CN106912071B - Method and device for triggering load balancing based on L TE relative load difference - Google Patents
Method and device for triggering load balancing based on L TE relative load difference Download PDFInfo
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- CN106912071B CN106912071B CN201510980940.6A CN201510980940A CN106912071B CN 106912071 B CN106912071 B CN 106912071B CN 201510980940 A CN201510980940 A CN 201510980940A CN 106912071 B CN106912071 B CN 106912071B
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Abstract
The invention provides a method and a device for triggering load balancing based on L TE relative load difference, the method comprises the steps of obtaining a current network load scene, obtaining L TE real-time air interface load performance indexes of a service cell and an acceptable adjacent cell under the current network load scene, configuring a L TE real-time air interface load performance index threshold value corresponding to the current network load scene, judging whether load balancing processing needs to be executed on the service cell and the acceptable adjacent cell according to the obtained L TE real-time air interface load performance indexes of the service cell and the acceptable adjacent cell and the configured L TE real-time air interface load performance index threshold value corresponding to the current network load scene, and executing load balancing processing on the service cell and the acceptable adjacent cell when the obtained L TE real-time air interface load performance indexes of the service cell and the acceptable adjacent cell are matched with a configured L TE real-time air interface load performance index threshold value corresponding to the current network load scene.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to a method and a device for triggering load balancing based on L TE relative load difference.
Background
With the gradual increase of the number of long term evolution (L TE) users of the universal mobile telecommunications technology, resources in a hot spot area gradually begin to be unable to meet the requirements of the users, the load between cells and frequencies is unbalanced, and the importance of a load balancing algorithm is gradually highlighted.
The load balancing algorithm reasonably deploys the cell operation flow according to the load states of the service cell and the receivable adjacent cells thereof, and effectively uses system resources so as to improve the capacity and stability of the system.
The algorithm is generally divided into a measurement phase, a decision phase and an execution phase. In the measurement stage, the load state of a service cell and the load state of an acceptable adjacent cell are regularly and continuously monitored and updated; the judging stage judges whether the service cell is in a high load state according to the measurement information collected in the measuring stage: if the serving cell is in a high load state, load balancing will be triggered in the execution phase.
The load determination conditions of the existing load balancing algorithm are generally divided into air interface load, evolved node b (eNodeB) hardware load and transmission load. The air interface load is mainly based on the utilization rate of a material resource block (PRB) of a cell, the evaluation value of the PRB and the number of users; the eNodeB hardware load is based on the use condition of hardware resources such as a Central Processing Unit (CPU) and a Digital Signal Processor (DSP) of a system evaluation; the transmission load is measured based on the usage of the system's estimated bandwidth. At present, the air interface load is the most dominant load judgment condition.
However, the existing load balancing algorithms generally have the following disadvantages:
the load balancing algorithm is triggered by judging whether a set load threshold is met or not, and whether the receiving of the adjacent cell is allowed or not is judged based on similar setting; both are based on the conventional absolute high-low load determination, and there is no relative threshold trigger based mechanism for the intermediate zones between high and low loads. For example, if the load PRB utilization of a serving cell reaches 70% is a load balancing trigger condition, and the admission peak of the admitted neighbor PRB utilization is 65%, then offloading will be performed if the load PRB utilization of the serving cell reaches 70%, and no admission will be performed after the neighbor admitted user reaches 65%. However, when the PRB utilization rate of a serving cell is 65%, the acceptable neighbor PRB utilization rate is lower than 35%, in this case, if the serving cell performs load splitting, the network will be balanced and the user perception will be improved, but load balancing will not be triggered under the existing algorithm.
Load balancing algorithms are divided into blind handover-based and measurement event-based algorithms, and generally, only one of the blind handover-based and measurement event-based algorithms can be selected. The cell default configuration is based on the equalization algorithm of blind handover, and the macro station is generally set to be based on measurement. However, from the consideration of balancing the best effect and saving network resources (based on the measurement event, resources are consumed more than blind handover), if the macro station has the same coverage cell, blind handover can be prioritized under the permission of CPU load, and the same coverage cell is balanced. And the same coverage in the blind switching equalization algorithm is manually set, no related algorithm is used for intelligent definition, the manual setting cannot be used for intelligent analysis of big data, and meanwhile, the influence of the skills of optimization personnel is obvious.
The load balancing algorithm is generally not automatically closed after being started, so that resources such as signaling and the like are consumed, the network load of an evolved Universal Terrestrial Radio Access Network (UTRAN) is increased, the user experience of the UTRAN is reduced, and the capacity loss is caused.
Disclosure of Invention
The invention provides a method and a device for triggering load balancing based on L TE relative load difference, and aims to solve the problems that the existing load balancing algorithm is triggered through an absolute load threshold, only one of the method and the device can be selected based on blind switching and measurement events, the same coverage is set for manual work, and the like.
In order to achieve the above object, an embodiment of the present invention provides a method for triggering load balancing based on L TE relative load difference, including:
acquiring a current network load scene, and acquiring L TE real-time air interface load performance indexes of a service cell and an acceptable adjacent cell under the current network load scene;
configuring a L TE real-time air interface load performance index threshold value corresponding to the current network load scene according to the corresponding relation between a preset network load scene model and an L TE real-time air interface load performance index threshold value;
judging whether load balancing processing needs to be executed on the service cell and the receivable adjacent cell or not according to the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell and a L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene;
and when the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene, performing load balancing processing on the service cell and the receivable adjacent cell.
Preferably, the L TE real-time air interface load performance indexes of the serving cell and the receivable neighboring cells at least include:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average user equipment UE in the activated state and the PRB utilization rate of the receivable adjacent cells.
Preferably, configuring a L TE real-time air interface load performance index threshold corresponding to the current network load scenario according to a preset corresponding relationship between the network load scenario model and the L TE real-time air interface load performance index threshold, specifically including:
according to a PRB utilization triggering threshold of a service cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell in a preset network load scene model, a PRB utilization triggering threshold of the service cell, a PRB utilization accepting threshold of the acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell corresponding to a current network load scene are configured.
Preferably, the load balancing process is performed on the serving cell and the receivable neighboring cells, and includes:
if the coverage type of the service cell is indoor distribution, performing same coverage judgment on the service cell and all receivable adjacent cells to obtain the same coverage cell of the service cell;
selecting a same-coverage cell as a receiving cell;
and opening blind switching between the cells and the receiving cells, and triggering load balancing between the cells and the receiving cells.
Preferably, the load balancing process is performed on the serving cell and the receivable neighboring cells, and includes:
if the coverage type of the service cell is the macro station, the same coverage judgment is carried out on the service cell and all the receivable adjacent cells, and whether the same coverage cell of the service cell exists or not is judged:
if yes, selecting the same coverage cell as an admission cell;
opening blind switching between cells and receiving cells, and triggering load balancing between the cells and the receiving cells;
if not, switching based on the measurement event between the adjacent cells which can be accepted is started, and load balancing between the adjacent cells which can be accepted is triggered.
Preferably, the performing the same coverage determination on the serving cell and all receivable neighboring cells includes:
sweeping frequency of a service cell and all receivable adjacent cells and acquiring sweep frequency data;
if the ratio of the number of sampling points which are obtained by subtracting the level of the sampling point of the receivable adjacent cell from the level of the sampling point of the receivable adjacent cell and are larger than the first preset value in the sweep frequency data to the total number of the sampling points is larger than a second preset value, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the number of the sampling points which satisfy the condition that the level of the sampling point of the service cell minus the level of the sampling point of the receivable adjacent cell is greater than the third preset value in the measurement report data is greater than the fourth preset value, and the total number of the sampling points in the measurement report data is greater than the fifth preset value, the receivable adjacent cell is the same coverage cell of the service cell.
Preferably, after the blind handover between the receiving cell and the initiating cell is started and the load balancing between the receiving cell and the triggering cell is triggered, the method further comprises:
and setting the individual deviation between the serving cell and the receiving cell to be a first preset value.
Preferably, after performing the load balancing process on the serving cell and the receivable neighboring cells, the method further includes:
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the receivable adjacent areas.
In order to achieve the above object, an embodiment of the present invention further provides an apparatus for triggering load balancing based on L TE relative load difference, including:
the acquisition module is used for acquiring a current network load scene and L TE real-time air interface load performance indexes of a service cell and an acceptable adjacent cell in the current network load scene;
a configuration module, configured to configure a L TE real-time air interface load performance index threshold corresponding to a current network load scenario according to a preset correspondence between a network load scenario model and an L TE real-time air interface load performance index threshold;
the judging module is used for judging whether load balancing processing needs to be executed on the service cell and the receivable adjacent cell or not according to the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell and a L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene;
and the execution module is used for executing load balancing processing on the service cell and the receivable adjacent cell when the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene.
Preferably, the L TE real-time air interface load performance indexes of the serving cell and the receivable neighboring cells at least include:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average user equipment UE in the activated state and the PRB utilization rate of the receivable adjacent cells.
Preferably, the configuration module is specifically configured to:
according to a PRB utilization triggering threshold of a service cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell in a preset network load scene model, a PRB utilization triggering threshold of the service cell, a PRB utilization accepting threshold of the acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell corresponding to a current network load scene are configured.
Preferably, the execution module comprises:
the first execution submodule is used for judging the same coverage of the service cell and all the receivable adjacent cells to obtain the same coverage cell of the service cell if the coverage type of the service cell is indoor distribution;
selecting a same-coverage cell as a receiving cell;
and opening blind switching between the cells and the receiving cells, and triggering load balancing between the cells and the receiving cells.
Preferably, the execution module comprises:
a second execution submodule, configured to, if the coverage type of the serving cell is the macro station, perform same coverage determination on the serving cell and all receivable neighboring cells, and determine whether there is a same coverage cell of the serving cell:
if yes, selecting the same coverage cell as an admission cell;
opening blind switching between cells and receiving cells, and triggering load balancing between the cells and the receiving cells;
if not, switching based on the measurement event between the adjacent cells which can be accepted is started, and load balancing between the adjacent cells which can be accepted is triggered.
Preferably, the execution module includes a same coverage determination submodule, configured to perform same coverage determination on the serving cell and all receivable neighboring cells, and specifically configured to:
sweeping frequency of a service cell and all receivable adjacent cells and acquiring sweep frequency data;
if the ratio of the number of sampling points which are obtained by subtracting the level of the sampling point of the receivable adjacent cell from the level of the sampling point of the receivable adjacent cell and are larger than the first preset value in the sweep frequency data to the total number of the sampling points is larger than a second preset value, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the number of the sampling points which satisfy the condition that the level of the sampling point of the service cell minus the level of the sampling point of the receivable adjacent cell is greater than the third preset value in the measurement report data is greater than the fourth preset value, and the total number of the sampling points in the measurement report data is greater than the fifth preset value, the receivable adjacent cell is the same coverage cell of the service cell.
Preferably, the apparatus further comprises:
and the setting module is used for starting blind handover between the service cell and the receiving cell, and setting the individual deviation between the service cell and the receiving cell to be a first preset value after triggering load balance between the service cell and the receiving cell.
Preferably, the apparatus further comprises:
a monitoring module, which is used for executing load balancing processing to the service cell and the receivable adjacent cell by the execution module,
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the receivable adjacent areas.
The scheme of the invention at least comprises the following beneficial effects:
in the embodiment of the invention, the load balancing is triggered by configuring the service cell and the relative threshold of the load of the receivable adjacent cell, so that the limitation that the traditional load balancing algorithm is triggered by an absolute load threshold is effectively solved, the coverage scene of the load balancing algorithm is improved, and the omnibearing load balancing is carried out; the co-coverage cell is intelligently judged through frequency sweep and measurement report analysis, and the bandwidths of network equipment and a server are expanded, so that the maximization of network resource utilization is realized; and monitoring the network load in real time, and closing the load balance when the service cell does not need the load balance any more so as to reduce the capacity loss caused by corresponding network overhead and improve the user experience of the UTRAN.
Drawings
Fig. 1 is a flowchart illustrating basic steps of a method for triggering load balancing based on L TE relative load difference according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating basic steps of a method for triggering load balancing based on L TE relative load difference according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating basic steps of a method for triggering load balancing based on L TE relative load difference according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for triggering load balancing based on L TE relative load difference according to a fourth embodiment of the present invention;
fig. 5 is a schematic view of a first embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Aiming at the existing problems, the invention provides a method and a device for triggering load balancing based on L TE 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 L TE relative load difference, including:
Wherein, L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell at least comprise:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average user equipment UE in the activated state and the PRB utilization rate of the receivable adjacent cells.
One PRB includes 12 continuous subcarriers in the frequency domain and 7 continuous 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 the PRB utilization rate is as follows (the calculation formula of the uplink/downlink PRB utilization rate is the same, and the calculation formula of the downlink PRB utilization rate is taken as an example):
when the single-user guaranteed rate (Cell-DlNgbrTotalPBR) of the Cell downlink non-guaranteed rate service is less than the Cell downlink total throughput (Cell-dlngbrtotalthreught),
when the Cell-DlNgbrbTotalPBR is equal to or greater than the Cell-DlNgbrbTotalThroughoutput,
P＝(Cell-DlPrbUsedNgbr+Cell-DlPrbUsedGbr)/dwDlTotalAvailRB
wherein, P is the PRB utilization rate, Cell-DlPrbUsedNgbr is the number of PRBs occupied by the downlink non-guaranteed rate service, dwDlTotalAvailalRB is the total number of usable Radio Bearers (RBs) for the downlink, and Cell-DlPrbUsedGbr is the number of PRBs occupied by the downlink guaranteed rate service.
102, configuring a L TE real-time air interface load performance index threshold corresponding to the current network load scene according to a preset corresponding relationship between the network load scene model and the L TE real-time air interface load performance index threshold.
In different network load scene models, the air interface load performance is different, so L TE real-time air interface load performance index threshold values need to be configured according to the current network load scene.
In the above embodiment of the present invention, step 102 specifically includes:
according to a PRB utilization triggering threshold of a service cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell in a preset network load scene model, a PRB utilization triggering threshold of the service cell, a PRB utilization accepting threshold of the acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell corresponding to a current network load scene are configured.
The PRB utilization triggering threshold of the serving cell is the lowest value for triggering load balancing, the PRB utilization relative threshold of the serving cell and the receivable adjacent cell is the lowest value of the difference value of the PRB utilization of the serving cell and the receivable adjacent cell for triggering load balancing, and the PRB utilization receiving threshold of the receivable adjacent cell is the highest value of the receivable adjacent cell for receiving the shunt from the serving cell.
And 103, judging whether load balancing processing needs to be executed on the service cell and the receivable adjacent cell or not according to the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell and a L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene.
Whether load balancing processing needs to be executed is judged according to the acquired empty load performance index and the configured empty load performance index threshold value, namely, when the PRB utilization rate of the serving cell reaches the PRB utilization rate triggering threshold of the serving cell, the PRB utilization rate of the receivable adjacent cell does not reach the PRB utilization rate receiving threshold of the receivable adjacent cell, and the PRB utilization rate difference value of the serving cell and the receivable adjacent cell reaches the PRB utilization rate relative threshold of the serving cell and the receivable adjacent cell, the load balancing processing is executed.
And step 104, when the obtained L TE real-time air interface load performance indexes of the serving cell and the receivable adjacent cells are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene, performing load balancing processing on the serving cell and the receivable adjacent cells.
And when the real-time air interface load performance index meets the real-time air interface load performance index threshold value, executing load balancing processing.
Referring to fig. 5, a first embodiment of the present invention will be described as a specific embodiment; the PRB utilization triggering threshold of the serving cell is 30%, the PRB utilization accepting threshold of the receivable adjacent cell is 85%, the PRB utilization relative threshold of the serving cell and the receivable adjacent cell is 5%, and the UE number threshold of the serving cell is 3, so that when the PRB utilization of the serving cell is above 30%, the PRB utilization of the receivable adjacent cell is below 85%, the relative threshold is 5%, and the UE number threshold of the serving cell is 3, load balancing can be performed. The existing load balancing algorithm is triggered by an absolute load threshold, if the utilization rate of the load PRB of the serving cell reaches 85% as a load balancing triggering condition and the admission peak value of the utilization rate of the PRB of the admitted neighbor cell is 85%, the load balancing is only executed when the utilization rate of the PRB of the serving cell reaches 70%, and if the utilization rate of the PRB of the serving cell is 65%, the utilization rate of the PRB of the admitted neighbor cell is lower than 35%, the load balancing is not executed, however, if the load balancing is executed by the serving cell under the condition, the network is balanced, and the user experience is improved.
In the embodiment of the invention, the load balancing is triggered by configuring the service cell and the relative threshold of the load of the receivable adjacent cell, so that the limitation that the traditional load balancing algorithm is triggered by an absolute load threshold is effectively solved, the coverage scene of the load balancing algorithm is improved, and the omnibearing load balancing is carried out; the invention realizes the maximization of the utilization of network resources by expanding the bandwidth of the network equipment and the server.
In the above embodiment of the present invention, after step 104, the method further includes:
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the receivable adjacent areas.
When detecting that the serving cell does not need load balancing any more, the load balancing between the serving cell and the receivable neighboring cells is turned off to reduce capacity loss caused by corresponding network overhead and improve 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 L TE relative load difference, including:
And step 204, when the obtained L TE real-time air interface load performance indexes of the serving cell and the receivable adjacent cells are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene, performing load balancing processing on the serving cell and the receivable adjacent cells.
Indoor distribution is a successful solution for improving the mobile communication environment in a building for indoor user groups in the L TE system, and the indoor distribution uses an indoor antenna distribution system to uniformly distribute signals of mobile base stations at every indoor corner, so as to ensure that an indoor area has ideal signal coverage.
The blind handover refers to handover performed without measurement information, and a handover procedure is started as long as the level or quality of a serving cell is reduced to a threshold value without measuring a receiving cell. Blind handover is usually used for inter-frequency or inter-system handover to save measurement time or avoid the negative impact of compressed mode. Typically inter-frequency co-coverage cells can be configured with blind handovers, which are typically hard handovers, i.e. the old connection is first interrupted before the new connection is established.
In the above embodiment of the present invention, the performing the same coverage determination on the serving cell and all receivable neighboring cells in step 205 includes:
sweeping frequency of a service cell and all receivable adjacent cells and acquiring sweep frequency data;
if the ratio of the number of sampling points which are obtained by subtracting the level of the sampling point of the receivable adjacent cell from the level of the sampling point of the receivable adjacent cell and are larger than the first preset value in the sweep frequency data to the total number of the sampling points is larger than a second preset value, acquiring measurement report data of the receivable adjacent cell and the service cell;
and judging that the receivable adjacent areas meet the same coverage requirement in the coverage when the sweep frequency data meet the conditions. Taking table 1 as an example:
TABLE 1
Wherein, if a certain sampling point which can receive the adjacent cell meets the level difference of the sampling points: the RSRP _ s-RSRP _ n > K1, and the value of K1 is a first preset value;
and if the ratio of the number of the sampling points greater than K1 to the total number of the sampling points is greater than K2 and K2 is a second preset value, the receivable adjacent area can meet the requirement of the same coverage on the coverage.
And if the number of the sampling points which satisfy the condition that the level of the sampling point of the service cell minus the level of the sampling point of the receivable adjacent cell is greater than the third preset value in the measurement report data is greater than the fourth preset value, and the total number of the sampling points in the measurement report data is greater than the fifth preset value, the receivable adjacent cell is the same coverage cell of the service cell.
And if the measurement report data meets the conditions, the acceptable adjacent cell can be judged to meet the same coverage requirement on user behavior distribution. Taking table 2 as an example:
TABLE 2
Wherein, if a certain sampling point which can receive the adjacent cell meets the level difference of the sampling points: the RSRP _ s-RSRP _ n is greater than K3, and the K3 value is a third preset value;
and the ratio of the number of sampling points greater than K3 to the total number of sampling points is greater than K4, K4 is a fourth preset value,
and the number of the total sampling points in the measurement report is greater than K5, and K5 is a fifth preset value (namely the number of the sampling points must be greater than the fifth preset value to have reference meaning, otherwise, the behavior base number of the user in the cell is considered to be small, and the user behavior model is distorted), then the receivable adjacent cell meets the requirement of the same coverage on user distribution.
In the above embodiment of the present invention, after step 207, the method further includes:
and setting the individual deviation between the serving cell and the receiving cell to be a first preset value.
Wherein a personality offset is set to prevent handovers back and forth between two cells with coverage.
In the embodiment of the invention, the load balancing is triggered by configuring the service cell and the relative threshold of the load of the receivable adjacent cell, so that the limitation that the traditional load balancing algorithm triggers through the absolute load threshold is effectively solved; carrying out load balancing by adopting blind handover on an indoor distribution system, intelligently judging cells with the same coverage through frequency sweep and measurement report analysis, and setting individual offset to prevent the back-and-forth handover between the two cells with the same coverage; the invention improves the coverage scene of the load balancing algorithm and carries out omnibearing load balancing; the invention realizes the maximization of the utilization of network resources by expanding the bandwidth of the network equipment and the server.
Third embodiment
Referring to fig. 3, a third embodiment of the present invention provides a method for triggering load balancing based on L TE relative load difference, including:
And step 304, when the obtained L TE real-time air interface load performance indexes of the serving cell and the receivable adjacent cells are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene, performing load balancing processing on the serving cell and the receivable adjacent cells.
Wherein, the macro station, i.e. the macro cellular base station, has a large coverage radius of about 1-2.5 kilometers, and some even up to more than 20 kilometers,
the same coverage cell needs to include a serving cell in a coverage area, and there is an overlapping area between the radiation ranges of the same coverage cell and the serving cell.
And step 306, if the cell exists, selecting the same coverage cell as the admission cell.
And if the same coverage cell exists, preferentially selecting the same coverage cell as the admission cell.
And 308, if the current neighbor cell does not exist, switching between the current neighbor cell and the receivable neighbor cell based on the measurement event is started, and load balancing between the current neighbor cell and the receivable neighbor cell is triggered.
Wherein, starting the switching based on the measurement event requires synchronously configuring the measurement value event.
In the above embodiment of the present invention, the performing the same coverage determination on the serving cell and all receivable neighboring cells in step 305 includes:
sweeping frequency of a service cell and all receivable adjacent cells and acquiring sweep frequency data;
if the ratio of the number of sampling points which are obtained by subtracting the level of the sampling point of the receivable adjacent cell from the level of the sampling point of the receivable adjacent cell and are larger than the first preset value in the sweep frequency data to the total number of the sampling points is larger than a second preset value, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the measurement report data meets the conditions, the acceptable adjacent cell can be judged to meet the same coverage requirement on user behavior distribution.
And if the number of the sampling points which satisfy the condition that the level of the sampling point of the service cell minus the level of the sampling point of the receivable adjacent cell is greater than the third preset value in the measurement report data is greater than the fourth preset value, and the total number of the sampling points in the measurement report data is greater than the fifth preset value, the receivable adjacent cell is the same coverage cell of the service cell.
And if the measurement report data meets the conditions, the acceptable adjacent cell can be judged to meet the same coverage requirement on user behavior distribution.
In the above embodiment of the present invention, after step 307, the method further includes:
and setting the individual deviation between the serving cell and the receiving cell to be a first preset value.
Wherein a personality offset is set to prevent handovers back and forth between two cells with coverage.
In the embodiment of the invention, the load balancing is triggered by configuring the service cell and the relative threshold of the load of the receivable adjacent cell, so that the limitation that the traditional load balancing algorithm triggers through the absolute load threshold is effectively solved; intelligently judging the same-coverage cells by adopting frequency sweep and measurement report analysis for a macro station system, and executing load balancing by adopting blind handover or handover based on a measurement event according to the existence of the same-coverage cells; the invention improves the coverage scene of the load balancing algorithm and carries out omnibearing load balancing; the invention realizes the maximization of the utilization of network resources by expanding the bandwidth of the network equipment and the server.
Fourth embodiment
Referring to fig. 4, a fourth embodiment of the present invention provides an apparatus for triggering load balancing based on L TE relative load difference, including:
an obtaining module 401, configured to obtain a current network load scenario, and obtain L TE real-time empty load performance indexes of a serving cell and an acceptable neighboring cell in the current network load scenario;
a configuration module 402, configured to configure a L TE real-time air interface load performance index threshold corresponding to a current network load scenario according to a preset correspondence between a network load scenario model and an L TE real-time air interface load performance index threshold;
a determining module 403, configured to determine whether load balancing needs to be performed on the serving cell and the receivable neighboring cell according to the obtained L TE real-time air interface load performance index of the serving cell and the receivable neighboring cell and a L TE real-time air interface load performance index threshold corresponding to the configured current network load scenario;
an executing module 404, configured to execute load balancing processing on the serving cell and the receivable neighboring cell when the obtained L TE real-time air interface load performance index of the serving cell and the receivable neighboring cell matches the configured L TE real-time air interface load performance index threshold corresponding to the current network load scenario.
In the embodiment of the invention, the load balancing is triggered by configuring the service cell and the relative threshold of the load of the receivable adjacent cell, so that the limitation that the traditional load balancing algorithm is triggered by an absolute load threshold is effectively solved, the coverage scene of the load balancing algorithm is improved, and the omnibearing load balancing is carried out; the invention realizes the maximization of the utilization of network resources by expanding the bandwidth of the network equipment and the server.
Preferably, the L TE real-time air interface load performance indexes of the serving cell and the receivable neighboring cells at least include:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average user equipment UE in the activated state and the PRB utilization rate of the receivable adjacent cells.
Preferably, the configuration module 402 is specifically configured to:
according to a PRB utilization triggering threshold of a service cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell in a preset network load scene model, a PRB utilization triggering threshold of the service cell, a PRB utilization accepting threshold of the acceptable adjacent cell, a PRB utilization relative threshold of the service cell and the acceptable adjacent cell and a UE number threshold of the service cell corresponding to a current network load scene are configured.
Preferably, the execution module 404 includes:
the first execution submodule is used for judging the same coverage of the service cell and all the receivable adjacent cells to obtain the same coverage cell of the service cell if the coverage type of the service cell is indoor distribution;
selecting a same-coverage cell as a receiving cell;
and opening blind switching between the cells and the receiving cells, and triggering load balancing between the cells and the receiving cells.
Preferably, the execution module 404 includes:
a second execution submodule, configured to, if the coverage type of the serving cell is the macro station, perform same coverage determination on the serving cell and all receivable neighboring cells, and determine whether there is a same coverage cell of the serving cell:
if yes, selecting the same coverage cell as an admission cell;
opening blind switching between cells and receiving cells, and triggering load balancing between the cells and the receiving cells;
if not, switching based on the measurement event between the adjacent cells which can be accepted is started, and load balancing between the adjacent cells which can be accepted is triggered.
Preferably, the second performing module 404 includes a co-coverage determining sub-module, configured to perform co-coverage determination on the serving cell and all receivable neighboring cells, specifically to:
sweeping frequency of a service cell and all receivable adjacent cells and acquiring sweep frequency data;
if the ratio of the number of sampling points which are obtained by subtracting the level of the sampling point of the receivable adjacent cell from the level of the sampling point of the receivable adjacent cell and are larger than the first preset value in the sweep frequency data to the total number of the sampling points is larger than a second preset value, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the number of the sampling points which satisfy the condition that the level of the sampling point of the service cell minus the level of the sampling point of the receivable adjacent cell is greater than the third preset value in the measurement report data is greater than the fourth preset value, and the total number of the sampling points in the measurement report data is greater than the fifth preset value, the receivable adjacent cell is the same coverage cell of the service cell.
Preferably, the apparatus further comprises:
and the setting module is used for starting blind handover between the service cell and the receiving cell, and setting the individual deviation between the service cell and the receiving cell to be a first preset value after triggering load balance between the service cell and the receiving cell.
Preferably, the apparatus further comprises:
a monitoring module, which is used for executing load balancing processing to the service cell and the receivable adjacent cell by the execution module,
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the receivable adjacent areas.
It should be noted that the device for triggering load balancing based on L TE relative load difference according to the embodiment of the present invention is a device that applies the above method, that is, all embodiments of the above method are applicable to the device, and can achieve the same or similar beneficial effects.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (8)
1. A method for triggering load balancing based on L TE relative load difference is characterized by comprising the following steps:
acquiring a current network load scene, and acquiring L TE real-time air interface load performance indexes of a service cell and an acceptable adjacent cell under the current network load scene;
configuring a L TE real-time air interface load performance index threshold value corresponding to the current network load scene according to a preset corresponding relation between a network load scene model and an L TE real-time air interface load performance index threshold value;
judging whether load balancing processing needs to be executed on the service cell and the receivable adjacent cell or not according to the obtained L TE real-time air interface load performance indexes of the service cell and the receivable adjacent cell and a configured L TE real-time air interface load performance index threshold value corresponding to the current network load scene;
when the L TE real-time air interface load performance indexes of the obtained service cell and the receivable adjacent cells are matched with the L TE real-time air interface load performance index threshold value corresponding to the configured current network load scene, performing load balancing processing on the service cell and the receivable adjacent cells;
the L TE real-time air interface load performance indexes of the serving cell and the receivable neighboring cells at least include:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average User Equipment (UE) in an activated state and the PRB utilization rate of the receivable adjacent cells;
the configuring, according to a preset correspondence between a network load scene model and an L TE real-time air interface load performance index threshold, a L TE real-time air interface load performance index threshold corresponding to the current network load scene specifically includes:
configuring a PRB utilization triggering threshold of a serving cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the serving cell and the acceptable adjacent cell and a UE number threshold of the serving cell corresponding to the current network load scene according to a PRB utilization triggering threshold of the serving cell, the PRB utilization accepting threshold of the acceptable adjacent cell, the PRB utilization relative thresholds of the serving cell and the acceptable adjacent cell and the UE number threshold of the serving cell in a preset network load scene model;
the performing load balancing processing on the serving cell and the receivable neighboring cells includes:
if the coverage type of the service cell is indoor distribution, performing same coverage judgment on the service cell and all the receivable adjacent cells to obtain the same coverage cell of the service cell;
selecting the co-coverage cell as an admission cell;
opening blind switching between the receiving cell and the receiving cell, and triggering load balancing between the receiving cell and the receiving cell;
after the opening of the blind handover with the receiving cell and the triggering of the load balancing with the receiving cell, the method further comprises:
and setting the individual deviation between the serving cell and the receiving cell to be a first preset value.
2. The method of claim 1, wherein the performing load balancing processing on the serving cell and the receivable neighboring cells comprises:
if the coverage type of the service cell is the macro station, performing same coverage judgment on the service cell and all the receivable adjacent cells, and judging whether the same coverage cell of the service cell exists or not:
if yes, selecting the same coverage cell as an admission cell;
opening blind switching between the receiving cell and the receiving cell, and triggering load balancing between the receiving cell and the receiving cell;
if not, switching based on the measurement event between the adjacent cells which can be received is started, and load balancing between the adjacent cells which can be received is triggered.
3. The method of claim 1 or 2, wherein said making the co-coverage decision for the serving cell and all the receivable neighboring cells comprises:
performing frequency sweeping on the service cell and all the receivable adjacent cells and acquiring frequency sweeping data;
if the ratio of the number of sampling points, in the sweep frequency data, of which the sampling point level of the receivable adjacent cell is less than the first preset value to the total number of sampling points is greater than a second preset value is met, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the number of sampling points in the measurement report data, which is obtained by subtracting the sampling point level of the receivable adjacent cell from the sampling point level of the service cell and is larger than a third preset value, is larger than a fourth preset value, and the total number of sampling points in the measurement report data is larger than a fifth preset value, the receivable adjacent cell is the same-coverage cell of the service cell.
4. The method of claim 1, wherein after the performing load balancing processing on the serving cell and the receivable neighboring cells, the method further comprises:
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the adjacent cells which can be received.
5. An apparatus for triggering load balancing based on L TE relative load difference, comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring a current network load scene and L TE real-time air interface load performance indexes of a service cell and an acceptable adjacent cell under the current network load scene;
a configuration module, configured to configure a L TE real-time air interface load performance index threshold corresponding to the current network load scenario according to a preset correspondence between a network load scenario model and an L TE real-time air interface load performance index threshold;
a determining module, configured to determine whether load balancing processing needs to be performed on the serving cell and the receivable neighboring cell according to the obtained L TE real-time air interface load performance indicators of the serving cell and the receivable neighboring cell and a configured L TE real-time air interface load performance indicator threshold corresponding to the current network load scenario;
an execution module, configured to execute load balancing processing on the serving cell and the receivable neighboring cell when the obtained L TE real-time air interface load performance index of the serving cell and the receivable neighboring cell matches the configured L TE real-time air interface load performance index threshold corresponding to the current network load scenario;
the L TE real-time air interface load performance indexes of the serving cell and the receivable neighboring cells at least include:
the PRB utilization rate of the physical resource block of the serving cell, the number of the average User Equipment (UE) in an activated state and the PRB utilization rate of the receivable adjacent cells;
the configuration module is specifically configured to:
configuring a PRB utilization triggering threshold of a serving cell, a PRB utilization accepting threshold of an acceptable adjacent cell, a PRB utilization relative threshold of the serving cell and the acceptable adjacent cell and a UE number threshold of the serving cell corresponding to the current network load scene according to a PRB utilization triggering threshold of the serving cell, the PRB utilization accepting threshold of the acceptable adjacent cell, the PRB utilization relative thresholds of the serving cell and the acceptable adjacent cell and the UE number threshold of the serving cell in a preset network load scene model;
the execution module comprises:
a first execution submodule, configured to perform same coverage determination on the serving cell and all the receivable neighboring cells if the coverage type of the serving cell is indoor distribution, so as to obtain a same coverage cell of the serving cell;
selecting the co-coverage cell as an admission cell;
opening blind switching between the receiving cell and the receiving cell, and triggering load balancing between the receiving cell and the receiving cell;
and the setting module is used for starting blind handover between the service cell and the receiving cell, and setting the individual offset between the service cell and the receiving cell to be a first preset value after triggering load balance between the service cell and the receiving cell.
6. The apparatus of claim 5, wherein the execution module comprises:
a second execution sub-module, configured to, if the coverage type of the serving cell is a macro station, perform same coverage determination on the serving cell and all the receivable neighboring cells, and determine whether there is a same coverage cell of the serving cell:
if yes, selecting the same coverage cell as an admission cell;
opening blind switching between the receiving cell and the receiving cell, and triggering load balancing between the receiving cell and the receiving cell;
if not, switching based on the measurement event between the adjacent cells which can be received is started, and load balancing between the adjacent cells which can be received is triggered.
7. The apparatus according to claim 5 or 6, wherein the performing module comprises a co-coverage determining sub-module, configured to perform a co-coverage determination on the serving cell and all the receivable neighboring cells, specifically to:
performing frequency sweeping on the service cell and all the receivable adjacent cells and acquiring frequency sweeping data;
if the ratio of the number of sampling points, in the sweep frequency data, of which the sampling point level of the receivable adjacent cell is less than the first preset value to the total number of sampling points is greater than a second preset value is met, acquiring measurement report data of the receivable adjacent cell and the service cell;
and if the number of sampling points in the measurement report data, which is obtained by subtracting the sampling point level of the receivable adjacent cell from the sampling point level of the service cell and is larger than a third preset value, is larger than a fourth preset value, and the total number of sampling points in the measurement report data is larger than a fifth preset value, the receivable adjacent cell is the same-coverage cell of the service cell.
8. The apparatus of claim 5, further comprising:
a monitoring module, configured to, after the performing module performs load balancing processing on the serving cell and the receivable neighboring cells,
monitoring whether the load of the serving cell has been balanced:
and if so, closing the load balance between the adjacent cells which can be received.
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| CN111385128B (en) * | 2018-12-29 | 2023-04-07 | 中兴通讯股份有限公司 | Method and device for predicting burst load, storage medium, and electronic device |
| CN112770339B (en) * | 2019-11-06 | 2022-09-13 | 大唐移动通信设备有限公司 | Cooperative cell determination method and device |
| CN111093229B (en) * | 2019-12-25 | 2022-09-13 | 中国移动通信集团内蒙古有限公司 | Method, device, equipment and medium for determining load balancing parameters |
| CN113747455A (en) * | 2020-05-27 | 2021-12-03 | 中国联合网络通信集团有限公司 | Network optimization method and device |
| CN113938954B (en) * | 2021-10-12 | 2023-06-30 | 中国联合网络通信集团有限公司 | Load balancing optimization method, device and storage medium |
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