CN110972190A - Load balancing optimization method and device - Google Patents
Load balancing optimization method and device Download PDFInfo
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- CN110972190A CN110972190A CN201811163072.2A CN201811163072A CN110972190A CN 110972190 A CN110972190 A CN 110972190A CN 201811163072 A CN201811163072 A CN 201811163072A CN 110972190 A CN110972190 A CN 110972190A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
Abstract
The invention provides a load balancing optimization method and device. The method comprises the following steps: when detecting that a first resource load of a source cell reaches a preset load threshold value, determining a target cell adjacent to the source cell; issuing location request information to a plurality of user terminals served by the source cell; receiving a measurement report reported by each user terminal; each measurement report comprises first longitude and latitude information of the user terminal; determining second longitude and latitude information of the source cell; calculating the distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information; determining at least one user terminal meeting preset conditions from a plurality of user terminals according to the distances; switching the at least one user terminal from the source cell to the target cell. The method has higher measurement precision, thereby reducing the measurement error and improving the implementation effect of load balancing.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a load balancing optimization method and apparatus.
Background
With the large-scale commercial use of LTE, the geometric level of the number of users rises, and the network load increases sharply. In order to meet the increasing demand, the network structure has the characteristic of multilevel, and the phenomenon of uneven distribution of users is serious due to the reduction of the cell radius. In the existing wireless mobile network, under many scenes, a large number of users are concentrated in one or two cells, and the phenomenon that users in adjacent cells (in-station or between-station) with the same coverage area or with an overlapped coverage area are fewer causes that network resources cannot be fully applied and the problem of unbalanced cell load is increasingly highlighted. The problem of cell load imbalance not only reduces the network capacity, but also affects the Quality of Service (QoS), and also has a certain effect on the user perception.
In the prior art, the load balancing method is generally adopted as follows:
when the cell reaches high load, firstly selecting a balanced same-coverage adjacent cell, configuring the user selection of measurement, taking the cell which is not reported with A2 measurement as a central user, reporting the cell which is measured with A2 as an edge user, preferentially selecting the cell with A4 measurement as the central user, selecting the cell with A4 measurement as the edge user when the central user can not select enough users, sequencing the users based on the load balance of a certain type of PRB (physical resource Block) or the load balance based on the number of users, performing A4 measurement configuration of load balance on the selected users, performing load balance switching on the users which report the A4 measurement, and completing the load balance process.
When the load balancing is executed to select a balancing object by using a strategy of using user location information, currently, it is generally determined that a user terminal is a central user or an edge user by using a measurement value of a wireless signal a2, that is, the distance from the user terminal to the center of a cell is measured by the strength of the wireless signal, and the distance is greatly affected by unstable propagation of the wireless signal and inaccurate wireless measurement value. The wireless signal propagation is greatly influenced by the surrounding environment, various scattering, diffraction and refraction exist in the transmission, and in a complex electromagnetic environment, various interferences also exist among wireless signals. The distance from the user terminal to the center of the cell is reflected by the strength of the wireless signal and is used as a standard selected by a center user and an edge user of the load balancing algorithm, the measurement precision is poor, the error of a measured value is large, and the implementation of the load balancing algorithm is seriously influenced.
Disclosure of Invention
The invention provides a load balancing optimization method and a load balancing optimization device, which are used for solving the problems that the conventional load balancing algorithm reflects the distance from a user terminal to the center of a cell by the strength of a wireless signal, is used as a standard selected by a center user and an edge user of the load balancing algorithm, has poor measurement precision and large measurement value error and seriously influences the implementation of the load balancing algorithm.
In order to solve the above problems, the present invention discloses a load balancing optimization method, which comprises: when detecting that a first resource load of a source cell reaches a preset load threshold value, determining a target cell adjacent to the source cell; issuing location request information to a plurality of user terminals served by the source cell; receiving a measurement report reported by each user terminal; each measurement report comprises first longitude and latitude information of the user terminal; determining second longitude and latitude information of the source cell; calculating the distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information; determining at least one user terminal meeting preset conditions from a plurality of user terminals according to the distances; switching the at least one user terminal from the source cell to the target cell.
Preferably, the step of determining the target cell adjacent to the source cell includes: determining a plurality of cells neighboring the source cell; acquiring a second resource load of each cell; and taking the cell with the minimum second resource load as the target cell.
Preferably, after the step of calculating the distance between each user terminal and the source cell according to each of the first longitude and latitude information and the second longitude and latitude information, the method further includes: and adding the user terminals to the queue to be switched in sequence according to the sequence of the distances from small to large.
Preferably, the step of determining at least one ue meeting a preset condition from the plurality of ues according to each of the distances includes: acquiring a current load value and a target load threshold value of the target cell; determining the number of user terminals needing cell switching according to the first resource load, the current load value and the target load threshold value; and sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals from small to large.
Preferably, the step of handing over the at least one user terminal from the source cell to the target cell includes: and switching the corresponding number of user terminals from the source cell to the target cell.
In order to solve the above problem, the present invention also discloses a load balancing optimization apparatus, including: the target cell determining module is used for determining a target cell adjacent to a source cell when detecting that a first resource load of the source cell reaches a preset load threshold value; a request information sending module, configured to issue location request information to a plurality of user terminals served by the source cell; a measurement report receiving module, configured to receive a measurement report reported by each ue; each measurement report comprises first longitude and latitude information of the user terminal; the second longitude and latitude information determination module is used for determining second longitude and latitude information of the source cell; a distance calculation module, configured to calculate a distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information; the user terminal determining module is used for determining at least one user terminal which meets the preset conditions from the plurality of user terminals according to the distances; a target cell switching module, configured to switch the at least one ue from the source cell to the target cell.
Preferably, the target cell determining module includes: a plurality of cell determination submodules for determining a plurality of cells adjacent to the source cell; a second load obtaining submodule, configured to obtain a second resource load of each cell; and the target cell determining submodule is used for taking the cell with the minimum second resource load as the target cell.
Preferably, the method further comprises the following steps: and the user terminal adding module is used for sequentially adding each user terminal to the queue to be switched according to the sequence of the distances from small to large.
Preferably, the user terminal determining module includes: a load threshold obtaining submodule, configured to obtain a current load value and a target load threshold value of the target cell; a user terminal number determining submodule, configured to determine, according to the first resource load, the current load value, and the target load threshold value, the number of user terminals that need to perform cell switching; and the user terminal selection submodule is used for sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals and the sequence of the distances from small to large.
Preferably, the target cell handover module includes: and the target cell switching submodule is used for switching the user terminals with the corresponding number from the source cell to the target cell.
Compared with the prior art, the invention has the following advantages:
the embodiment of the invention provides a load balancing optimization method and a load balancing optimization device, when detecting that a first resource load of a source cell reaches a preset load threshold value, a target cell adjacent to the source cell is determined, position request information is issued to a plurality of user terminals provided with service by the source cell, a plurality of measurement reports reported by the user terminals are received, wherein each measurement report comprises first longitude and latitude information of the user terminal, the distance between each user terminal and the source cell is calculated according to the first longitude and latitude information and the second longitude and latitude information by determining the second longitude and latitude information of the source cell, at least one user terminal meeting preset conditions is determined from the user terminals according to each distance, and the at least one user terminal is switched from the source cell to the target cell. The embodiment of the invention judges the position of the user terminal according to the position information in the measurement report reported by the user terminal, thereby accurately distinguishing the central user and the edge user, having higher measurement precision, further reducing the measurement error and improving the implementation effect of load balancing.
Drawings
Fig. 1 is a flowchart illustrating steps of a load balancing optimization method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a load balancing optimization method according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a distance distribution of user terminal locations according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a device for equalization optimization according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a flowchart of steps of a load balancing optimization method provided in an embodiment of the present invention is shown, where the load balancing optimization method may be applied to a base station, and specifically may include the following steps:
step 101: and when detecting that the first resource load of the source cell reaches a preset load threshold value, determining a target cell adjacent to the source cell.
The load balancing optimization method provided by the embodiment of the invention can be applied to the base station, and the base station carries out load balancing optimization according to the current resource load of the cell in the coverage area of the base station.
The first resource load is the current resource load of the source cell, and the preset load threshold is the load threshold of the source cell.
Each cell is preset with a corresponding load threshold, and when the resource load of a certain cell reaches or exceeds the load threshold, the network capacity is reduced and the network QoS is influenced.
In the embodiment of the present invention, a cell load detection timer may be preset, and after the timer is turned on, the cell load state may be periodically detected, and a detection scheme for the cell load state is a mature technology in the art, and the embodiment of the present invention is not described in detail herein.
When the detected first resource load of the source cell reaches a preset load threshold value, selecting one cell from a plurality of cells adjacent to the source cell as a target cell, wherein the current resource load of the target cell does not reach the load threshold value of the target cell.
A detailed description of how to select a cell from a plurality of cells adjacent to the source cell as the target cell will be described in the following second embodiment, and will not be repeated herein.
After determining the target cell neighboring the source cell, step 102 is performed.
Step 102: and issuing the position request information to a plurality of user terminals served by the source cell.
After determining the target cell, the base station may first acquire a plurality of user terminals served by the source cell, that is, a plurality of user terminals access the service acquired by the source cell.
The base station may generate location request information and send the location request information to a plurality of user terminals served by the source cell, and specifically, the base station may add the location request information to rrcconnectionreconfiguration (rrc connection Reconfiguration) and send the location request information to the plurality of user terminals, and request the user terminals to report their located location information.
After the location request information is issued to the plurality of ues served by the source cell, step 103 is further executed.
Step 103: receiving a measurement report reported by each user terminal; wherein each of the measurement reports includes first longitude and latitude information of the user terminal.
The first longitude and latitude information refers to the longitude and latitude where the user terminal is located currently.
The user terminal side is usually provided with a Global Positioning System (GPS), and the GPS may acquire the location information of the user terminal in real time, and of course, the user terminal may also acquire the first longitude and latitude information of the user terminal in other manners.
After the ue obtains the first longitude and latitude information, the ue may add the first longitude and latitude information to the measurement report and report the measurement report to the base station.
The base station receives the measurement report reported by each ue, where the measurement report includes the first longitude and latitude information of the ue, and then performs step 104.
Step 104: and determining second longitude and latitude information of the source cell.
In the embodiment of the invention, the second longitude and latitude information of the source cell is the longitude and latitude information of the central transmitting station of the source cell.
The base station side prestores detailed information of each cell under the base station, such as cell identification, cell longitude and latitude information and the like, and the base station can acquire second longitude and latitude information of the source cell, namely second longitude and latitude information of a central transmitting station of the source cell, from the prestored information according to the identification of the source cell.
After determining the second latitude and longitude information of the source cell, step 105 is performed.
Step 105: and calculating the distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information.
In the embodiment of the invention, the distance between the user terminal and the source cell is the distance between the user terminal and the central transmitting station of the source cell.
After the first longitude and latitude information of each user terminal and the second longitude and latitude information of the source cell center transmitting station are obtained, the distance between each user terminal and the source cell center transmitting station can be calculated according to the first longitude and latitude information and the second longitude and latitude information.
For example, the longitude and latitude of the user terminal a is a (Ja, Wa), the longitude and latitude of the central transmitting station of the source cell C is C (Jc, Wc), and the distance between the user terminal a and the source cell C may be calculated by referring to the following formula (1):
D＝R*arc cos[cosWa cosWc cos(Ja-Jc)+sinWa sinWc](1)
in the above formula (1), D represents a distance, and R represents a radius of the earth.
And substituting the longitude and latitude of the user terminal A and the longitude and latitude of the source cell C into the formula (1) to calculate and obtain the distance between the user terminal A and the source cell C.
After calculating the distance between each user terminal and the source cell, step 106 is performed.
Step 106: and determining at least one user terminal meeting preset conditions from the plurality of user terminals according to the distances.
In the embodiment of the present invention, the preset condition may be a distance condition between each ue and the source cell, and of course, may also be other conditions, which is not limited in the embodiment of the present invention.
After the base station obtains the location information of each ue, at least one ue meeting the preset condition may be determined from the multiple ues served by the source cell according to the first longitude and latitude information of each ue, for example, 2 ues or 3 ues closest to the central transmitting station of the source cell are selected from the multiple ues served by the source cell.
After determining at least one ue meeting the preset condition, step 107 is executed.
Step 107: switching the at least one user terminal from the source cell to the target cell.
And after determining at least one user terminal meeting the preset conditions, switching the at least one user terminal from the source cell to the target cell, namely, providing service for the at least one user terminal by the target cell.
The specific switching method is a mature technology in the field, and the embodiment of the present invention is not described in detail herein.
The embodiment of the invention provides a load balancing optimization method, which comprises the steps of determining a target cell adjacent to a source cell when detecting that a first resource load of the source cell reaches a preset load threshold value, issuing position request information to a plurality of user terminals served by the source cell, receiving a plurality of measurement reports reported by each user terminal, wherein each measurement report comprises first longitude and latitude information of each user terminal, calculating the distance between each user terminal and the source cell according to the first longitude and latitude information and the second longitude and latitude information by determining the second longitude and latitude information of the source cell, determining at least one user terminal meeting preset conditions from the plurality of user terminals according to each distance, and switching the at least one user terminal from the source cell to the target cell. The embodiment of the invention judges the position of the user terminal according to the position information in the measurement report reported by the user terminal, thereby accurately distinguishing the central user and the edge user, having higher measurement precision, further reducing the measurement error and improving the implementation effect of load balancing.
Example two
Referring to fig. 2, a flowchart of steps of a load balancing optimization method provided in an embodiment of the present invention is shown, where the load balancing optimization method may be applied to a base station, and specifically may include the following steps:
step 201: when detecting that a first resource load of a source cell reaches a preset load threshold value, determining a plurality of cells adjacent to the source cell.
The load balancing optimization method provided by the embodiment of the invention can be applied to the base station, and the base station carries out load balancing optimization according to the current resource load of the cell in the coverage area of the base station.
The first resource load is the current resource load of the source cell, and the preset load threshold is the load threshold of the source cell.
Each cell is preset with a corresponding load threshold, and when the resource load of a certain cell reaches or exceeds the load threshold, the network capacity is reduced and the network QoS is influenced.
In the embodiment of the present invention, a cell load detection timer may be preset, and after the timer is turned on, the cell load state may be periodically detected, and a detection scheme for the cell load state is a mature technology in the art, and the embodiment of the present invention is not described in detail herein.
When the detected first resource load of the source cell reaches the preset load threshold value, the base station may determine a plurality of cells adjacent to the source cell according to the position of the central transmitting station of the source cell.
After determining a plurality of cells neighboring the source cell, step 202 is performed.
Step 202: and acquiring a second resource load of each cell.
The base station can detect the load state of the cell under the base station. For example, a detection period may be preset, the load state of the cell in the current base station may be detected according to the detection period, and a specific value of the detection period may be set by a person skilled in the art according to practical experience, which is not limited in this embodiment of the present invention.
After acquiring the second resource load of each cell, step 203 is executed.
Step 203: and taking the cell with the minimum second resource load as the target cell.
Because the cell with the minimum load can bear the access of more user terminals, and the maximization of load balancing optimization can be realized. Therefore, in the embodiment of the present invention, after the load status of each cell under the base station is obtained, the cell with the smallest load may be selected from the multiple cells as the target cell according to the load status of each cell.
After the target cell is determined, step 204 is performed.
Step 204: and issuing the position request information to a plurality of user terminals served by the source cell.
After determining the target cell, the base station may first acquire a plurality of user terminals served by the source cell, that is, a plurality of user terminals access the service acquired by the source cell.
The base station may generate location request information and send the location request information to a plurality of user terminals served by the source cell, and specifically, the base station may add the location request information to rrcconnectionreconfiguration (rrc connection Reconfiguration) and send the location request information to the plurality of user terminals, and request the user terminals to report their located location information.
After issuing the location request information to the plurality of ues served by the source cell, step 205 is further executed.
Step 205: receiving a measurement report reported by each user terminal; wherein each of the measurement reports includes first longitude and latitude information of the user terminal.
The first longitude and latitude information refers to the longitude and latitude where the user terminal is located currently.
The user terminal side is usually provided with a Global Positioning System (GPS), and the first longitude and latitude of the user terminal can be obtained in real time through the GPS, and certainly, the user terminal may also obtain the first longitude and latitude of the user terminal in other manners.
After the ue obtains the first longitude and latitude information, the ue may add the first longitude and latitude information to the measurement report and report the measurement report to the base station.
The base station receives a measurement report reported by each user terminal, wherein the measurement report comprises first longitude and latitude information of the user terminal.
After receiving the measurement report reported by each ue, step 206 is performed.
Step 206: and determining second longitude and latitude information of the source cell.
In the embodiment of the invention, the second longitude and latitude information of the source cell is the longitude and latitude information of the central transmitting station of the source cell.
The base station side prestores detailed information of each cell under the base station, such as cell identification, cell longitude and latitude information and the like, and the base station can acquire second longitude and latitude information of the source cell, namely second longitude and latitude information of a central transmitting station of the source cell, from the prestored information according to the identification of the source cell.
After determining the second longitude and latitude information of the source cell, step 207 is performed.
Step 207: and calculating the distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information.
In the embodiment of the invention, the distance between the user terminal and the source cell is the distance between the user terminal and the central transmitting station of the source cell.
After the first longitude and latitude information of each user terminal and the second longitude and latitude information of the source cell center transmitting station are obtained, the distance between each user terminal and the source cell center transmitting station can be calculated according to the first longitude and latitude information and the second longitude and latitude information.
For example, the longitude and latitude of the user terminal a is a (Ja, Wa), the longitude and latitude of the central transmitting station of the source cell C is C (Jc, Wc), and the distance between the user terminal a and the source cell C may be calculated by referring to the following formula (1):
D＝R*arc cos[cosWa cosWc cos(Ja-Jc)+sinWa sinWc](1)
in the above formula (1), D represents a distance, and R represents a radius of the earth.
And substituting the longitude and latitude of the user terminal A and the longitude and latitude of the source cell C into the formula (1) to calculate and obtain the distance between the user terminal A and the source cell C.
After calculating the distance between each user terminal and the source cell, step 208 is performed.
Step 208: and adding each user terminal to the queue to be switched in sequence according to the sequence of the distances from small to large.
In this embodiment of the present invention, a queue to be switched may be pre-established for a source cell, and after the distance between each user equipment and the source cell is obtained, the distances may be sequentially added to a storage queue in order from small to large, for example, the distances between the user equipment A, B, C and the source cell are respectively: 5m, 3m and 8m, adding the data to the queue to be switched according to the sequence of the distances from small to large: user terminal B, user terminal A, user terminal C.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be construed as the only limitations of the present invention.
After each user terminal is added to the queue to be switched in turn, step 209 is executed.
Step 209: and acquiring the current load value and the target load threshold value of the target cell.
The target load threshold value refers to a preset load threshold value of the target cell, and the current load value refers to a load value of the target cell at the current moment.
A target cell load detection timer may be preset, and after the timer is turned on, the target cell load state may be periodically detected, and a cell load state detection scheme is a mature technology in the art, and the embodiment of the present invention is not described in detail herein.
The load threshold of each cell under the base station is pre-stored at the base station side, and the target load threshold of the target cell can be obtained according to the cell identifier of the target cell.
After acquiring the current load value and the target load threshold value of the target cell, step 210 is performed.
Step 210: and determining the number of the user terminals needing cell switching according to the first resource load, the current load value and the target load threshold value.
After the first resource load, the current load value and the target load threshold value are obtained, the number of user terminals needing cell switching in the source cell can be determined according to the first resource load, the current load value and the target load threshold value and a preset algorithm.
It can be understood that any solution in the prior art that can determine the number of the user terminals that need to perform cell handover may be applied to the embodiment of the present invention, and the embodiment of the present invention is not limited thereto.
After determining the number of user terminals that need to perform cell handover, step 211 is performed.
Step 211: and sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals from small to large.
After determining the number of the user terminals that need to perform cell handover, the corresponding number of user terminals may be sequentially selected from the queue to be handed over according to the order of the distance from small to large, and step 212 is executed.
Step 212: and switching the corresponding number of user terminals from the source cell to the target cell.
In the embodiment of the present invention, after the corresponding number of user terminals are selected, the corresponding number of user terminals are switched from the source cell to the target cell, that is, the target cell provides a service for at least one user terminal.
For example, referring to fig. 3, a schematic diagram of location distance distribution of user terminals according to an embodiment of the present invention is shown, as shown in fig. 3, C1 represents a source cell, C2 represents a target cell, a1 and a2 are user terminals in the C1 cell, after the user terminals report a4 measurement, a handover based on load balancing is triggered, the user terminal (a1) in the source cell is handed over to the target cell C2 to become a user terminal (B1), and load balancing from the source cell to the target cell is completed.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be construed as the only limitations of the present invention.
The specific switching method is a mature technology in the field, and the embodiment of the present invention is not described in detail herein.
The embodiment of the invention provides a load balancing optimization method, which comprises the steps of determining a target cell adjacent to a source cell when detecting that a first resource load of the source cell reaches a preset load threshold value, issuing position request information to a plurality of user terminals served by the source cell, receiving a plurality of measurement reports reported by each user terminal, wherein each measurement report comprises first longitude and latitude information of each user terminal, calculating the distance between each user terminal and the source cell according to the first longitude and latitude information and the second longitude and latitude information by determining the second longitude and latitude information of the source cell, determining at least one user terminal meeting preset conditions from the plurality of user terminals according to each distance, and switching the at least one user terminal from the source cell to the target cell. The embodiment of the invention judges the position of the user terminal according to the position information in the measurement report reported by the user terminal, thereby accurately distinguishing the central user and the edge user, having higher measurement precision, further reducing the measurement error and improving the implementation effect of load balancing.
EXAMPLE III
Referring to fig. 4, a schematic structural diagram of a load balancing optimization apparatus provided in an embodiment of the present invention is shown, which may specifically include:
a target cell determining module 310, configured to determine a target cell adjacent to a source cell when it is detected that a first resource load of the source cell reaches a preset load threshold; a request information sending module 320, configured to issue location request information to a plurality of user terminals served by the source cell; a measurement report receiving module 330, configured to receive a measurement report reported by each ue; each measurement report comprises first longitude and latitude information of the user terminal; a second longitude and latitude information determining module 340, configured to determine second longitude and latitude information of the source cell; a distance calculating module 350, configured to calculate a distance between each user equipment and the source cell according to each first longitude and latitude information and the second longitude and latitude information; a user terminal determining module 360, configured to determine, according to each distance, at least one user terminal that meets a preset condition from the plurality of user terminals; a target cell handover module 370, configured to handover the at least one user terminal from the source cell to the target cell.
Preferably, the target cell determining module 310 includes: a plurality of cell determination submodules for determining a plurality of cells adjacent to the source cell; a second load obtaining submodule, configured to obtain a second resource load of each cell; and the target cell determining submodule is used for taking the cell with the minimum second resource load as the target cell.
Preferably, the method further comprises the following steps: and the user terminal adding module is used for sequentially adding each user terminal to the queue to be switched according to the sequence of the distances from small to large.
Preferably, the user terminal determining module 360 includes: a load threshold obtaining submodule, configured to obtain a current load value and a target load threshold value of the target cell; a user terminal number determining submodule, configured to determine, according to the first resource load, the current load value, and the target load threshold value, the number of user terminals that need to perform cell switching; and the user terminal selection submodule is used for sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals and the sequence of the distances from small to large.
Preferably, the target cell switching module 370 includes: and the target cell switching submodule is used for switching the user terminals with the corresponding number from the source cell to the target cell.
The embodiment of the invention provides a load balancing optimization device, which is used for determining a target cell adjacent to a source cell when detecting that a first resource load of the source cell reaches a preset load threshold value, issuing position request information to a plurality of user terminals served by the source cell, receiving a plurality of measurement reports reported by each user terminal, wherein each measurement report comprises first longitude and latitude information of each user terminal, calculating the distance between each user terminal and the source cell according to the first longitude and latitude information and the second longitude and latitude information by determining the second longitude and latitude information of the source cell, determining at least one user terminal meeting preset conditions from the plurality of user terminals according to each distance, and switching the at least one user terminal from the source cell to the target cell. The embodiment of the invention judges the position of the user terminal according to the position information in the measurement report reported by the user terminal, thereby accurately distinguishing the central user and the edge user, having higher measurement precision, further reducing the measurement error and improving the implementation effect of load balancing.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The load balancing optimization method and the load balancing optimization device provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A load balancing optimization method is applied to a base station, and is characterized by comprising the following steps:
when detecting that a first resource load of a source cell reaches a preset load threshold value, determining a target cell adjacent to the source cell;
issuing location request information to a plurality of user terminals served by the source cell;
receiving a measurement report reported by each user terminal; each measurement report comprises first longitude and latitude information of the user terminal;
determining second longitude and latitude information of the source cell;
calculating the distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information;
determining at least one user terminal meeting preset conditions from a plurality of user terminals according to the distances;
switching the at least one user terminal from the source cell to the target cell.
2. The method of claim 1, wherein the step of determining the target cell adjacent to the source cell comprises:
determining a plurality of cells neighboring the source cell;
acquiring a second resource load of each cell;
and taking the cell with the minimum second resource load as the target cell.
3. The method according to claim 1, further comprising, after the step of calculating the distance between each of the user terminals and the source cell according to each of the first longitude and latitude information and the second longitude and latitude information:
and adding the user terminals to the queue to be switched in sequence according to the sequence of the distances from small to large.
4. The method according to claim 3, wherein the step of determining at least one ue meeting a predetermined condition from among the plurality of ues according to each of the distances comprises:
acquiring a current load value and a target load threshold value of the target cell;
determining the number of user terminals needing cell switching according to the first resource load, the current load value and the target load threshold value;
and sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals from small to large.
5. The method of claim 4, wherein the step of handing over the at least one user terminal from the source cell to the target cell comprises:
and switching the corresponding number of user terminals from the source cell to the target cell.
6. A load balancing optimization apparatus, comprising:
the target cell determining module is used for determining a target cell adjacent to a source cell when detecting that a first resource load of the source cell reaches a preset load threshold value;
a request information sending module, configured to issue location request information to a plurality of user terminals served by the source cell;
a measurement report receiving module, configured to receive a measurement report reported by each ue; each measurement report comprises first longitude and latitude information of the user terminal;
the second longitude and latitude information determination module is used for determining second longitude and latitude information of the source cell;
a distance calculation module, configured to calculate a distance between each user terminal and the source cell according to each first longitude and latitude information and the second longitude and latitude information;
the user terminal determining module is used for determining at least one user terminal which meets the preset conditions from the plurality of user terminals according to the distances;
a target cell switching module, configured to switch the at least one ue from the source cell to the target cell.
7. The apparatus of claim 6, wherein the target cell determination module comprises:
a plurality of cell determination submodules for determining a plurality of cells adjacent to the source cell;
a second load obtaining submodule, configured to obtain a second resource load of each cell;
and the target cell determining submodule is used for taking the cell with the minimum second resource load as the target cell.
8. The apparatus of claim 6, further comprising:
and the user terminal adding module is used for sequentially adding each user terminal to the queue to be switched according to the sequence of the distances from small to large.
9. The apparatus of claim 8, wherein the user terminal determining module comprises:
a load threshold obtaining submodule, configured to obtain a current load value and a target load threshold value of the target cell;
a user terminal number determining submodule, configured to determine, according to the first resource load, the current load value, and the target load threshold value, the number of user terminals that need to perform cell switching;
and the user terminal selection submodule is used for sequentially selecting a corresponding number of user terminals from the queue to be switched according to the number of the user terminals and the sequence of the distances from small to large.
10. The apparatus of claim 9, wherein the target cell handover module comprises:
and the target cell switching submodule is used for switching the user terminals with the corresponding number from the source cell to the target cell.
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