CN109862594B - Load adjusting method and device - Google Patents

Abstract

The embodiment of the invention provides a load adjustment method and equipment, wherein the method comprises the steps of configuring priorities for each cell according to capacity expansion information of a base station corresponding to each cell; the cell priority corresponding to the capacity expansion base station is configured as the highest priority; configuring reselection parameters of the cells according to the priorities of the cells so as to enable an idle terminal to preferentially reside in the cell with the highest priority; and if the cells to be adjusted with the current load capacity exceeding the corresponding preset load capacity exist in the cells, adjusting the switching parameters of the cells to be adjusted so that the terminal under the high-priority cell is switched to the low-priority cell based on the adjusted switching parameters, and the current load capacity of each cell after switching does not exceed the preset load capacity of the cell. The load adjusting method provided by the embodiment of the invention can enable each cell to meet the requirement of the preset load capacity, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

Description

Load adjustment method and device

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a load adjustment method and device.

Background technique

Load adjustment refers to the unbalanced load distribution among multiple cells, and even a large proportion of ultra-busy cells or ultra-idle cells have appeared. This makes the load sharing between cells more balanced, and finds a suitable balance point between cell resource utilization and service quality (QoS, call drop rate).

In the existing load adjustment scheme, the load information exchange is realized through the X2 interface of the eNodeB. Four optional loads are defined in the 3rd Generation Partnership Project (3GPP), which are the air interface resource status (Radio Resource Status), S1 interface load indicator (S1 TNL LoadIndicator), Hardware Load Indicator (hardware load indicator) and Composite AvailableCapacity Group (composite available capacity of the cell), the source base station requests one or more kinds of load information from the target base station through the X2 interface.

However, there are obvious differences in the choices of various manufacturers, and this difference will lead to the failure of the load information exchange across manufacturers, resulting in an unsatisfactory load adjustment effect between base station equipment of different manufacturers.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a load adjustment method and device, so as to improve the effect of load adjustment between base station devices of different manufacturers.

In a first aspect, an embodiment of the present invention provides a load adjustment method, including:

According to the capacity expansion information of the base station corresponding to each cell, a priority is configured for each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority;

According to the priority of each cell, configure the reselection parameter of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority;

If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell switches to the cell based on the adjusted handover parameter. Low-priority cells, and the current load of each cell after handover does not exceed its own predetermined load.

In a possible design, the predetermined load includes at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold.

In a possible design, configuring the reselection parameters of each cell according to the priority of each cell includes:

According to the priority of each cell, configure the cell reselection priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different;

According to the signal strength of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, and the inter-frequency high-priority reselection threshold of the highest-priority cell is low. The minimum signal strength among the signal strengths of all the terminals in the current idle state relative to the highest priority cell.

In a possible design, the method further includes:

If the cell satisfies at least one of the predetermined conditions, it is determined that the current load of the cell exceeds its corresponding predetermined load, and the conditions include:

The number of terminals in the cell is greater than the threshold of the number of terminals in the cell;

The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell;

The resource block utilization of the cell is greater than the resource block utilization threshold of the cell.

In a possible design, the handover parameters of the to-be-adjusted cell are adjusted, so that the terminal in the high-priority cell switches to the low-priority cell based on the adjusted handover parameters, and the current load of each cell after the handover The amount does not exceed its own predetermined load, including:

reducing the inter-frequency handover threshold of the to-be-adjusted cell by a predetermined step size;

Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size , until the current load of the to-be-adjusted cell does not exceed its own predetermined load.

In a possible design, the method further includes:

According to the priority of each cell, and according to the policy that the higher the priority, the higher the predetermined load, the corresponding predetermined load is set for each cell.

In a second aspect, an embodiment of the present invention provides a load adjustment device, including:

a priority configuration module, configured to configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the cell priority corresponding to the capacity expansion base station is configured as the highest priority;

A reselection parameter configuration module, configured to configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority;

The handover parameter adjustment module is configured to adjust the handover parameters of the to-be-adjusted cell if there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each cell, so that the terminal in the high-priority cell is based on the The adjusted handover parameters are switched to the low-priority cell, and the current load of each cell after the handover does not exceed its own predetermined load.

In a possible design, the predetermined load includes at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold.

In a possible design, the reselection parameter configuration module is specifically used for:

According to the priority of each cell, configure the cell reselection priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different;

According to the current signal strength of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, so that idle terminals can preferentially camp on the highest-priority cell ; wherein the inter-frequency high-priority reselection threshold of the highest-priority cell is lower than the minimum signal strength among the signal strengths of all currently idle terminals relative to the highest-priority cell.

In a possible design, the device further includes:

A determination module, configured to determine that the current load of the cell exceeds its corresponding predetermined load if the cell satisfies at least one of the predetermined conditions, and the conditions include:

The number of terminals in the cell is greater than the threshold of the number of terminals in the cell;

The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell;

The resource block utilization of the cell is greater than the resource block utilization threshold of the cell.

In a possible design, the switching parameter adjustment module is specifically used for:

If there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each of the cells, reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step;

Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size , until the current load of the to-be-adjusted cell does not exceed its own predetermined load.

In a possible design, the device further includes:

The predetermined load configuration module is configured to set a corresponding predetermined load for each cell according to the priority of each cell and according to a policy that the higher the priority, the higher the predetermined load.

In a third aspect, an embodiment of the present invention provides a load adjustment device, including: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes computer-implemented instructions stored in the memory to cause the at least one processor to perform the methods described in the first aspect and various possible designs of the first aspect above.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the first aspect and the first Aspects various possible designs of the described method.

In the load adjustment method and device provided in this embodiment, the method uses the cell corresponding to the expansion base station as the highest priority cell, and then configures reselection parameters so that idle terminals can preferentially camp on the highest priority cell. And according to the current load and the predetermined load of each cell, the handover parameters of the overloaded cell whose current load does not meet the predetermined load requirement are adjusted, so that the terminal in the service state is switched from the overloaded high-priority cell to the low-priority cell. on the priority cell. It is possible to make each cell meet the demand of the predetermined load, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1-A to 1-B are schematic diagrams of load information exchange between base stations according to an embodiment of the present invention;

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

FIG. 3 is a schematic flowchart of a load adjustment method provided by still another embodiment of the present invention;

FIG. 4 is a schematic flowchart of a load adjustment method provided by another embodiment of the present invention;

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

FIG. 6 is a schematic flowchart of a load adjustment method provided by still another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a load adjustment device provided by another embodiment of the present invention;

8 is a schematic structural diagram of a load adjustment device provided by another embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a load adjustment device provided by still another embodiment of the present invention;

FIG. 10 is a schematic diagram of a hardware structure of a load adjustment device according to another embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-A to 1-B are schematic diagrams of load information exchange between base stations according to an embodiment of the present invention. The load information exchange between base stations is realized through the X2 interface. The X2 interface is established by Long Term Evolution (LTE) to facilitate work communication between peer network elements and to break the communication barriers between base stations in previous wireless standards. LTE is a long-term evolution of the Universal Mobile Telecommunications System (UMTS) technical standard formulated by the 3rd Generation Partnership Project (3GPP). The X2 interface control plane can monitor the resource status and load status between the base stations, which is used as the basis for judgment of load adjustment, load control or admission control between base stations. Load information exchange process, including load request process and load update process. As shown in FIG. 1-A, the load request process includes: the first base station sends load request information to the second base station, where the load request information includes load type and load interaction period; the second base station receives the load request information After the load request information is received, the load response information is sent to the first base station. As shown in FIG. 1-B, the load update process includes: the second base station measures the load of each cell in the base station according to the load request information sent by the first base station, and reports to the first base station according to the load exchange period. A base station feeds back load response information.

Load Balance (LB) refers to the unbalanced load distribution among multiple cells, and even a large proportion of ultra-busy cells or ultra-idle cells have appeared. The utilization rate of idle cells makes the load sharing between cells more balanced, and a suitable balance point is found between cell resource utilization and service quality. That is to say, the problem to be solved by load adjustment is to draw traffic from cells with high load to cells with low utilization rate. A cell, also called a cell, refers to an area covered by a base station or a part of the base station (sector antenna) in a cellular mobile communication system, in which UE can reliably communicate with the base station through a wireless channel. In order to achieve load adjustment, each cell can perform load adjustment by performing the above-mentioned exchange of load information between base stations, and switch users whose load is overloaded to a base station cell with a lower load.

It can be seen that the interaction of load information between base stations is a prerequisite for realizing load adjustment of each cell. 3GPP defines four optional load information types, namely Radio Resource Status, S1 TNL Load Indicator, Hardware Load Indicator and Composite Available Capacity Group. ). The source base station can request at least one of the above-mentioned four kinds of load information from the target base station through the X2 interface, but the selection of load information classification is different for the base station equipment produced by each manufacturer. As a result, the load information exchange between different manufacturers fails, and the load adjustment cannot be effectively implemented. Based on this, an embodiment of the present invention provides a load adjustment method to realize load adjustment of base stations of different manufacturers.

Specific embodiments are used below to describe the load adjustment method provided by the embodiments of the present invention.

FIG. 2 is a schematic flowchart of a load adjustment method according to another embodiment of the present invention. As shown in Figure 2, the method includes:

S201. Configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority.

Optionally, the execution body of the method may be a load adjustment device capable of connecting with the base station corresponding to each cell to obtain the load amount of each cell. The load may be at least one of the number of terminals in each cell, the perceived rate of a single user, and the utilization rate of resource blocks.

In this embodiment, the base stations corresponding to the cells are produced by different manufacturers, so there is a problem that the load information cannot be exchanged directly through the X2 interface.

Optionally, the capacity expansion base station refers to a base station that adds new hardware to the original base station to increase user bearer capacity, for example, adds a new transmission receiver unit (Transmission Receiver Unit, TRU).

In this embodiment, the newly added carrier frequency of the expansion base station is less susceptible to interference than the carrier frequency, which can ensure the quality of the call. community.

S202. Configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority.

Optionally, each cell can be set to multiple priorities. For example, priority 0 to priority 7, priority 7 is the highest priority.

Optionally, the reselection parameters may include a cell reselection priority and a cell reselection threshold.

By setting a lower cell reselection threshold, it is easier for an idle terminal on a serving cell to reselect to a target cell with a higher priority.

For example, the priority of the serving cell is 6, and the reselection candidate cells obtained by the idle state terminal of the serving cell include a cell with a priority of 7, a cell with a priority of 5, and a cell with a priority of 4. By lowering the reselection threshold of the serving cell relative to the cell with priority 7, the idle state terminal can be preferentially camped on the cell with priority 7.

Optionally, in a specific embodiment, the method may further include: if the load of the idle-state terminals of the highest-priority cell exceeds a predetermined number, controlling an optional method of controlling the load of the idle-state terminals of the highest-priority cell. The implementation manner is to increase the reselection threshold of each serving cell relative to the highest priority cell, so that idle terminals of each serving cell reside in the serving cell without reselection to the highest priority cell. Another achievable manner may be to make the idle state terminals of each serving cell reselect to the non-highest priority cell by lowering the reappearance threshold of each serving cell relative to the non-highest priority cell.

S203. If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell is based on the adjusted handover parameter Switch to a low-priority cell, and the current load of each cell after switching does not exceed its own predetermined load.

Optionally, the predetermined load may be a range defined by a single threshold, for example, smaller than the single threshold or greater than the single threshold; the predetermined load may also be a range defined by two thresholds, such as one of the thresholds as A minimum threshold value, another threshold value is used as a maximum threshold value, and the predetermined load amount is a range defined between the minimum threshold value and the maximum threshold value.

The fact that the current load exceeds its corresponding predetermined load may include: the current load is less than the minimum threshold, or the current load is greater than the maximum threshold.

In a specific embodiment, the method further includes: if the current load of the to-be-adjusted cell is less than the minimum threshold, increasing the handover threshold relative to the target cell, so that the users in the service state are preferentially camped on the to-be-adjusted cell. Adjust the area.

In the load adjustment method provided in this embodiment, the cell corresponding to the expansion base station is regarded as the highest priority cell, and then the terminal in the idle state is preferentially camped on the highest priority cell by configuring reselection parameters. And according to the current load and the predetermined load of each cell, the handover parameters of the overloaded cell whose current load does not meet the predetermined load requirement are adjusted, so that the terminal in the service state is switched from the overloaded high-priority cell to the low-priority cell. on the priority cell. It is possible to make each cell meet the demand of the predetermined load, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

Optionally, the predetermined load includes at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold.

FIG. 3 is a schematic flowchart of a load adjustment method provided by still another embodiment of the present invention. As shown in Figure 3, the method includes:

S301. Configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the cell priority corresponding to the capacity expansion base station is configured as the highest priority.

Step S301 in this embodiment is similar to step S201 in the foregoing embodiment, and details are not described herein again.

S302. Configure the cell reselection priority of each cell according to the priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different.

Optionally, cells of different standards can be assigned different priorities according to the quality of the call, for example: the cells of the second generation mobile phone communication technical specification (2-Generation wireless telephone technology, 2G) are set to priority 0 to priority. 2. The cells of the 3-Generation wireless telephone technology (3G) are set to priority 3 to priority 4, and the cells of LTE are set to priority 5 to priority 7. Optionally, based on the above settings, for cells in different systems, according to whether they are cells corresponding to the newly expanded base station, the cell corresponding to the newly expanded base station is set as the highest priority, and the unexpanded base station is set as a lower priority.

S303. According to the current signal strengths of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, so that idle terminals can preferentially camp in the highest-priority cell. On the cell; wherein the inter-frequency high-priority reselection threshold of the highest-priority cell is lower than the minimum signal strength among the signal strengths of all currently idle terminals relative to the highest-priority cell.

Optionally, the inter-frequency high-priority reselection threshold means that when the cell reselection priority of the target frequency is higher than the cell reselection priority of the serving cell, the UE reselection from the serving cell to the target frequency is used as the UE. Click the access level threshold of the cell. After the UE starts the cell reselection measurement of the cell under the target frequency, if the access level of the cell under the target frequency is always higher than the threshold within the reselection delay time, the UE can reselect to this cell. The inter-frequency high-priority reselection threshold is applicable to Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD) of LTE.

Optionally, according to the empirical value, the high-priority reselection threshold of the inter-frequency point of the highest-priority cell can be set to -116dBm. When the UE is in a high-priority cell, and the signal strength is greater than -116dBm, and at the same time for 1 second, the UE will preferentially camp in the high-priority cell.

S304. If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell is based on the adjusted handover parameter Switch to a low-priority cell, and the current load of each cell after switching does not exceed its own predetermined load.

Step S304 in this embodiment is similar to step S203 in the foregoing embodiment, and details are not described herein again.

The load adjustment method provided in this embodiment uses the cell corresponding to the expansion base station as the highest priority cell, and then configures the cell reselection priority and the inter-frequency high-priority reselection threshold, so that the cell reselection priority is the same as the above-mentioned The priorities are matched, so that the terminal in the idle state preferentially camps on the highest priority cell. And according to the current load and the predetermined load of each cell, the handover parameters of the overloaded cell whose current load does not meet the predetermined load requirement are adjusted, so that the terminal in the service state is switched from the overloaded high-priority cell to the low-priority cell. on the priority cell. It can make the idle terminals of each cell preferentially camp on the target cell whose priority is higher than that of the serving cell according to the priority, and enable the idle terminal to use the resources of the high-priority cell preferentially after the service connection, to ensure the user experience, and for the follow-up. The business status load adjustment lays the foundation.

FIG. 4 is a schematic flowchart of a load adjustment method provided by another embodiment of the present invention. As shown in Figure 4, the method includes:

S401. Configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority.

S402. Configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority.

Steps S401 and S402 in this embodiment are similar to steps S201 and S202 in the foregoing embodiment, and details are not repeated here.

S403. If the cell satisfies at least one of the predetermined conditions, determine that the current load of the cell exceeds its corresponding predetermined load, and the conditions include:

The number of terminals in the cell is greater than the threshold of the number of terminals in the cell;

The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell;

The resource block utilization of the cell is greater than the resource block utilization threshold of the cell.

Optionally, the preset conditions may further include: limit conditions of parameters used to characterize the load, such as call drop rate and service quality satisfaction rate.

S404. If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell is based on the adjusted handover parameter Switch to a low-priority cell, and the current load of each cell after switching does not exceed its own predetermined load.

Step S404 in this embodiment is similar to step S203 in the foregoing embodiment, and details are not described herein again.

In the load adjustment method provided in this embodiment, the cell corresponding to the expansion base station is regarded as the highest priority cell, and then the terminal in the idle state is preferentially camped on the highest priority cell by configuring reselection parameters. And according to the judgment result obtained by comparing the current load of each cell with the predetermined condition, the handover parameters of the overloaded cell whose current load does not meet the predetermined load requirement are adjusted, so that the terminal in the service state can change from the overloaded cell The high-priority cell is handed over to the low-priority cell. The handover parameters can be adjusted for the cells that need to be adjusted in a purposeful manner, and the efficiency of achieving load adjustment can be improved.

FIG. 5 is a schematic flowchart of a load adjustment method provided by another embodiment of the present invention. As shown in Figure 5, the method includes:

S501. Configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority.

S502. Configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority.

Steps S501 and S502 in this embodiment are similar to steps S201 and S202 in the foregoing embodiment, and details are not repeated here.

S503. If there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each of the cells, reduce the inter-frequency handover threshold of the cell to be adjusted by a predetermined step.

Optionally, the predetermined step size may be set according to the proportional relationship between the switching threshold obtained from historical data and the load.

S504. Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to executing the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size until the current load of the cell to be adjusted does not exceed its own predetermined load.

Optionally, reduce the inter-frequency handover threshold of the to-be-adjusted cell with a predetermined step size, and if the current load of the to-be-adjusted cell still does not meet the predetermined load after the first reduction operation is completed, continue the process. The second reduction operation is performed until the current load of the to-be-adjusted cell satisfies the predetermined load.

Optionally, each reduction operation can be set to a different value, for example, 2dB is used for the first time, 1dB is used for the second time, and 0.5dB is used for the third time. The specific value to be adopted can be determined according to the difference between the current load amount and the predetermined load amount. If the difference is large, use a step with a high value, such as 2dB, and if the difference is small, use a step with a low value, such as 0.5dB.

The load adjustment method provided by the embodiment of the present invention makes the terminal in the idle state preferentially camp on the highest priority cell by setting the cell corresponding to the expansion base station as the highest priority cell, and then configuring the reselection parameters. And according to the current load and the predetermined load of each cell, the handover parameters of the overloaded cells whose current load does not meet the predetermined load requirements are adjusted with a predetermined step size, so that the terminal in the service state is changed from the overloaded high priority. The cell is handed over to the lower priority cell. It is possible to make each cell meet the demand of the predetermined load, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

FIG. 6 is a schematic flowchart of a load adjustment method provided by still another embodiment of the present invention. As shown in Figure 2, the method includes:

S601. Configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority.

S602. Configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority.

Steps S601 and S602 in this embodiment are similar to steps S201 and S202 in the above-mentioned embodiment, and are not repeated here.

S603. According to the priority of each cell, and according to the policy that the higher the priority is, the higher the predetermined load is, the corresponding predetermined load is set for each cell.

In this embodiment, the cell with the highest priority corresponds to the newly added carrier frequency of the expansion base station. Compared with the original carrier frequency, the interference is small and the number of users that can be carried is large. Therefore, the cell with the highest priority is set to a higher predetermined load. , which can not only ensure the call quality, but also maximize the use of carrier resources.

S604. If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell is based on the adjusted handover parameter Switch to a low-priority cell, and the current load of each cell after switching does not exceed its own predetermined load.

Step S604 in this embodiment is similar to step S203 in the foregoing embodiment, and details are not described herein again.

The load adjustment method provided in this embodiment can accommodate more users by setting the priority of the cell corresponding to the expansion base station to the highest priority, and setting the highest priority cell to the highest predetermined load, so that more users can be accommodated. At the same time, the call quality can also be guaranteed.

FIG. 7 is a schematic structural diagram of a load adjustment device provided by another embodiment of the present invention. As shown in FIG. 7 , the load adjustment device 70 includes: a priority configuration module 701 , a reselection parameter configuration module 702 and a handover parameter adjustment module.

The priority configuration module 701 is configured to configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority.

In this embodiment, the base stations corresponding to the cells are produced by different manufacturers, so there is a problem that the load information cannot be exchanged directly through the X2 interface.

Optionally, the capacity expansion base station refers to a base station that adds new hardware to the original base station to increase user bearer capacity, for example, adds a new transmission receiver unit (Transmission Receiver Unit, TRU).

In this embodiment, the newly added carrier frequency of the expansion base station is less susceptible to interference than the carrier frequency, which can ensure the quality of the call. community.

The reselection parameter configuration module 702 is configured to configure the reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority.

Optionally, each cell can be set to multiple priorities. For example, priority 0 to priority 7, priority 7 is the highest priority.

Optionally, the reselection parameters may include a cell reselection priority and a cell reselection threshold.

By setting a lower cell reselection threshold, it is easier for an idle terminal on a serving cell to reselect to a target cell with a higher priority.

For example, the priority of the serving cell is 6, and the reselection candidate cells obtained by the idle state terminal of the serving cell include a cell with a priority of 7, a cell with a priority of 5, and a cell with a priority of 4. By lowering the reselection threshold of the serving cell relative to the cell with priority 7, the idle state terminal can be preferentially camped on the cell with priority 7.

Optionally, in a specific embodiment, the method may further include: if the load of the idle-state terminals of the highest-priority cell exceeds a predetermined number, controlling an optional method of controlling the load of the idle-state terminals of the highest-priority cell. The implementation manner is to increase the reselection threshold of each serving cell relative to the highest priority cell, so that idle terminals of each serving cell reside in the serving cell without reselection to the highest priority cell. Another achievable manner may be to make the idle state terminals of each serving cell reselect to the non-highest priority cell by lowering the reappearance threshold of each serving cell relative to the non-highest priority cell.

The handover parameter adjustment module 703 is configured to adjust the handover parameter of the to-be-adjusted cell if there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each cell, so that the terminal in the high-priority cell Handover to a low-priority cell based on the adjusted handover parameters, and the current load of each cell after handover does not exceed its own predetermined load.

Optionally, the predetermined load may be a range defined by a single threshold, for example, smaller than the single threshold or greater than the single threshold; the predetermined load may also be a range defined by two thresholds, such as one of the thresholds as A minimum threshold value, another threshold value is used as a maximum threshold value, and the predetermined load amount is a range defined between the minimum threshold value and the maximum threshold value.

The fact that the current load exceeds its corresponding predetermined load may include: the current load is less than the minimum threshold, or the current load is greater than the maximum threshold.

In a specific embodiment, the method further includes: if the current load of the to-be-adjusted cell is less than the minimum threshold, increasing the handover threshold relative to the target cell, so that the users in the service state are preferentially camped on the to-be-adjusted cell. Adjust the area.

In the load adjustment method provided in this embodiment, the cell corresponding to the expansion base station is regarded as the highest priority cell, and then the terminal in the idle state is preferentially camped on the highest priority cell by configuring reselection parameters. And according to the current load and the predetermined load of each cell, the handover parameters of the overloaded cell whose current load does not meet the predetermined load requirement are adjusted, so that the terminal in the service state is switched from the overloaded high-priority cell to the low-priority cell. on the priority cell. It is possible to make each cell meet the demand of the predetermined load, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

In the load adjustment device provided by the embodiment of the present invention, the priority configuration module 701 uses the cell corresponding to the expansion base station as the highest priority cell, and then configures the reselection parameters through the reselection parameter configuration module 702, so that the idle state terminal preferentially resides in the highest priority cell on the priority cell. And the handover parameter adjustment module 703 adjusts the handover parameters of the overloaded cells whose current load does not meet the predetermined load requirement according to the current load and the predetermined load of each cell, so that the terminal in the service state is given priority from the overloaded high priority. The high-priority cell is handed over to the low-priority cell. It is possible to make each cell meet the demand of the predetermined load, thereby realizing the load adjustment of the cells corresponding to the base stations of different manufacturers.

FIG. 8 is a schematic structural diagram of a load adjustment device according to another embodiment of the present invention. As shown in FIG. 8 , the load adjustment device 80 further includes: a determination module 704 .

A determination module 704, configured to determine that the current load of the cell exceeds its corresponding predetermined load if the cell satisfies at least one of the predetermined conditions, and the conditions include:

The number of terminals in the cell is greater than the threshold of the number of terminals in the cell;

The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell;

The resource block utilization of the cell is greater than the resource block utilization threshold of the cell.

FIG. 9 is a schematic structural diagram of a load adjustment device provided by still another embodiment of the present invention. As shown in FIG. 9 , the load adjustment device 90 further includes: a predetermined load configuration module 705 .

The predetermined load configuration module 705 is configured to set a corresponding predetermined load for each cell according to the priority of each cell and according to a policy that the higher the priority, the higher the predetermined load.

Optionally, the predetermined load includes at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold.

Optionally, the reselection parameter configuration module is specifically used for:

According to the priority of each cell, configure the cell reselection priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different;

According to the current signal strength of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, so that idle terminals can preferentially camp on the highest-priority cell ; wherein the inter-frequency high-priority reselection threshold of the highest-priority cell is lower than the minimum signal strength among the signal strengths of all currently idle terminals relative to the highest-priority cell.

Optionally, the switching parameter adjustment module is specifically used for:

If there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each of the cells, reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step;

Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size , until the current load of the to-be-adjusted cell does not exceed its own predetermined load.

The load adjustment device provided in the embodiment of the present invention can be used to execute the above-mentioned method embodiments, and the implementation principle and technical effect thereof are similar, and details are not described herein again in this embodiment.

FIG. 10 is a schematic diagram of a hardware structure of a load adjustment device according to another embodiment of the present invention. As shown in FIG. 10 , the load adjustment device 100 provided in this embodiment includes: at least one processor 1001 and a memory 1002 . The load adjustment device 100 also includes a communication part 1003 . The processor 1001 , the memory 1002 and the communication unit 1003 are connected through a bus 1004 .

In a specific implementation process, the at least one processor 1001 executes the computer-executed instructions stored in the memory 1002, so that the at least one processor 1001 executes the load adjustment method performed by the load adjustment device 100 above.

The communication component 1003 may receive the current load of each cell sent by the corresponding cell of each base station, and send the handover parameter generated according to the current load to the corresponding cell.

For the specific implementation process of the processor 1001, reference may be made to the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again in this embodiment.

In the above-mentioned embodiment shown in FIG. 10, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the invention can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one disk memory.

The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, a Peripheral Component (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, or the like. The bus can be divided into address bus, data bus, control bus and so on. For convenience of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

The present application also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above load adjustment method performed by the load adjustment device is implemented.

The present application also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above load adjustment method performed by the load adjustment device is implemented.

The above-mentioned computer-readable storage medium, the above-mentioned readable storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium may be located in application specific integrated circuits (Application Specific Integrated Circuits, ASIC for short). Of course, the processor and the readable storage medium may also exist in the device as discrete components.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (12)

1. a load adjustment method, is characterized in that, comprises: According to the capacity expansion information of the base station corresponding to each cell, a priority is configured for each cell; wherein, the priority of the cell corresponding to the capacity expansion base station is configured as the highest priority; According to the priority of each cell, configure the reselection parameter of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority; If there is a to-be-adjusted cell whose current load exceeds its corresponding predetermined load in each of the cells, adjust the handover parameters of the to-be-adjusted cell, so that the terminal in the high-priority cell switches to the cell based on the adjusted handover parameter. Low-priority cells, and the current load of each cell after handover does not exceed its own predetermined load; The configuring the reselection parameters of the cells according to the priorities of the cells includes: According to the priority of each cell, configure the cell reselection priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different; According to the signal strength of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, and the inter-frequency high-priority reselection threshold of the highest-priority cell is low. The minimum signal strength among the signal strengths of all the terminals in the current idle state relative to the highest priority cell. 2 . The method according to claim 1 , wherein the predetermined load comprises at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold. 3 . 3. The method according to claim 1, wherein the method further comprises: If the cell satisfies at least one of the predetermined conditions, it is determined that the current load of the cell exceeds its corresponding predetermined load, and the conditions include: The number of terminals in the cell is greater than the threshold of the number of terminals in the cell; The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell; The resource block utilization of the cell is greater than the resource block utilization threshold of the cell. 4. The method according to claim 1, wherein the adjusting the handover parameters of the to-be-adjusted cell so that the terminal in the high-priority cell switches to the low-priority cell based on the adjusted handover parameter, and After handover, the current load of each cell does not exceed its own predetermined load, including: reducing the inter-frequency handover threshold of the to-be-adjusted cell by a predetermined step size; Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size , until the current load of the to-be-adjusted cell does not exceed its own predetermined load. 5. The method according to any one of claims 1-4, wherein the method further comprises: According to the priority of each cell, and according to the policy that the higher the priority, the higher the predetermined load, the corresponding predetermined load is set for each cell. 6. A load adjustment device, characterized in that, comprising: a priority configuration module, configured to configure a priority for each cell according to the capacity expansion information of the base station corresponding to each cell; wherein, the cell priority corresponding to the capacity expansion base station is configured as the highest priority; A reselection parameter configuration module, configured to configure reselection parameters of each cell according to the priority of each cell, so that the terminal in the idle state preferentially camps on the cell with the highest priority; The handover parameter adjustment module is configured to adjust the handover parameters of the to-be-adjusted cell if there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each cell, so that the terminal in the high-priority cell is based on the The adjusted handover parameters are switched to the low-priority cell, and the current load of each cell after the handover does not exceed its own predetermined load; The reselection parameter configuration module is specifically used for: According to the priority of each cell, configure the cell reselection priority of each cell, wherein a cell with a higher priority has a higher cell reselection priority, and the cell reselection priorities of different systems are different; According to the current signal strength of all idle terminals in each cell relative to the highest-priority cell, configure the inter-frequency high-priority reselection threshold of each cell, so that idle terminals can preferentially camp on the highest-priority cell ; wherein the inter-frequency high-priority reselection threshold of the highest-priority cell is lower than the minimum signal strength among the signal strengths of all currently idle terminals relative to the highest-priority cell. 7 . The device according to claim 6 , wherein the predetermined load comprises at least one of a terminal quantity threshold, a single-user perceived rate threshold, and a resource block utilization threshold. 8 . 8. The device according to claim 6, wherein the device further comprises: A determination module, configured to determine that the current load of the cell exceeds its corresponding predetermined load if the cell satisfies at least one of the predetermined conditions, and the conditions include: The number of terminals in the cell is greater than the threshold of the number of terminals in the cell; The single-user sensing rate of the cell is less than the single-user sensing rate threshold of the cell; The resource block utilization of the cell is greater than the resource block utilization threshold of the cell. 9. The device according to claim 6, wherein the switching parameter adjustment module is specifically used for: If there is a cell to be adjusted whose current load exceeds its corresponding predetermined load in each of the cells, reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step; Obtain the current load of the cell to be adjusted, and if the current load of the cell to be adjusted exceeds the corresponding predetermined load, return to the step of reducing the inter-frequency handover threshold of the cell to be adjusted by a predetermined step size , until the current load of the to-be-adjusted cell does not exceed its own predetermined load. 10. The device according to any one of claims 6-9, wherein the device further comprises: The predetermined load configuration module is configured to set a corresponding predetermined load for each cell according to the priority of each cell and according to a policy that the higher the priority, the higher the predetermined load. 11. A load adjustment device, comprising: at least one processor and a memory; the memory stores computer-executable instructions; The at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the load adjustment method of any one of claims 1-5. 12. A computer-readable storage medium, characterized in that, computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the computer-executable instructions as claimed in any one of claims 1 to 5 are implemented. the load adjustment method described above.

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