CN107071835A

CN107071835A - A kind of method and device of load balancing

Info

Publication number: CN107071835A
Application number: CN201710189151.XA
Authority: CN
Inventors: 孙立新; 丁颖哲; 周明宇; 路杨
Original assignee: Baicells Technologies Co Ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2017-03-27
Filing date: 2017-03-27
Publication date: 2017-08-18
Also published as: WO2018177298A1

Abstract

The embodiments of the invention provide a kind of method and device of load balancing, it is related to communication technical field.On the one hand, methods described includes：First base station is obtained in the resource status request message that the second base station is sent, the resource status request message comprising the measurement configuration information for indicating the first base station measurement channel resource state；Then, first base station is according to measurement configuration information, and the channel resource state of cell is specified in measurement, to obtain the measurement result of channel resource state；Secondly, the measurement result of the channel resource state of specified cell is included in resource status new information and is sent to second base station by first base station；So as to measurement result of second base station according to the channel resource state, the channel resource state of the specified cell of storage is updated.The embodiment of the present invention is applied to during carrying out load balancing to the base station using unauthorized band communication.

Description

Load balancing method and device

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

Multefire is a technology that extends LTE (Long Term Evolution) to unlicensed radio access. The Multefer introduces an LBT (Listen before talk) mechanism of a carrier monitoring technology in a physical layer, and realizes that other devices in an unlicensed frequency band fairly occupy an unlicensed frequency band channel by using the Listen before talk mechanism, so that interference between the Multefer and other devices is avoided, and the implementation of the Multefer technology is completed.

Load balancing in a communication network system comprises: load reporting, handover based on load balancing, and adjustment of mobility configuration parameters. In the conventional LTE system, the device occupies a channel in a licensed frequency band, and therefore, the radio resources available to the cell are only related to the maximum available radio resources and currently used radio resources. The Multefire system uses an unlicensed frequency band channel, the unlicensed frequency band channel is a shared channel, and when the unlicensed frequency band channel may be occupied by other devices, the occupancy rate of the channel changes over time, so that the radio resources actually available by the Multefire system change dynamically. In the process of carrying out load balancing adjustment on a base station in a Multefer system by using a load balancing method in the prior art, an inventor carries out load balancing on the Multefer system by using the prior art, and the effect of carrying out load balancing on the Multefer system is poor because real available wireless resources of a Multefer cell cannot be obtained.

[ summary of the invention ]

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

In a first aspect, an embodiment of the present invention provides a load balancing method, which is applied to a first base station, and the method includes:

acquiring a resource state request message sent by a second base station, wherein the resource state request message comprises measurement configuration information indicating the resource state of a measurement channel of the first base station;

measuring the channel resource state of the designated cell according to the measurement configuration information to obtain the measurement result of the channel resource state;

and the measurement result of the channel resource state of the designated cell is contained in a resource state updating message and is sent to the second base station, so that the second base station updates the stored channel resource state of the designated cell.

The method and any one of the possible implementations as described above further provide an implementation that the designated cell is a cell indicated in the measurement configuration information.

The method and any one of the possible implementations further provide an implementation, where after the obtaining the resource status request message sent by the second base station, the method further includes:

determining whether channel resource status measurements can be made for the designated cell;

and sending a resource state response message to the second base station, wherein the resource state response message comprises indication information indicating whether the channel resource state of the specified cell can be measured.

The method and any one of the possible implementations further provide an implementation that the sending a resource status response message to the second base station, where the resource status response message includes indication information indicating whether channel resource status measurement for the designated cell is possible includes:

and if the channel resource state measurement cannot be carried out on the specified cell, sending a resource state response message to the second base station, wherein the resource state response message comprises a channel resource state measurement failure identifier of the cell and a reason for the channel resource state measurement failure.

The method and any one of the possible implementations further provide an implementation that, after the sending the measurement result of the channel resource status of the designated cell to the second base station in a resource status update message, includes:

and receiving a handover request message or a mobility configuration parameter adjustment request message which is sent by the second base station and aims at load balancing.

The method and any one of the possible implementations as described above further provide an implementation, where the measurement configuration information includes a channel resource state identifier and a channel resource state update period; the channel resource status identifier is used to indicate the first base station to measure the 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 containing the measurement result of the channel resource status.

The method and any one of the possible implementations further provide an implementation, where the obtaining a resource status request message sent by a second base station includes:

acquiring a channel resource state identifier from a first new sub information unit or a first existing sub information unit in the resource state request message;

and acquiring a channel resource state updating period from a second newly-added sub-information unit or a second existing sub-information unit in the resource state request message.

The method and any possible implementation described above further provide an implementation in which the channel resource status includes all available resources of the channel when considering the listen-before-talk mechanism and/or remaining available resources of the unoccupied channel of the channel resources when considering the listen-before-talk mechanism.

The method and any possible implementation manners as described above further provide an implementation manner that the channel remaining available resource includes a channel remaining available resource number relative to a channel maximum resource and/or a channel remaining available resource number relative to all available resources of the channel when the listen-before-talk mechanism is considered.

The method and any one of the possible implementations further provide an implementation that the including, in a resource status update message, the measurement result of the channel resource status of the designated cell to the second base station includes:

the measurement result of all available resources of the channel considering listening before speaking is contained in a newly added information unit of the resource state updating message and is sent to the second base station; and/or the presence of a gas in the gas,

and the measurement result of the unoccupied channel residual available resource in the channel resource considering listen before talk is contained in the existing information unit of the resource state updating message and is sent to the second base station.

the measurement result of the unoccupied channel residual available resource in the channel resource considering listening before speaking is contained in a newly added information unit of the resource state updating message and is sent to the second base station; and/or the presence of a gas in the gas,

The method and any one of the possible implementations further provide an implementation that the measuring the channel resource status of the designated cell to obtain the measurement result of the channel resource status includes:

detecting the time length of the channel power in the designated cell being lower than the detection threshold of listening before speaking in a preset channel resource state calculation period;

and obtaining the measurement result of the channel resource state according to the detected time length.

The method and any one of the possible implementations described above further provide an implementation that, in the preset channel resource state calculation period, detecting that the channel power is below the listen-before-talk detection threshold for a length of time includes:

and detecting the time length of the channel power lower than the listen-before-talk detection threshold in the idle time of the preset channel resource state calculation period.

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

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

and obtaining a measurement result of the channel resource state according to the data transmission time and the time length of the channel power lower than the detection threshold of listening before speaking in the appointed cell in the preset channel resource state calculation period.

The method and any one of the possible implementations as described above further provide an implementation, where the obtaining a measurement result of a channel resource status according to the detected time length further includes:

respectively acquiring uplink data transmission time and downlink data transmission time of the designated cell in the preset channel resource state calculation period;

allocating the time length of the designated cell, in which the channel power is lower than the listen-before-talk detection threshold in the idle time in the preset channel resource state calculation period, to an uplink channel and a downlink channel according to a preset proportion;

and obtaining the measurement results of the uplink channel resource state and the downlink channel resource state according to the distribution result, the uplink data transmission time and the downlink data transmission time.

The method and any one of the possible implementations further provide an implementation, where the performing channel resource status measurement on the designated cell to obtain a measurement result of the channel resource status includes:

when a plurality of times of listen before talk channel access detection is carried out in a specified cell within a preset channel available resource calculation period, acquiring the sum of the time lengths of transmission opportunities when the listen before talk channel access detection is successful each time;

and obtaining a measurement result of the channel resource state according to the sum of the obtained transmission opportunity time lengths.

In a second aspect, an embodiment of the present invention provides a load balancing method, which is applied to a second base station, and the method includes:

sending a resource state request message to a first base station, wherein the resource state request message comprises measurement configuration information indicating that the first base station measures the channel resource state, so that the first base station measures the channel resource state of a specified cell according to the measurement configuration information;

acquiring a resource state updating message sent by a first base station, wherein the resource state updating message comprises a measurement result of a channel resource state of a specified cell;

and updating the stored channel resource state of the designated cell according to the measurement result of the channel resource state.

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

and acquiring a resource state response message sent by the first base station, wherein the resource state response message comprises indication information indicating whether the channel resource state of the specified cell can be measured or not.

The method and any one of the possible implementations as described above further provide an implementation, where after the updating the stored channel resource status of the designated cell according to the measurement result of the channel resource status, the method includes:

sending a switching request or a mobile configuration parameter adjusting request aiming at load balancing to the first base station according to the updated channel resource state of the designated cell; or,

and selecting a switching target cell of the terminal according to the updated channel resource state of the designated cell.

In a third aspect, an embodiment of the present invention provides a load balancing apparatus, which is applied to a first base station, where the apparatus includes:

a first obtaining unit, configured to obtain a resource status request message sent by a second base station, where the resource status request message includes measurement configuration information indicating a channel resource status measured by the first base station;

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

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

The method and any one of the possible implementations as described above further provide an implementation, where the designated cell is a cell indicated in the measurement configuration information.

The method and any possible implementation described above further provide an implementation, and the apparatus further includes:

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

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 designated cell can be measured.

The method and any possible implementation manner described above further provide an implementation manner, and 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 designated cell, where the resource status response message includes a channel resource status measurement failure identifier of the cell and a reason for the channel resource status measurement failure.

The method and any possible implementation described above further provide an implementation, the apparatus comprising:

and the second acquisition unit is used for receiving a handover request message or a mobility configuration parameter adjustment request message which is sent by the second base station and aims at load balancing.

The method and any one of the possible implementations as described above further provide an implementation, where the configuration information includes a channel resource state identifier and a channel resource state update period; the channel resource status identifier is used to indicate the first base station to measure the 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 containing the measurement result of the channel resource status.

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

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

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

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

a first sending module, configured to send the measurement result of all available resources of the channel considering listen before talk to the second base station, where the measurement result is included in a new information unit of the resource status update message; and/or the presence of a gas in the gas,

a second sending module, configured to send the measurement result of the unoccupied channel remaining available resource in the channel resources considered to be listened to before talk to the second base station, including the measurement result in the existing information unit of the resource status update message.

a third sending unit, configured to send the measurement result of the unoccupied channel remaining available resource in the channel resources considered to be listened to before talk to the second base station, where the measurement result is included in a new information adding unit of the resource status update message; and/or the presence of a gas in the gas,

a fourth sending unit, configured to send the measurement result of the unoccupied channel remaining available resource in the channel resources considered to be listened to before talk to the second base station, including the measurement result in the existing information unit of the resource status update message.

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

a detection module, configured to detect, in a preset channel resource state calculation period, a time length during which a channel power in the designated cell is lower than a listen-before-talk detection threshold;

and the first acquisition module is used for acquiring the measurement result of the channel resource state according to the detected time length.

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

and the detection submodule is used for detecting the time length of the channel power in the specified cell being lower than the detection threshold of listening before speaking in the idle time of the preset channel resource state calculation period.

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

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

and the acquisition submodule is used for acquiring a measurement result of the channel resource state according to the data transmission time and the time length of the channel power lower than the listen-before-talk detection threshold in the designated cell in a preset channel resource state calculation period.

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

the determining submodule is further configured to obtain uplink data transmission time and downlink data transmission time of the designated cell in the preset channel resource state calculation cycle respectively;

the allocation submodule is used for allocating the time length of the designated cell, in which the channel power is lower than the listen-before-talk detection threshold in the idle time in the preset channel resource state calculation period, to an uplink channel and a downlink channel according to a preset proportion;

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

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

a second obtaining module, configured to obtain, when performing a plurality of times of listen before talk channel access detection in the designated cell within a preset channel available resource calculation period, a sum of transmission opportunity time lengths when the listen before talk channel access detection is successful each time;

and the third acquisition module is used for acquiring the measurement result of the channel resource state according to the sum of the acquired transmission opportunity time lengths.

In a fourth aspect, an embodiment of the present invention provides a load balancing apparatus, which is applied in a second base station, and the apparatus includes:

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

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

and the updating unit is used for updating the stored channel resource state of the designated cell according to the measurement result of the channel resource state.

a second obtaining unit, configured to obtain 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 state of the designated cell; or selecting the switching target cell of the terminal according to the updated channel resource state of the designated cell.

In a fifth aspect, an embodiment of the present invention provides a load balancing apparatus, which is applicable to a first base station, and includes a processor, a memory, and an input/output interface; the processor, the memory and the input/output interface are communicated through a bus; the memory is configured with computer code that the processor can call to control an input output interface;

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

the processor is configured to measure a channel resource state of the designated cell according to the measurement configuration information to obtain a measurement result of the channel resource state;

the processor is configured to include the measurement result of the channel resource state of the designated cell in a resource state update message and send the resource state update message to the second base station, so that the second base station updates the stored channel resource state of the designated cell.

In a sixth aspect, an embodiment of the present invention provides a load balancing apparatus, which is applicable to a second base station, and includes a processor, a memory, and an input/output interface; the processor, the memory and the input/output interface are communicated through a bus; the memory is configured with computer code that the processor can call to control an input output interface;

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

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

and the processor is used for updating the stored channel resource state of the designated cell according to the measurement result of the channel resource state.

The method and the device for load balancing provided by the embodiment of the invention are used for carrying out load balancing on a first base station which uses unauthorized frequency band communication, by acquiring a resource state request message carrying configuration information indicating a measured channel resource state, then detecting the channel resource state of a specified cell by the first base station, and sending a detected result to a second base station, so that the second base station carries out load balancing switching and/or mobility configuration parameter adjustment on the base station which uses unauthorized frequency band communication, and the second base station can select a target cell for terminal switching according to the channel resource state of the base station of the unauthorized frequency band. Compared with the prior art, when the load balancing is carried out on the first base station which uses the unauthorized frequency band for communication, the measurement process of the channel resource state is added, so that the influence of the cell channel occupation condition and the listen-before-talk mechanism on the channel resource state of the cell in the communication system of the unauthorized frequency band is considered when the load balancing is realized, the second base station can carry out the load balancing on the first base station according to the channel resource state, and the load balancing can be effectively carried out. In addition, the second base station can select a cell with a higher channel access rate as a handover target cell of the terminal according to the channel resource state, so that the handover time is reduced, and the handover efficiency is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

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

FIG. 2 is a diagram of a resource provided by an embodiment of the invention;

fig. 3 is a flowchart of another load balancing method according to an embodiment of the present invention;

fig. 4 is a flowchart of another load balancing method according to an embodiment of the present invention;

fig. 5 is a flowchart of another load balancing method according to an embodiment of the present invention;

fig. 6 is a structural diagram of a load balancing apparatus according to an embodiment of the present invention;

FIG. 7 is a block diagram of an alternative load balancing apparatus provided by an embodiment of the present invention;

FIG. 8 is a block diagram of an alternative load balancing apparatus provided by an embodiment of the present invention;

fig. 9 is a structural diagram of a load balancing apparatus according to an embodiment of the present invention;

FIG. 10 is a block diagram of an alternative load balancing apparatus provided by an embodiment of the present invention;

FIG. 11 is a block diagram of an alternative load balancing apparatus provided by an embodiment of the present invention;

fig. 12 is a block diagram of a load balancing apparatus according to an embodiment of the present invention;

fig. 13 is a structural diagram of a load balancing apparatus according to an embodiment of the present invention;

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

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

The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

In the LTE system, for a device applying LTE to perform communication, a currently available radio resource of the device is only related to a maximum radio resource and a radio resource already used by a cell currently served by the device, and for a communication device applying an unlicensed frequency band, since the radio resource of the unlicensed frequency band is a shared radio resource, when an initiator device performing load balancing performs load switching to a target device applying the unlicensed frequency band, if a channel occupancy rate of the target device is high, the target device needs to continuously monitor a channel and can send a response to the initiator device for load balancing after LBT (Listen Before Talk) is successful, whereas an existing method for load balancing based on the licensed frequency band communication system is used to perform load balancing on the communication device of the unlicensed frequency band, since real available radio resource information cannot be obtained, this results in poor load balancing.

In order to solve the problem of poor load balancing effect of a communication device applying an unlicensed frequency band, an embodiment of the present invention provides a load balancing method, which is applicable to a first base station applying unlicensed frequency band communication, and a flowchart of the method is shown in fig. 1, where the method includes:

the first base station applying the unlicensed frequency band communication is used as a target base station for load balancing.

101. A first base station acquires a resource state request message sent by a second base station, wherein the resource state request message comprises measurement configuration information indicating the resource state of a measurement channel of the first base station.

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 (e.g., multefire), or may be a base station that performs communication by using an licensed frequency band.

The measurement configuration information includes a channel resource state identifier and a channel resource state update period. The channel resource status identifier is used to indicate the first base station to measure the 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 containing the measurement result of the channel resource status.

It should be noted that the measurement configuration information is also used to indicate identifiers of resource status types such as a measurement radio resource usage status, a hardware load status, a transport network layer load status, a cell mixed available capacity status, and the like, and detection periods of these statuses.

102. And the first base station measures the channel resource state of the designated cell according to the measurement configuration information so as to obtain the measurement result of the channel resource state.

The measurement configuration information may indicate a cell identifier of the first base station measuring the channel resource status, and the specified cell may be a cell indicated in the measurement configuration information. Specifically, the first base station extracts an identifier indicating a measurement channel resource state and a measured cell identifier from the measurement configuration information, and the first base station responds to the resource state request information and measures the channel resource state of one or more cells indicated in the measurement configuration information according to the indication of the measurement channel resource state indicator identifier.

Wherein the channel resource status includes all available resources of the channel when the listen-before-talk mechanism is considered, and/or the remaining available resources of the unoccupied channel in the channel resources when the listen-before-talk mechanism is considered.

Wherein the unoccupied channel remaining available resource the channel remaining available resource comprises a channel remaining available resource number relative to a channel maximum resource and/or a channel remaining available resource number relative to the total available resources of the channel when the listen-before-talk mechanism is considered.

For the convenience of those skilled in the art, it is clearly understood that the schematic diagram shown in fig. 2 is provided based on the three relationships, i.e., the total available resources of the channels when the listen-before-talk mechanism is considered, the remaining available resources of the unoccupied channels in the channel resources when the listen-before-talk mechanism is considered, and the maximum resources of the channels.

And the first base station measures the channel resource state of the specified cell according to the indication of the channel resource state identifier by identifying the channel resource state identifier in the measurement configuration information.

Specifically, it is assumed that the predetermined channel resource status flag is 1, which indicates a measurement channel resource status. When the first base station extracts a channel resource state identifier from the measurement configuration information sent by the second base station, and when the first base station identifies that the identifier is 1, the channel resource state of the specified cell is measured; when the first base station recognizes that the identifier is not 1, the channel resource status of the designated cell is not measured.

It should be noted that the above specific description of the channel resource status identifier is only one implementation manner provided by the present invention, and is not intended to limit the present invention specifically.

103. And the first base station sends the measurement result of the channel resource state to the second base station by including the measurement result of the channel resource state in a resource state updating message.

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

And the second base station deletes the original information from the designated position for storing the channel resource state of the designated cell, then stores the acquired channel resource state to the designated position, and updates the stored channel resource state of the designated cell, so that the second base station can acquire the channel resource state of the designated cell, and performs load balancing switching and mobility configuration parameter adjustment on the designated cell by using the updated channel resource state of the designated cell. In addition, the updated channel resource state of the designated cell can also be used as a basis for selecting a target cell for handover for the terminal.

The load balancing method provided by the embodiment of the invention is used for carrying out load balancing on a first base station using unauthorized frequency band communication by acquiring a resource state request message carrying configuration information indicating a measured channel resource state, then detecting the channel resource state of a specified cell by the first base station, and sending a detected result to a second base station, so that the second base station carries out load balancing switching and/or mobility configuration parameter adjustment on the base station using the unauthorized frequency band communication. Compared with the prior art, when the load balancing is carried out on the first base station which uses the unauthorized frequency band for communication, the measurement process of the channel resource state is added, so that the influence of the cell channel occupation condition and the listen-before-talk mechanism on the channel resource state of the cell in the communication system of the unauthorized frequency band is considered when the load balancing is realized, the second base station can carry out the load balancing on the first base station according to the channel resource state, and the load balancing can be effectively carried out. In addition, the second base station can select a cell with a higher channel access rate as a handover target cell of the terminal according to the channel resource state, so that the handover time is reduced, and the handover efficiency is improved.

Further, with reference to the foregoing flow, in order to enable the second base station to obtain the channel resource state of the designated cell in the first base station more quickly and improve the efficiency of load balancing, as shown in fig. 3, after the first base station acquires the resource state request message sent by the second base station in step 101, the method further includes:

105. the first base station determines whether channel resource status measurements can be made for the designated cell.

106. And the first base station sends a resource state response message to the second base station, wherein the resource state response message comprises indication information indicating whether the channel resource state of the specified cell can be measured or not.

The resource status response message is a response message of the first base station responding to the resource status request message sent by the second base station. 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 unsuccessfully responds to the resource status request message sent by the second base station. Wherein, the response message of the first base station not successfully responding to the resource status request message sent by the second base station comprises: the response message sent when the first base station cannot successfully measure one or more measurement objects indicated in the resource status request message may also be 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 successful channel resource measurement identifier for the designated cell.

It should be added that, when it is determined that the first base station cannot perform the channel resource status measurement on the specified cell, the first base station determines a reason why the information resource status measurement cannot be performed, and sends 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 reason why the channel resource status measurement fails.

And the second base station executes corresponding operation through the indication information which indicates whether the channel resource state of the specified cell can be measured or not. For example, when the indication information indicates that the first base station can measure the channel resource state of the designated cell, the second base station waits to receive the measurement result of the first base station on the channel resource state measurement of the designated cell; if the indication information indicates that the first base station cannot measure the channel resource status of the designated cell, the second base station performs other operations, for example, the second base station chooses not to perform load balancing on the first base station.

Specifically, the format of the resource status response message may be as described in table 1, where an 8 th bit of resource status Measurement failure indication information measured Failed Report Characteristics IE is used as a channel resource status Measurement failure identifier, when the bit is 1, it indicates that the first base station fails to perform channel resource status Measurement on the Cell indicated in the Cell ID, and the Cause IE indicates a Cause of the channel resource status Measurement failure

TABLE 1

Specifically, the format of the resource status response message may also be the format described in table 2, where the 8 th bit of the resource status Measurement failure indication information measured Failed Report Characteristics IE is used as the channel resource status Measurement failure identifier, and when the bit is 1, the bit indicates that the first base station fails to perform channel resource status Measurement on the Cell indicated in the Cell ID, and the Cause IE indicates the reason for the channel resource status Measurement failure.

TABLE 2

It should be noted that the formats of the resource status response messages shown in table 1 and table 2 are only two specific implementations provided in the embodiment of the present invention, and are not limited to the present invention.

Further, with reference to the foregoing flow, another implementation manner is provided in the embodiment of the present invention, as shown in fig. 4, after the step 104 of updating, by the second base station, the stored channel resource state of the designated cell according to the measurement result of the channel resource state, the method includes:

107. the second base station sends a switching request or a mobile configuration parameter adjusting request aiming at load balancing to the first base station according to the updated channel resource state of the designated cell; or selecting the switching target cell of the terminal according to the updated channel resource state of the designated cell.

Further, with reference to the foregoing flow, in order to enable the second base station to know the usage of the channel resource of the first base station, in step 101, for the first base station to acquire the execution of the resource status request message sent by the second base station, an embodiment of the present invention provides another implementation manner, and as shown in fig. 5, step 101 specifically includes:

1011. and the first base station acquires the channel resource state identifier from a first new sub information unit or a first existing sub information unit in the resource state request message.

The second base station adds a new mark for indicating the first base station to measure the channel resource state in the resource state request message according to the communication protocol between the second base station and the first base station or uses the existing appointed mark in the resource state request message according to the communication protocol to indicate the first base station to measure the channel resource state.

Specifically, for example, the protocol between the first base station and the second base station takes an idle bit in a reportcharateristics information element in the resource status request information, for example, a bit value carried by an 8 th bit (or 32 th bit) as a channel resource status measurement identifier, and when the idle bit is 1, the channel resource status measurement identifier indicates that the first base station performs channel resource status measurement on the specified cell.

Or, specifically, for example, the second base station and the first base station may agree with the channel resource status indicator and the indicator indicating the measured cell remaining Capacity value to share one indicator, that is, the indicator originally used for indicating the measured cell remaining Capacity value is used for indicating the measured cell remaining Capacity and the channel resource status at the same time. And when the second base station acquires the cell residual capacity identifier, starting to measure the channel resource state. It should be noted that the above two specific implementations are only provided as examples, and are not intended to limit the present invention, and all implementations within the principle of the present invention belong to one implementation of the present invention.

1012. And the first base station acquires a channel resource state updating period from a second newly-added sub-information unit or a second existing sub-information unit in the resource state request message.

It should be noted that the channel resource status update period may be the same as the update period of the other resource indicated by the measurement configuration information, or may be different from the update period of the other resource.

When the resource state request information is the same as the update period of other resources, the first base station and the second base station protocol use the update period of other resources to carry the channel resource state update period in the resource state request information, for example, use Reporting Periodicity in the resource request information to carry the channel resource state update period, that is, share one update period with other resources.

When the updating period is different from that of other resources, the protocol of the first base station and the second base station adds an information unit in the resource state request information to carry the channel resource state updating period.

For the convenience of those skilled in the art to understand, in combination with the implementation principle of the above steps 1011 and 1012, a resource status request information format is provided as shown in table 3 for the load balancing method of the embodiment of the present invention:

TABLE 3

It should be noted that the format of the resource status request message is only a specific implementation manner provided by the present invention, and is not a limitation to the present invention, and all that is within the principle of the present invention belongs to an implementation manner of the present invention.

Further, in combination with the foregoing flow, for the implementation that the measurement result of the channel resource state is included in the resource state update message and sent to the second base station in step 103, the following several ways are provided in the embodiments of the present invention:

in a first way,

1031. And the measurement result of all available resources of the channel considering listening before speaking is contained in a newly added information unit of the resource state updating message and is sent to the second base station.

The first base station is used for carrying the measurement result considering all available resources of the LBT channel in a newly added information unit of the resource state updating message according to a communication protocol between the first base station and the second base station. The second base station can obtain the channel access capability of the designated cell after designating all available resources of the channel considering the listening and speaking in the designated cell, and the larger all the available resources are, the higher the channel access capability is.

It should be noted that the channel resource status may be further specifically divided into an uplink channel resource status and a downlink channel status, and therefore, the measurement result carried in the new information unit of the resource status update message may indicate the available resource statuses of the uplink channel and the downlink channel at the same time, and may also indicate the available resource of the uplink channel and the available resource of the downlink channel respectively.

When the information unit is used to indicate Available resources of an uplink channel and a downlink channel at the same time, an information unit is added to the newly added information unit of the resource status update message to carry the measurement result, for example, as shown in table 2, a ChannelAvailable Value information unit is added to a Composite Available Capacity Group information unit of a Composite Available Capacity Group in the resource status update message, and is used to indicate channel Available resources of a cell; when indicating the Available resources of the Uplink Channel and the Downlink Channel, respectively, two information units are added to a newly added information unit of the resource status update message to respectively carry a measurement result of the Available resources of the Uplink Channel and a measurement result of the Available resources of the Downlink Channel, for example, Channel Available Value is added to a Downlink Composite Available Capacity Downlink and an Uplink Composite Available Capacity Uplink information unit in a Composite Available Capacity Group information unit in the resource status update message to respectively indicate the Available resources of the Downlink Channel and the Available resources of the Uplink Channel, and formats of the Composite Available Capacity Downlink and the Composite Available Capacity Uplink information units are shown in table 4

TABLE 4

TABLE 5

It should be noted that tables 4 and 5 are only formats of information units provided for the above specific examples, and are not intended to limit the present invention.

The second way,

1032. And the measurement result of the unoccupied channel residual available resource in the channel resource considering listen before talk is contained in the existing information unit of the resource state updating message and is sent to the second base station.

The unoccupied available resources in the channel resources considering listening and speaking before the designated cell do not include the channel resources used by the designated cell, and can reflect the load condition of the designated cell, the second base station can obtain the load condition of the designated cell after the unoccupied channels in the channel resources considering listening and speaking before the designated cell remain the available resources, and the larger the remaining available resources, the lower the load. The channel remaining available resources include a channel remaining available resource number relative to a channel maximum resource and/or a channel remaining available resource number relative to a total available resource of the channel when the listen-before-talk mechanism is considered.

Specifically, in the prior art, an information unit for indicating the remaining available resources exists, and this embodiment proposes to multiplex the information unit to implement a bearer for a measurement result of an unoccupied channel remaining available resource in consideration of the channel resources that are listened to before being spoken. For example, as shown in table 6, the Composite Available Capacity Downlink in the Composite Available Capacity group information element and the Capacity Value in the Composite Available Capacity Uplink information element in the multiplexing resource status update message respectively indicate the Available resources of the Downlink channel and the Available resources of the Uplink channel.

TABLE 6

It should be noted that the foregoing merely provides a specific implementation manner for the embodiments of the present invention, and does not specifically limit the present invention.

The third method,

1033. And the measurement result of the unoccupied channel residual available resource in the channel resources considering listening before speaking is contained in a newly added information unit of the resource state updating message and is sent to the second base station.

The channel remaining available resources include a channel remaining available resource number relative to a channel maximum resource and/or a channel remaining available resource number relative to a total available resource of the channel when the listen-before-talk mechanism is considered.

The specific implementation process is similar to the implementation process of the first embodiment, and is not described herein again.

It should be particularly noted that, the above three manners may be combined arbitrarily, that is, the manner one and the manner two are combined to send the measurement result of the available resources to the second base station, the manner one and the manner three are combined to send the measurement result of the available resources to the second base station, or the manner two and the manner three are combined to send the measurement result of the available resources to the second base station. When the measurement result of the available resources is transmitted to the second base station by using the combination of the second and third modes, it is preferable that the second and third modes transmit the remaining available resources of different channels, for example, the second base station transmits the number of the remaining available resources of the channel relative to the maximum resources of the channel to the second base station by using the second mode, and simultaneously the second base station transmits the number of the remaining available resources of the channel relative to all available resources of the channel when the listen before talk mechanism is considered by using the third mode. Through the combination of any two ways, the second base station can simultaneously obtain the channel access capability and the load condition of the designated cell.

Further, in combination with the foregoing process, the embodiment of the present invention provides two implementation manners for performing channel resource status measurement on the designated cell to obtain a measurement result of the channel resource status,

in a first way,

1021A, in a preset channel resource state calculation period, detecting the time length of the channel power in the specified cell being lower than the detection threshold of listening before speaking.

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

Wherein, the channel power refers to the power value of the carrier frequency of the channel.

In order to obtain a more accurate measurement result of the resource state, it is preferable that the detection channel power is lower than the duration of the listen-before-talk detection threshold in the idle time of the preset channel resource state calculation period. The idle time refers to a time when there is no uplink transmission or no downlink transmission in the channel.

1022A, according to the detected time length, obtaining the measurement result of the channel resource state.

The first base station firstly determines the ratio of the time length of the detected channel power lower than the LBT detection threshold to the channel resource calculation period, and then calculates the available channel resource by calculating the product of the ratio and the resource number of the maximum unauthorized frequency band of the first base station.

This is specifically exemplified for ease of understanding by those skilled in the art. For example, the preset channel resource calculation period is 1000ms, the length of time during which the measured channel power is lower than the LBT detection threshold in the idle time of the preset channel resource calculation period is 800ms, the ratio of the two is calculated to be 0.8, and if the maximum total number of resources of the cell is 100, the number of available resources of the channel is calculated to be 80(100 × 0.8).

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

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

10222A, obtaining the measurement result of the channel resource state according to the data transmission time and the time length of the channel power lower than the listen-before-talk detection threshold in the specified cell in the preset channel resource state calculation period.

The measurement results of the channel resource status obtained through the step 10221A and the step 10222A may be divided into two types, where the first type is to determine the sum of the uplink data transmission time and the downlink data transmission time of the designated cell in the preset channel resource status calculation cycle, and obtain the measurement result of the channel resource status according to the total data transmission time.

This process is illustrated in conjunction with the following specific examples:

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

And 2, respectively calculating the uplink channel resource state and the downlink channel resource state.

Step 1, respectively obtaining uplink data transmission time and downlink data transmission time of the designated cell in the preset channel resource state calculation period.

And 2, allocating the time length of the designated cell, in which the channel power is lower than the listen before talk detection threshold in the idle time in the preset channel resource state calculation period, to the uplink channel and the downlink channel according to a preset proportion.

And 3, obtaining the measurement results of the uplink channel resource state and the downlink channel resource state according to the distribution result, the uplink data transmission time and the downlink data transmission time.

assuming that the calculation cycle of available resources of the channel is 1000ms, wherein the service time for acquiring the downlink channel is 75ms, and the service time for acquiring the uplink channel is 25 ms; then, assuming that the time length of the first base station measuring that the channel power is lower than the LBT detection threshold in the idle time is 800ms, the first base station allocates the 800ms to the downlink channel for 600ms and the uplink channel for 200ms according to the preset proportion, and allocates the channel available resource calculation period to the downlink channel for 750ms and the uplink channel for 250 ms; therefore, according to the allocation result, the sum of the time allocated to the downlink when the downlink service transmission time and the channel power are lower than the detection threshold is calculated to be 675ms, the sum of the time allocated to the downlink when the uplink service transmission time and the channel power are lower than the detection threshold is calculated to be 225ms, if the total number of the downlink theoretical resources of the cell is 100, the number of the available resources of the downlink channel is calculated to be 675/750 × 100 — 90, and the number of the available resources of the downlink channel is calculated to be 225/250 × 100 — 90.

The second way,

1021B, when performing several times of listen before talk channel access detection in the designated cell within a preset channel available resource calculation period, acquiring the sum of transmission opportunity time lengths when the listen before talk channel access detection is successful each time.

1022B, obtaining a measurement result of the channel resource state according to the sum of the obtained transmission opportunity time lengths.

According to the mode provided by the mode two, the following specific examples are combined:

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

It should be noted that the two manners for measuring the channel resource status provided above are only calculated based on the LBT mechanism at the base station side, and the uplink channel resource status can also be calculated based on the LBT mechanism at the base station side and the LBT mechanism at the terminal side, but the base station cannot directly obtain the channel access detection condition based on the LBT at the terminal side, and the channel access detection condition at the terminal side needs to be obtained by estimating the received uplink data or by measuring and reporting the terminal. The measurement method obtained by joint calculation based on the base station side LBT mechanism and the terminal side LBT mechanism is not described in detail.

Based on the foregoing method, an embodiment of the present invention provides a load balancing apparatus, which is applicable to a first base station, and a structure diagram of the apparatus is shown in fig. 6, where the apparatus includes:

a first obtaining unit 21, configured to obtain a resource status request message sent by a second base station, where the resource status request message includes measurement configuration information indicating a channel resource status measured by the first base station;

a measuring unit 22, configured to measure a channel resource status of the designated 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 the measurement result of the channel resource status of the designated cell in a resource status update message and send the resource status update message to the second base station, so that the second base station updates the stored channel resource status of the designated cell.

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

Optionally, as shown in fig. 7, the apparatus further includes:

a determining unit 24, configured to determine whether channel resource status measurement can be performed on the designated cell.

A second sending unit 25, 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:

a sending module 251, configured to send a resource status response message to the second base station if the cell indicated in the measurement configuration information cannot be subjected to channel resource status measurement, where the resource status response message includes a channel resource status measurement failure identifier of the cell and a reason for the channel resource status measurement failure

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

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

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

Optionally, the first obtaining unit 21 includes:

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

A second obtaining module 212, configured to obtain a channel resource status update period from a second new sub information unit or a second existing sub information unit in the resource status request message.

Optionally, the channel resource status includes all available resources of the channel when the listen-before-talk mechanism is considered, and/or remaining available resources of unoccupied channels among the channel resources when the listen-before-talk mechanism is considered.

Optionally, the remaining available resources of the channel include a remaining available resource number of the channel relative to a maximum resource of the channel, and/or a remaining available resource number of the channel relative to a total available resource of the channel when the listen-before-talk mechanism is considered.

Optionally, the first sending unit 23 includes:

a first sending module 231, configured to send the measurement result of all available resources of the channel considering listen before talk to the second base station, including the measurement result in the new information element of the resource status update message; and/or the presence of a gas in the gas,

a second sending module 232, configured to send the measurement result of the unoccupied channel remaining available resource in the channel resource considered to be listened to before talk to the second base station by including the measurement result in the existing information unit of the resource status update message.

Optionally, the first sending unit 23 includes:

a third sending unit 234, configured to send the measurement result of the unoccupied channel remaining available resource in the channel resource considered to be listened to before talk to the second base station, including the measurement result in the new information element of the resource status update message; and/or the presence of a gas in the gas,

a fourth sending unit 235, configured to send the measurement result of the remaining available resource of the unoccupied channel in the channel resource considering listen before talk to the second base station by including the measurement result in the existing information unit of the resource status update message.

Optionally, the measuring unit 22 includes:

the detecting module 221 is configured to detect, in a preset channel resource state calculation period, a time length during which the channel power in the designated cell is lower than a listen-before-talk detection threshold.

A first obtaining module 222, configured to obtain a measurement result of the 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 calculating period, a time length during which a channel power in the designated cell is lower than a listen-before-talk 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 time length during which the channel power in the designated cell is lower than a listen-before-talk detection threshold in a preset channel resource state calculation period.

Optionally, the first obtaining module 222 further includes:

the determining submodule 2223 is further configured to obtain uplink data transmission time and downlink data transmission time of the designated cell in the preset channel resource state calculation cycle, respectively.

The allocating submodule 2224 is configured to allocate, according to a preset ratio, the length of time during which the channel power of the designated cell in the idle time in the preset channel resource state calculation cycle is lower than the listen-before-talk detection threshold to the uplink channel and the downlink channel.

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

Optionally, the measuring unit 22 further includes:

a second obtaining module 223, configured to obtain, when performing several times of listen before talk channel access detection in the designated cell within a preset channel available resource calculation period, a sum of transmission opportunity time lengths when the listen before talk channel access detection is successful each time.

A third obtaining module 224, configured to obtain a measurement result of the channel resource status according to the sum of the obtained transmission opportunity time lengths.

An embodiment of the present invention provides a load balancing apparatus, which is applicable to a second base station, and the apparatus shown in fig. 9 includes:

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

A first obtaining unit 32, configured to obtain 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 a specified cell.

An updating unit 33, 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 apparatus further includes:

a second obtaining unit 34, configured to obtain 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:

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

The load balancing device provided in the embodiment of the present invention performs load balancing for a first base station using unlicensed frequency band communication by acquiring a resource state request message carrying measurement configuration information indicating a measurement channel resource state, and then the first base station performs channel resource state detection for a specified cell and sends a detected result to a second base station, so that the second base station performs load balancing switching and/or mobility configuration parameter adjustment for the base station using unlicensed frequency band communication. Compared with the prior art, the technical method provided by the invention has the advantages that when the load balancing is carried out on the first base station which uses the unauthorized frequency band for communication, the measurement process of the channel resource state is added, so that the influence of the cell channel occupation condition and the listen-before-talk mechanism on the channel resource state of the cell in the communication system of the unauthorized frequency band is considered when the load balancing is realized, the second base station can carry out the load balancing on the first base station according to the channel resource state, the switching time is effectively shortened, and the switching efficiency is improved.

An embodiment of the present invention provides a load balancing apparatus, which is suitable for a first base station, as shown in fig. 12, the apparatus includes a processor 41, a memory 42, and an input/output interface 43; the processor 41, the memory 42 and the input/output interface 43 communicate through a bus; the memory has computer code configured therein that the processor 41 can call to control the input output interface;

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

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

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

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

Optionally, the processor 41 is further configured to determine whether channel resource status measurement can be performed on the designated cell; and sending a resource status response message to the second base station, wherein the resource status response message includes indication information indicating whether the channel resource status of the designated cell can be measured.

Optionally, the processor 41 is further 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 in the measurement configuration information, where the resource status response message includes a channel resource status measurement failure identifier of the cell and a reason for the channel resource status measurement failure.

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

Optionally, the measurement configuration information includes a channel resource state identifier and a channel resource state update period; the channel resource status identifier is used to indicate the first base station to measure the 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 containing the measurement result of the channel resource status.

Optionally, the processor 41 is further configured to obtain a channel resource status identifier from a first new sub information unit or a first existing sub information unit in the resource status request message; and acquiring a channel resource state updating period from a second newly added sub-information unit or a second existing sub-information unit in the resource state request message.

Optionally, the remaining available resources of the channel include a number of remaining available resources of the channel relative to a maximum resource of the channel, and/or a number of remaining available resources of the channel relative to all available resources of the channel when the listen-before-talk mechanism is considered.

Optionally, the processor 41 is further configured to include a measurement result of all available resources of the channel considering listen before talk in an additional information unit of the resource status update message, and send the measurement result to the second base station; and/or, the measurement result of the unoccupied channel residual available resource in the channel resource considering listen before talk is contained in the existing information unit of the resource state updating message and is sent to the second base station.

Optionally, the processor 41 is further configured to include a measurement result of the unoccupied channel remaining available resource in the channel resource considered to be listened to before talk to the second base station in a new information element of the resource status update message, and send the measurement result to the second base station; and/or, the measurement result of the unoccupied channel residual available resource in the channel resource considering listen before talk is contained in the existing information unit of the resource state updating message and is sent to the second base station.

Optionally, the processor 41 is further configured to detect, in a preset channel resource state calculation period, a time length that the channel power in the designated cell is lower than a listen-before-talk detection threshold; and obtaining a measurement result of the channel resource status according to the detected time length.

Optionally, the processor 41 is further configured to detect a time length during which the channel power is lower than the listen-before-talk detection threshold in an idle time of a preset channel resource status calculation period.

Optionally, the processor 41 is further configured to determine a data transmission time of the designated cell in the preset channel resource state calculation period; and the device is used for obtaining the measurement result of the channel resource state according to the data transmission time and the time length that the channel power in the specified cell is lower than the detection threshold of listening before speaking in the preset channel resource state calculation period.

Optionally, the processor 41 is further configured to obtain uplink data transmission time and downlink data transmission time of the designated cell in the preset channel resource state calculation cycle, respectively.

The processor 41 is further configured to allocate, according to a preset ratio, the length of time during which the channel power of the designated cell is lower than the listen-before-talk detection threshold in the idle time in the preset channel resource state calculation period to the uplink channel and the downlink channel.

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

Optionally, the processor 41 is further configured to, when performing several times of listen before talk channel access detection in a specified cell within a preset channel available resource calculation period, obtain a sum of transmission opportunity time lengths when each time of listen before talk channel access detection is successful; and the measuring result of the channel resource state is obtained according to the sum of the acquired transmission opportunity time lengths.

An embodiment of the present invention provides a load balancing apparatus, which is suitable for use in a second base station, as shown in fig. 13, the apparatus includes a processor 51, a memory 52, and an input/output interface 53; the processor 51, the memory 52 and the input/output interface 53 communicate through a bus; the memory 52 has computer code configured therein that the processor 51 can call to control the input output interface;

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

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 a designated 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, include:

Optionally, the processor 51 is further 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 state of the designated cell; or, the method is used for selecting the switching target cell of the terminal according to the updated channel resource state of the designated cell.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A method for load balancing, applied in a first base station, the method comprising:

2. The method of claim 1, wherein after the obtaining the resource status request message sent by the second base station, the method further comprises:

3. The method of claim 2, wherein the sending a resource status response message to the second base station, the resource status response message including indication information indicating whether the cell channel resource status measurement indicated in the measurement configuration information can be performed comprises:

and if the cell indicated in the measurement configuration information cannot be subjected to channel resource state measurement, sending a resource state response message to the second base station, wherein the resource state response message comprises a channel resource state measurement failure identifier of the cell and a reason for the channel resource state measurement failure.

4. The method of claim 1, wherein the obtaining the resource status request message sent by the second base station comprises:

5. A method for load balancing, adapted for use in a second base station, the method comprising:

6. An apparatus for load balancing, adapted for use in a first base station, the apparatus comprising:

7. An apparatus for load balancing, adapted for use in a second base station, the apparatus comprising:

8. An apparatus for load balancing, adapted for use in a first base station, the apparatus comprising a processor, a memory, and an input output interface; the processor, the memory and the input/output interface are communicated through a bus; the memory is configured with computer code that the processor can call to control an input output interface;

9. An apparatus for load balancing, adapted for use in a second base station, the apparatus comprising a processor, a memory and an input output interface; the processor, the memory and the input/output interface are communicated through a bus; the memory is configured with computer code that the processor can call to control an input output interface;