CN106912071B - A method and device for triggering load balancing based on LTE relative load difference - Google Patents

Abstract

The present invention provides a method and device for triggering load balancing based on LTE relative load difference. The method includes: acquiring a current network load scenario, and acquiring the LTE real-time air interface load of a serving cell and an acceptable neighbor cell under the current network load scenario Performance indicators; configure the threshold value of the LTE real-time air interface load performance indicators corresponding to the current network load scenario; according to the obtained LTE real-time air interface load performance indicators of the serving cell and admissible neighboring cells, and the LTE real-time air interface load performance indicators corresponding to the configured current network load scenario The threshold value of the real-time air interface load performance index is used to judge whether load balancing processing needs to be performed on the serving cell and the admissible neighbor cell; when the obtained LTE real-time air interface load performance index of the serving cell and admissible neighbor cell corresponds to the configured current network load scenario When the LTE real-time air interface load performance index threshold value of the LTE real-time air interface matches the threshold value, load balancing processing is performed on the serving cell and the admissible neighboring cell.

Description

A method and device for triggering load balancing based on LTE relative load difference

technical field

The present invention relates to the field of mobile communication, in particular to a method and device for triggering load balancing based on LTE relative load difference.

Background technique

With the gradual increase in the number of long-term evolution (LTE) users of universal mobile communication technology, resources in hotspot areas have gradually begun to fail to meet the needs of users, and the load between cells and frequencies is unbalanced, and load balancing algorithms are gradually becoming more important.

The load balancing algorithm reasonably deploys the operating traffic of the cell according to the load status of the serving cell and its admissible neighbor cells, and effectively uses the system resources to improve the system capacity and the stability of the system.

The algorithm is usually divided into a measurement phase, a decision phase and an execution phase. In the measurement phase, the load status of the serving cell and the load status of the admissible neighboring cells are continuously monitored and updated; in the judgment phase, it is determined whether the serving cell is in a high load state according to the measurement information collected in the measurement phase: if the serving cell is in a high load state, the load is balanced. will be triggered during the execution phase.

Load judgment conditions of existing load balancing algorithms are generally divided into air interface load, evolved base station (eNodeB) hardware load and transmission load. The air interface load is mainly based on the resource resource block (PRB) utilization rate of the cell, the PRB evaluation value, and the number of users; the eNodeB hardware load is based on the system evaluation of hardware resource usage such as the central processing unit (CPU) and digital signal processor (DSP); transmission load It is measured based on system evaluation bandwidth usage. At present, the air interface load is the most important load judgment condition.

However, existing load balancing algorithms usually have the following shortcomings:

The load balancing algorithm is triggered by judging whether the set load threshold is met, and the admission of neighboring cells is also based on similar settings to judge whether admission is allowed; both are based on the traditional judgment of absolute high and low load. The middle ground does not have a mechanism based on relative threshold triggering. For example, if the load PRB utilization rate of a serving cell reaches 70%, which is the trigger condition for load balancing, and the admission peak value of the PRB utilization rate of the adjacent cell is 65%, then the load PRB utilization rate of the serving cell reaches 70%, and the load PRB utilization rate of the serving cell reaches 70%. Users will not continue to accept after reaching 65%. However, when the PRB utilization rate of a serving cell is 65%, the PRB utilization rate of the admissible neighboring cells is lower than 35%. In this case, if the serving cell performs load offloading, it will balance the network and improve user perception, but the existing algorithm does not. Load balancing will be triggered.

There are two types of load balancing algorithms: blind handover based and measurement event based, and usually only one of the two can be selected. The default configuration of the indoor cell is based on the equalization algorithm based on blind handover, and the macro station is generally set to be based on measurement. However, considering the best effect of balancing and saving network resources (based on measurement events, which consumes more resources than blind switching), if the macro station has a cell with the same coverage, it can give priority to blind handover when the CPU load allows, and perform cell balance with the same coverage . In addition, the "same coverage" in the blind switching equalization algorithm is manually set, and there is no relevant algorithm for intelligent definition. The manual setting cannot carry out intelligent analysis of big data, and it is obviously affected by the skills of optimizers.

After the load balancing algorithm is turned on, it will not be turned off automatically, which will consume resources such as signaling, increase the network load of the evolved Universal Terrestrial Radio Access Network (UTRAN), reduce the UTRAN user experience, and cause capacity loss.

SUMMARY OF THE INVENTION

The present invention provides a method and device for triggering load balancing based on LTE relative load difference. First, "same coverage" is a problem of manual setting.

In order to achieve the above object, an embodiment of the present invention provides a method for triggering load balancing based on an LTE relative load difference, including:

Obtain the current network load scenario, and obtain the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cell under the current network load scenario;

According to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value, configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario;

According to the obtained LTE real-time air interface load performance indicators of the serving cell and admissible adjacent cells, and the configured LTE real-time air interface load performance index threshold value corresponding to the current network load scenario, it is judged whether it is necessary to perform execution on the serving cell and admissible adjacent cells. Load balancing processing;

When the acquired LTE real-time air interface load performance indicators of the serving cell and admissible neighbor cells match the configured LTE real-time air interface load performance indicator thresholds corresponding to the current network load scenario, perform load balancing processing on the serving cell and admissible neighbor cells .

Preferably, the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cells at least include:

The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in the active state, and the PRB utilization rate of the adjacent cells that can be accommodated.

Preferably, according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance indicator threshold value, configure the LTE real-time air interface load performance indicator threshold value corresponding to the current network load scenario, specifically including:

According to the preset network load scenario model, the PRB utilization rate trigger threshold of the serving cell, the admission threshold of PRB utilization rate of the admissible neighbor cell, the relative threshold of PRB utilization rate between the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the admission threshold of the PRB utilization of the admissible neighboring cells, the relative threshold of the PRB utilization of the serving cell and the admissible neighboring cells, and the number of UEs in the serving cell. number threshold.

Preferably, load balancing processing is performed on the serving cell and the admissible neighbor cells, including:

If the coverage type of the serving cell is indoor distribution, the same coverage determination is performed on the serving cell and all admissible adjacent cells to obtain the same coverage cell of the serving cell;

Select the same coverage cell as the receiving cell;

Enable the blind handover between the accepting cell and trigger the load balancing between the accepting cell.

Preferably, load balancing processing is performed on the serving cell and the admissible neighbor cells, including:

If the coverage type of the serving cell is macro, then the serving cell and all admissible adjacent cells will be judged with the same coverage to determine whether there is a cell with the same coverage of the serving cell:

If it exists, select the same coverage cell as the receiving cell;

Enable blind handover between the accepting cell and trigger the load balancing between the accepting cell;

If it does not exist, the measurement event-based handover with the admissible neighbor cell is enabled to trigger load balancing with the admissible neighbor cell.

Preferably, the same coverage determination is performed on the serving cell and all admissible adjacent cells, including:

Sweep the serving cell and all admissible neighboring cells and obtain sweep data;

If, in the frequency sweep data, the ratio of the number of sampling points to the total number of sampling points from the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value to the total number of sampling points is greater than the second preset value. If the value is set, the measurement report data of the admissible neighbor cell and the serving cell are obtained;

If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the third preset value is greater than the fourth preset value, and the measurement report data contains The total number of sampling points is greater than the fifth preset value, then the admissible neighbor cell is the same coverage cell of the serving cell.

Preferably, after enabling the blind handover between the accepting cells and triggering the load balancing between the accepting cells and the accepting cells, the method further includes:

The personality offset between the serving cell and the receiving cell is set as a first preset value.

Preferably, after performing load balancing processing on the serving cell and the admissible neighbor cells, the method further includes:

Monitor whether the load of the serving cell has been balanced:

If balanced, disable load balancing with admissible neighbors.

In order to achieve the above object, an embodiment of the present invention also provides an apparatus for triggering load balancing based on the LTE relative load difference, including:

an obtaining module, used to obtain the current network load scenario, and obtain the LTE real-time air interface load performance indicators of the serving cell and the admissible adjacent cell under the current network load scenario;

a configuration module, configured to configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value;

The judgment module is used for judging whether the serving cell and the LTE real-time air interface load performance index corresponding to the current network load scenario are configured according to the acquired LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell. Can accept neighboring cells to perform load balancing processing;

The execution module is configured to, when the acquired LTE real-time air interface load performance index of the serving cell and the admissible neighbor cell matches the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario, perform the evaluation on the serving cell and the admissible neighbor cell. The zone performs load balancing processing.

Preferably, the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cells at least include:

The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in the active state, and the PRB utilization rate of the adjacent cells that can be accommodated.

Preferably, the configuration module is specifically used for:

According to the preset network load scenario model, the PRB utilization rate trigger threshold of the serving cell, the admission threshold of PRB utilization rate of the admissible neighbor cell, the relative threshold of PRB utilization rate between the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the admission threshold of the PRB utilization of the admissible neighboring cells, the relative threshold of the PRB utilization of the serving cell and the admissible neighboring cells, and the number of UEs in the serving cell. number threshold.

Preferably, the execution module includes:

The first execution sub-module is used for, if the coverage type of the serving cell is indoor distribution, perform the same coverage determination on the serving cell and all admissible neighboring cells, and obtain the same coverage cell of the serving cell;

Select the same coverage cell as the receiving cell;

Enable the blind handover between the accepting cell and trigger the load balancing between the accepting cell.

Preferably, the execution module includes:

The second execution sub-module is used to perform the same coverage judgment on the serving cell and all admissible neighboring cells if the coverage type of the serving cell is a macro cell, and determine whether there is a same coverage cell of the serving cell:

If it exists, select the same coverage cell as the receiving cell;

Enable blind handover between the accepting cell and trigger the load balancing between the accepting cell;

If it does not exist, the measurement event-based handover with the admissible neighbor cell is enabled to trigger load balancing with the admissible neighbor cell.

Preferably, the execution module includes a co-coverage determination sub-module for performing co-coverage determination on the serving cell and all admissible adjacent cells, specifically for:

Sweep the serving cell and all admissible neighboring cells and obtain sweep data;

If, in the frequency sweep data, the ratio of the number of sampling points to the total number of sampling points from the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value to the total number of sampling points is greater than the second preset value. If the value is set, the measurement report data of the admissible neighbor cell and the serving cell are obtained;

If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the third preset value is greater than the fourth preset value, and the measurement report data contains The total number of sampling points is greater than the fifth preset value, then the admissible neighbor cell is the same coverage cell of the serving cell.

Preferably, the device further includes:

The setting module is used for enabling blind handover with the accepting cell, and after triggering the load balancing between the accepting cell and the serving cell, setting the personality offset between the serving cell and the accepting cell to a first preset value.

Preferably, the device further includes:

The monitoring module is used for the execution module to perform load balancing processing on the serving cell and the admissible neighboring cells,

Monitor whether the load of the serving cell has been balanced:

If balanced, disable load balancing with admissible neighbors.

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

In the above-mentioned embodiment of the present invention, the load balancing is triggered by configuring the serving cell and the relative load threshold of the acceptable adjacent cell, which effectively solves the limitation of the existing load balancing algorithm to trigger through the absolute load threshold, and improves the performance of the load balancing algorithm. Covering scenarios and performing all-round load balancing; intelligently determine the same coverage cells through frequency sweep and measurement report analysis, expand the bandwidth of network equipment and servers, and maximize network resource utilization; real-time monitoring of network load, when the serving cell no longer When load balancing is required, disable the load balancing to reduce the capacity loss caused by the corresponding network overhead and improve the UTRAN user experience.

Description of drawings

FIG. 1 is a flow chart of basic steps of a method for triggering load balancing based on an LTE relative load difference provided by the first embodiment of the present invention;

2 is a flowchart of basic steps of a method for triggering load balancing based on an LTE relative load difference provided by a second embodiment of the present invention;

3 is a flowchart of basic steps of a method for triggering load balancing based on an LTE relative load difference provided by a third embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an apparatus for triggering load balancing based on an LTE relative load difference provided by a fourth embodiment of the present invention;

FIG. 5 is a schematic diagram of a scene of a specific embodiment of the first embodiment of the present invention.

Detailed ways

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

Aiming at the existing problems, the present invention provides a method and device for triggering load balancing based on the LTE relative load difference.

first embodiment

Referring to FIG. 1, a first embodiment of the present invention provides a method for triggering load balancing based on an LTE relative load difference, including:

Step 101: Acquire a current network load scenario, and acquire LTE real-time air interface load performance indicators of a serving cell and an acceptable neighbor cell under the current network load scenario.

Among them, the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cells include at least:

The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in the active state, and the PRB utilization rate of the adjacent cells that can be accommodated.

Among them, a PRB contains 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols in the time domain, that is, the width in the frequency domain is 180KHz, and the time length in the time domain is 0.5ms (one slot).

The calculation formula of PRB utilization is as follows (the calculation formula of PRB utilization of uplink/downlink is the same, and the calculation formula of PRB utilization of the following row is taken as an example):

When the single-user guaranteed rate (Cell-D1NgbrTotalPBR) of the downlink non-guaranteed rate service of the cell is less than the total downlink throughput of the cell (Cell-D1NgbrTotalThroughput),

When Cell-DlNgbrTotalPBR is greater than or equal to Cell-DlNgbrTotalThroughput,

P=(Cell-DlPrbUsedNgbr+Cell-DlPrbUsedGbr)/dwDlTotalAvailRB

Among them, P is the PRB utilization rate, Cell-DlPrbUsedNgbr is the number of PRBs occupied by downlink non-guaranteed rate services, dwDlTotalAvailRB is the total number of available downlink radio bearers (RBs), and Cell-DlPrbUsedGbr is the number of PRBs occupied by downlink guaranteed rate services. number.

Step 102: Configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value.

Among them, in different network load scenario models, the air interface load performance is different, so it is necessary to configure the LTE real-time air interface load performance index threshold value according to the current network load scenario.

In the above-mentioned embodiment of the present invention, step 102 specifically includes:

According to the preset network load scenario model, the PRB utilization rate trigger threshold of the serving cell, the admission threshold of PRB utilization rate of the admissible neighbor cell, the relative threshold of PRB utilization rate between the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the admission threshold of the PRB utilization of the admissible neighboring cells, the relative threshold of the PRB utilization of the serving cell and the admissible neighboring cells, and the number of UEs in the serving cell. number threshold.

Among them, the triggering threshold of the PRB utilization rate of the serving cell is the lowest value that triggers load balancing, and the relative threshold of the PRB utilization rate between the serving cell and the admissible neighbor cell is the difference between the PRB utilization rate of the serving cell that triggers load balancing and the admissible neighbor cell. The lowest value of , the admission threshold of the PRB utilization rate of the admissible neighbor cell is the highest value of the admissible neighbor cell to accept the offload from the serving cell.

Step 103, according to the acquired LTE real-time air interface load performance indicators of the serving cell and the admissible adjacent cells, and the configured LTE real-time air interface load performance index threshold value corresponding to the current network load scenario, determine whether it is necessary to adjust the serving cell and the admissible adjacent cells. Neighbors perform load balancing processing.

Among them, according to the obtained air interface load performance index and the configured air interface load performance index threshold value, it is judged whether load balancing processing needs to be performed, that is, when the PRB utilization rate of the serving cell reaches the PRB utilization rate trigger threshold of the serving cell, it can be accepted. When the PRB utilization rate of the adjacent cell does not reach the admission threshold of the PRB utilization rate of the admissible adjacent cell, and the difference between the PRB utilization rate of the serving cell and the admissible adjacent cell reaches the relative threshold of the PRB utilization rate of the serving cell and the admissible adjacent cell, the load is executed. Balanced processing.

Step 104, when the acquired LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell matches the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario, perform the execution on the serving cell and the admissible adjacent cell. Load balancing processing.

Wherein, when the real-time air interface load performance index meets the threshold value of the real-time air interface load performance index, load balancing processing is performed.

Referring to FIG. 5 , the first embodiment of the present invention is described below with a specific embodiment; wherein, the PRB utilization trigger threshold of the serving cell is 30%, the PRB utilization threshold of admissible neighboring cells is 85%, and the serving cell is equal to The relative threshold of the PRB utilization rate of the admissible adjacent cell is 5%, and the threshold of the number of UEs in the serving cell is 3, then when the PRB utilization rate of the serving cell is above 30%, the PRB utilization rate of the admissible adjacent cell is below 85%. When the relative threshold is 5% and the threshold for the number of UEs in the serving cell is 3, load balancing can be performed. However, the existing load balancing algorithm is triggered by the absolute load threshold. If the load PRB utilization rate of the serving cell reaches 85%, the load balancing triggering condition, and the admission peak value of the PRB utilization rate of the adjoining cell is 85%, then only the serving cell will be used in the serving cell. Load balancing is performed when the PRB utilization rate of the serving cell reaches 70%. If the PRB utilization rate of the serving cell is 65%, load balancing will not be performed if the PRB utilization rate of the admissible neighboring cell is lower than 35%. However, in this case, if the serving cell performs load balancing Balance will balance the network and improve the user experience.

In the above-mentioned embodiment of the present invention, the load balancing is triggered by configuring the serving cell and the relative load threshold of the acceptable adjacent cell, which effectively solves the limitation of the existing load balancing algorithm to trigger through the absolute load threshold, and improves the performance of the load balancing algorithm. Covering scenarios and performing all-round load balancing; the present invention maximizes the utilization of network resources by expanding the bandwidth of network equipment and servers.

In the above-mentioned embodiment of the present invention, after step 104, the method further includes:

Monitor whether the load of the serving cell has been balanced:

If balanced, disable load balancing with admissible neighbors.

Wherein, when it is detected that the serving cell no longer needs load balancing, the load balancing between the serving cell and the admissible neighboring cells is turned off, so as to reduce the capacity loss caused by the corresponding network overhead and improve the UTRAN user experience.

Second Embodiment

Referring to FIG. 2, a second embodiment of the present invention provides a method for triggering load balancing based on an LTE relative load difference, including:

Step 201: Acquire a current network load scenario, and acquire LTE real-time air interface load performance indicators of a serving cell and an acceptable neighbor cell under the current network load scenario.

Step 202: Configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value.

Step 203, according to the obtained LTE real-time air interface load performance indicators of the serving cell and the admissible adjacent cells, and the configured LTE real-time air interface load performance index threshold value corresponding to the current network load scenario, determine whether it is necessary to adjust the serving cell and the admissible adjacent cells. Neighbors perform load balancing processing.

Step 204, when the obtained LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell matches the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario, perform the execution on the serving cell and the admissible adjacent cell. Load balancing processing.

Step 205, if the coverage type of the serving cell is indoor distribution, the same coverage determination is performed on the serving cell and all admissible neighboring cells to obtain the same coverage cell of the serving cell.

Among them, indoor distribution is a successful solution for indoor user groups in the LTE system to improve the mobile communication environment in buildings. Indoor distribution uses the indoor antenna distribution system to evenly distribute the signals of the mobile base stations in every corner of the room, thereby Ensure that the indoor area has ideal signal coverage. Among them, the same coverage cell needs to include the serving cell in the coverage area, and the radiation range of the same coverage cell and the serving cell has an overlapping area.

Step 206, selecting a cell with the same coverage as an accepting cell, wherein the accepting cell is used to accept the offload from the serving cell.

Step 207: Enable blind handover with the accepting cell, and trigger load balancing with the accepting cell.

The blind handover refers to handover performed without measurement information, and does not measure the receiving cell, and starts the handover process as long as the level or quality of the serving cell drops to a threshold value. Blind handover is usually used for inter-frequency or inter-system handover to save measurement time or avoid the negative effects of compressed mode. Generally, blind handover can be configured in different frequency and same coverage cells. Blind handover is generally hard handover, that is, the old connection is first interrupted before the new connection is established.

In the above-mentioned embodiment of the present invention, in step 205, the same coverage determination is performed on the serving cell and all admissible neighboring cells, including:

Sweep the serving cell and all admissible neighboring cells and obtain sweep data;

If, in the frequency sweep data, the ratio of the number of sampling points to the total number of sampling points from the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value to the total number of sampling points is greater than the second preset value. If the value is set, the measurement report data of the admissible neighbor cell and the serving cell are obtained;

Wherein, if the frequency sweep data satisfies the above conditions, it can be determined that the admissible adjacent cell satisfies the same coverage requirement in coverage. Take Table 1 as an example:

Table 1

Wherein, if a sampling point of an acceptable adjacent area satisfies the level difference value of the sampling point: RSRP_s-RSRP_n>K1, K1 is the first preset value;

And if the ratio of the number of sampling points greater than K1 to the total number of sampling points is >K2, and K2 is the second preset value, then the admissible adjacent area satisfies the same coverage requirement in coverage.

If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the third preset value is greater than the fourth preset value, and the measurement report data contains The total number of sampling points is greater than the fifth preset value, then the admissible neighbor cell is the same coverage cell of the serving cell.

Wherein, if the measurement report data satisfies the above conditions, it can be determined that the admissible neighboring cell satisfies the same coverage requirement in terms of user behavior distribution. Take Table 2 as an example:

Table 2

Among them, if a sampling point of an acceptable adjacent area satisfies the level difference of the sampling point: RSRP_s-RSRP_n>K3, K3 is the third preset value;

And the ratio of the number of sampling points greater than K3 to the total number of sampling points>K4, K4 is the fourth preset value,

And the total number of sampling points in the measurement report>K5, K5 is the fifth preset value (that is, the number of sampling points must be greater than the fifth preset value to have reference significance, otherwise it is considered that the user behavior base in this cell is small, and the user behavior model distortion), then the admissible adjacent cell satisfies the same coverage requirement in terms of user distribution.

In the above embodiment of the present invention, after step 207, the method further includes:

The personality offset between the serving cell and the receiving cell is set as a first preset value.

Among them, a personality offset is set to prevent switching back and forth between two cells with the same coverage.

In the above-mentioned embodiments of the present invention, the load balancing is triggered by configuring the serving cell and the relative load threshold of the acceptable adjacent cells, which effectively solves the limitation of the existing load balancing algorithm to trigger through the absolute load threshold; The handover performs load balancing, intelligently determines the same coverage cell through frequency sweep and measurement report analysis, and sets a personality offset to prevent switching back and forth between two cells with the same coverage; the invention improves the coverage scenario of the load balancing algorithm, and performs all-round The present invention maximizes the utilization of network resources by expanding the bandwidth of network equipment and servers.

Third Embodiment

Referring to FIG. 3 , a third embodiment of the present invention provides a method for triggering load balancing based on an LTE relative load difference, including:

Step 301: Acquire a current network load scenario, and acquire LTE real-time air interface load performance indicators of a serving cell and an acceptable neighbor cell under the current network load scenario.

Step 302: Configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value.

Step 303, according to the acquired LTE real-time air interface load performance indicators of the serving cell and the admissible adjacent cells, and the configured LTE real-time air interface load performance index threshold value corresponding to the current network load scenario, determine whether the serving cell and the admissible adjacent cells need to be adjusted. Neighbors perform load balancing processing.

Step 304, when the obtained LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell matches the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario, perform the execution on the serving cell and the admissible adjacent cell. Load balancing processing.

Step 305, if the coverage type of the serving cell is a macro cell, perform the same coverage determination on the serving cell and all admissible neighboring cells, and determine whether there is a same coverage cell of the serving cell.

Among them, the macro station is the macro cell base station, and the coverage radius of the cell is relatively large, generally about 1-2.5 kilometers, and some even reach more than 20 kilometers.

Among them, the same coverage cell needs to include the serving cell in the coverage area, and the radiation range of the same coverage cell and the serving cell has an overlapping area.

Step 306, if it exists, select the same coverage cell as the receiving cell.

Wherein, if there is a cell with the same coverage, the cell with the same coverage is preferentially selected as the receiving cell.

Step 307: Enable blind handover with the accepting cell, and trigger load balancing with the accepting cell.

Step 308, if it does not exist, enable the handover with the admissible neighbor cell based on the measurement event, and trigger the load balancing with the admissible neighbor cell.

The measurement event-based handover needs to be configured synchronously to enable the measurement event.

In the above-mentioned embodiment of the present invention, in step 305, the same coverage determination is performed on the serving cell and all admissible neighboring cells, including:

Sweep the serving cell and all admissible neighboring cells and obtain sweep data;

If, in the frequency sweep data, the ratio of the number of sampling points to the total number of sampling points from the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value to the total number of sampling points is greater than the second preset value. If the value is set, the measurement report data of the admissible neighbor cell and the serving cell are obtained;

Wherein, if the measurement report data satisfies the above conditions, it can be determined that the admissible neighboring cell satisfies the same coverage requirement in terms of user behavior distribution.

If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the third preset value is greater than the fourth preset value, and the measurement report data contains The total number of sampling points is greater than the fifth preset value, then the admissible neighbor cell is the same coverage cell of the serving cell.

Wherein, if the measurement report data satisfies the above conditions, it can be determined that the admissible neighboring cell satisfies the same coverage requirement in terms of user behavior distribution.

In the above embodiment of the present invention, after step 307, the method further includes:

The personality offset between the serving cell and the receiving cell is set as a first preset value.

Among them, a personality offset is set to prevent switching back and forth between two cells with the same coverage.

In the above-mentioned embodiment of the present invention, the load balancing is triggered by configuring the serving cell and the relative load threshold of the acceptable adjacent cells, which effectively solves the limitation of the existing load balancing algorithm to trigger through the absolute load threshold; Frequency sweeping and measurement report analysis intelligently determine the same coverage cell, and perform load balancing according to whether there is a same coverage cell by blind handover or handover based on measurement events; the present invention improves the coverage scenario of the load balancing algorithm and performs all-round load balancing; The present invention maximizes the utilization of network resources by expanding the bandwidth of network equipment and servers.

Fourth Embodiment

Referring to FIG. 4 , a fourth embodiment of the present invention provides an apparatus for triggering load balancing based on an LTE relative load difference, including:

The obtaining module 401 is configured to obtain the current network load scenario, and obtain the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cell under the current network load scenario;

The configuration module 402 is configured to configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value;

The judging module 403 is configured to judge whether the serving cell needs to be adjusted according to the acquired LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell, and the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario. Perform load balancing processing with admissible neighbors;

Execution module 404 is configured to, when the acquired LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell matches the LTE real-time air interface load performance index threshold value corresponding to the configured current network load scenario, compare the serving cell and the admissible adjacent cell with the LTE real-time air interface load performance index threshold. Neighbors perform load balancing processing.

In the above-mentioned embodiment of the present invention, the load balancing is triggered by configuring the serving cell and the relative load threshold of the acceptable adjacent cell, which effectively solves the limitation of the existing load balancing algorithm to trigger through the absolute load threshold, and improves the performance of the load balancing algorithm. Covering scenarios and performing all-round load balancing; the present invention maximizes the utilization of network resources by expanding the bandwidth of network equipment and servers.

Preferably, the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cells at least include:

The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in the active state, and the PRB utilization rate of the adjacent cells that can be accommodated.

Preferably, the configuration module 402 is specifically used for:

According to the preset network load scenario model, the PRB utilization rate trigger threshold of the serving cell, the admission threshold of PRB utilization rate of the admissible neighbor cell, the relative threshold of PRB utilization rate between the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the admission threshold of the PRB utilization of the admissible neighboring cells, the relative threshold of the PRB utilization of the serving cell and the admissible neighboring cells, and the number of UEs in the serving cell. number threshold.

Preferably, the execution module 404 includes:

The first execution sub-module is used for, if the coverage type of the serving cell is indoor distribution, perform the same coverage determination on the serving cell and all admissible neighboring cells, and obtain the same coverage cell of the serving cell;

Select the same coverage cell as the receiving cell;

Enable the blind handover between the accepting cell and trigger the load balancing between the accepting cell.

Preferably, the execution module 404 includes:

The second execution sub-module is used to perform the same coverage judgment on the serving cell and all admissible neighboring cells if the coverage type of the serving cell is a macro cell, and determine whether there is a same coverage cell of the serving cell:

If it exists, select the same coverage cell as the receiving cell;

Enable blind handover between the accepting cell and trigger the load balancing between the accepting cell;

If it does not exist, the measurement event-based handover with the admissible neighbor cell is enabled to trigger load balancing with the admissible neighbor cell.

Preferably, the second execution module 404 includes a co-coverage determination sub-module for performing co-coverage determination on the serving cell and all admissible neighboring cells, specifically for:

Sweep the serving cell and all admissible neighboring cells and obtain sweep data;

If, in the frequency sweep data, the ratio of the number of sampling points to the total number of sampling points from the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value to the total number of sampling points is greater than the second preset value. If the value is set, the measurement report data of the admissible neighbor cell and the serving cell are obtained;

If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the third preset value is greater than the fourth preset value, and the measurement report data contains The total number of sampling points is greater than the fifth preset value, then the admissible neighbor cell is the same coverage cell of the serving cell.

Preferably, the device further includes:

The setting module is used for enabling blind handover with the accepting cell, and after triggering the load balancing between the accepting cell and the serving cell, setting the personality offset between the serving cell and the accepting cell to a first preset value.

Preferably, the device further includes:

The monitoring module is used for the execution module to perform load balancing processing on the serving cell and the admissible neighboring cells,

Monitor whether the load of the serving cell has been balanced:

If balanced, disable load balancing with admissible neighbors.

It should be noted that the device for triggering load balancing based on the LTE relative load difference provided by the embodiment of the present invention is a device applying the above method, that is, all embodiments of the above method are applicable to the device, and can achieve the same or similar beneficial effect.

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

Claims (8)

1. a method for triggering load balancing based on LTE relative load difference, is characterized in that, comprises: Obtaining the current network load scenario, and obtaining the LTE real-time air interface load performance indicators of the serving cell and the admissible neighbor cell under the current network load scenario; According to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance indicator threshold value, configure the LTE real-time air interface load performance indicator threshold value corresponding to the current network load scenario; According to the obtained LTE real-time air interface load performance indicators of the serving cell and acceptable adjacent cells, and the configured LTE real-time air interface load performance index threshold value corresponding to the current network load scenario, it is determined whether the serving cell needs to be Perform load balancing processing with admissible neighbors; When the acquired LTE real-time air interface load performance index of the serving cell and the admissible neighbor cell matches the configured LTE real-time air interface load performance index threshold corresponding to the current network load Neighbors perform load balancing processing; The LTE real-time air interface load performance indicators of the serving cell and the admissible neighboring cell at least include: The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in an active state, and the PRB utilization rate of the admissible neighbor cell; The configuration of the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value specifically includes: According to the preset network load scenario model, the PRB utilization rate trigger threshold of the serving cell, the admission threshold of PRB utilization rate of the admissible neighbor cell, the relative threshold of PRB utilization rate between the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the PRB utilization acceptance threshold of the admissible neighbor cell, and the PRB utilization rate of the serving cell and admissible neighbor cells. a relative threshold and a threshold of the number of UEs of the serving cell; The performing load balancing processing on the serving cell and the admissible neighbor cell includes: If the coverage type of the serving cell is indoor distribution, the same coverage determination is performed on the serving cell and all the admissible adjacent cells to obtain the same coverage cell of the serving cell; selecting the same-coverage cell as an accepting cell; enabling blind handover with the accepting cell, and triggering load balancing with the accepting cell; After the blind handover between the enabling and the admitting cell is triggered and load balancing with the admitting cell is triggered, the method further includes: A personality offset between the serving cell and the receiving cell is set as a first preset value. 2. The method according to claim 1, wherein the performing load balancing processing on the serving cell and the admissible neighbor cell comprises: If the coverage type of the serving cell is a macro station, the same coverage determination is performed on the serving cell and all the admissible adjacent cells to determine whether there is a same coverage cell of the serving cell: If it exists, selecting the same-coverage cell as the receiving cell; enabling blind handover with the accepting cell, and triggering load balancing with the accepting cell; If it does not exist, the measurement event-based handover with the admissible neighbor cell is enabled to trigger load balancing with the admissible neighbor cell. 3. The method according to claim 1 or 2, wherein the performing the same coverage determination on the serving cell and all the admissible adjacent cells comprises: Sweeping the serving cell and all the admissible neighboring cells and acquiring sweeping data; If in the frequency sweep data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value accounts for the total number of sampling points If the ratio is greater than the second preset value, obtain the measurement report data of the admissible neighbor cell and the serving cell; If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighbor cell is greater than the third preset value is greater than the fourth preset value, and If the total number of sampling points in the measurement report data is greater than the fifth preset value, the admissible neighbor cell is the same coverage cell of the serving cell. 4. The method according to claim 1, wherein after the load balancing process is performed on the serving cell and the admissible neighbor cell, the method further comprises: Monitor whether the load of the serving cell has been balanced: If it is balanced, the load balancing with the admissible neighbors is turned off. 5. A device for triggering load balancing based on LTE relative load difference, comprising: an obtaining module, configured to obtain the current network load scenario, and obtain the LTE real-time air interface load performance indicators of the serving cell and the acceptable neighbor cell under the current network load scenario; a configuration module, configured to configure the LTE real-time air interface load performance index threshold value corresponding to the current network load scenario according to the corresponding relationship between the preset network load scenario model and the LTE real-time air interface load performance index threshold value; The judgment module is used for judging whether the real-time air interface load performance index of LTE corresponding to the current network load scenario is configured according to the obtained LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell, and whether it is necessary performing load balancing processing on the serving cell and admissible neighbor cells; The execution module is configured to, when the acquired LTE real-time air interface load performance index of the serving cell and the admissible adjacent cell matches the configured LTE real-time air interface load performance index threshold value corresponding to the current network load The serving cell and the admissible neighbor cells perform load balancing processing; The LTE real-time air interface load performance indicators of the serving cell and the admissible neighboring cell at least include: The PRB utilization rate of the physical resource block of the serving cell, the average number of user equipment UEs in an active state, and the PRB utilization rate of the admissible neighbor cell; The configuration module is specifically used for: According to the preset network load scenario model, the PRB utilization trigger threshold of the serving cell, the admission threshold of the PRB utilization rate of the admissible neighbor cell, the relative threshold of the PRB utilization rate of the serving cell and the admissible neighbor cell, and the number of UEs in the serving cell The number of thresholds, configure the PRB utilization trigger threshold of the serving cell corresponding to the current network load scenario, the PRB utilization acceptance threshold of the admissible neighbor cell, and the PRB utilization rate of the serving cell and admissible neighbor cells. a relative threshold and a threshold of the number of UEs of the serving cell; The execution module includes: a first execution sub-module, configured to perform a co-coverage determination on the serving cell and all the admissible neighboring cells to obtain a co-coverage cell of the serving cell if the coverage type of the serving cell is indoor distribution; selecting the same-coverage cell as an accepting cell; enabling blind handover with the accepting cell, and triggering load balancing with the accepting cell; A setting module is configured to enable blind handover with the admitting cell, and after triggering load balancing with the admitting cell, set the personality offset between the serving cell and the admitting cell as the first preset set value. 6. The apparatus according to claim 5, wherein the execution module comprises: The second execution sub-module is configured to, if the coverage type of the serving cell is a macro station, perform the same-coverage determination on the serving cell and all the admissible neighboring cells, and determine whether there is a same-coverage cell of the serving cell : If it exists, selecting the same-coverage cell as the receiving cell; enabling blind handover with the accepting cell, and triggering load balancing with the accepting cell; If it does not exist, the measurement event-based handover with the admissible neighbor cell is enabled to trigger load balancing with the admissible neighbor cell. 7. The apparatus according to claim 5 or 6, wherein the execution module comprises a co-coverage determination sub-module for performing co-coverage determination on the serving cell and all the admissible adjacent cells. At: Sweeping the serving cell and all the admissible neighboring cells and acquiring sweeping data; If in the frequency sweep data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighboring cell is greater than the first preset value accounts for the total number of sampling points If the ratio is greater than the second preset value, obtain the measurement report data of the admissible neighbor cell and the serving cell; If in the measurement report data, the number of sampling points that satisfy the sampling point level of the serving cell minus the sampling point level of the admissible neighbor cell is greater than the third preset value is greater than the fourth preset value, and If the total number of sampling points in the measurement report data is greater than the fifth preset value, the admissible neighbor cell is the same coverage cell of the serving cell. 8. The apparatus according to claim 5, wherein the apparatus further comprises: a monitoring module, used for the execution module to perform load balancing processing on the serving cell and the admissible neighbor cells, Monitor whether the load of the serving cell has been balanced: If it is balanced, the load balancing with the admissible neighbors is turned off.

Images