CN110876167B

CN110876167B - Method, device, equipment and medium for determining pilot frequency load balancing threshold

Info

Publication number: CN110876167B
Application number: CN201810997147.0A
Authority: CN
Inventors: 郭宝; 张阳; 周红岗; 郭鹏; 姚坤; 张华�; 吕芳迪; 方媛; 沈骜; 沈金虎; 程楠; 刘毅; 顾安
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Shanxi Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Shanxi Co Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2022-02-01
Anticipated expiration: 2038-08-29
Also published as: CN110876167A

Abstract

The invention discloses a method, a device, equipment and a medium for determining a pilot frequency load balancing threshold. The method comprises the following steps: when a high-load cell is used as a service cell, selecting a pilot frequency adjacent cell with high overlapping coverage degree with the service cell from the pilot frequency adjacent cells according to the overlapping coverage degree between the service cell and the pilot frequency adjacent cells of the service cell; determining a target adjacent cell in the pilot frequency adjacent cells with high overlapping coverage degree based on the sampling point of the pilot frequency adjacent cell under the service cell; and acquiring Reference Signal Received Power (RSRP) of a Measurement Report (MR) sampling point when the target adjacent cell is used as a service cell, and taking the RSRP as a switching threshold value A4. According to the technical scheme provided by the embodiment of the invention, the load balance can be accurately realized, and the use perception of the UE after the balance is executed is further ensured.

Description

Method, device, equipment and medium for determining pilot frequency load balancing threshold

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a computer storage medium for determining a pilot frequency load balancing threshold.

Background

The existing load control method is based on User Equipment (UE) measurement and reporting to select the best neighbor cell as the target neighbor cell; or, selecting the neighbor cell with the highest priority as the target neighbor cell. When the load of the target neighboring cell is heavy, i.e., the load is unbalanced, normal communication of the UE cannot be ensured.

In addition, the existing load control method adopts a predetermined uniformly set threshold for the handover threshold value a4 for handover from the serving cell to the target neighbor cell. According to a uniform threshold, the service may not be balanced to a target adjacent cell in time; or, if the target neighboring cell is balanced too fast, the target neighboring cell may be reselected after a suitable target neighboring cell is not selected or the target neighboring cell is switched to an unsuitable target neighboring cell, thereby causing frequent switching and load imbalance.

By combining the above analysis, the existing method cannot accurately realize load balancing, and thus it is difficult to ensure the use perception of the UE after performing balancing.

Disclosure of Invention

The embodiment of the invention provides a method, a device and equipment for determining a pilot frequency load balancing threshold and a computer storage medium, which can accurately realize load balancing.

In a first aspect, a method for determining a pilot frequency load balancing threshold is provided, including:

when a high-load cell is used as a service cell, selecting a pilot frequency adjacent cell with high overlapping coverage degree with the service cell from the pilot frequency adjacent cells according to the overlapping coverage degree between the service cell and the pilot frequency adjacent cells of the service cell;

determining a target adjacent cell in the pilot frequency adjacent cells with high overlapping coverage degree based on the sampling point of the pilot frequency adjacent cell under the service cell;

and acquiring Reference Signal Received Power (RSRP) of a Measurement Report (MR) sampling point when the target adjacent cell is used as a service cell, and taking the RSRP as a switching threshold value A4.

The selecting the pilot frequency adjacent cell with high overlapping coverage with the service cell from the pilot frequency adjacent cells according to the overlapping coverage between the service cell and the pilot frequency adjacent cells of the service cell comprises the following steps:

screening all MR data of the high-load cell, and obtaining the sampling point proportion of the pilot frequency adjacent cell according to the sample number of all pilot frequency sampling points when the high-load cell is used as a service cell;

arranging the sampling point proportion of the pilot frequency adjacent cells under the high-load cell from high to low, and screening the first n pilot frequency adjacent cells, wherein n is a positive integer which is more than 0 and less than or equal to 6;

calculating the difference value between the RSRP of the pilot frequency sampling points of the first n pilot frequency adjacent cells and the RSRP of the corresponding sampling points of the serving cell;

and selecting k adjacent cells from the previous n adjacent cells as pilot frequency adjacent cells with high overlapping coverage degree through the difference, wherein k is a positive integer less than or equal to n. And acquiring Power Headroom Reports (PHRs) of all MR sampling points when the target adjacent cell serves as a service cell, and taking the RSRP corresponding to the PHRs as a switching threshold value A4 according to the corresponding relation between the PHRs and the RSRP.

The method for determining the target neighbor cell in the pilot frequency neighbor cell with high overlapping coverage based on the sampling point of the pilot frequency neighbor cell in the service cell comprises the following steps:

and in the pilot frequency adjacent cells with high overlapping coverage, determining the pilot frequency adjacent cells as target adjacent cells according to the sequence of the sampling point proportion from high to low through the coverage rate requirement, wherein the sampling point proportion is data obtained according to the sampling points.

The coverage requirement includes that a ratio of the number of sampling points for which the power headroom report, PHR, is less than zero to the number of sampling points for which the PHR is greater than zero is less than a coverage threshold.

The acquiring RSRP of the MR sampling point when the target neighboring cell is used as the serving cell, and using the RSRP as a switching threshold value a4, includes:

collecting PHRs of all MR sampling points when a target adjacent cell serves as a service cell, and taking the RSRP corresponding to the PHRs as a switching threshold value A4 according to the corresponding relation between the PHRs and the RSRP.

The acquiring RSRP of the MR sampling point when the target neighboring cell is used as the serving cell, and after the RSRP is used as the switching threshold value a4, the method further includes:

calculating an average value Av1 of differences between RSRPs of all MR sampling points of the current service cell and RSRPs of corresponding MR sampling points of a target adjacent cell of the current service cell;

the sum of the handover threshold value a4, the preset offset of the current serving cell and the average value Av1,

the threshold value a2 is measured as the pilot frequency of the current serving cell.

After the sum of the handover threshold value a4 and the preset offset and average value Av1 of the current serving cell is used as the pilot frequency start threshold value a2 of the current serving cell, the method further includes:

and taking the sum of the switching threshold value A4, the preset bias of the target adjacent cell and the threshold value A3 as the switching threshold value for switching the target adjacent cell to the serving cell.

The high load cell includes:

the cell with the average online user number reaching the user threshold, the uplink utilization rate reaching the uplink utilization rate threshold and the uplink flow reaching the uplink flow threshold;

alternatively, the first and second electrodes may be,

and the average online user number reaches a user threshold, the downlink utilization rate reaches a downlink utilization rate threshold, and the downlink flow reaches a downlink flow threshold.

In a second aspect, an apparatus for determining a pilot frequency load balancing threshold is provided, including:

the selection module is used for selecting the pilot frequency adjacent cell with high overlapping coverage degree with the service cell from the pilot frequency adjacent cells according to the overlapping coverage degree between the service cell and the pilot frequency adjacent cells of the service cell when the high-load cell is used as the service cell;

the target neighbor cell determining module is used for determining a target neighbor cell in the pilot frequency neighbor cells with high overlapping coverage degree based on the sampling point of the pilot frequency neighbor cells under the service cell;

the first threshold determination module is configured to acquire reference signal received power RSRP of a measurement report MR sampling point when a target neighboring cell serves as a serving cell, and use the RSRP as a handover threshold value a 4.

The selecting module is specifically configured to:

and selecting k adjacent cells from the previous n adjacent cells as pilot frequency adjacent cells with high overlapping coverage degree through the difference, wherein k is a positive integer less than or equal to n.

The target neighboring cell determining module is specifically configured to:

The coverage requirements include:

the ratio of the number of sampling points for which the power headroom report PHR is less than zero to the number of sampling points for which the PHR is greater than zero is less than a coverage threshold.

The first threshold determining module is specifically configured to:

The determining means further comprises:

the second threshold determining module is used for calculating an average Av1 of differences between RSRPs of all the MR sampling points of the current service cell and RSRPs of the MR sampling points corresponding to the target adjacent cell of the current service cell; and taking the sum of the switching threshold value A4 and the preset offset and average value Av1 of the current serving cell as the pilot frequency start measuring threshold value A2 of the current serving cell.

The determining means further comprises:

and a third threshold determining module, configured to use a sum of the handover threshold value a4, the preset bias of the target neighboring cell, and the threshold value A3 as a handover threshold value for the target neighboring cell to switch to the serving cell.

The high load cell includes:

alternatively, the first and second electrodes may be,

In a third aspect, an apparatus for determining a pilot frequency load balancing threshold is provided, including: a processor and a memory storing computer program instructions;

the processor, when executing the computer program instructions, implements the method of the first aspect as in the embodiments described above.

In a fourth aspect, there is provided a computer storage medium having computer program instructions stored thereon which, when executed by a processor, implement the method of the first aspect of the above embodiments.

Compared with the prior art, the method, the device, the equipment and the computer storage medium for determining the pilot frequency load balancing threshold provided by the embodiment of the application set the switching threshold value A4 switched from the serving cell to the target neighbor cell in a differentiated manner according to the overlapping coverage degree between the serving cell and different pilot frequency neighbor cells of the serving cell, so that the load balancing can be accurately realized, and the use perception of the UE after the balancing is executed is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a method for determining the pilot frequency load balancing threshold value a4 according to an embodiment of the present invention;

FIG. 2 shows a parametric diagram of MR data according to an embodiment of the invention;

fig. 3 is a parameter diagram illustrating a serving cell and four first neighboring cells with different frequency sampling points ranked in a higher proportion in MR data according to an embodiment of the present invention;

fig. 4 is a schematic parameter diagram illustrating a serving cell and three inter-frequency neighboring cells with high overlapping coverage with the serving cell in MR data according to an embodiment of the present invention;

fig. 5 is a diagram illustrating a relationship among the PHR values, the RSRP average values, and the number of RSRP sampling points of MR sampling points when a pilot frequency neighboring cell serves as a serving cell according to an embodiment of the present invention;

FIG. 6 shows a graph of the relationship of PHR values, RSRP mean values, and specific numerical values of the number of RSRP sample points of the MR sample points of FIG. 5 according to an embodiment of the invention;

fig. 7 is a schematic flowchart of a method for determining the inter-frequency threshold a2 and the handover threshold for handover from the target neighboring cell to the serving cell according to an embodiment of the present invention;

fig. 8 is a diagram illustrating a relationship between RSRP at sampling points of a serving cell and RSRP at corresponding sampling points of a target neighboring cell of the serving cell according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram illustrating an apparatus for determining a pilot frequency load balancing threshold according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram illustrating an apparatus for determining a pilot frequency load balancing threshold according to another embodiment of the present invention;

fig. 11 is a schematic structural diagram of an apparatus for determining a pilot frequency load balancing threshold according to another embodiment of the present invention;

fig. 12 is a block diagram illustrating an exemplary hardware architecture of a device for determining a pilot frequency load balancing threshold according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The embodiments will be described in detail below with reference to the accompanying drawings.

Currently, the 3rd Generation Partnership Project (3 GPP) specification plans two systems for Long Term Evolution (LTE), where a plurality of Frequency bands are allocated to each system, respectively, for Time Division Duplexing (TDD) and Frequency Division Duplexing (FDD).

As an example, in the LTE system for china mobile, the TDD spectrum used mainly includes three segments: the F frequency BAND (1880-1920MHz) belongs to BAND 39; the D frequency BAND (2570-2620MHz) belongs to BAND 38; the E BAND (2320-2370MHz) belongs to BAND 40. The frequency band F and the frequency band D are mainly used for outdoor coverage scenes, and the frequency band E is used for indoor coverage scenes.

In the above embodiment, the D band (2570 + 2620MHz) can be divided into three frequency points D1(2570 + 2590MHz), D2(2590 + 2610MHz), and D3(2610 + 2620 MHz). For the F band (2570-2620MHz), it can be divided into two frequency points F1(1880-1900MHz) and F2(1900-1920 MHz).

D1, D2, and D3 are different frequencies from each other, for example, D1, D2, and D3 are different frequencies; in addition, the pilot frequencies are also set between the frequency points D1, D2, D3 of the D band and the frequency points F1, F2 of the F band, for example, D1 and F1 are pilot frequencies, and D1 and F2 are pilot frequencies.

In an existing Time Division Long Term Evolution (TD-LTE) network, an outdoor macro base station uses an F, D frequency band, and due to the difference between the frequencies of the two, the F frequency band penetration loss of a lower frequency band is small, so that a user can easily stay in a cell of the F frequency band, and the service absorption of cells of the D frequency band and the F frequency band of a co-site is unbalanced. For example, in a city in a certain province, the resource utilization rate of the F band reaches 22%, while the resource utilization rate of the D band is only 7%, and in a hot spot area, the phenomenon of load imbalance between the F band and the D band cell is more serious.

Under the large background of the mobile internet, with the continuous and rapid increase of the number of users and the flow of the 4G network, the resource problem and the bottleneck of the LTE network become more and more prominent day by day, the rapid increase of high-load cells becomes a first problem, the problems of large number of cells, long time consumption of manual analysis and the like restrict the timely solution rate of the capacity problem for a long time. In order to improve the customer perception problem caused by the capacity problem, an objective and reasonable capacity solution is urgently needed to be researched. The problems of blind expansion, ineffective expansion, DF co-location cell flow unbalance and the like are avoided.

The condition of unbalanced load causes great influence on the use perception of the user, and for the user, the user resides in the F frequency band and cannot apply for enough wireless channel resources; for operators, D frequency band resources are idle, and the F frequency band with high utilization rate has no resource and capacity expansion due to frequency point limitation. Therefore, a method for load balancing the resources of the whole network is needed.

The existing load balancing method is based on UE measurement and reporting to select the best cell; or selecting the neighbor cell with the highest priority as the target neighbor cell. Therefore, selecting the target neighbor cell needs to be oriented to all neighbor cells, overlapping coverage between the serving cell and different neighbor cells is not considered, whether the target cell is a load balancing target cell is judged only by the cell with the strongest signal in the measurement report reported by the UE, and the existing method cannot accurately realize load balancing, so that the use perception of the UE after performing balancing cannot be guaranteed.

For better understanding of the present invention, the following describes the method for determining the pilot frequency load balancing threshold value a4 according to an embodiment of the present invention with reference to fig. 1 to 5.

Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for determining the pilot frequency load balancing threshold value a4 according to an embodiment of the present invention. The method includes the steps of S110, S120 and S130.

The event a4 indicates that the quality of the pilot frequency neighboring cell is higher than a preset threshold, and when cell information meeting the event trigger condition is reported, the source eNodeB starts a pilot frequency handover request.

S110, when the high-load cell is used as a service cell, according to the overlapping coverage degree between the service cell and the pilot frequency adjacent cells of the service cell, selecting the pilot frequency adjacent cells with high overlapping coverage degree with the service cell from the pilot frequency adjacent cells.

First, as an example, in S110, in order to perform load balancing on the entire network resources, a high-load cell is selected from all cells. For example, in a city, there are 14000 cells in total, and 2000 high load cells are selected from the 14000 cells. It should be noted that in the selection of the high load cell, the high load cell may be selected from, for example, a school, a village, or a city according to actual needs, and is not particularly limited herein.

The high-load cell is a cell determined based on the number of online users, the resource utilization rate and the flow. As an example, a high-load cell may refer to a cell in which the average number of online users reaches a user threshold, the uplink utilization rate reaches an uplink utilization rate threshold, and the uplink traffic reaches an uplink traffic threshold; or, the average number of online users reaches the user threshold, the downlink utilization rate reaches the downlink utilization rate threshold, and the downlink traffic reaches the cell of the downlink traffic threshold.

It should be noted that the user threshold, the utilization threshold, and the traffic threshold may be set according to actual conditions of each area, and are not specifically limited herein. As an example, a high load cell may be a cell that satisfies the following condition: average online user number >50, uplink utilization > 70% and uplink flow >500 Megabytes (MB); or, the average online user number is >50, the downlink utilization rate is > 70%, and the downlink traffic is >2 Gigabytes (GB).

It can be understood that the high-load cell may be a serving cell or a neighboring cell. Measurement Report (MR) data is collected, and Reference Signal Received Power (RSRP) and a Power Headroom Report (PHR) are extracted from the MR data.

In one embodiment of the invention, all MR data of a high-load cell is screened, and the sampling point proportion of a pilot frequency adjacent cell is obtained according to the sample number of all pilot frequency sampling points when the high-load cell is used as a service cell; arranging the sampling point proportion of the pilot frequency adjacent cells under the high-load cell from high to low, and screening the first n adjacent cells, wherein n is a positive integer which is more than 0 and less than or equal to 6.

As an example, referring to fig. 2, fig. 2 shows a parametric diagram of MR data according to an embodiment of the invention.

For example, as shown in fig. 2, the MR data includes six columns of data, wherein the first column of data in fig. 2 represents the serving cell MR sampling point RSRP in decibel-milliwatt (dBm); the second column of data represents the pilot frequency adjacent cell RSRP measured by the sampling point, and the unit is dBm; the third column of data represents the frequency points used by the serving cell; the fourth column of data represents the serving Cell Physical Cell Identity (PCI); the fifth row of data represents the frequency points used by the adjacent cells; the sixth column of data represents the neighbor PCI.

The RSRP is defined as a linear average of power of Resource Elements (REs) carrying cell-specific reference signals over a frequency band considered for measurement, and is a main index reflecting overlapping coverage of serving cells.

As an example, with continuing reference to fig. 2, the embodiment of the present invention determines a cell in a frequency point + PCI manner, which may be denoted as 38400-287 for a serving cell; the inter-frequency neighboring cell corresponding to the second row in fig. 2 can be represented as 37900-259.

For example, with reference to fig. 2, the sample ratios of all the inter-frequency neighboring cells under the serving cell 38400-287 in fig. 2 are arranged in order from high to low, and then the first n neighboring cells with the sample ratios ranked first are selected.

As an example, referring to fig. 3, fig. 3 is a schematic parameter diagram illustrating a serving cell and the first four neighboring cells with different frequency sampling points ranked in a top proportion in MR data according to an embodiment of the present invention.

All the inter-frequency neighbors under the serving cell 38400-287 shown in fig. 2 are sequentially arranged from high to low according to the sampling point proportion, so as to obtain four inter-frequency neighbors with the sampling point proportion ranking at the top, as shown in fig. 3, the obtained four inter-frequency neighbors are respectively: neighborhood 39300 neighborhood 127 neighborhood 37900 neighborhood 259 neighborhood 38950-39 neighborhood and neighborhood 39300-98 neighborhood. The higher the sampling number is, the higher the frequency of the pilot frequency adjacent cell is, and the higher the proportion of sampling points is.

It should be noted that, in the above embodiment, the first four neighboring cells with different-frequency sampling points ranked at the top in proportion are selected, which can meet the requirement of the present invention. In a specific application, the first n neighboring cells with high overlapping coverage with the serving cell may be selected, where n is a positive integer greater than 0 and less than or equal to 6. The number of pilot frequency adjacent cells with high sampling point ratio can be determined according to actual conditions, and is not specifically limited herein.

Next, calculating the difference value between the RSRP of the pilot frequency sampling points of the first n pilot frequency adjacent cells and the RSRP of the corresponding sampling points of the serving cell; and selecting k adjacent cells from the previous n adjacent cells as pilot frequency adjacent cells with high overlapping coverage degree according to the difference, wherein k is a positive integer less than or equal to n.

It can be understood that, from all the inter-frequency neighboring cells under the serving

cells

38400 and 287 in fig. 2, a neighboring cell with high overlapping coverage with the serving cell is selected. The overlapping coverage is related to the sampling point ratio of the pilot frequency adjacent cell, and is also related to the difference value between the RSRP of the MR sampling point of the service cell and the RSRP of the corresponding sampling point of the pilot frequency adjacent cell.

In other words, the higher the proportion of the sampling points of the pilot frequency adjacent cell under the serving cell is, and the higher the difference between the RSRP of the sampling point of the MR of the serving cell and the RSRP of the corresponding sampling point of the pilot frequency adjacent cell meets the requirement of the preset threshold, the higher the overlapping coverage is.

In the embodiment of the invention, after the first n pilot frequency adjacent cells with the sampling points ranked at the front proportion are selected from all the pilot frequency adjacent cells, the difference value between the RSRP of the sampling point of the service cell and the RSRP of the corresponding sampling point of each of the first n pilot frequency adjacent cells is calculated respectively.

When the difference value is smaller than a preset threshold value, the requirement of overlapping coverage degree between the service cell and the pilot frequency adjacent cell is met; when the difference is greater than the preset threshold value, it indicates that the requirement of overlapping coverage is not met between the serving cell and the pilot frequency neighboring cells, so the pilot frequency neighboring cells which do not meet the requirement should be removed from the first n neighboring cells, thereby obtaining k pilot frequency neighboring cells with high overlapping coverage with the serving cell.

As an example, referring to fig. 2 and fig. 3, the difference between the RSRP of the samples of the serving cell 38400-287 and the RSRP of the corresponding sample of each of the selected four inter-frequency neighboring cells is respectively calculated, and it is determined whether each difference is smaller than the preset threshold.

The difference value between the RSRP of the MR sampling point of the serving cell 38400-287 and the RSRP of the corresponding sampling point of the pilot frequency adjacent cell 39300-127 is 9 dBm;

the difference value between the RSRP of the MR sampling points of the serving cell 38400-287 and the RSRP of the MR sampling points of the pilot frequency neighboring cell 37900-259 is 11 dBm;

the difference value between the RSRP of the MR sampling points of the serving cell 38400-287 and the RSRP of the MR sampling points of the pilot frequency adjacent cells 38950-39 is 10 dBm;

the difference between the RSRP of the MR samples of serving cell 38400-287 and the RSRP of the MR samples of inter-frequency neighbors 39300-98 is 17 dBm.

As an example, referring to fig. 3 and fig. 4, fig. 4 is a schematic parameter diagram illustrating a serving cell and three inter-frequency neighboring cells with high overlapping coverage with the serving cell in MR data according to an embodiment of the present invention.

Three pilot frequency adjacent cells which meet the requirement of high overlapping coverage with the service cell are obtained by eliminating the pilot frequency adjacent cells which have the difference value between the RSRP of the sampling point of the service cell and the RSRP of the sampling point of the adjacent cell in the pilot frequency adjacent cells shown in figure 3 and do not meet the requirement of a preset threshold value, as shown in figure 4.

In the embodiment of the present invention, the predetermined threshold is 15 dBm. Wherein, the difference value 9dBm, the difference value 11dBm and the difference value 10dBm are all smaller than the preset threshold value 15dBm, which can meet the requirement, namely the adjacent regions 39300-; and the difference value 17dBm is greater than the preset threshold value 15dBm, so that the pilot frequency adjacent cells 39300-98 do not meet the requirement of overlapping coverage with the serving cell, and the pilot frequency adjacent cells 39300-98 should be removed from the four pilot frequency adjacent cells with high sampling point ratios shown in fig. 3. Therefore, three inter-frequency neighboring cells satisfying the requirement of overlapping coverage with the serving cell as shown in fig. 4 can be obtained.

It should be noted that, when the difference between the RSRP of the MR sampling point of the serving cell and the RSRP of the corresponding sampling point of the pilot frequency neighboring cell of the serving cell is smaller than the preset threshold, the serving cell and the pilot frequency neighboring cell are considered to be overlapped. It should be noted that the setting of the preset threshold value may be set according to local practical conditions, and is not limited herein.

For example, when the difference value between the RSRP of the MR sampling point of the serving cell and the RSRP of the corresponding sampling point of the pilot frequency neighboring cell of the serving cell is less than 6dBm, the serving cell and the neighboring cell are considered to meet the requirement of overlapping coverage; when the requirement is higher, the preset threshold value can be 3dBm, namely when the difference value between the RSRP of the sampling point of the MR of the service cell and the RSRP of the corresponding sampling point of the pilot frequency adjacent cell of the service cell is less than 3dBm, the service cell and the adjacent cell are considered to meet the requirement of overlapping coverage; when the requirement is relatively low, the preset threshold value can also be 9 dBm.

It should be noted that the four inter-frequency neighbors shown in fig. 3 with a high proportion of sample points, and the first 3 inter-frequency neighbors shown in fig. 4 that satisfy the requirement of overlapping coverage with the serving cell, are merely exemplary and are not intended to limit the present invention.

And S120, determining a target adjacent cell in the pilot frequency adjacent cells with high overlapping coverage based on the sampling point of the pilot frequency adjacent cell in the service cell.

In one embodiment of the invention, in the pilot frequency adjacent cell with high overlapping coverage, the pilot frequency adjacent cell is determined as a target adjacent cell according to the sequence of the sampling point proportion from high to low according to the coverage requirement, and the sampling point proportion is data obtained according to the sampling points.

Specifically, the pilot frequency adjacent cells meeting the coverage requirement are selected from k pilot frequency adjacent cells, the pilot frequency adjacent cells meeting the coverage requirement are arranged according to the sequence of the proportion of sampling points from high to low, and the pilot frequency adjacent cell with the highest proportion of the sampling points in the pilot frequency adjacent cell meeting the coverage requirement is taken as a target adjacent cell.

Wherein, the coverage requirement comprises that the ratio of the number of sampling points with PHR less than zero to the number of sampling points with PHR greater than zero is less than the coverage threshold value.

Wherein, PHR is defined as UE reporting Power Headroom (PH) to the network side.

And, a Power Headroom (PH) is a difference between a maximum transmission Power allowed by the UE and a currently estimated transmission Power of a Physical Uplink Shared Channel (PUSCH), and the PH can be expressed by a formula:

PH＝UEAllowedMaxTransPower-PuschPower。 (1)

wherein, the UE allowedmaxtranspower represents the maximum transmission power allowed by the UE, and the PuschPower represents the currently estimated Pusch transmission power. The PH indicates how much transmission power the UE can use in addition to the transmission power used for the current PUSCH transmission. The unit of PH is dB, the range is [ -23dB, +40dB ], if it is negative, it means that the network side schedules a data transmission rate to the UE, which is higher than the available transmission power at the time can support.

It should be noted that, since the "estimated PUSCH transmission power (i.e., PUSCH power)" is calculated, the value of the PUSCH transmission power is not limited by the maximum transmission power of the UE, and is not the actual transmission power of the UE, and may exceed the "maximum transmission power allowed by the UE", so the value of PH may be a negative number. When the PH value is a positive number, it indicates that the UE has an excess transmission power available in addition to the transmission power used for the current PUSCH transmission. When the PH value is negative, it indicates that the current PUSCH transmission power has exceeded the maximum transmission power allowed by the UE.

Continuing to refer to fig. 4, whether the three pilot frequency adjacent cells 39300-127, 37900-259 and 38950-39 in fig. 4 meet the coverage requirement is calculated respectively, the pilot frequency adjacent cells meeting the coverage requirement are selected from the three pilot frequency adjacent cells, the pilot frequency adjacent cells meeting the coverage requirement are arranged from high to low according to the proportion of the sampling points, and the adjacent cells meeting the coverage requirement and having the highest proportion of the sampling points are the target adjacent cells. For example, if the three different-frequency neighboring cells in fig. 4 all satisfy the coverage requirement, since the sampling point ratio of the different-frequency neighboring cell 39300-127 is the highest among the three different-frequency neighboring cells, the different-frequency neighboring cell 39300-127 can be used as the target neighboring cell.

As an example, the PHR and RSRP values of the sampling points when the inter-frequency neighboring cell 39300-127 is used as the serving cell are extracted. As shown in fig. 5, fig. 5 is a graph illustrating a relationship among the PHR value, the RSRP average value, and the number of RSRP sampling points of the MR sampling points when the inter-frequency neighboring cell 39300-127 is used as the serving cell according to an embodiment of the present invention.

Referring to fig. 5, the abscissa in fig. 5 is the PHR value, the curve in fig. 5 is the RSRP average value corresponding to the PHR value, and the column in fig. 5 is the number of RSRP sampling points corresponding to each value interval of the PHR.

Firstly, it should be determined whether the coverage rate can meet the coverage rate requirement when the different-frequency neighboring cell 39300-127 is used as the serving cell, and the ratio between the number of sampling points corresponding to PHR <0 and the number of sampling points corresponding to PHR >0 when the different-frequency neighboring cell 39300-127 is used as the serving cell is calculated, and the formula is as follows:

if the Rate1 is lower than the preset threshold, it is determined that the coverage Rate can meet the coverage Rate requirement when the inter-frequency neighboring cell 39300-127 is used as the serving cell, where the preset threshold may be set according to an actual situation, and is not specifically limited herein.

Referring to fig. 5 and 6, fig. 6 is a graph showing a relationship among specific values of the PHR value, the RSRP average value, and the RSRP sample point number of the MR sample point of fig. 5 according to an embodiment of the present invention.

Referring to fig. 6, the first column of data in fig. 6 is the PHR value, and the unit is dB; the second column of data is the number of RSRP sampling points; the third column of data is the RSRP average in dBm.

As an example, with continued reference to fig. 5 and 6, when the PHR span is [ -23, -22], the corresponding number of RSRP sample points is 28.

It can be seen from fig. 5 and fig. 6 that the number of sampling points corresponding to PHR <0 is significantly smaller than the number of sampling points corresponding to PHR >0, which indicates that the number of sampling points corresponding to PHR >0 is majority, that is, when the inter-frequency neighboring cell 39300-. In the embodiment of the present invention, when the inter-frequency neighboring cell 39300-127 serves as the serving cell, the Rate1 may satisfy the requirement of the predetermined threshold. Therefore, when the inter-frequency neighboring cell 39300-127 is used as a serving cell, the coverage rate can meet the coverage rate requirement. Because the sampling point proportion of the different-frequency neighboring cell 39300-127 in the three different-frequency neighboring cells with high overlapping coverage is the highest, the different-frequency neighboring cell 39300-127 can be used as a target neighboring cell.

The method for selecting the target neighbor cell from the pilot frequency neighbor cells with high overlapping coverage with the service cell in the embodiment of the invention comprises the following steps: selecting the first n adjacent cells with high sampling point proportion from all the pilot frequency adjacent cells under the service cell; selecting k pilot frequency adjacent cells of which the difference value between the RSRP of the sampling point of the service cell and the RSRP of the sampling point of the pilot frequency adjacent cell meets the requirement of a preset difference threshold from the first n adjacent cells, and taking the k pilot frequency adjacent cells as the pilot frequency adjacent cells with high overlapping coverage with the service cell; and then selecting a target adjacent cell which meets the requirement of coverage rate and has the highest sampling point proportion in the pilot frequency adjacent cells meeting the requirement of coverage rate from the k pilot frequency adjacent cells. The embodiment of the invention fully considers the overlapping coverage degree between the service cell and the different pilot frequency adjacent cells, and selects the target adjacent cell from the pilot frequency adjacent cells with high overlapping coverage degree without selecting the target adjacent cell from all the adjacent cells, thereby greatly improving the accuracy of the selected target adjacent cell and further avoiding selecting the target adjacent cell which does not meet the requirement.

S130, collecting Reference Signal Received Power (RSRP) of MR sampling points when the target neighboring cell serves as a service cell, and taking the RSRP as a switching threshold value A4.

In the current load balancing method, a uniformly set threshold is adopted for a switching threshold value A4 from a serving cell to a target adjacent cell, and the coverage performance and interference conditions of the serving cell and different adjacent cells are not referred to. However, according to the uniform handover threshold value a4, it may not be possible to balance the traffic from the serving cell to the target cell in time; or, the target neighbor cell is balanced from the serving cell too quickly, which may cause handover to an inappropriate target neighbor cell, and the terminal reselects the target neighbor cell, which may cause frequent handover, and since the handover in LTE is a hard handover, the user perception may be affected by the frequent handover.

In an embodiment of the present invention, PHR values of all MR sampling points when a target neighboring cell is used as a serving cell are collected, and according to a correspondence between the PHR and the RSRP, the RSRP corresponding to the PHR is used as a switching threshold a 4.

It should be noted that the handover threshold a4 is a handover threshold for handover from the serving cell to the inter-frequency neighboring cell, and the handover is performed only when the RSRP value of the sampling point of the inter-frequency neighboring cell measured by the UE is greater than the handover threshold a 4.

As an example, with continued reference to FIGS. 5 and 6, when the PHR takes the value-23 dB, the corresponding RSRP averages-105.964286 dBm.

And according to the principle of reserved redundancy, reserving 3dB redundancy on the basis of PHR (0), and determining the corresponding RSRP value when PHR is 3 dB. Referring to fig. 6, when PHR is 3dB, RSRP is-98 dBm, and RSRP is-98 dBm, which is used as a handover threshold value a4 for performing handover from the serving cell to the target neighbor cell. That is, when the RSRP value of the target neighboring cell exceeds the threshold value a4, the serving cell may perform handover to the target neighboring cell.

It should be noted that the redundancy size reserved on the basis of PHR ═ 0 may be set according to practical situations, and is not particularly limited herein. The reserved 3dB redundancy in the above embodiments is merely exemplary and is not intended to limit the present invention.

Therefore, according to the method for determining the pilot frequency load balancing threshold a4 in the embodiment of the present invention, the handover threshold a4 for handover from the serving cell to the target neighbor cell is set differently according to the overlapping coverage between the serving cell and different pilot frequency neighbor cells of the serving cell, and the overlapping coverage and interference between the serving cell and the different pilot frequency neighbor cells of the serving cell are fully considered, and compared with the uniformly set threshold a4, the handover threshold a4 for handover from the serving cell to the target neighbor cell can be set accurately in the embodiment of the present invention.

The existing load balancing method adopts a uniformly set threshold for the pilot frequency start measurement threshold value A2. In this case, since the overlapping coverage between the serving cell and the different inter-frequency neighboring cells is not considered, the unified setting of the inter-frequency start threshold value a2 is inaccurate. It may result in the threshold value a2 being set too high or too low. Wherein, when the RSRP value of the sampling point of the service cell is lower than a threshold value A2, the pilot frequency measurement is started.

The event a2 indicates that the quality of the pilot frequency neighboring cell is higher than a preset threshold, and when cell information meeting the event trigger condition is reported, the source eNodeB starts a pilot frequency handover request.

When the threshold value A2 is set too low, slow triggering can be caused, and pilot frequency measurement cannot be triggered in time; when the threshold value a2 is set too high, this may result in premature initiation of inter-frequency measurements. When the UE measures the pilot frequency point, the UE can greatly occupy system resources, and if the pilot frequency measurement is started too early, uploading and downloading rates and the like can be influenced. Therefore, it is generally desirable that the UE starts inter-frequency measurement as short as possible before performing inter-frequency handover, so as to reduce consumption of system resources by the inter-frequency measurement and improve the measurement rate.

Therefore, the pilot frequency threshold value a2 should not be set too large or too small. In order to solve the above problem, according to the overlapping coverage between the serving cell and the different pilot frequency neighboring cells of the serving cell, the switching threshold value a4 is first calculated, and the pilot frequency start measurement threshold value a2 is calculated according to the switching threshold value a4, so that the size of the threshold value a2 is reasonably set.

For ease of understanding, the method for determining the pilot frequency threshold value a2 is described below with reference to fig. 7 and 8.

Fig. 7 is a schematic flowchart illustrating a method for determining the inter-frequency threshold a2 and the handover threshold for handover from the target neighboring cell to the serving cell according to an embodiment of the present invention.

S710, calculating an average Av1 of differences between RSRPs of all MR sampling points of the current service cell and RSRPs of MR sampling points corresponding to a target adjacent cell of the current service cell; and taking the sum of the switching threshold value A4 and the preset offset and average value Av1 of the current serving cell as the pilot frequency start measuring threshold value A2 of the current serving cell.

As an example, in S710, in order to prevent the pilot frequency measurement from being started prematurely, the pilot frequency start measurement threshold value a2 obtained by adding the handover threshold value a4 obtained in S130, the preset offset of the current serving cell and the average value Av1 is obtained. The pilot frequency start-up threshold value A2 of the serving cell can be close to the RSRP of the MR sampling point of the serving cell as much as possible, so that the pilot frequency start-up threshold value A2 is prevented from being set too high, and pilot frequency measurement is prevented from being started too early.

Fig. 8 is a diagram illustrating a relationship between RSRP at sampling points of a serving cell and RSRP at corresponding sampling points of a target neighboring cell of the serving cell according to an embodiment of the present invention.

Referring to fig. 8, all MR sampling points of the current serving cell are extracted, the abscissa is the number of MR sampling points, the MR sampling points are sorted from strong to weak according to the RSRP value of the serving cell, a curve 1 is the RSRP of the sampling point of the current serving cell, a curve 2 is the RSRP of the sampling point corresponding to the target neighboring cell in the current serving cell, and the sampling points below-120 dBm are removed. It can be seen that the RSRP of the current sampling point of the serving cell and the RSRP of the corresponding sampling point of the target neighboring cell are kept substantially uniform, the difference between the RSRP of the current sampling point of the serving cell and the RSRP of the corresponding sampling point of the target neighboring cell is calculated, and then the average value Av1 of the difference is calculated.

The handover threshold value a4 calculated in S130, the serving cell (Serv1) preset Offset value, and the average value Av1 described above are added, i.e., a4+ Av1+ Offset _ a2(Serv1), and the resulting sum is used as the inter-frequency start threshold value a2 at which the serving cell starts inter-frequency measurement.

As an example, in S710, in actual operation, a preset Offset value Offset _ a2(Serv1) may be preset according to the load condition of the serving cell, and the formula is as follows:

A2＝A4+Av1+Offset_A2(Serv1) (3)

in the embodiment of the present invention, a4 ═ 98dBm, Av1 ═ 11dB, Offset _ a2(Serv1) is set to 4dB, and it is possible to obtain:

A2＝A4+Av1+Offset_A2(Serv1)＝-98+11+4＝-83dBm

it should be noted that, in the above-described embodiment, Offset _ a2(Serv1) ═ 4dB is merely exemplary, and is not intended to limit the present invention. The value of the Offset value Offset _ a2 of the serving cell may be set according to actual conditions, and is not particularly limited herein.

According to the method for determining the pilot frequency start-up threshold value A2, the switching threshold value A4 is calculated according to the overlapping coverage degree between the service cell and different pilot frequency adjacent cells of the service cell, then the pilot frequency start-up threshold value A2 is determined according to the switching threshold value A4, and the threshold value A4, the average value Av1 and the preset Offset value Offset _ A2(Serv1) are added, so that the threshold value A2 is set more accurately and reasonably.

The existing load balancing method may quickly switch back to the original serving cell after the serving cell balances the service to the target neighbor cell, thereby causing a ping-pong effect.

And S720, taking the sum of the switching threshold value A4, the preset bias of the target adjacent cell and the threshold value A3 as the switching threshold value for switching the target adjacent cell to the serving cell.

The event a3 indicates that the quality of the co-frequency/inter-frequency neighboring cell is higher than the quality of the serving cell by a preset threshold, and when the cell information meeting the event trigger condition is reported, the source eNodeB starts a co-frequency/inter-frequency handover request.

It should be noted that different thresholds and other parameters of the event may be configured according to different QoS Class Identifiers (QCIs).

As an example, in S720, in order to avoid that the service is balanced to the target neighboring cell (Nc1) and then is quickly switched back to the original serving cell, the handover policy from the target neighboring cell to the original serving cell is set to a2+ A3, and the inter-frequency start measurement threshold value a2 is determined according to the handover threshold value a4 determined by the correspondence between the PHR and the RSRP, and the threshold value A3 is set according to a conventional default value, that is, A3 is 3 dB.

As an example, on the basis of the switching threshold value a4(Nc1) — 98dBm calculated in S130, in combination with a preset offset: offset _ a2(Nc1) is 4 dB; as can be seen, a2 ═ a4(Nc1) + Offset _ a2(Nc1) — 98dBm +4dB — 94 dBm;

a3 ═ 3dB (conventional default);

it should be noted that the threshold values A3 and Offset _ a2(Nc1) may be set according to practical situations, and are not limited herein. In the above embodiments, A3 of 3dB and Offset _ a2(Nc1) of 4dB are merely exemplary and are not intended to limit the present invention.

Therefore, according to the method for determining the handover threshold from the target neighboring cell to the original serving cell in the embodiment of the present invention, by fully considering the overlapping coverage between the serving cell and the different inter-frequency neighboring cells of the serving cell, the handover threshold a4 is first calculated, and then the preset Offset _ a2(Nc1) and the threshold A3 are combined, so as to prevent frequent handover caused by fast handover back to the original serving cell after the serving cell is handed over to the target neighboring cell, thereby improving user perception.

It should be noted that the order between S710 and S720 may be reversed, i.e., S720 may be performed first and then S710, and the order shown in fig. 7 is merely exemplary and not intended to be limiting.

The positioning apparatus of the user equipment according to the embodiment of the present invention is described in detail below with reference to fig. 9 to 11.

Fig. 9 is a schematic structural diagram illustrating an apparatus for determining a pilot frequency load balancing threshold according to an embodiment of the present invention. As shown in fig. 9, the positioning apparatus 900 of the user equipment includes:

a selecting module 910, configured to select, when a high-load cell serves as a serving cell, a pilot frequency neighboring cell with high overlapping coverage with the serving cell from the pilot frequency neighboring cells according to overlapping coverage between the serving cell and the pilot frequency neighboring cells of the serving cell.

A target neighboring cell determining module 920, configured to determine a target neighboring cell in the inter-frequency neighboring cells with high overlapping coverage based on the sampling point of the inter-frequency neighboring cell in the serving cell.

The first threshold determining module 930 is configured to acquire reference signal received power RSRP of a measurement report MR sampling point when a target neighboring cell serves as a serving cell, and use the RSRP as a handover threshold value a 4.

In some embodiments, the selecting module 910 is specifically configured to: screening all MR data of the high-load cell, and obtaining the sampling point proportion of the pilot frequency adjacent cell according to the sample number of all pilot frequency sampling points when the high-load cell is used as a service cell; arranging the sampling point proportion of the pilot frequency adjacent cells under the high-load cell from high to low, and screening the first n pilot frequency adjacent cells, wherein n is a positive integer which is more than 0 and less than or equal to 6; calculating the difference value between the RSRP of the pilot frequency sampling points of the first n pilot frequency adjacent cells and the RSRP of the corresponding sampling points of the serving cell; and selecting k adjacent cells from the previous n adjacent cells as pilot frequency adjacent cells with high overlapping coverage degree through the difference, wherein k is a positive integer less than or equal to n.

In some embodiments, the target neighboring cell determining module 920 is specifically configured to: and in the pilot frequency adjacent cells with high overlapping coverage, determining the pilot frequency adjacent cells as target adjacent cells according to the sequence of the sampling point proportion from high to low through the coverage rate requirement, wherein the sampling point proportion is data obtained according to the sampling points.

In the above embodiment, the coverage requirement includes: the ratio of the number of sampling points for which the power headroom report PHR is less than zero to the number of sampling points for which the PHR is greater than zero is less than a coverage threshold.

In some embodiments, the first threshold determining module 930 is specifically configured to: collecting PHRs of all MR sampling points when a target adjacent cell serves as a service cell, and taking the RSRP corresponding to the PHRs as a switching threshold value A4 according to the corresponding relation between the PHRs and the RSRP.

By the device for determining the pilot frequency load balancing threshold provided by the embodiment of the invention, the switching threshold value A4 for switching the serving cell to the target neighbor cell is accurately set according to the overlapping coverage degree between the serving cell and different pilot frequency neighbor cells of the serving cell, so that the load balancing can be accurately realized, and the use perception of the UE after the balancing is executed is ensured.

Fig. 10 is a schematic structural diagram illustrating an apparatus for determining a pilot frequency load balancing threshold according to another embodiment of the present invention. The same modules or units in fig. 10 and fig. 9 are numbered the same, and as shown in fig. 10, the positioning apparatus 1000 of the user equipment is substantially the same as the positioning apparatus 900 of the user equipment shown in fig. 9, except that the positioning apparatus 1000 of the user equipment further includes:

a second threshold determining module 940, configured to calculate an average Av1 of differences between RSRPs of all MR sampling points of the current serving cell and RSRPs of MR sampling points corresponding to a target neighboring cell of the current serving cell; and taking the sum of the switching threshold value A4 and the preset offset and average value Av1 of the current serving cell as the pilot frequency start measuring threshold value A2 of the current serving cell.

By the device for determining the pilot frequency load balancing threshold provided by the embodiment of the invention, the pilot frequency start measurement threshold value A2 is accurately set according to the overlapping coverage degree between the service cell and different pilot frequency adjacent cells of the service cell, so that the load balancing can be accurately realized, and the use perception of the UE after the balancing is executed is further ensured.

Fig. 11 is a schematic structural diagram of an apparatus for determining a pilot frequency load balancing threshold according to yet another embodiment of the present invention. The same modules or units in fig. 11 and fig. 10 are numbered the same, and as shown in fig. 11, the positioning apparatus 1100 of the ue is substantially the same as the positioning apparatus 1000 of the ue shown in fig. 10, except that the positioning apparatus 1100 of the ue further includes:

a third threshold determining module 950, configured to use a sum of the handover threshold value a4, the preset bias of the target neighboring cell, and the threshold value A3 as a handover threshold value for the target neighboring cell to switch to the serving cell.

In the above embodiment, the high load cell includes: the cell with the average online user number reaching the user threshold, the uplink utilization rate reaching the uplink utilization rate threshold and the uplink flow reaching the uplink flow threshold; or, the average number of online users reaches the user threshold, the downlink utilization rate reaches the downlink utilization rate threshold, and the downlink traffic reaches the cell of the downlink traffic threshold.

By the device for determining the pilot frequency load balancing threshold provided by the embodiment of the invention, the switching threshold value switched from the target neighbor cell to the service cell is accurately set according to the overlapping coverage degree between the service cell and different pilot frequency neighbor cells of the service cell, so that the load balancing can be accurately realized, and the use perception of the UE after the balancing is executed is further ensured.

Other details of the apparatus for determining a pilot frequency load balancing threshold according to the embodiment of the present invention are similar to the method for determining a pilot frequency load balancing threshold according to the embodiment of the present invention described above with reference to fig. 1 to 8, and will not be described herein again.

In addition, the method for determining the pilot frequency load balancing threshold according to the embodiment of the present invention described in conjunction with fig. 1 to 8 may be implemented by a device for determining the pilot frequency load balancing threshold. Fig. 12 is a block diagram illustrating an exemplary hardware architecture of a device for determining a pilot frequency load balancing threshold according to an embodiment of the present invention.

The pilot frequency load balancing threshold determining apparatus 1200 may include a processor 1203 and a memory 1204 having stored thereon computer program instructions.

Fig. 12 is a block diagram illustrating an exemplary hardware architecture of a determining device capable of implementing a communication method and a pilot load balancing threshold of a network server according to an embodiment of the present invention. As shown in fig. 12, the determination device 1200 includes an input device 1201, an input interface 1202, a processor 1203, a memory 1204, an output interface 1205, and an output device 1206.

The input interface 1202, the processor 1203, the memory 1204, and the output interface 1205 are connected to each other through the bus 1210, and the input device 1201 and the output device 1206 are connected to the bus 1010 through the input interface 1202 and the output interface 1205, respectively, and further connected to other components of the determination device 1200.

Specifically, the input device 1201 receives input information from the outside and transmits the input information to the processor 1203 via the input interface 1202; the processor 1203 processes the input information based on computer-executable instructions stored in the memory 1204 to generate output information, temporarily or permanently stores the output information in the memory 1204, and then transmits the output information to the output device 1206 via the output interface 1205; the output device 1206 outputs the output information to the outside of the determination device 1200 for use by the user.

The determination device 1200 may perform each step in the communication method described above in the present application.

The processor 1203 may be one or more Central Processing Units (CPUs). When the processor 1203 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory 1204 may be, but is not limited to, one or more of Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), compact disc read only memory (CD-ROM), a hard disk, and the like. The memory 1204 is used for storing program codes.

It is understood that, in the embodiment of the present application, the functions of any one or all of the modules provided in fig. 9 to 11 may be implemented by the processor 1203 shown in fig. 12.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for determining a threshold for pilot frequency load balancing, comprising:

collecting Reference Signal Received Power (RSRP) of a Measurement Report (MR) sampling point when the target neighboring cell serves as a service cell, and taking the RSRP as a switching threshold value A4;

the acquiring RSRP of the MR sampling point when the target neighboring cell serves as the serving cell, and using the RSRP as a switching threshold value a4 includes:

collecting PHRs of all MR sampling points when the target adjacent cell serves as a service cell, and taking the RSRP corresponding to the PHRs as a switching threshold value A4 according to the corresponding relation between the PHRs and the RSRP;

the pilot frequency adjacent cell with high overlapping coverage with the service cell comprises: and the overlapping coverage degrees of the pilot frequency adjacent cells and the service cell are sorted from large to small, the first k pilot frequency adjacent cells are sorted, and k is an integer larger than 0.

2. The method of claim 1, wherein the selecting, from the inter-frequency neighboring cells according to the overlapping coverage between the serving cell and the inter-frequency neighboring cells of the serving cell, an inter-frequency neighboring cell with a high overlapping coverage with the serving cell comprises:

calculating the difference value between the RSRP of the pilot frequency sampling points of the first n pilot frequency adjacent cells and the RSRP of the corresponding sampling points of the service cell;

and selecting k adjacent cells from the previous n adjacent cells as the pilot frequency adjacent cells with high overlapping coverage degree according to the difference, wherein k is a positive integer less than or equal to n.

3. The method of claim 1, wherein the determining a target neighbor cell in the inter-frequency neighbor cells with high overlapping coverage based on the sampling points of the inter-frequency neighbor cells in the serving cell comprises:

and in the pilot frequency adjacent cell with high overlapping coverage, determining the pilot frequency adjacent cell as a target adjacent cell according to the sequence of the sampling point proportion from high to low according to the coverage requirement, wherein the sampling point proportion is data obtained according to the sampling points.

4. The method of claim 3, wherein the coverage requirement comprises a ratio of a number of sampling points for which a Power Headroom Report (PHR) is less than zero to a number of sampling points for which the PHR is greater than zero being less than a coverage threshold.

5. The method of claim 1, wherein the acquiring the RSRP of the MR sampling points when the target neighboring cell is the serving cell, and after taking the RSRP as a switching threshold a4, further comprises:

and taking the sum of the switching threshold value A4, the preset bias of the current serving cell and the average value Av1 as a pilot frequency start measurement threshold value A2 of the current serving cell.

6. The method as claimed in claim 5, wherein the step of adding the handover threshold value A4, the preset offset of the current serving cell and the average value Av1 as the pilot frequency start threshold value A2 of the current serving cell further comprises:

and taking the sum of the switching threshold value A4, the preset bias of the target neighboring cell and the threshold value A3 as the switching threshold value for switching the target neighboring cell to the serving cell.

7. The method of claim 1, wherein the high-load cell comprises:

alternatively, the first and second electrodes may be,

8. An apparatus for determining a threshold for pilot frequency load balancing, comprising:

a selecting module, configured to select a pilot frequency neighboring cell with a high overlapping coverage with a serving cell from the pilot frequency neighboring cells according to an overlapping coverage between the serving cell and the pilot frequency neighboring cells of the serving cell when a high-load cell serves as the serving cell;

a target neighboring cell determining module, configured to determine a target neighboring cell in the pilot frequency neighboring cells with high overlapping coverage based on a sampling point of the pilot frequency neighboring cell in the serving cell;

a first threshold determining module, configured to acquire reference signal received power RSRP of a measurement report MR sampling point when the target neighboring cell serves as a serving cell, and use the RSRP as a handover threshold value a 4;

the first threshold determining module is specifically configured to acquire PHR of all MR sampling points when the target neighboring cell serves as a serving cell, and use RSRP corresponding to the PHR as a switching threshold value a4 according to a correspondence between the PHR and the RSRP;

9. An apparatus for determining a pilot frequency load balancing threshold, the apparatus comprising: a processor and a memory storing computer program instructions;

the processor, when executing the computer program instructions, implements a method for determining a pilot frequency load balancing threshold according to any one of claims 1 to 7.

10. A computer storage medium having computer program instructions stored thereon, which when executed by a processor implement the method for determining a pilot frequency load balancing threshold according to any one of claims 1 to 7.