CN112312462A

CN112312462A - Unauthorized frequency band cell switching method, terminal and network side equipment

Info

Publication number: CN112312462A
Application number: CN201910697216.0A
Authority: CN
Inventors: 徐珉
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2021-02-02

Abstract

The invention provides a method, a terminal and network side equipment for switching an unauthorized frequency band cell, belonging to the technical field of wireless communication, wherein the method comprises the following steps: obtaining the information of the unauthorized frequency band channel measured by the network side equipment of the self-measurement and/or the adjacent cell; and generating switching decision information according to the unauthorized frequency band channel information, and sending the switching decision information to a terminal. The invention can not only reduce the power consumption of the terminal, but also ensure the service performance of the terminal after entering the target cell.

Description

Unauthorized frequency band cell switching method, terminal and network side equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, a terminal, and a network side device for cell handover in an unlicensed frequency band.

Background

Currently, the Third Generation Partnership project (3 GPP) has initiated research on the Unlicensed band (NR-U: NR in Unlicensed Spectrum) of the fifth Generation mobile communication technology (5G) -New Radio (NR) as an extension and supplement to the 5G NR. The initial intention of NR-U is to consider that licensed spectrum resources are limited, and to meet the traffic demands of seamless coverage and high data rate (large bandwidth), an NR protocol is used to provide access services in an unlicensed frequency band (including 2.4GHz, 3.5GHz, 5GHz, and the like), for example, when a terminal has large-traffic non-real-time traffic, the terminal can be carried by a cell in the unlicensed frequency band, and the pressure of the cell in the licensed frequency band is relieved. Due to the unlicensed nature of unlicensed spectrum, some countries or regions (e.g., european union, japan) require channel occupancy monitoring Before any communication is performed in unlicensed spectrum, i.e., communication can be performed after Listen-Before-Talk (LBT) is successful. Therefore, LBT failure will affect any air interface interworking (including control plane and user plane) in the cellular network protocol. For example, when LBT on a certain time-frequency Resource fails, system messages, access requests, Radio Resource Control (RRC) signaling, user data, and the like cannot be sent on the time-frequency Resource, which results in delay or failure of reception at the network side or the terminal side.

When the terminal is far from the serving cell or close to a better neighboring cell, handover is required to guarantee service performance. Therefore, the terminal needs to measure the serving cell and/or the neighboring cell, and report a measurement report to the serving cell when a certain condition is met, so that the serving cell makes a handover decision according to the measurement report.

It can be seen that the existing trigger condition for reporting the measurement report is based on the result measured by the receiving end of the terminal side, and due to the exclusivity of the authorized frequency band and the resource scheduling mechanism of the cellular network, the handover decision is made according to the result, so that the service performance of the terminal after entering the target cell can be effectively guaranteed. However, for the unlicensed frequency band, due to the unlicensed sharing characteristic and the LBT mechanism, the measurement report reporting based on the result measured by the terminal-side receiving end completely may cause unnecessary reporting and corresponding power consumption, and the handover decision based on the result measured by the terminal-side receiving end completely may not guarantee the service performance of the terminal after entering the target cell. As shown in fig. 1, a typical scenario is that when there are other operators or access points that are deployed by other operators or private persons and operate in an unlicensed frequency band near a serving cell or a neighboring cell in the unlicensed frequency band (generally referred to as a hidden node problem), a measurement quantity measured by a terminal may not reflect actual network performance of the cell, for example, the terminal may measure a stronger Reference Signal Received Power (RSRP) or a lower channel busy rate, but a channel is busy at a sending end of the serving cell or the neighboring cell due to the presence of other access points, so that an LBT success rate is low, and a service cannot be provided for a newly accessed terminal.

Disclosure of Invention

In view of the above, the present invention provides a cell switching method, a terminal and a network side device for an unlicensed frequency band, so as to solve the problem that, for the unlicensed frequency band, if a measurement report is triggered to be reported based on a result measured by a terminal side receiving end, unnecessary reporting may be caused, and/or if a switching decision is made based on a result measured by the terminal side receiving end, it is difficult to ensure service performance of the terminal after entering a target cell.

In order to solve the above technical problem, in a first aspect, the present invention provides an unlicensed frequency band cell handover method, applied to a network side device, including:

obtaining the information of the unauthorized frequency band channel measured by the network side equipment of the self-measurement and/or the adjacent cell;

generating switching decision information according to the unauthorized frequency band channel information, and sending the switching decision information to a terminal; or, the unlicensed frequency band channel information is sent to a terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information; or sending first indication information for reporting the measurement report or second indication information for not reporting the measurement report to the terminal according to the unlicensed frequency band channel information.

Optionally, the unlicensed frequency band channel information is obtained through layer 2 measurement.

Optionally, the unlicensed frequency band channel information includes at least one of the following parameters:

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the network side device obtains, through an interface between base stations, information of an unlicensed frequency band channel measured by the network side device of the adjacent cell.

Optionally, the step of generating handover decision information according to the unlicensed frequency band channel information includes:

and if the parameter value in the unauthorized frequency band channel information meets the switching condition, generating switching decision information comprising a switching instruction.

and if the parameter value in the unauthorized frequency band channel information does not meet the switching condition, listing the adjacent cell corresponding to the unauthorized frequency band channel information as a cell which is forbidden to be accessed, and generating switching decision information comprising the cell which is forbidden to be accessed.

Optionally, the handover decision information further includes a barring validity duration for the barring-accessed cell.

Optionally, the handover condition includes at least one of:

the parameter value in the unlicensed frequency band channel information measured by the network side equipment meets a first preset condition;

the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell meets a second preset condition;

the parameter value in the unlicensed frequency band channel information measured by the network side equipment meets a third preset condition, and the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell meets a fourth preset condition;

and a fifth preset condition is met between the parameter value in the unlicensed frequency band channel information measured by the network side equipment and the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell.

Optionally, the unlicensed frequency band channel information is sent to the terminal through at least one of RRC signaling and a reference signal.

In a second aspect, the present invention further provides a method for cell handover in an unlicensed frequency band, which is applied to a terminal, and includes:

receiving switching decision information sent by network side equipment, wherein the switching decision information is generated by the network side equipment according to unauthorized frequency band channel information; or,

receiving unauthorized frequency band channel information sent by network side equipment, and determining whether to send a measurement report according to the unauthorized frequency band channel information; or,

receiving first indication information or second indication information sent by a network side device, wherein the first indication information or the second indication information is generated according to unlicensed frequency band channel information, the first indication information is used for indicating the terminal to report a measurement report, and the second indication information is used for indicating the terminal not to report the measurement report;

the unlicensed frequency band channel information is obtained by measuring by the network side equipment and/or by measuring by the network side equipment of the adjacent cell.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the step of determining whether to send a measurement report according to the unlicensed frequency band channel information includes:

judging whether a parameter value in the unlicensed frequency band channel information meets a first measurement report reporting trigger condition or not;

and if the first measurement report reporting trigger condition is met, determining to send a measurement report.

Optionally, the first measurement report reporting trigger condition includes at least one of the following:

the parameter value in the unlicensed frequency band channel information measured by the network side equipment meets a sixth preset condition;

the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell meets a seventh preset condition;

the parameter value in the unlicensed frequency band channel information measured by the network side equipment meets an eighth preset condition, and the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell meets a ninth preset condition;

and a tenth preset condition is met between the parameter value in the unlicensed frequency band channel information measured by the network side equipment and the parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell.

judging whether a parameter value in the channel information of the unauthorized frequency band meets a first measurement report reporting trigger condition or not, and judging whether a parameter value measured by the terminal meets a second measurement report reporting trigger condition or not;

and if the parameter value in the unlicensed frequency band channel information meets the first measurement report reporting trigger condition and the parameter value measured by the terminal meets the second measurement report reporting trigger condition, determining to send a measurement report.

In a third aspect, the present invention further provides a network side device, including:

the acquisition module is used for acquiring the information of the unauthorized frequency band channel measured by the network side equipment of the self-measurement and/or the adjacent cell;

the decision module is used for generating switching decision information according to the unauthorized frequency band channel information and sending the switching decision information to a terminal; or, the first sending module is configured to send the unlicensed frequency band channel information to a terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information; or, the second sending module is configured to send, to the terminal, first indication information for reporting a measurement report or second indication information for not reporting a measurement report according to the unlicensed frequency band channel information.

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the decision module includes:

a first generating unit, configured to generate handover decision information including a handover instruction if a parameter value in the unlicensed frequency band channel information satisfies a handover condition.

Optionally, the decision module includes:

and a second generating unit, configured to, if a parameter value in the unlicensed frequency band channel information does not satisfy a handover condition, list, as a cell to which access is prohibited, an adjacent cell corresponding to the unlicensed frequency band channel information, and generate handover decision information including the cell to which access is prohibited.

Optionally, the handover condition includes at least one of:

In a fourth aspect, the present invention further provides a terminal, including:

the first receiving module is used for receiving switching decision information sent by network side equipment, wherein the switching decision information is generated by the network side equipment according to unauthorized frequency band channel information; or,

the receiving and judging module is used for receiving the unauthorized frequency band channel information sent by the network side equipment and determining whether to send a measurement report according to the unauthorized frequency band channel information; or,

a second receiving module, configured to receive first indication information or second indication information sent by a network side device, where the first indication information or the second indication information is generated according to unlicensed frequency band channel information, the first indication information is used to indicate the terminal to report a measurement report, and the second indication information is used to indicate the terminal not to report the measurement report;

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the receiving and determining module includes:

a first judging unit, configured to judge whether a parameter value in the unlicensed frequency band channel information satisfies a first measurement report reporting trigger condition;

a first determining unit, configured to determine to send a measurement report if the first measurement report reporting trigger condition is met.

Optionally, the receiving and determining module includes:

a second judging unit, configured to judge whether a parameter value in the unlicensed frequency band channel information satisfies a first measurement report reporting trigger condition, and judge whether a parameter value measured by the terminal satisfies a second measurement report reporting trigger condition;

a second determining unit, configured to determine to send a measurement report if a parameter value in the unlicensed frequency band channel information satisfies the first measurement report reporting trigger condition and a parameter value measured by the terminal satisfies the second measurement report reporting trigger condition.

In a fifth aspect, the present invention further provides a network side device, including: a transceiver and a processor;

the processor is used for acquiring the information of the unauthorized frequency band channel measured by the processor and/or the network side equipment of the adjacent cell;

the processor is further configured to generate switching decision information according to the unlicensed frequency band channel information, and the transceiver is configured to send the switching decision information to a terminal; or, the transceiver is configured to send the unlicensed frequency band channel information to a terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information; or, the transceiver is configured to send, to the terminal, first indication information for reporting a measurement report or second indication information for not reporting the measurement report according to the unlicensed frequency band channel information.

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor is configured to generate handover decision information including a handover instruction if a parameter value in the unlicensed frequency band channel information satisfies a handover condition.

Optionally, the processor is configured to, if the parameter value in the unlicensed frequency band channel information does not satisfy the handover condition, list, as a cell to which access is prohibited, an adjacent cell corresponding to the unlicensed frequency band channel information, and generate handover decision information including the cell to which access is prohibited.

Optionally, the handover condition includes at least one of:

In a sixth aspect, the present invention further provides a terminal, including: a transceiver and a processor;

the transceiver is used for receiving switching decision information sent by network side equipment, and the switching decision information is generated by the network side equipment according to unauthorized frequency band channel information; or,

the transceiver is used for receiving the unauthorized frequency band channel information sent by the network side equipment; the processor is used for determining whether to send a measurement report according to the unlicensed frequency band channel information; or,

the transceiver is configured to receive first indication information or second indication information sent by a network side device, where the first indication information or the second indication information is generated according to unlicensed frequency band channel information, the first indication information is used to indicate the terminal to report a measurement report, and the second indication information is used to indicate the terminal not to report the measurement report;

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor is configured to determine whether a parameter value in the unlicensed frequency band channel information meets a first measurement report reporting trigger condition; and if the first measurement report reporting trigger condition is met, determining to send a measurement report.

Optionally, the processor is configured to determine whether a parameter value in the unlicensed frequency band channel information satisfies a first measurement report reporting trigger condition, and determine whether a parameter value measured by the terminal satisfies a second measurement report reporting trigger condition; and if the parameter value in the unlicensed frequency band channel information meets the first measurement report reporting trigger condition and the parameter value measured by the terminal meets the second measurement report reporting trigger condition, determining to send a measurement report.

In a seventh aspect, the present invention further provides a network-side device, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements any one of the above methods for cell handover in an unlicensed frequency band applied to a network side device when executing the computer program.

In an eighth aspect, the present invention further provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements any one of the above-mentioned unauthorized frequency band cell switching methods applied to the terminal when executing the computer program.

In a ninth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in any one of the above methods for cell handover in unlicensed frequency band.

The technical scheme of the invention has the following beneficial effects:

1. in the embodiment of the invention, the network side equipment performs switching decision based on the unauthorized frequency band channel information measured by the network side equipment and/or the network side equipment of the adjacent cell, and the terminal does not need to perform measurement and report a measurement report, so that the power consumption of the terminal can be reduced, and the service performance of the terminal after entering the target cell can be ensured.

2. In the embodiment of the invention, the network side equipment sends the unauthorized frequency band channel information measured by the network side equipment and/or the network side equipment of the adjacent cell to the terminal, so that the terminal determines whether to send the measurement report according to the unauthorized frequency band channel information, unnecessary report caused by the fact that the terminal triggers the report of the measurement report only according to the measurement result of the terminal can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

3. In the embodiment of the invention, the network side equipment sends the first indication information for reporting the measurement report or the second indication information for not reporting the measurement report to the terminal according to the unauthorized frequency band channel information measured by the network side equipment of the adjacent cell and/or the self-measurement result, so that the unnecessary reporting caused by the fact that the terminal triggers the reporting of the measurement report according to the self-measurement result can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

Drawings

Fig. 1 is a schematic diagram of an unlicensed frequency band communication scenario;

fig. 2 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a first embodiment of the present invention;

fig. 3 is a flowchart illustrating an unlicensed frequency band cell handover method according to a second embodiment of the present invention;

fig. 4 is a flowchart illustrating an unlicensed frequency band cell handover method according to a third embodiment of the present invention;

fig. 5 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a fourth embodiment of the present invention;

fig. 6 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a fifth embodiment of the present invention;

fig. 7 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a sixth embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network-side device in a tenth embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal in an eleventh embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network-side device in a twelfth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal in a thirteenth embodiment of the present invention;

fig. 12 is a schematic structural diagram of a network-side device in a fourteenth embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal in fifteenth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

Referring to fig. 2, fig. 2 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to an embodiment of the present invention, where the method is applied to a network side device, and includes the following steps:

step 21: the network side equipment acquires the information of the unauthorized frequency band channel measured by the network side equipment and/or the network side equipment of the adjacent cell;

step 22: and the network side equipment generates switching decision information according to the unauthorized frequency band channel information and sends the switching decision information to a terminal.

The network side device may be a network side device of a serving cell, and specifically may be a serving cell base station.

In the embodiment of the invention, the network side equipment performs switching decision based on the unauthorized frequency band channel information measured by the network side equipment and/or the network side equipment of the adjacent cell, and the terminal does not need to perform measurement and report a measurement report, so that the power consumption of the terminal can be reduced, and the service performance of the terminal after entering the target cell can be ensured.

The following exemplifies the above-mentioned unlicensed band cell handover method.

That is, the network side device (of the serving cell) may obtain the unlicensed frequency band channel information through layer 2 measurement, and the network side device of the neighboring cell may also obtain the unlicensed frequency band channel information through layer 2 measurement.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Wherein the total measurement duration may be equal to a sum of a channel idle duration and a channel occupied duration.

In the embodiment of the present invention, the unlicensed frequency band channel information measured by the network side device (of the serving cell) includes at least one of the above parameters; the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell also includes at least one of the above parameters.

That is, the network side devices may interact the unlicensed frequency band channel information through an interface between base stations. Specifically, the inter-base station interface may be an Xn interface or an X2 interface.

That is, if the parameter value in the unlicensed frequency band channel information measured by the network-side device and/or the parameter value in the unlicensed frequency band channel information measured by the network-side device of the neighboring cell satisfy the handover condition, the network-side device (of the serving cell) determines to perform handover, otherwise, the neighboring cell may be listed as a cell prohibited from being accessed.

In addition, if the network-side device (of the serving cell) collects the unlicensed frequency band channel information measured by the network-side devices of the neighboring cells, and the neighboring cells are listed as cells prohibited from being accessed according to the handover condition, the handover decision information includes a list of cells prohibited from being accessed.

Further optionally, the handover decision information further includes a barring validity duration for the barring-accessed cell. That is, if the network side device (of the serving cell) lists the neighboring cell as a cell to which access is prohibited according to the parameter value in the unlicensed frequency band channel information that does not satisfy the handover condition, a valid time duration prohibition for the neighboring cell may be provided. During the forbidden validity period, the neighboring cell will not be the target cell for handover.

Optionally, the handover condition includes at least one of:

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is greater than or less than a first threshold. Here, the LBT success rate is only an example, and the parameters in the unlicensed frequency band channel information may also be an LBT failure rate, the number of LBT successes in a unit time, the number of LBT failures in a unit time, an average duration spent for LBT successes, a load level, a ratio of a channel idle duration to a total measurement duration, a ratio of a channel occupied duration to a total measurement duration, and the like.

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell is greater than or less than a second threshold.

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is smaller than or larger than a third threshold, and the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell is larger than or smaller than a fourth threshold.

A fifth preset condition is met between a parameter value in the unlicensed frequency band channel information measured by the network side equipment and a parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell;

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is less than or greater than the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell. For another example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is less than or greater than the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell, and the difference is greater than a fifth threshold.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for cell handover in an unlicensed frequency band according to a second embodiment of the present invention, where the method is applied to a network side device, and includes the following steps:

step 31: the network side equipment acquires the information of the unauthorized frequency band channel measured by the network side equipment and/or the network side equipment of the adjacent cell;

step 32: and the network side equipment sends the unauthorized frequency band channel information to a terminal, so that the terminal determines whether to send a measurement report according to the unauthorized frequency band channel information.

It should be noted that, after receiving the measurement report sent by the terminal, the network side device may make a switching decision according to the measurement report, or make a switching decision according to the measurement report in combination with the unlicensed frequency band channel information.

In addition, the network side device may be a network side device of a serving cell, and specifically may be a serving cell base station.

The embodiment of the present invention is mainly different from the first embodiment in that the network side device does not directly perform a handover decision according to the unlicensed frequency band channel information measured by the network side device of the neighboring cell and/or the self-measurement, but sends the unlicensed frequency band channel information to the terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information. And then the network side equipment carries out switching decision according to a measurement report sent by the terminal or according to the measurement report and the unauthorized frequency band channel information.

In the embodiment of the invention, the network side equipment sends the unauthorized frequency band channel information measured by the network side equipment and/or the network side equipment of the adjacent cell to the terminal, so that the terminal determines whether to send the measurement report according to the unauthorized frequency band channel information, unnecessary report caused by the fact that the terminal triggers the report of the measurement report only according to the measurement result of the terminal can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Referring to fig. 4, fig. 4 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a third embodiment of the present invention, where the method is applied to a network side device, and includes the following steps:

step 41: the network side equipment acquires the information of the unauthorized frequency band channel measured by the network side equipment and/or the network side equipment of the adjacent cell;

step 42: and the network side equipment sends first indication information for reporting a measurement report or second indication information for not reporting the measurement report to the terminal according to the channel information of the unlicensed frequency band.

It should be noted that, in some optional specific embodiments, if the terminal receives the first indication information, the terminal sends a measurement report to a network side device; in other optional specific embodiments, if the terminal receives the first indication information, it further needs to determine whether a measurement report needs to be sent according to measurement data obtained by its own measurement, and if it determines that a measurement report needs to be sent according to measurement data obtained by its own measurement, the terminal sends the measurement report, otherwise, the terminal does not send the measurement report. And if the terminal receives the second indication information, the terminal does not send a measurement report.

In addition, after receiving the measurement report sent by the terminal, the network side device may make a switching decision directly according to the measurement report, or may make a switching decision according to the measurement report and the unlicensed frequency band channel information.

The embodiment of the present invention is mainly different from the second embodiment in that: the network side equipment does not directly send the unauthorized frequency band channel information to the terminal, and then the terminal judges whether a measurement report needs to be sent or not according to the unauthorized frequency band channel information; the network side equipment judges whether the terminal is required to send the measurement report according to the channel information of the unauthorized frequency band, if so, the network side equipment sends first indication information to the terminal, if not, the network side equipment sends second indication information to the terminal, then the terminal sends the measurement report if receiving the first indication information or sends the measurement report if the self measurement data meets the reporting condition, and the terminal does not send the measurement report if receiving the second indication information.

In the embodiment of the invention, the network side equipment sends the first indication information for reporting the measurement report or the second indication information for not reporting the measurement report to the terminal according to the unauthorized frequency band channel information measured by the network side equipment of the adjacent cell and/or the self-measurement result, so that the unnecessary reporting caused by the fact that the terminal triggers the reporting of the measurement report according to the self-measurement result can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the step that the network side device sends, to the terminal, first indication information for reporting a measurement report or second indication information for not reporting a measurement report according to the unlicensed frequency band channel information includes:

the network side equipment judges whether a parameter value in the unlicensed frequency band channel information meets a preset condition or not;

if the preset condition is met, sending the first indication information; otherwise, sending the second indication information; wherein the preset condition comprises at least one of:

Referring to fig. 5, fig. 5 is a flowchart illustrating a method for cell handover in an unlicensed frequency band according to a fourth embodiment of the present invention, where the method is applied to a terminal, and includes the following steps:

step 51: the terminal receives switching decision information sent by network side equipment, wherein the switching decision information is generated by the network side equipment according to unauthorized frequency band channel information;

In the embodiment of the invention, a terminal receives switching decision information sent by network side equipment, and the switching decision information is generated by the network side equipment according to unauthorized frequency band channel information. That is, the network side device performs a handover decision based on the unlicensed frequency band channel information measured by the network side device of the neighboring cell and/or the self-measurement and/or the network side device of the neighboring cell and sends the generated handover decision information to the terminal, without the need of the terminal to perform measurement and report a measurement report, which not only reduces the power consumption of the terminal, but also ensures the service performance of the terminal after entering the target cell.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

In addition, how the network side device makes a handover decision according to the unlicensed frequency band channel information, and contents included in the handover decision information and the like may refer to the first embodiment, which is not described herein again.

The embodiments of the present invention provide technical solutions corresponding to the above embodiments and having the same inventive concept, and can achieve the same technical effects.

Referring to fig. 6, fig. 6 is a schematic flow chart of a method for cell handover in an unlicensed frequency band according to a fifth embodiment of the present invention, where the method is applied to a terminal and includes the following steps:

step 61: the terminal receives the information of the unauthorized frequency band channel sent by the network side equipment;

step 62: and the terminal determines whether to send a measurement report according to the unauthorized frequency band channel information, wherein the unauthorized frequency band channel information is obtained by the measurement of the network side equipment and/or the measurement of the network side equipment of the adjacent cell.

In the embodiment of the invention, the terminal receives the unauthorized frequency band channel information measured by the network side equipment and/or the network side equipment of the adjacent cell and determines whether to send the measurement report according to the unauthorized frequency band channel information, so that unnecessary reporting caused by the fact that the terminal triggers the reporting of the measurement report only according to the self measurement result can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

Optionally, the terminal obtains the unlicensed frequency band channel information by receiving an RRC signaling or reference information sent by a network side device.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

In some optional specific embodiments, the step of determining whether to send a measurement report according to the unlicensed frequency band channel information includes:

In addition, if the parameter value in the unlicensed frequency band channel information does not meet the first measurement report reporting trigger condition, determining not to send a measurement report.

Further optionally, the first measurement report reporting trigger condition includes at least one of:

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is greater than or less than a sixth threshold. Here, the LBT success rate is only an example, and the parameters in the unlicensed frequency band channel information may also be an LBT failure rate, the number of LBT successes in a unit time, the number of LBT failures in a unit time, an average duration spent for LBT successes, a load level, a ratio of a channel idle duration to a total measurement duration, a ratio of a channel occupied duration to a total measurement duration, and the like.

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell is greater than or less than a seventh threshold.

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is smaller than or greater than an eighth threshold, and the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell is larger than or less than a ninth threshold.

A tenth preset condition is met between a parameter value in the unlicensed frequency band channel information measured by the network side equipment and a parameter value in the unlicensed frequency band channel information measured by the network side equipment of the adjacent cell;

for example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is less than or greater than the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell. For another example, the LBT success rate in the unlicensed frequency band channel information measured by the network side device is less than or greater than the LBT success rate in the unlicensed frequency band channel information measured by the network side device of the neighboring cell, and the difference is greater than a tenth threshold.

In other optional specific embodiments, the step of determining whether to send a measurement report according to the unlicensed frequency band channel information includes:

In other optional embodiments, if the parameter value in the unlicensed frequency band channel information satisfies the first measurement report reporting trigger condition, but the parameter value measured by the terminal does not satisfy the second measurement report reporting trigger condition, it is determined not to send a measurement report. Or, if the parameter value measured by the terminal satisfies the second measurement report reporting trigger condition, but the parameter value in the unlicensed frequency band channel information does not satisfy the first measurement report reporting trigger condition, determining not to send a measurement report. Or, if the parameter value in the unlicensed frequency band channel information does not satisfy the first measurement report reporting trigger condition and the parameter value measured by the terminal does not satisfy the second measurement report reporting trigger condition, determining not to send a measurement report.

That is, the terminal not only determines whether to send the measurement report according to the unlicensed frequency band channel information, but also determines whether to send the measurement report according to its own measurement data.

Specifically, for a Long Term Evolution (LTE) system, the second measurement report reporting trigger condition is based on a Reference Signal Received Power (RSRP), a Reference Signal Received Quality (RSRQ), a Reference Signal to Interference plus Noise Ratio (RS-SINR), a Channel State Information Reference Signal (CSI-RS), a Channel busy rate, and the like of a serving cell and/or a neighboring cell measured by the terminal; for a New Radio (NR) system, the triggering condition for reporting the second measurement report is based on RSRP, RSRQ, RS-SINR, etc. of a serving cell and/or an adjacent cell measured by the terminal.

Referring to fig. 7, fig. 7 is a flowchart illustrating a method for cell handover in an unlicensed frequency band according to a sixth embodiment of the present invention, where the method is applied to a terminal and includes the following steps:

step 71: the terminal receives first indication information or second indication information sent by network side equipment, wherein the first indication information or the second indication information is generated according to unlicensed frequency band channel information, the first indication information is used for indicating the terminal to report a measurement report, and the second indication information is used for indicating the terminal not to report the measurement report;

In the embodiment of the invention, the terminal receives the first indication information or the second indication information sent by the network side equipment according to the channel information of the unlicensed frequency band (obtained by self measurement and/or obtained by measurement of the network side equipment of the adjacent cell), and determines whether to send the measurement report according to the first indication information or the second indication information, so that unnecessary reporting caused by the fact that the terminal triggers the reporting of the measurement report according to the self measurement result can be avoided, and the power consumption of the terminal is reduced. In addition, if the network side device performs a handover decision by combining the information of the unlicensed frequency band channel after receiving the measurement report reported by the terminal, the service performance of the terminal after entering the target cell can be ensured.

In addition, after the step of the terminal receiving the first indication information or the second indication information sent by the network side device, the method further includes:

if the terminal receives the first indication information, a measurement report is sent, or when the parameter value measured by the terminal meets the triggering condition of reporting a second measurement report, the measurement report is sent;

and if the terminal receives the second indication information, not sending a measurement report.

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

The embodiments of the present invention provide technical solutions corresponding to the third embodiment and having the same inventive concept, and can achieve the same technical effects, and reference may be made to the third embodiment in detail, which is not described herein again.

The seventh embodiment of the present invention provides a method for cell handover in an unlicensed frequency band, including the following steps:

1. the method comprises the steps that a serving cell base station and an adjacent cell base station collect and interact unauthorized frequency band channel information, and the unauthorized frequency band channel information comprises LBT failure rate of a serving cell base station sending end and LBT failure rate of an adjacent cell base station sending end.

2. If the LBT failure rate in the unlicensed frequency band channel information meets the following switching conditions, the serving cell base station judges to switch and generates switching decision information comprising a switching instruction:

the LBT failure rate of the base station sending end of the service cell is larger than a threshold value 1, and the LBT failure rate of the base station sending end of the adjacent cell is smaller than a threshold value 2.

3. And the service cell base station sends the switching decision information comprising the switching instruction to a terminal.

The eighth embodiment of the present invention provides a method for cell handover in an unlicensed frequency band, including the following steps:

2. If the LBT failure rate in the unlicensed frequency band channel information does not satisfy the following handover conditions, the serving cell base station lists the neighboring cells as cells to which access is prohibited, and generates handover decision information including the cells to which access is prohibited (i.e., the neighboring cells):

3. And the service cell base station sends switching decision information of the cell which is forbidden to be accessed to the terminal, wherein the switching decision information also comprises forbidden effective duration.

The ninth embodiment of the present invention provides a method for cell handover in an unlicensed frequency band, including the following steps:

2. And the service cell base station sends the information of the unauthorized frequency band channel to the terminal.

3. The terminal receives the unauthorized frequency band channel information sent by the service cell base station, and judges whether the unauthorized frequency band channel information meets the following conditions:

the LBT failure rate of a sending end of a base station of a service cell is larger than a threshold value 3, and the LBT failure rate of a sending end of a base station of an adjacent cell is smaller than a threshold value 4;

if the conditions are met, the terminal sends a measurement report to a serving cell base station;

otherwise, the terminal does not send the measurement report to the serving cell base station.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a network-side device according to a tenth embodiment of the present invention, where the network-side device 80 includes:

an obtaining module 81, configured to obtain information of an unlicensed frequency band channel measured by a network side device of a neighboring cell and/or by itself;

a decision module 82, configured to generate switching decision information according to the unlicensed frequency band channel information, and send the switching decision information to a terminal; or, the first sending module is configured to send the unlicensed frequency band channel information to a terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information; or, the second sending module is configured to send, to the terminal, first indication information for reporting a measurement report or second indication information for not reporting a measurement report according to the unlicensed frequency band channel information.

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the decision module 82 includes:

Optionally, the handover condition includes at least one of:

The embodiments of the present invention are product embodiments corresponding to the first, second, and third embodiments of the method, and therefore, detailed descriptions thereof are omitted, and please refer to the first, second, and third embodiments in detail.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a terminal according to an eleventh embodiment of the present invention, where the terminal 90 includes:

a first receiving module 91, configured to receive switching decision information sent by a network side device, where the switching decision information is generated by the network side device according to information of an unlicensed frequency band channel; or,

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the receiving and determining module includes:

The embodiments of the present invention are product embodiments corresponding to the fourth, fifth, and sixth embodiments of the method, and therefore, detailed descriptions thereof are omitted, and please refer to the fourth, fifth, and sixth embodiments.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a network-side device 100 according to a twelfth embodiment of the present invention, where the network-side device includes: a transceiver 101 and a processor 102;

the processor 102 is configured to obtain information of an unlicensed frequency band channel measured by the processor and/or measured by a network side device of an adjacent cell;

the processor 102 is further configured to generate switching decision information according to the unlicensed frequency band channel information, and the transceiver 101 is configured to send the switching decision information to a terminal; or, the transceiver 101 is configured to send the unlicensed frequency band channel information to a terminal, so that the terminal determines whether to send a measurement report according to the unlicensed frequency band channel information; or, the transceiver 101 is configured to send, to the terminal, first indication information for reporting a measurement report or second indication information for not reporting the measurement report according to the unlicensed frequency band channel information.

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor 102 is configured to generate handover decision information including a handover instruction if a parameter value in the unlicensed frequency band channel information meets a handover condition.

Optionally, the processor 102 is configured to, if the parameter value in the unlicensed frequency band channel information does not satisfy the handover condition, list, as a cell prohibited from being accessed, an adjacent cell corresponding to the unlicensed frequency band channel information, and generate handover decision information including the cell prohibited from being accessed.

Optionally, the handover condition includes at least one of:

Referring to fig. 11, fig. 11 is a schematic structural diagram of a terminal according to a thirteenth embodiment of the present invention, where the terminal 110 includes: a transceiver 111 and a processor 112;

the transceiver 111 is configured to receive handover decision information sent by a network side device, where the handover decision information is generated by the network side device according to unlicensed frequency band channel information; or,

the transceiver 111 is configured to receive unlicensed frequency band channel information sent by a network side device; the processor is used for determining whether to send a measurement report according to the unlicensed frequency band channel information; or,

the transceiver 111 is configured to receive first indication information or second indication information sent by a network side device, where the first indication information or the second indication information is generated according to unlicensed frequency band channel information, the first indication information is used to indicate the terminal to report a measurement report, and the second indication information is used to indicate the terminal not to report the measurement report;

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor 112 is configured to determine whether a parameter value in the unlicensed frequency band channel information meets a first measurement report reporting trigger condition; and if the first measurement report reporting trigger condition is met, determining to send a measurement report.

Optionally, the processor 112 is configured to determine whether a parameter value in the unlicensed frequency band channel information satisfies a first measurement report reporting trigger condition, and determine whether a parameter value measured by the terminal satisfies a second measurement report reporting trigger condition; and if the parameter value in the unlicensed frequency band channel information meets the first measurement report reporting trigger condition and the parameter value measured by the terminal meets the second measurement report reporting trigger condition, determining to send a measurement report.

Referring to fig. 12, fig. 12 is a schematic structural diagram of a network-side device according to a fourteenth embodiment of the present invention, where the network-side device 120 includes a processor 121, a memory 122, and a computer program stored in the memory 122 and capable of running on the processor 121; the processor 121, when executing the computer program, implements the following steps:

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor 121, when executing the computer program, may further implement the following steps:

the step of generating switching decision information according to the unlicensed frequency band channel information includes:

Optionally, the handover condition includes at least one of:

The specific working process of the embodiment of the present invention is the same as that of the first, second, and third embodiments of the method, and therefore, detailed description thereof is omitted here, and detailed description is given to the method steps of the first, second, and third embodiments.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a terminal according to a fifteenth embodiment of the present invention, where the terminal 130 includes a processor 131, a memory 132, and a computer program stored in the memory 132 and capable of running on the processor 131; the processor 131, when executing the computer program, implements the following steps:

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

Optionally, the processor 131, when executing the computer program, may further implement the following steps:

the step of determining whether to send a measurement report according to the unlicensed band channel information includes:

The specific working process of the embodiment of the present invention is the same as that of the fourth, fifth, and sixth embodiments of the method, and therefore, detailed description thereof is omitted here, and detailed description of the method steps in the fourth, fifth, and sixth embodiments of the present invention is referred to.

Sixteenth, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored thereon, and when the computer program is executed by a processor, the method for cell handover in an unlicensed frequency band according to any one of the first to sixth embodiments is implemented. Please refer to the above description of the method steps in the corresponding embodiments.

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

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

The computer-readable storage media described above, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A cell switching method of an unauthorized frequency band is applied to network side equipment and is characterized by comprising the following steps:

2. The method of claim 1, wherein the unlicensed band channel information is obtained through layer 2 measurement.

3. The method of claim 1, wherein the unlicensed band channel information comprises at least one of the following parameters:

listen before talk LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

4. The method according to claim 1, wherein the network side device obtains the unlicensed frequency band channel information measured by the network side device of the neighboring cell through an inter-base station interface.

5. The method according to claim 1, wherein the step of generating handover decision information according to the unlicensed frequency band channel information comprises:

6. The method according to claim 1 or 5, wherein the step of generating handover decision information according to the unlicensed frequency band channel information comprises:

7. The method of claim 6, wherein the handover decision information further comprises a barring validity duration for the cells with barring access.

8. The method of claim 5, wherein the handover condition comprises at least one of:

9. The method of claim 1, wherein the unlicensed band channel information is transmitted to the terminal through at least one of RRC signaling and a reference signal.

10. A cell switching method of an unauthorized frequency band is applied to a terminal, and is characterized by comprising the following steps:

11. The method according to claim 10, wherein the unlicensed band channel information includes at least one of the following parameters:

LBT success rate;

LBT failure rate;

the number of successful LBTs per unit time;

the number of LBT failures per unit time;

the average length of time it takes for LBT to succeed;

a load level;

the ratio of the channel idle duration to the total measurement duration;

the ratio of the channel occupied duration to the total measurement duration.

12. The method as claimed in claim 10, wherein the step of determining whether to transmit a measurement report according to the unlicensed band channel information comprises:

13. The method of claim 12, wherein the first measurement report reporting trigger condition comprises at least one of:

14. The method as claimed in claim 10, wherein the step of determining whether to transmit a measurement report according to the unlicensed band channel information comprises:

15. A network-side device, comprising:

16. A terminal, comprising:

17. A network-side device, comprising: a transceiver and a processor;

18. A terminal, comprising: a transceiver and a processor;

19. A network-side device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; the computer program is executed by the processor to implement the unlicensed band cell handover method according to any of claims 1 to 9.

20. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the computer program is executed by the processor to implement the unlicensed band cell handover method according to any of claims 10 to 14.

21. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps in the unlicensed band cell handover method according to any one of claims 1 to 14.