CN110784893B - Multi-carrier load balancing method, device, core network equipment and storage medium - Google Patents
Multi-carrier load balancing method, device, core network equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for multi-carrier load balancing, core network equipment and a storage medium. The method is applied to core network equipment, the core network equipment is communicated with two different base stations in the same sector, the sector comprises a same-coverage pilot frequency cell pair, and the method comprises the following steps: determining a first initial threshold value and a second initial threshold value corresponding to each base station and judging whether the load of the sector is balanced according to the load data of each cell; if the sector load is determined to be unbalanced, determining a corresponding threshold adjustment value according to a first initial threshold value and a second initial threshold value; and then judging whether the sector load adjustment condition is met or not according to the corresponding threshold adjustment value, and if the corresponding threshold adjustment value meets the sector load adjustment condition, sending the threshold adjustment value to each base station so that the base station adjusts the load of the sector. The method of the invention can automatically realize load balance among different cells adopting different manufacturer equipment, thereby improving user experience.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for multi-carrier load balancing, core network equipment and a storage medium.
Background
With the rapid development of mobile networks, the demand of users for expanding network capacity is increasing. In the conventional network capacity expansion, equipment of the same manufacturer is generally adopted for multi-carrier capacity expansion, and when equipment of different manufacturers is adopted, automatic and effective load balancing cannot be realized due to different base stations accessed by the equipment of different manufacturers, so that the problem of unbalanced load among different cells of the same sector can be caused.
The existing load balancing method is mainly applied to cells covered by equipment of the same manufacturer under the environment of multi-carrier same coverage, namely, the cells covered by the equipment of the same manufacturer can be accessed to the same base station, and part of users in the cells with high load under the same base station are transferred to the cells with low load through the coordination of the base station, so that the load between different frequencies or different systems is balanced.
However, the existing load balancing method cannot be directly applied to load adjustment after capacity expansion of equipment of different manufacturers, and in the implementation process of the method, the probability of using multiple carriers by different cells in the same coverage range is the same, and this vertical layered coverage mode can cause frequent different-frequency switching between multiple carriers for cell users, and thus, the utilization rate of network resources is low, and the user experience is not good enough.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for multi-carrier load balancing, a core network device, and a storage medium, so as to solve the technical problems that an existing load balancing method cannot be directly applied to load adjustment after capacity expansion of a device of a different manufacturer and load adjustment is performed through a vertically layered overlay mode, which results in low network resource utilization rate, frequent user switching, and poor user experience.
In a first aspect, an embodiment of the present invention provides a method for multi-carrier load balancing, where the method is applied to a core network device, the core network device communicates with two different base stations in a same sector, and the sector includes a co-coverage inter-frequency cell pair, where the method includes:
determining a first initial threshold value and a second initial threshold value corresponding to each base station;
judging whether the load of the sector is balanced or not according to the load data of each cell;
if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value;
judging whether the sector load adjustment condition is met or not according to the corresponding threshold adjustment value;
and if the corresponding threshold adjustment value meets the sector load adjustment condition, sending the threshold adjustment value to each base station so that the base station adjusts the load of the sector.
Further, in the method described above, the determining the first initial threshold value and the second initial threshold value corresponding to each base station includes:
acquiring cell data and cell parameters of each cell in the cell pair;
calculating a hierarchical initial value according to the cell data;
and performing initialization parameter configuration on the cell parameters according to the layered initial values to obtain a first initial threshold value and a second initial threshold value.
Further, as described above, the performing initialization parameter configuration on the cell parameter according to the hierarchical initial value to obtain a first initial threshold value and a second initial threshold value includes:
configuring a first initial threshold adjustment step length;
configuring the sum of the hierarchical initial value and the initial threshold adjustment step length as the first initial threshold value;
and configuring the difference between the layered initial value and the preset initial threshold adjusting step length as the second initial threshold value.
Further, the method as described above, the pair of cells comprising: a high priority cell and a low priority cell;
if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value, including:
setting a second initial threshold adjustment step length;
if the load of the high-priority cell is determined to be larger than the load of the low-priority cell, determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to a first initial threshold value, a second initial threshold value and the second initial threshold adjustment step length;
and if the load of the high-priority cell is smaller than the load of the low-priority cell, determining a corresponding third threshold adjustment value and a corresponding fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length.
Further, the method as described above, the determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size includes:
determining the sum of the first initial threshold value and the second initial threshold adjustment step length as a corresponding first threshold adjustment value;
and determining the sum of the second initial threshold value and the second initial threshold adjustment step length as a corresponding second threshold adjustment value.
Further, the determining a third threshold adjustment value and a fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size according to the method described above includes:
determining the difference between the first initial threshold value and the second initial threshold adjustment step length as a corresponding third threshold adjustment value;
and determining the difference between the second initial threshold value and the second initial threshold adjustment step length as a corresponding fourth threshold adjustment value.
Further, the method for determining whether the sector load adjustment condition is satisfied according to the corresponding threshold adjustment value includes:
judging whether the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value or not;
if the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value, determining that a sector load adjustment condition is met;
and if the corresponding threshold adjustment value is larger than the preset load adjustment threshold value, determining that the sector load adjustment condition is not met.
In a second aspect, an embodiment of the present invention provides a device for multi-carrier load balancing, which is applied to a core network device, where the core network device communicates with two different base stations in a same sector, and the sector includes a pair of cells with same coverage and different frequencies, where the device includes:
an initial threshold value determining module, configured to determine a first initial threshold value and a second initial threshold value corresponding to each base station;
the first judging module is used for judging whether the load of the sector is balanced according to the load data of each cell;
a threshold adjustment value determining module, configured to determine a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value if it is determined that the load of the sector is unbalanced;
the second judging module is used for judging whether the sector load adjusting condition is met or not according to the corresponding threshold adjusting value;
and the load adjusting module is used for sending the threshold adjusting value to each base station if the corresponding threshold adjusting value meets the sector load adjusting condition so that the base station adjusts the load of the sector.
Further, in the apparatus described above, the initial threshold determining module is specifically configured to:
acquiring cell data and cell parameters of each cell in the cell pair; calculating a hierarchical initial value according to the cell data; and performing initialization parameter configuration on the cell parameters according to the layered initial values to obtain a first initial threshold value and a second initial threshold value.
Further, in the apparatus as described above, the initial threshold determining module is specifically configured to, when performing initial parameter configuration on the cell parameter according to the hierarchical initial value to obtain a first initial threshold and a second initial threshold:
configuring a first initial threshold adjustment step length; configuring the sum of the hierarchical initial value and the initial threshold adjustment step length as the first initial threshold value; and configuring the difference between the layered initial value and the preset initial threshold adjusting step length as the second initial threshold value.
Further, in the above apparatus, the cell pair includes a high priority cell and a low priority cell, and the threshold adjustment value determining module is specifically configured to:
setting a second initial threshold adjustment step length; if the load of the high-priority cell is determined to be larger than the load of the low-priority cell, determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to a first initial threshold value, a second initial threshold value and the second initial threshold adjustment step length; and if the load of the high-priority cell is smaller than the load of the low-priority cell, determining a corresponding third threshold adjustment value and a corresponding fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length.
Further, in the apparatus as described above, the threshold adjustment value determining module, when determining the corresponding first threshold adjustment value and second threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step length, is specifically configured to:
determining the sum of the first initial threshold value and the second initial threshold adjustment step length as a corresponding first threshold adjustment value;
and determining the sum of the second initial threshold value and the second initial threshold adjustment step length as a corresponding second threshold adjustment value.
Further, in the apparatus as described above, the threshold adjustment value determining module, when determining a third threshold adjustment value and a fourth threshold adjustment value corresponding to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step length, is specifically configured to:
determining the difference between the first initial threshold value and the second initial threshold adjustment step length as a corresponding third threshold adjustment value;
and determining the difference between the second initial threshold value and the second initial threshold adjustment step length as a corresponding fourth threshold adjustment value.
Further, in the apparatus described above, the second determining module is specifically configured to:
judging whether the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value or not; if the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value, determining that a sector load adjustment condition is met; and if the corresponding threshold adjustment value is larger than the preset load adjustment threshold value, determining that the sector load adjustment condition is not met.
In a third aspect, an embodiment of the present invention provides a core network device, including:
a memory, a processor, and a computer program; wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method as defined in any one of the embodiments of the first aspect.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor to implement the method according to any one of the embodiments of the first aspect.
The embodiment of the invention provides a method and a device for multi-carrier load balancing, core network equipment and a storage medium, which are applied to the core network equipment, wherein the core network equipment is communicated with two different base stations in the same sector, the sector comprises a same-coverage pilot frequency cell pair, and the method comprises the following steps: determining a first initial threshold value and a second initial threshold value corresponding to each base station; judging whether the load of the sector is balanced or not according to the load data of each cell; if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value; judging whether the sector load adjustment condition is met according to the corresponding threshold adjustment value; and if the corresponding threshold adjustment value meets the sector load adjustment condition, sending the threshold adjustment value to each base station so that the base station adjusts the load of the sector. According to the embodiment of the invention, the hierarchical initial value is calculated according to the cell data and the cell parameters, the initial threshold value is established, the load balancing condition among the cells is judged, and the threshold value is adjusted according to the judgment result, so that the load balancing among different cells of the same sector adopting different manufacturer equipment can be automatically realized, the utilization rate of network resources is improved, the frequent switching of users among different frequency cells is avoided, and the user experience is improved.
Drawings
Fig. 1 is an application scenario diagram of a multi-carrier load balancing method according to an embodiment of the present invention;
fig. 2 is a flowchart of a multi-carrier load balancing method according to an embodiment of the present invention;
fig. 3 is a flowchart of a multi-carrier load balancing method according to a second embodiment of the present invention;
fig. 4 is a signaling flowchart of a multi-carrier load balancing method according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a multi-carrier load balancing apparatus according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a core network device according to a fifth embodiment of the present invention.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the invention by those skilled in the art with reference to specific embodiments.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
The terms "comprises," "comprising," and "having," and any variations thereof, in the description of embodiments of the invention are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, terms related to the embodiments of the present invention are explained:
physical Resource Block (PRB) utilization: and the average physical resource utilization rate of the cell in a preset time period.
Average number of users: and the average number of users accessing the cell in a preset time period.
Average signal strength: and according to the user measurement report, accessing the average value of the signal intensity of the users of the cell in a preset time period.
Cell minimum access level: a cell can only be selected as a camping cell if its signal strength is greater than the threshold.
Service frequency point low priority reselection threshold: the method is mainly used for the threshold of reselecting a cell with a low priority from a cell with a high priority, namely when the priority of a target cell is lower than that of a current resident cell and the reference power of a received signal of the current resident cell is smaller than the service frequency point low priority reselection threshold, a user is likely to reselect the cell with the priority lower than that of the current resident cell.
The pilot frequency point high priority reselection threshold: when the priority of the target cell is higher than that of the current resident cell and the reference power of the received signal of the target cell is greater than the 'different frequency point high priority reselection threshold', the user is possible to reselect the cell with the priority higher than that of the current resident cell
The following explains an application scenario of the embodiment of the present invention:
fig. 1 is an application scenario diagram of a multi-carrier load balancing method according to an embodiment of the present invention, and as shown in fig. 1, the multi-carrier load balancing system according to the embodiment of the present invention includes: the core network 11, the base stations 12 and 13 connected to the core network, and the sectors 14 of the base stations 12 and 13 cover the first cell 15 and the second cell 16. The core network 11 may be a part of a network subsystem constructed by an operator, may communicate with a plurality of different base stations (the core network and two different base stations in the embodiment of the present invention), and has main functions of providing user connection, managing users, and completing service bearer, and provides an interface to an external network as a bearer network. The physical locations of the base station 12 and the base station 13 may be the same, the area covered by the antenna of the base station is a base station sector, and the base station 12 and the base station 13 are formed by devices of different manufacturers. In general, a base station sector may include multiple cells that communicate using different carriers but with the same coverage direction, and the multiple cells are referred to as a co-coverage and inter-frequency cell pair. For example: the sector 14 covers a first cell 15 and a second cell 16, the first cell 15 communicating with carrier frequency 1 and the second cell 16 communicating with carrier frequency 2. Assuming that carrier frequency 1 is greater than carrier frequency 2, the first cell 15 is configured as a high priority cell, and the second cell 16 is configured as a low priority cell, and since the high priority cell has weaker coverage than the low priority cell, the near-end user resides in the high priority cell and the far-end user resides in the low priority cell.
An application scenario of the embodiment of the present invention may be that a high priority cell and a low priority cell form a same coverage inter-frequency cell pair, the high priority cell and the low priority cell are respectively accessed to a plurality of different users, and the respective user numbers of the two cells may change due to changes in communication environment, user operation, user location, and the like, for example: when the user position changes and the user is changed from a near-end user to a far-end user, the resident cell of the user is changed from a high-priority cell to a low-priority cell, the number of the users in the high-priority cell is increased, and the number of the users in the low-priority cell is reduced; when a certain user in the low-priority cell executes the shutdown operation, the number of users in the low-priority cell is reduced; when the external communication channel changes, which causes the reference power of the received signal of the user to change, the user may also change the accessed cell. Changes in the communication environment, user operation and user location described above will result in changes in the base station parameters, including initial threshold values calculated from the cell data and parameters of the cell pairs covered by the base station. Because the base stations accessed by the high-priority cell and the low-priority cell are different, cell data and parameters between different base stations cannot be shared, and the cell data and parameters of cell pairs covered by different base stations can be obtained through a core network. Therefore, in the core network, first, a first initial threshold and a second initial threshold corresponding to each base station are determined according to the acquired cell data and parameters of the same-coverage and different-frequency cell pair, the cell data and parameters can be acquired from a database on the core network side, and the database can be a public network management platform established and maintained by an operator; secondly, judging whether the load of the sector is balanced or not according to the load data of each cell, wherein the load data can be cell load characterization parameters in a core network side database, judging whether the load of the sector is balanced or not according to the cell load characterization parameters, and if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to a first initial threshold value and a second initial threshold value; then, judging whether the corresponding threshold adjustment value meets the sector load adjustment condition or not, if the corresponding threshold adjustment value meets the sector load adjustment condition, the core network sends the threshold adjustment value to each base station so that the base station adjusts the load of the sector, namely, each base station updates the threshold initial value to the threshold adjustment value, a user of the base station determines whether to perform cell switching or not according to the threshold adjustment value, and finally the load of the sector is balanced.
According to the multi-carrier load balancing method provided by the embodiment of the invention, the initial threshold value is set by acquiring the cell data and parameters of the different manufacturer cell pairs covered by the sectors of different base stations on the core network side, and the initial threshold value is adjusted according to the result of judging the load balancing condition of the cell pairs, so that the load balancing can be automatically realized between different cells of the same sector of different manufacturer equipment, the utilization rate of network resources is improved, frequent switching of users between different frequency cells is avoided, and the user experience is improved.
The following describes the technical solution of the present invention and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 is a flowchart of a multi-carrier load balancing method according to an embodiment of the present invention, and as shown in fig. 2, the multi-carrier load balancing method according to the embodiment includes the following steps.
Step 101, determining a first initial threshold and a second initial threshold corresponding to each base station.
The first initial threshold and the second initial threshold are calculated according to data and parameters of a part of cells covered by the base station and are used for adjusting the load of a cell pair covered by a sector of the base station. Cell data and parameters may include: physical Resource Block (PRB) utilization rate, average user number, average signal strength and minimum access level of a cell.
In this embodiment, the core network obtains cell data and parameters, calculates a first initial threshold and a second initial threshold according to the cell data and the parameters, and then issues the first initial threshold and the second initial threshold to the two base stations, and the base stations may update the first initial threshold and the second initial threshold corresponding to the base stations according to the received first initial threshold and the received second initial threshold.
It can be understood that, the base station may not update the first initial threshold and the second initial threshold sent by the core network, but continue to maintain the original threshold of the base station. The original threshold value is the threshold value of the base station under the condition that the base station meets the normal communication of the cell users of the current cell pair. The threshold values include: a service frequency point low priority reselection threshold and a pilot frequency point high priority reselection threshold.
And 102, judging whether the load of the sector is balanced or not according to the load data of each cell.
The load data may be an average PRB utilization rate of the cell, an average load of users of the cell, or other cell parameters, and is not specifically limited herein. Whether the load of the sector is balanced or not refers to whether the load between the pilot frequency cell pairs covered by the sector is balanced or not.
Specifically, in this embodiment, determining whether the load of the sector is balanced may be implemented by determining a difference between average PRB utilization rates of two cells that cover the inter-frequency cell pair.
Step 103, if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value.
The threshold adjustment value refers to a threshold value for transferring a user in a high priority cell to a low priority cell, or a threshold value for transferring a user in a low priority cell to a high priority cell.
Specifically, in this embodiment, when the loads between the same-sector and co-coverage inter-frequency cell pairs are unbalanced, the threshold adjustment value calculated according to the first initial threshold value and the second initial threshold value may be used to adjust the loads between the cell pairs, so that the loads between the high-priority cell and the low-priority cell are substantially balanced.
And step 104, judging whether the sector load adjustment condition is met according to the corresponding threshold adjustment value.
The determination of whether the sector load adjustment condition is satisfied means that it is determined whether the threshold adjustment value calculated in step 103 exceeds the average signal strength of the sector user, and the average signal strength of the sector user may be calculated according to the cell data.
And 105, if the corresponding threshold adjustment value meets the sector load adjustment condition, sending the threshold adjustment value to each base station so that the base station adjusts the load of the sector.
Specifically, in this embodiment, if the threshold adjustment value does not exceed the average signal strength of the sector user, the core network issues the threshold adjustment value to each base station, and updates the threshold value in the cell parameter, and meanwhile, each base station adjusts the user according to the threshold adjustment value issued by the core network, that is, the user compares the measured base station threshold value with the received signal reference power, and if the received signal reference power of the high-priority cell measured by the user of the high-priority cell is smaller than the base station threshold value, the user of the high-priority cell is transferred to the low-priority cell; or if the reference power of the received signal of the high-priority cell measured by the user of the low-priority cell is greater than the threshold value of the base station, the user of the low-priority cell is transferred to the high-priority cell, and finally the loads of the high-priority cell and the low-priority cell are basically balanced.
The embodiment of the invention provides a multi-carrier load balancing method, which is applied to core network equipment, wherein the core network equipment is communicated with two different base stations in the same sector, and the sector comprises a same-coverage pilot frequency cell pair, and the method comprises the following steps: determining a first initial threshold value and a second initial threshold value corresponding to each base station; judging whether the load of the sector is balanced or not according to the load data of each cell; if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to a first initial threshold value and a second initial threshold value; judging whether the sector load adjustment condition is met according to the corresponding threshold adjustment value; if the corresponding threshold adjustment value meets the sector load adjustment condition, the threshold adjustment value is sent to each base station, so that the base station adjusts the load of the sector. According to the embodiment of the invention, the hierarchical initial value is calculated according to the cell data and the cell parameters, the initial threshold value is established, the load balancing condition among the cells is judged, and the threshold value is adjusted according to the judgment result, so that the load balancing among different cells of the same sector adopting different manufacturer equipment can be automatically realized, the utilization rate of network resources is improved, the frequent switching of users among different frequency cells is avoided, and the user experience is improved.
Fig. 3 is a flowchart of a multi-carrier load balancing method according to a second embodiment of the present invention, and as shown in fig. 3, the multi-carrier load balancing method according to the second embodiment of the present invention further refines steps 101 to 105 on the basis of the second embodiment, and includes the following steps.
Step 201, determining a first initial threshold and a second initial threshold corresponding to each base station.
Optionally, step 201 comprises the steps of:
in step 2011, cell data and cell parameters of each cell in the cell pair are obtained.
Step 2012, a hierarchical initial value is calculated based on the cell data.
Step 2013, performing initialization parameter configuration on the cell parameters according to the hierarchical initial values to obtain a first initial threshold value and a second initial threshold value.
Optionally, step 2013 includes the following steps:
step 20131, configuring a first initial threshold adjustment step.
Step 20132, configure the sum of the hierarchical initial value and the initial threshold adjustment step as the first initial threshold value.
Step 20133, configure the difference between the hierarchical initial value and the preset initial threshold adjustment step as a second initial threshold value.
Specifically, in this embodiment, first, data and parameters of the cells in the same coverage and different frequencies are obtained through a public network management platform of an operator, and a cell data parameter database is established. The cell data of the cell data parameter database comprises: cell ID number (identification code of resident cell), PRB utilization rate, average user number, average signal strength and cell minimum access level. And updating the cell data at regular time according to the requirements of operators. The cell parameters of the cell data parameter base include: a service frequency point low priority reselection threshold and a pilot frequency point high priority reselection threshold.
Secondly, calculating a hierarchical initial value according to the cell data in the established cell data parameter database, wherein the specific calculation method comprises the following steps:
according to the introduction of the application scenario in the first embodiment, the average PRB utilization rates of the low priority cell and the high priority cell are defined as P a And P b The average number of users is N a And N b Average signal intensity of R a And R b Then, the average PRB utilization rate of the single user is
S a ＝P a /N a ，S b ＝P b /N b
Because the single user PRB utilization rates at different distances are different, the near-end user resource overhead is lower, the far-end user resource overhead is higher, and in order to reasonably balance the load among different carrier cells, the user data under the sector is combined to calculate the hierarchical initial value R s ：
R s ＝R a ×N a ×S a /(S a +S b )+R b ×N b ×S b /(S a +S b )
Finally, configuring a first initial threshold adjusting step length as l, and performing initial parameter configuration on cell parameters according to the layered initial values to obtain a first initial threshold value and a second initial threshold value, wherein a calculation formula is as follows:
first initial threshold value = R s +l (1)
Second initial threshold = R s -l (2)
Wherein R is s The value of l is 2 for the initial layering value, and it should be noted that l may also be 1 or 3. The range of the buffer interval formed by meeting the first initial threshold value and the second initial threshold value is moderate.
Step 202, determine whether the load between the high priority cell and the low priority cell is balanced.
Specifically, in this embodiment, if the absolute value of the difference between Pa and pb is smaller than the load balancing threshold, the load between the high priority cell and the low priority cell is considered to be balanced, otherwise, the load between the high priority cell and the low priority cell is considered to be unbalanced, and the load balancing threshold may be 30%, or other suitable values, for example: 25%, which is not particularly limited in this embodiment.
According to the judgment result, when the load between the high priority cell and the low priority cell is balanced, executing step 210; otherwise, when the load between the high priority cell and the low priority cell is not balanced, step 203 is performed.
Step 203, setting a second initial threshold adjustment step size.
Specifically, in this embodiment, the second initial threshold adjustment step size is set to p. Wherein, the value of p is 1, it should be noted that the value of p can also be adjusted according to actual needs, for example: if the difference between the load of the high-priority cell and the load of the low-priority cell is large, the value of p can be expanded properly, that is, the value of p is 2.
Step 204, determining whether the load of the high priority cell is greater than the load of the low priority cell, if so, executing step 205, otherwise, executing step 206.
Specifically, in this embodiment, the calculation formulas of the first threshold adjustment value and the second threshold adjustment value are as follows:
first threshold adjustment value = R s +l+p (3)
Second threshold adjustment value = R s -l+p (4)
Wherein R is s Is a hierarchical initial value, l is a first initial threshold adjustment step length, and p is a second initial threshold adjustment step length.
Step 206, determining a third threshold adjustment value and a fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length.
Specifically, in this embodiment, the calculation formulas of the third threshold adjustment value and the fourth threshold adjustment value are as follows:
third threshold adjustment value = R s +l-p (5)
Fourth threshold adjustment value = R s -l-p (6)
Wherein R is s And the initial value is a hierarchical initial value, l is a first initial threshold adjustment step length, and p is a second initial threshold adjustment step length.
Steps 203-206 are an alternative implementation of determining the corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value.
Step 207, determining whether the corresponding threshold adjustment value meets the sector load adjustment condition, if yes, performing step 209, otherwise, performing step 208.
Optionally, step 207 comprises the steps of:
step 2071, determining whether the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value;
step 2072, if the corresponding threshold adjustment value is smaller than the preset load adjustment threshold, determining that the sector load adjustment condition is satisfied;
step 2073, if it is determined that the corresponding threshold adjustment value is greater than the preset load adjustment threshold, it is determined that the sector load adjustment condition is not satisfied.
Specifically, in this embodiment, the cell data in step 201 is used as the basisAnd cell parameter preset load adjustment threshold, i.e. sector user average signal strength
The calculation method comprises the following steps:
if the first threshold adjustment value and the second threshold adjustment value are not greater than the average signal strength of the sector user, the sector load adjustment condition is satisfied, or if the third threshold adjustment value and the fourth threshold adjustment value are not greater than the average signal strength of the sector user, the sector load adjustment condition is satisfied, and step 209 is performed. The judgment of the first threshold adjustment value and the second threshold adjustment value and the judgment of the third threshold adjustment value and the fourth threshold adjustment value belong to two different situations, and only one of the situations is processed in the actual judgment.
If the first threshold adjustment value and the second threshold adjustment value are greater than the average signal strength of the sector user, the sector load adjustment condition is not satisfied, or if the third threshold adjustment value and the fourth threshold adjustment value are greater than the average signal strength of the sector user, the sector load adjustment condition is not satisfied, and step 208 is executed. Similarly, the judgment of the first threshold adjustment value and the second threshold adjustment value and the judgment of the third threshold adjustment value and the fourth threshold adjustment value belong to two different situations, and only one of the situations is processed in the actual judgment.
And step 208, sending a parameter adjustment out-of-range confirmation message to the maintenance user terminal, so that the maintenance user can check the station according to the adjustment out-of-range confirmation message.
Specifically, in this embodiment, when the threshold adjustment value exceeds the average signal strength of the sector user, the core network sends a parameter adjustment out-of-range confirmation message to the maintenance user terminal, where the message may be directly displayed on an interface of the maintenance user terminal, or may prompt the user through a preset alarm sound to adjust the parameter out-of-range, where this is not limited. After the adjustment of the user knowledge parameters exceeds the range, the user needs to check to go to the station, and check whether the equipment has a fault or whether the cell pair is a same-coverage different-frequency cell pair.
Step 209, the core network issues a parameter adjustment command, updates the threshold value and the interval time T in the cell data parameter database 1 Then, the number is fetched again and the procedure returns to step 202.
Optionally, determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size includes:
determining the sum of the first initial threshold value and the second initial threshold adjustment step length as a corresponding first threshold adjustment value;
and determining the sum of the second initial threshold value and the second initial threshold adjustment step size as a corresponding second threshold adjustment value.
Specifically, in this embodiment, according to the formula (3) and the formula (4) in step 205, the core network issues the first threshold adjustment value and the second threshold adjustment value to the base station 12 and the base station 13, and updates the first initial threshold value and the second initial threshold value in the cell data parameter database to the first threshold adjustment value and the second threshold adjustment value, so that the cell user to which the base station belongs can obtain the base station parameters of the camped cell and the adjacent cell, that is, the first threshold adjustment value and the second threshold adjustment value, and at the same time, the cell user can measure the received signal reference powers of the camped cell and the target cell, and determine whether to access other cells according to the first threshold adjustment value, the second threshold adjustment value, and the received signal reference power.
For example: under the scene that the load between the high-priority cell and the low-priority cell is unbalanced and the load of the high-priority cell is greater than the load of the low-priority cell, when the reference power of the received signal of the high-priority cell measured by the user of the high-priority cell is smaller than a second threshold adjustment value, the user of the high-priority cell is transferred to the low-priority cell, so that the number of the users of the high-priority cell is reduced, the number of the users of the low-priority cell is increased, the load of the high-priority cell is reduced, the load of the low-priority cell is increased, and finally the load between the two cells is basically balanced.
Optionally, determining a third threshold adjustment value and a fourth threshold adjustment value corresponding to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size includes:
determining the difference between the first initial threshold value and the second initial threshold adjustment step length as a corresponding third threshold adjustment value;
and determining the difference between the second initial threshold value and the second initial threshold adjustment step length as a corresponding fourth threshold adjustment value.
Specifically, in this embodiment, according to the formula (5) and the formula (6) in step 206, the core network issues the third threshold adjustment value and the fourth threshold adjustment value to the base station 12 and the base station 13, and updates the first initial threshold value and the second initial threshold value in the cell data parameter database to the third threshold adjustment value and the fourth threshold adjustment value, so that the cell user to which the base station belongs can obtain the base station parameters of the camped cell and the neighboring cell, that is, the third threshold adjustment value and the fourth threshold adjustment value, and at the same time, the cell user can measure the received signal reference powers of the camped cell and the target cell, and determine whether to access to another cell according to the third threshold adjustment value, the fourth threshold adjustment value, and the received signal reference power.
For example: under the scene that the load between the high-priority cell and the low-priority cell is unbalanced and the load of the high-priority cell is smaller than the load of the low-priority cell, when the reference power of the received signal of the high-priority cell measured by the user of the low-priority cell is larger than a third threshold adjustment value, the user of the low-priority cell is transferred to the high-priority cell, so that the number of the users of the low-priority cell is reduced, the number of the users of the high-priority cell is increased, the load of the low-priority cell is reduced, the load of the high-priority cell is increased, and finally the load between the two cells is basically balanced.
It should be noted that, when the load between the high-priority cell and the low-priority cell is unbalanced, no matter how the load between the high-priority cell and the low-priority cell is, when the user determines that the received signal reference power is between the first threshold and the second threshold, or the received signal reference power is between the third threshold and the fourth threshold, no transfer is made, and the user still stays in the current resident cell and does not perform cell switching.
As above, after the user performs load balancing automatically according to the threshold adjustment value issued by the base station, the interval time T is 1 Then, the data is fetched again, and the step 202 is returned to, and the load balancing effect is detected, that is, whether the load between the high priority cell and the low priority cell is balanced is determined. The re-fetching refers to re-obtaining the cell data and the updated threshold value from the cell data parameter database, and the threshold value is also the threshold adjustment value. Time T 1 The values of (a) can be set according to actual requirements, for example: it may be 5 minutes, 10 minutes or 20 minutes, 30 minutes, etc.
In step 210, if the detected load balancing result is balanced, the timer T is reset, and step 211 is performed.
Specifically, in this embodiment, when it is detected that the load between the high priority cell and the low priority cell reaches equilibrium, the timer T is reset, and the process proceeds to step 211. The value of the timer T can be set according to actual requirements, for example: from one day to 3 days.
And step 211, ending the countdown of the timer T, re-fetching and judging whether the load of the sector is balanced, if so, resetting the timer T, otherwise, the load is unbalanced, and returning to the step 201.
Specifically, in this embodiment, when the load between the cells with the same coverage and different frequency of the review sector reaches the balance, the timer T is reset, otherwise, from step 201, the load between the cells with the same coverage and different frequency is adjusted again so that the load of the sector reaches the balance.
The embodiment of the invention provides a multi-carrier load balancing method which is applied to core network equipment, the embodiment of the invention calculates a hierarchical initial value according to cell data and cell parameters and establishes an initial threshold value, judges the load balancing condition between cells and adjusts the threshold value according to the judgment result, so that the load balancing between different cells of the same sector adopting equipment of different manufacturers can be automatically realized, and the utilization rate of network resources is improved. In addition, through setting up the timer, can practice thrift the human cost, shorten the problem and handle time length.
Fig. 4 is a signaling flowchart of a multi-carrier load balancing method according to a third embodiment of the present invention, and as shown in fig. 4, the multi-carrier load balancing method according to the third embodiment includes the following steps.
Step 301, the core network calculates a threshold adjustment value, and determines that the threshold adjustment value satisfies the sector load adjustment condition.
Specifically, in this embodiment, the core network calculates an initial threshold value according to the cell data and the parameters in the cell data parameter database, configures a second initial threshold adjustment step size, and calculates a threshold adjustment value according to the initial threshold value and the second initial threshold adjustment step size. Then, the threshold adjusting value is determined to meet the sector load adjusting condition.
Step 302, the core network issues a parameter adjustment instruction.
Specifically, in this embodiment, when the threshold adjustment value satisfies the sector load adjustment condition, that is, the threshold adjustment value is not greater than the average signal strength of the sector user, the core network sends the threshold adjustment value calculated in step 301 to each base station.
Step 303, the base station updates the configuration parameters of the base station, wherein the parameters comprise threshold initial values.
Specifically, in this embodiment, the base station updates its configuration parameters, where the parameters include a threshold initial value, that is, the threshold initial value is updated to a threshold adjustment value.
Step 304, the cell user sends a parameter acquisition request.
Specifically, in this embodiment, the cell user periodically sends a parameter acquisition request to the base station.
The parameter obtaining request comprises identification information of obtaining parameters, and the identification information of the parameters is identification information of threshold adjusting values in base station configuration parameters.
Step 305, the base station issues a parameter acquisition response.
Specifically, in this embodiment, the base station returns a parameter obtaining response according to a parameter obtaining request sent by a cell user, where the parameter obtaining response includes corresponding parameter information, that is, a threshold adjustment value.
Step 306, the cell user judges whether to perform cell switching according to the corresponding parameters.
Specifically, in this embodiment, the cell user determines whether cell handover is required according to the threshold adjustment value and the reference power of the received signal of the cell. When a user selects a cell to switch and access, the cell switching is carried out according to the reference power of the received signal of the current resident cell or the reference power of the received signal of at least one target cell adjacent to the resident cell and a threshold adjustment value, when the switching condition is met, the cell switching is carried out, and the access cell of the user is changed into the target cell from the current resident cell. For a specific handover process, reference may be made to the description of step 209 in embodiment two, which is not described herein again.
According to the multi-carrier load balancing method provided by the embodiment of the invention, the core network calculates the hierarchical initial value according to the cell data and the cell parameters and establishes the initial threshold value, the load balancing condition between the cells is judged, and the threshold value is adjusted according to the judgment result, so that the load balancing can be automatically realized between different cells of the same sector adopting different manufacturer equipment, and the network resource utilization rate is improved. In addition, through setting up the timer, can practice thrift the human cost, shorten the problem and handle time length.
Fig. 5 is a schematic structural diagram of a multi-carrier load balancing apparatus according to a fourth embodiment of the present invention, and as shown in fig. 5, the multi-carrier load balancing apparatus according to the present embodiment includes: the system comprises an initial threshold value determining module 20, a first judging module 21, a threshold adjusting value determining module 22, a second judging module 23 and a load adjusting module 24. Wherein,
an initial threshold value determining module 20, configured to determine a first initial threshold value and a second initial threshold value corresponding to each base station.
A first judging module 21, configured to judge whether the load of the sector is balanced according to the load data of each cell.
A threshold adjustment value determining module 22, configured to determine a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value if it is determined that the load of the sector is unbalanced.
And a second determining module 23, configured to determine whether the sector load adjustment condition is satisfied according to the corresponding threshold adjustment value.
And a load adjusting module 24, configured to send the threshold adjustment value to each base station if the corresponding threshold adjustment value meets the sector load adjustment condition, so that the base station adjusts the load of the sector.
The initial threshold value determining module 20 is connected to the first determining module 21, the first determining module 21 is connected to the threshold adjustment value determining module 22, the threshold adjustment value determining module 22 is connected to the second determining module 23, and the second determining module 23 is connected to the load adjusting module 24.
The multi-carrier load balancing apparatus provided in this embodiment may execute the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, in the multi-carrier load balancing apparatus provided in the fifth embodiment, the initial threshold determining module 20 is specifically configured to: acquiring cell data and cell parameters of each cell in a cell pair; calculating a hierarchical initial value according to the cell data; and performing initialization parameter configuration on the cell parameters according to the layered initial values to obtain a first initial threshold value and a second initial threshold value.
Further, the initial threshold determining module 20, when performing initial parameter configuration on the cell parameter according to the hierarchical initial value to obtain a first initial threshold and a second initial threshold, is specifically configured to: configuring a first initial threshold adjustment step length; configuring the sum of the layering initial value and the initial threshold adjustment step length as a first initial threshold value; and configuring the difference between the layered initial value and the preset initial threshold adjusting step length as a second initial threshold value.
Further, the cell pair includes a high priority cell and a low priority cell, and the threshold adjustment value determining module 22 is specifically configured to: setting a second initial threshold adjustment step length; if the load of the high-priority cell is determined to be larger than the load of the low-priority cell, determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to a first initial threshold value, a second initial threshold value and a second initial threshold adjustment step length; and if the load of the high-priority cell is smaller than the load of the low-priority cell, determining a corresponding third threshold adjustment value and a corresponding fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length.
Further, the threshold adjustment value determining module 22, when determining the corresponding first threshold adjustment value and second threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step length, is specifically configured to: determining the sum of the first initial threshold value and the second initial threshold adjustment step length as a corresponding first threshold adjustment value; and determining the sum of the second initial threshold value and the second initial threshold adjustment step size as a corresponding second threshold adjustment value.
Further, the threshold adjustment value determining module 22, when determining a third threshold adjustment value and a fourth threshold adjustment value corresponding to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step length, is specifically configured to: determining the difference between the first initial threshold value and the second initial threshold adjustment step length as a corresponding third threshold adjustment value; and determining the difference between the second initial threshold value and the second initial threshold adjustment step length as a corresponding fourth threshold adjustment value.
Further, the second determining module 23 is specifically configured to: judging whether the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value or not; if the corresponding threshold adjustment value is smaller than the preset load adjustment threshold value, determining that the sector load adjustment condition is met; and if the corresponding threshold adjustment value is larger than the preset load adjustment threshold value, determining that the sector load adjustment condition is not met.
Further, the multi-carrier load balancing apparatus provided in this embodiment may also execute the technical solution of the method embodiment shown in fig. 3, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of a core network device according to a fifth embodiment of the present invention, and as shown in fig. 6, the core network device according to this embodiment includes: a memory 1001, a processor 1002, and computer programs.
Wherein the computer program is stored in the memory 1001 and configured to be executed by the processor 1002 to implement the multi-carrier load balancing method provided by any one of the embodiments corresponding to fig. 2-4 of the present invention.
The memory 1001 and the processor 1002 are connected by a bus 1003.
The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in fig. 2 to fig. 4, and redundant description is not repeated here.
One embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for multi-carrier load balancing provided in any embodiment of fig. 2 to 4.
The computer readable storage medium may be, among others, ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A method for multi-carrier load balancing, applied to a core network device, the core network device communicating with two different base stations in a same sector, the sector including a co-coverage inter-frequency cell pair, the method comprising:
determining a first initial threshold value and a second initial threshold value corresponding to each base station;
judging whether the load of the sector is balanced or not according to the load data of each cell;
if the load of the sector is determined to be unbalanced, determining two corresponding threshold adjustment values according to the first initial threshold value and the second initial threshold value;
judging whether the sector load adjustment condition is met according to the two corresponding threshold adjustment values;
if the two corresponding threshold adjustment values meet the sector load adjustment condition, the two threshold adjustment values are sent to each base station so that the base station can adjust the load of the sector; the terminal with the received signal reference power between the two threshold adjustment values is kept in the state of residing in the current cell;
the determining the first initial threshold value and the second initial threshold value corresponding to each base station includes:
acquiring cell data and cell parameters of each cell in the cell pair;
calculating a hierarchical initial value according to the cell data of each cell;
configuring a first initial threshold adjustment step length;
configuring the sum of the hierarchical initial value and the initial threshold adjustment step length as the first initial threshold value;
and configuring the difference between the hierarchical initial value and a preset initial threshold adjusting step length as the second initial threshold value.
2. The method of claim 1, wherein the cell pair comprises: a high priority cell and a low priority cell;
if the load of the sector is determined to be unbalanced, determining a corresponding threshold adjustment value according to the first initial threshold value and the second initial threshold value, including:
setting a second initial threshold adjustment step length;
if the load of the high-priority cell is determined to be greater than the load of the low-priority cell, determining a corresponding first threshold adjustment value and a corresponding second threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length;
and if the load of the high-priority cell is smaller than the load of the low-priority cell, determining a corresponding third threshold adjustment value and a corresponding fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value and the second initial threshold adjustment step length.
3. The method of claim 2, wherein determining the corresponding first threshold adjustment value and second threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size comprises:
determining the sum of the first initial threshold value and the second initial threshold adjustment step length as a corresponding first threshold adjustment value;
and determining the sum of the second initial threshold value and the second initial threshold adjustment step length as a corresponding second threshold adjustment value.
4. The method of claim 2, wherein determining a third threshold adjustment value and a fourth threshold adjustment value according to the first initial threshold value, the second initial threshold value, and the second initial threshold adjustment step size comprises:
determining the difference between the first initial threshold value and the second initial threshold adjustment step length as a corresponding third threshold adjustment value;
and determining the difference between the second initial threshold value and the second initial threshold adjustment step length as a corresponding fourth threshold adjustment value.
5. The method of claim 2, wherein said determining whether a sector load adjustment condition is satisfied according to the corresponding threshold adjustment value comprises:
judging whether the corresponding threshold adjustment value is smaller than a preset load adjustment threshold value or not;
if the corresponding threshold adjustment value is smaller than the preset load adjustment threshold value, determining that a sector load adjustment condition is met;
and if the corresponding threshold adjustment value is larger than the preset load adjustment threshold value, determining that the sector load adjustment condition is not met.
6. An apparatus for multi-carrier load balancing, applied to a core network device, the core network device communicating with two different base stations in a same sector, the sector including a co-coverage inter-frequency cell pair, the apparatus comprising:
an initial threshold value determining module, configured to determine a first initial threshold value and a second initial threshold value corresponding to each base station;
a first judging module, configured to judge whether the load of the sector is balanced according to the load data of each cell;
a threshold adjustment value determining module, configured to determine two corresponding threshold adjustment values according to the first initial threshold value and the second initial threshold value if it is determined that the load of the sector is unbalanced;
the second judging module is used for judging whether the sector load adjusting condition is met according to the two corresponding threshold adjusting values;
a load adjusting module, configured to send the two threshold adjustment values to each base station if the two corresponding threshold adjustment values satisfy the sector load adjustment condition, so that the base station adjusts the load of the sector;
the terminal with the received signal reference power between the two threshold adjustment values is kept in the state of residing in the current cell;
the initial threshold value determining module is specifically configured to:
acquiring cell data and cell parameters of each cell in the cell pair;
calculating a hierarchical initial value according to the cell data of each cell;
configuring a first initial threshold adjustment step length;
configuring the sum of the hierarchical initial value and the initial threshold adjustment step length as the first initial threshold value;
and configuring the difference between the layered initial value and a preset initial threshold adjusting step length as the second initial threshold value.
7. A core network device, comprising:
a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-5.
8. A computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of any one of claims 1-5.
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