CN105916178A - Load balancing method and apparatus thereof - Google Patents

Abstract

The embodiment of the invention discloses a load balancing method and device, relates to the field of communication technology, and can improve the communication quality of terminals under the condition of ensuring load balancing. The method in the embodiment of the present invention includes: determining a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state; when the first cell When the cell includes at least two cells, determine a reference ratio value of each first cell, where the reference ratio value is used to represent the average signal-to-interference-plus-noise ratio SINR of all terminals in the cell; determine that the reference ratio value is greater than the second The first cell with the threshold value is the target cell; the target terminal in the primary cell is connected to the target cell. The invention is suitable for load balancing process.

Description

A method and device for load balancing

technical field

The present invention relates to the field of communication technology, in particular to a load balancing method and device.

Background technique

During the communication process, the terminal can select a PCell (English: Primary Cell, Chinese: primary cell) according to its own needs, which often leads to multiple eNBs (English: Evolved Node B, Chinese: evolved base station) There is uneven load among the cells. That is, there may be a large number of terminals in some cells, and because the resources in the cell are limited, it will cause network congestion and affect the communication quality of the terminals in the cell; while in other cells, due to the small number of terminals or the ongoing Too much resource redundancy due to the small number of services means that resources in these cells are not fully utilized, resulting in waste of spectrum resources.

In order to solve the problem of unbalanced load among cells, when the eNB detects that the load of a cell exceeds a preset threshold, it determines that the cell is overloaded, and starts a load balancing process. That is, by switching some terminals in a cell that is already in an overloaded state to a cell with a smaller load around it, the load balance among cells is achieved.

However, the implementation of load balancing in the above manner only takes into account the load status of each cell. That is to say, when a terminal is handed over from the source cell to the target cell, although the communication quality of other terminals in the source cell is guaranteed, the load of the target cell will often increase after the terminal accesses the target cell, which not only affects Even if the communication quality of each terminal in the target cell is reached, the communication quality of the terminal itself cannot be guaranteed at the same time.

Contents of the invention

Embodiments of the present invention provide a method and device for load balancing, which can improve communication quality of terminals while ensuring load balancing.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

In a first aspect, an embodiment of the present invention provides a load balancing method, the method comprising:

Determining a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state;

When the first cell includes at least two cells, determine a reference ratio value of each first cell, where the reference ratio value is used to represent an average signal-to-interference-plus-noise ratio SINR of all terminals in the cell;

determining that the first cell whose reference ratio value is greater than the second threshold is the target cell;

Accessing the target terminal in the primary cell to the target cell.

In a second aspect, an embodiment of the present invention provides a load balancing device, the device comprising:

A determining unit, configured to determine a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state;

The determining unit is further configured to determine a reference ratio value of each first cell when the first cell includes at least two cells, and the reference ratio value is used to represent an average signal-to-interference plus of all terminals in the cell noise ratio SINR;

The determining unit is further configured to determine that the first cell whose reference ratio value is greater than the second threshold is the target cell;

A switching unit, configured to connect the target terminal in the primary cell to the target cell determined by the determining unit.

The method and device for load balancing provided by the embodiments of the present invention determine the neighbor cell whose signal strength is greater than the first threshold in the overloaded cell as the first cell, and if the first cell includes at least two cells, the cell The first cell whose average SINR of all terminals in the cell is greater than the second threshold is determined as the target cell, and then the target terminal in the overloaded cell is handed over to the target cell for communication. Compared with the prior art, the load of the target cell is increased due to the handover of the terminal from the source cell to the target cell, thereby affecting the communication quality of each terminal in the target cell, and at the same time, it is impossible to guarantee the security of the terminal itself after accessing the target cell. Communication quality, the present invention screens the adjacent cells of the overloaded cell through the signal strength and the average SINR of all terminals in the cell, and uses the cell with better communication quality as the target cell, so that when the terminal switches from the source cell to the target cell, the Each terminal will not affect the communication quality due to the increase of the load of the target cell. At the same time, since the terminal accesses a cell with better communication quality for communication, the communication quality of the terminal itself can also be guaranteed. Therefore, the communication quality of the terminal can be improved while ensuring load balance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

FIG. 1 is a flow chart of a load balancing method provided by an embodiment of the present invention;

FIG. 2 is a flowchart of another load balancing method provided by an embodiment of the present invention;

FIG. 3 is a flow chart of another load balancing method provided by an embodiment of the present invention;

FIG. 4 is a flow chart of another load balancing method provided by an embodiment of the present invention;

FIG. 5 is a flowchart of another load balancing method provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a load balancing device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a method for load balancing. As shown in FIG. 1, the method can be executed by a base station, and the method flow includes:

101. Determine a first cell.

Wherein, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state.

The base station receives the measurement report reported by the terminal, wherein the measurement report includes the RSRP (English: Reference Signal Receiving Power, Chinese: Reference Signal Received Power) measurement results of the main cell where the target terminal is located and its neighboring cells, the resource occupancy rate of each cell, The number of terminals in each cell and the SINR (English: Signal to Interference plus Noise Ratio, Chinese: Signal to Interference plus Noise Ratio) of each terminal in the cell.

Each cell has a certain carrying capacity, if it exceeds this carrying capacity, it will be overloaded. To count and evaluate the load situation of each cell, the parameters that may affect the cell load may include at least one of the maximum number of terminals, available wireless resources, and hardware load indicators. The present invention can use the evaluation of the number of terminals to characterize the load situation of the cell.

According to the number of terminals in each cell in the measurement report, the load size of each cell can be determined, combined with the preset overload threshold, where the overload threshold is a fixed and adjustable threshold used to distinguish overloaded cells from non-overloaded cells. In the embodiment of the present invention, it may be determined that a cell whose number of terminals is greater than an overload threshold is an overloaded cell, and a cell whose number of terminals is less than or equal to the overload threshold is a non-overloaded cell. When the base station determines that the primary cell is an overloaded cell, it acquires a measurement report generated within a preset time, and obtains an RSRP of a neighboring cell of the primary cell where the target terminal is located. Wherein, the preset time refers to a period of time before the current time, and the current time refers to the time when the base station determines that the primary cell is overloaded. Considering that although the state of the cell will change with time, the state of two adjacent moments will not have a big difference. Therefore, the state of the cell for a period of time before the current moment can basically represent the current moment. status of the neighborhood. That is to say, the data collected during this period can reflect the state of the main cell at the current moment. If the RSRP of the neighboring cell is greater than the first threshold Th_1, it is determined that the neighboring cell is the first cell. It should be noted that the overload threshold and the preset time here may be constants preset by those skilled in the art based on historical experience or actual needs.

102. When the first cell includes at least two cells, determine a reference ratio value of each first cell.

Wherein, the reference ratio value is used to represent the average SINR of all terminals in the cell.

According to the formula Proportion_Ti=∑(SINRk_Ti)/Num_Ti, the reference ratio value of the i-th first cell is obtained through calculation.

Among them, SINRk_Ti is the SINR value reported by the k-th terminal in the i-th first cell at the current moment, both i and k are positive integers greater than 0, and Num_Ti is the number of terminals reported by each first cell within the preset time .

103. Determine that the first cell whose reference ratio value is greater than the second threshold is the target cell.

When the reference ratio value Proportion_Ti of the i-th first cell satisfies the formula Proportion_Ti≧Th_2, the first cell is determined to be the target cell. Wherein, Th_2 is the second threshold.

104. Connect the target terminal in the primary cell to the target cell.

After determining the target cell, the base station can send a reconfiguration RRC (English: RadioResource Control, Chinese: Radio Resource Control Protocol) Connection Reconfigration message to the target terminal to trigger the target terminal to initiate a handover action; Send the RRC Connection Reconfigration Complete message to inform the base station that the terminal has accessed the target cell; after receiving the RRC Connection ReconfigrationComplete message, the base station releases the resources occupied by the terminal in the source cell. Accessed primary cell.

In the load balancing method provided by the embodiment of the present invention, the neighbor cell whose signal strength is greater than the first threshold in the overloaded cell is determined as the first cell, and if the first cell includes at least two cells, all the cells in the cell are The first cell whose average SINR of the terminal is greater than the second threshold is determined as the target cell, and then the target terminal in the overloaded cell is handed over to the target cell for communication. Compared with the prior art, the load of the target cell is increased due to the handover of the terminal from the source cell to the target cell, thereby affecting the communication quality of each terminal in the target cell, and at the same time, it is impossible to guarantee the security of the terminal itself after accessing the target cell. Communication quality, the present invention screens the adjacent cells of the overloaded cell through the signal strength and the average SINR of all terminals in the cell, and uses the cell with better communication quality as the target cell, so that when the terminal switches from the source cell to the target cell, the Each terminal will not affect the communication quality due to the increase of the load of the target cell. At the same time, since the terminal accesses a cell with better communication quality for communication, the communication quality of the terminal itself can also be guaranteed. Therefore, the communication quality of the terminal can be improved while ensuring load balance.

In order to ensure that the terminal will not undergo large-scale network migration due to excessive changes in the network environment during the cell handover process, in an implementation of the embodiment of the present invention, the terminal can be handed over to a network with a communication quality similar to that of the primary cell. The cell communicates. Therefore, on the basis of the implementation shown in FIG. 1 , the implementation shown in FIG. 2 may also be implemented. Wherein, step 103 determines that the first cell whose reference ratio value is greater than the second threshold is the target cell, which can be specifically implemented as step 1031. When step 102 is executed when the first cell includes at least two cells, the reference of each first cell is determined. After the scale value, steps 105 to 107 can also be performed:

1031. When there is a second cell in the first cell, determine that the second cell is the target cell.

Wherein, the second cell is a cell whose reference ratio value is greater than a second threshold.

105. When there are at least two second cells in the first cell, determine a reference ratio value of the primary cell and a reference ratio value of the secondary cell of the target terminal.

According to the formula Proportion_P=∑(SINRk_P)/Num_P, the reference ratio value Proportion_P of the primary cell is obtained through calculation. Wherein, SINRk_P is the SINR value reported by the kth terminal in the primary cell at the current moment, and Num_P is the number of terminals reported by the primary cell within a preset time.

According to the formula Proportion_P_S=∑(SINRk_S)/Num_P_S, the reference proportion value of the secondary cell of the target terminal Proportion_P_S is obtained through calculation. Wherein, SINRk_S is the SINR value reported by the kth terminal in the secondary cell of the target terminal at the current moment, and Num_P_S is the number of terminals reported by the secondary cell of the target terminal within a preset time.

106. Determine an average value of the reference ratio value of the primary cell and the reference ratio value of each secondary cell of the target terminal.

107. Determine that the second cell whose first absolute value is smaller than the third threshold is the target cell.

Wherein, the first absolute value is the absolute value of the difference between the reference ratio value and the average value of the second cell.

When the reference ratio value Proportion_Ti of the i-th second cell satisfies the formula |Proportion_Ti-(Proportion_P+Proportion_P_S)/(m+1)|≤Th_3, the first cell is determined to be the target cell. Wherein, m is a positive integer less than or equal to 5, indicating the number of secondary cells of the target terminal, and Th_3 is the third threshold. Since in the LTE (English: Long Term Evolution, Chinese: Long Term Evolution) Rel-10 protocol, a terminal can aggregate up to 5 secondary carriers, therefore, m is a positive integer less than or equal to 5.

In a load balancing method provided by an embodiment of the present invention, a cell whose reference ratio value is greater than a second threshold is determined as a second cell, and if there is a second cell in the first cell, the second cell is determined to be a target cell, If there are at least two second cells in the first cell, it is determined that the cell whose difference between the reference ratio value and the average value is smaller than the third threshold is the target cell. Compared with the prior art, when the terminal is handed over from the source cell to the target cell, the load of the target cell increases, thereby affecting the communication quality of each terminal in the target cell, and the communication quality of the terminal itself cannot be guaranteed, the present invention Screen the second cell by the difference between the reference ratio value and the average value, and the terminal can be switched to a cell whose communication quality is similar to that of the primary cell for communication, so that the communication quality of the access cell will not be too great before and after the terminal switches cells Changes can avoid the decline in the communication quality of the access cell after the terminal switches cells, resulting in the terminal switching again due to poor communication quality of the terminal, and can avoid the load increase of the target cell after the terminal switches cells, resulting in the decrease of the communication quality of the target cell. The terminal in the target cell is handed over, resulting in a large-scale network migration. Therefore, adopting the above method can ensure that the communication quality of the terminal is improved under the condition of load balancing, and can avoid large-scale network migration caused by excessive changes in the network environment.

In order to improve the communication quality after the terminal accesses the target cell, in an implementation of the embodiment of the present invention, the target cell needs to have a strong carrier aggregation capability and a strong resource transmission capability, which means that the target terminal can be Switch to a cell with a stronger comprehensive capability for communication. Wherein, the comprehensive capability is used to represent carrier aggregation capability and resource transmission capability. Therefore, on the basis of the implementation shown in FIG. 2 , it can also be implemented as the implementation shown in FIG. 3 . Wherein, step 107 determines that the second cell whose first absolute value is smaller than the third threshold is the target cell, which can be specifically implemented as step 1071, and in step 106, the reference ratio value of the primary cell and the reference ratio of each secondary cell of the target terminal are determined After averaging the values, step 108 and step 109 can also be performed:

1071. When there is a third cell in the second cell, determine that the third cell is the target cell. Wherein, the third cell is a cell whose first absolute value is smaller than the third threshold.

108. When there are at least two third cells in the second cell, determine a capability parameter of each third cell.

Wherein, the capability parameter is used to reflect the quantity of secondary cells that can be aggregated by the third cell, the resource occupancy rate of the third cell, and the resource occupancy rate of the secondary cells that can be aggregated by the third cell.

According to the formula Capability_Ti_Sj=α[(1+n)/5]+β[Σ(PRB_Ti+PRB_Ti_Sj)/n], and α+β=1, the capability parameter Capability_Ti_Sj of the i-th third cell is obtained through calculation.

Wherein, α is the carrier aggregation capability factor, which is a value greater than or equal to 0 and less than or equal to 1, and is used to represent the weight of the carrier aggregation capability of the cell in the comprehensive capability of the cell. β is a resource transmission capability factor, which is a number greater than or equal to 0 and less than or equal to 1, and is used to represent the weight of the resource transmission capability of the cell in the overall capability of the cell. It should be noted that the values of α and β can be set according to network expectations or terminal service requirements. When the target cell is expected to have a strong carrier aggregation capability, a larger α can be set, and the target cell is expected to have a strong When resource transmission capacity is used, a larger β can be set.

n is a positive integer less than or equal to 5, indicating the number of secondary carriers corresponding to the i-th third cell, PRB_Ti is the resource idle rate of the i-th third cell, and PRB_Ti_Sj is the j-th carrier corresponding to the i-th third cell Resource idle rate of the secondary cell. In the embodiment of the present invention, the resource idle rate may be obtained according to the resource occupancy rate in the measurement report obtained within a preset time, i is a positive integer greater than 0, and j is a positive integer less than or equal to n.

109. Determine that the third cell whose capability parameter is greater than the fourth threshold is the target cell.

When the capability parameter Capability_Ti_Sj of the i-th third cell satisfies the formula Capability_Ti_Sj≥Th_4, it is determined that the third cell is the target cell. Wherein, Th_4 is the fourth threshold.

A load balancing method provided by an embodiment of the present invention determines the cell whose difference between the reference ratio value and the average value is less than the third threshold as the third cell, and if there is a third cell in the second cell, then determine the third cell is the target cell, and if there are at least two third cells in the second cell, determine that the third cell whose capability parameter is greater than the fourth threshold is the target cell. Compared with the prior art, when the terminal is handed over from the source cell to the target cell, the load of the target cell increases, thereby affecting the communication quality of each terminal in the target cell, and the communication quality of the terminal itself cannot be guaranteed, the present invention The third cell is screened through the carrier aggregation capability and resource transmission capability of the cell, and the terminal can be handed over to a cell with strong carrier aggregation capability and resource transmission capability for communication. Since the communication quality of the cell with stronger comprehensive capability is better, switching the terminal to the cell with strong comprehensive capability for communication means that the communication quality of the terminal can be improved. Therefore, the adoption of the method can ensure that the communication quality after the terminal accesses the target cell is further improved under the condition of load balancing.

In order to determine the only target cell with strong comprehensive capability, in an implementation manner of the embodiment of the present invention, the target cell may be the cell with the strongest comprehensive capability, and then the target terminal is handed over to the cell with the strongest comprehensive capability for communication. Therefore, on the basis of the implementation shown in FIG. 3 , it can also be implemented as the implementation shown in FIG. 4 . Among them, step 109 determines that the third cell whose capability parameter is greater than the fourth threshold is the target cell, which can be specifically implemented as step 1091. When performing step 108, when there are at least two third cells in the second cell, determine that each third cell After the capability parameters of , step 110 can also be performed:

1091. When there is a fourth cell in the third cell, determine that the fourth cell is the target cell.

Wherein, the fourth cell is a third cell whose capability parameter is greater than a fourth threshold.

110. When there are at least two fourth cells in the third cell, determine that the cell with the largest capability parameter among the at least two fourth cells is the target cell.

When there are at least two fourth cells in the third cell, the fourth cells can be sorted according to the capability parameters from large to small, and the sorting result of the capability parameters is recorded as a set A, that is, A={A1≥A2≥... …≥Ax}, x is a positive integer greater than 0. In the embodiment of the present invention, the cell with the largest capability parameter in A may be selected as the target cell.

In a load balancing method provided by an embodiment of the present invention, the third cell whose capability parameter is greater than the fourth threshold is determined as the fourth cell, and if there is a fourth cell in the third cell, the fourth cell is determined to be the target cell , if there are at least two fourth cells in the third cell, determine that the cell with the largest capability parameter is the target cell. Compared with the prior art, when the terminal is handed over from the source cell to the target cell, the load of the target cell increases, thereby affecting the communication quality of each terminal in the target cell, and the communication quality of the terminal itself cannot be guaranteed, the present invention By determining the cell with the strongest comprehensive capability as the target cell, the only target cell with strong comprehensive capability can be determined, so that the terminal can be switched to the cell with the strongest comprehensive capability for communication. Since the communication quality of the cell with the stronger comprehensive capability is better, switching the terminal to the cell with the strongest comprehensive capability for communication can improve the communication quality of the terminal. Therefore, the adoption of the method can ensure that only one target cell is determined under the condition of load balancing, thereby improving the communication quality after the terminal accesses the target cell.

In order to improve the communication quality of the terminal after the cell handover is completed, in an implementation manner of the embodiment of the present invention, a secondary carrier may be configured for the terminal capable of carrier aggregation. Therefore, on the basis of the implementation shown in FIG. 1 , it can also be implemented as the implementation shown in FIG. 5 . Wherein, after step 103 is performed to determine that the first cell whose reference ratio value is greater than the second threshold is the target cell, step 111 may also be performed:

111. Configure a secondary cell corresponding to the target cell for the target cell.

If the target terminal has the capability of carrier aggregation, the base station can actively configure the secondary cell corresponding to the target cell for the target cell according to the resource occupancy rate of the target cell, or the base station can configure the target cell for the target cell after receiving a request from the terminal to add a secondary carrier the corresponding secondary cell.

It should be noted that, in the embodiment of the present invention, the first threshold, the second threshold, the third threshold, and the fourth threshold may be constants set by those skilled in the art according to experience or design requirements.

In a load balancing method provided by an embodiment of the present invention, after a target cell is determined, a corresponding secondary cell is configured for the target cell. Compared with the prior art, when the terminal is handed over from the source cell to the target cell, the load of the target cell increases, thereby affecting the communication quality of each terminal in the target cell, and the communication quality of the terminal itself cannot be guaranteed, the present invention By configuring the corresponding secondary cell for the target cell, the transmission bandwidth of the terminal can be increased, and the data transmission rate of the terminal can be increased, so that the communication quality after the terminal accesses the target cell can be effectively improved. Therefore, the adoption of the method can ensure that the communication quality after the terminal accesses the target cell is effectively improved under the condition of load balancing.

The embodiment of the present invention provides a load balancing device 20, as shown in Figure 6, the device 20 is used to execute any one of the methods shown in Figure 1 to Figure 5, the device 20 includes:

The determining unit 201 is configured to determine a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state.

The determining unit 201 is further configured to determine a reference ratio value of each first cell when the first cell includes at least two cells, where the reference ratio value is used to represent an average SINR of all terminals in the cell.

The determining unit 201 is further configured to determine that the first cell whose reference ratio value is greater than the second threshold is the target cell.

The switching unit 202 is configured to connect the target terminal in the primary cell to the target cell determined by the determining unit 201 .

In an implementation of the embodiment of the present invention, the determining unit 201 is specifically configured to determine that the second cell is the target cell when there is a second cell in the first cell, and the second cell is a target cell whose reference ratio value is greater than the second threshold district.

The determining unit 201 is further configured to determine a reference ratio value of the primary cell and a reference ratio value of the secondary cell of the target terminal when there are at least two second cells in the first cell.

The determining unit 201 is further configured to determine an average value of the reference ratio value of the primary cell and the reference ratio value of each secondary cell of the target terminal.

The determining unit 201 is further configured to determine the second cell whose first absolute value is smaller than the third threshold as the target cell, and the first absolute value is the absolute value of the difference between the reference ratio value and the average value of the second cell.

In an implementation of the embodiment of the present invention, the determining unit 201 is specifically configured to, when there is a third cell in the second cell, determine the third cell as the target cell, where the first absolute value of the third cell is less than the third threshold district.

The determining unit 201 is further configured to determine a capability parameter of each third cell when there are at least two third cells in the second cell, where the capability parameter is used to reflect the number of secondary cells that the third cell can aggregate, the third cell and the resource occupancy rate of the secondary cell that can be aggregated by the third cell.

The determining unit 201 is further configured to determine that a third cell whose capability parameter is greater than a fourth threshold is a target cell.

In an implementation of the embodiment of the present invention, the determining unit 201 is specifically configured to determine the fourth cell as the target cell when there is a fourth cell in the third cell, and the fourth cell is a cell whose capability parameter is greater than the fourth threshold .

The determining unit 201 is further configured to, when there are at least two fourth cells in the third cell, determine that the cell with the largest capability parameter among the at least two fourth cells is the target cell.

In an implementation of the embodiment of the present invention, the device 20 further includes:

The configuring unit 203 is configured to configure the secondary cell corresponding to the target cell for the target cell determined by the determining unit 201 .

A load balancing device provided by an embodiment of the present invention determines a neighbor cell whose signal strength is greater than a first threshold in an overloaded cell as the first cell, and if the first cell includes at least two cells, all the cells in the cell are The first cell whose average SINR of the terminal is greater than the second threshold is determined as the target cell, and then the target terminal in the overloaded cell is handed over to the target cell for communication. Compared with the prior art, the load of the target cell is increased due to the handover of the terminal from the source cell to the target cell, thereby affecting the communication quality of each terminal in the target cell, and at the same time, it is impossible to guarantee the security of the terminal itself after accessing the target cell. Communication quality, the present invention screens the adjacent cells of the overloaded cell through the signal strength and the average SINR of all terminals in the cell, and uses the cell with better communication quality as the target cell, so that when the terminal switches from the source cell to the target cell, the Each terminal will not affect the communication quality due to the increase of the load of the target cell. At the same time, since the terminal accesses a cell with better communication quality for communication, the communication quality of the terminal itself can also be guaranteed. Therefore, the communication quality of the terminal can be improved while ensuring load balance.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant parts, please refer to part of the description of the method embodiment.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (English: Read-Only Memory, abbreviated: ROM) or a random access memory (English: Random Access Memory, abbreviated: RAM), etc.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A method for load balancing, characterized in that the method comprises: Determining a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state; When the first cell includes at least two cells, determine a reference ratio value of each first cell, where the reference ratio value is used to represent an average signal-to-interference-plus-noise ratio SINR of all terminals in the cell; determining that the first cell whose reference ratio value is greater than the second threshold is the target cell; Accessing the target terminal in the primary cell to the target cell. 2. The method according to claim 1, wherein the determining that the first cell whose reference ratio value is greater than the second threshold is the target cell comprises: When there is a second cell in the first cell, determine that the second cell is the target cell, and the second cell is a cell whose reference ratio value is greater than the second threshold; After the determination of the reference ratio value of each first cell, including: When there are at least two second cells in the first cell, determining a reference ratio value of the primary cell and a reference ratio value of the secondary cell of the target terminal; determining an average value of the reference ratio value of the primary cell and the reference ratio value of each secondary cell of the target terminal; Determining that a second cell whose first absolute value is smaller than a third threshold is the target cell, and the first absolute value is an absolute value of a difference between a reference ratio value of the second cell and the average value. 3. The method according to claim 2, wherein the determining that the second cell whose first absolute value is smaller than the third threshold is the target cell comprises: When there is a third cell in the second cell, determine that the third cell is the target cell, and the third cell is a cell whose first absolute value is smaller than the third threshold; After the determination of the average value of the reference ratio value of the primary cell and the reference ratio value of each secondary cell of the target terminal, including: When there are at least two third cells in the second cell, determine a capability parameter of each third cell, where the capability parameter is used to reflect the number of secondary cells that the third cell can aggregate and the resource occupation of the third cell rate, and the resource occupancy rate of the secondary cell that the third cell can aggregate; It is determined that a third cell whose capability parameter is greater than a fourth threshold is the target cell. 4. The method according to claim 3, wherein the determining that the third cell whose capability parameter is greater than a fourth threshold is the target cell comprises: When there is a fourth cell in the third cell, determine that the fourth cell is the target cell, and the fourth cell is a cell whose capability parameter is greater than the fourth threshold; After the determination of the capability parameters of each third cell, including: When there are at least two fourth cells in the third cell, it is determined that the cell with the largest capability parameter among the at least two fourth cells is the target cell. 5. The method according to any one of claims 1 to 4, characterized in that, after determining the target cell, comprising: Configuring a secondary cell corresponding to the target cell for the target cell. 6. A device for load balancing, characterized in that the device comprises: A determining unit, configured to determine a first cell, the first cell is a cell whose signal strength is greater than a first threshold among neighboring cells of the primary cell, and the primary cell is a cell in an overload state; The determining unit is further configured to determine a reference ratio value of each first cell when the first cell includes at least two cells, and the reference ratio value is used to represent an average signal-to-interference plus of all terminals in the cell noise ratio SINR; The determining unit is further configured to determine that the first cell whose reference ratio value is greater than the second threshold is the target cell; A switching unit, configured to connect the target terminal in the primary cell to the target cell determined by the determining unit. 7. The device according to claim 6, wherein the determining unit is specifically configured to, when there is a second cell in the first cell, determine that the second cell is the target cell, the The second cell is a cell whose reference ratio value is greater than the second threshold; The determining unit is further configured to determine a reference ratio value of the primary cell and a reference ratio value of the secondary cell of the target terminal when there are at least two second cells in the first cell; The determining unit is further configured to determine an average value of the reference ratio value of the primary cell and the reference ratio value of each secondary cell of the target terminal; The determining unit is further configured to determine that the second cell whose first absolute value is smaller than the third threshold is the target cell, and the first absolute value is the difference between the reference ratio value of the second cell and the average value Absolute value. 8. The device according to claim 7, wherein the determining unit is specifically configured to, when there is a third cell in the second cell, determine that the third cell is the target cell, the The third cell is a cell whose first absolute value is smaller than the third threshold; The determining unit is further configured to determine a capability parameter of each third cell when there are at least two third cells in the second cell, and the capability parameter is used to reflect the secondary cells that the third cell can aggregate The number, the resource occupancy rate of the third cell, and the resource occupancy rate of the secondary cells that can be aggregated by the third cell; The determining unit is further configured to determine that a third cell whose capability parameter is greater than a fourth threshold is the target cell. 9. The device according to claim 8, wherein the determining unit is specifically configured to, when there is a fourth cell in the third cell, determine that the fourth cell is the target cell, the The fourth cell is a cell whose capability parameter is greater than the fourth threshold; The determining unit is further configured to, when there are at least two fourth cells in the third cell, determine that the cell with the largest capability parameter among the at least two fourth cells is the target cell. 10. The device according to any one of claims 6 to 9, further comprising: A configuring unit, configured to configure a secondary cell corresponding to the target cell for the target cell determined by the determining unit.