CN114079973B

CN114079973B - Load balancing method and device, electronic equipment and storage medium

Info

Publication number: CN114079973B
Application number: CN202010826542.XA
Authority: CN
Inventors: 杨鑫
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2024-03-08
Anticipated expiration: 2040-08-17
Also published as: CN114079973A

Abstract

The invention provides a load balancing method, a load balancing device, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: acquiring a first cell type of a first cell meeting a load balancing condition and user information of a connected user in the first cell; determining a second cell meeting preset conditions; acquiring a second cell type of the second cell and load information of the second cell; determining candidate users in the first cell according to the first cell type, the second cell type and the user information, and determining the balance level of the candidate users in the first cell; calculating the number of balanced users of the first cell according to the load information; and switching the candidate users in the first cell to the second cell according to the balance grade and the balance user number. The invention can determine the balance strategy according to the cell type and the user capacity, and improves the accuracy of 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, a device, an electronic apparatus, and a storage medium.

Background

The resources of the cell in the communication system are limited, the load of the cell gradually increases along with the increase of the number of users and the number of services, the increase of the load of the cell can influence the index performance of the user service, if the load of the cell can not be effectively reduced timely, when the load of the communication system exceeds a certain threshold, the performance of the communication system can be rapidly reduced and even the communication system is crashed; meanwhile, as the load is unevenly distributed, for a high-load cell, the resources owned by the high-load cell are relatively deficient, and the service quality is difficult to ensure; for the low-load cell, the resource utilization rate is low, so that the resource waste is caused. Therefore, it is required to distribute the users served between the same coverage cells of different base stations as uniformly as possible through load balancing, and reduce the occurrence of high-load cells, thereby effectively improving the overall performance of the communication system.

In a communication system in which a Long-Term Evolution (LTE) network and a Non-independent Networking (NSA) network are alternately deployed, load balancing is mainly implemented through three parts, namely load assessment, load information interaction and balancing strategies, wherein the existing implementation process is as follows for the balancing strategies:

1. Determining a target neighbor cell in the neighbor cells based on a cell-level physical resource block (PRB, physical Resource Block) occupancy or based on a number of users;

2. determining a user priority based on a user-level PRB occupancy and a quality of service Class identifier (QCI), wherein the lower the QCI value is, the higher the user priority is, the higher the user-level PRB occupancy is, and the higher the user priority is;

3. calculating the load quantity which can be balanced to the adjacent cells, and determining the number of users needing to be balanced according to the load quantity;

4. acquiring a measurement report of a user according to the priority of the user, if the neighbor cell of the user in the measurement report is a target neighbor cell, switching the user to the target neighbor cell, otherwise, not performing switching treatment on the user;

5. and (3) continuing to execute the switching judgment in the step (4) on the next user according to the user priority order until the number of switched users is equal to the number of users needing balancing.

As can be seen from the above, in the communication system where LTE and NSA are cross-deployed, the existing load balancing policy does not distinguish between the neighbor cell type and the user type, but in the communication system where LTE and NSA are cross-deployed, only LTE base stations exist in the LTE network and only the 4th generation mobile network (4G,4th Generation mobile networks) users are supported, the NSA network includes LTE base stations and New air interface (NR, new Radio) base stations, where LTE base stations in the NSA network are also called anchor stations, NSA cells support users with dual connectivity, and users with dual connectivity can connect anchor stations and NR base stations at the same time, and can communicate with the 4G and 5th generation mobile networks (5G,5th Generation mobile networks) at the same time.

Disclosure of Invention

The invention provides a load balancing method, a load balancing device, electronic equipment and a storage medium, which are used for solving the problem of poor load balancing accuracy in the prior art.

According to a first aspect of the present invention, there is provided a load balancing method, the method comprising:

acquiring a first cell type of a first cell meeting a load balancing condition and user information of a connected user in the first cell;

determining a second cell meeting preset conditions;

acquiring a second cell type of the second cell and load information of the second cell;

determining candidate users in the first cell according to the first cell type, the second cell type and the user information, and determining the balance level of the candidate users in the first cell;

calculating the number of balanced users of the first cell according to the load information;

and switching the candidate users in the first cell to the second cell according to the balance grade and the balance user number.

According to a second aspect of the present invention, there is provided a load balancing apparatus, the apparatus comprising:

the first acquisition module is used for acquiring a first cell type of a first cell meeting the load balancing condition and user information of a connected user in the first cell;

The first determining module is used for determining a second cell meeting preset conditions;

the second acquisition module is used for acquiring a second cell type of the second cell and load information of the second cell;

a second determining module, configured to determine a candidate user in the first cell according to the first cell type, the second cell type and the user information, and determine an equalization level of the candidate user in the first cell;

the user number calculation module is used for calculating the balanced user number of the first cell according to the load information;

and the switching control module is used for switching the candidate users in the first cell to the second cell according to the balance grade and the balance user number.

According to a third aspect of the present invention, there is provided an electronic device comprising:

a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the aforementioned method when executing the program.

According to a fourth aspect of the invention, there is provided a readable storage medium, which when executed by a processor of an electronic device, enables the electronic device to perform the aforementioned method.

The invention provides a load balancing method, a load balancing device, electronic equipment and a storage medium, wherein the load balancing method comprises the following steps: acquiring a first cell type of a first cell meeting a load balancing condition and user information of a connected user in the first cell; determining a second cell meeting preset conditions; acquiring a second cell type of the second cell and load information of the second cell; determining candidate users in the first cell according to the first cell type, the second cell type and the user information, and determining the balance level of the candidate users in the first cell; calculating the number of balanced users of the first cell according to the load information; and switching the candidate users in the first cell to the second cell according to the balance grade and the balance user number. The invention can determine the balance strategy according to the cell type and the user capacity, and improves the accuracy of load balance.

The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of specific steps of a load balancing method according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of cell division of an LTE and NSA cross-networking according to a first embodiment of the present invention;

fig. 3 is a flowchart of specific steps of a load balancing method according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of resource information interaction between base stations according to a second embodiment of the present invention;

fig. 5 is a block diagram of a load balancing apparatus according to a third embodiment of the present invention;

fig. 6 is a block diagram of a load balancing apparatus according to a fourth embodiment of the present invention;

fig. 7 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1, a flowchart illustrating specific steps of a load balancing method according to a first embodiment of the present invention is shown.

Step 101, obtaining a first cell type of a first cell meeting load balancing conditions and user information of a connection state user in the first cell.

The load balancing method provided by the embodiment of the invention is applied to a communication system of LTE and NSA cross deployment, and when a high-load cell exists in a cell covered by LTE and NSA cross networking, the cell is subjected to load balancing so as to relieve the communication pressure of the cell and ensure the communication quality. Therefore, in the embodiment of the invention, when the first cell is in a high-load state, it is determined that the first cell meets a load balancing condition. Specifically, if the load capacity of the first cell is greater than a preset load balancing threshold, determining that the first cell meets a load balancing condition. There are many parameters for evaluating the load of the first cell, for example, a hardware occupancy rate, a radio resource occupancy rate, a connection state user number, etc., and the embodiment of the present invention is not limited in detail.

The connection state users are users in communication in the first cell, and the user information of the connection state users generally includes the number of connection state users, the occupancy rate of user PRBs, QCI and the like.

Referring to fig. 2, a schematic diagram of cell division of LTE and NSA cross-networking is shown in an embodiment of the present invention, where a cell covered by an LTE network is an LTE cell, and a cell covered by an NSA network includes an NSA cell and an NR cell. A user in the LTE network is accessed from a 4G base station, signaling is transmitted through the 4G network, and communication service is borne by the 4G network; the NSA network comprises LTE on the 4G side and NR on the 5G side, and the user can connect the 4G base station and the 5G base station simultaneously, signaling is mainly transmitted through the 4G network, communication traffic is commonly born by the 4G network and the 5G network, and in the NSA network, a user with dual connectivity connects the NSA cell and the NR cell simultaneously. Thus, in an embodiment of the present invention, the first cell type comprises an LTE cell, an NSA cell and an NR cell.

Step 102, determining a second cell meeting the preset condition.

In the embodiment of the invention, the second cell is a target cell for load balancing of the first cell, and when the first cell meets the load balancing condition, the user needing balancing in the first cell is switched to the second cell. The second cell is a same-coverage neighboring cell of the first cell, the load of the second cell is smaller than that of the first cell, and the difference value between the load of the first cell and the load of the second cell is larger than a preset value, so that the second cell is in a high-load state after the user of the first cell is switched to the second cell, and the second cell is triggered to perform load balancing, so that the user is switched back and forth between the first cell and the second cell. Therefore, in the embodiment of the present invention, if a first cell has at least one neighboring cell that is covered with the first cell, a first load amount of the first cell and a second load amount of the neighboring cell are obtained; and if the difference value between the first load quantity and the second load quantity is larger than a preset value, determining the adjacent cell as a second cell meeting preset conditions.

Step 103, obtaining a second cell type of the second cell and load information of the second cell.

The second cell type includes an LTE cell, an NSA cell, and an NR cell, and load information of the second cell may include a load amount of the second cell, which is used to reflect a load state of the second cell, where the load amount may be estimated by a hardware occupancy rate, a radio resource occupancy rate, a connection state user number, and so on, and the embodiment of the present invention is not specifically limited.

In the embodiment of the invention, if the first cell and the second cell belong to the same coverage in the station, the second cell type of the second cell and the load information of the second cell are directly obtained through communication in the base station; if the first cell and the second cell are covered by the data station, the first cell corresponds to the first base station, the second cell corresponds to the second base station, the first base station sends a resource request message to the second base station through an X2 interface, the second base station carries out load measurement on the second cell after receiving the resource request message, acquires the second cell type of the second cell and the load information of the second cell, and feeds back the acquired second cell type and the load information of the second cell to the first base station through the X2 interface.

Step 104, determining candidate users in the first cell according to the first cell type, the second cell type and the user information, and determining the balance level of the candidate users in the first cell.

The candidate users are the cells participating in load balancing in the first cell, namely the users which can be switched to the second cell in the first cell; the equalization level is used to indicate the switching order of candidate users, and the higher the equalization level, the earlier the switching is.

As can be seen from the foregoing step 101, in the embodiment of the present invention, if the cell types are different, the users supported by the cells are also different, and in order to match the users with suitable resident cells, the embodiment of the present invention determines the equalization level of the candidate users and the candidate users according to the first cell type, the second cell type, and the user information of the connected users in the first cell.

Optionally, the user information includes a quality of service class identifier QCI, and the step of determining candidate users in the first cell includes: and if the QCI of the connected user does not meet the preset level, taking the connected user as a candidate user.

The QCI level reflects the requirement of the communication service on the service quality, the higher the QCI level is, the higher the service quality required by the corresponding communication service is, and generally, when the load is balanced, the user with the lower QCI level corresponding to the current communication service is not switched, therefore, in the embodiment of the present invention, a lower QCI level is taken as a preset level, when the QCI of the connected user does not meet the preset level, the connected user is taken as a candidate user, for example, qci=1 is taken as a condition meeting the preset level, when the QCI level of the connected user is not 1, the connected user is taken as a candidate user, and when the QCI level of the connected user is equal to 1, the user is not switched when the load is balanced on the first cell; or, the QCI is less than or equal to 1 and is used as a condition meeting the preset level, when the QCI level of the connected user is greater than 1, the connected user is used as a candidate user, and when the QCI level of the connected user is less than or equal to 1, the user is not switched when the load balancing is carried out on the first cell.

Optionally, the user information includes a dual connectivity identifier, and the step of determining candidate users in the first cell includes: under the condition that the first cell type is a non-independent networking NSA cell, a connection state user with double connection capacity marked as a first preset mark in the first cell is used as a candidate user; or, in the case that the first cell type is a non-NSA cell and the second cell type is a NSA cell, the connected users in the first cell are used as candidate users.

In the embodiment of the present invention, the dual connectivity identifier is a first preset identifier, which indicates that the connected user does not have dual connectivity, and the dual connectivity identifier may be specifically set according to practical applications, specifically, one preset parameter may be selected as the dual connectivity identifier, where the preset parameter includes at least a preset identifier, one of the preset identifiers is used as the first preset identifier, and if the preset identifier of the preset parameter is the first preset identifier, it indicates that the connected user corresponding to the dual connectivity identifier does not have dual connectivity, for example, the dual connectivity identifier is set as "DC", where two preset identifiers exist in DC: YES and NO, taking NO as a first preset identifier, if the value of DC is NO, indicating that the connected user corresponding to the dual-connectivity identifier does not have dual-connectivity; or, a color label is adopted as the dual-connection capability identifier, and one color is selected as the first preset identifier, for example, yellow is set as the first preset identifier, and when the color of the dual-connection capability identifier is yellow, the fact that the connection state user corresponding to the dual-connection capability identifier does not have dual-connection capability is indicated.

As can be seen from the foregoing step 101, in the present invention, the user with dual connectivity can connect NSA cell and NR cell simultaneously, when the first cell type is NSA cell, the user with dual connectivity is also connected to the 5G base station while connecting to the 4G base station, and can communicate through the 5G network, if the user with dual connectivity is switched when the first cell is subjected to load balancing, it is possible to switch the user to LTE cell, so that the user can only communicate through the 4G network, and in the case of the first cell, if the user with dual connectivity is switched when the user number is fixed, the proportion of the remaining users in the first cell, which do not have dual connectivity, increases, and these users without dual connectivity cannot use the 5G network, which causes waste of 5G resources.

Similarly, in the case where the first cell type is a non-NSA cell and the second cell type is an NSA cell, it is known in connection with the foregoing step 101 that the NSA cell supports both the 4G network and the 5G network, so that, whether the user handed over from the first cell to the second cell has dual connectivity or not, the resource utilization rate of the second cell can be improved while the load of the first cell is reduced.

Alternatively, after determining a candidate user, a current service type of the candidate user may be obtained, and then an equalization level of the candidate user in the first cell may be determined according to the current service type. For example, if the current service type of the candidate user is voice call, the equalization level of the candidate user is set to be the first level, and the candidate user is preferentially switched to the second cell.

And 105, calculating the number of equalizing users of the first cell according to the load information.

The load information includes the current load of the second cell, which can be specifically evaluated by hardware occupancy rate, software occupancy rate, and connection state user number, which is not specifically limited in the embodiment of the present invention.

The load balancing of the first cell is to relatively balance the load amount of the balanced first cell and the load amount of the second cell, that is, the load amount of the balanced first cell and the load amount of the second cell are as same as possible, so that when the load balancing of the first cell is performed, the balancing user number of the first cell is calculated according to the load amount of the first cell and the load amount of the second cell, and then the connected state user in the first cell is switched to the second cell according to the calculated balancing user number, so that the load amount of the balanced first cell and the load amount of the second cell are as same as possible.

And 106, switching the candidate users in the first cell to the second cell according to the balance level and the balance user number.

Through the steps, the number of the balance users in the first cell and the balance grades of the candidate users are calculated, the candidate users are sequentially switched to the second cell according to the balance grades, and the higher the balance grade is, the earlier the candidate users are switched until the number of the candidate users switched to the second cell meets the balance user number.

In summary, the invention determines the candidate users in the first cell and the balance grade of the candidate users according to the first cell type, the second cell type and the user information, calculates the balance user number according to the load information of the second cell, and switches the candidate users to the second cell according to the balance grade and the balance user number, thereby being capable of matching the users with proper resident cells and improving the accuracy of load balance.

Example two

Referring to fig. 3, a specific step flowchart of a load balancing method according to a second embodiment of the present invention is shown.

Step 201, obtaining a first cell type of a first cell meeting a load balancing condition and user information of a connection state user in the first cell.

This step may refer to step 101, and will not be described herein.

Optionally, the meeting the load balancing condition includes: the PRB occupancy rate of the first cell is larger than a preset PRB threshold value, or the connection state user number of the first cell is larger than a preset user number threshold value.

Only when the first cell is in a high load state, load balancing is needed for the first cell, so in the embodiment of the invention, the load balancing condition is set, and when the first cell meets the load balancing condition, the load balancing is carried out for the first cell, which indicates that the first cell is in the high load state. Specifically, whether the load of the first cell exceeds the preset threshold can be judged by setting the preset threshold. If the PRB occupancy rate is adopted to evaluate the load quantity of the first cell, when the PRB occupancy rate of the first cell is larger than a preset PRB threshold value, the first cell meets a preset balance condition; if the load quantity of the first cell is estimated by adopting the connection state user quantity, when the connection state user quantity of the first cell is larger than a preset user quantity threshold value, the first cell meets a preset balance condition.

Step 202, if at least one neighboring cell which is covered by the first cell exists in the first cell, acquiring a first load quantity of the first cell and a second load quantity of the neighboring cell.

In the embodiment of the invention, the neighbor cell which is covered with the first cell comprises the neighbor cell which is covered with the first cell in the same way as the first cell in the station and the neighbor cell which is covered with the first cell in the same way as the first cell between the stations. The load amount can be estimated by hardware occupancy rate, software occupancy rate and connection state user number, and the embodiment of the invention is not particularly limited.

Step 203, determining a second cell meeting a preset condition according to the difference value between the first load and the second load.

In the embodiment of the invention, the second cell is a target neighbor cell of the first cell, and after the equalization strategy is determined, the connected state user in the first cell is switched to the second cell according to the equalization strategy.

Optionally, if the first load is a first PRB occupancy of the first cell, the second load is a second PRB occupancy of the neighboring cell, and the step of determining, according to a difference between the first load and the second load, a second cell that meets a preset condition includes: and if the difference value between the first PRB occupancy rate and the second PRB occupancy rate is larger than a preset PRB difference threshold, determining the neighbor cell as a second cell meeting preset conditions.

In the embodiment of the invention, the first PRB occupancy and the second PRB occupancy are cell-level PRB occupancy, which represent the PRB occupancy with the lowest requirement of corresponding cell service quality (QoS, quality of Service), and can be represented by cell equivalent PRB occupancy, specifically, the minimum value is taken from the total number of PRBs supported by cell bandwidth and the total number of software capacity permission PRBs, the ratio of the cell equivalent PRB occupancy to the minimum value is taken as the cell equivalent PRB occupancy, and the uplink and the downlink are required to be distinguished when the PRB equivalent occupancy is calculated.

The preset PRB difference threshold may be specifically set according to a cell configuration parameter.

Optionally, if the first load amount is a first connection state user number of the first cell, the second load amount is a second connection state user number of the neighboring cell, and the step of determining the second cell meeting the preset condition according to the difference value between the first load amount and the second load amount includes: and if the difference value between the first connection state user number and the second connection state user number is larger than a preset threshold value and the ratio of the difference value between the first connection state user number and the second connection state user number to the first connection state user number is not smaller than the preset user number threshold value, determining that the neighboring cell is a second cell meeting preset conditions.

The preset threshold is used for limiting the connection state user number of the second cell to be smaller than the connection state user number of the first cell, and on the basis, the ratio of the difference value between the first connection state user number and the second connection state user number to the first connection state user number is not smaller than a preset user number threshold.

The preset user number threshold may be calculated according to an initial configuration user number of the first cell and an initial configuration user number of the neighboring cell, specifically, assuming that the first initial user number is the initial configuration user number of the first cell, and the second initial user number is the initial configuration user number of the neighboring cell, the preset user number difference threshold is a ratio of a difference value between the first initial user number and the second initial user number to the first initial user number: preset user difference threshold= (first initial user number-second initial user number)/first initial user data.

The first connection state user number is the user number in the first cell and in the current connection state, and the second connection state user number is the user number in the same coverage neighbor cell of the first cell and in the current connection state.

When load balancing is performed on the first cell, besides the first cell needs to meet the load balancing condition, namely the first cell is in a high load state, a second cell meeting the preset condition is selected, so that the situation that the second cell is in the high load state after a user of the first cell is switched to the second cell is avoided, and the second cell is triggered to perform load balancing, so that the user is switched back and forth between the first cell and the second cell is avoided.

Step 204, if the first cell belongs to a first base station and the second cell belongs to a second base station, and the first base station is different from the second base station, the first base station sends a resource request message to the second base station, where the resource request message includes a load measurement identifier and a measurement period, so that the second base station sends resource information of the second cell to the first base station according to the load measurement identifier and the measurement period.

And step 205, obtaining the second cell type and the load information of the second cell according to the resource information.

If the first cell belongs to the first base station and the second cell belongs to the second base station, the first cell and the second cell are indicated to belong to the same coverage between the stations, and the first base station is required to acquire the second cell type and the load information of the second cell from the second base station through an inter-base station X2 interface.

Optionally, the step of acquiring the second cell type of the second cell and the load information of the second cell includes: acquiring a second cell type of the second cell; and if the second cell type is NSA cell, acquiring load information of the second cell and load information of a third cell which is covered with the second cell, wherein the cell type of the third cell is a new air interface NR cell.

In view of the foregoing, if the second cell type is NSA cell, after the connection state user with dual connectivity in the first cell is switched to the second cell, the connection state user is connected to the second cell and is also connected to the NR neighboring cell covered with the second cell, that is, the third cell, so, in order to avoid that the connection state user with dual connectivity in the first cell is switched to the second cell, the load information of the third cell needs to be acquired while the load information of the second cell is acquired, so that the load state of the third cell needs to be considered when determining the balancing policy.

Referring to fig. 4, a schematic diagram of resource information interaction between base stations according to an embodiment of the present invention is shown, where eNB1 is a first base station corresponding to a first cell, eNB2 is a second base station corresponding to a second cell, and gNB1 is a third base station corresponding to a third cell. The first base station eNB1 sends a resource request message Resource Status Request to the second base station eNB2 through an X2 port; after the second base station receives the resource request message, it is determined that if the load measurement requested by the source base station is supported, a response message Resource Status Response is replied, and if the load measurement identifier Registration Request IE in the resource request message is set to "start", corresponding load measurement is started, the resource information of the second cell is measured at regular time according to the measurement period in the resource request message, and the resource information of the second cell is fed back to the first base station through Resource Status Update messages; if the load measurement flag Registration Request IE in the resource request message is set to "stop", the second base station stops the measurement of the resource information of the second cell.

In the embodiment of the invention, the resource request message and the response message both carry the flag bit of the NSA attribute of the cell, if the cell type of the second cell is NSA cell, after receiving the resource request message sent by the first base station, the second base station sets the flag bit of the NSA attribute of the second cell to 1, and simultaneously sends the resource request message to all the base stations corresponding to the NR neighbor cells of the second cell, namely, the third base station corresponding to the third cell, and the third base station feeds back the load information of the third cell to the second base station according to the measurement period in the resource request message. When the third base station feeds back the load information of the third cell to the second base station, the third base station may send Resource Status Update message to the second base station alone, or may add the load information of the third cell to Secondary RAT Data Usage Report message, and feed back the load information of the third cell to the second base station through Secondary RAT Data Usage Report message. If the second base station does not receive the response message of the third base station in one measurement period, the load information of one measurement period on the third cell can be continuously used, and the load information of the third cell can not be updated until the response cell of the third base station is received again.

And step 206, determining candidate users in the first cell according to the first cell type, the second cell type and the user information.

This step may refer to step 104, which is not described herein.

Optionally, if the foregoing method is adopted, the user reselection is performed if no candidate user satisfying the condition exists in the first cell, and specifically, the QCI screening condition may be rolled back when no candidate user exists in the first cell, and the connected user satisfying the preset level in the first cell is used as the candidate user.

In step 207, the user information includes a quality of service class identifier QCI and a user physical resource block PRB occupancy, and the candidate users are sorted in ascending order according to the QCI.

And step 208, if at least two candidate users have the same QCI level, sorting the at least two candidate users in a descending order according to the PRB occupancy rate of the users.

And step 209, determining the equalization level of the corresponding candidate user according to the sorting order.

In combination with the foregoing, it can be seen that, the higher the QCI level, the higher the service quality required by the corresponding communication service, and in order to reduce the influence of the resident cell of the switching user on the communication service with high service quality requirement in the process of carrying out load balancing on the first cell, the embodiment of the present invention carries out ascending order sorting on the candidate users according to the QCI level, and the lower the QCI level of the candidate user with the earlier sorting is, the priority is switched to the second cell. When at least two candidate users have the same QCI grade, the candidate users are ordered in a descending order according to the PRB occupancy rate of the users, and the candidate users with high PRB occupancy rate of the users are switched preferentially, so that the load balancing effect is improved. The PRB occupancy rate of the user indicates the PRB actually occupied by the user in a single radio frame, the minimum value is taken from the total number of PRBs supported by the system bandwidth of the cell of the single radio frame and the total number of PRBs permitted by software, and the ratio of the number of PRBs occupied by the user on the single radio frame to the minimum value is taken as the PRB occupancy rate of the user.

Optionally, if the first cell type is a non-NSA cell and the second cell type is a NSA cell, if the dual connectivity identifier of the candidate user is a second preset identifier, the equalization level of the candidate user is set to a first level. In the embodiment of the invention, the candidate users with the balance grade being the first grade are preferentially switched to the second cell.

The dual-connection capability identifier of the candidate user is a second preset identifier, which indicates that the candidate user has dual-connection capability.

In combination with the foregoing, it can be seen that, in the case where the first cell type is a non-NSA cell and the second cell type is a NSA cell, for a candidate user with dual connectivity, if the candidate user is continuously controlled to reside in the first cell, the candidate user is restricted from using the 5G network, while the second cell is a NSA cell, and the second cell supports both the 4G network and the 5G network, and if the candidate user with dual connectivity is handed over to the second cell, the candidate user can communicate through the 5G network while communicating with the 4G network normally, so that the communication quality of the user is improved, and for the second cell, the user with dual connectivity is increased, so that the utilization rate of the 5G network resource in the second cell is improved. Therefore, in the embodiment of the present invention, in the case that the first cell type is a non-NSA cell and the second cell type is a NSA cell, the equalization level of the candidate user with the dual connectivity identifier being the second preset identifier is set to the first level, so that the user with the dual connectivity is preferentially handed over to the second cell.

And step 210, calculating the number of equalizing users of the first cell according to the load information.

Optionally, if the first cell and the second cell belong to the same base station, the step of calculating the number of users for balancing the first cell according to the load information includes: acquiring load information of the first cell, wherein the load information comprises a first load quantity of the first cell and a connection state user number of the first cell; determining the number of the second cells and a second load amount of each second cell according to the load information of the second cells; calculating the total load of each second cell according to the second load; calculating an average load amount of the first cell and the second cell according to the first load amount, the total load amount and the number of the second cells; calculating the difference value between the first load quantity and the average load quantity to obtain a transfer load quantity; calculating the difference load amounts of the first cell and each second cell respectively; determining an equilibrium load amount of the first cell according to the transfer load amount and the difference load amount; and calculating the number of the equilibrium users of the first cell according to the equilibrium load quantity, the first load quantity and the connection state user number.

Assuming that there are m second cells, ls is a first load of a first cell, ln_i is a second load of an ith second cell, where the first cell and the second cell belong to the same base station, the above process of calculating the number of equalizing users of the first cell may be expressed as:

1. the total load LCm of the m second cells is calculated by equation (1).

Wherein i represents an i-th second cell, and i is an integer.

2. The average load amount LCa of the first cell and the m second cells is calculated by formula (2).

3. The above transfer load LC1 is calculated by the formula (3).

In the embodiment of the invention, the transfer load amount calculated by the formula (3) is the total balanced load amount of the first cell to be switched to m second cells.

4. The differential load amounts LC2 of the first cell and the i-th second cell are calculated by the formula (4), respectively.

In the embodiment of the present invention, the differential load amount calculated by the above formula (4) is a load amount that the first cell can switch to the ith second cell.

5. And taking the minimum value as the balanced load quantity of the first cell switched to the ith second cell in the transfer load quantity and the difference load quantity.

As can be seen from the foregoing, when m is greater than 1, that is, when at least two second cells exist, if the total balanced load is completely switched to one of the second cells, the load between the first cell and the second cell is unbalanced, and the second cell receiving the load of the first cell is likely to be in a high load state, so in the embodiment of the present invention, the minimum value in the formula (3) and the formula (4) is taken as the balanced load of the first cell switched to the i second cell, so that the load of each cell after load balancing is kept consistent or similar as much as possible.

6. The above balanced load amount is converted into the number of balanced users handed over to each second cell by the formula (5).

Wherein L is _Ni The number of equalized users needed to be handed over to the ith second cell for the first cell, LC _i For equalizing load quantity of first cell to ith second cell, LC _i The value of (2) is the minimum value in the above formula (3) and formula (4), nu is the number of connected state users in the first cell, D is the adjustment parameter, and the adjustment parameter can be set according to the actual requirement.

If the calculation result of the formula (5) is greater than 1, rounding down is used as the number of equalizing users, and if the calculation result of the formula (5) is less than 1, the number of equalizing users is 1. And adding the obtained balanced user numbers switched by each second cell to obtain the total balanced user number of the first cell.

Step 211, switching the candidate users in the first cell to the second cell according to the equalization level and the equalization user number.

In combination with the foregoing, the embodiment of the invention determines the candidate users according to the first cell type, the second cell type and whether the connected users in the first cell have dual-connection capability, thereby ensuring that the users can be matched with proper resident cells when load balancing is performed, and maximally improving the 5G resource utilization rate; and when the candidate users are switched, the balance grade of the candidate users is determined according to the QCI grade and the PRB occupancy rate of the users, so that the influence of a switching residence cell on high-communication-quality service is avoided, and the load balance effect is improved.

Optionally, if there are at least two second cells, the second cells are sorted in descending order according to the reference signal received power (RSRP, reference Signal Receiving power) of the second cells, and the candidate users are preferentially switched to the second cell with the first sorting.

Optionally, the user information includes a dual-connection capability identifier, and if the dual-connection capability identifier is a second preset identifier, a time window is set if the candidate user is switched to a second cell, and the candidate user is controlled to reside in the second cell in the time window; acquiring signal strengths of the first cell and the second cell; and ending the time window if the signal intensity of the first cell is larger than a first threshold value and the signal intensity of the second cell is smaller than a second threshold value.

The first threshold and the second threshold are both signal strength thresholds, and can be set according to actual needs, wherein the first threshold is larger than the second threshold.

When the residence cell of the user is switched, the residence cell of the user is switched based on the signal intensity of the cell in addition to the switching of the user based on the load balancing, if the switching process based on the signal intensity of the cell is not inhibited after the load balancing is carried out on the first cell, the user can possibly switch back and forth between the first cell and the second cell to influence the communication quality of the user, therefore, in the embodiment of the invention, the time window is set, the user with double connection capability is inhibited from being switched back to the first cell from the second cell in the running time of the time window, if the signal intensity of the second cell is detected to be smaller than the second threshold value in the running time of the time window, the signal intensity of the second cell is extremely poor, the normal communication requirement of the user cannot be met, and if the signal intensity of the first cell is detected to be greater than the first threshold value, the signal intensity of the first cell is indicated to be better, therefore, the inhibition on the candidate user can be eliminated in advance, and the candidate user can be switched back to the first cell with better signal intensity.

Optionally, the time window includes an end time, and if the end time of the time window is reached, a control release message is sent to the candidate user, where the control release message includes a frequency selection priority of each NSA cell; and determining the resident cells of the candidate users according to the frequency selection priority.

When a resident cell is selected for a cell, the judgment can be performed according to the frequency selection priority of the cell, so in the embodiment of the invention, when the ending time of the time window is reached, that is, the candidate user is not controlled to reside in the second cell any more, at this time, the candidate user can select a proper resident cell according to the frequency selection priority of each NSA cell in the control release message by sending the control release message to the candidate user with dual connection capability, and the candidate user preferentially selects the NSA cell with high frequency selection priority as the resident cell, thereby leading the user with dual connection capability to reside in the NSA cell as much as possible and improving the 5G resource utilization rate of the NSA cell.

In summary, the method determines candidate users according to the first cell type, the second cell type and whether the connected users in the first cell have dual-connection capability, so that when load balancing is performed, the method can ensure that proper resident cells can be matched for the users, improve the accuracy of load balancing, and furthest improve the 5G resource utilization rate; and when the candidate users are switched, the balance grade of the candidate users is determined according to the QCI grade and the PRB occupancy rate of the users, so that the influence of a switching residence cell on high-communication-quality service is avoided, and the load balance effect is improved.

Example III

Referring to fig. 5, a block diagram of a load balancing device according to a third embodiment of the present invention is shown, which specifically includes:

a first obtaining module 301, configured to obtain a first cell type of a first cell that satisfies a load balancing condition, and user information of a connection state user in the first cell.

A first determining module 302, configured to determine a second cell that meets a preset condition.

A second obtaining module 303, configured to obtain a second cell type of the second cell and load information of the second cell.

A second determining module 304, configured to determine a candidate user in the first cell according to the first cell type, the second cell type, and the user information, and determine an equalization level of the candidate user in the first cell.

And a user number calculating module 305, configured to calculate an equalized user number of the first cell according to the load information.

And the switching control module 306 is configured to switch the candidate users in the first cell to the second cell according to the equalization level and the number of equalization users.

The third embodiment is an embodiment of the apparatus corresponding to the first embodiment, and the detailed information may refer to the detailed description of the first embodiment, which is not repeated herein.

Example IV

Referring to fig. 6, a block diagram of a load balancing apparatus according to a third embodiment of the present invention is shown, which specifically includes:

a first obtaining module 401, configured to obtain a first cell type of a first cell that satisfies a load balancing condition, and user information of a connection state user in the first cell.

A first determining module 402, configured to determine a second cell that meets a preset condition.

The first determining module 402 includes:

a load amount obtaining submodule 4021, configured to obtain, if the first cell has at least one neighboring cell that covers the same cell as the first cell, a first load amount of the first cell and a second load amount of the neighboring cell;

a first determining submodule 4022 configured to determine a second cell that meets a preset condition according to a difference between the first load quantity and the second load quantity.

Optionally, the first load amount is a first PRB occupancy of the first cell, the second load amount is a second PRB occupancy of the neighbor cell, and the first determining submodule includes: a first determining unit, configured to determine that the neighboring cell is a second cell that satisfies a preset condition if a difference between the first PRB occupancy and the second PRB occupancy is greater than a preset PRB difference threshold.

Optionally, the first load amount is a first connection state user number of the first cell, the second load amount is a second connection state user number of the neighboring cell, and the first determining submodule includes: and the second determining unit is used for determining that the neighboring cell is a second cell meeting the preset condition if the difference value between the first connection state user number and the second connection state user number is larger than a preset threshold value and the ratio of the difference value between the first connection state user number and the second connection state user number to the first connection state user number is not smaller than the preset user number threshold value.

A second obtaining module 403, configured to obtain a second cell type of the second cell and load information of the second cell.

The second obtaining module 403 includes:

A resource request submodule 4031, configured to, if the first cell belongs to a first base station and the second cell belongs to a second base station, and if the first base station is different from the second base station, send a resource request message to the second base station by the first base station, where the resource request message includes a load measurement identifier and a measurement period, so that the second base station sends resource information of the second cell to the first base station according to the load measurement identifier and the measurement period;

and an acquisition submodule 4032, configured to acquire second cell type and load information of the second cell according to the resource information.

Optionally, the second obtaining module 403 includes: a first obtaining sub-module, configured to obtain a second cell type of the second cell; and the second acquisition sub-module is used for acquiring the load information of the second cell and the load information of a third cell which is covered by the second cell if the second cell type is an NSA cell, wherein the cell type of the third cell is a new air interface NR cell.

A second determining module 404, configured to determine a candidate user in the first cell according to the first cell type, the second cell type, and the user information, and determine an equalization level of the candidate user in the first cell.

The user information includes a quality of service class identifier QCI and a user physical resource block PRB occupancy, and the second determining module 404 includes:

a first sorting sub-module 4041, configured to sort the candidate users in an ascending order according to the QCI;

a second sorting sub-module 4042, configured to sort, if there are at least two candidate users with the same QCI level, the at least two candidate users in descending order according to the PRB occupancy of the users;

equalization level determination submodule 4043 determines an equalization level of the corresponding candidate user according to the ranking order.

Optionally, the user information includes a quality of service class identifier QCI, and the second determining module 404 includes: and the first candidate user determining submodule is used for taking the connection state user as a candidate user if the QCI of the connection state user does not meet the preset grade.

Optionally, the user information includes a dual connectivity identifier, and the second determining module 404 includes: a second candidate user determining submodule, configured to, when the first cell type is a non-independent networking NSA cell, use a connection state user whose dual connection capability identifier is a first preset identifier in the first cell as a candidate user; or a third candidate user determining submodule, configured to, in a case where the first cell type is a non-NSA cell and the second cell type is a NSA cell, take a connection state user in the first cell as a candidate user.

Optionally, in the case that the first cell type is a non-NSA cell and the second cell type is a NSA cell, the third candidate user determination submodule includes: and the balance grade determining unit is used for setting the balance grade of the candidate user as a first grade if the double-connection capacity identifier of the candidate user is a second preset identifier.

And a user number calculating module 405, configured to calculate an equalized user number of the first cell according to the load information.

Optionally, the first cell and the second cell belong to the same base station, and the user number calculation module includes:

a first load information obtaining sub-module, configured to obtain load information of the first cell, where the load information includes a first load amount of the first cell and a connection state user number of the first cell;

a second load information obtaining sub-module, configured to determine, according to load information of the second cells, the number of the second cells and a second load amount of each second cell;

a total load calculation operator module, configured to calculate a total load of each second cell according to the second load;

an average load calculation operator module for calculating an average load of the first cell and the second cell according to the first load, the total load and the number of the second cells;

A load transfer calculation operator module, configured to calculate a difference between the first load amount and the average load amount to obtain a load transfer;

a differential load calculation operator module, configured to calculate differential load amounts of the first cell and each of the second cells;

an equilibrium load amount determination submodule, configured to determine an equilibrium load amount of the first cell according to the transferred load amount and the differential load amount;

and the balancing user number calculation sub-module is used for calculating the balancing user number of the first cell according to the balancing load quantity, the first load quantity and the connection state user number.

And a switching control module 406, configured to switch the candidate users in the first cell to the second cell according to the equalization level and the number of equalization users.

Optionally, the user information includes a dual connectivity identifier, and if the dual connectivity identifier is a second preset identifier, the apparatus further includes:

the residence control module is used for setting a time window if the candidate user is switched to the second cell, and controlling the candidate user to reside in the second cell in the time window;

the signal strength acquisition module is used for acquiring the signal strengths of the first cell and the second cell;

And the time window control module is used for ending the time window if the signal intensity of the first cell is larger than a first threshold value and the signal intensity of the second cell is smaller than a second threshold value.

Optionally, the time window includes an end time, and the apparatus further includes:

the release control module is used for sending a control release message to the candidate users if the ending time of the time window is reached, wherein the control release message comprises the frequency selection priority of each NSA cell;

and the resident cell determining module is used for determining resident cells of the candidate users according to the frequency selection priority.

In the fourth embodiment, the device embodiment corresponding to the second method embodiment may refer to the detailed description of the second embodiment, and will not be described herein.

The embodiment of the invention also provides an electronic device, referring to fig. 7, including: a processor 701, a memory 702, and a computer program 7021 stored on the memory and executable on the processor, which when executed implements the load balancing method of the foregoing embodiments.

The embodiment of the invention also provides a readable storage medium, which when the instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to execute the load balancing method of the previous embodiment.

For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. A method of load balancing, the method comprising:

determining a second cell meeting preset conditions;

determining candidate users in the first cell according to the first cell type, the second cell type and the user information, and determining the balance level of the candidate users in the first cell; the user information includes a dual connectivity identifier, and the step of determining candidate users in the first cell includes: under the condition that the first cell type is a non-independent networking NSA cell, a connection state user with double connection capacity marked as a first preset mark in the first cell is used as a candidate user; or under the condition that the first cell type is a non-NSA cell and the second cell type is a NSA cell, taking the connected state user in the first cell as a candidate user;

2. The method of claim 1, wherein the user information comprises a quality of service class identification, QCI, and a user physical resource block, PRB, occupancy, and wherein the step of determining the equalization class of the candidate user in the first cell comprises:

ascending order sorting is carried out on the candidate users according to the QCI;

if at least two candidate users have the same QCI grade, sorting the at least two candidate users in a descending order according to the PRB occupancy rate of the users;

and determining the equalization level of the corresponding candidate user according to the sorting order.

3. The method of claim 1, wherein the user information comprises a quality of service class identification, QCI, and wherein the step of determining candidate users in the first cell comprises:

and if the QCI of the connected user does not meet the preset level, taking the connected user as a candidate user.

4. The method of claim 1, wherein the step of determining the equalization level of the candidate user in the first cell, in the case where the first cell type is a non-NSA cell and the second cell type is a NSA cell, comprises:

And if the double-connection capacity identifier of the candidate user is a second preset identifier, setting the balance grade of the candidate user as a first grade.

5. The method according to claim 1, wherein the step of determining the second cell satisfying the preset condition comprises:

if the first cell has at least one adjacent cell which is covered with the first cell, acquiring a first load quantity of the first cell and a second load quantity of the adjacent cell;

and determining a second cell meeting a preset condition according to the difference value of the first load quantity and the second load quantity.

6. The method of claim 5, wherein the first load amount is a first PRB occupancy of the first cell and the second load amount is a second PRB occupancy of the neighbor cell, and wherein the step of determining a second cell that meets a preset condition based on a difference between the first load amount and the second load amount comprises:

and if the difference value between the first PRB occupancy rate and the second PRB occupancy rate is larger than a preset PRB difference threshold, determining the neighbor cell as a second cell meeting preset conditions.

7. The method of claim 5, wherein the first load amount is a first connection state user number of the first cell, the second load amount is a second connection state user number of the neighboring cell, and the step of determining a second cell satisfying a preset condition according to a difference between the first load amount and the second load amount comprises:

And if the difference value between the first connection state user number and the second connection state user number is larger than a preset threshold value and the ratio of the difference value between the first connection state user number and the second connection state user number to the first connection state user number is not smaller than the preset user number threshold value, determining that the neighboring cell is a second cell meeting preset conditions.

8. The method according to claim 1, wherein the step of acquiring the second cell type of the second cell and the load information of the second cell comprises:

acquiring a second cell type of the second cell;

and if the second cell type is NSA cell, acquiring load information of the second cell and load information of a third cell which is covered with the second cell, wherein the cell type of the third cell is a new air interface NR cell.

9. The method according to claim 1, wherein the first cell and the second cell belong to the same base station, and the step of calculating the number of users for balancing the first cell according to the load information comprises:

acquiring load information of the first cell, wherein the load information comprises a first load quantity of the first cell and a connection state user number of the first cell;

Determining the number of the second cells and a second load amount of each second cell according to the load information of the second cells;

calculating the total load of each second cell according to the second load;

calculating an average load amount of the first cell and the second cell according to the first load amount, the total load amount and the number of the second cells;

calculating the difference value between the first load quantity and the average load quantity to obtain a transfer load quantity;

calculating the difference load amounts of the first cell and each second cell respectively;

determining an equilibrium load amount of the first cell according to the transfer load amount and the difference load amount;

and calculating the number of the equilibrium users of the first cell according to the equilibrium load quantity, the first load quantity and the connection state user number.

10. The method according to claim 1, wherein the step of acquiring the second cell type of the second cell and the load information of the second cell comprises:

if the first cell belongs to a first base station, the second cell belongs to a second base station, and the first base station is different from the second base station, the first base station sends a resource request message to the second base station, wherein the resource request message comprises a load measurement identifier and a measurement period, so that the second base station sends resource information of the second cell to the first base station according to the load measurement identifier and the measurement period;

And acquiring second cell type and load information of the second cell according to the resource information.

11. The method of claim 1, wherein the user information includes a dual connectivity capability identifier, and wherein if the dual connectivity capability identifier is a second preset identifier, the method further comprises:

if the candidate user is switched to the second cell, setting a time window, and controlling the candidate user to reside in the second cell in the time window;

acquiring signal strengths of the first cell and the second cell;

and ending the time window if the signal intensity of the first cell is larger than a first threshold value and the signal intensity of the second cell is smaller than a second threshold value.

12. The method of claim 11, wherein the time window includes an end time, the method further comprising:

if the ending time of the time window is reached, sending a control release message to the candidate user, wherein the control release message comprises the frequency selection priority of each NSA cell;

and determining the resident cells of the candidate users according to the frequency selection priority.

13. The method of claim 1, wherein the meeting a load balancing condition comprises: the PRB occupancy rate of the first cell is larger than a preset PRB threshold value, or the connection state user number of the first cell is larger than a preset user number threshold value.

14. A load balancing apparatus, the apparatus comprising:

a second determining module, configured to determine a candidate user in the first cell according to the first cell type, the second cell type and the user information, and determine an equalization level of the candidate user in the first cell; the user information includes a dual connectivity identifier, and the second determining module includes: a second candidate user determining submodule, configured to, when the first cell type is a non-independent networking NSA cell, use a connection state user whose dual connection capability identifier is a first preset identifier in the first cell as a candidate user; or a third candidate user determining submodule, configured to, when the first cell type is a non-NSA cell and the second cell type is a NSA cell, take a connection state user in the first cell as a candidate user;

15. The apparatus of claim 14, wherein the user information comprises a quality of service class identification QCI and a user physical resource block PRB occupancy, and wherein the second determining module comprises:

a first sorting sub-module, configured to sort the candidate users in ascending order according to the QCI;

a second sorting sub-module, configured to sort, if at least two candidate users have the same QCI level, the at least two candidate users in descending order according to the PRB occupancy of the users;

and the equalization grade determining submodule determines the equalization grade of the corresponding candidate user according to the sorting order.

16. The apparatus of claim 14, wherein the user information comprises a quality of service class identification QCI, and wherein the second determining module comprises:

and the first candidate user determining submodule is used for taking the connection state user as a candidate user if the QCI of the connection state user does not meet the preset grade.

17. The apparatus of claim 14, wherein the third candidate user determination submodule, in the case where the first cell type is a non-NSA cell and the second cell type is a NSA cell, comprises:

and the balance grade determining unit is used for setting the balance grade of the candidate user as a first grade if the double-connection capacity identifier of the candidate user is a second preset identifier.

18. The apparatus of claim 14, wherein the first determining module comprises:

the load quantity acquisition submodule is used for acquiring the first load quantity of the first cell and the second load quantity of the adjacent cell if the first cell has at least one adjacent cell which is covered with the first cell;

and the first determining submodule is used for determining a second cell meeting a preset condition according to the difference value of the first load quantity and the second load quantity.

19. The apparatus of claim 18, wherein the first amount of load is a first PRB occupancy of the first cell and the second amount of load is a second PRB occupancy of the neighbor cell, the first determination submodule comprising:

a first determining unit, configured to determine that the neighboring cell is a second cell that satisfies a preset condition if a difference between the first PRB occupancy and the second PRB occupancy is greater than a preset PRB difference threshold.

20. The apparatus of claim 18, wherein the first load amount is a first number of connected state users of the first cell and the second load amount is a second number of connected state users of the neighbor cell, the first determining submodule comprising:

and the second determining unit is used for determining that the neighboring cell is a second cell meeting the preset condition if the difference value between the first connection state user number and the second connection state user number is larger than a preset threshold value and the ratio of the difference value between the first connection state user number and the second connection state user number to the first connection state user number is not smaller than the preset user number threshold value.

21. The apparatus of claim 14, wherein the second acquisition module comprises:

a first obtaining sub-module, configured to obtain a second cell type of the second cell;

and the second acquisition sub-module is used for acquiring the load information of the second cell and the load information of a third cell which is covered by the second cell if the second cell type is an NSA cell, wherein the cell type of the third cell is a new air interface NR cell.

22. The apparatus of claim 14, wherein the first cell and the second cell belong to the same base station, and wherein the user number calculation module comprises:

23. The apparatus of claim 14, wherein the second acquisition module comprises:

a resource request sub-module, configured to, if the first cell belongs to a first base station and the second cell belongs to a second base station, where the first base station is different from the second base station, send a resource request message to the second base station, where the resource request message includes a load measurement identifier and a measurement period, so that the second base station sends resource information of the second cell to the first base station according to the load measurement identifier and the measurement period;

and the acquisition sub-module is used for acquiring the second cell type and the load information of the second cell according to the resource information.

24. The apparatus of claim 14, wherein the user information comprises a dual connectivity capability identifier, and wherein if the dual connectivity capability identifier is a second preset identifier, the apparatus further comprises:

25. The apparatus of claim 24, wherein the time window comprises an end time, the apparatus further comprising:

26. The apparatus of claim 14, wherein the satisfaction of the load balancing condition comprises: the PRB occupancy rate of the first cell is larger than a preset PRB threshold value, or the connection state user number of the first cell is larger than a preset user number threshold value.

27. An electronic device, comprising:

processor, memory and computer program stored on the memory and executable on the processor, characterized in that the processor implements the load balancing method according to any of claims 1 to 13 when executing the program.

28. A readable storage medium, characterized in that instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the load balancing method according to any one of claims 1 to 13.