CN106550414B - Load balancing method and device - Google Patents
Load balancing method and device Download PDFInfo
- Publication number
- CN106550414B CN106550414B CN201510609072.0A CN201510609072A CN106550414B CN 106550414 B CN106550414 B CN 106550414B CN 201510609072 A CN201510609072 A CN 201510609072A CN 106550414 B CN106550414 B CN 106550414B
- Authority
- CN
- China
- Prior art keywords
- cell
- optimized
- target cell
- qoffset2
- cells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/0883—Load balancing or load distribution between entities in ad-hoc networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
Abstract
The invention provides a load balancing method, which comprises the following steps: when the cells in the self-organizing network need to carry out load balancing, adjusting reselection parameters of the optimized cells and the shunting target cells and reselection measurement parameters of the optimized cells; controlling cell system messages in the ad hoc network; and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition. The invention also provides a load balancing device.
Description
Technical Field
The present invention relates to the field of wireless networks, and in particular, to a method and an apparatus for balancing idle mobile loads in a Self-organizing Network (SON).
Background
Currently, a wireless network of a Universal Mobile Telecommunications System (UMTS) has been widely used, and a method for network optimization includes manual optimization and automatic optimization, where the automatic optimization is one of ad hoc network functions, and determines whether network performance is deteriorated by automatically monitoring a network index, such as a counter value or a Key Performance Indicator (KPI); when the network performance is deteriorated, the corresponding wireless parameter value is adjusted according to the deteriorated index, so that the network performance is improved.
The goals of network optimization in ad hoc networks include network coverage, network capacity, network load, etc. For the optimization of the network load, after the high load time and the normal load time of the network are determined, high load parameter configuration can be adopted in the high load time of the network, so that the load of the network is reasonably distributed, and the network load is reduced; and common parameter configuration can be adopted in the normal load time of the network, so that the basic coverage and performance of the network are ensured.
In the process of determining reasonable high-load parameter configuration, the network performance index needs to be continuously adjusted step by step to optimize the relevant performance index, so as to obtain reasonable high-load parameter configuration. However, reasonable high-load parameter configuration is not always kept unchanged, when the user distribution situation in the network changes or the user behavior changes, the network wireless performance index also changes, and at this time, the parameter configuration needs to be readjusted according to the change of the network situation, i.e., the parameter optimization process.
In the UMTS ad hoc network, one of the most common methods for performing mobile load balancing is to adjust and optimize partial reselection parameters in an idle state, and after the parameters are adjusted according to network wireless performance indexes, network load can be reduced by load splitting to a certain extent. However, the current idle mobile load balancing method has many problems, for example, after the reselection parameters are adjusted, system broadcast message updating is required, if there are many adjusted cells or system messages are updated frequently, a system message storm is caused, and the system load is increased; meanwhile, after the reselection parameters are adjusted, if the measurement parameter configuration is unreasonable, the user cannot initiate reselection measurement, and further cannot perform reselection.
Disclosure of Invention
In view of this, embodiments of the present invention are expected to provide a load balancing method and apparatus, which can overcome the problem that a system message storm and reselection measurement parameters are not adjusted according to network wireless performance indexes due to a mobile load balancing method in an existing UMTS ad hoc network.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a load balancing method, which comprises the following steps:
when the cells in the self-organizing network need to carry out load balancing, adjusting reselection parameters of the optimized cells and the shunting target cells and reselection measurement parameters of the optimized cells;
controlling cell system messages in the ad hoc network;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
In the above scheme, the method further comprises: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
In the foregoing solution, when a cell in the ad hoc network needs to perform load balancing, adjusting reselection parameters of an optimized cell and a target cell for offloading and reselection measurement parameters of the optimized cell includes:
when the load of the optimized cell is higher than a first preset threshold value and the load of the shunting target cell is lower than a second preset threshold value, adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell to enable a user to flow from the optimized cell to the shunting target cell, and increasing a same frequency measurement threshold value (sintrasearch)/a different frequency measurement threshold value (sintersearch) of the optimized cell;
and when the load of the optimized cell is lower than a second preset threshold value and the load of the shunting target cell is higher than a first preset threshold value, adjusting the reselection parameters Qoffset2 of the optimized cell and the shunting target cell, wherein the user can flow from the shunting target cell to the optimized cell, and can reduce the common frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) of the optimized cell.
In the foregoing solution, the controlling a cell system message in an ad hoc network includes:
when the Qoffset2 of the optimization cell and the target cell for offloading is configured as busy, within a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the other optimized cells;
when the load of other optimized cells is lower than a second preset threshold value, the Qoffset2 of the other optimized cells and the shunting target cell are adjusted to be configured in idle time;
and when the load of the optimized cell is lower than a second preset threshold value, adjusting the Qoffset2 of the optimized cell and the shunting target cell to be configured in idle time.
In the foregoing solution, the controlling the cell system message in the ad hoc network includes:
when the Qoffset2 of the optimized cell and the target cell for shunting is configured in idle time, in a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the other optimized cells;
when the load of other optimized cells is lower than a second preset threshold value, the Qoffset2 of the other optimized cells and the shunting target cell are adjusted to be configured in idle time;
and when the load of the optimized cell is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the optimized cell.
In the above scheme, the busy hour configuration includes: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell;
the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
An embodiment of the present invention further provides a load balancing apparatus, where the apparatus includes: a parameter adjusting module and a message control module, wherein,
the parameter adjusting module is used for adjusting reselection parameters of an optimized cell and a shunting target cell and reselection measurement parameters of the optimized cell when the cells in the self-organizing network need to carry out load balancing;
the message control module is used for controlling cell system messages in the self-organizing network;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
In the foregoing solution, the apparatus further includes a cell number control module, configured to: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
In the foregoing solution, the parameter adjusting module is specifically configured to:
when the load of the optimized cell is higher than a first preset threshold value and the load of the shunting target cell is lower than a second preset threshold value, adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell to enable a user to flow from the optimized cell to the shunting target cell, and increasing a same frequency measurement threshold value (sintrasearch)/a different frequency measurement threshold value (sintersearch) of the optimized cell;
and when the load of the optimized cell is lower than a second preset threshold value and the load of the shunting target cell is higher than a first preset threshold value, adjusting the reselection parameters Qoffset2 of the optimized cell and the shunting target cell, wherein the user can flow from the shunting target cell to the optimized cell, and can reduce the common frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) of the optimized cell.
In the foregoing solution, the message control module is specifically configured to: when the Qoffset2 of the optimization cell and the target cell for offloading is configured as busy, within a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the other optimized cells;
when the load of other optimized cells is lower than a second preset threshold value, the Qoffset2 of the other optimized cells and the shunting target cell are adjusted to be configured in idle time;
and when the load of the optimized cell is lower than a second preset threshold value, adjusting the Qoffset2 of the optimized cell and the shunting target cell to be configured in idle time.
In the foregoing solution, the message control module is specifically configured to: when the Qoffset2 of the optimized cell and the target cell for shunting is configured in idle time, in a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the other optimized cells;
when the load of other optimized cells is lower than a second preset threshold value, the Qoffset2 of the other optimized cells and the shunting target cell are adjusted to be configured in idle time;
and when the load of the optimized cell is higher than a first preset threshold value, not adjusting the Qoffset2 of the shunting target cell and the optimized cell.
In the foregoing solution, the busy hour configuration includes: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell;
the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
According to the load balancing method and device provided by the embodiment of the invention, when the cells in the self-organizing network need to be subjected to load balancing, the reselection parameters of the optimized cells and the shunting target cells and the reselection measurement parameters of the optimized cells are adjusted; control cell system messages in an ad hoc network. Therefore, the problems that a system message storm possibly caused by updating of a large amount of system broadcast messages and reselection measurement parameters are not adjusted according to network wireless performance indexes in a mobile load balancing function in the existing UMTS self-organizing network can be solved, the load distribution is more effective, the number of system messages is effectively reduced, and the system load is reduced.
Drawings
FIG. 1 is a schematic flow chart of a load balancing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a networking architecture according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for adjusting reselection parameters of an optimized cell and a target cell of offloading and a reselection measurement parameter of the optimized cell according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for controlling the number of target cells to be shunted according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a load balancing apparatus according to an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, when the cells in the self-organizing network need to carry out load balancing, the reselection parameters of the optimized cells and the shunting target cells and the reselection measurement parameters of the optimized cells are adjusted; controlling cell system messages in the ad hoc network; and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
In the embodiment of the invention, the high load time period and the normal load time period of the optimized cell are firstly identified in the self-organizing network. In the embodiment of the invention, the high load time period is called busy hour, and conversely, the normal load time period is called idle hour. In busy hour, the optimization cell adopts high load configuration, namely busy hour configuration, so that the load of the optimization cell is shunted to surrounding adjacent cells, and the load of the optimization cell is reduced; and in idle time, the optimization cell adopts common load configuration, namely idle time configuration, so that the coverage and load distribution of the optimization cell and the adjacent cell are ensured. Under normal conditions, busy hour configuration and idle hour configuration changes may exist for several times within 24 hours a day, and because the adjustment of reselection parameters is based on cell pairs, that is, the optimized cell and the co-frequency/inter-frequency neighboring cells of the optimized cell, when busy hour configuration and idle hour configuration changes occur, if there are many neighboring cells of the optimized cell, system broadcast messages of multiple cells need to be updated, and a large amount of system messages increase the load of system equipment. Therefore, when load balancing is performed, it is also necessary to control updating of system messages and the number of neighbors that need to adjust parameters. In addition, if the reselection measurement parameter sintrasearch/sintersearch is not reasonably configured, the desired effect cannot be achieved by only adjusting the reselection parameter Qoffset, and therefore, the reselection measurement parameter sintrasearch/sintersearch needs to be adjusted during load balancing.
The following describes the implementation of the technical solution of the present invention in further detail with reference to the accompanying drawings and specific embodiments. Fig. 1 is a schematic flow chart of a load balancing method according to an embodiment of the present invention, and as shown in fig. 1, the load balancing method according to the embodiment includes the following steps:
step 101: when the cells in the self-organizing network need to carry out load balancing, adjusting reselection parameters of the optimized cells and the shunting target cells and reselection measurement parameters of the optimized cells;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
For example, when the optimized cell is a cell with a load higher than a first preset threshold, the target offloading cell may be a neighboring cell of the optimized cell with a load lower than a second preset threshold; when the optimized cell is a cell with a load lower than a second preset threshold, the target shunting cell may be a neighboring cell of the optimized cell with a load higher than a first preset threshold;
in this embodiment of the present invention, when a cell in an ad hoc network needs to perform load balancing, adjusting reselection parameters of an optimized cell and a target cell for offloading and reselection measurement parameters of the optimized cell includes:
when the load of the optimized cell is higher than a first preset threshold value and the load of the shunting target cell is lower than a second preset threshold value, the adjustment principle of the optimized cell and the shunting target cell on Qoffset2 is to enable a user to flow from the optimized cell to an adjacent cell, then the reselection parameter Qoffset2 of the optimized cell and the shunting target cell is adjusted, the user flows from the optimized cell to the shunting target cell, and the same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) of the optimized cell is increased, so that the user of the optimized cell triggers reselection measurement earlier.
When the load of the optimized cell is lower than a second preset threshold value and the load of the shunting target cell is higher than a first preset threshold value, the Qoffset2 adjustment principle of the optimized cell and the shunting target cell is that when the optimized cell absorbs users as much as possible, the reselection parameters Qoffset2 of the optimized cell and the shunting target cell are adjusted, the users flow from the shunting target cell to the optimized cell, and the same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) of the optimized cell is adjusted to be lower, so that the users of the optimized cell are more difficult to trigger reselection measurement.
Fig. 2 is a schematic diagram of a networking structure according to an embodiment of the present invention, and as shown in fig. 2, some cells to be optimized are selected in a wireless network, and a self-organizing network task is created, so that the cell load is optimized in busy hours by adjusting parameters when the cell is optimized in an idle state. Fig. 3 is a schematic flow chart of a method for adjusting reselection parameters of an optimized cell and a target cell for offloading and a reselection measurement parameter of the optimized cell according to an embodiment of the present invention, where according to the networking structure shown in fig. 2, the reselection measurement parameter according to the embodiment of the present invention takes a common frequency measurement threshold (sintrasearch) as an example, and includes the following steps:
in the embodiment of the present invention, the transmission power in the network wireless performance data may be selected as an index for evaluating the cell load, for example, 50% of the maximum transmission power of the cell is used as a first preset threshold, and 40% of the maximum transmission power of the cell is used as a second preset threshold.
In the embodiment of the present invention, the method further includes setting the number N of the shunting target cells capable of adjusting the parameters each time to be not more than 3.
in this step, taking the optimized cell a as an example, the co-frequency neighboring cell of the optimized cell a includes a cell B, C, D, where the power performance index KPI of the cell B is 35%, the power performance index KPI of the cell C is 25%, and the power performance index KPI of the cell D is 55%; optimizing all same-frequency adjacent cells of the cell, wherein the cells B and C which meet preset conditions, namely the power performance index KPI is 40% lower than a second preset threshold value, are provided; meanwhile, the number N of the shunting target cells capable of adjusting the parameters each time is not more than 3, and the number of the actually adjustable adjacent cells meeting the preset conditions is only 2, so that the cells B and C can be used as the shunting target cells of the optimized cell A.
in this step, if the power performance indicator KPI of the optimized cell a is greater than the first preset threshold value by 50%, and the power performance indicator KPI of the offloading target cell B (or C) is less than the second preset threshold value by 40%, sintrasearch of the optimized cell needs to be increased, so that the user of the optimized cell triggers reselection measurement earlier; in the embodiment of the present invention, the adjustment may be performed according to the step length, for example, may be 2 dB; meanwhile, the Qoffset2 of the shunting target cell B (or C) corresponding to the optimized cell A needs to be adjusted to be small, the Qoffset2 of the shunting target cell B (or C) corresponding to the optimized cell A needs to be adjusted to be large, and a user can flow from the optimized cell to the adjacent cell.
If the power performance index KPI of the optimized cell A is less than 40% of the second preset threshold value and the power performance index KPI of the adjacent cell B (or C) is greater than 50% of the first preset threshold value, the sintrasearch of the optimized cell needs to be adjusted down, so that the user of the optimized cell is more difficult to trigger reselection measurement; in the embodiment of the present invention, the adjustment may be performed according to the step length, for example, may be 2 dB; meanwhile, the Qoffset2 of the shunting target cell B (or C) corresponding to the optimized cell a needs to be adjusted to be large, and the Qoffset2 of the shunting target cell B (or C) corresponding to the optimized cell a needs to be adjusted to be small, so that the user can flow from the target shunting cell to the optimized cell.
Step 102: controlling cell system messages in the ad hoc network;
in the embodiment of the present invention, when a cell has a low load, such as a power performance indicator KPI is lower than a second preset threshold, and the load of surrounding neighboring cells is high, such as the power performance indicator KPI is higher than a first preset threshold, the cell with the low load may become a plurality of surrounding high-load cells, i.e., a target cell for offloading of an optimized cell; because the time for adjusting parameters of each high-load cell is different, the system messages of the cell with low load can be continuously updated, so that a signaling storm is caused, and the system load is increased. Therefore, the system message needs to be controlled to avoid frequent update of the system broadcast message SIB11/12(system information block type 11/12).
The controlling cell system messages in the ad hoc network comprises:
when the Qoffset2 of the optimized cell and the target cell for offloading is configured in busy hours, starting a timer T, and within a preset time of the timer T:
the shunting target cell is not used as a target cell for shunting other optimized cells, and when the other optimized cells arrive in busy hours, namely when the loads of the other optimized cells are higher than a first preset threshold value, the Qoffset2 of the shunting target cell and the other optimized cells are not adjusted; when other optimized cells are idle, namely when the loads of other optimized cells are lower than a second preset threshold value, the Qoffset2 of other optimized cells and the shunting target cell are adjusted to be configured during idle; when the idle time of the optimized cell comes, namely when the load of the optimized cell is lower than a second preset threshold value, the Qoffset2 of the optimized cell and the shunting target cell is adjusted to be configured in the idle time.
When the Qoffset2 of the optimized cell and the target cell for shunting is configured in idle time, in a preset time:
the shunting target cell is not used as a target cell for shunting other optimized cells, and when the other optimized cells arrive in busy hours, namely when the loads of the other optimized cells are higher than a first preset threshold value, the Qoffset2 of the shunting target cell and the other optimized cells are not adjusted; when other optimized cells are idle, namely when the loads of other optimized cells are lower than a second preset threshold value, the Qoffset2 of other optimized cells and the shunting target cell are adjusted to be configured during idle; when the busy hour of the optimized cell comes, namely when the load of the optimized cell is higher than a first preset threshold value, the Qoffset2 of the shunting target cell and the optimized cell is adjusted.
When the timer T expires, the timer T is cleared. The shunting target cell can be used as a shunting target cell of other adjacent optimized cells, and the process is repeated;
when the offloading target cell becomes a high load cell before the timer T expires, the timer is stopped.
Wherein the busy hour configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell; the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
In the method for controlling a cell system message in a self-organizing network according to the embodiment of the present invention, still taking the networking structure shown in fig. 2 as an example, a cell B is a low-load cell, that is, a power performance indicator KPI is lower than a second preset threshold; the cell A, D, E, F is a high-load cell, i.e. the power performance indicator KPI of the cell A, D, E, F is higher than a first predetermined threshold. Then cell A, D, E, F is the best cell and cell B is simultaneously the offload target cell for best cell A, D, E, F; under normal conditions, the Qoffset2 of the cell A and the cell B needs to be adjusted when the cell A is busy or idle, and the Qoffset2 of the cell D and the cell D needs to be adjusted when the cell D is busy or idle; adjusting Qoffset2 of cell E and cell B in busy or idle time of cell E; the Qoffset2 for cell F and cell B is adjusted during busy or idle time of cell F.
In cells A, D, E and F, when the busy hour of a cell A first comes, Qoffset2 between the cell A and a cell B is adjusted to be configured for the busy hour of the cell A, the system message update of the cell B is triggered, and a timer T of the cell B is started;
before the timer T expires:
if cell B uses the busy hour configuration of cell a, then:
when the busy hour of cell D, E or F comes, the Qoffset2 between cell D and cell B, Qoffset2 between cell E and cell B, or Qoffset2 between cell F and cell B is not adjusted.
When idle time of cell D, E or F comes, if Qoffset2 between cell D and cell B, Qoffset2 between cell E and cell B, or Qoffset2 between cell F and cell B adopts busy time configuration, then it needs to be adjusted to idle time configuration.
When the idle time of the cell A arrives, the Qoffset2 between the cell A and the cell B is adjusted to be configured for the idle time of the cell A.
If the cell B adopts the idle configuration of the cell A, then:
when the busy hour of cell D, E or F comes, Qoffset2 between cell D and cell B, Qoffset2 between cell E and cell B, or Qoffset2 between cell F and cell B is not adjusted.
When idle time of cell D, E or F comes, if Qoffset2 between cell D and cell B, Qoffset2 between cell E and cell B, or Qoffset2 between cell F and cell B adopts busy time configuration, then it needs to be adjusted to idle time configuration.
When the busy hour of the cell A arrives, the Qoffset2 between the cell A and the cell B is not adjusted, that is, the value of Qoffset2 between the cell A and the cell B remains unchanged.
And when the timer T is up, clearing the timer T. If the busy hour of the cell A or D or E or F comes, the above process is repeated.
When the cell B becomes a high load cell and the timer T does not expire, the timer T is stopped.
In the embodiment of the present invention, the method further includes: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
In the embodiment of the invention, the adjustment of the reselection parameters is based on the cell pair, namely the optimized cell and the same-frequency/different-frequency adjacent cells thereof. When the number of the distributable neighbor cells of the optimized cell meeting the preset conditions is large, N neighbor cells can be randomly selected from the distributable neighbor cells to serve as the same frequency/different frequency neighbor cells to be adjusted of the optimized cell, namely, the distributable target cell. When the optimized cell is busy or idle, only the parameter adjustment is carried out on the selected shunting target cell.
Specifically, when there are a plurality of neighboring cells meeting the preset condition, N cells are randomly selected from the plurality of neighboring cells meeting the preset condition as the target cell for offloading. Taking the networking structure shown in fig. 2 as an example, fig. 4 is a schematic flow chart of the method for controlling the number of target cells for offloading according to the embodiment of the present invention, and as shown in fig. 4, the method includes the following steps:
step 401: determining a first preset threshold value and a second preset threshold value;
the method includes the steps of selecting transmission power in network wireless performance data as an index for evaluating cell load, for example, determining a first preset threshold and a second preset threshold according to a power performance index KPI, wherein the power performance index KPI is 50% of the first preset threshold, the power performance index KPI is 40% of the second preset threshold, and setting the maximum shunting target cell number N which can adjust parameters each time to be 2.
Step 402: determining all low-load same-frequency/different-frequency adjacent cells of each optimized cell;
the shunting target cell is a shuntable low-load same-frequency adjacent cell of the optimization cell. Taking the optimized cell a as an example, among the co-frequency adjacent cells of the optimized cell a, the cell which satisfies that the power performance indicator KPI is lower than the second preset threshold value has B, C, D three cells, namely, the power performance indicator KPI of B is less than 40%, the power performance indicator KPI of C is less than 40%, and the power performance indicator KPI of D is less than 40%, so that the cell B, C, D is all low-load co-frequency/inter-frequency adjacent cells of the optimized cell a;
step 403: selecting N cells from all low-load same-frequency/different-frequency neighboring cells as a shunting target cell of an optimized cell;
in the embodiment of the present invention, since the maximum number N of neighboring cells that can adjust the parameter each time is 2, two cells, for example, cell B and cell D, are randomly selected from three cells B, C, and D as the target cells for offloading of the optimized cell a.
In the embodiment of the present invention, the selection of the first preset threshold and the second preset threshold is only an example of a power performance indicator, but is not limited thereto, and all indicators capable of distinguishing busy hours from idle hours of a cell may be used as a basis for selecting the first preset threshold and the second preset threshold of the number of the embodiments of the present invention.
An embodiment of the present invention further provides a load balancing apparatus, fig. 5 is a schematic structural diagram of the load balancing apparatus according to the embodiment of the present invention, and as shown in fig. 5, the apparatus includes: a parameter adjusting module 51, a message control module 52, wherein,
the parameter adjusting module 51 is configured to adjust reselection parameters of an optimized cell and a target cell for offloading and reselection measurement parameters of the optimized cell when a cell in the ad hoc network needs to perform load balancing;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
For example, when the optimized cell is a cell with a load higher than a first preset threshold, the target offloading cell may be a neighboring cell of the optimized cell with a load lower than a second preset threshold; when the optimized cell is a cell with a load lower than a second preset threshold, the target shunting cell may be a neighboring cell of the optimized cell with a load higher than a first preset threshold;
in the embodiment of the present invention, the parameter adjusting module 51 is specifically configured to:
when the load of the optimized cell is higher than the first preset threshold and the load of the target cell is lower than the second preset threshold, the adjustment principle of the Qoffset2 by the optimized cell and the target cell is to make the user flow from the optimized cell to the neighboring cell, then the parameter adjustment module 51 adjusts the reselection parameter Qoffset2 of the optimized cell and the target cell, so that the user flows from the optimized cell to the target cell, and increases the same frequency measurement threshold (sintersearch)/different frequency measurement threshold (sintersearch) of the optimized cell, so that the user of the optimized cell triggers reselection measurement earlier.
When the load of the optimized cell is lower than the second preset threshold and the load of the target cell is higher than the first preset threshold, and the adjustment principle of the optimized cell and the target cell for offloading Qoffset2 is that the optimized cell absorbs users as much as possible, the parameter adjustment module 51 adjusts the reselection parameter Qoffset2 of the optimized cell and the target cell for offloading, so that the users can flow from the target cell to the optimized cell, and decrease the common frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) of the optimized cell, thereby making it more difficult for the users of the optimized cell to trigger reselection measurement.
The message control module 52 is configured to control a cell system message in the ad hoc network;
in the embodiment of the present invention, when a cell has a low load, such as a power performance indicator KPI is lower than a second preset threshold, and the load of surrounding neighboring cells is high, such as the power performance indicator KPI is higher than a first preset threshold, the cell with the low load may become a plurality of surrounding high-load cells, i.e., a target cell for offloading of an optimized cell; because the time for adjusting parameters of each high-load cell is different, the system messages of the cell with low load can be continuously updated, so that a signaling storm is caused, and the system load is increased. Therefore, the message control module 52 needs to control the system message to avoid frequent update of the system broadcast message SIB11/12(system information block type 11/12).
In this embodiment of the present invention, the message control module 52 is specifically configured to:
when Qoffset2 of the optimized cell and the target cell is configured in busy time, the message control module 52 starts a timer T, and within a preset time of the timer T:
the target cell for offloading is not used as a target cell for offloading by another optimized cell, and when the other optimized cell is busy, that is, when the load of the other optimized cell is higher than the first preset threshold, the message control module 52 does not adjust Qoffset2 of the target cell for offloading and the other optimized cell;
when other optimized cells are idle, that is, when the loads of other optimized cells are lower than a second preset threshold, the message control module 52 adjusts Qoffset2 of other optimized cells and the target cell to be configured when the optimized cells are idle;
when the idle time of the optimized cell comes, that is, when the load of the optimized cell is lower than a second preset threshold, the message control module 52 adjusts Qoffset2 of the optimized cell and the target cell for offloading to be configured in the idle time.
When the Qoffset2 of the optimized cell and the target cell for shunting is configured in idle time, in a preset time:
the target cell for offloading is not used as a target cell for offloading by another optimized cell, and when the other optimized cell is busy, that is, when the load of the other optimized cell is higher than the first preset threshold, the message control module 52 does not adjust Qoffset2 of the target cell for offloading and the other optimized cell;
when other optimized cells are idle, that is, when the loads of other optimized cells are lower than a second preset threshold, the message control module 52 adjusts Qoffset2 of other optimized cells and the target cell to be configured when the optimized cells are idle;
when the idle time of the optimized cell comes, that is, when the load of the optimized cell is higher than the first preset threshold, the message control module 52 does not adjust Qoffset2 of the offloading target cell and the optimized cell.
When the timer T expires, the message control module 52 resets the timer T to zero, so that the target offloading cell can be used as an offloading target cell of another neighboring optimized cell, and repeats the above process;
the message control module 52 stops the timer when the offload target cell becomes a high-load cell before the timer T expires.
Wherein the busy hour configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell; the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
In this embodiment of the present invention, the apparatus further includes a cell number control module 53, configured to: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
In the embodiment of the invention, the adjustment of the reselection parameters is based on the cell pair, namely the optimized cell and the same-frequency/different-frequency adjacent cells thereof. When the number of distributable neighbor cells of the optimized cell meeting the preset condition is large, the cell number control module 53 randomly selects N neighbor cells among the distributable neighbor cells as the to-be-adjusted common-frequency/different-frequency neighbor cells of the optimized cell, that is, the distributable target cell. When the optimized cell is busy or idle, only the parameter adjustment is carried out on the selected shunting target cell.
The implementation functions of the processing modules in the load balancing apparatus shown in fig. 5 can be understood by referring to the related description of the aforementioned load balancing method. Those skilled in the art will understand that the functions of the processing modules in the load balancing apparatus shown in fig. 5 can be implemented by a program running on a processor, and can also be implemented by specific logic circuits, such as: may be implemented by a Central Processing Unit (CPU), Microprocessor (MPU), Digital Signal Processor (DSP), or Field Programmable Gate Array (FPGA).
In the embodiments provided in the present invention, it should be understood that the disclosed method and apparatus can be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the modules is only one logical functional division, and other division manners may be implemented in practice, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the communication connections between the components shown or discussed may be through interfaces, indirect couplings or communication connections of devices or modules, and may be electrical, mechanical or other.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed on a plurality of network modules; some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional modules in the embodiments of the present invention may be integrated into one processing module, or each module may be separately used as one module, or two or more modules may be integrated into one module; the integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read-Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated module according to the embodiment of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several 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 methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The load balancing method and apparatus described in the embodiments of the present invention are only examples of the above embodiments, but are not limited to these, and those skilled in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. A method of load balancing, the method comprising:
when a cell in the ad hoc network needs to perform load balancing, adjusting reselection parameters of an optimized cell and a shunting target cell and reselection measurement parameters of the optimized cell specifically include:
when the load of the optimized cell is higher than a first preset threshold value and the load of the shunting target cell is lower than a second preset threshold value, the optimized cell adopts busy hour configuration, wherein the busy hour configuration comprises the following steps: adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell, so that a user can flow from the optimized cell to the shunting target cell, and increasing a same frequency measurement threshold (sintrasearch)/a different frequency measurement threshold (sintersearch) of the optimized cell;
when the load of the optimized cell is lower than a second preset threshold value and the load of the shunting target cell is higher than a first preset threshold value, the optimized cell adopts idle time configuration, wherein the idle time configuration comprises the following steps: adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell, wherein a user shunts from the shunting target cell to the optimized cell, and reduces a same frequency measurement threshold (sintrasearch)/a different frequency measurement threshold (sintersearch) of the optimized cell;
controlling cell system messages in an ad hoc network, the controlling comprising:
when the reselection parameter Qoffset2 of the optimized cell and the target cell for shunting is configured in busy, within a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the other optimized cells;
when the loads of other optimized cells are lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the other optimized cells and the shunting target cell to be configured in idle;
when the load of the optimized cell is lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the optimized cell and the shunting target cell to be configured when the parameters are idle;
or the like, or, alternatively,
when the reselection parameter Qoffset2 of the optimized cell and the target cell for shunting is configured in idle time, within the preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the other optimized cells;
when the loads of other optimized cells are lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the other optimized cells and the shunting target cell to be configured in idle;
when the load of the optimized cell is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the optimized cell;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
2. The method of claim 1, further comprising: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
3. The method of claim 1,
the busy hour configuration comprises the following steps: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell;
the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
4. A load balancing apparatus, the apparatus comprising: a parameter adjusting module and a message control module, wherein,
the parameter adjusting module is configured to adjust reselection parameters of an optimized cell and a offload target cell and reselection measurement parameters of the optimized cell when a cell in the ad hoc network needs to perform load balancing, and specifically includes:
when the load of the optimized cell is higher than a first preset threshold value and the load of the shunting target cell is lower than a second preset threshold value, the optimized cell adopts busy hour configuration, wherein the busy hour configuration comprises the following steps: adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell, so that a user can flow from the optimized cell to the shunting target cell, and increasing a same frequency measurement threshold (sintrasearch)/a different frequency measurement threshold (sintersearch) of the optimized cell;
when the load of the optimized cell is lower than a second preset threshold value and the load of the shunting target cell is higher than a first preset threshold value, the optimized cell adopts idle time configuration, wherein the idle time configuration comprises the following steps: adjusting a reselection parameter Qoffset2 of the optimized cell and the shunting target cell, wherein a user shunts from the shunting target cell to the optimized cell, and reduces a same frequency measurement threshold (sintrasearch)/a different frequency measurement threshold (sintersearch) of the optimized cell;
the message control module is configured to control a cell system message in an ad hoc network, where the control includes:
when the reselection parameter Qoffset2 of the optimized cell and the target cell for shunting is configured in busy, within a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the other optimized cells;
when the loads of other optimized cells are lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the other optimized cells and the shunting target cell to be configured in idle;
when the load of the optimized cell is lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the optimized cell and the shunting target cell to be configured when the parameters are idle;
or the like, or, alternatively,
when the reselection parameter Qoffset2 of the optimized cell and the target cell for shunting is configured as idle, within a preset time:
when the load of other optimized cells is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the other optimized cells;
when the loads of other optimized cells are lower than a second preset threshold value, adjusting the reselection parameters Qoffset2 of the other optimized cells and the shunting target cell to be configured in idle;
when the load of the optimized cell is higher than a first preset threshold value, not adjusting the reselection parameters Qoffset2 of the shunting target cell and the optimized cell;
and the shunting target cell is a neighboring cell of the optimized cell which meets the preset condition.
5. The apparatus of claim 4, further comprising a cell number control module configured to: and when the optimized cell has a plurality of adjacent cells meeting the preset condition, randomly selecting N cells from the plurality of adjacent cells meeting the preset condition as the shunting target cell.
6. The apparatus of claim 4, wherein the busy hour configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold value (sintrasearch)/different frequency measurement threshold value (sintersearch) value when a user can flow from the optimized cell to the shunting target cell;
the idle time configuration comprises: a reselection parameter Qoffset2 value and a same frequency measurement threshold (sintrasearch)/different frequency measurement threshold (sintersearch) value when the user cannot flow from the optimized cell to the shunting target cell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609072.0A CN106550414B (en) | 2015-09-22 | 2015-09-22 | Load balancing method and device |
| PCT/CN2016/076338 WO2016177109A1 (en) | 2015-09-22 | 2016-03-15 | Method, device, and storage medium for load balancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609072.0A CN106550414B (en) | 2015-09-22 | 2015-09-22 | Load balancing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106550414A CN106550414A (en) | 2017-03-29 |
| CN106550414B true CN106550414B (en) | 2021-06-22 |
Family
ID=57218117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510609072.0A Active CN106550414B (en) | 2015-09-22 | 2015-09-22 | Load balancing method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106550414B (en) |
| WO (1) | WO2016177109A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139332A (en) * | 2019-05-22 | 2019-08-16 | 努比亚技术有限公司 | A kind of residence reselecting of mobile terminal, mobile terminal and storage medium |
| CN112153654B (en) * | 2019-06-26 | 2022-03-25 | 大唐移动通信设备有限公司 | Method and device for controlling resources of cell |
| CN112566148B (en) * | 2019-09-26 | 2022-07-01 | 中国移动通信集团安徽有限公司 | Cell correlation degree-based equalization parameter optimization method and system |
| CN116347538B (en) * | 2023-03-28 | 2024-02-09 | 江苏亨鑫无线技术有限公司 | Load management method and system for idle state and non-active state terminals |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772081A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Method and system for dynamically balancing cell load in wireless network |
| CN102469517A (en) * | 2010-11-09 | 2012-05-23 | 中兴通讯股份有限公司 | Method of residence load balance between cells and apparatus thereof |
| CN102685814B (en) * | 2011-03-16 | 2016-12-21 | 上海无线通信研究中心 | The machinery of consultation of the medium and small interval mobile reselecting parameters of LTE network |
| CN102256307A (en) * | 2011-06-21 | 2011-11-23 | 北京邮电大学 | Method and system for balancing distributed load in LTE (Long Term Evolution) access network |
| CN103067972B (en) * | 2011-10-18 | 2018-06-12 | 中兴通讯股份有限公司 | Parameter processing method and device based on load-balancing mechanism |
| WO2013072271A1 (en) * | 2011-11-14 | 2013-05-23 | Nokia Siemens Networks Oy | Performing mobility load balancing and mobility robustness optimization between access nodes for only a subset of user equipment |
| CN103139837A (en) * | 2011-11-24 | 2013-06-05 | 鼎桥通信技术有限公司 | Method of dynamic adjustment of interoperation parameters |
| CN103298031B (en) * | 2012-02-29 | 2016-12-28 | 中兴通讯股份有限公司 | The load equalization method of wireless access interlayer and device |
| CN103079235B (en) * | 2013-01-16 | 2016-12-28 | 上海大唐移动通信设备有限公司 | The method and device of load balancing is realized in LTE system |
| CN103167557B (en) * | 2013-03-19 | 2015-07-08 | 东南大学 | Method for balancing load based on virtual cell breathing in long term evolution-advanced (LTE-A) system |
| CN104581826B (en) * | 2013-10-24 | 2018-10-16 | 中国移动通信集团北京有限公司 | A kind of dynamic load balancing method and system |
| CN104754543A (en) * | 2013-12-25 | 2015-07-01 | 中兴通讯股份有限公司 | Mobile parameter negotiation method and base station |
| CN105359576A (en) * | 2014-01-26 | 2016-02-24 | 华为技术有限公司 | Load balancing method and base station |
| CN104363619B (en) * | 2014-10-28 | 2017-09-19 | 北京邮电大学 | The load-balancing method and system of a kind of mobile radio communication |
-
2015
- 2015-09-22 CN CN201510609072.0A patent/CN106550414B/en active Active
-
2016
- 2016-03-15 WO PCT/CN2016/076338 patent/WO2016177109A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016177109A1 (en) | 2016-11-10 |
| CN106550414A (en) | 2017-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102415154B (en) | Automatic handover oscillation control | |
| US7864727B2 (en) | Congestion control method for wireless communication system and base station control apparatus | |
| CN102209338B (en) | Switching self-optimizing method for mobile communication network | |
| CN106550414B (en) | Load balancing method and device | |
| EP2689613A1 (en) | Network scaling for network energy savings | |
| CN105636056B (en) | Energy-saving method, device and system for optimizing spectrum resources | |
| KR101595682B1 (en) | Performing idle mode mobility measurements in a mobile communication network | |
| GB2532800A (en) | Telecommunications control with service aware optimization in a self-organizing network | |
| WO2016011752A1 (en) | Load balancing method and device | |
| CN102939776B (en) | The method that multiple parameter is set in radio telecommunication network | |
| CN106851680B (en) | Method and device for optimizing pilot frequency cell measurement starting threshold | |
| WO2016083524A1 (en) | Self-organizing network engine for mobility load balancing between wi-fi and cellular networks | |
| CN110651508A (en) | Method and apparatus for adjusting cell transmit power in a multi-carrier system | |
| KR20150109387A (en) | Device and method in radio communication system | |
| EP3043600A1 (en) | Method and apparatus for adjusting cell network camping policy | |
| US9030997B2 (en) | Load-adjustment factor notification method, data rate control (DRC)-pointing determination method, handover determination method and devices thereof | |
| CN111182604A (en) | Intelligent balancing method and system for LTE wireless network load | |
| CN104301937A (en) | Mobile load balancing realization method and base station | |
| CN112637915B (en) | Parameter processing method and device | |
| JP2013135282A (en) | Apparatus and method for handover parameter adjustment control, and computer program | |
| US10045289B2 (en) | Method and apparatus for controlling enabling of station | |
| CN103813387A (en) | Method and network system for balancing inter-cell load of LTE system | |
| WO2014019136A1 (en) | Terminal selection method, network entity, and system based on self-organizing networks | |
| CN109982395B (en) | Method and device for configuring switching parameters | |
| US9788214B2 (en) | Method for measurement control and base station using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |