CN108541022B - Method and device for realizing network load balance - Google Patents
Method and device for realizing network load balance Download PDFInfo
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- CN108541022B CN108541022B CN201710119974.5A CN201710119974A CN108541022B CN 108541022 B CN108541022 B CN 108541022B CN 201710119974 A CN201710119974 A CN 201710119974A CN 108541022 B CN108541022 B CN 108541022B
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Abstract
The invention provides a method and a device for realizing network load balancing, relates to the technical field of communication, and aims to improve the utilization rate of wireless resources. The method for realizing network load balance comprises the following steps: acquiring the load of a source cell; comparing the load of the source cell with a preset threshold to obtain a judgment result; if the judgment result shows that the load of the source cell is greater than the preset threshold, acquiring a network coverage mode of the source cell; if the network coverage mode indicates that the source cell is a single-layer network coverage area, adjusting the load of the source cell by using a same-frequency Mobile Load Balancing (MLB) function; and if the network coverage mode indicates that the source cell is a multi-layer network coverage area, cooperatively adjusting the load of the source cell by utilizing a load balancing LB function and a mobility load balancing MLB function. The invention is mainly used in wireless technology.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for implementing network load balancing.
Background
In an LTE (Long term evolution) network, users occupy radio resources for signaling and data transmission. The wireless resources are limited, and as the number of LTE users increases and wireless services become more active, the load of the network becomes more severe. In areas where users are concentrated, a phenomenon of load imbalance may occur: the load of the service cell is too high, the user experience in the cell cannot be met, and the cell capacity and the QoS (Quality of service) are affected; and the load of the adjacent cell is low or normal, and the spare resources can be provided for the users of the service cell to use. Therefore, a load balancing means is required to be adopted in time, the problem of performance damage caused by overhigh load is solved, the load among cells is balanced, and the maximum utilization rate of wireless resources is realized.
Currently, there are three main load balancing approaches for LTE networks: CA (Carrier Aggregation), LB (Load Balancing), and MLB (Mobility Load Balancing).
Wherein, CA refers to: the terminal supporting carrier aggregation simultaneously transmits and receives data on a plurality of component carriers. Flexible scheduling can be performed on different member carriers, load balancing efficiency is improved, and air interface resource utilization rate is improved; LB means: selecting proper users from a high-load service cell to migrate to a low-load adjacent cell to realize load balance among cells; MLB means: and adjusting parameters to ensure that the user is transferred from the high-load service cell to the low-load adjacent cell, thereby realizing load balance among the cells.
The three technical means are different from each other in main application scenes: the CA is applied to a multi-band overlapping coverage area and requires that the terminal has the capability of supporting carrier aggregation; both LB and MLB balance the load by changing the user residence, both techniques being transparent to the terminal.
There are abundant technical studies and application schemes for CA, LB and MLB. However, networking conditions of the existing network scene are complex, and maximum gain may not be obtained by applying a single load balancing means. Therefore, under the current network scene, the technical means are cooperatively applied to balance the load between the carriers/cells, and the aim of maximizing the utilization rate of wireless resources is achieved. But a multi-means cooperative effective implementation scheme is not available at present.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for implementing network load balancing, so as to improve the utilization rate of wireless resources.
In order to solve the above technical problem, the present invention provides a method for implementing network load balancing, including:
acquiring the load of a source cell;
comparing the load of the source cell with a preset threshold to obtain a judgment result;
if the judgment result shows that the load of the source cell is greater than the preset threshold, acquiring a network coverage mode of the source cell;
if the network coverage mode indicates that the source cell is a single-layer network coverage area, adjusting the load of the source cell by using a same-frequency Mobile Load Balancing (MLB) function;
and if the network coverage mode indicates that the source cell is a multi-layer network coverage area, cooperatively adjusting the load of the source cell by utilizing a load balancing LB function and a mobility load balancing MLB function.
Wherein, if the network coverage mode indicates that the source cell is a multi-layer network coverage area, the step of cooperatively adjusting the load of the source cell by using a load balancing LB function and a mobility load balancing MLB function includes:
adjusting the load of the source cell by using a load balancing LB function;
acquiring the load of the source cell according to a preset first time interval;
starting from a first sampling time, if the load of the source cell obtained at the first sampling time is greater than the preset threshold, timing the time that the load of the source cell is greater than the preset threshold to obtain a first time;
if the first time exceeds a first preset value and the reduction degree of the source cell load can not meet preset requirements at continuous M sampling times, adjusting the load of the source cell by using a pilot frequency Mobile Load Balancing (MLB) function;
wherein M is a natural number.
Wherein after the step of adjusting the load of the source cell by using the inter-frequency Mobility Load Balancing (MLB) function, the method further comprises:
acquiring the load of the source cell according to a preset second time interval;
starting from the first sampling time, if the load of the source cell obtained at the second sampling time is greater than the preset threshold, timing the time that the load of the source cell is greater than the preset threshold to obtain a second time;
if the second time exceeds a second preset value and a proper adjacent cell cannot be selected, or if the second time exceeds the second preset value and the reduction degree of the source cell load at continuous N sampling times cannot meet preset requirements, adjusting the load of the source cell by using a same-frequency Mobile Load Balancing (MLB) function;
wherein N is a natural number.
Wherein the method further comprises:
and if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold, and when a parameter backspacing condition is met, backing off the cell individual offset CIO of the different-frequency MLB.
Wherein after the step of adjusting the load of the source cell by using the intra-frequency mobility load balancing MLB function, the method further comprises:
and when the parameter rollback condition is met, performing parameter rollback.
Wherein the performing parameter fallback comprises:
and firstly backing the individual cell offset CIO of the same-frequency MLB, and then backing the individual cell offset CIO of the different-frequency MLB.
Wherein, if the network coverage mode indicates that the source cell is a single-layer network coverage area, after the step of adjusting the load of the source cell by using the same-frequency mobility load balancing MLB function, the method further comprises:
and when the parameter backspacing condition is met, backing the cell individual offset CIO of the MLB with the same frequency.
In a second aspect, the present invention provides an apparatus for implementing network load balancing, including:
the first acquisition module is used for acquiring the load of a source cell;
the comparison module is used for comparing the load of the source cell with a preset threshold to obtain a judgment result;
a second obtaining module, configured to obtain a network coverage mode of the source cell if the determination result indicates that the load of the source cell is greater than the preset threshold;
a first adjusting module, configured to adjust a load of the source cell by using a same-frequency Mobility Load Balancing (MLB) function if the network coverage mode indicates that the source cell is a single-layer network coverage area;
and a second adjusting module, configured to cooperatively adjust the load of the source cell by using a load balancing LB function and a mobility load balancing MLB function if the network coverage mode indicates that the source cell is a multi-layer network coverage area.
The first obtaining module is further configured to obtain the load of the source cell according to a predetermined first time interval; the second adjustment module includes:
the first adjusting submodule is used for adjusting the load of the source cell by utilizing a load balancing LB function;
a first timing sub-module, configured to start from a first sampling time, and if the load of the source cell obtained at the first sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a first time;
a second adjusting submodule, configured to adjust the load of the source cell by using a pilot frequency mobility load balancing MLB function if the first time exceeds a first preset value and the decrease degree of the load of the source cell at consecutive M sampling times cannot meet a preset requirement;
wherein M is a natural number.
The first obtaining module is further configured to obtain the load of the source cell according to a predetermined second time interval; the second adjustment module further comprises:
a second timing submodule, configured to start from a first sampling time, and if the load of the source cell obtained at a second sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a second time;
a third adjusting submodule, configured to adjust the load of the source cell by using a same-frequency mobility load balancing MLB function if the second time exceeds a second preset value and a suitable neighboring cell cannot be selected, or if the second time exceeds the second preset value and the reduction degree of the load of the source cell at N consecutive sampling times cannot meet a preset requirement;
wherein N is a natural number.
Wherein the apparatus further comprises:
and the first parameter backspacing module is used for backspacing the cell individual offset CIO of the inter-frequency MLB when the parameter backspacing condition is met if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold.
Wherein the apparatus further comprises:
and the second parameter rollback module is used for performing parameter rollback when the parameter rollback condition is met.
The second parameter rollback module is specifically configured to rollback the cell individual offset CIO of the intra-frequency MLB first and then rollback the cell individual offset CIO of the inter-frequency MLB.
Wherein the apparatus further comprises:
and the third parameter backspacing module is used for backspacing the cell individual offset CIO of the MLB with the same frequency when the parameter backspacing condition is met.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the invention, when the load of the source cell exceeds the preset threshold, the load of the source cell can be coordinated and adjusted by utilizing the MLB function or utilizing the LB and MLB functions according to the network mode of the source cell, so that the load of the source cell can be coordinated and adjusted by utilizing a plurality of adjustment modes, the load among the cells can be more effectively balanced, and the utilization rate of wireless resources can be improved.
Drawings
Fig. 1 is a flowchart of a method for implementing network load balancing according to a first embodiment of the present invention;
fig. 2 is a flowchart of a method for implementing network load balancing according to a second embodiment of the present invention;
FIG. 3 is a diagram illustrating a detailed process of step 205 according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of an apparatus for implementing network load balancing according to a third embodiment of the present invention;
fig. 5 is a structural diagram of an apparatus for implementing network load balancing according to a third embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The scenarios of wireless networks are mainly classified into 3 types: the method comprises the following steps of common-frequency adjacent coverage scenes, pilot-frequency common coverage scenes and F-D layered/macro-micro networking scenes. When the load of the service cell is too high, the 3 types of high load scenes are analyzed as follows:
one and same frequency adjacent coverage scene
If LB is applied in the scene, because the switching user is located in the switching band of two adjacent cells, the ping-pong switching is easily generated after the user in the service cell is switched to the adjacent cell. It is also contemplated to mitigate ping-pong handover phenomena with an anti-ping-pong strategy, but this strategy may affect the mobility of the user. Therefore, in this scenario, the LB application is not effective; if the MLB is adopted in the scene, the switching zone is moved to a high-load cell by adjusting the switching parameters, so that the user is prompted to switch to a low-load cell, and the switching parameters are adjusted in pairs, so that the non-switching can be effectively prevented, and the mobility of the user is ensured; this scenario is mainly single-layer network coverage, and CA cannot be applied either.
Two, different frequency same coverage scene
If the user is selected to switch to the neighboring cell by applying LB, the non-handover can be effectively prevented because the neighboring cell signals are strong. The LB effect is obvious, and the load balance among cells can be realized. If the MLB is applied, load balancing among cells can be realized by adjusting the handover parameters. But because MLB cannot achieve accurate selection for users, it is not as effective as LB; the multi-band is covered, the CA function can be started, and the load balance of the two carriers is realized.
Three, F-D hierarchical/macro-micro networking scene
When the load of the D frequency band is too high, the load of the F frequency band cell is low: if LB is applied to select the user in D frequency band cell to switch to F frequency band cell, and F and D are covered at the moment, the signal of F frequency band cell is strong, so that non-switching can be effectively prevented. The LB effect is obvious, and the load balance among cells can be realized. If the MLB is applied, part of edge users are switched to the adjacent cells by adjusting the switching parameters, so that the load balance among the cells can be realized. But because MLB cannot achieve accurate selection for users, it is not as effective as LB; and multi-band coverage can start CA to realize load balance.
When the load of the F frequency band cell is too high, the load of the D frequency band cell is low: when LB is considered, the switching threshold of LB must be reduced, at this time, although the user can be selected to move to the low-load D frequency range cell, because the signal intensity of F frequency range is due to the D frequency range cell, the user is easy to have ping-pong switching back; if a ping-pong prevention strategy is adopted, the mobility of the user is influenced. Therefore, in this scenario, the LB application is not effective. If the MLB is applied, the switching band D frequency band cell is moved by adjusting the switching parameters, so that the user switching is promoted, the non-switching can be effectively prevented, and the MLB has an obvious effect on load balance. In this scenario, since users are mostly concentrated on the edge of the D band cell, it is difficult to trigger CA of the D + F band.
In summary, each of the three technologies has an application scenario, and the problem of too high load of a serving cell in a specific scenario is solved. For the existing network, the problems of high load and unbalanced load in all scenes cannot be solved by a single technology. Therefore, the scheme provides an application scheme for cooperation of the MLB and the LB to take effect, and load balance under all wireless network scenes is achieved.
Example one
As shown in fig. 1, a method for implementing network load balancing according to a first embodiment of the present invention includes:
In the embodiment of the present invention, the load of the source cell may be periodically acquired according to a certain period.
And 102, comparing the load of the source cell with a preset threshold to obtain a judgment result.
Wherein, the preset threshold can be set arbitrarily.
In the embodiment of the invention, the network coverage mode of the source cell comprises multi-layer network coverage and single-layer network coverage. Wherein the network coverage mode can be obtained by means of user measurement and the like.
And 104, if the network coverage mode indicates that the source cell is a single-layer network coverage area, adjusting the load of the source cell by using a same-frequency MLB function.
Specifically, here, a suitable (e.g., good signal quality, low load, etc.) neighboring cell is selected for the source cell, and the handover parameter between cell pairs is adjusted to perform load migration.
And 105, if the network coverage mode indicates that the source cell is a multi-layer network coverage area, cooperatively adjusting the load of the source cell by using an LB function and an MLB function.
It can be seen from the above that, in the embodiment of the present invention, when the load of the source cell exceeds the preset threshold, the load of the source cell may be adjusted by using the MLB function or by using the LB and MLB functions in coordination according to the network mode of the source cell, so that the load of the source cell is adjusted by using multiple adjustment modes in coordination, the load between cells is balanced more effectively, and the utilization rate of the wireless resource is improved.
Example two
As shown in fig. 2, a method for implementing network load balancing according to the second embodiment of the present invention includes:
In the embodiment of the present invention, the load of the source cell may be periodically acquired according to a certain period.
Wherein, the preset threshold can be set arbitrarily.
In the embodiment of the invention, the network coverage mode of the source cell comprises multi-layer network coverage and single-layer network coverage. Wherein the network coverage mode can be obtained by means of user measurement and the like.
And 204, if the network coverage mode indicates that the source cell is a single-layer network coverage area, adjusting the load of the source cell by using a same-frequency MLB function.
Specifically, here, a suitable (e.g., good signal quality, low load, etc.) neighboring cell is selected for the source cell, and the handover parameter between cell pairs is adjusted to perform load migration.
After the load of the source cell is adjusted by using the same-frequency MLB, the load of the source cell can be acquired according to a predetermined time interval. If the load of the source cell obtained at a certain sampling time is less than or equal to the preset threshold, the process returns to step 201. If the obtained loads of the source cells are all smaller than or equal to the preset threshold within a certain time after the sampling time, it can be considered that a parameter backoff condition is met, and Cell Individual Offset (CIO) of the same-frequency MLB is backed off. If the load of the source cell obtained at the sampling time is greater than the preset threshold and the state lasts for a certain time, a congestion mechanism is needed to be started to adjust the load of the source cell.
Specifically, in this step, as shown in fig. 3, the following process is included:
and 301, adjusting the load of the source cell by utilizing an LB function.
In this step, a suitable user is selected from the users of the source cell to migrate to the low load neighbor cell.
After the LB function is performed, the load of the source cell may still be obtained at a certain period to determine whether the LB function is effective. Wherein the first time interval can be arbitrarily set.
And step 303, judging whether the LB function is effective.
If the load of the source cell obtained at the first sampling time is greater than the preset threshold from the first sampling time, executing step 304; if the load of the source cell obtained at the first sampling time is less than or equal to the preset threshold, it indicates that the LB function is in effect, and the step 201 is returned.
After the LB function is executed, when the load of the source cell is started to be obtained, the relation between the obtained load of the source cell and the preset threshold is judged from the first sampling time. And if the load of the source cell obtained at a certain first sampling time is less than or equal to a preset threshold, the LB function is effective. Otherwise, starting a timer for recording the time that the load of the source cell is continuously higher than the preset threshold. If the load of the source cell obtained at a certain sampling time after the first sampling time is less than or equal to a preset threshold, the timer stops timing; otherwise, continuously timing.
The time value obtained by the timer is referred to as a first time. The first sample time is any one of the sample times.
Wherein M is a natural number. The first preset value can be set at will, and the preset requirement can also be set at will. For example, the preset requirement may be set to a drop in the source cell load of more than 20%, etc.
And step 306, adjusting the load of the source cell by using the pilot frequency MLB function.
Specifically, when the load of the source cell is adjusted by using the inter-frequency MLB, a suitable adjacent cell is selected, and the handover parameters between the cell pairs are adjusted to perform load migration.
After the inter-frequency MLB function is executed, the load of the source cell can still be obtained according to a certain period to determine whether the inter-frequency MLB function is effective. The specific process is as follows:
The second time interval can be set arbitrarily, and can be the same as or different from the first time interval.
And step 308, judging whether the inter-frequency MLB function is effective or not.
If the load of the source cell obtained at the second sampling time is greater than the preset threshold from the first sampling time, executing step 309; if the load of the source cell obtained at the first sampling time is less than or equal to the preset threshold, it indicates that the inter-frequency MLB function is in effect, and the step 201 is returned.
After the pilot frequency MLB function is executed, when the load of the source cell is started to be obtained, the relation between the obtained load of the source cell and a preset threshold is judged from the first sampling time. And if the load of the source cell obtained at a certain second sampling time is less than or equal to a preset threshold, the pilot frequency MLB function is effective. Otherwise, starting a timer for recording the time that the load of the source cell is continuously higher than the preset threshold. If the load of the source cell obtained at a certain sampling time after the second sampling time is less than or equal to a preset threshold, the timer stops timing; otherwise, continuously timing.
The time value obtained by the timer is referred to as a second time. The second sample time is any one sample time.
And if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold, when a parameter backspacing condition is met, backspacing the CIO of the different-frequency MLB.
For example, the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold, and within a certain time later, the obtained loads of the source cells are all less than or equal to the preset threshold, and it may be considered that a parameter backoff condition is satisfied, and the CIO of the inter-frequency MLB is backed off.
The second preset value can be set at will, and the preset requirement can also be set at will. For example, the preset requirement may be set to a drop in the source cell load of more than 20%, etc. The suitable neighboring cell may be, for example, a cell with good signal quality and low load.
And 311, adjusting the load of the source cell by using the same-frequency MLB function.
Specifically, in this step, a suitable neighboring cell is selected, and the handover parameters between cell pairs are adjusted to perform load migration.
After the same-frequency MLB is executed, the load of the source cell can still be acquired according to the preset time interval. If the load of the source cell obtained at a certain sampling time is less than or equal to the preset threshold, the process returns to step 201. And if the obtained loads of the source cells are all smaller than or equal to the preset threshold within a certain time after the sampling time, the parameter back-off condition can be considered to be met, and the CIO of the same-frequency MLB is backed off first, and then the CIO of the different-frequency MLB is backed off. If the load of the source cell obtained at the sampling time is greater than the preset threshold and the state lasts for a certain time, a congestion mechanism is needed to be started to adjust the load of the source cell.
It can be seen from the above that, in the embodiment of the present invention, when the load of the source cell exceeds the preset threshold, the load of the source cell may be adjusted by using the MLB function or by using the LB and MLB functions in coordination according to the network mode of the source cell, so that the load of the source cell is adjusted by using multiple adjustment modes in coordination, the load between cells is balanced more effectively, and the utilization rate of the wireless resource is improved.
EXAMPLE III
As shown in fig. 4, the apparatus for implementing network load balancing according to the third embodiment of the present invention includes:
a first obtaining module 401, configured to obtain a load of a source cell; a comparing module 402, configured to compare the load of the source cell with a preset threshold, so as to obtain a determination result; a second obtaining module 403, configured to obtain a network coverage manner of the source cell if the determination result indicates that the load of the source cell is greater than the preset threshold; a first adjusting module 404, configured to adjust a load of the source cell by using a same-frequency mobility load balancing MLB function if the network coverage mode indicates that the source cell is a single-layer network coverage area; a second adjusting module 405, configured to cooperatively adjust the load of the source cell by using a load balancing LB function and a mobility load balancing MLB function if the network coverage mode indicates that the source cell is a multi-layer network coverage area.
In practical application, the first obtaining module 401 is further configured to obtain the load of the source cell according to a predetermined first time interval; the second adjustment module 405 includes: the first adjusting submodule is used for adjusting the load of the source cell by utilizing a load balancing LB function; a first timing sub-module, configured to start from a first sampling time, and if the load of the source cell obtained at the first sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a first time; a second adjusting submodule, configured to adjust the load of the source cell by using a pilot frequency mobility load balancing MLB function if the first time exceeds a first preset value and the decrease degree of the load of the source cell at consecutive M sampling times cannot meet a preset requirement; wherein M is a natural number.
In practical application, the first obtaining module 401 is further configured to obtain the load of the source cell according to a predetermined second time interval; the second adjustment module 405 includes: a second timing submodule, configured to start from a first sampling time, and if the load of the source cell obtained at a second sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a second time; a third adjusting submodule, configured to adjust the load of the source cell by using a same-frequency mobility load balancing MLB function if the second time exceeds a second preset value and a suitable neighboring cell cannot be selected, or if the second time exceeds the second preset value and the reduction degree of the load of the source cell at N consecutive sampling times cannot meet a preset requirement; wherein N is a natural number.
As shown in fig. 5, in order to further save resources and improve resource utilization, the apparatus further includes:
a first parameter backoff module 406, configured to, if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold, backoff a cell individual offset CIO of the inter-frequency MLB when a parameter backoff condition is met.
As shown in fig. 5 again, in order to further save resources and improve resource utilization, the apparatus further includes: a second parameter rollback module 407, configured to perform parameter rollback when a parameter rollback condition is satisfied. In this case, the second parameter backoff module is specifically configured to backoff the cell individual offset CIO of the intra-frequency MLB first and then backoff the cell individual offset CIO of the inter-frequency MLB.
As shown in fig. 5, the apparatus further includes: and a third parameter rollback module 408, configured to rollback cell individual offset CIO of the same-frequency MLB when a parameter rollback condition is satisfied.
The working principle of the device according to the invention can be referred to the description of the method embodiment described above.
It can be seen from the above that, in the embodiment of the present invention, when the load of the source cell exceeds the preset threshold, the load of the source cell may be adjusted by using the MLB function or by using the LB and MLB functions in coordination according to the network mode of the source cell, so that the load of the source cell is adjusted by using multiple adjustment modes in coordination, the load between cells is balanced more effectively, and the utilization rate of the wireless resource is improved.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A method for realizing network load balance is characterized by comprising the following steps:
acquiring the load of a source cell;
comparing the load of the source cell with a preset threshold to obtain a judgment result;
if the judgment result shows that the load of the source cell is greater than the preset threshold, acquiring a network coverage mode of the source cell;
if the network coverage mode indicates that the source cell is a single-layer network coverage area, adjusting the load of the source cell by using a same-frequency Mobile Load Balancing (MLB) function;
if the network coverage mode indicates that the source cell is a multi-layer network coverage area, cooperatively adjusting the load of the source cell by utilizing a load balancing LB function and a mobility load balancing MLB function;
wherein, if the network coverage mode indicates that the source cell is a multi-layer network coverage area, the step of cooperatively adjusting the load of the source cell by using a load balancing LB function and a mobility load balancing MLB function includes:
adjusting the load of the source cell by using a load balancing LB function;
acquiring the load of the source cell according to a preset first time interval;
starting from a first sampling time, if the load of the source cell obtained at the first sampling time is greater than the preset threshold, timing the time that the load of the source cell is greater than the preset threshold to obtain a first time;
if the first time exceeds a first preset value and the reduction degree of the source cell load can not meet preset requirements at continuous M sampling times, adjusting the load of the source cell by using a pilot frequency Mobile Load Balancing (MLB) function;
wherein M is a natural number.
2. The method of claim 1, wherein after the step of adjusting the load of the source cell by using inter-frequency Mobility Load Balancing (MLB) function, the method further comprises:
acquiring the load of the source cell according to a preset second time interval;
starting from the first sampling time, if the load of the source cell obtained at the second sampling time is greater than the preset threshold, timing the time that the load of the source cell is greater than the preset threshold to obtain a second time;
if the second time exceeds a second preset value and a proper adjacent cell cannot be selected, or if the second time exceeds the second preset value and the reduction degree of the source cell load at continuous N sampling times cannot meet preset requirements, adjusting the load of the source cell by using a same-frequency Mobile Load Balancing (MLB) function;
wherein N is a natural number.
3. The method of claim 2, further comprising:
and if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold, and when a parameter backspacing condition is met, backing off the cell individual offset CIO of the different-frequency MLB.
4. The method according to claim 3, wherein after the step of adjusting the load of the source cell by using an intra-frequency Mobility Load Balancing (MLB) function, the method further comprises:
and when the parameter rollback condition is met, performing parameter rollback.
5. The method of claim 4, wherein the performing parameter fallback comprises:
and firstly backing the individual cell offset CIO of the same-frequency MLB, and then backing the individual cell offset CIO of the different-frequency MLB.
6. The method according to claim 1, wherein if the network coverage mode indicates that the source cell is a single-layer network coverage area, after the step of adjusting the load of the source cell by using a same-frequency mobility load balancing MLB function, the method further comprises:
and when the parameter backspacing condition is met, backing the cell individual offset CIO of the MLB with the same frequency.
7. An apparatus for implementing network load balancing, comprising:
the first acquisition module is used for acquiring the load of a source cell;
the comparison module is used for comparing the load of the source cell with a preset threshold to obtain a judgment result;
a second obtaining module, configured to obtain a network coverage mode of the source cell if the determination result indicates that the load of the source cell is greater than the preset threshold;
a first adjusting module, configured to adjust a load of the source cell by using a same-frequency Mobility Load Balancing (MLB) function if the network coverage mode indicates that the source cell is a single-layer network coverage area;
a second adjusting module, configured to cooperatively adjust a load of the source cell by using a load balancing LB function and a mobility load balancing MLB function if the network coverage mode indicates that the source cell is a multi-layer network coverage area;
the first obtaining module is further configured to obtain the load of the source cell according to a predetermined first time interval; the second adjustment module includes:
the first adjusting submodule is used for adjusting the load of the source cell by utilizing a load balancing LB function;
a first timing sub-module, configured to start from a first sampling time, and if the load of the source cell obtained at the first sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a first time;
a second adjusting submodule, configured to adjust the load of the source cell by using a pilot frequency mobility load balancing MLB function if the first time exceeds a first preset value and the decrease degree of the load of the source cell at consecutive M sampling times cannot meet a preset requirement;
wherein M is a natural number.
8. The apparatus of claim 7, wherein the first obtaining module is further configured to obtain the load of the source cell according to a predetermined second time interval; the second adjustment module further comprises:
a second timing submodule, configured to start from a first sampling time, and if the load of the source cell obtained at a second sampling time is greater than the preset threshold, time the load of the source cell is greater than the preset threshold to obtain a second time;
a third adjusting submodule, configured to adjust the load of the source cell by using a same-frequency mobility load balancing MLB function if the second time exceeds a second preset value and a suitable neighboring cell cannot be selected, or if the second time exceeds the second preset value and the reduction degree of the load of the source cell at N consecutive sampling times cannot meet a preset requirement;
wherein N is a natural number.
9. The apparatus of claim 8, further comprising:
and the first parameter backspacing module is used for backspacing the cell individual offset CIO of the inter-frequency MLB when the parameter backspacing condition is met if the load of the source cell obtained at the second sampling time is less than or equal to the preset threshold.
10. The apparatus of claim 8, further comprising:
and the second parameter rollback module is used for performing parameter rollback when the parameter rollback condition is met.
11. The apparatus according to claim 10, wherein the second parameter backoff module is specifically configured to backoff a cell individual offset CIO of an intra-frequency MLB first and then backoff a cell individual offset CIO of an inter-frequency MLB.
12. The apparatus of claim 7, further comprising:
and the third parameter backspacing module is used for backspacing the cell individual offset CIO of the MLB with the same frequency when the parameter backspacing condition is met.
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| CN111182604A (en) * | 2019-12-27 | 2020-05-19 | 北京拓明科技有限公司 | Intelligent balancing method and system for LTE wireless network load |
| CN113329444B (en) * | 2020-02-28 | 2022-07-01 | 中国移动通信集团福建有限公司 | High-load cell optimization method and device and electronic equipment |
| CN113395712B (en) * | 2020-03-11 | 2023-04-07 | 中国移动通信集团设计院有限公司 | High-load cell optimization method and device |
| CN115038122A (en) * | 2021-03-05 | 2022-09-09 | 华为技术有限公司 | Load balancing method and device and readable storage medium |
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