CN103067972B - Parameter processing method and device based on load-balancing mechanism - Google Patents
Parameter processing method and device based on load-balancing mechanism Download PDFInfo
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Abstract
The invention discloses a kind of parameter processing method and device based on load-balancing mechanism, this method includes：Detect the performance state of Liang Ge neighboring communities；If the performance state of detection reaches handoff threshold, the handoff parameter of modification Liang Ge neighboring communities, and cache the modification relating value of handoff parameter；At the appointed time detect whether the corresponding performance state of modified handoff parameter meets recovery threshold requirement, if not, according to the modified handoff parameter of modification relating value rollback.In this way, solve the problems, such as can be so that system plays pendulum in the case that system does not still get a desired effect after adjusting handoff parameter in the relevant technologies, and then achieve the effect that preferably to safeguard and ensure system stability and robustness.
Description
Technical Field
The invention relates to the field of communication, in particular to a parameter processing method and device based on a load balancing mechanism.
Background
With the development of mobile communication technology, the load of cells is also increasing continuously. In order to reduce the pressure of a cell with a relatively heavy load and improve the resource utilization rate of a cell with a relatively light load, a mobility load balancing processing mechanism is used in the existing mobile communication system. A mobility load balancing processing mechanism for a serving cell with a heavy load in a mobile communication system generally adjusts mobility parameters of the serving cell and neighboring cells thereof, for example, an access device switches by using its own mobility so that the number of access devices of a cell with a high service load (i.e., load) is reduced, and the number of access devices of a cell with a low load (i.e., service load) is increased, thereby realizing load balancing of the entire system network.
However, there is no unified processing mechanism for adjusting mobility parameters, and particularly, after the mobility parameters are adjusted to reach a certain threshold, the system is in an unstable state under the condition that the system still does not achieve the expected equalization effect.
Aiming at the problem of how to better maintain and ensure the stability and the robustness of the system under the condition that the system still does not achieve the expected effect after the mobility parameter is adjusted in the related technology, an effective solution is not provided at present.
Disclosure of Invention
The invention provides a parameter processing method and device based on a load balancing mechanism, aiming at the problem that the system is in an unstable state under the condition that the system still does not achieve the expected effect after the mobility parameter is adjusted in the related art, and at least solving the problem.
According to an aspect of the present invention, a parameter processing method based on a load balancing mechanism is provided, including: detecting the performance states of two adjacent cells; if the detected performance state reaches a switching threshold, modifying the switching parameters of the two adjacent cells, and caching the modified correlation values of the switching parameters; and detecting whether the performance state corresponding to the modified switching parameter meets the requirement of a recovery threshold at the appointed time, and if not, returning the modified switching parameter according to the modified correlation value.
Preferably, the modified association value is the handover parameter before the modification of each of the two neighboring cells; the modified handover parameter according to the modified association value backoff comprises: and restoring the modified handover parameters of the two adjacent cells to the handover parameters before the modification.
Preferably, the modified association value is a modified offset value of each of the two neighboring cells; the modified handover parameter according to the modified association value backoff comprises: and incrementally modifying the modified switching parameters of the two adjacent cells according to the respective modification offset values to obtain the switching parameters before respective modification.
Preferably, one of the two neighboring cells is a serving cell, and the other is a neighboring cell of the serving cell; the modification offset value is cached in the serving cell; the modified handover parameter according to the modified association value backoff comprises: the serving cell incrementally modifies the modified offset value and the modified switching parameter to obtain the switching parameter before modification of the serving cell; the serving cell sends a back-off notification to the neighboring cell, wherein the back-off notification carries a modification offset value of the neighboring cell; and after receiving the rollback notification, the adjacent cell incrementally modifies the modified offset value of the adjacent cell and the modified switching parameter of the adjacent cell to obtain the switching parameter before modification of the adjacent cell.
Preferably, one of the two neighboring cells is a serving cell, and the other is a neighboring cell of the serving cell; the modification offset value is cached in the serving cell; the modified handover parameter according to the modified association value backoff comprises: the serving cell sends a back-off notification to the neighboring cell, wherein the back-off notification carries a modification offset value of the neighboring cell; after receiving the rollback notification, the neighboring cell incrementally modifies the modified offset value of the neighboring cell and the modified switching parameter of the neighboring cell to obtain the switching parameter before modification of the neighboring cell, and sends a rollback success response to the serving cell; and after receiving the response of successful rollback, the serving cell incrementally modifies the modified offset value and the modified switching parameter to obtain the switching parameter before modification of the serving cell.
Preferably, the performance status is a load difference or a load ratio of the two neighboring cells.
Preferably, at least one modified handover parameter in the two neighboring cells reaches a set maximum value.
According to another aspect of the present invention, there is provided a parameter processing apparatus based on a load balancing mechanism, including: the first detection module is used for detecting the performance states of two adjacent cells; a modification module, configured to modify the handover parameters of the two neighboring cells when the performance status detected by the first detection module reaches a handover threshold; the cache module is used for caching the modification correlation value of the switching parameter according to the switching parameter modified by the modification module; the second detection module is used for detecting whether the performance state corresponding to the modified switching parameter meets the requirement of a recovery threshold at the specified time; and a rollback module, configured to rollback the modified handover parameter according to the modified association value cached by the caching module when the detection result of the second detection module is negative.
Preferably, the cache module includes: a first caching unit, configured to cache the handover parameter before modification of each of the two neighboring cells as the modified association value; the rollback module comprises: a first rollback unit, configured to restore the handover parameters after respective modifications of the two neighboring cells to the handover parameters before respective modifications.
Preferably, the cache module includes: a second caching unit, configured to cache respective modification offset values of the two adjacent cells as the modification association values; the rollback module comprises: and a second rollback unit, configured to incrementally modify the handover parameters after respective modifications of the two neighboring cells according to respective modification offset values, so as to obtain the handover parameters before respective modifications.
By the method and the device, the modified correlation value is cached when the switching parameter is modified, so that the modified switching parameter can be backed off under the condition that the performance state of the system after the specified time does not achieve the expected effect, the problem that the system is in an unstable state under the condition that the system does not achieve the expected effect after the switching parameter (namely the mobility parameter) is adjusted in the related technology is solved, and the effects of better maintaining and ensuring the stability and the robustness of the system are further achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a parameter processing method based on a load balancing mechanism according to an embodiment of the present invention;
fig. 2 is a block diagram of a parameter processing apparatus based on a load balancing mechanism according to an embodiment of the present invention;
FIG. 3 is a first block diagram of a parameter processing apparatus based on a load balancing mechanism according to a preferred embodiment of the present invention;
FIG. 4 is a block diagram of a second exemplary embodiment of a parameter processing apparatus based on a load balancing mechanism;
fig. 5 is a schematic diagram of a connection relationship between a source-side cell and a target-side cell according to a preferred embodiment of the present invention;
fig. 6 is a schematic structural diagram of two adjacent cells in the same base station according to the second preferred embodiment of the present invention;
fig. 7 is a flowchart of mobility load balancing processing of two neighboring cells in the same base station according to the second preferred embodiment of the present invention;
fig. 8 is a schematic structural diagram of two neighboring cells between different base stations according to a third preferred embodiment of the present invention;
fig. 9 is a flowchart of mobility load balancing processing of two neighboring cells between different base stations according to a third preferred embodiment of the present invention, where the modification mode is to modify a target side cell handover parameter first and then modify a source side cell handover parameter;
fig. 10 is a flowchart of mobility load balancing processing of two neighboring cells between different base stations according to a third preferred embodiment of the present invention, where the modification mode is to modify a source-side cell handover parameter and then modify a target-side cell handover parameter.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a parameter processing method and device based on a load balancing mechanism, considering the condition that the system does not achieve the expected effect after the mobility parameter is adjusted. The scheme can be executed by a server which is connected with two adjacent cells together, and also can be executed by a base station of a certain cell in the two adjacent cells. The connection relationship between the devices or modules in the embodiments of the present invention may be a wired connection or a wireless connection, for example, a coupling connection. The method and apparatus are illustrated by the following specific examples.
This embodiment provides a parameter processing method based on a load balancing mechanism, which may be used for load balancing between two adjacent cells under the same base station, or may be used for load balancing between two adjacent cells under different base stations, where one of the two cells may be a serving cell and the other may be an adjacent cell, but the equivalent replacement thereof is also included in the protection scope of the present invention. Fig. 1 is a flowchart of a parameter processing method based on a load balancing mechanism according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S102, detecting the performance states of two adjacent cells;
step S104, if the performance state detected in step S102 reaches the switching threshold, modifying the switching parameters (namely mobility parameters) of two adjacent cells, and caching the modified associated values of the switching parameters;
and step S106, detecting whether the performance state corresponding to the modified switching parameter meets the requirement of a recovery threshold at the appointed time, and if not, returning the modified switching parameter according to the modified associated value cached in the step S104. The above-mentioned specified time may be timed by a timer, or may be set with a delay, but is not limited to these timing manners.
Through the steps, the modified correlation value is cached when the switching parameter is modified, so that the modified switching parameter can be backed off under the condition that the performance state of the system after the specified time does not achieve the expected effect, the problem that the system is in an unstable state under the condition that the system does not achieve the expected effect after the switching parameter is adjusted in the prior art is solved, the controllability and the stability of the relevant configuration parameters of the mobility load balancing function are higher, and the effects of better maintaining and ensuring the stability and the robustness of the system are achieved.
The performance status mentioned above may be a load difference or a load ratio of two adjacent cells, but is not limited thereto, and may also be a load quantity of each of the two adjacent cells, for example, as long as the performance status of the cell can be represented, and all of them should be within the protection scope of the present invention. For simplicity in practical operation, the performance status in the following embodiments is described by taking the load difference between two adjacent cells as an example.
As a preferred embodiment, in this embodiment, the handover parameter of at least one of the two neighboring cells reaches the set maximum value, based on which, in actual implementation, it may try to modify the two neighboring handover parameters multiple times to achieve the expected effect, and if the modified handover parameter reaches the set maximum value, the system still does not reach the expected effect, the fallback mechanism may be used for processing, at this time, a gradual fallback manner may be used for processing, for example, the modified association value is saved each time the handover parameter is modified, and the handover parameter is gradually backed down according to the saved modified association value, and finally the handover parameter is restored to the handover parameter that is not modified. By the implementation mode, the system can be safer and more stable in the process of balancing the loads of the two adjacent cells.
As a preferred embodiment, the modification associated value cached in step S104 may be a handover parameter before modification of each of two neighboring cells, or may be a modification offset value of each of the two neighboring cells. When the modified association value is the handover parameter before the modification of each of the two neighboring cells, the step S106 of returning back the modified handover parameter according to the modified association value may be to restore the modified handover parameter of each of the two neighboring cells to the handover parameter before the modification of each of the two neighboring cells; when the modified association value is the modification offset value of each of the two adjacent cells, the step S106 of returning back the modified handover parameter according to the modified association value may be to incrementally modify the modified handover parameter of each of the two adjacent cells according to the modification offset value to obtain the handover parameter before modification. The incremental modification is a reverse modification corresponding to the modification in step S104, and the incremental modification may be to increase or decrease the modification offset value. By the mode, the backspacing mode can be more flexible. However, the way of using the respective modification offset value as the modification correlation value is more saving in storage space, and therefore, the following embodiment will be described in more detail by taking the way of using the respective modification offset value as the modification correlation value, which is not intended to limit the scope of the present invention.
For convenience of description, one of the two cells is used as a serving cell, and the other is used as a neighboring cell of the serving cell, in which case the modification offset value in step S104 may be cached in the serving cell or in the neighboring cell, and of course, the modification offset value may also be cached in both the two cells.
When the modified offset value in step S104 is cached in the serving cell, the fallback manner in step S106 may be that the serving cell incrementally modifies the modified offset value and the modified handover parameter to obtain the handover parameter before modification of the serving cell; the service cell sends a rollback notification to the adjacent cell, wherein the rollback notification carries a modification offset value of the adjacent cell; and after the neighbor cell receives the rollback notification, incrementally modifying the modified offset value of the neighbor cell and the modified switching parameter of the neighbor cell to obtain the switching parameter before the modification of the neighbor cell.
When the modified offset value in step S104 is cached in the serving cell, the fallback manner in step S106 may also be that the serving cell first sends a fallback notification to the neighboring cell, where the fallback notification carries the modified offset value of the neighboring cell; after receiving the rollback notification, the neighboring cell incrementally modifies the modified offset value of the neighboring cell and the modified switching parameter of the neighboring cell to obtain the switching parameter before modification of the neighboring cell, and sends a rollback success response to the serving cell; after the service cell receives the response of successful rollback, the modification deviation value of the service cell and the modified switching parameter are subjected to incremental modification to obtain the switching parameter before the service cell is modified. Through the steps, the rollback mode of the switching parameter can be more reliable, and meanwhile, the rollback processing can be more flexible due to the multiple rollback modes.
In this embodiment, a parameter processing apparatus based on a load balancing mechanism is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description of the apparatus is omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. The parameter processing device based on the load balancing mechanism can be arranged on a server connected with two adjacent cells, or can be arranged on a base station where the two adjacent cells are located, if the two adjacent cells belong to the same base station, the parameter processing device based on the load balancing mechanism can be arranged on the base station, if the two adjacent cells belong to different base stations, the parameter processing device can be arranged on the respective base station, and of course, the parameter processing device can also be flexibly arranged according to needs. Fig. 2 is a block diagram of a parameter processing apparatus based on a load balancing mechanism according to an embodiment of the present invention, and as shown in fig. 2, the apparatus includes: a first detection module 202, a modification module 204, a caching module 206, a second detection module 208, and a rollback module 210. Wherein,
a first detecting module 202, configured to detect performance states of two neighboring cells; a modifying module 204, connected to the first detecting module 202, configured to modify the handover parameters of the two neighboring cells when the performance status detected by the first detecting module 202 reaches a handover threshold; a cache module 206, connected to the modification module 204, for caching the modified association value of the handover parameter according to the handover parameter modified by the modification module 204; a second detecting module 208, connected to the modifying module 204, for detecting whether the performance status corresponding to the modified handover parameter meets the requirement of the recovery threshold at a specified time; and a rollback module 210, connected to the caching module 206 and the second detecting module 208, configured to rollback the modified handover parameter according to the modified association value cached by the caching module 206 when the detection result of the second detecting module 208 is negative.
Fig. 3 is a first block diagram of a parameter processing apparatus based on a load balancing mechanism according to a preferred embodiment of the present invention, and as shown in fig. 3, the cache module 206 may include: a first caching unit 2062, configured to cache, as modification association values, the handover parameters before modification of each of the two neighboring cells; the fallback module 210 may include: a first fallback unit 2102 configured to restore the modified handover parameters of the two neighboring cells to the unmodified handover parameters.
Fig. 4 is a block diagram of a second configuration of the parameter processing apparatus based on the load balancing mechanism according to the preferred embodiment of the present invention, and as shown in fig. 4, the cache module 206 may also include: a second caching unit 2064, configured to cache respective modification offset values of two adjacent cells as modification association values; the rollback module 210 may also include: a second rollback unit 2104, configured to incrementally modify the modified handover parameters of the two neighboring cells according to the respective modification offset values, so as to obtain the handover parameters before the respective modifications.
For convenience of description, one of the two neighboring cells is a serving cell, and the other is a neighboring cell of the serving cell; based on this, the second backoff unit 2104 may be disposed in a base station where a serving cell is located, in this case, the second backoff unit 2104 includes: the first modification subunit is used for incrementally modifying the modification deviation value of the serving cell and the modified handover parameter to obtain the handover parameter before modification of the serving cell; a sending subunit, connected to the modifying subunit, and configured to send a rollback notification to the neighboring cell, where the rollback notification carries a modification offset value of the neighboring cell; of course, correspondingly, the base station of the neighboring cell is also provided with the second backoff unit 2104, in this case, the second backoff unit 2104 of the neighboring cell includes: a second modifying subunit 21043, connected to the sending subunit, configured to, after receiving the rollback notification, incrementally modify the modified offset value of the neighboring cell and the modified handover parameter thereof, so as to obtain the handover parameter before modification of the neighboring cell.
In practical implementation, the back-off sequence of the serving cell and the neighbor cell handover parameters may be flexibly set, for example: the serving cell may first notify the neighboring cell to perform fallback, and after the fallback, the serving cell performs handover parameter fallback, thereby ensuring parameter synchronization between the serving cell and the neighboring cell. Based on this, the base station where the serving cell and the neighboring cell are located in this embodiment may set the back-off module 210 at the same time; specifically, the back-off module 210 on the base station where the serving cell is located includes: a sending unit, configured to send a rollback notification to a neighboring cell, where the rollback notification carries a modification offset value of the neighboring cell; the backspacing unit is used for incrementally modifying the modification offset value of the serving cell and the modified switching parameter after receiving a backspacing success response returned by the adjacent cell to obtain the switching parameter before modification of the serving cell; the back-off module 210 on the base station where the neighboring cell is located includes: the parameter recovery unit is used for incrementally modifying the modified offset value of the adjacent cell and the modified switching parameter thereof after receiving the rollback notification to obtain the switching parameter before modification of the adjacent cell; and the response unit is connected with the parameter recovery unit and used for sending a rollback success response to the serving cell after the parameter recovery unit obtains the switching parameters before the modification of the neighboring cell.
Preferably, the performance status detected by the first detecting module 202 is a load difference or a load ratio of two adjacent cells.
At least one modified handover parameter in two adjacent cells in the modification module 204 reaches a set maximum value.
Through the device, the modified associated value is cached when the switching parameter is modified, so that the modified switching parameter can be backed off under the condition that the performance state of the system after the specified time does not achieve the expected effect, the problem that the system is in an unstable state under the condition that the system does not achieve the expected effect after the switching parameter is adjusted in the prior art is solved, the controllability and the stability of the relevant configuration parameters of the mobility load balancing function are higher, and the effects of better maintaining and ensuring the stability and the robustness of the system are achieved.
The following description is given in conjunction with the preferred embodiments, which combine the above embodiments and their preferred embodiments.
Example one
In the preferred embodiment, an implementation method with a fallback function based on a mobility load (i.e. load) balancing mechanism is provided. The implementation method specifically comprises the following steps: after modifying the handover parameters, the modification of the handover parameters is maintained if the performance state of the system reaches an expected (i.e., a recovery threshold is reached) within a specified time (e.g., a specified time period or time window). If the performance state of the system still does not reach the expectation in the period, a backspace mechanism for modifying parameters is started, and the previously cached modified configuration is backspaced according to a specified range, so that the system is restored to the configuration state before modification. The preferred embodiment mainly comprises the following steps:
step S2, periodically detect the load (i.e. load) status of the system network, and dynamically monitor and update the load status of one of the two neighboring cells (in this embodiment, the serving cell is taken as an example) as the processing cell.
Step S4, when the load status of the serving cell and the neighboring cell reaches a certain load difference, or reaches a certain load ratio or other performance status parameters, the serving cell starts a mobility load balancing function, modifies the handover parameters of the serving cell and the selected neighboring cell according to a predetermined policy, and may perform caching processing on the parameters before modification. The predetermined policy may be to modify a handover parameter of the serving cell so that the access device residing in the serving cell is easier to handover out, and modify a handover parameter of the corresponding neighboring cell so that the access device is easier to handover in, or may be an equivalent replacement of the predetermined policy.
In step S6, after determining that the handover parameters of the serving cell and the neighboring cell are modified, the control module (i.e., the second detection module 208) performs one or more time window effect monitoring (for example, it may be detected at a time point of a system cycle whether the performance states of the serving cell and the neighboring cell reach a recovery threshold), and dynamically updates the current load state information of the serving cell and the neighboring cell.
In step S8, if it is detected that the serving cell load status information is significantly improved (for example, when a predetermined recovery threshold is met), it is determined that the mobility load balancing function has the effect that should be achieved, and the current modification of the handover parameter is saved.
Step S10, if it is detected that the serving cell load status information is not significantly improved, that is, the requirement of the recovery threshold is not satisfied, it is determined that the mobility load balancing function cannot achieve the desired effect, and it is difficult to satisfy the requirement of the entire system for load balancing by setting according to the handover parameter, so that the previously modified handover parameter should be rolled back.
By adopting the processing mechanism of the preferred embodiment, under the condition that the processing of the load balancing function does not achieve the expected effect, the robustness of the system and the stability of the configuration data are ensured by a processing mode of backing off the modified switching parameters.
Example two
In this embodiment, a source-side cell is used as a serving cell, and a target-side cell is used as a neighboring cell of the serving cell; accordingly, the source-side processing unit refers to a foreground subsystem that processes the source-side cell, and the target-side processing unit refers to a foreground subsystem that processes the target-side cell. Fig. 5 is a schematic diagram of a connection relationship between a source-side cell and a target-side cell according to a preferred embodiment of the present invention, as shown in fig. 5, the schematic diagram includes a source-side cell 501 including a source-side processing unit and a target-side cell 502 including a target-side processing unit. The source-side cell 501 and the target-side cell 502 may belong to the same base station or may belong to different base stations.
The preferred embodiment is described by taking an example in which the serving cell and its neighboring cells are in the same base station. Fig. 6 is a schematic structural diagram of two adjacent cells in the same base station according to a second preferred embodiment of the present invention, as shown in fig. 6, the schematic structural diagram includes: a source side execution module 603 corresponding to the source side cell and a target side execution module 606 corresponding to the target side cell; the base station further comprises; the base station comprises an algorithm module 601, a measurement module 602, an interface module 604, and a background 605, wherein the background 605 is a background processing unit of a common base station of a source-side cell and a target-side cell. In the preferred embodiment, the interfaces between the base station where the two cells are located and the background adopt a general interface. In the process of modifying and backing-off the handover parameters, the base station sends a notification message to the background 605, and the background 605 modifies the relevant parameters and then synchronizes to the source-side execution module 603 or the target-side execution module 606 of the foreground, so as to ensure the consistency of foreground and background data. The algorithm module 601 and the measurement module 602 perform the functions of the first detection module 202 or the second detection module 208, and the background 605 performs the functions of the modification module 204, the cache module 206, and the rollback module 210.
The module of fig. 6 is further described below with reference to specific embodiments. Fig. 7 is a flowchart of mobility load balancing processing of two neighboring cells in the same base station according to the second preferred embodiment of the present invention, and as shown in fig. 7, the flowchart includes the following steps (step S702 to step S716):
step S702, judging whether the function period is reached, if so, executing step S704; if not, continuing to monitor and repeatedly executing the step.
The function period refers to that the measurement module 602 monitors whether the duration of two neighboring cells reaches a set time, for example, a timer with a mobility load balancing function is periodically started in the system, the measurement module 602 always measures and updates load information of a source side cell and a neighboring cell thereof, the source side execution module 603 determines whether the timer expires, and if the timer expires, the step S704 is performed.
However, the present embodiment only uses the source side as the initiator side for explanation, but the equivalent execution manner, for example, the target side execution module 606 as the initiator side for executing the following steps, should also be included in the protection scope of the present invention.
Step S704, the source side execution module 603 first calls the measurement module 602 to detect the load condition of the system, and then calls the algorithm module 601 to perform algorithm decision on the result obtained by measurement by the measurement module 602, and decides whether the result meets a set algorithm decision threshold for mobility load balancing, in this embodiment, it is decided whether the load difference between the serving cell and the neighboring cell reaches a condition threshold, if not, the timer is restarted, and step S702 is entered; if so, the process proceeds to step S706.
In step S706, the source side execution module 603 notifies the background 605 to modify and cache the cell handover parameter through the interface module 604 (for example, a modification flag may be made at a value before the handover parameter is modified, or an offset value of the modification may also be stored), after the modification is successful, the background 605 returns an acknowledgement message, and then performs step S708.
In step S708, after obtaining the confirmation message, the source side execution module 603 notifies the corresponding neighboring cell target side execution module 606 through the interface module 604, and the execution module notifies the background 605 to modify and cache the handover parameter through the interface module 604 (when the modified offset value is stored in the cache in step S706, the modified offset value may be marked only by the modification at the value before the handover parameter is modified, and when the modified offset value is marked by the modification at the value before the handover parameter is modified in the cache in step S706, the modified offset value is stored), and step S710 is executed after the completion.
The order of step S706 and step S708 may be changed. Step S710, after the switching parameter modification of step S708 is completed, the source side execution module 603 or the target side execution module 606 starts a timer for effect determination, and monitors whether the timer for effect determination expires (i.e. whether a monitoring time window arrives), if the timer expires, step S712 is performed; if not, continuing to monitor and repeating the step.
In step S712, the source side execution module 603 controls the measurement module 602 to monitor the load condition of the network in real time, and controls the algorithm module 601 to determine whether the result measured by the measurement module 602 meets an expected condition (e.g., meets a recovery threshold), which indicates that the load status of the current serving cell is significantly improved, if yes, then step S714 is executed, otherwise step S716 is executed.
In step S714, the source side execution module 603 controls the interface module 604 to notify the background 605 to keep the modified parameter value of the previous switching parameter.
In step S716, the source side execution module 603 controls the interface module 604 to notify the background 605 to perform rollback processing according to the previous modification flag or modification offset value, and after the background 605 returns a rollback success response, the source side execution module 603 sends a rollback message to the target side execution module 606 of the corresponding neighboring cell to notify the target side execution module 606 of performing rollback processing on the relevant modification parameters, so as to recover to the original parameter configuration, where the rollback message carries the modification associated value cached in the previous S706.
Of course, in steps S714 and S716, the source side execution module 603 or the target side execution module 606 may notify the corresponding neighboring cell to perform the rollback processing first, and perform the rollback processing of the own after receiving the response message that the other side successfully rolls back.
The embodiment improves the modification process of the handover parameters of two adjacent cells under the same base station, and caches the modified correlation values when the handover parameters are modified, so that the modified handover parameters can be backed off when the system performance state after the specified time does not achieve the expected effect, the problem that the system is in an unstable state when the system does not achieve the expected effect after the handover parameters are adjusted in the prior art is solved, the controllability and the stability of the configuration parameters related to the mobility load balancing function are higher, and the effects of better maintaining and ensuring the stability and the robustness of the system are achieved.
EXAMPLE III
The present preferred embodiment is described by taking as an example a case where a serving cell (also referred to as a source-side cell) and its neighboring cell (also referred to as a target-side cell) are located between different base stations. Fig. 8 is a schematic structural diagram of two neighboring cells between different base stations according to a third preferred embodiment of the present invention, as shown in fig. 8, the schematic structural diagram includes: an algorithm module 801, a measurement module 802, a source side control module 803, a source side interface module 804, a source side background 805, a target side control module 806, a target side interface module 807, and a target side background 808. The algorithm module 801 and the measurement module 802 may also be located in the source cell; in the preferred embodiment, the interfaces of the base station and the background where the two cells are located are both universal interfaces. In the modification and rollback processing processes of the switching parameters, the base station where the cell is located sends a notification message to the corresponding background, and the background modifies the relevant parameters and then synchronizes to the control module corresponding to the foreground, so as to ensure the consistency of the data of the foreground and the background.
The module of fig. 8 is further described below with reference to specific embodiments. Fig. 9 is a flowchart of mobility load balancing processing between different base stations for two neighboring cells according to a third preferred embodiment of the present invention, where the modification mode is to modify a target side cell handover parameter first and then modify a source side cell handover parameter, and as shown in fig. 9, the flowchart includes the following steps (step S902 to step S916):
step S902, judging whether the function period is reached, if so, executing step S904; if not, continuing to monitor and repeatedly executing the step.
The function period refers to whether the duration of the two neighboring cells reaches a set time or not, for example, a timer of a mobility load balancing function is periodically started in the system, and the measurement module 802 always performs measurement and update of load information of the source cell and the neighboring cells thereof. The source side control module 803 determines whether the timer has expired, and if so, proceeds to step S904.
Step S904, the source side control module 803 first invokes the measurement module 802 to detect the load condition of the system, and then invokes the algorithm module 801 to perform algorithm decision on the result obtained by measurement by the measurement module 802, and decides whether the result meets a set algorithm decision threshold for mobility load balancing, in this embodiment, it is decided whether the load difference between the serving cell and the neighboring cell reaches a condition threshold, if not, the timer is restarted, and step S902 is entered; if so, the process proceeds to step S906.
However, the present embodiment is only explained by taking the source side as the initiator side, but equivalent execution manners thereof, for example, the target side control module 806 is taken as the initiator side to execute the following steps, which should also be included in the protection scope of the present invention.
In step S906, the source side control module 803 notifies the target side control module 806 of the corresponding neighboring cell to modify the cell switching parameter through the source side interface module 804 and the target side interface module 807, the target side control module 806 initiates switching parameter modification to the target side background 808 through the target side interface module 807, and after receiving an acknowledgment message returned by the target side background 808, feeds back the acknowledgment message to the source side control module 803 through the target side interface module 807 and the source side interface module 804, and then proceeds to step S908.
In step S908, after receiving the acknowledgement message from the target side, the source side control module 803 notifies the source side background 805 through the source side interface module 804 to modify the switching parameter, and performs cache processing on the modified association value, where the direction and the size of the modification may be calculated by the algorithm module 801, and then the process proceeds to step S910 after the direction and the size are successfully calculated.
Step S910, after completing the modification of the switching parameter in step S908, the source side control module 803 starts a timer for effect decision, and monitors whether the timer for effect decision expires (i.e. whether the monitoring time window expires), if the timer expires, then step S912 is entered; if not, continuing to monitor and repeating the step.
In step S912, the source side control module 803 controls the measurement module 802 to monitor the load condition of the network in real time, and controls the algorithm module 801 to determine whether the measurement result of the measurement module 802 meets an expected condition, if yes, it indicates that the load status of the current serving cell is significantly improved, and then step S914 is executed, otherwise step S916 is executed.
In step S914, the source-side control module 803 notifies the target-side control module 806 of the retention of the parameter value after the previous handover parameter modification through the source-side interface module 804 and the target-side interface module 807, and controls the source-side background 805 to retain the parameter value after the previous handover parameter modification through the source-side interface module 804; the target side control module 806 controls the target side background 808 to perform the process of reserving the modified parameter value through the target side interface module 807.
Step S916, the source side control module 803 sends, through the source side interface module 804 and the target side interface module 807, a rollback message for performing rollback processing by the target side control module 806 according to the previous modification flag or modification offset value, where the rollback message carries the modification association value cached in S908 before; the target side control module 806 initiates a rollback processing to the target side background 808 through the target side interface module 807 according to the modified associated value cached in the S908 carried in the rollback message, and returns a rollback success response to the source side control module 803 after success; after receiving the successful response of rollback, the source side control module 803 controls the source side background 805 to perform rollback processing according to the previous modification flag or modification offset value through the source side interface module 804, thereby recovering the original parameter configuration.
Fig. 10 is a flowchart of mobility load balancing processing of two neighboring cells between different base stations according to a third preferred embodiment of the present invention, where the modification is to modify a source-side cell handover parameter and then modify a target-side cell handover parameter, and as shown in fig. 10, the flowchart includes: step S1002 to step S1016, the specific steps are as follows:
step S1002, judging whether the function period is reached, if so, executing step S1004; if not, continuing to monitor and repeatedly executing the step.
The function period refers to whether the duration of the two neighboring cells reaches a set time or not, for example, a timer of a mobility load balancing function is periodically started in the system, and the measurement module 802 always performs measurement and update of load information of the source cell and the neighboring cells thereof. The source side control module 803 determines whether the timer has expired, and if so, it proceeds to step S1004.
Step S1004, the source side control module 803 first invokes the measurement module 802 to detect the load condition of the system, and then invokes the algorithm module 801 to perform algorithm decision on the result obtained by measurement by the measurement module 802, and decides whether the measurement result meets a set algorithm decision threshold for mobility load balancing, in this embodiment, it is decided whether the load difference between the serving cell and the neighboring cell reaches a condition threshold, if not, the timer is restarted, and step S1002 is entered; if so, the process proceeds to step S1006.
In step S1006, the source side control module 803 notifies the source side background 805 through the source side interface module 804 to modify the switching parameter, and performs cache processing on the modified association value, and after the modification is successful, the source side background 805 returns an acknowledgement message to the source side control module 803, where the direction and the magnitude of the modification of the switching parameter may be calculated by the algorithm module 801.
Step S1008, after receiving the confirmation message, the source side control module 803 notifies the target side control module 806 of the corresponding neighboring cell to modify the cell switching parameter through the source side interface module 804 and the target side interface module 807, the target side control module 806 initiates the switching parameter modification to the target side background 808 through the target side interface module 807, and after the modification is successful, the process goes to step S1010.
Step S1010, after the switching parameter modification in step S1008 is completed, the source side control module 803 starts a timer for effect decision, and monitors whether the timer for effect decision expires, and if the timer expires, the process goes to step S1012; if not, continuing to monitor and repeating the step.
In step S1012, the source side control module 803 controls the measurement module 802 to monitor the load condition of the network in real time, and controls the algorithm module 801 to determine whether the measurement result of the measurement module 802 meets an expected condition, if yes, it indicates that the load status of the current serving cell is significantly improved, and then step S1014 is executed, otherwise step S1016 is executed.
In step S1014, the source-side control module 803 controls the source-side background 805 to retain the previous modified parameter value of the handover parameter through the source-side interface module 804, and the source-side control module 803 further notifies the target-side control module 806 through the source-side interface module 804 and the target-side interface module 807 to retain the previous modified parameter value of the handover parameter, and the target-side control module 806 controls the target-side background 808 to retain the modified parameter value through the target-side interface module 807.
Step S1016, the source side control module 803 controls the source side background 805 to perform rollback processing according to the previous modification flag or modification offset value through the source side interface module 804, and sends a rollback message for performing rollback processing according to the previous modification flag or modification offset value to the target side control module 806 through the source side interface module 804 and the target side interface module 807, where the rollback message carries the modification associated value cached in S1006 before; the target side control module 806 initiates a rollback processing to the target side background 808 through the target side interface module 807 according to the modified association value cached in S1006 carried in the rollback message, thereby restoring to the original parameter configuration.
The embodiment improves the switching parameter modification process of two adjacent cells between different base stations, and caches the modified correlation value when modifying the switching parameter, so that the modified switching parameter can be backed off when the system performance state after the specified time does not achieve the expected effect, the problem that the system is in an unstable state when the system does not achieve the expected effect after the switching parameter is adjusted in the prior art is solved, the controllability and stability of the related configuration parameters of the mobility load balancing function are higher, and the effects of better maintaining and ensuring the stability and robustness of the system are achieved.
From the above description, it can be seen that the present invention solves the problem that the system is in an unstable state in the case that the system still does not achieve the expected effect after the switching parameter is adjusted in the load balancing processing mechanism in the related art, and further achieves the effect of effectively maintaining and ensuring the stability and robustness of the system.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a memory device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A parameter processing method based on a load balancing mechanism is characterized by comprising the following steps:
detecting the performance states of two adjacent cells;
if the detected performance state reaches a switching threshold, modifying the switching parameters of the two adjacent cells, and caching the modified correlation values of the switching parameters;
detecting whether the performance state corresponding to the modified switching parameter meets the requirement of a recovery threshold at a specified time, and if not, returning the modified switching parameter according to the modified correlation value;
wherein the modification association value is a modification offset value of each of the two neighboring cells; the modified handover parameter according to the modified association value backoff comprises: incrementally modifying the modified switching parameters of the two adjacent cells according to the respective modification offset values to obtain the switching parameters before respective modification; one of the two adjacent cells is a service cell, and the other one is an adjacent cell of the service cell; the modification offset value is cached in the serving cell; the modified handover parameter according to the modified association value backoff comprises: the serving cell incrementally modifies the modified offset value and the modified switching parameter to obtain the switching parameter before modification of the serving cell; the serving cell sends a back-off notification to the neighboring cell, wherein the back-off notification carries a modification offset value of the neighboring cell; after the neighbor cell receives the rollback notification, incrementally modifying the modified offset value of the neighbor cell and the modified switching parameter of the neighbor cell to obtain a switching parameter before modification of the neighbor cell; or,
the modified handover parameter according to the modified association value backoff comprises: the serving cell sends a back-off notification to the neighboring cell, wherein the back-off notification carries a modification offset value of the neighboring cell; after receiving the rollback notification, the neighboring cell incrementally modifies the modified offset value of the neighboring cell and the modified switching parameter of the neighboring cell to obtain the switching parameter before modification of the neighboring cell, and sends a rollback success response to the serving cell; and after receiving the response of successful rollback, the serving cell incrementally modifies the modified offset value and the modified switching parameter to obtain the switching parameter before modification of the serving cell.
2. The method of claim 1, wherein the performance status is a load difference or a load ratio of the two neighboring cells.
3. The method according to claim 1, wherein the at least one modified handover parameter in the two neighboring cells reaches a set maximum value.
4. A parameter processing apparatus based on a load balancing mechanism, comprising:
the first detection module is used for detecting the performance states of two adjacent cells;
a modification module, configured to modify the handover parameters of the two neighboring cells when the performance status detected by the first detection module reaches a handover threshold;
the cache module is used for caching the modification correlation value of the switching parameter according to the switching parameter modified by the modification module;
the second detection module is used for detecting whether the performance state corresponding to the modified switching parameter meets the requirement of a recovery threshold at the specified time;
a rollback module, configured to rollback the modified handover parameter according to the modified association value cached by the caching module if the detection result of the second detection module is negative;
wherein the modification association value is a modification offset value of each of the two neighboring cells; the rollback module comprises: a rollback unit, configured to incrementally modify the handover parameters after respective modifications of the two neighboring cells according to respective modification offset values, so as to obtain the handover parameters before respective modifications; the backspacing module is further configured to incrementally modify a modification offset value of the serving cell and the modified handover parameter to obtain a handover parameter before modification of the serving cell; sending a rollback notification to a neighboring cell, wherein the rollback notification carries a modification offset value of the neighboring cell; after receiving the rollback notification, incrementally modifying the modified offset value of the neighboring cell and the modified switching parameter of the neighboring cell to obtain a switching parameter before modification of the neighboring cell; or,
the rollback module is further configured to send a rollback notification to the neighboring cell, where the rollback notification carries a modification offset value of the neighboring cell; after receiving the rollback notification, incrementally modifying the modified offset value of the neighboring cell and the modified switching parameter to obtain the switching parameter before modification of the neighboring cell, and sending a rollback success response to the serving cell; and after receiving the response of successful rollback, incrementally modifying the modified offset value and the modified switching parameter to obtain the switching parameter before modification of the serving cell.
5. The apparatus of claim 4,
the cache module comprises: a first caching unit, configured to cache the handover parameter before modification of each of the two neighboring cells as the modification correlation value.
6. The apparatus of claim 4,
the cache module comprises: a second caching unit, configured to cache, as the modification association value, the modification offset value of each of the two adjacent cells.
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| CN102065478A (en) * | 2009-11-13 | 2011-05-18 | 大唐移动通信设备有限公司 | Automatic optimization method and device of network load regulation target |
| CN102143515A (en) * | 2010-01-29 | 2011-08-03 | 中国移动通信集团公司 | Wireless network switchover optimizing system and method |
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| CN102065478A (en) * | 2009-11-13 | 2011-05-18 | 大唐移动通信设备有限公司 | Automatic optimization method and device of network load regulation target |
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