CN108260165B - Method and device for load balancing among sectors - Google Patents
Method and device for load balancing among sectors Download PDFInfo
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- CN108260165B CN108260165B CN201611236385.7A CN201611236385A CN108260165B CN 108260165 B CN108260165 B CN 108260165B CN 201611236385 A CN201611236385 A CN 201611236385A CN 108260165 B CN108260165 B CN 108260165B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
Abstract
The invention relates to a method and a device for balancing load among sectors, wherein the method comprises the following steps: acquiring a load value of a source sector; when the load value of the source sector is larger than the first load threshold, acquiring the load values of all first cooperative sectors of the source sector; if the load values of all the first cooperation sectors are smaller than the second load threshold, increasing the downward inclination angles of the base station antennas of the source sectors, and reducing the downward inclination angles of the base station antennas of all the first cooperation sectors to realize load balance among the sectors; wherein the first loading threshold is greater than the second loading threshold. According to the technical scheme provided by the embodiment of the invention, the coverage area of the base station is controlled by adjusting the downward inclination angle of the antenna of the base station, the adjusting mode is simple and convenient, the load balance among sectors is realized, the frequency spectrum resource utilization rate of each sector is improved, and the service quality of a system is improved.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for load balancing between sectors.
Background
Load is typically defined as the ratio between the occupied resources and all available resources. In a wireless communication network, uneven distribution of users can cause uneven distribution of loads in different sectors, so that the utilization rate of spectrum resources in different sectors is unbalanced, and the utilization rate of spectrum resources in the whole wireless communication network is further influenced. Therefore, a method for improving load distribution is needed, so that loads of sectors are distributed substantially uniformly, thereby improving utilization rate of spectrum resources and improving service quality of a system.
For current mobile cellular systems, there are many ways to achieve load balancing. A Mobility Load Balancing (MLB) technology, which is one of key technologies of Self-Organizing Networks (SON) in a Long Term Evolution (Long Term Evolution, LTE), is mainly implemented by performing forced handover or adjusting handover parameters to handle the problem of uneven Load among a plurality of sectors based on handover. The prior art provides an enhanced load balancing method based on neighbor cell load information, which is characterized in that target cells are subjected to priority ranking through a certain algorithm, load balancing ending thresholds of the target cells are calculated, and a source cell sequentially selects the target cells from a target cell list to carry out load transfer, so that load balancing is realized.
The prior art provides only a rough method for calculating the priority of the target cell, and does not point out in detail how to implement load balancing by load transfer to the target cell. Therefore, the method for balancing the load among the sectors has very important significance.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for balancing load among sectors, which flexibly and conveniently realizes load balancing among sectors by adjusting the downward inclination angle of the antenna of a base station.
To this end, the invention provides a method for load balancing among sectors, comprising the following steps:
acquiring a load value of a source sector;
when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector;
if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors;
wherein the first loading threshold is greater than the second loading threshold.
Optionally, the method further includes:
if the load value of at least one first cooperation sector is larger than the second load threshold and the load value of at least one first cooperation sector is smaller than the second load threshold, selecting the first cooperation sector with the load value smaller than the second load threshold as a first sharing sector to form a first sharing sector set;
selecting a first sharing sector with the highest priority from the first sharing sector set;
and increasing the downward inclination angle of the base station antenna of the source sector and reducing the downward inclination angle of the base station antenna of the first distribution sector with the highest priority.
Optionally, the selecting a sharing sector with the highest priority from the sharing sector set includes:
for each first sharing sector in the first sharing sector set, determining the priority of each first sharing sector one by one according to the load value of the second cooperation sector of each first sharing sector and the load value of each corresponding first sharing sector;
and selecting the first sharing sector with the highest priority according to the priority of each first sharing sector.
Optionally, the determining the priority of each first sharing sector one by one according to the load value of the second cooperation sector of each first sharing sector and the load value of each corresponding first sharing sector includes:
and dividing the sum of the load values of the second cooperation sectors of any first sharing sector by the corresponding load value of the first sharing sector, and calculating the priority of the corresponding first sharing sector.
Optionally, the method further includes:
if the load values of all the first cooperation sectors are greater than the second load threshold and the load value of at least one first cooperation sector is smaller than a third load threshold, selecting the first cooperation sector with the load value smaller than the third load threshold as a second sharing sector to form a second sharing sector set;
selecting a second sharing sector with the highest priority from the second sharing sector set;
increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the second distribution sector with the highest priority;
wherein the first loading threshold is greater than the third loading threshold and greater than the second loading threshold.
Optionally, the method further includes:
if the load values of all the first cooperation sectors are larger than the third load threshold, calculating the priority of all the first cooperation sectors;
selecting the first cooperation sector with the highest priority;
and increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the first cooperation sector with the highest priority.
On the other hand, an embodiment of the present invention further provides an apparatus for load balancing among sectors, including:
the first load acquisition module is used for acquiring a load value of a source sector;
a second load obtaining module, configured to obtain load values of all first cooperative sectors of the source sector when the load value of the source sector is greater than a first load threshold;
an inclination angle adjusting module, configured to increase a downward inclination angle of the base station antenna of the source sector and decrease the downward inclination angle of the base station antenna of all the first cooperative sectors when the load values of all the first cooperative sectors are smaller than a second load threshold, so as to implement load balancing between sectors;
wherein the first loading threshold is greater than the second loading threshold.
The method, the device also includes:
a sharing sector selecting module, configured to select, when there is at least one first cooperation sector whose load value is greater than the second load threshold and at least one first cooperation sector whose load value is less than the second load threshold, the first cooperation sector whose load value is less than the second load threshold as a first sharing sector, so as to form a first sharing sector set;
a priority sorting module, configured to select a first sharing sector with a highest priority from the first sharing sector set;
the tilt angle adjusting module is further configured to increase a downward tilt angle of the base station antenna of the source sector and decrease a downward tilt angle of the base station antenna of the first distribution sector with the highest priority.
Optionally, the prioritization module includes:
a priority calculating unit, configured to determine, for each first sharing sector in the first sharing sector set, a priority of each first sharing sector one by one according to a load value of a second cooperation sector of each first sharing sector and a load value of each corresponding first sharing sector;
and the highest priority selecting unit is used for selecting the first sharing sector with the highest priority according to the priority of each first sharing sector.
Optionally, the priority calculating unit is specifically configured to divide the sum of the load values of the second cooperative sectors of any first sharing sector by the liability value of the corresponding first sharing sector, and calculate the priority of the corresponding first sharing sector.
According to the method and the device for load balancing among sectors, provided by the embodiment of the invention, by obtaining the load value of a source sector, when the source sector is overloaded, a cooperative sector capable of sharing load for the source sector is selected according to the load value of the cooperative sector, and further, by adjusting the downward inclination angle of a base station antenna of the source sector and the downward inclination angle of a base station antenna of the cooperative sector sharing load, the load balancing among sectors is finally realized. According to the technical scheme provided by the embodiment of the invention, the coverage area of the base station is controlled by adjusting the downward inclination angle of the antenna of the base station, the adjusting mode is simple and convenient, the load balance among sectors is realized, the frequency spectrum resource utilization rate of each sector is improved, and the service quality of a system is improved.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic flow chart of a load balancing method between sectors according to an embodiment of the present invention;
fig. 2 is a schematic view of an implementation scenario of the technical solution provided by the embodiment of the present invention;
fig. 3 is a schematic diagram of a base station equipped with an active antenna system in accordance with an embodiment of the present invention;
fig. 4 is a detailed flowchart of a method for load balancing among sectors according to another embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a change situation of an average number of users in a sector after the technical solution provided by the embodiment of the present invention is adopted
Fig. 6 is a schematic diagram of average spectrum utilization in a sector after the technical solution provided by the embodiment of the present invention is adopted;
fig. 7 is a schematic diagram of a framework of an inter-sector load balancing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
With the introduction of Active Antenna System (AAS), we can add one Antenna dimension in the vertical direction. The AAS can divide each vertical antenna element into a plurality of elements without changing the size of the existing antenna, thereby developing the spatial dimension of the Multiple Input Multiple Output (MIMO) technology in the vertical direction. By using the dimension in the vertical direction, new technologies such as vertical beam forming and vertical sector splitting can be realized. The introduction of AAS also makes the adjustment of the base station (eNodeB) antenna downtilt, which can affect the coverage of the eNodeB, very flexible. Therefore, the load balance among sectors can be flexibly and conveniently realized by adaptively adjusting the downward inclination angle of the eNodeB antenna. Based on the load distribution of each sector, the adaptive scheduling of the wireless resources is carried out through the joint among a plurality of sectors, thereby ensuring that no high-load sector occurs.
Based on the above purpose, as shown in fig. 1, an embodiment of the present invention provides a method for load balancing among sectors, where the method includes the following steps:
s101: acquiring a load value of a source sector;
it should be noted that, in the embodiments of the present invention, an inter-sector load balancing apparatus is used as an execution main body, and the apparatus may establish a connection with each eNodeB to adjust a downtilt of an antenna of each eNodeB. Wherein, the source sector refers to a sector to which a load sharing operation is to be performed. As shown in fig. 2, for an application scenario of the embodiment of the present invention, a cell is divided into three sectors, and one cell eNodeB may be equivalent to three sectors eNodeB, where the numbers in the sectors in the figure indicate the numbers of the sectors. As shown in fig. 2, if load sharing needs to be performed on the sector numbered 2, the sector numbered 2 is the source sector, and the load value of the sector numbered 2 is obtained.
S102: when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector;
specifically, the first load threshold is a heavy load threshold, and when the load value of the source sector acquired in step S101 is greater than the heavy load threshold, it indicates that the source sector exceeds the load and needs to be load-shared, and at this time, the load values of all cooperative sectors of the source sector may be acquired. Conversely, if the load value of the source sector is not greater than the heavy load threshold, indicating that the source sector is not overloaded, the source sector need not perform a load balancing operation. It should be noted that, for the source sector, the cooperative sector set thereof is a sector of a neighboring cell within an angle range of an antenna Level (LOS), for example, the cooperative sector set of sector 0 is {10,13,14,17} and the cooperative sector set of sector 10 is {0,2,6,14} in fig. 2; when the source sector is sector 0, the first cooperation sectors thereof are sector 10, sector 13, sector 14 and sector 17, and thus the load values of all the first cooperation sectors of the source sector can be obtained.
S103: if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors; wherein the first loading threshold is greater than the second loading threshold.
Specifically, the second load threshold is a light load threshold, and if the load values of all the first cooperative sectors acquired in step S102 are smaller than the light load threshold, it indicates that the load values of all the first cooperative sectors of the source sector are smaller, and therefore, all the first cooperative sectors of the source sector can be used as sharing sectors. The sharing sector refers to a sector participating in load sharing of the source sector. The set of shared sectors is a set of shared sectors. Furthermore, load balancing among sectors can be realized by increasing the downward inclination angle of the base station antenna of the source sector, that is, reducing the coverage area of the base station antenna of the source sector, and decreasing the downward inclination angles of the base station antennas of all the first cooperation sectors, that is, increasing the downward inclination angle of the base station antenna of the first cooperation sector. Wherein the angle of each increase or decrease of the down tilt angle may be 1 °. After each change of the downtilt angle of the base station antenna, the above steps S1-S3 may be repeated again until inter-sector load balancing is achieved.
As shown in fig. 3, a schematic diagram of an eNodeB equipped with AAS is shown. Compared to the conventional eNodeB, which was not originally equipped with AAS, both are antenna arrays 31 with three orientations, thereby dividing a cell into three sectors, so that one cell eNodeB can be equivalent to three sector enodebs. Unlike the one-dimensional antenna array 33 of a conventional eNodeB, the antenna array 31 of an eNodeB equipped with AAS is two-dimensional, as shown in fig. 3, one antenna array is composed of 4 rows and 8 columns of antenna elements 32. A conventional antenna port corresponds to a column of antenna elements 32, and each antenna element 32 may be regarded as an antenna port for the AAS, so that the Electrical Downtilt (Electrical Downtilt) of the eNodeB antenna may be adjusted by configuring different amplitudes and phases for different antenna elements 32. Compared with the adjustment of a mechanical downward inclination angle, the adjustment of an electrical downward inclination angle is more flexible and convenient, thereby providing a good foundation for the method for adjusting the downward inclination angle of the base station antenna to realize the load balancing.
Referring to fig. 4, a sector 0 is taken as an example to describe in detail the technical solution provided by the embodiment of the present invention. Step (I): acquiring the load value of the sector 0, comparing the load value of the source sector with a heavy load threshold, and judging whether the following formula is met:
L0＞Th1， (1)
in the formula L0Represents the load value of source sector 0; th1Defined as a heavy load threshold, a value of 0.9 is proposed here. If equation (1) holds, it indicates that source sector 0 is a heavily loaded sector. As mentioned before, the sourceThe set of cooperating sectors of sector 0 is T0＝{10,13,14,17}，T0May be represented as shown in table 1:
TABLE 1
| Sector number 0(j) | 0(1) | 0(2) | 0(3) | 0(4) |
| Sector numbering | 10 | 13 | 14 | 17 |
Step (two) of calculating a cooperative sector set T of the source sector 00Load values of all cooperating sectors in {10,13,14,17 }. If the load values of all the cooperative sectors in the cooperative sector set are less than the light load threshold, the following formula is satisfied:
L0(j)＜Th2 j＝{1,2,3,4}， (2)
it indicates that all the cooperative sectors are sharing sectors, the source sector eNodeB antenna downtilt angle is increased by one degree, and all the cooperative sector eNodeB antenna downtilts thereof are decreased by one degree. Th2Representing a light load threshold, here a value of 0.3 is suggested. And then returning to the step (one).
According to the inter-sector load balancing method provided by the embodiment of the invention, by acquiring the load value of the source sector, when the source sector is overloaded, the cooperative sector capable of sharing the load for the source sector is selected according to the load value of the cooperative sector, and further, by adjusting the downward inclination angle of the base station antenna of the source sector and the downward inclination angle of the base station antenna of the cooperative sector sharing the load, the inter-sector load balancing is finally realized. According to the technical scheme provided by the embodiment of the invention, the coverage area of the base station is controlled by adjusting the downward inclination angle of the antenna of the base station, the adjusting mode is simple and convenient, the load balance among sectors is realized, the frequency spectrum resource utilization rate of each sector is improved, and the service quality of a system is improved.
On the basis of the foregoing embodiment, after acquiring load values of all first cooperative sectors in step S102, the method for load balancing among sectors provided in the embodiment of the present invention further includes:
S103A, if the load value of at least one first cooperation sector is larger than the second load threshold and the load value of at least one first cooperation sector is smaller than the second load threshold, selecting the first cooperation sector with the load value smaller than the second load threshold as a first sharing sector to form a first sharing sector set;
S104A, selecting a first distributing sector with the highest priority from the first distributing sector set;
specifically, for each first sharing sector in the first sharing sector set, the priority of each first sharing sector is determined one by one according to the load value of the second cooperation sector of each first sharing sector and the load value of each corresponding first sharing sector; and selecting the first sharing sector with the highest priority according to the priority of each first sharing sector. The priority of each first allocation sector may be calculated as follows: and dividing the sum of the load values of the second cooperation sectors of any first sharing sector by the corresponding load value of the first sharing sector, and calculating the priority of the corresponding first sharing sector.
And S105, 105A, increasing the downward inclination angle of the base station antenna of the source sector and reducing the downward inclination angle of the base station antenna of the first distribution sector with the highest priority.
Referring to fig. 4, specifically, if there is a loading value of the first cooperative sector greater than the light loading threshold, for example, a possible situation is as follows:
L0(j)＜Th2 j＝{1,3,4}， (3)
L0(2)＞Th2， (4)
that is, if the load value of the first cooperation sector is smaller than the light load threshold, those first cooperation sectors {10,14,17} with the load value smaller than the light load threshold are selected as the first sharing sector set, and for each sharing sector in the first sharing sector set, their respective second cooperation sector sets are established, and the priority of each first sharing sector is calculated according to the following formula:
taking sector 10 as an example, the second set of cooperating sectors is T10When the sector 10 has a priority of {0,2,6,14}, as indicated by the dashed-oblique lines in fig. 2
The priorities of other first sharing sectors can be obtained as well, and the head table to the tail table of the sharing sector set are recorded in descending order according to the priorities, and one possible situation is that
ρ14＞ρ10＞ρ17， (7)
That is to say
ρ0(1)＞ρ0(2)＞ρ0(3)， (8)
Then the first set of split sectors B of source sector 0 at this time0As shown in table 2:
TABLE 2
| Sector number 0(j) | 0(1) | 0(2) | 0(3) |
| Sector numbering | 14 | 10 | 17 |
Then, the antenna downtilt angle of the first (highest priority) sector eNodeB is decreased by one degree, and the antenna downtilt angle of the source sector eNodeB is increased by one degree, and the procedure returns to step (one).
On the basis of the foregoing embodiment, after acquiring load values of all first cooperative sectors in step S102, the method for load balancing among sectors provided in the embodiment of the present invention further includes:
S103B, if the load values of all the first cooperation sectors are larger than the second load threshold and the load value of at least one first cooperation sector is smaller than a third load threshold, selecting the first cooperation sector with the load value smaller than the third load threshold as a second distribution sector to form a second distribution sector set; wherein the first loading threshold is greater than a third loading threshold that is greater than the second loading threshold;
specifically, the first load threshold may be a heavy load threshold, the second load threshold is a light load threshold, and the third load threshold is a medium load threshold.
S104B, selecting a second distribution sector with the highest priority from the second distribution sector set;
and S105, 105B, increasing the downward inclination angle of the base station antenna of the source sector and reducing the downward inclination angle of the base station antenna of the second distribution sector with the highest priority.
Referring to fig. 4, if the load values of all the first cooperative sectors are greater than the light load threshold, the load values of all the first cooperative sectors of the source sector 0 are compared with the medium load threshold, if there are first cooperative sectors having load values less than the medium load threshold, these sectors are regarded as second sharing sectors, and the priorities of the second sharing sectors are calculated, and a second sharing sector set B of the source sector 0 is established0Specifically, the process of calculating the priority may refer to step (two), then decrease the antenna downtilt angle of the sector eNodeB of the second sectorized set header (highest priority) by one degree, increase the antenna downtilt angle of the source sector eNodeB by one degree, and continue to return to step (one).
On the basis of the above embodiment, after acquiring the load values of all the first cooperative sectors in step S102, the method further includes:
S103C, if the load values of all the first cooperation sectors are all larger than the third load threshold, calculating the priority of all the first cooperation sectors;
S104C, selecting the first cooperation sector with the highest priority;
S105C, increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the first cooperation sector with the highest priority.
Referring to fig. 4, if there is no first cooperative sector having a load value less than a medium load threshold, a first cooperative sector set T of the source sector 0 is calculated0Priority of all first cooperative sectors in {10,13,14,17}, as shown in the following equation:
then recording the head to tail of the third distribution sector set according to descending priority, wherein one possible case is
ρ14＞ρ10＞ρ17＞ρ13， (10)
Then third sectorized sector set B of source sector 0 at this time0As shown in table 3:
TABLE 3
| Sector number 0(j) | 0(1) | 0(2) | 0(3) | 0(4) |
| Sector numbering | 14 | 10 | 17 | 13 |
And then, reducing the antenna downward inclination angle of the third sharing sector set head (with the highest priority) sector eNodeB by one degree, increasing the antenna downward inclination angle of the source sector eNodeB by one degree, and returning to the step (I).
It is specifically stated herein that when the load value of the source sector is greater than the heavy load threshold in the embodiment of the present invention, two thresholds, namely, the light load threshold and the medium load threshold, are used in the load balancing process. Considering the requirements in the actual system, if the system requires low implementation complexity and low equalization accuracy, the two thresholds may be combined into one threshold, for example, only the light load threshold is reserved; conversely, if the system has high requirement for the accuracy of the balance and the system can also achieve higher complexity, more than two thresholds may be set, for example, a fourth load threshold may be added between the light load threshold and the medium load threshold.
The technical scheme provided by the embodiment of the invention is subjected to effect verification.
Fig. 5 shows a variation of the average number of users in a sector after the inter-sector load balancing method provided by the embodiment of the present invention is adopted. It can be seen that, with the technical solution provided by the embodiment of the present invention, the average number of users in each sector tends to be equal, thereby achieving load balancing.
As shown in fig. 6, the average spectrum utilization rate of the sector is shown, and it can be seen that, after the inter-sector load balancing method provided in this embodiment is adopted, the average spectrum utilization rate of the sector is improved due to the effect of load balancing, and resource waste is avoided.
In summary, according to the technical solution provided by the embodiment of the present invention, the downtilt angle of the sector base station antenna is adjusted according to the load condition of the source sector and the load condition of the first cooperative sector, so as to achieve the purpose of load balancing, and when the priority of the first cooperative sector is calculated, the load condition of the second cooperative sector of each first cooperative sector is fully considered, thereby further improving the load balancing effect. Furthermore, by setting a plurality of load thresholds, the load balancing precision is improved.
On the other hand, as shown in fig. 7, an embodiment of the present invention further provides an apparatus for load balancing among sectors, where the apparatus includes: a first load obtaining module 71, a first load obtaining module 72 and an inclination angle adjusting module which are connected in sequence;
the first load obtaining module 71 is configured to obtain a load value of a source sector;
the first load obtaining module 72 is configured to obtain load values of all first cooperative sectors of the source sector when the load value of the source sector is greater than a first load threshold;
the tilt angle adjusting module 73 is configured to increase the downward tilt angle of the base station antenna of the source sector and decrease the downward tilt angle of the base station antenna of all the first cooperative sectors when the load values of all the first cooperative sectors are smaller than a second load threshold, so as to implement load balancing between sectors; wherein the first loading threshold is greater than the second loading threshold.
Specifically, the first load obtaining module 71 obtains a load value of the source sector; when the load value of the source sector is greater than the first load threshold, the first load obtaining module 72 obtains the load values of all the first cooperative sectors of the source sector; when the load values of all the first cooperative sectors are smaller than the second load threshold, the tilt angle adjustment module 73 increases the downtilt angles of the base station antennas of the source sector and decreases the downtilt angles of the base station antennas of all the first cooperative sectors to realize load balancing among the sectors; wherein the first loading threshold is greater than the second loading threshold.
According to the inter-sector load balancing device provided by the embodiment of the invention, by acquiring the load value of the source sector, when the source sector is overloaded, the cooperative sector capable of sharing the load for the source sector is selected according to the load value of the cooperative sector, and further, the inter-sector load balancing can be finally realized by adjusting the downward inclination angle of the base station antenna of the source sector and the downward inclination angle of the base station antenna of the cooperative sector sharing the load. According to the technical scheme provided by the embodiment of the invention, the coverage area of the base station is controlled by adjusting the downward inclination angle of the antenna of the base station, the adjusting mode is simple and convenient, the load balance among sectors is realized, the frequency spectrum resource utilization rate of each sector is improved, and the service quality of a system is improved.
Optionally, the apparatus for load balancing among sectors provided in the embodiment of the present invention further includes:
a sharing sector selecting module, configured to select, when there is at least one first cooperation sector whose load value is greater than the second load threshold and at least one first cooperation sector whose load value is less than the second load threshold, the first cooperation sector whose load value is less than the second load threshold as a first sharing sector, so as to form a first sharing sector set;
a priority sorting module, configured to select a first sharing sector with a highest priority from the first sharing sector set;
the tilt angle adjusting module 73 is further configured to increase a downtilt angle of the base station antenna of the source sector, and decrease a downtilt angle of the base station antenna of the first distribution sector with the highest priority.
Optionally, the prioritization module includes:
a priority calculating unit, configured to determine, for each first sharing sector in the first sharing sector set, a priority of each first sharing sector one by one according to a load value of a second cooperation sector of each first sharing sector and a load value of each corresponding first sharing sector;
and the highest priority selecting unit is used for selecting the first sharing sector with the highest priority according to the priority of each first sharing sector.
Optionally, the priority calculating unit is specifically configured to divide the sum of the load values of the second cooperative sectors of any first sharing sector by the liability value of the corresponding first sharing sector, and calculate the priority of the corresponding first sharing sector.
Optionally, the sharing sector selecting module is further configured to select, when the load values of all the first cooperation sectors are greater than the second load threshold and there is at least one load value of the first cooperation sector smaller than a third load threshold, the first cooperation sector having a load value smaller than the third load threshold as a second sharing sector, so as to form a second sharing sector set;
the priority sorting module is further configured to select a second sharing sector with the highest priority from the second sharing sector set;
the tilt angle adjusting module 73 is further configured to increase a downtilt angle of the base station antenna of the source sector, and decrease a downtilt angle of the base station antenna of the second distribution sector with the highest priority;
wherein the first loading threshold is greater than the third loading threshold and greater than the second loading threshold.
Optionally, the priority calculating unit is further configured to calculate the priorities of all the first cooperative sectors when the load values of all the first cooperative sectors are greater than the third load threshold;
the highest priority selection unit is further configured to select the first cooperative sector with the highest priority;
the tilt angle adjusting module 73 is further configured to increase a downtilt angle of the base station antenna of the source sector, and decrease a downtilt angle of the base station antenna of the first cooperation sector with the highest priority.
For the device embodiment of load balancing among sectors corresponding to the method, since the device embodiment is basically similar to the method embodiment, and the achieved technical effect is also the same as the effect of the method embodiment, the description is relatively simple, and relevant points can be referred to the partial description of the method embodiment.
In another aspect, as shown in fig. 8, an embodiment of the present invention further provides an electronic device, which may be the apparatus in the foregoing embodiment, where the electronic device includes at least one processor (processor)81, a communication Interface (Communications Interface)82, at least one memory (memory)83, and a bus 84, where the processor 81, the communication Interface 82, and the memory 83 complete mutual communication through the bus 84. The communication interface 82 may be used for information transfer between the electronic device and a base station. Processor 81 may call logic instructions in memory 83 to perform the methods described in the above embodiments, including, for example: acquiring a load value of a source sector; when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector; if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors; wherein the first loading threshold is greater than the second loading threshold.
In addition, the logic instructions in the memory 83 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the methods provided by the above-mentioned method embodiments, for example, including: acquiring a load value of a source sector; when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector; if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors; wherein the first loading threshold is greater than the second loading threshold.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: acquiring a load value of a source sector; when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector; if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors; wherein the first loading threshold is greater than the second loading threshold.
It is 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. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention is not limited to any single aspect, nor is it limited to any single embodiment, nor is it limited to any combination and/or permutation of these aspects and/or embodiments. Moreover, each aspect and/or embodiment of the present invention may be utilized alone or in combination with one or more other aspects and/or embodiments thereof. In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A method for inter-sector load balancing, comprising:
acquiring a load value of a source sector;
when the load value of the source sector is larger than a first load threshold, acquiring the load values of all first cooperative sectors of the source sector;
if the load values of all the first cooperative sectors are smaller than a second load threshold, increasing the downward inclination angles of the base station antennas of the source sector, and reducing the downward inclination angles of the base station antennas of all the first cooperative sectors to realize load balance among the sectors;
wherein the first loading threshold is greater than the second loading threshold;
the method further comprises the following steps:
if the load value of at least one first cooperation sector is larger than the second load threshold and the load value of at least one first cooperation sector is smaller than the second load threshold, selecting the first cooperation sector with the load value smaller than the second load threshold as a first sharing sector to form a first sharing sector set;
selecting a first sharing sector with the highest priority from the first sharing sector set;
increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the first distribution sector with the highest priority;
the method further comprises the following steps:
if the load values of all the first cooperation sectors are greater than the second load threshold and the load value of at least one first cooperation sector is smaller than a third load threshold, selecting the first cooperation sector with the load value smaller than the third load threshold as a second sharing sector to form a second sharing sector set;
selecting a second sharing sector with the highest priority from the second sharing sector set;
increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the second distribution sector with the highest priority;
wherein the first loading threshold is greater than the third loading threshold and greater than the second loading threshold.
2. The method of claim 1, wherein the selecting the shared sector with the highest priority from the shared sector set comprises:
for each first sharing sector in the first sharing sector set, determining the priority of each first sharing sector one by one according to the load value of the second cooperation sector of each first sharing sector and the load value of each corresponding first sharing sector;
and selecting the first sharing sector with the highest priority according to the priority of each first sharing sector.
3. The method of claim 2, wherein the determining the priority of each first sectorial sector one by one according to the load value of the second cooperation sector of each first sectorial sector and the load value of the corresponding respective first sectorial sector comprises:
and dividing the sum of the load values of the second cooperation sectors of any first sharing sector by the load value of the corresponding first sharing sector to calculate the priority of the corresponding first sharing sector.
4. The method of claim 1, further comprising:
if the load values of all the first cooperation sectors are larger than the third load threshold, calculating the priority of all the first cooperation sectors;
selecting the first cooperation sector with the highest priority;
and increasing the downward inclination angle of the base station antenna of the source sector, and reducing the downward inclination angle of the base station antenna of the first cooperation sector with the highest priority.
5. An apparatus for inter-sector load balancing, comprising:
the first load acquisition module is used for acquiring a load value of a source sector;
a second load obtaining module, configured to obtain load values of all first cooperative sectors of the source sector when the load value of the source sector is greater than a first load threshold;
an inclination angle adjusting module, configured to increase a downward inclination angle of the base station antenna of the source sector and decrease the downward inclination angle of the base station antenna of all the first cooperative sectors when the load values of all the first cooperative sectors are smaller than a second load threshold, so as to implement load balancing between sectors;
wherein the first loading threshold is greater than the second loading threshold;
the device further comprises:
a sharing sector selecting module, configured to select, when there is at least one first cooperation sector whose load value is greater than the second load threshold and at least one first cooperation sector whose load value is less than the second load threshold, the first cooperation sector whose load value is less than the second load threshold as a first sharing sector, so as to form a first sharing sector set;
a priority sorting module, configured to select a first sharing sector with a highest priority from the first sharing sector set;
the tilt angle adjusting module is further configured to increase a downward tilt angle of the base station antenna of the source sector and decrease a downward tilt angle of the base station antenna of the first distribution sector with the highest priority;
the sharing sector selecting module is further configured to select, when the load values of all the first cooperation sectors are greater than the second load threshold and there is at least one load value of the first cooperation sector smaller than a third load threshold, the first cooperation sector having a load value smaller than the third load threshold as a second sharing sector, so as to form a second sharing sector set;
the priority sorting module is further configured to select a second sharing sector with the highest priority from the second sharing sector set;
the tilt angle adjusting module is further configured to increase a downtilt angle of the base station antenna of the source sector and decrease a downtilt angle of the base station antenna of the second distribution sector with the highest priority;
wherein the first loading threshold is greater than the third loading threshold and greater than the second loading threshold.
6. The apparatus of claim 5, wherein the prioritization module comprises:
a priority calculating unit, configured to determine, for each first sharing sector in the first sharing sector set, a priority of each first sharing sector one by one according to a load value of a second cooperation sector of each first sharing sector and a load value of each corresponding first sharing sector;
and the highest priority selecting unit is used for selecting the first sharing sector with the highest priority according to the priority of each first sharing sector.
7. The apparatus according to claim 6, wherein the priority calculating unit is specifically configured to calculate the priority of the corresponding first allocation sector by dividing the sum of the load values of the second cooperation sectors of any first allocation sector by the load value of the corresponding first allocation sector.
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| CN1910949A (en) * | 2003-12-11 | 2007-02-07 | 高通股份有限公司 | Method and apparatus for conveying sector load information to mobile stations |
| CN102625322A (en) * | 2012-02-27 | 2012-08-01 | 北京邮电大学 | Multi-mode intelligent configurable method for implementing optimization of wireless network |
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| CN102547860B (en) * | 2012-03-02 | 2015-07-22 | 中兴通讯股份有限公司 | Load balancing method and system for multi-band network |
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| CN1910949A (en) * | 2003-12-11 | 2007-02-07 | 高通股份有限公司 | Method and apparatus for conveying sector load information to mobile stations |
| CN1758804A (en) * | 2004-10-10 | 2006-04-12 | 中兴通讯股份有限公司 | Method of sector loading balance in time-division group network system |
| CN102625322A (en) * | 2012-02-27 | 2012-08-01 | 北京邮电大学 | Multi-mode intelligent configurable method for implementing optimization of wireless network |
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