CN113347668B - Load balancing method and device, electronic equipment and storage medium - Google Patents

Load balancing method and device, electronic equipment and storage medium Download PDF

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CN113347668B
CN113347668B CN202010099889.9A CN202010099889A CN113347668B CN 113347668 B CN113347668 B CN 113347668B CN 202010099889 A CN202010099889 A CN 202010099889A CN 113347668 B CN113347668 B CN 113347668B
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CN113347668A (en
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应晖
项阳
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a load balancing method, a device, electronic equipment and a storage medium, wherein the load balancing method comprises the following steps: determining the number of target user terminals (UE) needing to be reselected to a low-load cell in a current high-load cell and the number of newly-increased idle-state UEs of the current high-load cell in a current balance execution period, and determining whether the number of the newly-increased idle-state UEs is greater than or equal to the number of the target UEs; and if the number of the newly added idle state UEs is larger than or equal to the number of the target UEs, sending a release message carrying reselection priority information to each newly added idle state UE so that each newly added idle state UE reselects the low-load cell based on the reselection priority information, otherwise, adjusting the condition for triggering the UE to enter the idle state in the current equalization execution period so as to increase the number of the idle state UEs and make the number of the idle state UEs approach the number of the target UEs. The invention can ensure the network service quality and the user experience and reduce the resource consumption while realizing the load balance.

Description

Load balancing method and device, electronic equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a load balancing method and apparatus, an electronic device, and a storage medium.
Background
With the continuous development of network technology, the amount of network data access is not increased, and in order to improve the quality of network service, an operator may generally allocate different access requests to different cells by a load balancing method, and the different cells provide network services for users.
At present, in a multi-carrier hierarchical networking scenario of a current network (i.e., a hierarchical networking network composed of overlapping or partially overlapping cells in the same base station, or a hierarchical networking network composed of respective cells of different base stations at the same site, which are also cells with overlapping or partially overlapping coverage), common reselection priorities of cells at different frequency points are generally configured as high-and-low priority policies, and a high-priority cell is easily overloaded, even if the priorities are the same, a high load still occurs in part of the cells due to differences between coverage signals and traffic models, so that a connected UE (User Equipment, User terminal) of a cell with a higher load (hereinafter, referred to as a high-load cell) is generally switched to a cell with a lower load (hereinafter, referred to as a low-load cell) to implement load balancing. Specifically, first, the number of UEs that need to be switched to the low-load cell (which may be referred to as the number of UEs that need to be switched) may be determined according to the resource (such as the physical resource block occupancy, the number of UEs, etc.) occupied by the high-load cell and the low-load cell. Then, a number of connected UEs (i.e., UEs performing data transmission) requiring UE switching may be selected from the high-load cell, and the common priority information may be broadcast to all connected UEs requiring UE switching, so that the connected UEs are switched to the low-load cell.
In the prior art, the public priority information is broadcasted to switch the connected UE to the low-load cell, which may reduce the service transmission rate to a certain extent, thereby affecting the network service quality and the user experience.
Disclosure of Invention
Because the existing methods have the above problems, embodiments of the present invention provide a load balancing method and apparatus, an electronic device, and a storage medium.
In a first aspect, an embodiment of the present invention provides a load balancing method, including:
determining the number of target User Equipment (UE) needing to be reselected to a low-load cell in a current high-load cell and the number of newly-increased idle-state UE of the current high-load cell in a current balance execution period, and determining whether the number of the newly-increased idle-state UE is greater than or equal to the number of the target UE;
and if the number of the newly added idle state UEs is larger than or equal to the number of the target UEs, sending a release message carrying reselection priority information to each newly added idle state UE so that each newly added idle state UE reselects the low-load cell based on the reselection priority information.
Optionally, after determining whether the number of the newly increased idle UEs is greater than or equal to the target number of UEs, the method further includes:
and if the number of the newly-added idle state UE is less than the number of the target UE, adjusting the condition for triggering the UE to enter the idle state in the current balance execution period.
Optionally, the new idle-state UE number refers to the number of UEs released by the current high-load cell in the current balancing execution period;
the reselection priority information is a dedicated priority information element for indicating that the low-loaded cell has a higher priority than the current high-loaded cell.
Optionally, the equalization execution cycle includes a plurality of sub-cycles;
the determining that the number of the newly increased idle-state UEs in the current equalization execution period of the current high-load cell and determining whether the number of the newly increased idle-state UEs is greater than or equal to the number of the target UEs includes:
detecting the number of first idle state UE newly added in the first sub-period of the current equalization execution period, and determining whether the number of the first idle state UE newly added is greater than or equal to the number of the target UE;
if the number of the newly added first idle-state UE is smaller than the target UE number, detecting the number of the newly added second idle-state UE in a second sub-period, and determining the sum of the number of the first idle-state UE and the number of the second idle-state UE as the second newly added idle-state UE number;
determining whether the second newly increased idle-state UE number is greater than or equal to the target UE number, and if the second newly increased idle-state UE number is less than the target UE number, determining whether the second sub-cycle is the last sub-cycle in the current equalization execution cycle;
if the second sub-period is not the last sub-period in the current equalization execution period, determining the number of newly increased third idle state UEs in the next sub-period adjacent to the second sub-period;
and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
Optionally, after determining whether the number of the newly increased idle UEs is greater than or equal to the target number of UEs, the method further includes:
and if the current equalization execution period is finished and the number of the newly-increased idle-state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell needing to be reselected to the current time in the high-load cell based on the current time and the number of the newly-increased idle-state UE of the high-load cell at the current time in the new equalization execution period.
Optionally, the sending a release message carrying reselection priority information to each newly added idle UE includes:
setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information;
and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
Optionally, the method further includes:
monitoring the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to a preset maximum reselection duration;
if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the reselection of the currently newly added idle-state UE fails.
In a second aspect, an embodiment of the present invention further provides a load balancing apparatus, including a UE quantity determining module and a cell reselection module, where:
the UE quantity determining module is used for determining the quantity of target user terminals (UE) needing to be reselected to a low-load cell in a current high-load cell and the quantity of newly-increased idle-state UE of the current high-load cell in a current balance execution period, and determining whether the quantity of the newly-increased idle-state UE is greater than or equal to the quantity of the target UE;
and the cell reselection module is configured to send a release message carrying reselection priority information to each newly added idle-state UE if the number of the newly added idle-state UEs is greater than or equal to the number of the target UEs, so that each newly added idle-state UE reselects the low-load cell based on the reselection priority information.
Optionally, the apparatus further includes an adjusting module, configured to:
and if the number of the newly-added idle state UE is less than the number of the target UE, adjusting the condition for triggering the UE to enter the idle state in the current balance execution period.
Optionally, the new idle-state UE number refers to the number of UEs released by the current high-load cell in the current balancing execution period;
the reselection priority information is a dedicated priority information element for indicating that the low-loaded cell has a higher priority than the current high-loaded cell.
Optionally, the equalization execution cycle includes multiple sub-cycles;
the UE number determining module is configured to:
detecting the number of first idle state UE which is newly added in the first sub-period of the current balance execution period, and determining whether the number of the first idle state UE which is newly added is greater than or equal to the number of the target UE;
if the number of the newly added first idle-state UEs is smaller than the number of the target UEs, detecting the number of the newly added second idle-state UEs in a second sub-period, and determining the sum of the number of the first idle-state UEs and the number of the second idle-state UEs as the number of the second newly added idle-state UEs;
determining whether the second newly increased idle-state UE quantity is greater than or equal to the target UE quantity, and if the second newly increased idle-state UE quantity is less than the target UE quantity, determining whether the second sub-cycle is the last sub-cycle in the current equalization execution cycle;
if the second sub-period is not the last sub-period in the current equalization execution period, determining the number of newly increased third idle state UEs in the next sub-period adjacent to the second sub-period;
and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
Optionally, the UE number determining module is further configured to:
and if the current equalization execution cycle is finished and the number of the newly-increased idle-state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell which needs to be reselected to the current time in the high-load cell based on the current time and the number of the newly-increased idle-state UE of the current high-load cell in the new equalization execution cycle.
Optionally, the cell reselection module is configured to:
setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information;
and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
Optionally, the system further includes a reselection monitoring module, configured to:
monitoring the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to a preset maximum reselection duration;
if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the current newly-added idle-state UE fails to reselect.
In a third aspect, an embodiment of the present invention further provides an electronic device, including:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, which when called by the processor are capable of performing the above-described methods.
In a fourth aspect, an embodiment of the present invention further provides a non-transitory readable storage medium storing a computer program, which causes the computer to execute the above method.
According to the technical scheme, the release message carrying the reselection priority information is sent to the newly-added idle state UEs, the number of which is greater than or equal to the number of the target UEs, so that each newly-added idle state UE reselects to the low-load cell based on the reselection priority information, and load balancing is achieved. Therefore, on one hand, the idle-state UE is switched to the low-load cell, so that the load balance can be realized, and meanwhile, the influence on the service transmission rate is avoided, namely, compared with the prior art, the network service quality and the user experience can be ensured while the load balance is realized. On the other hand, the reselection priority information is carried in the release message, and the idle-state UE can execute cell reselection without broadcasting the priority information to each newly added idle-state UE, so that the load balance is realized, and the resource consumption is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is also possible for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a load balancing method according to an embodiment of the present invention;
FIG. 2 is a timing diagram illustrating an execution of balanced execution cycles according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a load balancing apparatus according to an embodiment of the present invention;
fig. 4 is a logic block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 shows a schematic flowchart of a load balancing method provided in this embodiment, including:
s101, determining the number of target user terminals (UE) needing to be reselected to a low-load cell in a current high-load cell and the number of newly-increased idle-state UEs of the current high-load cell in a current balance execution period, and determining whether the number of the newly-increased idle-state UEs is greater than or equal to the number of the target UEs.
The current high-load cell refers to any cell in a high-load condition at the current moment.
The low-load cell refers to a cell for sharing the load of the current high-load cell, and it can be understood that the low-load cell may generally be a neighboring cell of the high-load cell in order to ensure the network service quality.
The target UE number refers to the UE number of the current high-load cell needing to be switched to the low-load cell.
The new idle-state UE number refers to the number of UEs released by the current high-load cell in the current balance execution period, and the idle-state UE refers to a UE whose duration of the no-data transmission state exceeds the timing duration of a UI Timer (UE Inactive Timer) to trigger a Radio Resource Control (RRC) release procedure.
The equalization execution period refers to a period duration for determining the number of the newly increased idle-state UEs, and if the equalization execution period is assumed to be 10 seconds, the number of the newly increased idle-state UEs in 10 seconds from the moment when the target UE number is determined can be determined as the number of the newly increased idle-state UEs.
In implementation, a release message carrying reselection priority information may be sent to each newly added idle-state UE, so that each newly added idle-state UE reselects to the low-load cell. Specifically, first, the resource usage (for example, the physical resource block occupancy, the UE number, and the like) of the neighboring cell of the current high-load cell may be obtained through the base station, and a low-load cell that can be used for sharing the load of the current high-load cell may be selected based on the resource usage of the current high-load cell and the neighboring cell. Then, the number of target UEs that need to be reselected to the low-load cell may be determined based on the resource usage of the current high-load cell and the resource usage of the low-load cell, and at the same time, the number of new idle-state UEs of the current high-load cell in the current equalization execution period may be determined, that is, the number of new idle-state UEs in the current equalization execution period from the time when the number of target UEs is determined. Then, the aforementioned new idle-state UE number and the target UE number may be compared to determine whether the new idle-state UE number is greater than or equal to the target UE number.
S102, if the number of the newly added idle state UEs is larger than or equal to the number of the target UEs, sending a release message carrying reselection priority information to each newly added idle state UE so that each newly added idle state UE reselects to a low-load cell based on the reselection priority information.
Wherein the reselection priority information is a dedicated priority information element for indicating that the low-load cell has a higher priority than the current high-load cell.
In implementation, if the number of the newly added idle-state UEs is greater than or equal to the number of the target UEs, a release message carrying reselection priority information may be sent to each newly added idle-state UE, so that each newly added idle-state UE may reselect to the low-load cell based on the reselection priority information. It is to be understood that the aforementioned reselection priority information may be in an idle state mobility control information (idlemobificitioncontrolinfo) cell set in the release message, where the aforementioned idlemobificitioncontrolinfo may include, in addition to the aforementioned reselection priority information, common priority information, such as other systems (including UTRA-FDD, UTRA-TDD, GERAN, and other systems) in dlemodemobificitioncontrolinfo, and for other systems, the original value of the common reselection priority of the low-bearer cell may be filled, and a system that does not exist in the parameter configuration of the low-bearer cell is not filled.
According to the technical scheme, the release message carrying the reselection priority information is sent to the newly-added idle state UEs, the number of which is greater than or equal to the number of the target UEs, so that each newly-added idle state UE reselects to the low-load cell based on the reselection priority information, and load balancing is achieved. Therefore, on one hand, the idle-state UE is switched to the low-load cell, so that the influence on the service transmission rate can be avoided while the load balance is realized, namely, compared with the prior art, the network service quality and the user experience can be ensured while the load balance is realized. On the other hand, the reselection priority information is carried in the release message, and the idle-state UE can execute cell reselection without broadcasting the priority information to each newly added idle-state UE, so that the load balance is realized, and the resource consumption is effectively reduced.
Further, on the basis of the above method embodiment, a condition for triggering the UE to enter the idle state may also be adjusted, and the corresponding processing may be as follows: and if the number of the newly-increased idle state UEs is less than the number of the target UEs, adjusting the condition for triggering the UEs to enter the idle state in the current balance execution period.
In implementation, if it is determined that the number of the newly added idle UEs is smaller than the number of the target UEs, the condition for triggering the UE to enter the idle state may be adjusted in the current balance execution period, for example, the condition for triggering the UE to enter the idle state may be adjusted by adjusting the timing duration of the UI Timer. Therefore, the number of the idle-state UE can be increased to enable the number of the newly added idle-state UE to approach the number of the target UE, so as to achieve the final purpose of load transfer balance more quickly and further improve the network service quality and the user experience.
Further, on the basis of the method embodiment, the equalization execution cycle may be divided into a plurality of sub-cycles, and it is determined whether the number of newly increased idle UEs is greater than or equal to the number of target UEs according to the number of newly increased idle UEs in each sub-cycle, and the corresponding partial processing in step S201 may be as follows: detecting the number of first idle state UE newly added in the first sub-period of the current equalization execution period, and determining whether the number of the first idle state UE newly added is greater than or equal to the number of target UE; if the number of the newly added first idle-state UE is smaller than the number of the target UE, detecting the number of the newly added second idle-state UE in the second sub-period, and determining the sum of the number of the first idle-state UE and the number of the second idle-state UE as the number of the second newly added idle-state UE; determining whether the number of the second newly-increased idle-state UEs is larger than or equal to the number of the target UEs, and if the number of the second newly-increased idle-state UEs is smaller than the number of the target UEs, determining whether the second sub-period is the last sub-period in the current balancing execution period; if the second sub-period is not the last sub-period in the current equalization execution period, determining the newly increased number of third idle state UEs in the next sub-period adjacent to the second sub-period; and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
The equalization execution period may include a plurality of sub-periods, and assuming that the equalization execution period is 10 seconds, the equalization execution period may be divided into 3 sub-periods, such as 5 seconds, 3 seconds, and 2 seconds, respectively.
The first idle state UE quantity refers to the newly increased idle state UE quantity in the first sub-period in the current balance execution period.
The second sub-period refers to a second sub-period within the current equalization execution period.
The second idle state UE quantity refers to the newly increased idle state UE quantity in the second sub-period in the current balance execution period.
The second newly-added idle-state UE quantity refers to a sum of the first idle-state UE quantity and the second idle-state UE quantity, that is, a sum of the newly-added idle-state UE quantities in the first sub-period and the second sub-period in the current equalization execution period.
In implementation, each equalization execution period may be divided into a plurality of sub-periods, and whether the number of newly added idle UEs is greater than or equal to the number of target UEs is determined according to the number of newly added idle UEs in each sub-period. Specifically, the number of newly added idle-state UEs in the first sub-period of the current balancing execution period in the current high-load cell, that is, the number of first idle-state UEs, may be detected first, and it may be determined whether the number of the newly added first idle-state UEs is greater than or equal to the number of target UEs. If the number of the newly added first idle-state UEs is greater than or equal to the number of the target UEs, a release message carrying reselection priority information may be sent to each newly added idle-state UE, so that each newly added idle-state UE reselects to the low-load cell based on the reselection priority information. If the number of the newly added first idle-state UEs is less than the number of the target UEs, the number of the second newly added idle-state UEs in the second sub-period of the current equalization execution period may be detected, and the sum of the number of the first idle-state UEs and the number of the second idle-state UEs may be determined as the number of the second newly added idle-state UEs. Then, it may be determined whether the second new increased number of idle-state UEs is greater than or equal to the target number of UEs. If the number of the second newly-added idle-state UEs is greater than or equal to the number of the target UEs, a release message carrying reselection priority information may be sent to each newly-added idle-state UE, so that each newly-added idle-state UE reselects to the low-load cell based on the reselection priority information. If the second new idle-state UE number is smaller than the target UE number, it may be determined whether the second sub-period is the last sub-period in the current equalization execution period. If the second sub-period is not the last sub-period in the current equalization execution period, the newly increased number of the third idle UEs in the next sub-period adjacent to the second sub-period may be determined. Then, the sum of the first idle-state UE quantity, the second idle-state UE quantity, and the third idle-state UE quantity may be determined as a third newly increased idle-state UE quantity, and it is determined whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity. It can be understood that, according to the foregoing steps, it may be sequentially determined whether the number of idle UEs newly added from the first sub-cycle in the current equalization execution cycle to the end of any sub-cycle in the current equalization execution cycle is greater than or equal to the number of target UEs, and when the number of the newly added idle UEs is greater than or equal to the number of target UEs, a release message carrying reselection priority information is sent to each newly added idle UE, so that each newly added idle UE reselects to a low-load cell based on the reselection priority information. In this way, when any sub-period of the balancing execution period ends, the newly added idle-state UEs are greater than or equal to the target UE number, cell reselection may be executed (that is, each newly added idle-state UE reselects the low-load cell based on the reselection priority information), so that the processing rate of load balancing may be further improved, and the network service quality may be further improved.
Referring to fig. 2 (in fig. 2, the RRC Release for UE Inactive With IMMCI refers to a UE that uses the IMMCI to trigger an RRC Release procedure), taking a current equalization execution cycle as an example, when a cell determines that a high load condition is established (judgas HighLoad, i.e., point a in fig. 2), start load information interaction is performed, and after the interaction is successful, a target cell selection is performed, i.e., a low load cell (judgas neigboro cell, i.e., time B0 in fig. 2) is determined, and after the low load cell is selected, an equalization execution cycle (neigborocell Judge Period, i.e., time B0 to time C0 in fig. 2) is immediately started. And estimating the number of UEs (namely, the target UE number) to be balanced in the period based on the load conditions of the current high-load cell and the current low-load cell, counting the number of UEs (namely, the newly added idle-state UE number) to be balanced in the period during the balancing execution period, and stopping the balancing execution period if the balancing UE number requirement is met (namely, the newly added idle-state UE number is greater than or equal to the target UE number).
Specifically, assume that the current equalization execution cycle is divided into 3 sub-cycles, a first sub-cycle (initial U1Timer Period, i.e. from time B0 to time B1 in fig. 2) executes cell reselection after waiting for satisfying the requirement of the number of equalization UEs according to the UI Timer (e.g. 10 seconds) initially set by the cell, but if the requirement of the number of equalization UEs is not satisfied after the first sub-cycle is completed (i.e. the newly increased number of UEs in the first idle state is smaller than the target number of UEs), then a next sub-cycle is started (i.e. second sub-cycle short U1Timer Period, i.e. from time B1 to time B2 in fig. 2), at this time, the UI Timer duration is adaptively shortened (e.g. 5 seconds), cell reselection is executed after waiting for satisfying the requirement of the number of equalization UEs, and if the number of UEs is not equalized enough after the second sub-cycle is completed, then a next sub-cycle is started (short U1Timer duration, i.e. from time B2 to time C0 in fig. 2), at this time, the UI Timer is adaptively shortened to the minimum duration (e.g., 3 seconds), and cell reselection is performed after the requirement of balancing the number of UEs is met.
Further, on the basis of the above method embodiment, if the current equalization execution cycle is ended and the number of newly-increased idle UEs is still less than the target number of UEs, the processes of the above steps S101 to S102 may be executed again, and the corresponding processing may be as follows: and if the execution of the current balance execution period is finished and the number of the newly added idle state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell needing to be reselected to the current time in the high-load cell based on the current time and the number of the newly added idle state UE of the high-load cell at the current time in the new balance execution period.
In implementation, if the current equalization execution cycle is completed and the number of the newly added idle UEs is still less than the number of the target UEs, the number of the target user terminals UE of the low-load cell that needs to be reselected to the current time in the high-load cell at the current time and the number of the newly added idle UEs of the high-load cell at the current time in the new equalization execution cycle may be determined again, and it is determined whether the number of the newly added idle UEs in the new equalization execution cycle is greater than or equal to the number of the target UEs at the current time; and sending a release message carrying reselection priority information to each newly-added idle-state UE when the number of the newly-added idle-state UEs in the new balance execution period is larger than or equal to the number of the target UEs at the current moment, so that each newly-added idle-state UE reselects to the low-load cell based on the reselection priority information. That is, if the current balancing execution cycle is completed and the number of the newly added idle UEs is still less than the number of the target UEs, the load balancing process described in the above steps S101 to S102 may be executed again. Therefore, the load balancing process is re-executed based on the latest load condition, so that the determined number of the target UEs can better meet the actual requirement, and the load balancing efficiency can be further improved.
Referring to fig. 2, when a balance execution Period expires, the target low-load cell (judgas Lowload) may be determined again based on the load conditions of the high-load cell and the low-load cell (judgas NeighborCell again) at the current time, and a new balance execution Period (NeighborCell Judge Period, i.e., from time C0 to time D0 in fig. 2) may be executed again. Similarly, the execution cycle is divided into several (for example, 3) sub-cycles (internal U1Timer Period, i.e., from C0 to C1, short U1Timer Period, i.e., from C1 to C2, and short U1Timer Period, i.e., from C3 to D0 in fig. 2), which respectively form different UI Timer durations, and determine whether to stop the balancing execution cycle based on counting the number of balanced UEs (i.e., the number of newly added idle UEs) in the cycle, and execute cell reselection.
Further, on the basis of the above method embodiment, reselection priority information may be generated by setting priorities of a current high-load cell and a current low-load cell, and a corresponding part of the processing of step S102 may be as follows: setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information; and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
In implementation, when the number of the newly added idle UEs is greater than or equal to the number of the target UEs, the priority of the frequency point corresponding to the low-load cell may be adjusted to be higher than the frequency point corresponding to the priority of the current high-load cell, so as to generate reselection priority information. Then, a release message may be generated based on the reselection priority information, that is, the release message carries the reselection priority information, for example, the reselection priority information may be added to an idle mobility control information cell of the release message. And then, the release message carrying the reselection priority information may be sent to each newly added idle-state UE, so that each newly added idle-state UE may perform cell reselection based on the reselection priority information in the release message, that is, reselect a low-load cell. Therefore, the idle-state UE executes cell reselection in a mode of carrying reselection priority information in the release message, so that the load balance can be further realized, and the resource consumption can be reduced.
Further, on the basis of the foregoing method embodiment, the reselection duration of each newly added idle-state UE may be monitored to determine whether each newly added idle-state UE is successfully reselected, and the corresponding processing may be as follows: monitoring the interval duration of the reselection time of the current newly-added idle-state UE for completing cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to the preset maximum reselection duration; if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the reselection of the currently newly added idle-state UE fails.
The currently newly added idle-state UE refers to any idle-state UE that needs to perform cell reselection (that is, cell reselection from a short-term high-load cell refers to a low-load cell).
The preset maximum reselection time refers to the preset maximum time consumed by the newly-added idle-state UE for cell reselection.
In implementation, after sending the release message carrying the reselection priority information to the current newly-added idle-state UE, the reselection time when the current newly-added idle-state UE completes cell reselection (for example, the reselection time may be monitored by a T320 clock), and the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message is calculated. The aforementioned interval duration may then be compared to a preset maximum reselection duration to determine whether the interval duration is less than or equal to the preset maximum reselection duration. If the interval duration is less than or equal to the preset maximum reselection duration, it can be determined that the current newly-increased idle-state UE is successfully reselected, and otherwise, it is determined that the current newly-increased idle-state UE is unsuccessfully reselected. Therefore, the reselection time of the newly added idle UE is monitored, the reselection condition can be known in real time, and the reselection time can be used as a data basis for setting the maximum reselection time in subsequent adjustment.
Fig. 3 shows a load balancing apparatus provided in this embodiment, which includes a UE number determining module 301 and a cell reselection module 302, where:
the UE number determining module 301 is configured to determine the number of target User Equipments (UEs) in a current high-load cell that need to be reselected to a low-load cell, and the number of new idle-state UEs in the current balancing execution period of the current high-load cell, and determine whether the number of the new idle-state UEs is greater than or equal to the number of the target UEs;
the cell reselection module 302 is configured to send a release message carrying reselection priority information to each newly added idle-state UE if the number of the newly added idle-state UEs is greater than or equal to the number of the target UEs, so that each newly added idle-state UE reselects the low-load cell based on the reselection priority information.
Further, the system also comprises an adjusting module, which is used for:
and if the number of the newly added idle state UEs is less than the number of the target UEs, adjusting the condition for triggering the UEs to enter the idle state in the current balance execution period.
Further, the number of the newly added idle UEs refers to the number of UEs released by the current high-load cell in the current balancing execution period;
the reselection priority information is a dedicated priority information element for indicating that the low-load cell has a higher priority than the current high-load cell.
Further, the equalization execution cycle includes a plurality of sub-cycles;
the UE number determining module 301 is configured to:
detecting the number of first idle state UE which is newly added in the first sub-period of the current balance execution period, and determining whether the number of the first idle state UE which is newly added is greater than or equal to the number of the target UE;
if the number of the newly added first idle-state UE is smaller than the target UE number, detecting the number of the newly added second idle-state UE in a second sub-period, and determining the sum of the number of the first idle-state UE and the number of the second idle-state UE as the second newly added idle-state UE number;
determining whether the second newly increased idle-state UE quantity is greater than or equal to the target UE quantity, and if the second newly increased idle-state UE quantity is less than the target UE quantity, determining whether the second sub-cycle is the last sub-cycle in the current equalization execution cycle;
if the second sub-period is not the last sub-period in the current equalization execution period, determining the number of newly increased third idle state UEs in the next sub-period adjacent to the second sub-period;
and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
Further, the UE number determining module 301 is further configured to:
and if the execution of the current equalization execution cycle is finished and the number of the newly-increased idle-state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell which needs to be reselected to the current time in the high-load cell based on the current time and the number of the newly-increased idle-state UE of the high-load cell at the current time in the new equalization execution cycle.
Further, the cell reselection module 302 is configured to:
setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information;
and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
Further, the system also comprises a reselection monitoring module, configured to:
monitoring the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to a preset maximum reselection duration;
if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the current newly-added idle-state UE fails to reselect.
The load balancing apparatus described in this embodiment may be used to implement the above method embodiments, and the principle and technical effect are similar, which are not described herein again.
Referring to fig. 4, the electronic device includes: a processor (processor)401, a memory (memory)402, and a bus 403;
wherein,
the processor 401 and the memory 402 complete communication with each other through the bus 403;
the processor 401 is configured to call program instructions in the memory 402 to perform the methods provided by the above-described method embodiments.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-described method embodiments.
The present embodiment provides a non-transitory readable storage medium storing computer instructions that cause the computer to perform the methods provided by the method embodiments described above.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (16)

1. A method for load balancing, comprising:
determining the number of target user terminals (UE) needing to be reselected to a low-load cell in a current high-load cell and the number of newly-increased idle-state UEs of the current high-load cell in a current balance execution period, and determining whether the number of the newly-increased idle-state UEs is greater than or equal to the number of the target UEs; the idle UE refers to UE which triggers a radio resource control release process when the duration of a data transmission-free state exceeds the timing duration of an inactive timer of the UE;
if the number of the newly added idle-state UEs is larger than or equal to the number of the target UEs, sending a release message carrying reselection priority information to each newly added idle-state UE so that each newly added idle-state UE reselects the low-load cell based on the reselection priority information; the reselection priority information is a dedicated priority information element for indicating that the low-load cell has a higher priority than the current high-load cell.
2. The method according to claim 1, wherein after determining whether the number of newly added idle UEs is greater than or equal to the target number of UEs, the method further comprises:
and if the number of the newly-added idle state UE is less than the number of the target UE, adjusting the condition for triggering the UE to enter the idle state in the current balance execution period.
3. The load balancing method according to claim 1, wherein the number of newly added idle UEs refers to the number of UEs released by the current highly loaded cell in a current balancing execution period;
the reselection priority information is a dedicated priority information element for indicating that the low-loaded cell has a higher priority than the current high-loaded cell.
4. The load balancing method according to claim 1, wherein the balancing execution cycle comprises a plurality of sub-cycles;
the determining that the number of the newly increased idle-state UEs in the current equalization execution period of the current high-load cell and determining whether the number of the newly increased idle-state UEs is greater than or equal to the number of the target UEs includes:
detecting the number of first idle state UE newly added in the first sub-period of the current equalization execution period, and determining whether the number of the first idle state UE newly added is greater than or equal to the number of the target UE;
if the number of the newly added first idle-state UE is smaller than the target UE number, detecting the number of the newly added second idle-state UE in a second sub-period, and determining the sum of the number of the first idle-state UE and the number of the second idle-state UE as the second newly added idle-state UE number;
determining whether the second newly increased idle-state UE quantity is greater than or equal to the target UE quantity, and if the second newly increased idle-state UE quantity is less than the target UE quantity, determining whether the second sub-cycle is the last sub-cycle in the current equalization execution cycle;
if the second sub-period is not the last sub-period in the current equalization execution period, determining the newly increased number of third idle state UEs in the next sub-period adjacent to the second sub-period;
and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
5. The method according to claim 1, wherein after determining whether the number of newly added idle UEs is greater than or equal to the target number of UEs, the method further comprises:
and if the current equalization execution period is finished and the number of the newly-increased idle-state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell needing to be reselected to the current time in the high-load cell based on the current time and the number of the newly-increased idle-state UE of the high-load cell at the current time in the new equalization execution period.
6. The load balancing method according to claim 1, wherein the sending a release message carrying reselection priority information to each newly added idle UE comprises:
setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information;
and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
7. The load balancing method according to claim 1, further comprising:
monitoring the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to the preset maximum reselection duration;
if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the current newly-added idle-state UE fails to reselect.
8. A load balancing device comprises a UE number determining module and a cell reselection module, wherein:
the UE quantity determining module is used for determining the quantity of target user terminals (UE) needing to be reselected to a low-load cell in a current high-load cell and the quantity of newly-increased idle-state UE of the current high-load cell in a current balance execution period, and determining whether the quantity of the newly-increased idle-state UE is greater than or equal to the quantity of the target UE; the idle state UE refers to UE which triggers a radio resource control release process when the duration of a data transmission-free state exceeds the timing duration of a UE inactivity timer;
the cell reselection module is configured to send a release message carrying reselection priority information to each newly added idle UE if the number of the newly added idle UEs is greater than or equal to the number of the target UEs, so that each newly added idle UE reselects the low-load cell based on the reselection priority information; the reselection priority information is a dedicated priority information element for indicating that the low-load cell has a higher priority than the current high-load cell.
9. The load balancing device of claim 8, further comprising an adjustment module configured to:
and if the number of the newly-added idle state UE is less than the number of the target UE, adjusting the condition for triggering the UE to enter the idle state in the current balance execution period.
10. The load balancing apparatus according to claim 8, wherein the number of newly added idle UEs refers to a number of UEs released by the current overloaded cell in a current balancing execution cycle;
the reselection priority information is a dedicated priority information element for indicating that the low-loaded cell has a higher priority than the current high-loaded cell.
11. The load balancing apparatus according to claim 8, wherein the balancing execution cycle includes a plurality of sub-cycles;
the UE number determining module is configured to:
detecting the number of first idle state UE which is newly added in the first sub-period of the current balance execution period, and determining whether the number of the first idle state UE which is newly added is greater than or equal to the number of the target UE;
if the number of the newly added first idle-state UEs is smaller than the number of the target UEs, detecting the number of the newly added second idle-state UEs in a second sub-period, and determining the sum of the number of the first idle-state UEs and the number of the second idle-state UEs as the number of the second newly added idle-state UEs;
determining whether the second newly increased idle-state UE number is greater than or equal to the target UE number, and if the second newly increased idle-state UE number is less than the target UE number, determining whether the second sub-cycle is the last sub-cycle in the current equalization execution cycle;
if the second sub-period is not the last sub-period in the current equalization execution period, determining the newly increased number of third idle state UEs in the next sub-period adjacent to the second sub-period;
and determining the sum of the first idle-state UE quantity, the second idle-state UE quantity and the third idle-state UE quantity as a third newly increased idle-state UE quantity, and determining whether the third newly increased idle-state UE quantity is greater than or equal to the target UE quantity.
12. The load balancing apparatus of claim 8, wherein the UE number determining module is further configured to:
and if the current equalization execution cycle is finished and the number of the newly-increased idle-state UE is less than the number of the target UE, re-determining the number of the target user terminals UE of the low-load cell which needs to be reselected to the current time in the high-load cell based on the current time and the number of the newly-increased idle-state UE of the high-load cell at the current time in the new equalization execution cycle.
13. The load balancing apparatus of claim 8, wherein the cell reselection module is configured to:
setting the priority of the frequency point corresponding to the low-load cell to be higher than the frequency point corresponding to the current high-load cell, and generating reselection priority information;
and generating a release message based on the reselection priority information, and sending the release message to each newly-added idle-state UE.
14. The load balancing device of claim 8, further comprising a reselection monitoring module configured to:
monitoring the interval duration between the reselection time when the current newly-added idle-state UE completes cell reselection and the sending time of the release message, and determining whether the interval duration is less than or equal to the preset maximum reselection duration;
if the interval duration is less than or equal to the preset maximum reselection duration, determining that the current newly-added idle-state UE is successfully reselected; otherwise, determining that the reselection of the currently newly added idle-state UE fails.
15. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the load balancing method of any one of claims 1 to 7 when executing the program.
16. A non-transitory readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the load balancing method of any one of claims 1 to 7.
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