Load balancing method, network side device and readable storage medium

Abstract

The embodiments of the present application provide a load balancing method, a network-side device, and a readable storage medium related to the field of communication technology. The method includes: determining a load balancing method according to the type of beam used by the overloaded cell; and performing load balancing on the overloaded cell according to the determined load balancing method. The embodiments of the present application implement the multi-beam characteristics of the 5G network and provide an optimization strategy for load balancing. The load balancing method is determined based on the beam type of the overloaded cell, which can make the load balancing result better.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a load balancing method, a network side device and a readable storage medium. Background Art

[0002] The existing load balancing strategy considers two situations when selecting cells: partial co-coverage and full co-coverage. Among them, full co-coverage cells refer to cells with co-coverage in two frequency bands within a base station. If the co-coverage neighboring cells within the base station contain a mixture of full co-coverage neighboring cells and partial co-coverage neighboring cells, when selecting cells for load balancing, full co-coverage neighboring cells are given priority, and partial co-coverage neighboring cells are second. When there are multiple neighboring cells of the same coverage type, the neighboring cell with the lowest load is given priority based on the physical resource block (PRB) utilization and the reported reference signal receiving power (RSRP). If the loads are the same, a neighboring cell is randomly selected.

[0003] Obviously, when the existing solutions are used to balance the load in 5G networks, the load balancing strategy cannot reflect the characteristics of 5G networks. Summary of the invention

[0004] The present application provides a load balancing method, a network-side device, and a readable storage medium, which can provide an optimization strategy for load balancing based on the characteristics of multi-beams in 5G networks. The load balancing method is determined based on the beam type of the overloaded cell, which can make the load balancing result better. The technical solution is as follows:

[0005] In a first aspect, a load balancing method is provided, the method comprising:

[0006] Determine the load balancing method based on the type of beam used by the overloaded cell;

[0007] According to the determined load balancing method, load balancing is performed on the overloaded cell.

[0008] In one possible implementation, when the uplink average total physical resource block (PRB) utilization of the synchronization signal block (SSB) beam in a cell using a wide beam exceeds a second uplink high load threshold, and / or the downlink average total PRB utilization of the SSB beam exceeds a second downlink high load threshold, the cell using a wide beam is determined to be overloaded.

[0009] In another possible implementation, when the uplink PRB utilization of at least one SSB beam in a cell using a narrow beam exceeds a first uplink high load threshold, and / or the downlink PRB utilization of at least one SSB beam exceeds a first downlink high load threshold, the cell using a narrow beam is determined to be overloaded.

[0010] In another possible implementation, determining the load balancing mode according to the type of beam used by the overloaded cell includes:

[0011] When the type of beam used by the overloaded cell is a wide beam, the load balancing mode is determined to be cell switching.

[0012] In another possible implementation, determining the load balancing mode according to the type of beam used by the overloaded cell includes:

[0013] When the type of beam used by the overloaded cell is a narrow beam, in response to the situation where some beams in the overloaded cell are overloaded,

[0014] If there is a target beam in the overloaded cell, determining that the load balancing mode is beam switching;

[0015] If the target beam does not exist in the overloaded cell, determining that the load balancing mode is cell switching;

[0016] Among them, the target beam is a beam determined from candidate beams, and the candidate beam is a beam in the overloaded cell, wherein the uplink PRB utilization and / or downlink PRB utilization of the SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

[0017] In another possible implementation, the situation in which some beams in the overloaded cell are overloaded includes: an uplink PRB utilization rate of the first SSB beam exceeds a first uplink high load threshold, and / or a downlink PRB utilization rate of the first SSB beam exceeds a first downlink high load threshold, the first SSB beam is an SSB of any overloaded beam in the partially overloaded beams, and the user equipment on the first SSB beam is the user equipment to be switched; the method further includes:

[0018] When the uplink PRB utilization rate of the first SSB beam exceeds the first uplink high load threshold, among the candidate beams whose RSRP is higher than the RSRP threshold for beam switching, the beam with the lowest uplink PRB utilization rate is selected as the target beam; or,

[0019] When the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, among the beams whose RSRP of the beams in the candidate beams is higher than the RSRP threshold of beam switching, selecting the beam with the lowest downlink PRB utilization rate as the target beam;

[0020] There is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching, and it is determined that there is no target beam in the overloaded cell.

[0021] In yet another possible implementation, the method further includes:

[0022] Sending periodic measurement information to the user equipment to be switched, where the periodic measurement information is used to instruct the user equipment to be switched to report all SSB indexes and corresponding RSRPs of the overloaded cell;

[0023] Receive measurement information reported by the user equipment to be switched, where the measurement information carries all SSB indexes and corresponding RSRPs.

[0024] In yet another possible implementation, performing load balancing on the overloaded cell according to the determined load balancing mode includes:

[0025] The user equipment to be switched in the overloaded cell is switched from the first SSB beam to the target beam.

[0026] In yet another possible implementation, the method further includes:

[0027] When the uplink PRB utilization rates of all SSB beams in the overloaded cell exceed the first uplink high load threshold, and the downlink PRB utilization rates of all SSB beams in the overloaded cell exceed the first downlink high load threshold, determining that the load balancing mode is cell switching; or,

[0028] When the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold, and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold, the load balancing mode is determined to be cell switching.

[0029] In yet another possible implementation, performing load balancing on the overloaded cell according to the determined load balancing mode includes:

[0030] The user equipment to be switched in the overloaded cell is switched from the overloaded cell to a target cell, wherein the target cell is not overloaded.

[0031] In yet another possible implementation manner, the determining of the target cell includes:

[0032] Determine a candidate neighboring cell from the neighboring cells of the overloaded cell, wherein the candidate neighboring cell is at least one cell whose uplink average total PRB utilization rate of the SSB beam and / or the downlink average total PRB utilization rate of the SSB beam in the neighboring cell is lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold;

[0033] Determine the target cell from the candidate neighboring cells in the following manner:

[0034] In the case where the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell;

[0035] In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell;

[0036] In view of the situation that the overloaded cell is overloaded in both the uplink and downlink directions, the direction with high PRB utilization in the overload direction is determined, and a cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell.

[0037] In yet another possible implementation manner, the determining of the target cell includes:

[0038] Determine, according to a preset neighboring cell relationship, a cell using a wide beam in the candidate neighboring cells;

[0039] The target cell is determined from cells using wide beams among the candidate neighboring cells, wherein the preset neighboring cell relationship includes type information of beams used by each cell.

[0040] In yet another possible implementation, the performing cell selection on the candidate neighboring cell to obtain the target cell includes:

[0041] When the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate, the weight ω of each candidate cell is calculated using the following formula:

[0042] ω=((1-P1)*V1+Q*V2-(m / N)*V3+n*V4);

[0043] When the candidate neighboring cells include multiple candidate cells with the same downlink average total PRB utilization rate, the weight ω of each candidate cell is calculated using the following formula:

[0044] ω=((1-P2)*V5+Q*V2-(m / N)*V3+n*V4);

[0045] Wherein, P1 is the average total PRB utilization rate of uplink, P2 is the average total PRB utilization rate of downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of user equipment supported by the cell, and n is the value assigned to the cell type. When the cell type is an intra-site cell, n is 1, and when the cell type is an intra-site cell, n is 0;

[0046] V1 is the weight corresponding to the uplink average total PRB utilization, V2 is the weight corresponding to the RSRP of the cell, V3 is the weight corresponding to the number of user equipment connected to the cell, V4 is the weight corresponding to the cell type, and V5 is the weight corresponding to the downlink average total PRB utilization, and V1>V3>V2>V4, V5>V3>V2>V4;

[0047] A cell whose weight satisfies a condition is selected from the multiple candidate cells as the target cell.

[0048] In a second aspect, a network side device is provided, including:

[0049] Memory for storing computer programs;

[0050] a transceiver, for transmitting and receiving data under the control of the processor;

[0051] A processor is configured to read the computer program in the memory and perform the following operations:

[0052] Determine the load balancing method based on the type of beam used by the overloaded cell;

[0053] According to the determined load balancing method, load balancing is performed on the overloaded cell.

[0054] In a possible implementation manner, the processor is specifically configured to, when the type of beam used by the overloaded cell is a wide beam, determine that the load balancing method is cell switching.

[0055] In another possible implementation, the processor is specifically configured to, when the type of the beam used by the overloaded cell is a narrow beam, for a situation where some beams in the overloaded cell are overloaded, if there is a target beam in the overloaded cell, determine that the load balancing mode is beam switching; if there is no target beam in the overloaded cell, determine that the load balancing mode is cell switching;

[0056] Among them, the target beam is a beam determined among the candidate beams, and the candidate beam is a beam in the overloaded cell, in which the uplink physical resource block PRB utilization and / or downlink PRB utilization of the synchronization signal block SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

[0057] In another possible implementation, the processor is further used to, when the uplink PRB utilization rates of all SSB beams in the overloaded cell exceed the first uplink high load threshold, and the downlink PRB utilization rates of all SSB beams in the overloaded cell exceed the first downlink high load threshold, determine that the load balancing mode is cell switching; or,

[0058] When the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold, and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold, the load balancing mode is determined to be cell switching.

[0059] In yet another possible implementation, the processor is specifically configured to switch the user equipment to be switched in the overloaded cell from the overloaded cell to a target cell, wherein the target cell is not overloaded.

[0060] In another possible implementation, the processor is further used to determine a candidate neighboring cell from the neighboring cells of the overloaded cell, wherein the candidate neighboring cell is at least one cell whose uplink average total PRB utilization of the SSB beam in the neighboring cell and / or the downlink average total PRB utilization of the SSB beam is lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold; and determine the target cell from the candidate neighboring cells in the following manner,

[0061] In the case where the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell;

[0062] In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell;

[0063] In view of the situation that the overloaded cell is overloaded in both the uplink and downlink directions, the direction with high PRB utilization in the overload direction is determined, and a cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell.

[0064] In yet another possible implementation, the processor is specifically configured to:

[0065] When the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate, the weight ω of each candidate cell is calculated using the following formula:

[0066] ω=((1-P1)*V1+Q*V2-(m / N)*V3+n*V4);

[0067] When the candidate neighboring cells include multiple candidate cells with the same downlink average total PRB utilization rate, the weight ω of each candidate cell is calculated using the following formula:

[0068] ω=((1-P2)*V5+Q*V2-(m / N)*V3+n*V4);

[0069] Wherein, P1 is the average total PRB utilization rate of uplink, P2 is the average total PRB utilization rate of downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of user equipment supported by the cell, and n is the value assigned to the cell type. When the cell type is an intra-site cell, n is 1, and when the cell type is an intra-site cell, n is 0;

[0070] V1 is the weight corresponding to the uplink average total PRB utilization, V2 is the weight corresponding to the RSRP of the cell, V3 is the weight corresponding to the number of user equipment connected to the cell, V4 is the weight corresponding to the cell type, and V5 is the weight corresponding to the downlink average total PRB utilization, and V1>V3>V2>V4, V5>V3>V2>V4;

[0071] A cell whose weight satisfies a condition is selected from the multiple candidate cells as the target cell.

[0072] In a third aspect, a network side device is provided, including:

[0073] A determination unit, configured to determine a load balancing method according to a type of beam used by the overloaded cell;

[0074] The execution unit is used to perform load balancing on the overloaded cell according to the determined load balancing method.

[0075] In a fourth aspect, a processor-readable storage medium is provided, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the load balancing method shown in the first aspect of the present application.

[0076] The beneficial effects of the technical solution provided by this application are:

[0077] The embodiment of the present application provides a load balancing optimization strategy based on the multi-beam characteristics of the 5G network. The load balancing method is determined based on the beam type of the overloaded cell, which can make the load balancing result better. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0079] Figure 1 A flow chart of a load balancing method provided in an embodiment of the present application;

[0080] Figure 2 A flow chart of a load balancing method provided in another embodiment of the present application;

[0081] Figure 3 A schematic diagram of a flow chart of determining whether a target beam exists in an overloaded cell in a load balancing method provided in an embodiment of the present application;

[0082] Figure 4 A schematic diagram of a flow chart of determining whether a target beam exists in an overloaded cell in a load balancing method provided in another embodiment of the present application;

[0083] Figure 5 A schematic diagram of a flow chart of determining whether there is a target beam in an overloaded cell in a load balancing method provided in another embodiment of the present application;

[0084] Figure 6 A schematic diagram of the structure of a network side device provided in an embodiment of the present application;

[0085] Figure 7 A schematic diagram of the structure of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0086] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present invention.

[0087] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0088] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0089] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal equipment and network side equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0090] First, several terms involved in this application are introduced and explained:

[0091] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0092] The network side device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network side device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network side device may also coordinate the attribute management of the air interface. For example, the network side device involved in the embodiments of the present application may be a network side device (Base TransceiverStation, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network side device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network side device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network side device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0093] The network side device and the terminal device can each use one or more antennas for multiple input multiple output (MIMO) transmission. MIMO transmission can be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0094] The existing load balancing strategy considers two situations when selecting cells: partial co-coverage and complete co-coverage.

[0095] First, for some cells with the same coverage, the specific load balancing strategy is as follows:

[0096] 1. Balanced user device selection

[0097] The user-level physical resource block PRB occupancy rate is used to screen user equipment, and the user equipment with a PRB occupancy rate lower than the set PRB occupancy threshold is filtered out, in order to ensure that user equipment with a high PRB occupancy rate is given priority for balancing. Operators can configure the user-level PBR occupancy rate. This threshold is set by the operator, and the user equipment corresponding to the PRB threshold that exceeds this threshold is balanced.

[0098] 2. Community selection

[0099] After the user equipment reports the A5 measurement report for load balancing purposes, the base station determines whether there is a target neighboring cell among the reported neighboring cells. If there is a target neighboring cell, the user equipment is switched to the target neighboring cell. If multiple target neighboring cells are reported, the cell with the highest RSRP (Reference Signal Receiving Power) is selected for switching. If there is no target neighboring cell, the user equipment is not switched.

[0100] The base station determines whether there is a target neighboring cell among the reported neighboring cells, which is specifically achieved through the PRB utilization rate corresponding to the cell. If there is a cell whose PRB utilization rate is lower than the corresponding threshold among the reported neighboring cells, it is the above-mentioned target neighboring cell.

[0101] Second, for the case of completely identical coverage cells, the specific load balancing strategy is as follows:

[0102] 1. Balanced user device selection

[0103] a) Selection based on PRB utilization

[0104] The user-level PRB occupancy rate is used to screen user equipment and filter out user equipment whose PRB occupancy rate is lower than the set PRB occupancy threshold. The purpose is to ensure that user equipment with high PRB occupancy rate is given priority for balancing. Operators can configure the user-level PRB occupancy rate.

[0105] b) Selection based on 5QI

[0106] A 5G QoS Identifier (5QI) is set to be unbalanced, and the user equipment including the 5QI is removed from the queue selected by the user equipment.

[0107] 2. Community selection

[0108] In a two-layer network, there will be only one neighboring cell with complete coverage. When the load detection cycle timer times out, if the cell is under high load, the neighboring cell relationship table will be queried to find the neighboring cell with complete coverage.

[0109] In the case of multi-layer networking, there will be multiple neighboring cells with complete coverage. When the load detection cycle timer times out, if the cell is overloaded, the neighboring cell relationship table is queried and a random one is selected from other neighboring cells with complete coverage.

[0110] Obviously, the existing cell selection strategy only considers the PRB utilization rate and reported RSRP of the selected cell, but does not consider the number of user devices in the selected cell. In addition, no priority strategy is given for whether the selected cell is an intra-site or inter-site cell. Moreover, the cell selection strategy considers the selection of the cell, but does not distinguish between the wide and narrow beams of the cell.

[0111] In view of this, the load balancing method, network side device and readable storage medium provided in the present application are intended to solve the above technical problems of the prior art.

[0112] Specifically, an embodiment of the present application provides a load balancing method: in view of the multi-beam characteristics of the 5G network, a load balancing optimization strategy is provided, and the load balancing method is determined based on the beam type of the overloaded cell, which can make the load balancing result better.

[0113] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0114] The present application provides a load balancing method, such as Figure 1As shown, the method includes:

[0115] S110, determining a load balancing method according to the type of beam used by the overloaded cell;

[0116] S120. Perform load balancing on the overloaded cells according to the determined load balancing method.

[0117] Specifically, in this embodiment, for overloaded cells with wide beams, the load balancing method of cell switching is adopted; for overloaded cells with narrow beams, it is necessary to determine the load balancing method based on whether there is a target beam in the overloaded cell. Specifically: if there is a target beam, beam switching is preferentially selected as the load balancing method to reduce transmission delay; if there is no target beam, cell switching is selected as the load balancing method.

[0118] The following is combined with Figures 2 to 4 A technical solution of a load balancing method provided in an embodiment of the present application is described in detail.

[0119] like Figure 2 As shown, the method includes:

[0120] S210. Determine whether the beam type used by the current overloaded cell is a wide beam. If so, execute S220; if not, execute S270.

[0121] S220: Determine a candidate neighboring cell from neighboring cells of the overloaded cell.

[0122] Specifically, in this embodiment, cells whose uplink average total physical resource block PRB utilization of the synchronization signal block SSB (SS / PBCH block) beam and / or downlink average total PRB utilization of the SSB beam are lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold can be selected from the neighboring cells of the overloaded cell as candidate neighboring cells.

[0123] It should be noted that the second uplink high load warning threshold is lower than the uplink high load threshold corresponding to the cell (UlAlarmOverLoadTotalPrbTh, that is, the second uplink high load threshold below), and the second downlink high load warning threshold is lower than the downlink high load threshold corresponding to the cell (DlAlarmOverLoadTotalPrbTh, that is, the second downlink high load threshold below).

[0124] S230. Determine whether there is a cell using a wide beam in the candidate neighboring cells. If so, execute S240. If not, execute S250.

[0125] Specifically, in this embodiment, the type of beam used by each candidate neighboring cell can be determined based on each candidate neighboring cell and a preset neighboring cell relationship, wherein the preset neighboring cell relationship includes type information of the beam used by each cell.

[0126] That is to say, the type information of the beam used by each candidate neighboring cell can be found from the preset neighboring cell relationship, so as to determine whether there is a cell using a wide beam in the candidate neighboring cell.

[0127] S240: Perform cell selection for the wide-beam cell in the candidate neighboring cell to obtain a target cell.

[0128] Specifically, in this embodiment, a cell whose uplink average total PRB utilization rate satisfies the condition is selected from the wide beam cells in the candidate neighboring cells as the target cell, that is, the wide beam cells in the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization rate to obtain the target cell; or,

[0129] A cell whose downlink average total PRB utilization rate meets the condition is selected from the wide beam cells in the candidate neighboring cells as the target cell, that is, the wide beam cells in the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization rate to obtain the target cell.

[0130] S250: Perform cell selection for the candidate neighboring cells to obtain a target cell.

[0131] Specifically, in this embodiment, a cell whose uplink average total PRB utilization rate satisfies the condition is selected from the candidate neighboring cells as the target cell, that is, the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization rate to obtain the target cell; or,

[0132] A cell whose downlink average total PRB utilization rate meets the conditions is selected from the candidate neighboring cells as the target cell, that is, the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization rate to obtain the target cell.

[0133] That is to say, in the case where the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization meets the conditions is selected from the candidate neighboring cells as the target cell, that is, the overloaded cell is a case where the uplink average total PRB utilization of the SSB beam exceeds the second uplink high load threshold, and the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization. For example, the cell with the smallest uplink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0134] In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization meets the conditions is selected from the candidate neighboring cells as the target cell, that is, the overloaded cell is a case where the downlink average total PRB utilization of the SSB beam exceeds the second downlink high load threshold, and the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization. For example, the cell with the smallest downlink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0135] In the case where both the uplink and downlink directions are overloaded, the direction with high PRB utilization in the overloaded direction is determined, and the cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell, that is, the overloaded cell is the case where the uplink average total PRB utilization of the SSB beam exceeds the second uplink high load threshold, and the downlink average total PRB utilization of the SSB beam exceeds the second downlink high load threshold. If the uplink overload is higher than the downlink overload, that is, the uplink average total PRB utilization of the SSB beam is greater than the downlink average total PRB utilization of the SSB beam, then the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization of the SSB beam, for example, the cell with the smallest uplink average total PRB utilization can be selected from the candidate neighboring cells as the target cell; otherwise, the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization, for example, the cell with the smallest downlink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0136] It should be noted that in S240, the method of determining the target cell from the cells using wide beams in the candidate neighboring cells is similar to that in S250, and for the sake of brevity of description, it will not be repeated here.

[0137] S260: Switch the user equipment to be switched in the overloaded cell from the overloaded cell to the target cell.

[0138] S270. Determine whether there is a target beam in the overloaded cell. If so, execute S280. If not, execute S220-S260.

[0139] Specifically, in this embodiment, when the current overloaded cell uses a narrow beam, the following can be selected from the beams of the current overloaded cell: the uplink physical resource block PRB utilization and / or downlink physical resource block PRB utilization of the synchronization signal block SSB beam, which is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold, as a candidate beam.

[0140] Among them, the first uplink high load warning threshold is the uplink high load warning threshold (UlAlarmOverLoadTotalPrbThPerSsb) corresponding to SSB, and the first downlink high load warning threshold is the downlink high load warning threshold (DlAlarmOverLoadTotalPrbThPerSsb) corresponding to SSB.

[0141] It should be noted that the first uplink high load warning threshold is lower than the uplink high load threshold corresponding to SSB (the first uplink high load threshold hereinafter), and the first downlink high load warning threshold is lower than the downlink high load threshold corresponding to SSB (the first downlink high load threshold hereinafter).

[0142] Then determine the target beam from the candidate beams.

[0143] Specifically, in the case of uplink overload, among the candidate beams whose RSRP is higher than the beam switching RSRP threshold, the beam with the lowest uplink PRB utilization is selected as the target beam; or, in the case of downlink overload, among the candidate beams whose RSRP is higher than the beam switching RSRP threshold, the beam with the lowest downlink PRB utilization is selected as the target beam.

[0144] It should be noted that, in this embodiment, for the case of uplink overload, the candidate beams are selected from low to high according to the uplink PRB utilization rate, and it is also considered that the RSRP of the selected beam is higher than the RSRP threshold of beam switching; for the case of downlink overload, the candidate beams are selected from low to high according to the downlink PRB utilization rate, and it is also considered that the RSRP of the selected beam is higher than the RSRP threshold of beam switching;

[0145] In the case where both the uplink and downlink directions are overloaded, determine the direction with high PRB utilization in the two overloaded directions, and select the beam with PRB utilization that meets the conditions in the determined direction as the target beam from the candidate beams whose RSRP is higher than the beam switching RSRP threshold.

[0146] For example: the first uplink high load threshold and the first downlink high load threshold are both 70%, the uplink PRB utilization of a certain SSB beam is 72%, and the downlink PRB utilization of the SSB beam is 75%. Then, from the candidate beams whose RSRP is higher than the beam switching RSRP threshold, select the beam with the lowest downlink PRB utilization as the target beam.

[0147] That is to say, when selecting a beam, not only the PRB utilization rate but also the RSRP threshold of beam switching should be considered. The beam that satisfies both conditions is the target beam. Therefore, the PRB utilization rate of the target beam may not be the beam with the lowest PRB utilization rate among the candidate beams.

[0148] S280. Switch the user equipment to be switched in the overloaded cell from the first SSB beam to the target beam.

[0149] Specifically, in this embodiment, S270 is: in the case where some beams in the overloaded cell are overloaded, determine whether there is a target beam in the overloaded cell according to the uplink PRB utilization rate, downlink PRB utilization rate of the first SSB beam, and the reference signal received power RSRP corresponding to all SSB beams of the overloaded cell.

[0150] Among them, the situation where some beams in the overloaded cell are overloaded includes: the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, the first SSB beam is any overloaded SSB beam among the partially overloaded beams, and the user equipment on the first SSB beam is a user equipment to be switched.

[0151] That is to say, for each overloaded SSB beam, priority is given to whether there is a suitable beam to switch to. If not, cell switching is performed.

[0152] Specifically, before performing cell switching, the target cell is selected from the candidate cells in the following situations:

[0153] In the case of uplink overload, that is, the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, a cell whose uplink average total PRB utilization meets the conditions is selected from the candidate neighboring cells as the target cell, that is, the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization. For example, the cell with the smallest uplink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0154] In case of downlink overload, that is, the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, a cell whose downlink average total PRB utilization meets the conditions is selected from the candidate neighboring cells as the target cell, that is, the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization. For example, the cell with the smallest downlink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0155] In the case where both the uplink and downlink directions are overloaded, the direction with high PRB utilization in the overload direction is determined, and the cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell, that is, the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and the downlink PRB utilization exceeds the first downlink high load threshold. If the uplink overload is higher than the downlink overload, that is, the uplink average PRB utilization of the first SSB beam is greater than the downlink average PRB utilization of the first SSB beam, then the candidate neighboring cells are selected from low to high according to the uplink average total PRB utilization, for example, the cell with the smallest uplink average total PRB utilization can be selected from the candidate neighboring cells as the target cell; otherwise, the candidate neighboring cells are selected from low to high according to the downlink average total PRB utilization, for example, the cell with the smallest downlink average total PRB utilization can be selected from the candidate neighboring cells as the target cell.

[0156] For the situation where all beams in the overloaded cell are overloaded, specifically including: the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold, and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold. At this time, it is determined that there is no target beam in the overloaded cell, and therefore, the load balancing method is cell switching.

[0157] Alternatively, the uplink PRB utilization of all SSB beams in the overloaded cell exceeds the first uplink high load threshold, and the downlink PRB utilization of all SSB beams in the overloaded cell exceeds the first downlink high load threshold. At this time, it is determined that there is no target beam in the overloaded cell, and the load balancing method is determined to be cell switching.

[0158] Specifically, when all beams in the overloaded cell are overloaded, the selection of the target cell from the candidate cells during cell switching can be referred to the relevant description in the above S250, which will not be repeated here for the sake of brevity.

[0159] The following is combined with Figure 3-5 , the specific implementation process of S270 when the current overloaded cell uses a narrow beam is described in detail.

[0160] like Figure 3 and 4 As shown, S270 may include:

[0161] S271. Send periodic measurement information to the user equipment on the first SSB beam (i.e., the user equipment to be switched), wherein the periodic measurement information is used to instruct the user equipment to report all SSB indexes and corresponding RSRPs of the overloaded cell.

[0162] S272. Receive measurement information reported by the user equipment, where the measurement information carries all SSB indexes and corresponding RSRPs.

[0163] S273, determine whether the uplink PRB utilization rate of the first SSB beam exceeds the first uplink high load threshold, if it exceeds, execute S274a, such as Figure 3 If it does not exceed, execute S274b, such as Figure 4 The first uplink high load threshold is the uplink high load threshold corresponding to SSB (UlHighOverLoadTotalPrbThPerSsb).

[0164] S274a, determine whether the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, if not, execute S275a, such as Figure 3 As shown, the first downlink high load threshold is the downlink high load threshold corresponding to SSB (DlHighOverLoadTotalPrbThPerSsb).

[0165] S275a: Whether there is a beam in the candidate beams that meets the RSRP threshold requirement for beam switching; if so, determine that there is a target beam in the overloaded cell; if not, determine that there is no target beam in the candidate beams.

[0166] S274b, determine whether the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, if not, execute S275b, such as Figure 4 shown.

[0167] S275b. Whether there is a beam in the candidate beams that meets the RSRP threshold requirement for beam switching, if so, it is determined that there is a target beam in the overloaded cell; if not, it is determined that there is no target beam in the overloaded cell.

[0168] That is to say, the situations in which there is no target beam in the overloaded cell are: the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and there is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching; or, when the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, there is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching; or, the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, there is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching.

[0169] The situations where a target beam exists in an overloaded cell include: when the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, there is a beam that meets the preset conditions among the candidate beams; or, when the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, there is a beam that meets the preset conditions among the candidate beams.

[0170] Among them, the candidate beams that meet the preset conditions include:

[0171] In the case of uplink overload (uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold), there are beams in the candidate beams whose uplink PRB utilization is low and whose RSRP is higher than the RSRP threshold for beam switching. If there are multiple beams whose RSRP is higher than the RSRP threshold for beam switching, the beam with the lowest uplink PRB utilization is selected as the target beam.

[0172] In the case of downlink overload (the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold), there are beams in the candidate beams whose downlink PRB utilization is low and whose RSRP is higher than the RSRP threshold for beam switching. If there are multiple beams whose RSRP is higher than the RSRP threshold for beam switching, the beam with the lowest downlink PRB utilization is selected as the target beam.

[0173] like Figure 5 As shown, S270 may include:

[0174] S271. Send periodic measurement information to the user equipment on the first SSB beam, wherein the periodic measurement information is used to instruct the user equipment to report all SSB indexes and corresponding RSRPs of the overloaded cell.

[0175] S272. Receive measurement information reported by the user equipment, where the measurement information carries all SSB indexes and corresponding RSRPs.

[0176] S276. Determine whether the uplink PRB utilization of all SSB beams in the overloaded cell exceeds the first uplink high load threshold. If so, execute S277.

[0177] S277. Determine whether the downlink PRB utilization rates of all SSB beams in the overloaded cell exceed the first downlink high load threshold. If so, determine that there is no target beam in the overloaded cell.

[0178] That is to say, there is another situation in which there is no target beam in the overloaded cell: all beams in the overloaded cell are overloaded, that is, the uplink PRB utilization of all SSB beams in the overloaded cell exceeds the first uplink high load threshold, and the downlink PRB utilization of all SSB beams in the overloaded cell exceeds the first downlink high load threshold; or, the uplink average total PRB utilization of SSB exceeds the second uplink high load threshold, and the downlink average total downlink PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold.

[0179] It should be understood that the technical solution of the embodiment of the present application does not limit the order of judging the uplink and downlink. Figure 3-5 The contents shown in are only some examples of the embodiments of the present application and do not constitute any limitation on the technical solution of the present application.

[0180] In some embodiments, if in the process of performing cell selection in the above S240 or S250, it is found that the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate or downlink average total PRB utilization rate, it is necessary to calculate the weight of the corresponding candidate cell according to the cell parameters and corresponding weights of each candidate cell, and then select the cell with the weight satisfying the condition from the multiple candidate cells as the target cell. That is, the multiple candidate cells are selected from the highest to the lowest weights to obtain the target cell, for example, the cell with the highest weight is selected from the multiple candidate cells as the target cell.

[0181] Among them, the cell parameters include: the average total PRB utilization of the uplink SSB beam, the average total PRB utilization of the downlink SSB beam, the RSRP corresponding to the cell, the number of user equipment connected to the cell, and at least one of the cell types, wherein the cell type includes: a cell within a base station or a cell between base stations.

[0182] It should be noted that in this embodiment, if the uplink is overloaded, the cell parameters include: the uplink average total PRB utilization of the SSB beam, the RSRP corresponding to the cell, the number of user devices connected to the cell, and the cell type, where the cell type is an intra-base station cell or an inter-base station cell, depending on the relationship between the candidate cell and the overloaded cell. If the candidate cell and the overloaded cell belong to cells covered by the same base station, the cell type is an intra-base station cell; if the candidate cell and the overloaded cell belong to cells covered by different base stations, the cell type is an inter-base station cell.

[0183] Assumptions: The weight corresponding to the average total PRB utilization rate in the uplink is V1, the weight corresponding to RSRP is V2, the weight corresponding to the number of user equipment connected to the cell is V3, the weight corresponding to the cell type is V4, the weight corresponding to the average total PRB utilization rate in the downlink is V5, and V1>V3>V2>V4, V5>V3>V2>V4.

[0184] In the case of uplink overload, the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization, and the weight of the candidate cell ω = ((1-P1)*V1+Q*V2-(m / N)*V3+n*V4).

[0185] In the case of downlink overload, the candidate neighboring cells include multiple candidate cells with the same average total downlink PRB utilization, and the weight of the candidate cell ω = ((1-P2)*V5+Q*V2-(m / N)*V3+n*V4).

[0186] The total number of supported user equipment is the maximum number of user equipment that can be accessed by any cell, for example, the number of user equipment in the target cell can be 3600. P1 is the average total PRB utilization rate for uplink, P2 is the average total PRB utilization rate for downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of supported user equipment in the cell, and n is the value assigned to the cell type. When the cell type is an intra-station cell, n is 1, and when the cell type is an intra-station cell, n is 0.

[0187] The following takes the uplink overload situation as an example to describe the weight calculation and target cell selection process in detail.

[0188] For example, the weights of the candidate cells may be calculated according to the ratios shown in Table 1 below.

[0189] Table 1

[0190] Cell parameters Weight value Total PRB utilization of uplink and downlink 70 Reported RSRP 10 Number of connected user devices 15 Cell Type 5

[0191] Multiple candidate cells with the same uplink average total PRB utilization are shown in Table 2 below:

[0192] Table 2

[0193]

[0194] The weight of candidate cell A = ((1-80%)*70%+70%*10%-(2000 / 3600)*15%+1*5%) = 0.177

[0195] The weight of candidate cell B = ((1-80%)*70%+75%*10%-(1800 / 3600)*15%+1*5%) = 0.145

[0196] The weight of candidate cell C = ((1-80%)*70%+70%*10%-(1500 / 3600)*15%+0*5%) = 0.157

[0197] The weight of candidate cell D = ((1-80%)*70%+80%*10%-(1600 / 3600)*15%+1*5%) = 0.153

[0198] The weight of candidate cell E = ((1-80%)*70%+90%*10%-(2400 / 3600)*15%+1*5%) = 0.135

[0199] The weight of candidate cell F = ((1-80%)*70%+85%*10%-(1200 / 3600)*15%+0*5%) = 0.15

[0200] By calculating the weight of each candidate cell and arranging the candidate cells from high to low according to the weight, candidate cell A is preferentially selected as the target cell.

[0201] Since there are cells using wide beams among the candidate cells, the cells using wide beams may be preferentially selected for weight calculation and the target cell may be selected therefrom.

[0202] It should be noted that the data in the above Table 2 are only examples and do not constitute any limitation to the technical solutions of the embodiments of the present application.

[0203] In some embodiments, whether a cell is overloaded may be determined based on the beam type used by the cell. The specific determination process is as follows:

[0204] For a cell using a wide beam, when the uplink average total PRB utilization of the SSB beam in the cell using the wide beam exceeds the second uplink high load threshold, and / or the downlink average total PRB utilization exceeds the second downlink high load threshold, it is determined that the cell using the wide beam is overloaded;

[0205] For a cell using a narrow beam, when the uplink PRB utilization of at least one SSB beam in the cell using a narrow beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of at least one SSB beam exceeds the first downlink high load threshold, the cell using a narrow beam is determined to be overloaded.

[0206] Among them, the second uplink high load threshold is the uplink high load threshold (UlHighOverLoadTotalPrbTh) corresponding to the cell; the second downlink high load threshold is the downlink high load threshold (DlHighOverLoadTotalPrbTh) corresponding to the cell.

[0207] That is to say, for a cell using a wide beam, it is necessary to determine whether the cell is an overloaded cell based on the uplink average total PRB utilization of the cell's SSB beam and / or whether the downlink average total PRB utilization of the cell's SSB beam exceeds the corresponding high load threshold.

[0208] For cells using narrow beams, whether the cell is an overloaded cell is determined based on the uplink PRB utilization of at least one SSB beam of the cell and / or whether the downlink PRB utilization of at least one SSB beam of the cell exceeds the corresponding high load threshold.

[0209] For cells using narrow beams, if some beams are overloaded, beam switching is performed first for each overloaded beam, and cell switching is performed when there is no suitable beam; if all beams are overloaded, cell switching is performed. Wherein, all beams are overloaded may include: the uplink PRB utilization rate and downlink PRB utilization rate of each SSB beam exceed the corresponding first high load threshold, or the uplink average total PRB utilization rate and downlink average total PRB utilization rate of each SSB beam exceed the corresponding second high load threshold.

[0210] It should be noted that the various thresholds mentioned above can be configured, and the unit of each threshold can be set to a percentage.

[0211] The load balancing method provided in the above embodiments provides an optimization strategy for beam and cell selection when performing load balancing for cells with wide and narrow beams. The best cell can be selected by taking into account several factors such as PRB utilization, measured and reported RSRP, number of activated user equipment, and intra-station and inter-station by weight.

[0212] The load balancing method provided in the above embodiments makes full use of the multi-beam characteristics of the 5G system and adds a beam switching decision strategy. Compared with the existing solution, a weighted approach is used to comprehensively consider multiple factors, and a relatively better cell can be selected when performing load balancing.

[0213] Combined with the above Figure 1-5 The technical solution of a load balancing method provided by the embodiment of the present application is described below. Figure 6 and 7 , describes in detail a network side device provided in an embodiment of the present application.

[0214] Based on the same inventive concept, the embodiment of the present application also provides a network side device, such as Figure 6 As shown, the network side device includes: a memory 301, a transceiver 3502 and a processor 303, wherein:

[0215] Memory 301, used for storing computer programs;

[0216] The transceiver 302 is used to send and receive data under the control of the processor 303;

[0217] The processor 303 is configured to read the computer program in the memory 301 and perform the following operations:

[0218] Determine the load balancing method based on the type of beam used by the overloaded cell;

[0219] According to the determined load balancing method, load balancing is performed on the overloaded cells.

[0220] In one embodiment, the processor 303 is specifically configured to, when the type of beam used by the overloaded cell is a wide beam, determine that the load balancing method is cell switching.

[0221] In another embodiment, the processor 303 is specifically configured to, when the type of beam used by the overloaded cell is a narrow beam, for a situation where some beams in the overloaded cell are overloaded,

[0222] If the target beam exists in the overloaded cell, the load balancing mode is determined to be beam switching;

[0223] If the target beam does not exist in the overloaded cell, the load balancing method is determined to be cell switching.

[0224] Among them, the target beam is a beam determined among the candidate beams, and the candidate beam is a beam in an overloaded cell, in which the uplink physical resource block PRB utilization and / or downlink PRB utilization of the synchronization signal block SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

[0225] Specifically, in this embodiment, the situation where some beams in the overloaded cell are overloaded includes: the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, wherein the first SSB beam is any overloaded SSB beam in the partially overloaded beams, and the user equipment on the first SSB beam is the user equipment to be switched; the processor 303 is also used to determine whether there is a target beam in the overloaded cell based on the uplink PRB utilization, the downlink PRB utilization of the first SSB beam, and the reference signal received power RSRP corresponding to all SSB beams of the overloaded cell.

[0226] Specifically, when the uplink PRB utilization rate of the first SSB beam exceeds the first uplink high load threshold, the beam with the lowest uplink PRB utilization rate is selected as the target beam from the beams whose RSRP in the candidate beams is higher than the RSRP threshold of beam switching; or,

[0227] When the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, the beam with the lowest downlink PRB utilization rate is selected as the target beam from the candidate beams whose beam RSRP is higher than the RSRP threshold of beam switching;

[0228] When the uplink PRB utilization rate of the beam where the first SSB beam is located exceeds the first uplink high load threshold, and / or the downlink PRB utilization rate of the beam where the first SSB beam is located exceeds the first downlink high load threshold, there is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching, and it is determined that there is no target beam in the overloaded cell.

[0229] In another embodiment, the transceiver 302 is used to send periodic measurement information to the user equipment to be switched, where the periodic measurement information is used to instruct the user equipment to be switched to report all SSB indexes and corresponding RSRPs of the overloaded cell;

[0230] Receive measurement information reported by the user equipment to be switched, where the measurement information carries all SSB indexes and corresponding RSRPs.

[0231] In another embodiment, the processor 303 is specifically configured to switch the user equipment to be switched in the overloaded cell from the first SSB beam to the target beam.

[0232] In another embodiment, in response to the situation where all beams in an overloaded cell are overloaded, the processor 303 is also used to determine that the load balancing method is cell switching when the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold.

[0233] Alternatively, when the uplink PRB utilization of all SSB beams in the overloaded cell exceeds the first uplink high load threshold, and the downlink PRB utilization of all SSB beams in the overloaded cell exceeds the first downlink high load threshold, the load balancing method is determined to be cell switching.

[0234] In another embodiment, the processor 303 is specifically configured to switch the user equipment to be switched in the overloaded cell from the overloaded cell to the target cell, wherein the target cell is not overloaded.

[0235] In another embodiment, the processor 303 is further used to determine a candidate neighboring cell from the neighboring cells of the overloaded cell, wherein the candidate neighboring cell is an uplink average total PRB utilization rate of the SSB beam in the neighboring cell, and / or, a downlink average total PRB utilization rate of the SSB beam, which is lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold. At least one cell; and determining the target cell from the candidate neighboring cells in the following manner,

[0236] In case that the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization rate meets the conditions is selected from the candidate neighboring cells as the target cell;

[0237] In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization rate meets the conditions is selected from the candidate neighboring cells as the target cell;

[0238] For the case where the overloaded cell is overloaded in both the uplink and downlink directions, the direction with high PRB utilization in the overload direction is determined, and a cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell.

[0239] Specifically, in this embodiment, when the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate or downlink average total PRB utilization rate, the processor 303 is specifically used to calculate the weight of the corresponding candidate cell according to the cell parameters and corresponding weights of each candidate cell, wherein the cell parameters include: the uplink average total PRB utilization rate of the SSB beam, the downlink average total PRB utilization rate of the SSB beam, the RSRP corresponding to the cell, the number of user equipment connected to the cell, and at least one of the cell types, wherein the cell types include: a cell within a base station or a cell between base stations;

[0240] A cell with a weight that meets the conditions is selected from multiple candidate cells as a target cell. That is, multiple candidate cells are selected from high to low according to the weights to obtain the target cell.

[0241] Specifically, in this embodiment, the processor 303 is specifically configured to, when the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate, calculate the weight ω of each candidate cell using the following formula:

[0242] ω=((1-P1)*V1+Q*V2-(m / N)*V3+n*V4);

[0243] When the candidate neighboring cells include multiple candidate cells with the same average total downlink PRB utilization, the weight ω of each candidate cell is calculated using the following formula:

[0244] ω=((1-P2)*V5+Q*V2-(m / N)*V3+n*V4);

[0245] Wherein, P1 is the average total PRB utilization rate of uplink, P2 is the average total PRB utilization rate of downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of user equipment supported by the cell, and n is the value assigned to the cell type. When the cell type is an intra-site cell, n is 1, and when the cell type is an intra-site cell, n is 0;

[0246] V1 is the weight corresponding to the average total PRB utilization rate of the uplink, V2 is the weight of the RSRP corresponding to the cell, V3 is the weight corresponding to the number of user equipment connected to the cell, V4 is the weight corresponding to the cell type, and V5 is the weight corresponding to the average total PRB utilization rate of the downlink, and V1>V3>V2>V4, V5>V3>V2>V4.

[0247] In some embodiments, the processor 303 is specifically used to determine the cells using wide beams in the candidate neighboring cells according to a preset neighboring cell relationship; and determine the target cell from the cells using wide beams in the candidate neighboring cells, wherein the preset neighboring cell relationship includes information on the type of beams used by each cell.

[0248] In another embodiment, the processor 303 is further used to determine that the cell using the wide beam is overloaded when the uplink average total PRB utilization of the SSB beam in the cell using the wide beam exceeds a second uplink high load threshold and / or the downlink average total PRB utilization of the SSB beam exceeds a second downlink high load threshold.

[0249] In another embodiment, the processor 303 is further used to determine that the cell using the narrow beam is overloaded when the uplink PRB utilization of at least one SSB beam in the cell using the narrow beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of at least one SSB beam exceeds the first downlink high load threshold.

[0250] For contents not described in detail in the network side device provided in the embodiment of the present application, reference can be made to the load balancing method provided in the above embodiment. The beneficial effects that can be achieved by the network side device provided in the embodiment of the present application are the same as those of the load balancing method provided in the above embodiment, and will not be repeated here.

[0251] It should be understood that in the above embodiments, Figure 6The bus architecture in can include any number of interconnected buses and bridges, specifically one or more processors represented by processor 303 and various circuits of memory represented by memory 301 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, regulators, and power management circuits, which are all well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 302 can be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 303 is responsible for managing the bus architecture and general processing, and the memory 301 can store data used by the processor 303 when performing operations.

[0252] The processor 303 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0253] Based on the same inventive concept, the embodiment of the present application also provides a network side device, such as Figure 7 As shown, the network side device may include: a determining unit 410 and an executing unit 420.

[0254] The determination unit 410 is configured to determine a load balancing method according to the type of beam used by the overloaded cell;

[0255] The execution unit 420 is used to perform load balancing on the overloaded cells according to the determined load balancing mode.

[0256] In one embodiment, the determining unit 410 is specifically configured to, when the type of beam used by the overloaded cell is a wide beam, determine that the load balancing method is cell switching;

[0257] The execution unit 420 is specifically configured to switch the user equipment to be switched in the overloaded cell from the overloaded cell to the target cell, wherein the target cell is not overloaded.

[0258] In another embodiment, the determination unit 410 is specifically used to, when the type of beam used in the overloaded cell is a narrow beam, determine the load balancing method according to whether there is a target beam in the overloaded cell in response to the situation that some beams in the overloaded cell are overloaded. Specifically, if there is a target beam in the overloaded cell, the load balancing method is determined to be beam switching; if there is no target beam in the overloaded cell, the load balancing method is determined to be cell switching.

[0259] Among them, the target beam is a beam determined among the candidate beams, and the candidate beam is a beam in an overloaded cell, in which the uplink physical resource block PRB utilization rate and / or the downlink physical resource block PRB utilization rate of the synchronization signal block SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

[0260] Specifically, in this embodiment, the situation where some beams in the overloaded cell are overloaded includes: the uplink PRB utilization of the first SSB beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of the first SSB beam exceeds the first downlink high load threshold, the first SSB beam is the SSB of any overloaded beam in the partially overloaded beams, and the user equipment on the first SSB beam is the user equipment to be switched; the determination unit 410 is also used to determine whether there is a target beam in the overloaded cell based on the uplink physical resource block PRB utilization, the downlink physical resource block PRB utilization of the first SSB beam, and the reference signal received power RSRP corresponding to all SSB beams of the overloaded cell.

[0261] Specifically, when the uplink PRB utilization rate of the first SSB beam exceeds the first uplink high load threshold, the beam with the lowest uplink PRB utilization rate is selected as the target beam from the beams whose RSRP in the candidate beams is higher than the RSRP threshold of beam switching; or,

[0262] When the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, the beam with the lowest downlink PRB utilization rate is selected as the target beam from the candidate beams whose beam RSRP is higher than the RSRP threshold of beam switching;

[0263] When the uplink PRB utilization rate of the beam where the first SSB beam is located exceeds the first uplink high load threshold, and / or the downlink PRB utilization rate of the beam where the first SSB beam is located exceeds the first downlink high load threshold, there is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching, and it is determined that there is no target beam in the overloaded cell.

[0264] In another embodiment, it further includes: a sending unit 430 and a receiving unit 440, wherein:

[0265] A sending unit 430 is used to send periodic measurement information to the user equipment to be switched, where the periodic measurement information is used to instruct the user equipment to be switched to report all SSB indexes and corresponding RSRPs of the overloaded cell;

[0266] The receiving unit 440 is used to receive measurement information reported by the user equipment to be switched, where the measurement information carries all SSB indexes and corresponding RSRPs.

[0267] In another embodiment, the determination unit 410 is specifically used to determine that the load balancing method is beam switching when a target beam exists in an overloaded cell; the execution unit 420 is specifically used to switch the user equipment to be switched in the overloaded cell from the first SSB beam to the target beam.

[0268] In another embodiment, the determination unit 410 is also used to, in response to the situation where all beams in the overloaded cell are overloaded, determine that the load balancing method is cell switching when the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold, and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold.

[0269] Alternatively, when the uplink PRB utilization of all SSB beams in the overloaded cell exceeds the first uplink high load threshold, and the downlink PRB utilization of all SSB beams in the overloaded cell exceeds the first downlink high load threshold, the load balancing method is determined to be cell switching.

[0270] In another embodiment, the execution unit 420 is specifically configured to switch the user equipment to be switched in the overloaded cell from the overloaded cell to the target cell, wherein the target cell is not overloaded.

[0271] In another embodiment, the determination unit 410 is further used to determine a candidate neighboring cell from the neighboring cells of the overloaded cell, wherein the candidate neighboring cell is at least one cell whose uplink average total PRB utilization of the SSB beam in the neighboring cell and / or the downlink average total PRB utilization of the SSB beam is lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold; and determine the target cell from the candidate neighboring cells in the following manner,

[0272] In case that the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization rate meets the conditions is selected from the candidate neighboring cells as the target cell;

[0273] In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization rate meets the conditions is selected from the candidate neighboring cells as the target cell;

[0274] For the case where the overloaded cell is overloaded in both the uplink and downlink directions, the direction with high PRB utilization in the overload direction is determined, and a cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell.

[0275] Specifically, in this embodiment, when the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate or downlink average total PRB utilization rate, the determination unit 410 is specifically used to calculate the weight of the corresponding candidate cell according to the cell parameters and corresponding weights of each candidate cell, wherein the cell parameters include: the uplink average total PRB utilization rate of the SSB beam, the downlink average total PRB utilization rate of the SSB beam, the RSRP corresponding to the cell, the number of user equipment connected to the cell, and at least one of the cell types, wherein the cell types include: a cell within a base station or a cell between base stations;

[0276] A cell with a weight that meets the conditions is selected from multiple candidate cells as a target cell. That is, multiple candidate cells are selected from high to low according to the weights to obtain the target cell.

[0277] Specifically, in this embodiment, the processor 303 is specifically configured to, when the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate, calculate the weight ω of each candidate cell using the following formula:

[0278] ω=((1-P1)*V1+Q*V2-(m / N)*V3+n*V4);

[0279] When the candidate neighboring cells include multiple candidate cells with the same average total downlink PRB utilization, the weight ω of each candidate cell is calculated using the following formula:

[0280] ω=((1-P2)*V5+Q*V2-(m / N)*V3+n*V4);

[0281] Wherein, P1 is the average total PRB utilization rate of uplink, P2 is the average total PRB utilization rate of downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of user equipment supported by the cell, and n is the value assigned to the cell type. When the cell type is an intra-site cell, n is 1, and when the cell type is an intra-site cell, n is 0;

[0282] V1 is the weight corresponding to the average total PRB utilization rate of the uplink, V2 is the weight of the RSRP corresponding to the cell, V3 is the weight corresponding to the number of user equipment connected to the cell, V4 is the weight corresponding to the cell type, and V5 is the weight corresponding to the average total PRB utilization rate of the downlink, and V1>V3>V2>V4, V5>V3>V2>V4.

[0283] In some embodiments, the determination unit 410 is specifically used to determine the cells using wide beams in the candidate neighboring cells according to a preset neighboring cell relationship; and determine the target cell from the cells using wide beams in the candidate neighboring cells, wherein the preset neighboring cell relationship includes information on the type of beams used by each cell.

[0284] In another embodiment, the determination unit 410 is also used to determine that the cell using the wide beam is overloaded when the uplink average total PRB utilization of the SSB beam in the cell using the wide beam exceeds the second uplink high load threshold, and / or the downlink average total PRB utilization of the SSB beam exceeds the second downlink high load threshold.

[0285] In another embodiment, the determination unit 410 is also used to determine that the cell using the narrow beam is overloaded when the uplink PRB utilization of at least one SSB beam in the cell using the narrow beam exceeds the first uplink high load threshold, and / or the downlink PRB utilization of at least one SSB beam exceeds the first downlink high load threshold.

[0286] For contents not described in detail in the network side device provided in the embodiment of the present application, reference can be made to the load balancing method provided in the above embodiment. The beneficial effects that can be achieved by the network side device provided in the embodiment of the present application are the same as those of the load balancing method provided in the above embodiment, and will not be repeated here.

[0287] In addition, the embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is run on a computer, the computer can execute the corresponding content of the embodiment corresponding to the aforementioned load balancing method. Compared with the prior art, the load balancing method provided in the embodiment of the present application provides an optimization strategy for load balancing based on the characteristics of multiple beams of 5G networks. The load balancing method is determined based on the beam type of the overloaded cell, which can make the load balancing result better.

[0288] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0289] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program code.

[0290] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0291] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0292] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0293] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0294] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A load balancing method, It is characterized in that include: Determine the load balancing method based on the type of beam used by the overloaded cell; Performing load balancing on the overloaded cell according to the determined load balancing method; The step of determining the load balancing method according to the type of beam used by the overloaded cell includes: When the type of beam used by the overloaded cell is a narrow beam, in response to the situation where some beams in the overloaded cell are overloaded, If there is a target beam in the overloaded cell, determining that the load balancing mode is beam switching; If the target beam does not exist in the overloaded cell, determining that the load balancing mode is cell switching; Among them, the target beam is a beam determined from candidate beams, and the candidate beam is a beam in the overloaded cell, in which the uplink physical resource block PRB utilization and / or downlink PRB utilization of the synchronization signal block SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

2. The method according to claim 1, It is characterized in that Also includes: When the uplink average total PRB utilization of the SSB beam in the cell using the wide beam exceeds the second uplink high load threshold, and / or the downlink average total PRB utilization of the SSB beam exceeds the second downlink high load threshold, the cell using the wide beam is determined to be overloaded.

3. The method according to claim 1, It is characterized in that Also includes: When the uplink PRB utilization of at least one SSB beam in a cell using a narrow beam exceeds a first uplink high load threshold, and / or the downlink PRB utilization of at least one SSB beam exceeds a first downlink high load threshold, the cell using a narrow beam is determined to be overloaded.

4. The method according to claim 1, It is characterized in that The determining of the load balancing method according to the type of beam used by the overloaded cell further includes: When the type of beam used by the overloaded cell is a wide beam, the load balancing mode is determined to be cell switching.

5. The method according to claim 1, It is characterized in that The situation that some beams in the overloaded cell are overloaded includes: an uplink PRB utilization rate of the first SSB beam exceeds a first uplink high load threshold, and / or a downlink PRB utilization rate of the first SSB beam exceeds a first downlink high load threshold, the first SSB beam is any overloaded SSB beam in the partially overloaded beams, and the user equipment on the first SSB beam is a user equipment to be switched; The method further comprises: When the uplink PRB utilization rate of the first SSB beam exceeds the first uplink high load threshold, among the candidate beams whose beam RSRP is higher than the beam switching RSRP threshold, select the beam with the lowest uplink PRB utilization rate as the target beam; or, When the downlink PRB utilization rate of the first SSB beam exceeds the first downlink high load threshold, among the beams whose RSRP in the candidate beams is higher than the beam switching RSRP threshold, select the beam with the lowest downlink PRB utilization rate as the target beam; There is no beam in the candidate beams whose RSRP is higher than the RSRP threshold for beam switching, and it is determined that there is no target beam in the overloaded cell.

6. The method according to claim 5, It is characterized in that Also includes: Sending periodic measurement information to the user equipment to be switched, where the periodic measurement information is used to instruct the user equipment to be switched to report all SSB indexes and corresponding RSRPs of the overloaded cell; Receive measurement information reported by the user equipment to be switched, where the measurement information carries all SSB indexes and corresponding RSRPs.

7. The method according to claim 5 or 6, It is characterized in that The step of performing load balancing on the overloaded cell according to the determined load balancing mode includes: The user equipment to be switched in the overloaded cell is switched from the first SSB beam to the target beam.

8. The method according to claim 1, It is characterized in that Also includes: When the uplink PRB utilization rates of all SSB beams in the overloaded cell exceed the first uplink high load threshold, and the downlink PRB utilization rates of all SSB beams in the overloaded cell exceed the first downlink high load threshold, determining that the load balancing mode is cell switching; or, When the uplink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second uplink high load threshold, and the downlink average total PRB utilization of all SSB beams in the overloaded cell exceeds the second downlink high load threshold, the load balancing mode is determined to be cell switching.

9. The method according to any one of claims 1, 4 and 8, It is characterized in that The step of performing load balancing on the overloaded cell according to the determined load balancing mode includes: The user equipment to be switched in the overloaded cell is switched from the overloaded cell to a target cell, wherein the target cell is not overloaded.

10. The method according to claim 9, It is characterized in that The determination of the target cell includes: Determine a candidate neighboring cell from the neighboring cells of the overloaded cell, wherein the candidate neighboring cell is at least one cell whose uplink average total PRB utilization rate of the SSB beam and / or the downlink average total PRB utilization rate of the SSB beam in the neighboring cell is lower than the second uplink high load warning threshold and lower than the second downlink high load warning threshold; Determine the target cell from the candidate neighboring cells in the following manner: In the case where the overloaded cell is overloaded in the uplink direction, a cell whose uplink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell; In the case where the overloaded cell is overloaded in the downlink direction, a cell whose downlink average total PRB utilization rate meets the condition is selected from the candidate neighboring cells as the target cell; In view of the situation that the overloaded cell is overloaded in both the uplink and downlink directions, the direction with high PRB utilization in the overload direction is determined, and a cell whose average total PRB utilization meets the conditions in the determined direction is selected from the candidate neighboring cells as the target cell.

11. The method according to claim 10, It is characterized in that The determination of the target cell includes: Determine, according to a preset neighboring cell relationship, a cell using a wide beam in the candidate neighboring cells; The target cell is determined from cells using wide beams among the candidate neighboring cells, wherein the preset neighboring cell relationship includes type information of beams used by each cell.

12. The method according to claim 10 or 11, It is characterized in that Performing cell selection on the candidate neighboring cell to obtain the target cell includes: When the candidate neighboring cells include multiple candidate cells with the same uplink average total PRB utilization rate, the weight ω of each candidate cell is calculated using the following formula: ； When the candidate neighboring cells include multiple candidate cells with the same downlink average total PRB utilization rate, the weight of each candidate cell is calculated using the following formula: ； Wherein, P1 is the average total PRB utilization rate of uplink, P2 is the average total PRB utilization rate of downlink, Q is the RSRP ratio corresponding to the cell, m is the number of user equipment connected to the cell, N is the total number of user equipment supported by the cell, and n is the value assigned to the cell type. When the cell type is an intra-site cell, n is 1, and when the cell type is an intra-site cell, n is 0; V1 is the weight corresponding to the uplink average total PRB utilization, V2 is the weight corresponding to the RSRP of the cell, V3 is the weight corresponding to the number of user equipment connected to the cell, V4 is the weight corresponding to the cell type, V5 is the weight corresponding to the downlink average total PRB utilization, and V1> V3> V2> V4, V5> V3> V2> V4; A cell whose weight satisfies a condition is selected from the multiple candidate cells as the target cell.

13. A network side device, It is characterized in that include: Memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; A processor, configured to read the computer program in the memory and execute the load balancing method according to any one of claims 1 to 12.

14. A network side device, It is characterized in that include: A determination unit, configured to determine a load balancing method according to a type of beam used by the overloaded cell; An execution unit, configured to perform load balancing on the overloaded cell according to the determined load balancing mode; The determining unit is specifically configured to: when the type of beam used by the overloaded cell is a narrow beam, for a situation where some beams in the overloaded cell are overloaded, If there is a target beam in the overloaded cell, determining that the load balancing mode is beam switching; If the target beam does not exist in the overloaded cell, determining that the load balancing mode is cell switching; Among them, the target beam is a beam determined from candidate beams, and the candidate beam is a beam in the overloaded cell, in which the uplink physical resource block PRB utilization and / or downlink PRB utilization of the synchronization signal block SSB beam is lower than the first uplink high load warning threshold and lower than the first downlink high load warning threshold.

15. A processor-readable storage medium, It is characterized in that The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the load balancing method according to any one of claims 1 to 12.

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