlicensed spectrum unchanged or reduced, and uses the listening parameter that remains unchanged or reduced as the listening parameter when the target unlicensed spectrum is used for the next competition.

It should be noted that, since the LBE listening policy is adopted by default in this embodiment, the value of the listening parameter is changed by changing the size of the contention window, and the FBE listening strategy is used to compete the target surface licensed spectrum. When changing the value of the COT or COT and IDP in the listening interval, the value of the listening parameter is changed. However, whether it is changing the value of COT or changing the value of COT and IDP, it should ensure that IDP is not lower than 5% of COT.

In this embodiment, by determining the number of RLFs, it can be determined whether the cause of the NCK is caused by the target unlicensed spectrum being occupied, and if so, the collision is prevented by increasing the value of the listening parameter. Improve the transmission effect.

Step 207: The base station increases the value of the listening parameter of the target unlicensed spectrum, and uses the increased listening parameter as the listening parameter of the target unlicensed spectrum for the next competition.

Step 208: The base station maintains the value of the listening parameter of the target unlicensed spectrum unchanged or decreases, and uses the listening parameter that remains unchanged or reduced as the listening parameter of the target unlicensed spectrum for the next competition. In this embodiment, by determining whether the target unlicensed spectrum is a high frequency spectrum when the preemption fails, and increasing the value of the interception parameter of the target unlicensed spectrum when determining that the target unlicensed spectrum is not a high frequency, the preemption target is exempted. The success rate of the licensed spectrum increases the frequency utilization. In addition, when the preemption is successful, the equivalent NCK and the number of RLFs are determined by the feedback message in the spectrum occupation time. When the feedback message is equivalent to the NCK and the number of RLFs is less than the preset threshold, the target unlicensed spectrum is increased. The value of the listening parameter increases the success rate of preempting the target unlicensed spectrum and improves the frequency utilization.

A method for competing spectrum-free spectrum is also provided in the embodiment of the present application, in which the method

The LAA control function entity first configures the corresponding contention parameters for each unlicensed spectrum according to the number of devices corresponding to each unlicensed spectrum, and further allocates the corresponding unlicensed spectrum to the base station by means of a random configuration, and establishes the base station and the exemption. Corresponding relationship between the licensed spectrums, and further, the correspondence between the base station and the unlicensed spectrum, and the contention parameters of the unlicensed spectrum are carried in the first notification message and sent to the base station, and between the base station and the unlicensed spectrum The corresponding relationship, the unlicensed spectrum and the listening policy, the listening interval corresponding to the listening policy, or the contention window are sent to the terminal, so that the base station and the terminal cooperate to complete spectrum sensing and signal transmission.

In this embodiment, based on the number of devices competing for the unlicensed spectrum, the competition parameters of the license-free spectrum can be flexibly set, and the preemption success rate and utilization rate of the unlicensed spectrum can be improved. In particular, when the number of competing devices corresponding to the unlicensed spectrum is small, by setting the CCA threshold corresponding to the unlicensed spectrum to be relatively large, the probability of preemption increases, thereby improving the utilization of the unlicensed spectrum.

FIG. 5 is a schematic structural diagram of a communication device 10 according to an embodiment of the present disclosure. The communication device may be specifically a base station or a terminal. As shown in FIG. 5, the device includes: a transmitter 101, a receiver 102, and a processor 103. The processor 103 is coupled to the receiver 102 and the transmitter 101; the transmitter transmits a spectrum usage message to the license assisted access LAA control entity, the spectrum usage message including the use of the unlicensed spectrum in the area in which the first device is located; the receiver Receiving a license to access the first notification message sent by the LAA control entity, where the first notification message includes at least an unlicensed spectrum and a contention parameter for competing for the unlicensed spectrum, wherein the contention parameter is a LAA control entity Obtained according to spectrum usage message analysis; the processor competes to use the unlicensed spectrum according to the first notification message.

In this embodiment, the contention parameter includes at least an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, a listening policy, a listening parameter, and a contention priority of the first device in the license-free spectrum. One of them.

In this embodiment, the contention parameters include: a CCA threshold, a number of devices competing for the unlicensed spectrum, and a competition priority of the first device in the license-free spectrum; the processor also competes with the number of devices or the number of devices according to the CCA threshold. The mapping between priorities adjusts the CCA threshold in the competition parameters.

In this embodiment, the contention parameter includes: a CCA threshold value and a number of devices competing for the unlicensed spectrum; the processor determines a listening strategy of the unlicensed spectrum according to the number of devices corresponding to the unlicensed spectrum, and according to the interception strategy Compete with the CCA threshold to compete for unlicensed spectrum.

In this embodiment, the contention parameters include: a CCA threshold value and a listening policy; the competition parameter of the license-free spectrum further includes a listening strategy; the processor competes to use the unlicensed spectrum according to the listening policy and the CCA threshold. The first device of a device.

In this embodiment, the contention parameters of the license-free spectrum include: a CCA threshold value and a listening parameter, and the listening parameter includes a contention window or a listening interval; the processor competes for the target according to the CCA threshold value and the listening parameter. Licensed spectrum.

In this embodiment, when the processor successfully competes to use the unlicensed spectrum, the processor determines, according to the local message and the interception parameter of the unlicensed spectrum, the interception parameter when the next time the contention uses the unlicensed spectrum, wherein the local message The number of radio link failure RLFs and the acknowledgement ACK message or the non-acknowledgement NCK message are included.

In this embodiment, when the local message includes an NCK message, and the number of RLFs is less than a preset threshold, the processor increases the value of the listening parameter, and determines that the increased listening parameter is the next time the contention uses the unlicensed spectrum. The listening parameter of the time; when the number of the ACK message and/or the RLF in the local message is greater than or equal to the preset threshold, the processor reduces the value of the listening parameter or maintains the value of the listening parameter unchanged, and determines the reduced or The unchanged listening parameters are the listening parameters when the unlicensed spectrum is used for the next competition.

In this embodiment, when the processor does not successfully compete to use the unlicensed spectrum, the processor determines whether the unlicensed spectrum is a high frequency spectrum; if the unlicensed spectrum is a high frequency spectrum, the processor uses the current listening parameter as the next time The listening parameter when competing for the unlicensed spectrum; if the unlicensed spectrum is not the high frequency spectrum, the processor increases the value of the listening parameter, and determines that the increased listening parameter is the next time the contention uses the unlicensed spectrum. Listen to the parameters.

In the present embodiment, the listening interval is composed of the channel occupation time COT and the idle time IDP; the processor increases the listening interval by increasing the value of the COT or increasing the values of the COT and the IDP.

As an alternative design, the communication device 10 can include a processor and a memory, wherein the memory is used to store program code that implements the technical solution illustrated in FIG. 3 or FIG. 4, and the processor is configured to execute program code stored in the memory.

The device shown in FIG. 5 can perform the technical solution in the scenario shown in FIG. 3 or FIG. 4, and the execution manner and the beneficial effects are similar to those in FIG.

FIG. 6 is a schematic structural diagram of an LAA control device 20 according to an embodiment of the present disclosure. The LAA control device 20 may be an independent functional entity or a functional entity integrated in a base station. As shown in FIG. 6, the LAA control device 20 includes a transmitter 201, a receiver 202, and a processor 203. The processor 203 is coupled to the receiver 202 and the transmitter 201. The receiver 202 receives the spectrum transmitted by the first device and other devices. Using messages, the spectrum makes The message includes the use of the unlicensed spectrum; the processor 203 determines the contention parameter of the unlicensed spectrum according to the usage of the unlicensed spectrum; the transmitter 201 carries the unlicensed spectrum and the competition parameters of the license-free spectrum in the first notification The message is sent to the first device.

In this embodiment, the processor counts the number of devices competing for the unlicensed spectrum according to the received spectrum usage message, and determines the contention parameters of the license-free spectrum according to the number of devices.

In this embodiment, the first notification message further includes a correspondence between the first device and the unlicensed spectrum.

In this embodiment, the first device includes a base station and/or a terminal device.

As an optional design, the LAA control device 20 may include a processor and a memory, wherein the memory is used to store program code for implementing the technical solution shown in FIG. 3 or FIG. 4, and the processor is configured to run the program code stored in the memory. .

The device shown in FIG. 6 can perform the technical solution in the scenario shown in FIG. 3 or FIG. 4, and the execution manner and the beneficial effects thereof are similarly omitted herein.

An embodiment of the present application provides a contention-free spectrum competing device, where the device is integrated in a base station or a terminal, and the device includes:

a sending module, configured to send a spectrum usage message to the license assisted access LAA control entity, where the spectrum usage message includes usage of the unlicensed spectrum in the area where the first device is located;

a receiving module, configured to receive a first notification message sent by the LAX control entity, where the first notification message includes at least an unlicensed spectrum, and a contention parameter for competing for the unlicensed spectrum, where the contention parameter is a LAA control entity according to the The spectrum is obtained using message analysis;

The listening module is configured to compete for the unlicensed spectrum according to the first notification message.

In this embodiment, the contention parameters include an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, and a competition priority of the first device in the license-free spectrum.

In this embodiment, the apparatus further includes: an adjustment module, configured to adjust a CCA threshold value in the competition parameter according to a mapping relationship between the CCA threshold value and the number of devices or the competition priority.

In this embodiment, the interception module is configured to determine a listening strategy of the unlicensed spectrum according to the number of devices corresponding to the unlicensed spectrum; and compete to use the unlicensed spectrum according to the listening policy and the CCA threshold.

In this embodiment, the contention parameter of the license-free spectrum further includes a listening policy; the listening module is configured to compete to use the license-free spectrum according to the listening policy and the CCA threshold.

In this embodiment, the contention parameter of the license-free spectrum further includes: a listening parameter, the listening parameter includes a contention window or a listening interval, and the listening module is configured to compete for the target according to the CCA threshold value and the listening parameter. Licensed spectrum.

In this embodiment, the apparatus further includes: a first determining module, configured to determine, when the first device successfully competes to use the unlicensed spectrum, according to the local message and the interception parameter of the unlicensed spectrum, determine the next time the contention uses the unlicensed spectrum The listening parameter, wherein the local message includes the number of radio link failure RLFs and an acknowledgement ACK message or a non-acknowledged NCK message.

In this embodiment, the first determining module is configured to include an NCK message in the local message, and when the number of the RLF is less than a preset threshold, increase the value of the listening parameter, and determine the increased listening parameter as the next time. Competing for listening parameters when using the unlicensed spectrum; and including the number of ACK messages and/or RLFs in the local message is greater than or equal to the preset At the threshold, the value of the listening parameter is lowered or the value of the listening parameter is kept unchanged, and the reduced or unchanged listening parameter is determined as the listening parameter when the next time the contention uses the unlicensed spectrum.

In this embodiment, the apparatus further includes: a second determining module, configured to determine, when the first device does not successfully compete to use the unlicensed spectrum, whether the unlicensed spectrum is a high frequency spectrum; if the unlicensed spectrum is a high frequency spectrum, The current listening parameter is used as the listening parameter when the unlicensed spectrum is used for the next competition; if the unlicensed spectrum is not the high frequency spectrum, the value of the listening parameter is increased, and the increased listening parameter is determined to be the next time. A listening parameter that competes when using an unlicensed spectrum.

In this embodiment, the listening interval is composed of a channel occupation time COT and an idle time IDP;

When the listening interval is included in the listening parameter, the first determining module or the second determining module increases the listening interval by increasing the value of the COT or increasing the value of the COT and the IDP.

The device provided in this embodiment can be used to perform the technical solution shown in FIG. 3 or FIG. 4, and the execution manner and the beneficial effects are similar, and details are not described herein again.

The embodiment provides a control device, and the device includes:

a receiving module, configured to receive a spectrum usage message sent by the first device and other devices, where the spectrum usage message includes an unlicensed spectrum usage;

a determining module for determining a competition parameter of the unlicensed spectrum according to the use of the unlicensed spectrum;

The sending module is configured to carry the unlicensed spectrum and the contention parameter of the license-free spectrum in the first notification message and send the message to the first device.

In this embodiment, the determining module is configured to: the LAA control entity counts, according to the received spectrum usage message, the number of devices that compete for the unlicensed spectrum; and the LAA control entity determines the contention parameter of the license-free spectrum according to the number of devices.

In this embodiment, the first notification message further includes a correspondence between the first device and the unlicensed spectrum.

In this embodiment, the first device includes a base station and/or a terminal device.

The device provided in this embodiment can be used to perform the technical solution shown in FIG. 3 or FIG. 4, and the execution manner and the beneficial effects are similar, and details are not described herein again.

Embodiments of the present application also provide a non-transitory computer readable storage medium including instructions, such as a memory including instructions, which are executable by a processor to perform the above method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

A non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of a terminal device, enabling the terminal device to perform a method of competing for a license-free spectrum, the method comprising:

Transmitting a spectrum usage message to the grant assisted access LAA control entity, the spectrum usage message including usage of the unlicensed spectrum;

Receiving a license to access a first notification message sent by the LAA control entity, where the first notification message includes at least an unlicensed spectrum, and a contention parameter for competing for the unlicensed spectrum, wherein the contention parameter is the LAA Controlling the entity based on the spectrum usage message analysis;

According to the first notification message, the unlicensed spectrum is used in competition.

In the several 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 each embodiment of the present application 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 above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above software function parts can be stored in the storage unit. The storage unit includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform some of the steps of the methods described in various embodiments of the present application. The storage unit includes: one or more memories, such as a read-only memory (ROM), a random access memory (RAM), and an electrically erasable programmable read only memory (EEPROM). and many more. The storage unit may exist independently or may be integrated with the processor.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed, that is, the device is installed. The internal structure is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

It will be understood by those skilled in the art that the various numbers of the first, second, etc., which are referred to herein, are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application.

It will be understood by those skilled in the art that in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, without The implementation process of the embodiments of the present application should be constituting any limitation.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or contain one or more available media sets Data storage devices such as servers and data centers. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present application. range.

Claims (29)

A competition method for license-free spectrum, characterized in that it comprises: The first device sends a spectrum usage message to the license assisted access LAA control entity, where the spectrum usage message includes usage of the unlicensed spectrum in the area where the first device is located; Receiving, by the first device, the first notification message sent by the LAA control entity, where the first notification message includes at least an unlicensed spectrum, and a contention parameter for competing for the unlicensed spectrum, where the contention parameter is Obtained by the LAA control entity according to the spectrum usage message analysis; The first device competes to use the unlicensed spectrum according to the first notification message. The method according to claim 1, wherein the contention parameter includes at least an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, a listening policy, a listening parameter, and the One of the competition priorities of a device in the unlicensed spectrum. The method according to claim 2, wherein the contention parameter comprises: the CCA threshold value and the number of devices competing for the unlicensed spectrum; The first device competes to use the unlicensed spectrum according to the first notification message, and includes: Determining, by the first device, a listening policy of the license-free spectrum according to the number of devices corresponding to the license-free spectrum; The first device competes to use the unlicensed spectrum according to the listening policy and the CCA threshold. The method according to claim 2, wherein the contention parameter comprises: the CCA threshold value and the interception strategy; The first device competes to use the unlicensed spectrum according to the first notification message, and includes: The first device competes to use the unlicensed spectrum according to the listening policy and the CCA threshold. The method according to claim 2, wherein the contention parameter of the unlicensed spectrum includes: the CCA threshold value and the listening parameter, and the listening parameter comprises a contention window or a listening interval; The first device competes to use the unlicensed spectrum according to the first notification message, and includes: The first device competes to use the target licensed spectrum according to the CCA threshold value and the listening parameter. The method according to any one of claims 1 to 5, wherein the contention parameter comprises: the CCA threshold value, a number of devices competing for the unlicensed spectrum, and the first device in the Determining the contention priority in the unlicensed spectrum; before the first device competes to use the unlicensed spectrum according to the first notification message, the method further includes: The first device adjusts a CCA threshold value in the contention parameter according to a mapping relationship between a CCA threshold value and a number of devices or a competition priority. The method of claim 5, wherein the method further comprises: If the first device successfully competes to use the unlicensed spectrum, the first device determines, according to the local message and the interception parameter of the unlicensed spectrum, a listening parameter when the next unlicensed spectrum is used for competition, The local message includes the number of radio link failure RLFs and an acknowledgement ACK message or a non-acknowledgment NCK message. The method according to claim 7, wherein the first device determines, according to the local message and the interception parameter of the unlicensed spectrum, the interception parameter when the next time the contention uses the unlicensed spectrum, including: If the local message includes the NCK message, and the number of the RLF is less than a preset threshold, the first device increases the value of the listening parameter, and determines that the increased listening parameter is next time. Competitive use of the exemption Listening parameters when spectrum is available; If the number of the ACK message and/or the RLF is greater than or equal to the preset threshold, the value of the listening parameter is decreased or the value of the listening parameter is kept unchanged, and determined. The reduced or unchanged listening parameter is the listening parameter when the unlicensed spectrum is used for the next competition. The method of claim 5, wherein the method further comprises: If the first device does not successfully compete to use the unlicensed spectrum, the first device determines whether the unlicensed spectrum is a high frequency spectrum; If the unlicensed spectrum is a high frequency spectrum, the first device uses the current listening parameter as a listening parameter when the unlicensed spectrum is used for the next competition; If the unlicensed spectrum is not a high frequency spectrum, the first device increases the value of the listening parameter, and determines that the increased listening parameter is a listening parameter when the unlicensed spectrum is used for the next competition. . The method according to claim 8 or 9, wherein the listening interval is composed of a channel occupation time COT and an idle time IDP; When the listening parameter includes a listening interval, the first device increases the value of the listening parameter, including: Increasing the value of the COT or increasing the value of the COT and the IDP. The method according to any of the claims 1-10, characterized in that the first device comprises a base station and/or a terminal device. A competition method for license-free spectrum, characterized in that it comprises: The LAA control entity receives a spectrum usage message sent by the first device and other devices, where the spectrum usage message includes usage of the unlicensed spectrum; Determining, by the LAA control entity, a contention parameter of the unlicensed spectrum according to the usage of the unlicensed spectrum; The LAA control entity carries the unlicensed spectrum and the contention parameters of the unlicensed spectrum in a first notification message and sends the content to the first device. The method according to claim 12, wherein the LAA control entity determines the contention parameters of the unlicensed spectrum according to the usage of the unlicensed spectrum, including: The LAA control entity counts the number of devices competing for the unlicensed spectrum according to the received spectrum usage message; The LAA control entity determines a competition parameter of the license-free spectrum according to the number of devices. The method according to claim 13, wherein the first notification message further includes a correspondence between the first device and the unlicensed spectrum. Method according to any of the claims 12-14, characterized in that the first device comprises a base station and/or a terminal device. A communication device, comprising: a transmitter, a receiver, and a processor, the processor being coupled to the receiver and the transmitter; Transmitting, by the transmitter, a spectrum usage message to a grant assisted access LAA control entity, where the spectrum usage message includes usage of an unlicensed spectrum in an area where the first device is located; Receiving, by the receiver, a first notification message sent by the LAA control entity, the first notification message including at least an unlicensed spectrum, and a competition parameter for competing for the unlicensed spectrum, wherein the competition The contention parameter is obtained by the LAA control entity according to the spectrum usage message analysis; The processor competes to use the unlicensed spectrum according to the first notification message. The communication device according to claim 16, wherein the contention parameter includes at least an idle channel evaluation CCA threshold, a number of devices competing for the unlicensed spectrum, a listening policy, a listening parameter, and the One of the contention priorities of the first device in the unlicensed spectrum. The communication device according to claim 17, wherein said contention parameter comprises: said CCA threshold value and said number of devices competing for said unlicensed spectrum; said processor corresponding to said unlicensed spectrum The number of devices, determining a listening policy of the unlicensed spectrum, and competing to use the unlicensed spectrum according to the listening policy and the CCA threshold. The communication device according to claim 17, wherein the contention parameter comprises: the CCA threshold value and the interception policy; The processor competes to use the unlicensed spectrum according to the listening policy and the CCA threshold. The communication device according to claim 17, wherein the contention parameter of the license-free spectrum includes: the CCA threshold value and the listening parameter, and the listening parameter includes a contention window or a listening interval. ; The processor competes to use the target licensed spectrum according to the CCA threshold and the listening parameter. The communication device according to any one of claims 16 to 20, wherein the contention parameter comprises: the CCA threshold value, a number of devices competing for the unlicensed spectrum, and the first device is The competition priority in the unlicensed spectrum; the processor further adjusts the CCA threshold value in the contention parameter according to a mapping relationship between the CCA threshold value and the number of devices or the competition priority. The communication device according to claim 20, wherein when said processor successfully competes to use said unlicensed spectrum, said processor determines the next message based on a local message and a listening parameter of said unlicensed spectrum A listening parameter when the contention is used for the unlicensed spectrum, wherein the local message includes the number of radio link failure RLFs and an acknowledgement ACK message or a non-acknowledgment NCK message. A communication device according to claim 22, wherein When the local message includes the NCK message, and the number of the RLF is less than a preset threshold, the processor increases the value of the listening parameter, and determines that the increased listening parameter is the next competition. a listening parameter when the unlicensed spectrum is used; The processor decreases a value of the listening parameter or maintains a value of the listening parameter when the local message includes the ACK message and/or the number of the RLF is greater than or equal to the preset threshold. Unchanged, it is determined that the reduced or unchanged listening parameter is the listening parameter when the unlicensed spectrum is used for the next competition. A communication device according to claim 20, wherein When the processor does not successfully compete to use the unlicensed spectrum, the processor determines whether the unlicensed spectrum is a high frequency spectrum; If the unlicensed spectrum is a high frequency spectrum, the processor uses the current listening parameter as a listening parameter when the unlicensed spectrum is used for the next competition; If the unlicensed spectrum is not a high frequency spectrum, the processor increases the value of the listening parameter, and determines that the increased listening parameter is a listening parameter when the unlicensed spectrum is used for the next competition. The communication device according to claim 23 or 24, wherein the listening interval is composed of a channel occupation time COT and an idle time IDP; The processor increases the listening interval by increasing the value of the COT or increasing the value of the COT and the IDP. An LAA control device, comprising: a transmitter, a receiver and a processor, the processor being coupled to the receiver and the transmitter; Receiving, by the receiver, a spectrum usage message sent by the first device and other devices, where the spectrum usage message includes usage of the unlicensed spectrum; Determining, by the processor, a contention parameter of the unlicensed spectrum according to the usage of the unlicensed spectrum; The transmitter carries the unlicensed spectrum and the contention parameters of the unlicensed spectrum in a first notification message and sends the content to the first device. The LAA control device according to claim 26, wherein the processor counts the number of devices competing for the unlicensed spectrum according to the received spectrum usage message, and determines the license-free according to the number of devices. Competitive parameters of the spectrum. The LAA control device according to claim 27, wherein the first notification message further includes a correspondence between the first device and the license-free spectrum. The LAA control device according to any one of claims 26 to 28, wherein the first device comprises a base station and/or a terminal device.

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