CN111436092A - Method, terminal and network side device for selecting a camping cell in an unlicensed frequency band - Google Patents

Abstract

The present invention provides a method, a terminal, and a network side device for selecting a camping cell in an unlicensed frequency band. The method includes: acquiring channel occupancy information on the unlicensed frequency band; In the embodiment of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting the camping cell in the unlicensed frequency band, so that the terminal in the idle state or the deactivated state selects a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

Description

Method, terminal and network side device for selecting a camping cell in an unlicensed frequency band

technical field

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

Background technique

The unlicensed frequency band is accessed through competition. Multiple terminals and base stations can preempt the channel on the same frequency resource. Before each transmission, it is necessary to monitor the blind idleness of the channel and confirm that the channel is idle. Terminals and base stations working on the unlicensed frequency band data can be sent.

In the prior art, the idle state and the deactivated state only consider the cell signal strength and signal quality (such as reference signal received power RSRP, reference signal received quality RSRQ) when the terminal selects the cell to camp on; in the process of the terminal selecting the cell to camp on According to the signal strength and signal quality of the cell, a certain cell is determined as the resident cell; however, if the cell signal is strong, but the channel occupancy rate is very high, the base station and the terminal are difficult to seize the opportunity to send data, then the The cell is not suitable for camping; therefore, the existing method for determining the camping cell is not accurate enough.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a method, terminal and network side device for selecting a camping cell in an unlicensed frequency band, so as to solve the problem of inaccurate camping of a cell in an unlicensed frequency band in the prior art.

In order to solve the above problem, an embodiment of the present invention provides a method for selecting a camping cell in an unlicensed frequency band, which is applied to a terminal, including:

Obtain channel occupancy information on unlicensed frequency bands;

According to the channel occupancy information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the obtaining the channel occupancy information on the unlicensed frequency band includes:

The received signal strength indication RSSI measurement is performed on the cells on the unlicensed frequency band, and the channel occupancy information on the unlicensed frequency band is obtained, wherein the channel occupancy information includes: at least one of RSSI, channel occupancy rate and channel idle rate.

Wherein, the obtaining the channel occupancy information on the unlicensed frequency band includes:

Receive channel occupancy information on an unlicensed frequency band sent by a network-side device, where the channel occupancy information includes at least one of: RSSI, channel occupancy rate, and channel idle rate.

Wherein, the method also includes:

Receive first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

The selecting a camping cell from the cells on the unlicensed frequency band according to the channel occupancy information includes:

According to the channel occupation information and the first threshold information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the method also includes:

Receive the load information of the cell on the unlicensed frequency band sent by the network side device;

The selecting a camping cell from the cells on the unlicensed frequency band according to the channel occupancy information and the first threshold information includes:

According to the channel occupancy information, the first threshold information and the load information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the method also includes:

Receive the configuration information of RSSI measurement sent by the network side device;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool;

The RSSI measurement of the received signal strength indication is performed on the cell on the unlicensed frequency band, and the channel occupancy information on the unlicensed frequency band is obtained, including:

The measurement is performed according to the configuration information of the RSSI measurement, and the channel occupancy information on the unlicensed frequency band is acquired.

Wherein, the method also includes:

receiving second threshold information sent by the network-side device, where the second threshold information includes: a range value of signal power;

The method also includes:

Cell reselection is performed according to at least one of the second threshold information and the channel occupancy information on the unlicensed frequency band, and the cell measurement result on the unlicensed frequency band.

An embodiment of the present invention also provides a method for selecting a camping cell in an unlicensed frequency band, which is applied to a network side device, including:

send channel occupancy information on the unlicensed band to the terminal; or,

Send first threshold information for cell camping to the terminal, where the first threshold information includes at least one of the following information:

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

Wherein, the method also includes:

The load information of the cells on the unlicensed frequency band is sent to the terminal.

Wherein, the method also includes:

Send the configuration information of RSSI measurement to the terminal;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool.

Wherein, the method also includes:

Send second threshold information to the terminal, where the second threshold information includes: a range value of signal power.

An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where the processor is configured to perform the following processes:

Obtain channel occupancy information on unlicensed frequency bands;

According to the channel occupancy information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the processor is also used for:

The received signal strength indication RSSI measurement is performed on the cells on the unlicensed frequency band, and the channel occupancy information on the unlicensed frequency band is obtained, wherein the channel occupancy information includes: at least one of RSSI, channel occupancy rate and channel idle rate.

Wherein, the transceiver is used for:

Receive channel occupancy information on an unlicensed frequency band sent by a network-side device, where the channel occupancy information includes at least one of: RSSI, channel occupancy rate, and channel idle rate.

Wherein, the transceiver is also used for:

Receive first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

The processor is also used to:

According to the channel occupation information and the first threshold information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the transceiver is also used for:

Receive the load information of the cell on the unlicensed frequency band sent by the network side device;

The processor is also used to:

According to the channel occupancy information, the first threshold information and the load information, a camping cell is selected from the cells on the unlicensed frequency band.

Wherein, the transceiver is also used for:

Receive the configuration information of RSSI measurement sent by the network side device;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool;

The processor is also used to:

The measurement is performed according to the configuration information of the RSSI measurement, and the channel occupancy information on the unlicensed frequency band is acquired.

Wherein, the transceiver is also used for:

receiving second threshold information for cell reselection sent by a network side device, where the second threshold information includes: a range value of signal power;

The processor is also used to:

Cell reselection is performed according to at least one of the second threshold information and the channel occupancy information on the unlicensed frequency band, and the cell measurement result on the unlicensed frequency band.

An embodiment of the present invention further provides a device for selecting a camping cell in an unlicensed frequency band, which is applied to a terminal, including:

An occupancy determination module, used to obtain channel occupancy information on an unlicensed frequency band;

The cell selection module is configured to select a camping cell from the cells on the unlicensed frequency band according to the channel occupation information.

An embodiment of the present invention further provides a network-side device, including a processor and a transceiver, where the processor is configured to control the transceiver to perform the following process:

send channel occupancy information on the unlicensed band to the terminal; or,

Send first threshold information for cell camping to the terminal, where the first threshold information includes at least one of the following information:

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

Wherein, the transceiver is also used for:

The load information of the cells on the unlicensed frequency band is sent to the terminal.

Wherein, the transceiver is also used for:

Send the configuration information of RSSI measurement to the terminal;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool.

Wherein, the transceiver is also used for:

Send second threshold information to the terminal, where the second threshold information includes: a range value of signal power.

An embodiment of the present invention further provides an apparatus for selecting a camping cell in an unlicensed frequency band, which is applied to network-side equipment, including:

A sending module, configured to send the channel occupancy information on the unlicensed frequency band to the terminal; or, used to send the first threshold information for cell camping to the terminal, where the first threshold information includes at least one of the following information :

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

Embodiments of the present invention further provide a computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, the steps in the above-mentioned method for selecting a camping cell in an unlicensed frequency band are implemented .

The above-mentioned technical scheme of the present invention has at least the following beneficial effects:

In the cell camping method, terminal, and network side device in an unlicensed frequency band according to the embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in the unlicensed frequency band, so that the terminal in an idle state or a deactivated state Select a more suitable cell for camping, improve the accuracy of cell selection and improve cell camping efficiency.

Description of drawings

FIG. 1 shows one of the flow charts of steps of a method for selecting a camping cell in an unlicensed frequency band provided by an embodiment of the present invention;

FIG. 2 shows the second flow chart of the steps of a method for selecting a camping cell in an unlicensed frequency band provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a terminal provided by an embodiment of the present invention;

4 shows one of the schematic structural diagrams of an apparatus for selecting a camping cell in an unlicensed frequency band provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a network side device provided by an embodiment of the present invention;

FIG. 6 shows the second schematic structural diagram of an apparatus for selecting a camping cell in an unlicensed frequency band according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1, an embodiment of the present invention provides a method for selecting a camping cell in an unlicensed frequency band, which is applied to a terminal, including:

Step 11: Obtain channel occupancy information on an unlicensed frequency band.

Step 12, according to the channel occupation information, select a camping cell from the cells on the unlicensed frequency band.

In this step, the cells on the unlicensed frequency band include: the serving cell of the terminal and the neighboring cells of the serving cell.

In the above-mentioned embodiment of the present invention, the channel occupancy information on the unlicensed frequency band can indicate the blind idleness of the channel; in the embodiment of the present invention, in the process of the terminal selecting the camping cell, since the unlicensed frequency band is accessed through competition, the The blind idleness of the channel is taken into consideration, that is, the blind idleness of the channel is used as a reference factor for cell camping, so that the terminal in the idle or deactivated state can select a more suitable cell for camping.

Further, in the above-mentioned embodiment of the present invention, step 12 includes:

First determine whether the cell measurement results on the unlicensed frequency band meet the camping conditions (the camping conditions are the same as those in the prior art, and will not be described in detail here); then for the cells that meet the camping conditions, according to the channel The occupancy information selects the camping cell.

Alternatively, modify the existing camping conditions and add channel occupancy information to the existing camping conditions. For example, the modified camping conditions include not only cell signal strength and signal quality, but also channel occupancy information.

Optionally, the cell measurement result includes at least: cell signal strength and signal quality, for example, reference signal received power RSRP and reference signal received quality RSRQ.

In short, the terminal in the idle state or the deactivated state comprehensively selects the camping cell according to the cell signal strength, cell signal quality and channel occupancy information, thereby improving the accuracy of selecting the camping cell.

How the terminal uses the channel occupancy information: the terminal measures to determine whether the cell measurement results meet the conditions for cell camping, and the terminal sorts the measurement results of all cells that meet the camping conditions according to certain rules. For example, the cell with the highest power is ranked the highest. ; The terminal determines the camping cell according to certain rules, such as camping on the cell with the highest ranking; when there are multiple cells with the highest ranking, camping on the cell with the lowest RSSI or the cell with the lowest channel occupancy rate or the cell with the highest channel vacancy rate .

As an example, step 11 includes:

Received signal strength indication RSSI measurement is performed on cells on the unlicensed frequency band, and channel occupancy information on the unlicensed frequency band is determined, wherein the channel occupancy information includes: at least one of RSSI, channel occupancy rate and channel idle rate.

As another embodiment, step 11 includes:

Receive channel occupancy information on an unlicensed frequency band sent by a network-side device, where the channel occupancy information includes at least one of: RSSI, channel occupancy rate, and channel idle rate.

Specifically, the channel occupancy information may be the channel occupancy rate of one channel or multiple (sub) channels; the channel occupancy rate may be represented by a percentage (for example, the percentage of the number of samples above a certain RSSI threshold), or, the channel occupancy rate It can be identified by several grades (eg 0-5, 0 is the lowest, indicating that the channel is the most idle; 5 is the highest, indicating that the channel is the busiest). In this case, it is necessary to exchange channel occupancy rate information between cells, for example, between NR base stations through the Xn interface or through the core network.

The embodiment of the present invention provides at least two solutions, which are:

Scheme 1, the terminal measures the channel occupancy information, and selects a camping cell according to the measured channel occupancy information;

Scheme 2: The network side equipment sends channel occupation information, and the terminal selects a camping cell according to the channel occupation information sent by the network side equipment.

For solution one, the method provided by the embodiment of the present invention further includes:

Receive first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

RSSI threshold;

a channel occupancy threshold value (in the form of a percentage) and a first RSSI value (dBm) for evaluating the channel occupancy;

a channel idle rate threshold value (in the form of a percentage) and a second RSSI value (dBm) for evaluating the channel idle rate;

Channel occupancy level and multiple RSSI values (dBm) for evaluating the channel occupancy level.

Correspondingly, step 12 includes:

According to the channel occupation information and the first threshold information, a camping cell is selected from the cells on the unlicensed frequency band.

Preferably, the network side device broadcasts the first threshold information of the current cell and the neighboring cell in the system message.

Among them, the RSSI threshold value represents the RSSI value required to camp in the cell or the frequency point; the RSSI threshold value can be the total received signal power within a certain measurement bandwidth, or the average of each RE (Resource Element, resource element) total received signal power.

How the terminal uses the RSSI threshold: the terminal receives the first threshold information in the broadcast message, the terminal compares its RSSI measurement result with the RSSI threshold, and when a certain condition is met, it considers that the cell can be camped or It can be used as a reselection candidate cell, otherwise it is considered that the cell cannot camp on or cannot be used as a reselection candidate cell. For example, when the "RSSI measured by the terminal" is less than the "RSSI threshold", it is considered that the cell can be camped on or can be used as a reselection candidate cell; or when the "RSSI measured by the terminal" is less than the "RSSI threshold + several offsets" Shift amount", it is considered that the cell can camp on or can be used as a reselection candidate cell.

Preferably, the channel occupancy threshold value represents the percentage of the number of samples higher than the first RSSI value, and the lower the channel occupancy measured by the terminal, the more idle the channel is. The first RSSI value may be the total received signal power within a certain measurement bandwidth, or the average total received signal power of each RE.

How the terminal uses the channel occupancy threshold value and the first RSSI value: the terminal receives the first threshold information in the broadcast message, the terminal performs RSSI measurement, and calculates the channel occupancy rate according to the first RSSI value, and the terminal will calculate the channel occupancy rate obtained by the terminal. The occupancy rate is compared with the channel occupancy rate threshold value. When a certain condition is met, the cell is considered to be a cell that can be camped on or can be used as a reselection candidate, otherwise it is considered that the cell cannot be camped or can not be used as a reselection candidate cell. For example, when the "channel occupancy rate measured by the terminal" is less than the "channel occupancy rate threshold value", it is considered that the cell can be camped on or can be used as a reselection candidate cell.

Preferably, the channel idle rate threshold value represents the percentage of the number of samples lower than the second RSSI value, and the higher the channel idle rate measured by the terminal, the more idle the channel is. The second RSSI value may be the total received signal power within a certain measurement bandwidth, or the average total received signal power of each RE.

How the terminal uses the channel idle rate threshold value and the second RSSI value: the terminal receives the first threshold information in the broadcast message, the terminal performs RSSI measurement, and calculates the channel idle rate according to the second RSSI value. The idle rate is compared with the channel idle rate threshold. When a certain condition is met, the cell is considered to be a cell that can be camped on or can be used as a reselection candidate; otherwise, it is considered that the cell cannot be camped or can not be used as a reselection candidate cell. For example, when the "channel idle rate measured by the terminal" is greater than the "channel idle rate threshold", it is considered that the cell can be camped on or can be used as a reselection candidate cell.

It should be noted that each threshold value in the first threshold information in the above-mentioned embodiment of the present invention may be one or more, if there is one, the terminal only receives one threshold; Multiple thresholds are received.

For example, different types of terminals correspond to different thresholds, for example, Internet of Things terminals, Internet of Vehicles terminals, and common handheld terminals have different thresholds. The terminal selects a threshold matching its own type to determine whether to camp in the cell; for another example, different network slices (network slicing) correspond to different thresholds. The terminal selects the threshold of the network slice that matches its own service requirements to determine whether to reside in the cell; for another example, different service levels correspond to different thresholds, for example, the terminal determines its own service level and selects the service level that matches its own service level. The threshold of judging whether to camp in the cell.

Further, for the first solution, the method provided by the embodiment of the present invention further includes:

Receive the load information of the cells on the unlicensed frequency band sent by the network side device; the load information needs to be exchanged between cells. For example, the NR base stations exchange load information through the Xn interface or exchange load information through the core network.

Correspondingly, selecting the camping cell from the cells on the unlicensed frequency band according to the channel occupancy information and the first threshold information includes:

According to the channel occupancy information, the first threshold information and the load information, a camping cell is selected from the cells on the unlicensed frequency band.

In short, a terminal in an idle or deactivated state can comprehensively select a camping cell not only based on the cell signal strength, cell signal quality and channel occupancy information, but also with reference to the load information of the cell, thereby improving the accuracy of selecting a camping cell.

For example, the terminal selects the cell with the smallest RSSI value, the lowest channel occupancy rate, or the highest channel vacancy rate among the cells with the same load as the camping cell; for another example, the terminal selects multiple cells with the smallest RSSI value, the lowest channel occupancy rate, or the highest channel vacancy rate. The cell with the lowest load among the cells is the camping cell.

Further, for the first solution, the method provided by the embodiment of the present invention further includes:

Receive the configuration information of RSSI measurement sent by the network side device;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information (resource pool) measured by RSSI, the resource pool information includes: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, and subchannel bandwidth included in the resource pool (used to indirectly determine the resource pool bandwidth) and the frequency domain position of the resource pool (for example, the offset from the anchor frequency, the anchor frequency can be the center frequency of the SSB of the cell); - the content of the resource pool information that needs to be exchanged between cells, such as NR The base stations interact through the Xn interface or through the core network;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool;

Correspondingly, perform RSSI measurement on the cell in the unlicensed frequency band, and obtain channel occupancy information on the unlicensed frequency band, including:

Perform RSSI measurement according to the configuration information of the RSSI measurement, and obtain channel occupancy information on the unlicensed frequency band.

In the embodiment of the present invention, the frequency domain resources and bandwidth of RSSI measurement in the configuration information of RSSI measurement may specifically be any of the following:

The frequency domain resources and bandwidth measured by RSSI are the same as the initial BWP (initial partial bandwidth) of the cell; in this case, the resource location and bandwidth of the initial BWP need to be exchanged between cells, for example, the NR base stations interact through the Xn interface or through the core network interact;

The frequency domain resources and bandwidth measured by RSSI are the same as the RMSI (remaining minimum system information, remaining minimum system information) of the cell; in this case, the resource location and bandwidth of the RMSI need to be exchanged between the cells, for example, the NR base stations interact through the Xn interface or interact through the core network;

The frequency domain resources and bandwidth measured by RSSI are the same as the carrier bandwidth of the cell; in this case, the carrier position and bandwidth of the cell need to be exchanged between cells, for example, the NR base stations interact through the Xn interface or through the core network.

It should be noted that, if the network side device is not configured with the frequency domain resources and bandwidth for RSSI measurement, the terminal adopts the default configuration, which is, for example, the same as the synchronization signal block SSB of the cell.

In this embodiment of the present invention, the time domain resources for RSSI measurement in the configuration information for RSSI measurement include: time slots for RSSI measurement and/or symbols for RSSI measurement.

If the network side device is not configured with time domain resources for RSSI measurement, the default configuration is adopted, for example, the same as the SMTC (SSB measurement timing configuration, SSB measurement timing configuration) of the cell, or a fixed 5ms. In this case, time domain resources for RSSI measurement are required to be exchanged between cells, for example, interaction between NR base stations through the Xn interface or through the core network.

In this embodiment of the present invention, the RSSI measurement resource pool measurement configuration information in the RSSI measurement configuration information is used to instruct the terminal to measure the entire resource pool, or to instruct the terminal to measure each subchannel in the resource pool. It is required to exchange the resource pool between cells to measure the content of the configuration information, for example, the NR base stations interact through the Xn interface or through the core network.

The method for the terminal to use the resource pool information and the resource pool measurement configuration information: the terminal receives the system information, and the terminal measures the resources in the indicated resource pool, such as RSSI and/or channel occupancy and/or channel idle for the entire resource pool rate measurement, or measure RSSI and/or channel occupancy rate and/or channel idle rate for each sub-channel in the resource pool.

Further, for the scheme one and the scheme two, the method provided by the above-mentioned embodiment of the present invention also includes:

Receive second threshold information for cell reselection sent by the network side device, where the second threshold information includes: a range value of signal power; for example, a cell within this range value can be used as the highest ranked candidate cell, The unit of value is dB.

The method also includes:

Cell reselection is performed according to at least one of the second threshold information and the channel occupancy information on the unlicensed frequency band, and the cell measurement result on the unlicensed frequency band.

How the terminal uses the second threshold information: the terminal receives the second threshold information, the terminal performs cell measurement, and determines whether the cell measurement result satisfies the cell camping condition; the terminal sorts the measurement results of all cells that meet the camping condition according to certain rules , for example, the cell with the highest power is ranked the highest; the terminal determines that the cell that meets the second threshold, for example, the difference between the power of the cell and the power of the cell with the highest ranking is less than the second threshold, indicating that the cell meets the second threshold. If there are multiple cells that meet the second threshold value, the re-selection cell is determined according to certain rules, for example, the cell is re-selected according to the channel quality occupancy information on the unlicensed frequency band: re-selection to the lowest RSSI value or the lowest channel occupancy rate or the channel is idle The cell with the highest rate, or the cell with the lowest load, or the cell with the lowest RSSI value, the lowest channel occupancy rate, or the highest channel vacancy rate among the cells with the same load, or the cell with the lowest RSSI value or the channel occupancy rate. The cell with the lowest load among the cells with the lowest or the same channel idle rate; if there are multiple cells with the same channel occupancy information in the cells meeting the second threshold, the cell with the highest ranking is reselected.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

As shown in FIG. 2 , an embodiment of the present invention further provides a method for selecting a camping cell in an unlicensed frequency band, which is applied to a network side device, including:

send channel occupancy information on the unlicensed band to the terminal; or,

Send first threshold information for cell camping to the terminal, where the first threshold information includes at least one of the following information:

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

In the embodiment of the present invention, the cells on the unlicensed frequency band include: a serving cell of the terminal and neighboring cells of the serving cell.

Specifically, the channel occupancy information may be the channel occupancy rate of one channel or multiple (sub) channels; the channel occupancy rate may be represented by a percentage (for example, the percentage of the number of samples above a certain RSSI threshold), or, the channel occupancy rate It can be identified by several grades (eg 0-5, 0 is the lowest, indicating that the channel is the most idle; 5 is the highest, indicating that the channel is the busiest). In this case, it is necessary to exchange channel occupancy rate information between cells, for example, between NR base stations through the Xn interface or through the core network.

In the above-mentioned embodiment of the present invention, the channel occupancy information on the unlicensed frequency band can indicate the blind idleness of the channel; in the embodiment of the present invention, in the process of the terminal selecting the camping cell, since the unlicensed frequency band is accessed through competition, the The blind idleness of the channel is taken into consideration, that is, the blind idleness of the channel is used as a reference factor for cell camping, so that the terminal in the idle or deactivated state can select a more suitable cell for camping.

The embodiment of the present invention provides at least two solutions, which are:

Scheme 1, the terminal measures the channel occupancy information, and selects a camping cell according to the measured channel occupancy information;

Scheme 2: The network side equipment sends channel occupation information, and the terminal selects a camping cell according to the channel occupation information sent by the network side equipment.

Preferably, the network side device broadcasts the first threshold information of the current cell and the neighboring cell in the system message, where the first threshold information is camping threshold information.

Among them, the RSSI threshold value represents the RSSI value required to camp in the cell or the frequency point; the RSSI threshold value can be the total received signal power within a certain measurement bandwidth, or the average of each RE (Resource Element, resource element) total received signal power.

How the terminal uses the RSSI threshold: the terminal receives the first threshold information in the broadcast message, the terminal compares its RSSI measurement result with the RSSI threshold, and when a certain condition is met, it considers that the cell can be camped or It can be used as a reselection candidate cell, otherwise it is considered that the cell cannot camp on or cannot be used as a reselection candidate cell. For example, when the "RSSI measured by the terminal" is less than the "RSSI threshold", it is considered that the cell can be camped on or can be used as a reselection candidate cell; or when the "RSSI measured by the terminal" is less than the "RSSI threshold + several offsets" Shift amount", it is considered that the cell can camp on or can be used as a reselection candidate cell.

Preferably, the channel occupancy threshold value represents the percentage of the number of samples higher than the first RSSI value, and the lower the channel occupancy measured by the terminal, the more idle the channel is. The first RSSI value may be the total received signal power within a certain measurement bandwidth, or the average total received signal power of each RE.

How the terminal uses the channel occupancy threshold value and the first RSSI value: the terminal receives the first threshold information in the broadcast message, the terminal performs RSSI measurement, and calculates the channel occupancy rate according to the first RSSI value, and the terminal will calculate the channel occupancy rate obtained by the terminal. The occupancy rate is compared with the channel occupancy rate threshold value. When a certain condition is met, the cell is considered to be a cell that can be camped on or can be used as a reselection candidate, otherwise it is considered that the cell cannot be camped or can not be used as a reselection candidate cell. For example, when the "channel occupancy rate measured by the terminal" is less than the "channel occupancy rate threshold value", it is considered that the cell can be camped on or can be used as a reselection candidate cell.

Preferably, the channel idle rate threshold value represents the percentage of the number of samples lower than the second RSSI value, and the higher the channel idle rate measured by the terminal, the more idle the channel is. The second RSSI value may be the total received signal power within a certain measurement bandwidth, or the average total received signal power of each RE.

How the terminal uses the channel idle rate threshold value and the second RSSI value: the terminal receives the first threshold information in the broadcast message, the terminal performs RSSI measurement, and calculates the channel idle rate according to the second RSSI value. The idle rate is compared with the channel idle rate threshold. When a certain condition is met, the cell is considered to be a cell that can be camped on or can be used as a reselection candidate; otherwise, it is considered that the cell cannot be camped or can not be used as a reselection candidate cell. For example, when the "channel idle rate measured by the terminal" is greater than the "channel idle rate threshold", it is considered that the cell can be camped on or can be used as a reselection candidate cell.

It should be noted that each threshold value in the first threshold information in the above-mentioned embodiment of the present invention may be one or more, if there is one, the terminal only receives one threshold; Multiple thresholds are received.

For example, different types of terminals correspond to different thresholds, for example, Internet of Things terminals, Internet of Vehicles terminals, and common handheld terminals have different thresholds. The terminal selects a threshold matching its own type to determine whether to camp in the cell; for another example, different network slices (network slicing) correspond to different thresholds. The terminal selects the threshold of the network slice that matches its own service requirements to determine whether to reside in the cell; for another example, different service levels correspond to different thresholds, for example, the terminal determines its own service level and selects the service level that matches its own service level. The threshold of judging whether to camp in the cell.

Further, for the first solution, the method provided by the embodiment of the present invention further includes:

Send the load information of the cells on the unlicensed frequency band to the terminal; the load information needs to be exchanged between cells. For example, load information is exchanged between NR base stations through the Xn interface or through the core network.

In short, a terminal in an idle or deactivated state can comprehensively select a camping cell not only based on the cell signal strength, cell signal quality and channel occupancy information, but also with reference to the load information of the cell, thereby improving the accuracy of the method for determining the camping cell. sex.

For example, the terminal selects the cell with the smallest RSSI value, the lowest channel occupancy rate, or the highest channel vacancy rate among the cells with the same load as the camping cell; for another example, the terminal selects multiple cells with the smallest RSSI value, the lowest channel occupancy rate, or the highest channel vacancy rate. The cell with the lowest load among the cells is the camping cell.

Further, for the first solution, the method provided by the embodiment of the present invention further includes:

Send the configuration information of RSSI measurement to the terminal;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool.

In the embodiment of the present invention, the frequency domain resources and bandwidth of RSSI measurement in the configuration information of RSSI measurement may specifically be any of the following:

The frequency domain resources and bandwidth measured by RSSI are the same as the initial BWP (initial partial bandwidth) of the cell; in this case, the resource location and bandwidth of the initial BWP need to be exchanged between cells, for example, the NR base stations interact through the Xn interface or through the core network interact;

The frequency domain resources and bandwidth measured by RSSI are the same as the RMSI (remaining minimum system information, remaining minimum system information) of the cell; in this case, the resource location and bandwidth of the RMSI need to be exchanged between the cells, for example, the NR base stations interact through the Xn interface or interact through the core network;

The frequency domain resources and bandwidth measured by RSSI are the same as the carrier bandwidth of the cell; in this case, the carrier position and bandwidth of the cell need to be exchanged between cells, for example, the NR base stations interact through the Xn interface or through the core network.

It should be noted that, if the network side device is not configured with the frequency domain resources and bandwidth for RSSI measurement, the terminal adopts the default configuration, which is, for example, the same as the synchronization signal block SSB of the cell.

In this embodiment of the present invention, the time domain resources for RSSI measurement in the configuration information for RSSI measurement include: time slots for RSSI measurement and/or symbols for RSSI measurement.

If the network side device is not configured with time domain resources for RSSI measurement, the default configuration is adopted, for example, the same as the SMTC (SSB measurement timing configuration, SSB measurement timing configuration) of the cell, or a fixed 5ms. In this case, time domain resources for RSSI measurement are required to be exchanged between cells, for example, interaction between NR base stations through the Xn interface or through the core network.

In this embodiment of the present invention, the RSSI measurement resource pool measurement configuration information in the RSSI measurement configuration information is used to instruct the terminal to measure the entire resource pool, or to instruct the terminal to measure each subchannel in the resource pool. It is required to exchange the resource pool between cells to measure the content of the configuration information, for example, the NR base stations interact through the Xn interface or through the core network.

The method for the terminal to use the resource pool information and the resource pool measurement configuration information: the terminal receives the system information, and the terminal measures the resources in the indicated resource pool, such as RSSI and/or channel occupancy and/or channel idle for the entire resource pool rate measurement, or measure RSSI and/or channel occupancy rate and/or channel idle rate for each sub-channel in the resource pool.

Further, for the scheme one and the scheme two, the method provided by the above-mentioned embodiment of the present invention also includes:

Send second threshold information for cell reselection to the terminal, where the second threshold information includes: a range value of signal power. For example, a cell within this range value can be regarded as the highest ranked candidate cell, and the unit of the range value is dB.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

As shown in FIG. 3, an embodiment of the present invention further provides a terminal, including a processor 300 and a transceiver 310, the terminal further includes a user interface 320, and the processor 300 is configured to perform the following processes:

Obtain channel occupancy information on unlicensed frequency bands;

According to the channel occupancy information, a camping cell is selected from the cells on the unlicensed frequency band.

Optionally, in the foregoing embodiment of the present invention, the processor 300 is further configured to:

The received signal strength indication RSSI measurement is performed on the cells on the unlicensed frequency band, and the channel occupancy information on the unlicensed frequency band is obtained, wherein the channel occupancy information includes: at least one of RSSI, channel occupancy rate and channel idle rate.

Optionally, in the foregoing embodiment of the present invention, the transceiver 300 is used for:

Receive channel occupancy information on an unlicensed frequency band sent by a network-side device, where the channel occupancy information includes at least one of: RSSI, channel occupancy rate, and channel idle rate.

Optionally, in the foregoing embodiment of the present invention, the transceiver 310 is further configured to:

Receive first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

The processor is also used to:

According to the channel occupation information and the first threshold information, a camping cell is selected from the cells on the unlicensed frequency band.

Optionally, in the foregoing embodiment of the present invention, the transceiver 310 is further configured to:

Receive the load information of the cell on the unlicensed frequency band sent by the network side device;

The processor is also used to:

According to the channel occupancy information, the first threshold information and the load information, a camping cell is selected from the cells on the unlicensed frequency band.

Optionally, in the foregoing embodiment of the present invention, the transceiver 310 is further configured to:

Receive the configuration information of RSSI measurement sent by the network side device;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool;

The processor is also used to:

The measurement is performed according to the configuration information of the RSSI measurement, and the channel occupancy information on the unlicensed frequency band is acquired.

Optionally, in the foregoing embodiment of the present invention, the transceiver 310 is further configured to:

receiving second threshold information for cell reselection sent by a network side device, where the second threshold information includes: a range value of signal power;

The processor is also used to:

Cell reselection is performed according to at least one of the second threshold information and the channel occupancy information on the unlicensed frequency band, and the cell measurement result on the unlicensed frequency band.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

It should be noted that the terminal provided by the embodiment of the present invention is a terminal capable of executing the above-mentioned method for selecting a camping cell in an unlicensed frequency band, and all the above-mentioned embodiments for selecting a camping cell in an unlicensed frequency band are applicable to the terminal, And all can achieve the same or similar beneficial effects.

As shown in FIG. 4 , an embodiment of the present invention further provides an apparatus for selecting a camping cell in an unlicensed frequency band, which is applied to a terminal, including:

An occupancy determination module 41, configured to acquire channel occupancy information on an unlicensed frequency band;

The cell selection module 42 is configured to select a camping cell from the cells in the unlicensed frequency band according to the channel occupation information.

Optionally, in the above embodiment of the present invention, the cell selection module includes:

a first measurement submodule, configured to determine whether the cell measurement result on the unlicensed frequency band satisfies the cell residency condition;

The first selection sub-module is used for selecting the camping cell according to the channel occupancy information for the cell that satisfies the cell camping condition.

Optionally, in the above-mentioned embodiment of the present invention, the occupancy determination module includes:

The second measurement sub-module is used to measure the RSSI of the received signal strength indication on the cell on the unlicensed frequency band, and obtain the channel occupancy information on the unlicensed frequency band, wherein the channel occupancy information includes: RSSI, channel occupancy rate and channel vacancy rate among at least one of.

Optionally, in the above-mentioned embodiment of the present invention, the occupancy determination module includes:

The first receiving sub-module is configured to receive channel occupancy information on an unlicensed frequency band sent by a network side device, where the channel occupancy information includes at least one of RSSI, channel occupancy rate and channel idle rate.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

The second receiving module is configured to receive the first threshold information for cell camping sent by the network side device, where the first threshold information includes at least one of the following information:

RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

The cell selection module includes:

The second selection submodule is configured to select a camping cell from the cells on the unlicensed frequency band according to the channel occupation information and the first threshold information.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

a third receiving module, configured to receive the load information of the cells on the unlicensed frequency band sent by the network side device;

The second selection submodule is further used for:

According to the channel occupancy information, the first threshold information and the load information, a camping cell is selected from the cells on the unlicensed frequency band.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

a fourth receiving sub-module, configured to receive configuration information of RSSI measurement sent by the network side device;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool;

The second measurement sub-module is further used for:

The measurement is performed according to the configuration information of the RSSI measurement, and the channel occupancy information on the unlicensed frequency band is acquired.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

receiving second threshold information for cell reselection sent by a network side device, where the second threshold information includes: a range value of signal power;

The method also includes:

The fifth receiving module is configured to perform cell reselection according to at least one of the second threshold information and the channel occupancy information on the unlicensed frequency band, and the cell measurement result on the unlicensed frequency band.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

It should be noted that the apparatus for selecting a camping cell in an unlicensed frequency band provided by the embodiment of the present invention is a device capable of executing the above-mentioned method for selecting a camping cell in an unlicensed frequency band, and the above-mentioned method for selecting a camping cell in an unlicensed frequency band All of the embodiments are applicable to the device, and can achieve the same or similar beneficial effects.

As shown in FIG. 5 , an embodiment of the present invention further provides a network-side device, including a processor 500 and a transceiver 510, where the processor 500 is configured to control the transceiver 510 to perform the following processes:

send channel occupancy information on the unlicensed band to the terminal; or,

Send first threshold information for cell camping to the terminal, where the first threshold information includes at least one of the following information:

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

Optionally, in the foregoing embodiment of the present invention, the transceiver 510 is further configured to:

The load information of the cells on the unlicensed frequency band is sent to the terminal.

Optionally, in the foregoing embodiment of the present invention, the transceiver 510 is further configured to:

Send the configuration information of RSSI measurement to the terminal;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool.

Optionally, in the foregoing embodiment of the present invention, the transceiver 510 is further configured to:

Send second threshold information to the terminal, where the second threshold information includes: a range value of signal power.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

It should be noted that the network-side device provided by the embodiments of the present invention is a network-side device capable of executing the above-mentioned method for selecting a camping cell in an unlicensed frequency band, and all the above-mentioned methods for selecting a camping cell in an unlicensed frequency band are It is applicable to the network side device, and both can achieve the same or similar beneficial effects.

As shown in FIG. 6 , an embodiment of the present invention further provides an apparatus for selecting a cell in an unlicensed frequency band, which is applied to network-side equipment, including:

The sending module 61 is used to send the channel occupation information on the unlicensed frequency band to the terminal; or, to send the first threshold information for cell camping to the terminal, the first threshold information includes at least one of the following information kind:

Received signal strength indicates RSSI threshold;

a channel occupancy threshold value and a first RSSI value for evaluating the channel occupancy;

A channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

The first sending module is configured to send the load information of the cells on the unlicensed frequency band to the terminal.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

a second sending module, configured to send configuration information of RSSI measurement to the terminal;

The configuration information of the RSSI measurement includes at least one of the following information:

Frequency domain resources and/or bandwidth for RRSI measurement;

Time domain resources for RSSI measurement;

Resource pool information measured by RSSI, the resource pool information includes at least one of: resource pool identification information, resource pool bandwidth, number of subchannels included in the resource pool, subchannel bandwidth included in the resource pool, and frequency domain location of the resource pool one;

Resource pool measurement configuration information measured by RSSI, where the resource pool measurement configuration information is used to indicate resources to be measured in the resource pool.

Optionally, in the above-mentioned embodiment of the present invention, the device further includes:

The third sending module is configured to send second threshold information to the terminal, where the second threshold information includes: a range value of signal power.

To sum up, in the above embodiments of the present invention, the terminal uses the channel occupancy information as a reference factor in the process of selecting a camping cell in an unlicensed frequency band, so that the terminal in the idle or deactivated state can choose a more suitable cell for camping, improving the The accuracy of the selection of the camping cell improves the efficiency of cell camping.

It should be noted that, the apparatus for selecting a cell in an unlicensed frequency band provided by the embodiment of the present invention is a device capable of performing the cell selection in the above-mentioned unlicensed frequency band, and all the above-mentioned embodiments of the method for selecting a cell in an unlicensed frequency band are applicable to the apparatus. And all can achieve the same or similar beneficial effects.

Embodiments of the present invention further provide a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements each process in the above-mentioned embodiments of the cell selection method for an unlicensed frequency band, and can achieve The same technical effect, in order to avoid repetition, will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

As will be appreciated by one skilled in the art, the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow and/or a block or blocks of the flowchart.

These computer program instructions may also be stored in a computer-readable storage medium capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce a paper product comprising the instruction means, The instruction means implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing the computer or other programmable device to perform a series of operational steps to produce a computer-implemented process, thereby causing the instructions to be executed on the computer or other programmable data processing device Steps are provided for implementing the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (25)

1. A method for selecting a resident cell in an unlicensed frequency band is applied to a terminal, and is characterized by comprising the following steps:

acquiring channel occupation information on an unauthorized frequency band;

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information.

2. The method of claim 1, wherein the obtaining of the channel occupancy information on the unlicensed frequency band comprises:

the method comprises the steps of measuring the Received Signal Strength Indication (RSSI) of a cell on an unauthorized frequency band, and acquiring channel occupation information on the unauthorized frequency band, wherein the channel occupation information comprises the following steps: at least one of RSSI, channel occupancy, and channel idleness.

3. The method of claim 1, wherein the obtaining of the channel occupancy information on the unlicensed frequency band comprises:

receiving channel occupation information on an unlicensed frequency band sent by a network side device, wherein the channel occupation information comprises: at least one of RSSI, channel occupancy, and channel idleness.

4. The method of claim 2, further comprising:

receiving first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

an RSSI threshold value;

a channel occupancy threshold value and a first RSSI value for estimating channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

selecting a resident cell from cells on an unlicensed frequency band according to the channel occupation information, including:

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information and the first threshold information.

5. The method of claim 4, further comprising:

receiving load information of a cell on an unauthorized frequency band, which is sent by network side equipment;

selecting a resident cell from cells on an unlicensed frequency band according to the channel occupation information and the first threshold information, including:

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information, the first threshold information and the load information.

6. The method of claim 2, further comprising:

receiving configuration information of RSSI measurement sent by network side equipment;

the configuration information of the RSSI measurement comprises at least one of the following information:

frequency domain resources and/or bandwidth of the RRSI measurements;

time domain resources for RSSI measurements;

resource pool information for RSSI measurements, the resource pool information comprising: at least one of resource pool identification information, a bandwidth of the resource pool, a number of sub-channels included in the resource pool, a bandwidth of sub-channels included in the resource pool, and a frequency domain position of the resource pool;

resource pool measurement configuration information of RSSI measurement, wherein the resource pool measurement configuration information is used for indicating resources to be measured in the resource pool;

the measuring the Received Signal Strength Indicator (RSSI) of the cell on the unauthorized frequency band to acquire the channel occupation information on the unauthorized frequency band comprises the following steps:

and measuring according to the configuration information of the RSSI measurement, and acquiring the channel occupation information on the unauthorized frequency band.

7. A method according to claim 1, 2 or 3, characterized in that the method further comprises:

receiving second threshold information sent by a network side device, wherein the second threshold information comprises: a range value of signal power;

the method further comprises the following steps:

and performing cell reselection according to at least one of the second threshold information and the channel occupation information on the unlicensed frequency band and the cell measurement result on the unlicensed frequency band.

8. A method for selecting a resident cell in an unlicensed frequency band is applied to network side equipment, and is characterized by comprising the following steps:

transmitting channel occupation information on an unauthorized frequency band to a terminal; or,

sending first threshold information for cell camping to a terminal, wherein the first threshold information comprises at least one of the following information:

a Received Signal Strength Indication (RSSI) threshold value;

a channel occupancy threshold value and a first RSSI value for estimating channel occupancy;

a channel idle rate threshold value and a second RSSI value used to estimate channel idle rate.

9. The method of claim 8, further comprising:

and sending the load information of the cell on the unlicensed frequency band to the terminal.

10. The method of claim 8, further comprising:

sending configuration information of RSSI measurement to a terminal;

the configuration information of the RSSI measurement comprises at least one of the following information:

frequency domain resources and/or bandwidth of the RRSI measurements;

time domain resources for RSSI measurements;

resource pool information for RSSI measurements, the resource pool information comprising: at least one of resource pool identification information, a bandwidth of the resource pool, a number of sub-channels included in the resource pool, a bandwidth of sub-channels included in the resource pool, and a frequency domain position of the resource pool;

and resource pool measurement configuration information of RSSI measurement, wherein the resource pool measurement configuration information is used for indicating the resource to be measured in the resource pool.

11. The method of claim 8, further comprising:

sending second threshold information to a terminal, wherein the second threshold information comprises: range values of signal power.

12. A terminal comprising a processor and a transceiver, wherein the processor is configured to perform the following:

acquiring channel occupation information on an unauthorized frequency band;

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information.

13. The terminal of claim 12, wherein the processor is further configured to:

the method comprises the steps of measuring the Received Signal Strength Indication (RSSI) of a cell on an unauthorized frequency band, and acquiring channel occupation information on the unauthorized frequency band, wherein the channel occupation information comprises the following steps: at least one of RSSI, channel occupancy, and channel idleness.

14. The terminal of claim 12, wherein the transceiver is configured to:

receiving channel occupation information on an unlicensed frequency band sent by a network side device, wherein the channel occupation information comprises: at least one of RSSI, channel occupancy, and channel idleness.

15. The terminal of claim 13, wherein the transceiver is further configured to:

receiving first threshold information for cell camping sent by a network side device, where the first threshold information includes at least one of the following information:

an RSSI threshold value;

a channel occupancy threshold value and a first RSSI value for estimating channel occupancy;

a channel idle rate threshold value and a second RSSI value for evaluating the channel idle rate;

the processor is further configured to:

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information and the first threshold information.

16. The terminal of claim 15, wherein the transceiver is further configured to:

receiving load information of a cell on an unauthorized frequency band, which is sent by network side equipment;

the processor is further configured to:

and selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information, the first threshold information and the load information.

17. The terminal of claim 13, wherein the transceiver is further configured to:

receiving configuration information of RSSI measurement sent by network side equipment;

the configuration information of the RSSI measurement comprises at least one of the following information:

frequency domain resources and/or bandwidth of the RRSI measurements;

time domain resources for RSSI measurements;

resource pool information for RSSI measurements, the resource pool information comprising: at least one of resource pool identification information, a bandwidth of the resource pool, a number of sub-channels included in the resource pool, a bandwidth of sub-channels included in the resource pool, and a frequency domain position of the resource pool;

resource pool measurement configuration information of RSSI measurement, wherein the resource pool measurement configuration information is used for indicating resources to be measured in the resource pool;

the processor is further configured to:

and measuring according to the configuration information of the RSSI measurement, and acquiring the channel occupation information on the unauthorized frequency band.

18. The terminal according to claim 12, 13 or 14, wherein the transceiver is further configured to:

receiving second threshold information for cell reselection, which is sent by a network side device, wherein the second threshold information includes: a range value of signal power;

the processor is further configured to:

and performing cell reselection according to at least one of the second threshold information and the channel occupation information on the unlicensed frequency band and the cell measurement result on the unlicensed frequency band.

19. An apparatus for selecting a cell to camp on in an unlicensed frequency band, applied to a terminal, comprising:

an occupation determining module, configured to obtain channel occupation information on an unlicensed frequency band;

and the cell selection module is used for selecting a resident cell from the cells on the unauthorized frequency band according to the channel occupation information.

20. A network side device, comprising a processor and a transceiver, wherein the processor is configured to control the transceiver to perform the following processes:

transmitting channel occupation information on an unauthorized frequency band to a terminal; or,

sending first threshold information for cell camping to a terminal, wherein the first threshold information comprises at least one of the following information:

a Received Signal Strength Indication (RSSI) threshold value;

a channel occupancy threshold value and a first RSSI value for estimating channel occupancy;

a channel idle rate threshold value and a second RSSI value used to estimate channel idle rate.

21. The network-side device of claim 20, wherein the transceiver is further configured to:

and sending the load information of the cell on the unlicensed frequency band to the terminal.

22. The network-side device of claim 20, wherein the transceiver is further configured to:

sending configuration information of RSSI measurement to a terminal;

the configuration information of the RSSI measurement comprises at least one of the following information:

frequency domain resources and/or bandwidth of the RRSI measurements;

time domain resources for RSSI measurements;

resource pool information for RSSI measurements, the resource pool information comprising: at least one of resource pool identification information, a bandwidth of the resource pool, a number of sub-channels included in the resource pool, a bandwidth of sub-channels included in the resource pool, and a frequency domain position of the resource pool;

and resource pool measurement configuration information of RSSI measurement, wherein the resource pool measurement configuration information is used for indicating the resource to be measured in the resource pool.

23. The network-side device of claim 20, wherein the transceiver is further configured to:

sending second threshold information to a terminal, wherein the second threshold information comprises: range values of signal power.

24. An apparatus for selecting a cell to camp on in an unlicensed frequency band, applied to a network side device, includes:

the transmitting module is used for transmitting channel occupation information on the unauthorized frequency band to the terminal; or, the apparatus is configured to send first threshold information for cell camping to a terminal, where the first threshold information includes at least one of the following information:

a Received Signal Strength Indication (RSSI) threshold value;

a channel occupancy threshold value and a first RSSI value for estimating channel occupancy;

a channel idle rate threshold value and a second RSSI value used to estimate channel idle rate.

25. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the method for selecting a cell to camp on in an unlicensed frequency band as claimed in any one of claims 1 to 7; alternatively, the program is executed by a processor to implement the steps in the method for selecting a camping cell in an unlicensed frequency band according to any one of claims 8 to 11.

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