WO2018177298A1

WO2018177298A1 - Load balancing method and device

Info

Publication number: WO2018177298A1
Application number: PCT/CN2018/080731
Authority: WO
Inventors: 孙立新; 丁颖哲; 周明宇; 路杨
Original assignee: 北京佰才邦技术有限公司
Priority date: 2017-03-27
Filing date: 2018-03-27
Publication date: 2018-10-04
Also published as: CN107071835A

Abstract

The present invention relates to the technical field of communications. Provided in an embodiment of the present invention are a load balancing method and device. The method comprises: a first base station acquiring a resource status request message transmitted by a second base station, the resource status request message comprising measurement configuration information used to instruct the first base station to measure a channel resource status; the first base station performing, according to the measurement configuration information, measurement on a channel resource status of a specified cell to obtain a measurement result of the channel resource status; the first base station including the measurement result of the channel resource status of the specified cell in a resource status update message, and transmitting the same to the second base station; and the second base station updating a stored channel resource status of the specified cell with the measurement result of the channel resource status. The embodiment of the present invention is applicable to a load balancing process performed on a base station, the base station using an unlicensed band to perform communication.

Description

Method and device for load balancing

The present application claims priority to Chinese Patent Application No. 201710189151.X, entitled "A Method and Apparatus for Load Balancing", filed on March 27, 2017, the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for load balancing.

Background technique

Multefire is an extension of LTE (Long Term Evolution) to unlicensed wireless access technologies. Multefire introduces the LBT (Listen before talk) mechanism of the carrier monitoring technology in the physical layer, and uses the mechanism of listening and speaking to realize the fair occupation of unlicensed band channels by other devices in the unlicensed band to avoid interference with other devices. , complete the implementation of Multefire technology.

Load balancing in a communication network system includes load reporting, load balancing based switching, and adjustment of mobility configuration parameters. In a conventional LTE system, a channel of a licensed band occupied by a device, and therefore, a radio resource that can be used by a cell is only related to the maximum available radio resource and the currently used radio resource. The Multefire system uses the channel of the unlicensed band. The channel of the unlicensed band is the shared channel. When the channel of the unlicensed band is occupied by other devices, the occupancy of the channel changes with time. Therefore, the wireless available in the Multefire system is actually available. Resources are changing dynamically. In the process of load balancing adjustment of the base station in the Multefire system by using the load balancing method in the prior art, the inventor uses the prior art to load balance the Multefire system, and since the real available wireless resources of the Multefire cell cannot be obtained, to the Multefire The system performs poor load balancing.

Application content

In view of this, the embodiment of the present application provides a method and an apparatus for load balancing, which can solve the problem that the load balancing effect of the base station for the unlicensed frequency band is poor in the prior art.

In a first aspect, the embodiment of the present application provides a method for load balancing, which is applicable to a first base station, where the method includes:

Obtaining, by the second base station, a resource status request message, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

And measuring, according to the measurement configuration information, a channel resource status of a specified cell to obtain a measurement result of a channel resource status;

The measurement result of the channel resource status of the designated cell is included in the resource status update message and sent to the second base station, so that the second base station updates the stored channel resource status of the designated cell.

The foregoing method and any possible implementation manner further provide an implementation manner, where the designated cell is a cell indicated in the measurement configuration information.

The method as described above, and any possible implementation manner, further provide an implementation manner, after the acquiring the resource status request message sent by the second base station, the method further includes:

Determining whether channel resource state measurement can be performed on the designated cell;

Sending a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

The method as described above, and any possible implementation manner, further provide an implementation manner, the sending, by the second base station, a resource status response message, where the resource status response message includes indicating whether the designated cell channel can be The indication information of the resource status measurement includes:

If the channel resource status measurement cannot be performed on the designated cell, sending a resource status response message to the second base station, where the resource status response message includes a channel resource status measurement failure identifier of the cell and a channel resource status measurement failure reason .

The method as described above, and any possible implementation manner, further provide an implementation manner, after the transmitting, by using the measurement result of the channel resource status of the specified cell, in the resource status update message, to the second base station, the method includes:

Receiving a load balancing destination switching request message or a mobility configuration parameter adjustment request message sent by the second base station.

The foregoing method and any possible implementation manner further provide an implementation manner, where the measurement configuration information includes a channel resource status identifier and a channel resource status update period, where the channel resource status identifier is used to indicate the The first base station measures a channel resource status, where the channel resource status update period is used to indicate a period used by the first base station to send a resource status update message including a measurement result of a channel resource status.

The foregoing method and any possible implementation manner further provide an implementation manner, where the acquiring the resource status request message sent by the second base station includes:

Obtaining a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message;

And acquiring a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.

The foregoing method and any possible implementation manner further provide an implementation manner, where the channel resource status includes all available resources of the channel obtained by channel occupancy detection, and/or channel resources obtained by channel occupancy detection. The remaining available resources of the unoccupied channel.

The method as described above and any possible implementation manner further provide an implementation manner, where the remaining available resources of the channel include the number of remaining resources of the channel relative to the channel maximum resource, and/or occupied with respect to the through channel The number of available resources remaining on the channel of all available resources of the obtained channel is detected.

The method as described above, and any possible implementation manner, further provide an implementation manner, where the measuring result of the channel resource status of the specified cell is included in the resource status update message, and the sending to the second base station includes:

And transmitting, to the second base station, a measurement result of all available resources of the channel, in a new information unit of the resource status update message; and/or,

A measurement result of remaining available resources of the unoccupied channel in the channel resource is included in an existing information unit of the resource status update message and sent to the second base station.

And transmitting, to the second base station, a measurement result of the remaining available resources of the unoccupied channel in the resource, in a new information unit of the resource status update message; and/or

The measurement result of the remaining available resources of the unoccupied channel in the channel resource is included in the existing information unit of the resource status update message and sent to the second base station.

The foregoing method and any possible implementation manner further provide an implementation manner, where the measuring result of the channel resource status of the specified cell to obtain the channel resource status includes:

Detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold;

According to the detected length of time, the measurement result of the channel resource state is obtained.

The foregoing method and any possible implementation manner further provide an implementation manner, in the preset channel resource state calculation period, the time length of detecting that the total channel power is lower than the channel occupancy detection threshold includes:

During the idle time of the preset channel resource state calculation period, the length of time that the total channel power is lower than the channel occupancy detection threshold is detected.

The foregoing method and any possible implementation manner further provide an implementation manner, where the obtaining, according to the detected time length, the measurement result of the channel resource state includes:

Determining a data transmission time of the designated cell in the preset channel resource state calculation period;

The measurement result of the channel resource state is obtained according to the data transmission time and the length of time that the total channel power in the designated cell is lower than the channel occupancy detection threshold in the preset channel resource state calculation period.

The foregoing method and any possible implementation manner further provide an implementation manner, where the obtaining the measurement result of the channel resource state according to the detected time length further includes:

Acquiring, respectively, an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period;

The time length of the total cell power in the idle time in the preset channel resource state calculation period is lower than the channel occupation detection threshold in a predetermined proportion to the uplink channel and the downlink channel;

And obtaining, according to the allocation result, the uplink data transmission time and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.

The foregoing method and any possible implementation manner further provide an implementation manner, where the measurement result of the channel resource state measurement for the specified cell to obtain the channel resource state includes:

When the channel access detection is performed several times in the specified cell in the preset channel available resource calculation period, the sum of the lengths of the transmission opportunities when the channel access detection is successful after each listening is obtained;

Obtaining a measurement result of a channel resource state according to the sum of the acquired transmission opportunity time lengths.

The foregoing method and any possible implementation manner further provide an implementation manner, where the channel resource status includes a channel occupied resource obtained by channel occupancy detection.

Detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is higher than a channel occupancy detection threshold;

In a second aspect, the embodiment of the present application provides a method for load balancing, which is applicable to a second base station, where the method includes:

Sending a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station measures the channel of the designated cell according to the measurement configuration information. Resource status

Acquiring, by the first base station, a resource status update message, where the resource status update message includes a measurement result of a channel resource status of the designated cell;

Updating the stored channel resource status of the designated cell according to the measurement result of the channel resource status.

The method as described above and any possible implementation manner further provide an implementation manner, after sending the resource status request message to the target base station, the following:

Obtaining, by the first base station, a resource status response message, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

The foregoing method and any possible implementation manner further provide an implementation manner, after updating the stored channel resource status of the designated cell according to the measurement result of the channel resource status, the method includes:

Transmitting a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station according to the updated channel resource status of the designated cell; or

The handover target cell of the terminal is selected according to the updated channel resource status of the designated cell.

In a third aspect, an embodiment of the present application provides a device for load balancing, which is applicable to a first base station, where the device includes:

a first acquiring unit, configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

a measuring unit, configured to measure a channel resource status of the specified cell according to the measurement configuration information, to obtain a measurement result of the channel resource status;

a first sending unit, configured to include, in a resource status update message, a measurement result of a channel resource status of the specified cell, to send to the second base station, so that the second base station updates the stored channel resource status of the specified cell .

The method as described above and any possible implementation manner further provide an implementation manner, and the device further includes:

a determining unit, configured to determine whether channel resource state measurement can be performed on the designated cell;

And a second sending unit, configured to send a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

The method as described above and any possible implementation manner further provide an implementation manner, where the second sending unit includes:

a sending module, configured to send a resource status response message to the second base station if the channel resource status measurement cannot be performed on the specified cell, where the resource status response message includes a channel resource status measurement failure identifier and a channel resource of the cell The reason why the status measurement failed.

The method as described above and any possible implementation manner further provide an implementation manner, where the device includes:

And a second acquiring unit, configured to receive, by the second base station, a handover request message or a mobility configuration parameter adjustment request message for load balancing.

The foregoing method and any possible implementation manner further provide an implementation manner, where the configuration information includes a channel resource status identifier and a channel resource status update period, where the channel resource status identifier is used to indicate the A base station measures a channel resource status, and the channel resource status update period is used to indicate a period used by the first base station to send a resource status update message including a measurement result of a channel resource status.

The method as described above and any possible implementation manner further provide an implementation manner, where the first obtaining unit includes:

a first acquiring module, configured to acquire a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message;

And a second acquiring module, configured to acquire a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.

The method as described above and any possible implementation manner further provide an implementation manner, where the first sending unit includes:

a first sending module, configured to send, to the second base station, a measurement result that all available resources of the channel are included in a new information unit of the resource status update message; and/or

And a second sending module, configured to include, in the existing information unit of the resource status update message, a measurement result of the remaining available resources of the channel resource in the channel resource, to be sent to the second base station.

a third sending unit, configured to include, in a newly added information unit of the resource status update message, a measurement result of an unoccupied channel remaining available resource in the channel resource, to the second base station; and/or ,

And a fourth sending unit, configured to include, in the existing information unit of the resource status update message, a measurement result of the remaining available resources of the channel resource in the channel resource, to be sent to the second base station.

The method as described above and any possible implementation manner further provide an implementation manner, where the measurement unit includes:

a detecting module, configured to detect, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold;

The first acquiring module is configured to obtain a measurement result of a channel resource state according to the detected length of time.

The method as described above and any possible implementation manner further provide an implementation manner, where the detection module includes:

The detecting submodule is configured to detect, in an idle time of a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold.

The method as described above and any possible implementation manner further provide an implementation manner, where the first obtaining module includes:

a determining submodule, configured to determine a data transmission time of the specified cell in the preset channel resource state calculation period;

The obtaining submodule is configured to obtain a measurement result of the channel resource state according to the data transmission time and a length of time in which the total channel power in the specified cell is lower than the channel occupancy detection threshold in the preset channel resource state calculation period.

The method as described above and any possible implementation manner further provide an implementation manner, where the first obtaining module further includes:

The determining submodule is further configured to separately acquire an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period;

And an allocation submodule, configured to allocate the time length of the total channel power to the channel occupancy detection threshold in the idle time of the preset channel resource state calculation period to be allocated to the uplink channel and the downlink channel according to a preset ratio. ;

The acquiring submodule is further configured to obtain, according to the allocation result, the uplink data transmission time, and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.

The method as described above and any possible implementation manner further provide an implementation manner, where the measuring unit further includes:

a second acquiring module, configured to perform, when the channel access detection is performed after the first listening and the channel access detection in the specified cell in the preset channel available resource calculation period, The sum of the length of opportunity;

And a third obtaining module, configured to obtain, according to the sum of the acquired transmission opportunity time lengths, a measurement result of a channel resource state.

The method as described above and any possible implementation manner further provide an implementation manner, where the detection module is further configured to:

In a fourth aspect, the embodiment of the present application provides a device for load balancing, which is applicable to a second base station, where the device includes:

a first sending unit, configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station is configured according to the measurement Information, measuring channel resource status of a specified cell;

a first acquiring unit, configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell;

And an updating unit, configured to update, according to the measurement result of the channel resource state, a stored channel resource state of the designated cell.

And a second acquiring unit, configured to acquire a resource status response message sent by the first base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

a second sending unit, configured to send a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station according to the updated channel resource status of the designated cell; or, according to the updated channel resource of the designated cell The state selects the handover target cell of the terminal.

In a fifth aspect, an embodiment of the present application provides a device for load balancing, which is applicable to a first base station, where the device includes a processor, a memory, and an input/output interface; the processor, the memory, and the input/output interface communicate through a bus. The memory is configured with computer code, the processor being capable of calling the code to control an input and output interface;

The processor is configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

The processor is configured to measure, according to the measurement configuration information, a channel resource status of a specified cell to obtain a measurement result of a channel resource status;

And the processor, configured to include, in a resource status update message, a measurement result of a channel resource status of the specified cell, to send to the second base station, to enable the second base station to update the stored channel resource status of the specified cell.

In a sixth aspect, the embodiment of the present application provides a device for load balancing, which is applicable to a second base station, where the device includes a processor, a memory, and an input/output interface; the processor, the memory, and the input/output interface are performed through a bus. Communication; the memory is configured with computer code, the processor being capable of calling the code to control an input and output interface;

The processor is configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station is configured according to the measurement Information, measuring channel resource status of a specified cell;

The processor is configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell;

The processor is configured to update a stored channel resource state of the designated cell according to the measurement result of the channel resource status.

The method and apparatus for load balancing provided by the embodiment of the present application, when performing load balancing on a first base station that uses unlicensed band communication, acquires a resource status request message carrying configuration information indicating a measurement channel resource status, and then the first base station Performing detection on the channel resource status of the designated cell, and transmitting the detected result to the second base station, so that the second base station performs load balancing switching and/or mobility configuration parameter adjustment for the base station using the unlicensed band communication, And the second base station may be configured to select a target cell that is switched by the terminal according to a channel resource state of the base station of the unlicensed band. Compared with the prior art, when load balancing is performed for the first base station that uses the unlicensed band communication, the measurement process of the channel resource state is increased, thereby considering the channel of the cell in the communication system of the unlicensed band when implementing load balancing. The resource status is affected by the cell channel occupancy and the listening mechanism, and the second base station can perform load balancing on the first base station according to the channel resource status, thereby effectively performing load balancing. In addition, the second base station may select a cell with a higher channel access rate as the handover target cell of the terminal according to the channel resource state, thereby reducing the handover time and improving the handover efficiency.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. One of ordinary skill in the art can also obtain other drawings based on these drawings without paying for inventive labor.

FIG. 1 is a flowchart of a method for load balancing according to an embodiment of the present application;

2 is a schematic diagram of a resource provided by an embodiment of the present application;

3 is a flowchart of another method for load balancing provided by an embodiment of the present application;

4 is a flowchart of another method for load balancing provided by an embodiment of the present application;

FIG. 5 is a flowchart of another method for load balancing according to an embodiment of the present disclosure;

6 is a structural diagram of a device for load balancing according to an embodiment of the present application;

FIG. 7 is a structural diagram of another apparatus for load balancing according to an embodiment of the present disclosure;

FIG. 8 is a structural diagram of another apparatus for load balancing according to an embodiment of the present disclosure;

9 is a structural diagram of a device for load balancing according to an embodiment of the present application;

FIG. 10 is a structural diagram of another apparatus for load balancing according to an embodiment of the present disclosure;

FIG. 11 is a structural diagram of another apparatus for load balancing according to an embodiment of the present disclosure;

FIG. 12 is a structural diagram of a device for load balancing according to an embodiment of the present disclosure;

FIG. 13 is a structural diagram of a device for load balancing according to an embodiment of the present application.

detailed description

For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the application. The singular forms "a", "the", and "the"

It should be understood that although the terms first and second may be used to describe a base station in the embodiments of the present application, these base stations should not be limited to these terms. These terms are only used to distinguish base stations from each other. For example, the first base station may also be referred to as a second base station without departing from the scope of the embodiments of the present application. Similarly, the second base station may also be referred to as a first base station.

Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting." Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" can be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".

In the LTE system, a radio access technology using a licensed frequency band is used. For a device that uses LTE to communicate, the currently available radio resources of the device are only related to the maximum radio resource and the radio resources used by the cell currently served by the device, but for the application. For a communication device in an unlicensed band, the radio resource of the unlicensed band is a shared radio resource. When the load-balanced initiating device performs load switching to the target device that applies the unlicensed band, if the channel occupancy rate of the target device is high, the target device It is necessary to continuously monitor the channel and wait until the LBT (Listen Before Talk) is successful before sending a response to the initiating device for load balancing, and using the existing load balancing method based on the licensed band communication system to perform the unlicensed band communication device. Load balancing, due to the inability to obtain real available wireless resource information, will result in poor load balancing.

To solve the problem that the load balancing effect of the communication device in the unlicensed frequency band is poor, the embodiment of the present application provides a method for load balancing, which is applicable to the first base station that uses unlicensed frequency band communication, and the flowchart of the method is as shown in FIG. 1 . The method includes:

The first base station that uses the unlicensed band communication is used as the target base station for load balancing.

The first base station acquires a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status.

The second base station is used as an initiating base station for performing load balancing, and the base station may be a base station that performs communication by using an unlicensed frequency band (for example, multefire), or may be a base station that uses the licensed frequency band to communicate.

The measurement configuration information includes a channel resource status identifier and a channel resource status update period. The channel resource status identifier is used to indicate that the first base station measures a channel resource status, and the channel resource status update period is used to instruct the first base station to send a resource status update message that includes a measurement result of a channel resource status. The period of use.

It is additionally noted that the measurement configuration information is further used to indicate an identifier of a resource state type such as a measurement radio resource usage state, a hardware load state, a transmission network layer load state, a cell hybrid available capacity state, and a detection period of the states.

102. The first base station measures, according to the measurement configuration information, a channel resource status of the designated cell, to obtain a measurement result of the channel resource status.

The measurement configuration information may indicate a cell identifier of the first base station to measure a channel resource status, where the designated cell may be a cell indicated in the measurement configuration information. Specifically, the first base station extracts, from the measurement configuration information, an identifier indicating a measurement channel resource status and a measured cell identifier, where the first base station responds to the resource status request information, and indicates, according to the indication of the measurement channel resource status indication identifier, the measurement configuration information. One or more cells perform measurement of channel resource status.

The channel resource status includes all available resources of the channel obtained by channel occupancy detection, and/or remaining available resources of the unoccupied channel in the channel resource obtained by channel occupancy detection.

The remaining available resources of the remaining available resource channels of the unoccupied channel include the number of remaining resources of the channel relative to the channel maximum resource, and/or the remaining available resources of the channel with respect to all the available resources of the channel obtained by the channel occupancy detection. number.

Obviously, for those skilled in the art, the channel state resource may also be other channel state measurement results based on channel occupancy detection, for example, may be a resource occupied by a channel occupied by channel occupancy detection, where the channel is occupied by resources and channels. The available resources make up all the resources of the channel.

In order to facilitate the person skilled in the art, a clear understanding of all available resources of the channel obtained by channel occupancy detection, unreserved channel remaining available resources and channel maximum resources in the channel resources obtained by channel occupancy detection, based on these three relationships A schematic diagram as shown in Figure 2 is provided.

The first base station measures the channel resource status of the designated cell according to the identifier of the channel resource status identifier by identifying the channel resource status identifier in the measurement configuration information.

Specifically, if the specified channel resource status identifier is 1, it indicates that the measured channel resource status is indicated. When the first base station extracts the channel resource status identifier from the measurement configuration information sent by the second base station, when the first base station identifies that the identifier is 1, the channel resource status of the designated cell is measured; when the first base station identifies the identifier If it is not 1, the channel resource status of the specified cell is not measured.

It should be noted that the foregoing specific description of the channel resource status identifier is only an implementable manner provided by the present application, and is not specifically limited to the present application.

103. The first base station sends the measurement result of the channel resource status to the second base station in a resource status update message.

104. The second base station updates the stored channel resource status of the designated cell according to the measurement result of the channel resource status.

The second base station deletes the original information from the specified location that stores the channel resource status of the designated cell, and then stores the obtained channel resource status to the specified location, and updates the stored channel resource status of the designated cell, thereby enabling the second base station to enable the second base station to Obtaining the channel resource status of the designated cell, and using the updated channel resource status of the designated cell, performing load balancing switching and mobility configuration parameter adjustment for the designated cell. In addition, the channel resource status of the updated designated cell may also serve as a basis for selecting a target cell for handover.

The load balancing method provided by the embodiment of the present application, when performing load balancing on the first base station that uses the unlicensed band communication, acquires a resource status request message carrying configuration information indicating a measurement channel resource status, and then the first base station pairs are designated. The cell performs channel resource status detection, and sends the detected result to the second base station, so that the second base station performs load balancing switching and/or mobility configuration parameter adjustment for the base station using the unlicensed band communication. Compared with the prior art, when load balancing is performed for the first base station that uses the unlicensed band communication, the measurement process of the channel resource state is increased, thereby considering the channel of the cell in the communication system of the unlicensed band when implementing load balancing. The resource status is affected by the cell channel occupancy and the listening mechanism, and the second base station can perform load balancing on the first base station according to the channel resource status, thereby effectively performing load balancing. In addition, the second base station may select a cell with a higher channel access rate as the handover target cell of the terminal according to the channel resource state, thereby reducing the handover time and improving the handover efficiency.

Further, in combination with the foregoing process, in order to enable the second base station to learn the channel resource status of the specified cell in the first base station, and improve the efficiency of the load balancing, the embodiment of the present application provides another implementation manner. As shown in FIG. 3, after the first base station acquires the resource status request message sent by the second base station, the method further includes:

105. The first base station determines whether channel resource state measurement can be performed on the designated cell.

106. The first base station sends a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

The resource status response message is a response message that the first base station responds to the second base station sending the resource status request information. The resource status response message may be a response message that the first base station successfully responds to the resource status request message sent by the second base station, or may be a response message that the first base station does not successfully respond to the resource status request message sent by the second base station. The response message that the first base station fails to respond to the resource status request message sent by the second base station includes: a response message sent by the first base station when the one or more measurement objects indicated in the resource status request message cannot be successfully measured, and It is a response message sent when all measurement objects indicated in the resource status request message cannot be successfully measured.

When the first base station determines that the channel resource status measurement can be performed on the designated cell, the resource status response message includes a channel resource measurement success identifier for the designated cell.

In addition, when it is determined that the first base station cannot perform channel resource state measurement on the designated cell, the first base station determines that the information resource state measurement cannot be performed, and sends a resource status response message to the second base station, where the channel resource of the cell is included. The reason for the failure of the status measurement failure identification and channel resource status measurement.

The second base station performs a corresponding operation by indicating indication information indicating whether the channel resource status of the specified cell can be measured. For example, when the indication information indicates that the first base station is capable of measuring the channel resource status of the designated cell, the second base station waits to receive the measurement result of the measurement of the specified cell channel resource state by the first base station; if the indication information indicates that the first base station cannot The cell channel resource status is specified for measurement, and the second base station performs other operations. For example, the second base station selects not to perform load balancing on the first base station.

Specifically, the format of the resource status response message may be a format as described in Table 1, and the eighth bit of the resource status measurement failure indication information Measurement Failed Report Characteristics IE is used as a channel resource status measurement failure identifier, when the bit is 1 The indication indicates that the first base station fails to perform channel resource state measurement on the cell indicated in the Cell ID, and the Cause IE indicates the reason why the channel resource state measurement fails.

Table 1

Specifically, the format of the resource status response message may also be the format as described in Table 2, and the eighth bit of the resource status measurement failure indication information Measurement Failed Report Characteristics IE is used as the channel resource status measurement failure identifier, when the bit is 1 The time indicates that the first base station fails to perform channel resource state measurement on the cell indicated in the Cell ID, and the Cause IE indicates the reason why the channel resource state measurement fails.

Table 2

It should be noted that the format of the resource status response message shown in Table 1 and Table 2 is only two specific implementation manners in the embodiments of the present application, and is not limited to the present application.

Further, in combination with the foregoing process, the embodiment of the present application provides another implementation manner. As shown in FIG. 4, in step 104, the second base station updates the stored channel resource status of the designated cell according to the measurement result of the channel resource status. After that:

107. The second base station sends a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station according to the updated channel resource status of the designated cell, or selects according to the updated channel resource state of the designated cell. The handover target cell of the terminal.

Further, in combination with the foregoing process, in order to enable the second base station to know the usage of the channel resource of the first base station, the first base station obtains the execution of the resource status request message sent by the second base station in step 101, and the embodiment of the present application provides another The implementation manner is as shown in FIG. 5, and the step 101 specifically includes:

1011. The first base station acquires a channel resource status identifier from the first newly added sub-information unit or the first existing sub-information unit in the resource status request message.

The second base station adds a new identifier for indicating the measurement of the channel resource status by the first base station or the existing resource status request information according to the communication protocol according to the communication protocol with the first base station. The designated identifier is used to instruct the first base station to perform channel resource state measurement.

Specifically, for example, the first base station and the second base station protocol use the idle bit in the Report Characteristics information element in the resource status request information, for example, the bit value carried by the 8th bit (or the 32nd bit) as a channel resource. The status measurement identifier, when 1 , indicates that the first base station performs channel resource status measurement on the designated cell.

Or, specifically, for example, the identifier of the second base station and the first base station protocol channel resource state identifier and the identifier indicating the remaining capacity capacity value of the measurement cell share an identifier, that is, originally used to indicate the measurement capacity remaining capacity Capacity value identifier, and is used to indicate The remaining capacity of the cell and the state of the channel resource are measured. When the second base station acquires the cell remaining capacity identifier, it starts to measure the channel resource status. It should be noted that the above two examples are only two specific implementation manners provided by the embodiments of the present application, and are not intended to limit the present application. Any implementation within the principles of the present application belongs to an implementation manner of the present application. .

1012. The first base station acquires a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.

It should be noted that the channel resource status update period may measure that the update period of other resources indicated in the configuration information is the same, or may be different from the update period of other resources.

When the update period of the other resources is the same, the first base station and the second base station protocol use the update period of the other resources in the resource status request information to carry the channel resource status update period, for example, using the Reporting Periodicity bearer channel in the resource request information. The resource status update period, that is, sharing an update period with other resources.

When the update period is different from other resources, the first base station and the second base station protocol add an information unit in the resource status request information to carry the channel resource status update period.

In order to facilitate the understanding by those skilled in the art, in combination with the implementation principles of the above steps 1011 and 1012, for the load balancing method of the embodiment of the present application, a resource status request information format is provided as shown in Table 3:

table 3

It should be noted that the format of the foregoing resource status request message is only a specific implementation manner provided by the present application, and is not limited to the present application. Any implementation within the principles of the present application is an implementation manner of the present application.

Further, in combination with the foregoing process, the method for transmitting the measurement result of the channel resource state to the second base station in the resource status update message is performed in the following steps.

method one,

1031. The measurement result of all available resources of the channel is included in a new information unit of the resource status update message and sent to the second base station.

The first base station, according to the communication protocol with the second base station, adds a new information unit in the resource status update message to carry the measurement result considering all available resources of the LBT channel. All the available resources of the channel in the designated cell that are considered to be heard first include the channel resources used by the designated cell, which can reflect the channel access capability of the designated cell, and the second base station specifies all available resources of the channel that are considered to be heard first. The channel access capability of the designated cell can be obtained, and the larger the available resources, the higher the channel access capability.

It should be noted that the channel resource status may be further divided into an uplink channel resource state and a downlink channel state. Therefore, the measurement result carried in the newly added information unit of the resource status update message may simultaneously indicate the available resource status of the uplink channel and the downlink channel. It is also possible to indicate the available resources of the uplink channel and the available resources of the downlink channel, respectively.

When used to simultaneously indicate available resources of the uplink channel and the downlink channel, the new information element of the resource status update message adds an information element to carry the measurement result, for example, as shown in Table 2, the composite in the resource status update message A new Channel Available Value information element is added to the Available Capacity Group information unit to indicate the channel available resources of the cell; when the available resources of the uplink channel and the downlink channel are respectively indicated, the new information of the resource status update message is added. The unit adds two information units to respectively carry the measurement result of the available resources of the uplink channel and the measurement result of the available resources of the downlink channel, for example, the downlink composite available in the Composite Available Capacity Group information element in the resource status update message Channel Available Value is added to the Composite Available Capacity Downlink and the Uplink Composite Available Capacity Uplink information element, respectively indicating the available resources of the downlink channel and the available resources of the uplink channel, Compo The format of the site available Capacity Downlink and Composite Available Capacity Uplink information elements is shown in Table 4.

Table 4

table 5

It should be noted that Tables 4 and 5 are only the format of the information unit provided for the specific example above, and are not intended to limit the application.

Method 2,

1032. The measurement result of the remaining available resources of the unoccupied channel in the channel resource is included in an existing information unit of the resource status update message and sent to the second base station.

The available resources in the designated cell that are considered to be unlisted in the channel resources are not included in the channel resources used by the designated cell, and may reflect the load status of the designated cell, and the second base station specifies the cell to be considered after listening. The remaining resources of the unoccupied channel in the channel resources can obtain the load condition of the designated cell, and the larger the remaining available resources, the lower the load. The remaining available resources of the channel include the number of remaining resources of the channel relative to the channel maximum resource, and/or the number of remaining channels of the channel relative to all available resources of the channel obtained by the channel occupancy detection.

Specifically, in the prior art, there is an information unit for indicating remaining available resources, and the embodiment proposes multiplexing the information unit to implement measurement results of remaining available resources of an unoccupied channel in a channel resource that is considered to be heard first. Hosting. For example, as shown in Table 6, the Capacity Available Capacity Downlink and the Capacity Available Capacity Uplink information element in the Composite Available Capacity Group information element in the Reuse Resource Status Update message indicate the available resources of the downlink channel and the available resources of the uplink channel, respectively. .

Table 6

It should be noted that the foregoing is only a specific implementation manner of the embodiments of the present application, and is not specifically limited to the present application.

Method 3,

1033. The measurement result of the remaining available resources of the unoccupied channel in the channel resource is included in a new information unit of the resource status update message and sent to the second base station.

The remaining available resources of the channel include the number of remaining resources of the channel relative to the channel maximum resource, and/or the number of remaining channels of the channel relative to all available resources of the channel obtained by the channel occupancy detection.

The specific implementation process is similar to the implementation process of the first method, and is not described here.

It should be noted that the foregoing three methods may also be combined in any combination, that is, the combination of the first mode and the second mode sends the measurement result of the available resources to the second base station, and the combination of the mode 1 and the mode 3 sends the measurement result of the available resources to the second base station. Or, in combination of the second mode and the third mode, the measurement result of the available resources is sent to the second base station. When the measurement result of the available resources is sent to the second base station by using the combination of the mode 2 and the mode 3, preferably, the mode 2 and the mode 3 send different remaining resources of the channel, for example, the mode 2 sends the maximum to the second base station relative to the channel. The number of remaining resources available for the channel of the resource, and the manner of using the third to transmit the remaining available resources of the channel with respect to all available resources of the channel obtained by the channel occupancy detection. By combining any two methods, the second base station can simultaneously obtain the channel access capability and the load status of the designated cell.

Further, in combination with the foregoing process, the channel resource state measurement is performed on the designated cell to obtain the measurement result of the channel resource state, and the embodiment of the present application provides three implementation manners.

method one,

1021A: In a preset channel resource state calculation period, detecting a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold.

The channel occupancy detection threshold is also the first detection threshold. When the threshold is lower than the threshold, the device determines that the channel is not occupied, and can send a signal. When the threshold is higher than the threshold, the device determines that the channel is occupied and cannot send a signal.

The channel resource state calculation period is used to calculate a resource state of the channel, and the information resource state calculation period may be a preset value in the first base station, and may also use a resource state update period in the measurement configuration information.

The Received Signal Strength Indication (RSSI) indicates the total channel power value during a specific channel transmission.

In order to obtain a more accurate measurement result of the finally obtained resource state, it is preferable to detect the length of time that the total channel power is lower than the channel occupancy detection threshold in the idle time of the preset channel resource state calculation period. The idle time refers to the time when there is neither uplink transmission nor downlink transmission in the channel.

1022A. Obtain a measurement result of a channel resource state according to the detected length of time.

The first base station first determines a ratio of a time length of the detected channel total power lower than the LBT detection threshold to a channel resource calculation period, and then calculates a product of the ratio and the number of resources of the maximum unlicensed frequency band of the first base station, and calculates Channel available resources.

For the convenience of those skilled in the art, specific examples are given. For example, the preset channel resource calculation period is 1000 ms, and the time length of measuring the total channel power lower than the LBT detection threshold in the idle time of the preset channel resource calculation period is 800 ms, and the ratio of the two is calculated as 0.8, if the cell The maximum number of resources is 100, and the number of available resources on the channel is calculated to be 80 (100*0.8).

Further, the specific implementation of step 1022A in the first mode includes:

10221A. Determine a data transmission time of the designated cell in the preset channel resource state calculation period.

10222A: Obtain a measurement result of a channel resource state according to the data transmission time and a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold in a preset channel resource state calculation period.

The measurement result of the channel resource state obtained by the above steps 10221A and 10222A can be divided into two types. The first type is to determine the uplink data transmission time and the downlink data transmission time of the designated cell in the preset channel resource state calculation period. And, the measurement result of the channel resource state is obtained according to the total data transmission time.

The following is a detailed example of this process:

The channel resource calculation period is 1000 ms, the total data transmission time in 1000 ms is 100 ms, and the idle time is 900 ms. The time length of the first base station measuring the total channel power lower than the LBT detection threshold in the idle time is 800 ms, and the total data is calculated. The sum of the transmission time and the total length of the channel is less than the detection threshold is 900 ms, and the ratio of the sum of the two channels to the channel resource calculation period is 0.9. If the total number of resources of the cell is 100, the calculated number of available channels of the channel is 90. (100*0.9).

The second type calculates the uplink channel resource status and the downlink Cinda resource status separately.

In step 1, the uplink data transmission time and the downlink data transmission time of the specified cell in the preset channel resource state calculation period are respectively obtained.

Step 2: The time length of the total cell power in the idle time of the preset channel resource state calculation period is lower than the channel occupation detection threshold in the preset channel resource state calculation period, and is allocated to the uplink channel and the downlink channel according to a preset ratio.

Step 3: Obtain a measurement result of an uplink channel resource state and a downlink channel resource state according to the allocation result, the uplink data transmission time, and the downlink data transmission time.

The following is a detailed example of this process:

It is assumed that the channel available resource calculation period is 1000 ms, wherein the service time of obtaining the downlink channel is 75 ms, and the service time of acquiring the uplink channel is 25 ms; then, it is assumed that the first base station measures the total channel power in the idle time is lower than the LBT detection threshold. The length of time is 800ms. The first base station allocates the 800ms to the downlink channel for 600ms according to a preset ratio, allocates it to the uplink channel for 200ms, and allocates the channel available resource calculation period to the downlink channel for 750ms and allocates to the uplink channel for 250ms; therefore, According to the allocation result, the sum of the time allocated to the downlink when the downlink service transmission time and the total channel power are lower than the detection threshold is 675 ms, and the sum of the time allocated to the downlink when the uplink service transmission time and the total channel power are lower than the detection threshold is 225 ms. If the total number of downlink theoretical resources of the cell is 100, the number of available resources of the downlink channel is calculated to be 675/750*100=90, and the number of available resources of the downlink channel is calculated to be 225/250*100=90.

Method 2,

1021B. When performing channel access detection in the specified cell in the preset channel available resource calculation period, obtain the sum of the lengths of the transmission opportunities when the channel access detection is successful after each listening. .

1022B. Obtain a measurement result of a channel resource status according to the sum of the obtained transmission opportunity time lengths.

According to the way provided by the second method, combined with specific examples:

Specifically, the channel available resource calculation period is 1000 ms, and the first base station successfully performs 10 times of LBT channel access detection within 1000 ms, and each time the available TXOP (transmission opportunity) time is 10 ms, the sum of the TXOP times is The ratio of the channel available resource calculation period is 0.1. If the total theoretical resource of the cell is 100, the number of available channels of the channel is calculated to be 10 (100*0.1).

Method 3,

1021C: During a preset channel resource state calculation period, detecting a length of time that the total channel power in the designated cell is higher than a channel occupancy detection threshold.

1022C: Obtain a measurement result of a channel resource status according to the detected length of time.

In order to obtain a more accurate measurement result of the finally obtained resource state, it is preferable to detect the length of time that the total channel power is higher than the channel occupancy detection threshold in the idle time of the preset channel resource state calculation period.

It is to be noted that the three methods for measuring the channel resource status provided by the foregoing are only calculated based on the LBT mechanism on the base station side, and the calculation of the uplink channel resource status may be jointly calculated based on the LBT mechanism on the base station side and the LBT mechanism on the terminal side. Obtaining, but the channel access detection situation of the LBT based on the terminal side cannot be directly obtained by the base station, and the channel access detection condition of the terminal side is obtained by estimating the received uplink data or by reporting the terminal measurement. The measurement method jointly calculated based on the LBT mechanism on the base station side and the LBT mechanism on the terminal side will not be specifically described.

Based on the foregoing method, the embodiment of the present application provides a device for load balancing, which is applicable to a first base station. The structure of the device is as shown in FIG. 6. The device includes:

a first acquiring unit 21, configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

The measuring unit 22 is configured to measure a channel resource status of the specified cell according to the measurement configuration information to obtain a measurement result of the channel resource status.

a first sending unit 23, configured to include, in a resource status update message, a measurement result of a channel resource status of the specified cell, to send to the second base station, so that the second base station updates the stored channel resource of the designated cell status.

Optionally, the designated cell is a cell indicated in the measurement configuration information.

Optionally, as shown in FIG. 7, the device further includes:

The determining unit 24 is configured to determine whether channel resource state measurement can be performed on the designated cell.

The second sending unit 25 is configured to send a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

Optionally, the second sending unit 25 includes:

The sending module 251 is configured to: if the channel resource status measurement is not performed on the cell indicated in the measurement configuration information, send a resource status response message to the second base station, where the resource status response message includes a channel resource status of the cell Reasons for measurement failure identification and channel resource status measurement failure

Optionally, as shown in FIG. 8, the apparatus includes:

The second obtaining unit 26 is configured to receive, by the second base station, a handover request message or a mobility configuration parameter adjustment request message for load balancing.

Optionally, the configuration information includes a channel resource status identifier and a channel resource status update period, where the channel resource status identifier is used to indicate that the first base station sends a measurement including a channel resource status. The period of time that the resulting resource status update message is used.

Optionally, the first obtaining unit 21 includes:

The first obtaining module 211 is configured to obtain a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message.

The second obtaining module 212 is configured to obtain a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.

Optionally, the channel resource status includes all available resources of the channel obtained by channel occupancy detection, and/or remaining available resources of the unoccupied channel in the channel resource obtained by channel occupancy detection.

Optionally, when the remaining resources of the channel include the number of remaining resources of the channel relative to the maximum resource of the channel, and/or the number of remaining resources of the channel of all available resources of the channel obtained by the channel occupancy detection.

Optionally, the first sending unit 23 includes:

The first sending module 231 is configured to send the measurement result of all available resources of the channel to the second base station in a new information unit of the resource status update message; and/or,

The second sending module 232 is configured to send, in the existing information unit of the resource status update message, the measurement result of the remaining available resources of the channel resource to the second base station.

Optionally, the first sending unit 23 includes:

The third sending unit 234 is configured to send, to the second base station, a measurement result of remaining resources available for the unoccupied channel in the channel resource, in a new information unit of the resource status update message; and or,

The fourth sending unit 235 is configured to send, in the existing information unit of the resource status update message, the measurement result of the remaining available resources of the channel resource to the second base station.

Optionally, the measuring unit 22 includes:

The detecting module 221 is configured to detect, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than the channel occupancy detection threshold.

The first obtaining module 222 is configured to obtain a measurement result of a channel resource status according to the checked time length.

Optionally, the detecting module 221 includes:

The detecting sub-module 2211 is configured to detect, in an idle time of a preset channel resource state calculation period, a length of time that the total channel power in the specified cell is lower than the channel occupancy detection threshold.

Optionally, the first obtaining module 222 includes:

The determining submodule 2221 is configured to determine a data transmission time of the designated cell in the preset channel resource state calculation period.

The obtaining sub-module 2222 is configured to obtain a measurement result of the channel resource state according to the data transmission time and a length of time in which the total channel power in the specified cell is lower than the channel occupancy detection threshold in the preset channel resource state calculation period.

Optionally, the first obtaining module 222 further includes:

The determining sub-module 2223 is further configured to separately acquire an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period.

The allocation sub-module 2224 is configured to allocate the time length of the total channel power to the uplink channel and the downlink according to a preset ratio in the idle time of the preset channel resource state calculation period. channel.

The obtaining sub-module 2222 is further configured to obtain, according to the allocation result, the uplink data transmission time, and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.

Optionally, the measuring unit 22 further includes:

The second obtaining module 223 is configured to: when the channel access detection is performed after the first listening and the channel access detection in the specified cell in the preset channel available resource calculation period, The sum of the lengths of transmission opportunities.

The third obtaining module 224 is configured to obtain a measurement result of the channel resource status according to the sum of the acquired transmission opportunity time lengths.

Optionally, the channel resource status includes a resource occupied by a channel obtained by channel occupancy detection.

Optionally, the detecting module 221 is further configured to:

And detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is higher than a channel occupancy detection threshold.

The first obtaining module 222 is configured to obtain a measurement result of a channel resource state according to the detected length of time.

The apparatus for load balancing provided by the embodiment of the present application, when performing load balancing on the first base station that uses the unlicensed band communication, acquires a resource status request message carrying configuration information indicating a measurement channel resource status, and then the first base station pairs are designated. The cell performs channel resource status detection, and sends the detected result to the second base station, so that the second base station performs load balancing switching and/or mobility configuration parameter adjustment for the base station using the unlicensed band communication, and And causing the second base station to select a target cell that is switched by the terminal according to a channel resource state of the base station of the unlicensed band. Compared with the prior art, when load balancing is performed for the first base station that uses the unlicensed band communication, the measurement process of the channel resource state is increased, thereby considering the channel of the cell in the communication system of the unlicensed band when implementing load balancing. The resource status is affected by the cell channel occupancy and the listening mechanism, and the second base station can perform load balancing on the first base station according to the channel resource status, thereby effectively performing load balancing. In addition, the second base station may select a cell with a higher channel access rate as the handover target cell of the terminal according to the channel resource state, thereby reducing the handover time and improving the handover efficiency.

The embodiment of the present application provides a device for load balancing, which is applicable to a second base station, and the device as shown in FIG. 9 includes:

The first sending unit 31 is configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station performs the measurement according to the first base station. Configuration information, measuring the channel resource status of the specified cell.

The first obtaining unit 32 is configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell.

The updating unit 33 is configured to update the stored channel resource status of the designated cell according to the measurement result of the channel resource status.

Optionally, as shown in FIG. 10, the device further includes:

The second obtaining unit 34 is configured to acquire a resource status response message sent by the first base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.

Optionally, as shown in FIG. 11, the apparatus further includes:

The second sending unit 35 is configured to send, according to the updated channel resource status of the first base station, a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station; or, according to the updated designated cell The channel resource status selects the handover target cell of the terminal.

The apparatus for load balancing provided by the embodiment of the present application, when performing load balancing on the first base station that uses the unlicensed band communication, acquires a resource status request message carrying measurement configuration information indicating a measurement channel resource status, and then the first base station pair The designated cell performs channel resource status detection, and transmits the detected result to the second base station, so that the second base station performs load balancing switching and/or mobility configuration parameter adjustment for the base station that uses the unlicensed band communication. Compared with the prior art, the technical method provided by the present application increases the measurement process of the channel resource state when performing load balancing on the first base station that uses the unlicensed band communication, thereby considering the unlicensed frequency band when implementing load balancing. The channel resource status of the cell in the communication system is affected by the cell channel occupancy condition and the first listening mechanism, and the second base station can load balance the first base station according to the channel resource status, thereby effectively reducing the switching time and improving the handover. effectiveness.

The embodiment of the present application provides a device for load balancing, which is applicable to a first base station. As shown in FIG. 12, the device includes a processor 41, a memory 42 and an input/output interface 43. The processor 41 and the memory 42 and The input/output interface 43 communicates via a bus; the memory is configured with computer code, and the processor 41 can call the code to control the input and output interface;

The processor 41 is configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

The processor 41 is configured to measure, according to the measurement configuration information, a channel resource status of a specified cell to obtain a measurement result of a channel resource status;

The processor 41 is configured to send the measurement result of the channel resource status of the specified cell to the second base station in a resource status update message, so that the second base station updates the stored channel resource of the designated cell. status.

Optionally, the processor 41 is further configured to: determine whether a channel resource status measurement can be performed on the designated cell; and send a resource status response message to the second base station, where the resource status response message includes an indication Whether or not the indication information of the specified cell channel resource status can be measured.

Optionally, the processor 41 is further configured to: if the channel resource status measurement is not performed on the cell indicated in the measurement configuration information, send a resource status response message to the second base station, where the resource status response message includes The channel resource state measurement failure identifier of the cell and the reason for the failure of the channel resource state measurement.

Optionally, the processor 41 is further configured to receive a load balancing request handover request message or a mobility configuration parameter adjustment request message sent by the second base station.

Optionally, the measurement configuration information includes a channel resource status identifier and a channel resource status update period, where the channel resource status identifier is used to indicate that the first base station measures channel resource status, and the channel resource status update period And a period used by the first base station to send a resource status update message that includes a measurement result of a channel resource status.

Optionally, the processor 41 is further configured to: obtain a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message; and, from the resource status The second new sub-information unit or the second existing sub-information unit in the request message acquires a channel resource status update period.

Optionally, the channel resource status includes all available resources of the channel obtained by channel occupancy detection, and/or remaining available resources of the unoccupied channel in the channel resource obtained by channel occupancy detection, and/or through the channel The resources occupied by the detected channel are occupied.

Optionally, the remaining available resources of the channel include the number of remaining resources of the channel relative to the maximum resource of the channel, and/or the number of available resources of the channel relative to all available resources of the channel obtained by the channel occupancy detection.

Optionally, the processor 41 is further configured to send, to the second base station, a measurement result that all available resources of the channel are included in a new information unit of the resource status update message; and/or, And transmitting, to the second base station, a measurement result of the remaining available resources of the unoccupied channel in the channel resource, in an existing information unit of the resource status update message.

Optionally, the processor 41 is further configured to send, to the new information unit of the resource status update message, a measurement result of an unoccupied channel remaining available resource in the channel resource, to send the And the second base station; and/or, the measurement result of the remaining available resources of the unoccupied channel in the channel resource is included in an existing information unit of the resource status update message and sent to the second base station.

Optionally, the processor 41 is further configured to detect, in a preset channel resource state calculation period, a length of time that the total channel power in the specified cell is lower than a channel occupancy detection threshold; and, according to the detected The length of time to obtain the measurement result of the channel resource status.

Optionally, the processor 41 is further configured to detect, in an idle time of a preset channel resource state calculation period, a length of time that the total channel power is lower than the channel occupancy detection threshold.

Optionally, the processor 41 is further configured to determine a data transmission time of the specified cell in the preset channel resource state calculation period; and, according to the data transmission time and in a preset The time length of the total channel power in the specified cell in the channel resource state calculation period is lower than the channel occupancy detection threshold, and the measurement result of the channel resource state is obtained.

Optionally, the processor 41 is further configured to separately acquire an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period.

The processor 41 is further configured to allocate, according to a predetermined proportion, a time interval that the total cell power is lower than a channel occupancy detection threshold in the idle time in the preset channel resource state calculation period, to the uplink channel, and Downstream channel.

The processor 41 is further configured to obtain, according to the allocation result, the uplink data transmission time, and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.

Optionally, the processor 41 is further configured to perform channel access detection after each listening first, when performing channel access detection in a predetermined cell in a preset channel available resource calculation period. And a sum of time lengths of transmission opportunities when successful; and, for obtaining a measurement result of a channel resource state according to a sum of lengths of the acquired transmission opportunities.

The embodiment of the present application provides a device for load balancing, which is applicable to a second base station. As shown in FIG. 13, the device includes a processor 51, a memory 52, and an input/output interface 53. The processor 51 and the memory 52 are provided. And the input/output interface 53 communicates via a bus; the memory 52 is configured with computer code, and the processor 51 can call the code to control the input and output interface;

The processor 51 is configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station performs the measurement according to the first base station. Configuration information, measuring channel resource status of the specified cell;

The processor 51 is configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell.

The processor 51 is configured to update the stored channel resource status of the designated cell according to the measurement result of the channel resource status.

Optionally, the processor 51 is further configured to: after sending the resource status request message to the target base station, the following:

Optionally, the processor 51 is further configured to send, according to the updated channel resource status of the designated cell, a handover request or a mobility configuration parameter adjustment request for the purpose of load balancing to the first base station; or The channel resource state of the updated designated cell selects the handover target cell of the terminal.

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

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

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims

A method for load balancing, which is applicable to a first base station, and the method includes:

Obtaining, by the second base station, a resource status request message, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

And measuring, according to the measurement configuration information, a channel resource status of a specified cell to obtain a measurement result of a channel resource status;

The measurement result of the channel resource status of the designated cell is included in the resource status update message and sent to the second base station, so that the second base station updates the stored channel resource status of the designated cell.
The method according to claim 1, wherein the designated cell is a cell indicated in the measurement configuration information.
The method according to claim 2, wherein after the acquiring the resource status request message sent by the second base station, the method further comprises:

Determining whether channel resource state measurement can be performed on the designated cell;

Sending a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.
The method according to claim 3, wherein the sending a resource status response message to the second base station, the resource status response message includes indicating whether a cell channel resource status indicated in the measurement configuration information can be indicated The measurement instructions include:

If the channel resource status measurement cannot be performed on the cell indicated in the measurement configuration information, send a resource status response message to the second base station, where the resource status response message includes a channel resource status measurement failure identifier and a channel resource of the cell. The reason why the status measurement failed.
The method according to claim 1, wherein after the measuring result of the channel resource status of the designated cell is included in the resource status update message and sent to the second base station, the method includes:

Receiving a load balancing destination switching request message or a mobility configuration parameter adjustment request message sent by the second base station.
The method according to claim 1, wherein the measurement configuration information comprises a channel resource status identifier and a channel resource status update period, wherein the channel resource status identifier is used to indicate that the first base station measures channel resource status And the channel resource status update period is used to indicate a period used by the first base station to send a resource status update message that includes a measurement result of a channel resource status.
The method according to claim 6, wherein the acquiring the resource status request message sent by the second base station comprises:

Obtaining a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message;

And acquiring a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.
The method according to claim 1, wherein the channel resource status comprises all available resources of the channel obtained by channel occupancy detection, and/or the remaining channels remaining in the channel resources obtained by channel occupancy detection are available. Resources.
The method according to claim 8, wherein the remaining available resources of the channel comprise the number of remaining resources of the channel relative to the maximum resource of the channel, and/or all available resources of the channel obtained by detecting the occupied by the channel The number of remaining resources available for the channel.
The method according to claim 8 or 9, wherein the transmitting the measurement result of the channel resource status of the specified cell to the second base station in the resource status update message comprises:

And transmitting, to the second base station, a measurement result of all available resources of the channel, in a new information unit of the resource status update message; and/or,

And transmitting, to the second base station, a measurement result of the remaining available resources of the unoccupied channel in the channel resource, in an existing information unit of the resource status update message.
The method according to claim 8 or 9, wherein the transmitting the measurement result of the channel resource status of the designated cell to the second base station in the resource status update message comprises:

And transmitting, to the second base station, a measurement result of the remaining available resources of the unoccupied channel in the channel resource, in a new information unit of the resource status update message; and/or

And transmitting, to the second base station, a measurement result of the remaining available resources of the unoccupied channel in the channel resource, in an existing information unit of the resource status update message.
The method according to claim 1, wherein the measuring the channel resource status of the designated cell to obtain the channel resource status comprises:

Detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold;

According to the detected length of time, the measurement result of the channel resource state is obtained.
The method according to claim 12, wherein, in the preset channel resource state calculation period, the length of time for detecting that the total channel power is lower than the channel occupancy detection threshold includes:

During the idle time of the preset channel resource state calculation period, the length of time that the total channel power is lower than the channel occupancy detection threshold is detected.
The method according to claim 12, wherein the obtaining the measurement result of the channel resource status according to the detected length of time comprises:

Determining a data transmission time of the designated cell in the preset channel resource state calculation period;

The measurement result of the channel resource state is obtained according to the data transmission time and the length of time that the total channel power in the designated cell is lower than the channel occupancy detection threshold in the preset channel resource state calculation period.
The method according to claim 14, wherein the obtaining the measurement result of the channel resource status according to the detected length of time further comprises:

Acquiring, respectively, an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period;

The time length of the total cell power in the idle time in the preset channel resource state calculation period is lower than the channel occupation detection threshold in a predetermined proportion to the uplink channel and the downlink channel;

And obtaining, according to the allocation result, the uplink data transmission time and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.
The method according to claim 1, wherein the measuring the channel resource status of the cell indicated in the measurement configuration information to obtain the channel resource status comprises:

When the channel access detection is performed several times in the specified cell in the preset channel available resource calculation period, the sum of the lengths of the transmission opportunities when the channel access detection is successful after each listening is obtained;

Obtaining a measurement result of a channel resource state according to the sum of the acquired transmission opportunity time lengths.
The method according to claim 1, wherein the channel resource status comprises channel occupied resources obtained by channel occupancy detection.
The method according to claim 1, wherein the measuring the channel resource status of the designated cell to obtain the channel resource status comprises:

Detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is higher than a channel occupancy detection threshold;

According to the detected length of time, the measurement result of the channel resource state is obtained.
A load balancing method is characterized in that it is applicable to a second base station, and the method includes:

Sending a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station measures the channel of the designated cell according to the measurement configuration information. Resource status

Acquiring, by the first base station, a resource status update message, where the resource status update message includes a measurement result of a channel resource status of the designated cell;

Updating the stored channel resource status of the designated cell according to the measurement result of the channel resource status.
The method according to claim 19, wherein the designated cell is a cell indicated in the measurement configuration information.
The method according to claim 19, wherein after transmitting the resource status request message to the target base station, the method comprises:

Obtaining, by the first base station, a resource status response message, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.
The method according to claim 19, wherein the updating the stored channel resource status of the designated cell according to the measurement result of the channel resource status comprises:

Transmitting a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station according to the updated channel resource status of the designated cell; or

The handover target cell of the terminal is selected according to the updated channel resource status of the designated cell.
A load balancing device is characterized in that it is applicable to a first base station, and the device includes:

a first acquiring unit, configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

a measuring unit, configured to measure a channel resource status of the specified cell according to the measurement configuration information, to obtain a measurement result of the channel resource status;

a first sending unit, configured to include, in a resource status update message, a measurement result of a channel resource status of the specified cell, to send to the second base station, so that the second base station updates the stored channel resource status of the specified cell .
The apparatus according to claim 23, wherein said designated cell is a cell indicated in said measurement configuration information.
The device according to claim 24, wherein the device further comprises:

a determining unit, configured to determine whether channel resource state measurement can be performed on the designated cell;

And a second sending unit, configured to send a resource status response message to the second base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.
The apparatus according to claim 25, wherein the second transmitting unit comprises:

a sending module, configured to send a resource status response message to the second base station if the channel resource status measurement cannot be performed on the cell indicated by the measurement configuration information, where the resource status response message includes a channel resource status measurement of the cell The reason why the failure ID and channel resource status measurement failed.
The device of claim 23 wherein said device comprises:

And a second acquiring unit, configured to receive, by the second base station, a handover request message or a mobility configuration parameter adjustment request message for load balancing.
The device according to claim 23, wherein the configuration information comprises a channel resource status identifier and a channel resource status update period, wherein the channel resource status identifier is used to indicate that the first base station measures channel resource status, The channel resource status update period is used to indicate a period used by the first base station to send a resource status update message including a measurement result of a channel resource status.
The device according to claim 23, wherein the first obtaining unit comprises:

a first acquiring module, configured to acquire a channel resource status identifier from the first new sub-information unit or the first existing sub-information unit in the resource status request message;

And a second acquiring module, configured to acquire a channel resource status update period from the second newly added sub information unit or the second existing sub information unit in the resource status request message.
The apparatus according to claim 23, wherein the channel resource status comprises all available resources of the channel obtained by channel occupancy detection, and/or the remaining channels of the channel resources obtained by channel occupancy detection are available. Resources.
The apparatus according to claim 30, wherein said channel remaining available resources comprises a number of remaining channels of resources relative to a channel maximum resource, and/or all available resources of said channel obtained by said channel occupancy occupancy detection The number of remaining resources available for the channel.
The apparatus according to claim 30 or 31, wherein the first transmitting unit comprises:

a first sending module, configured to send, to the second base station, a measurement result that all available resources of the channel are included in a new information unit of the resource status update message; and/or

And a second sending module, configured to include, in the existing information unit of the resource status update message, a measurement result of the remaining available resources of the channel resource in the channel resource, to be sent to the second base station.
The apparatus according to claim 30 or 31, wherein the first transmitting unit comprises:

a third sending unit, configured to include, in a newly added information unit of the resource status update message, a measurement result of an unoccupied channel remaining available resource in the channel resource, to the second base station; and/or ,

And a fourth sending unit, configured to include, in the existing information unit of the resource status update message, a measurement result of the remaining available resources of the channel resource in the channel resource, to be sent to the second base station.
The apparatus according to claim 23, wherein said measuring unit comprises:

a detecting module, configured to detect, in a preset channel resource state calculation period, a length of time that a total channel power in the specified cell is lower than a channel occupancy detection threshold;

The first acquiring module is configured to obtain a measurement result of a channel resource state according to the detected length of time.
The device according to claim 34, wherein the detecting module comprises:

The detecting submodule is configured to detect, in an idle time of a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is lower than a channel occupancy detection threshold.
The device according to claim 34, wherein the first obtaining module comprises:

a determining submodule, configured to determine a data transmission time of the specified cell in the preset channel resource state calculation period;

The obtaining submodule is configured to obtain a measurement result of the channel resource state according to the data transmission time and a length of time in which the total channel power in the specified cell is lower than the channel occupancy detection threshold in the preset channel resource state calculation period.
The device according to claim 36, wherein the first obtaining module further comprises:

The determining submodule is further configured to separately acquire an uplink data transmission time and a downlink data transmission time of the specified cell in the preset channel resource state calculation period;

And an allocation submodule, configured to allocate the time length of the total channel power to the channel occupancy detection threshold in the idle time of the preset channel resource state calculation period to be allocated to the uplink channel and the downlink channel according to a preset ratio. ;

The acquiring submodule is further configured to obtain, according to the allocation result, the uplink data transmission time, and the downlink data transmission time, a measurement result of an uplink channel resource state and a downlink channel resource state.
The device according to claim 23, wherein the measuring unit further comprises:

a second acquiring module, configured to perform, when the channel access detection is performed after the first listening and the channel access detection in the specified cell in the preset channel available resource calculation period, The sum of the length of opportunity;

And a third obtaining module, configured to obtain, according to the sum of the acquired transmission opportunity time lengths, a measurement result of a channel resource state.
The apparatus according to claim 23, wherein the channel resource status comprises a channel occupied resource obtained by channel occupancy detection.
The device according to claim 23, wherein the detecting module is further configured to:

Detecting, in a preset channel resource state calculation period, a length of time that the total channel power in the designated cell is higher than a channel occupancy detection threshold;

The first acquiring module is configured to obtain a measurement result of a channel resource state according to the detected length of time.
A load balancing device is characterized in that it is applicable to a second base station, and the device includes:

a first sending unit, configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station is configured according to the measurement Information, measuring channel resource status of a specified cell;

a first acquiring unit, configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell;

And an updating unit, configured to update, according to the measurement result of the channel resource state, a stored channel resource state of the designated cell.
The apparatus according to claim 41, wherein said designated cell is a cell indicated in said measurement configuration information.
The device of claim 41, wherein the device further comprises:

And a second acquiring unit, configured to acquire a resource status response message sent by the first base station, where the resource status response message includes indication information indicating whether the channel resource status of the specified cell can be measured.
The device according to claim 41, wherein the device further comprises:

a second sending unit, configured to send a handover request or a mobility configuration parameter adjustment request for load balancing to the first base station according to the updated channel resource status of the designated cell; or, according to the updated channel resource of the designated cell The state selects the handover target cell of the terminal.
A device for load balancing, characterized in that it is applicable to a first base station, the device includes a processor, a memory, and an input/output interface; the processor, the memory, and the input/output interface communicate through a bus; Configuring a computer code, the processor being able to call the code to control an input and output interface;

The processor is configured to acquire a resource status request message sent by the second base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status;

The processor is configured to measure, according to the measurement configuration information, a channel resource status of a specified cell to obtain a measurement result of a channel resource status;

And the processor, configured to include, in a resource status update message, a measurement result of a channel resource status of the specified cell, to send to the second base station, to enable the second base station to update the stored channel resource status of the specified cell.
A device for load balancing, characterized in that it is applicable to a second base station, the device comprising a processor, a memory, and an input/output interface; the processor, the memory, and the input/output interface communicate through a bus; Configured with computer code, the processor can invoke the code to control the input and output interfaces;

The processor is configured to send a resource status request message to the first base station, where the resource status request message includes measurement configuration information indicating that the first base station measures channel resource status, so that the first base station is configured according to the measurement Information, measuring channel resource status of a specified cell;

The processor is configured to acquire a resource status update message sent by the first base station, where the resource status update message includes a measurement result of a channel resource status of the specified cell;

The processor is configured to update a stored channel resource state of the designated cell according to the measurement result of the channel resource status.