CN108064075A - The method and apparatus of the reference signal transmission power of the one or more cells of adjustment - Google Patents

Abstract

Provided are a method and a device for adjusting reference signal transmission power of one or more cells. The method includes: acquiring the measurement report, cell flow, and reference signal received power of each cell in the target geospatial area, where the target geospatial area is divided into a plurality of three-dimensional spatial grids; determining the reference signal receiving power in the target geospatial area One or more cells whose power is less than the power threshold; based on the measurement report of the one or more cells, determine the three-dimensional spatial grid to which the one or more cells belong; for any one of the one or more cells, based on The signal coverage and traffic coverage of each three-dimensional spatial grid to which the cell belongs determine an adjustment scheme for the transmission power of the reference signal of the cell. For any three-dimensional spatial grid, its signal coverage and traffic coverage are respectively associated with the reference signal received power and cell traffic of each cell belonging to it.

Description

Method and device for adjusting reference signal transmission power of one or more cells

technical field

The present invention relates to the communication field, and more particularly relates to a method and a device for adjusting reference signal transmission power of one or more cells.

Background technique

With the popularization of mobile Internet and smart terminals, data services in Time Division Long Term Evolution (TD-LTE) networks are experiencing explosive growth, which poses higher demands on the network performance of TD-LTE networks. Require. At the network level, more services mean that more network resources are needed; at the same time, "mobility" is an inherent characteristic of wireless networks, which determines that wireless networks are dynamically changing networks, and the services in them show obvious "tidal waves". effect,” for example, business in a business district moves with commuters, and business on a college campus moves with students moving between classrooms and dorms.

However, within a relatively short period of time (for example, 1 day or 1 hour), the deployment of network resources in the TD-LTE network is fixed. In order to adapt to the dynamic changes of the network, provide stable network quality and even improve the network quality, it is necessary to constantly adjust the network structure. The adjustment of the network structure is mainly the adjustment of the antenna feed parameters, for example, the azimuth angle, the downtilt angle of the antenna, and the transmission power of a reference signal (Reference Signal, RS for short).

RS transmit power is an important resource parameter of a cell in a TD-LTE network, which determines the coverage and interference of the cell. The setting of RS transmit power is generally derived from planning parameters in the early stage, and is mainly adjusted through optimization analysis in the later stage. Generally, the process of adjusting the RS transmission power of one or more cells in the target geographic area includes the following steps: 1) collecting measurement report (Measurement Report, MR for short) data and network performance index data including each cell in the target geographic area , data sources of drive test/dial test data, alarm data, complaint data, etc.; 2) through the analysis of data sources, find sub-areas with problems in network coverage and interference, and locate problematic cells in these sub-areas; 3 ) Formulate and implement an adjustment plan for the RS transmission power of each problematic cell based on manual experience; 4) During the adjustment process, dispatch vehicles, personnel, instruments, etc. to perform a cycle of "adjustment-test verification-adjustment..." process.

Contents of the invention

The present invention provides a novel method and device for adjusting the reference signal transmission power of one or more cells.

The method for adjusting the reference signal transmit power of one or more cells according to an embodiment of the present invention includes: obtaining the measurement report, cell traffic, and reference signal received power of each cell in the target geographic space area, wherein the target geographical space area Divided into a plurality of three-dimensional spatial grids; determining one or more cells whose reference signal received power in the target geographic space area is less than a power threshold; based on the measurement reports of the one or more cells, determining where the one or more cells are The assigned three-dimensional spatial grid; and for any one of the one or more cells, based on the signal coverage and traffic coverage of each three-dimensional spatial grid to which the cell belongs, determine the ratio of the reference signal transmission power for the cell The adjustment scheme, wherein, for any three-dimensional spatial grid to which the cell belongs, the signal coverage of the three-dimensional spatial grid is associated with the measurement report and reference signal received power of each cell belonging to the three-dimensional spatial grid, the The traffic coverage of the three-dimensional spatial grid is associated with the cell traffic of each cell belonging to the three-dimensional spatial grid.

The device for adjusting the reference signal transmit power of one or more cells according to an embodiment of the present invention includes: a parameter acquisition unit configured to acquire the measurement report, cell traffic, and reference signal received power of each cell in the target geographic space area , wherein the target geospatial area is divided into a plurality of three-dimensional spatial grids; the cell determination unit is configured to determine one or more cells whose reference signal received power in the target geospatial area is less than a power threshold; the grid determination unit, It is configured to determine the three-dimensional spatial grid to which the one or more cells belong based on the measurement report of the one or more cells; and the scheme determining unit is configured to, for any one of the one or more cells, based on The signal coverage and traffic coverage of each three-dimensional spatial grid to which the cell belongs determines the adjustment scheme for the reference signal transmission power of the cell, wherein, for any three-dimensional spatial grid to which the cell belongs, the three-dimensional space The signal coverage of the grid is associated with the measurement report and reference signal received power of each cell belonging to the three-dimensional spatial grid, and the traffic coverage of the three-dimensional spatial grid is related to the cell coverage of each cell belonging to the three-dimensional spatial grid. flow associated.

The method and device for adjusting the reference signal transmission power of one or more cells according to the embodiments of the present invention can determine in real time one or more cells whose reference signal reception power is lower than the power threshold in the target geospatial area without manual intervention. cell, and determine an adjustment scheme for reference signal transmission power of the one or more cells based on the signal coverage and traffic coverage of the three-dimensional spatial grid to which the one or more cells belong.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals represent the same or similar features.

FIG. 1 is a flowchart of a method for adjusting reference signal transmission power of one or more cells according to an embodiment of the present invention;

Fig. 2 is the flow chart of the specific processing of step S108 shown in Fig. 1;

Fig. 3 is the flow chart of the specific processing of step S1084 shown in Fig. 2;

FIG. 4 is a flowchart of an apparatus for adjusting reference signal transmission power of one or more cells according to an embodiment of the present invention;

Fig. 5 is a structural diagram illustrating an exemplary hardware architecture of a computing device capable of implementing a method and an apparatus for adjusting reference signal transmission power of one or more cells according to an embodiment of the present invention.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the thicknesses of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, one skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or that other methods, components, materials, etc. may be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the main technical idea of the invention.

The traditional processing of adjusting the RS transmission power of one or more cells in the target geographical area has the following deficiencies: 1) Formulate an adjustment scheme for the RS transmission power of each problematic cell based on manual experience, which determines that the adjustment scheme is largely It mainly depends on the experience of the engineer, because it is impossible to make enough trial-and-error comparisons in the huge parameter space, so the adjustment effect cannot be predicted, and the adjustment effect can only be guaranteed through repeated adjustments and test verification; Factors such as large size and a long period for making adjustment plans can only solve the problem of network performance in a certain period of time, and cannot adjust the RS transmission power of the problem cell in real time with the dynamic changes of the network.

In view of one or more of the above problems, the present invention provides a novel method and device for adjusting the reference signal transmission power of one or more cells, which can determine in real time the power of the target geographic space without manual intervention. An adjustment scheme for reference signal transmission power of one or more cells whose reference signal reception power in the area is less than a power threshold.

Fig. 1 shows a schematic diagram of a method for adjusting reference signal transmit power of one or more cells according to an embodiment of the present invention. As shown in FIG. 1 , the method 100 includes: S102, acquiring the measurement report, cell flow, and reference signal received power of each cell in the target geospatial area, wherein the target geospatial area is divided into multiple three-dimensional spatial grids ; S104, determine one or more cells whose reference signal received power in the target geographic space area is less than the power threshold; S106, based on the measurement report of the one or more cells, determine the three-dimensional spatial grid to which the one or more cells belong grid; and S108, for any one of the one or more cells, based on the signal coverage and traffic coverage of each three-dimensional spatial grid to which the cell belongs, determine an adjustment scheme for the reference signal transmission power of the cell. Among them, for any three-dimensional spatial grid to which any cell in the target geospatial area belongs, the signal coverage of the three-dimensional spatial grid and the measurement report and reference signal received power of each cell belonging to the three-dimensional spatial grid In association, the traffic coverage of the three-dimensional spatial grid is associated with the cell traffic of each cell belonging to the three-dimensional spatial grid.

Here, the size of the three-dimensional spatial grid divided from the target geospatial area is smaller than the spatial coverage of the cell; for each three-dimensional spatial grid, there may be one or more cells belonging to the three-dimensional spatial grid, that is, the The three-dimensional spatial grid can be within the coverage of one or more cells; each cell can belong to one or more three-dimensional spatial grids, that is, each cell can cover one or more three-dimensional spatial grids. In some embodiments, in order to fine-tune the reference signal transmission power of the cells in the target geospatial area and ensure the adjustment effect, the size of the three-dimensional spatial grid can be the minimum resolution of the map, for example, 5m*5m* 5 meters.

In some embodiments, measurement reports, cell traffic, and reference signal received power for individual cells in the target geospatial area may be obtained from base stations serving these cells. For example, in a TD-LTE network, the measurement report, cell traffic, and reference signal received power of each cell in the target geospatial area can be obtained from the Operation and Maintenance Center (OMC) platform of the TD-LTE network. . Usually, the OMC platform is located in the base station and generates a measurement report file every 15 minutes, so the measurement report of each cell in the target geospatial area can be obtained at an integer multiple of 15 minutes, and the cell traffic and reference signal of these cells can be obtained at the same time receive power.

In the following, for the convenience of explanation, one or more cells in the target geospatial area whose reference signal received power is lower than the power threshold are collectively referred to as problem cells, and the specific process of adjusting the reference signal received power of any problem cell is described. In the method for adjusting the reference signal transmission power of one or more cells according to the embodiment of the present invention, the signal coverage and traffic coverage of the problem cell can be determined at a three-dimensional spatial grid granularity, so that the problem cell can be finely adjusted Reference signal transmission power to ensure the adjustment effect.

In some embodiments, the fingerprint library positioning algorithm may be used to determine the three-dimensional spatial grid to which the problematic cell belongs based on the measurement report of the problematic cell. Specifically, for any three-dimensional spatial grid, multiple grid sampling points can be set in the three-dimensional spatial grid; the 3D propagation model can be used to calculate the service range to reach one or more grids in the three-dimensional spatial grid The signal strength of the corresponding grid reference point of each base station in the three-dimensional spatial grid of the sampling point, the grid reference point-signal strength information composed of these grid reference points and the corresponding signal strength is digitized to form a series of field strength These field strength eigenvectors constitute the fingerprint library; the field strength eigenvector corresponding to the problem cell can be formed based on the geographic location information and signal strength information contained in the measurement report of the problem cell, and based on the corresponding The Euclidean distance similarity between the field strength eigenvectors in the field strength eigenvectors and the field strength eigenvectors in the fingerprint library is used to determine the three-dimensional spatial grid to which the problem cell belongs; specifically, for any three-dimensional space grid, if the corresponding to the problem cell If the Euclidean distance similarity between the field strength feature vector and the field strength feature vectors of more than half of the grid sampling points in the three-dimensional spatial grid is greater than the similarity threshold, it can be considered that the problem cell belongs to the three-dimensional space grid, that is, the problem cell Overlay the 3D spatial grid.

In some embodiments, as shown in FIG. 2, step S108 may include: S1082, setting the candidate reference signal transmission power of the problematic cell; S1084, judging that when the reference signal transmission power of the problematic cell is adjusted to the candidate reference signal transmission power, Whether the signal coverage and traffic coverage of the problem cell meet the predetermined conditions; S1086, if the judgment result is affirmative, then determine to adjust the reference signal transmission power of the problem cell to the candidate reference signal transmission power, otherwise repeat S1082-S1086. Wherein, the signal coverage and traffic coverage of the problematic cell are associated with the signal coverage and traffic coverage of each three-dimensional spatial grid to which the problematic cell belongs.

In some embodiments, for any three-dimensional spatial grid to which the problematic cell belongs, the signal coverage of the three-dimensional spatial grid may be characterized by the coverage field strength and overlapping coverage of the three-dimensional spatial grid. Wherein, the coverage field strength of the three-dimensional spatial grid is related to the average value of the reference signal received power of each primary cell belonging to the three-dimensional spatial grid; The following conditions are related to the number of adjacent cells: for any grid sampling point in the three-dimensional spatial grid, the difference between the received signal code power of the adjacent cell at the grid sampling point and the received signal code power of the main cell The difference is greater than a preset difference threshold. Here, the received signal code power is included in the measurement report of the cell.

For example, for the three-dimensional spatial grid i to which the problematic cell belongs, its coverage field strength may be the average value of the Reference Signal Received Power (RSRP) of each primary cell belonging to the three-dimensional spatial grid, namely :

Among them, Grid_i_RSRP represents the coverage field strength of the three-dimensional spatial grid i, RSRPs represents the reference signal received power of the primary cell s belonging to the three-dimensional spatial grid i, and n represents the number of primary cells belonging to the three-dimensional spatial grid i.

For another example, for the 3D spatial grid i to which the problematic cell belongs, the overlapping coverage of the 3D spatial grid is:

Among them, Grid_i_OVER represents the overlapping coverage of the three-dimensional spatial grid i, and ∑ CO _si represents the number of adjacent cells in the three-dimensional spatial grid i that meet the following conditions: the received signal code power of the adjacent cell at the same grid sampling point is equal to that of the main cell The difference between the code powers of the received signals is greater than a preset difference threshold, for example -6dB.

In some embodiments, for any three-dimensional spatial grid to which the problematic cell belongs, the traffic coverage of the three-dimensional spatial grid may be determined according to the traffic of each primary cell belonging to the three-dimensional spatial grid. For example, suppose there are three primary cells A, B, and C in the three-dimensional space grid i to which the problem cell belongs, and the total numbers of measurement reports about the primary cells A, B, and C are Num_A, Num_B, and Num_C respectively. In the three-dimensional space The numbers of the measurement reports about the primary cells A, B, and C reported in the grid i are Grid_i_A, Grid_i_B, and Grid_i_C respectively, and the traffic volumes of the primary cells A, B, and C are Volume_A, Volume_B, and Volume_C respectively. Then the three-dimensional spatial grid i The flow rate is:

Volume_Grid_i=Volume_A*(Grid_i_A/Nmu_A)+Volume_B*(Grid_i_B/Num_B)+Volume_C*(Grid_i_C/Num_C)

Therefore, as shown in Figure 3, step S1086 may further include: S1086-2, for any three-dimensional spatial grid to which the problematic cell belongs, in the case that the problematic cell is a primary cell belonging to the three-dimensional spatial grid, Determine the flow rate of the three-dimensional spatial grid based on the cell flow rate of the problematic cell and the cell flow rate of other main cells belonging to the three-dimensional spatial grid, and based on the received information contained in the measurement report of each cell belonging to the three-dimensional spatial grid The signal code power determines the overlapping coverage of the three-dimensional spatial grid, and based on the candidate reference signal received power corresponding to the candidate reference signal transmit power of the problematic cell, and the reference signal received power of other cells belonging to the three-dimensional spatial grid Determine the coverage field strength of the three-dimensional spatial grid; S1086-4, determine the traffic-signal coverage characteristic value of the problematic cell based on the traffic, coverage field strength, and overlapping coverage of each three-dimensional spatial grid to which the problematic cell belongs; And S1086-6, judging whether the traffic-signal coverage characteristic value of the problematic cell is greater than the characteristic value threshold. Here, if the traffic-signal coverage characteristic value of the cell is greater than the characteristic value threshold, it is determined that the signal coverage situation and the traffic coverage situation of the cell meet the predetermined condition.

In some embodiments, step S1086-4 may further include: calculating the three-dimensional coverage evaluation function value of the problematic cell based on the coverage field strength and overlapping coverage of each three-dimensional spatial grid to which the problematic cell belongs; Calculate the traffic coverage evaluation function value of the problem cell based on the flow of each three-dimensional spatial grid; and determine the traffic-signal coverage characteristic value of the problem cell based on the three-dimensional coverage evaluation function value and the traffic coverage evaluation function value of the problem cell.

Here, the stereo coverage evaluation function value of the problem cell can be calculated according to the following equation:

f3D(x)＝A1*weak coverage grid ratio+A2*high overlap coverage grid ratio

Wherein, the weak coverage grid ratio is the ratio of the number of three-dimensional spatial grids whose coverage field strength to which the problem cell belongs is lower than the field strength threshold (for example, -110dBm) to the total number of three-dimensional spatial grids to which the problem cell belongs; The ratio of high overlapping coverage grids is the ratio of the number of 3D spatial grids whose overlapping coverage to which the problem cell belongs is greater than the coverage threshold (for example, 3) to the total number of 3D spatial grids to which the problem cell belongs; A1 and A2 are the weight value of the weak coverage ratio and the weight value of the overlapping coverage ratio, respectively, indicating the degree of attention to the weak coverage and overlapping coverage.

The flow coverage evaluation function value of the problem cell can be calculated according to the following equation:

fVOL(x)＝F1*weak coverage traffic ratio+F2*high overlap traffic ratio

Among them, the weak coverage traffic ratio is the ratio of the sum of the traffic of the three-dimensional spatial grid whose coverage field intensity is lower than the field strength threshold belonging to the problem cell to all the traffic of the three-dimensional spatial grid to which the problem cell belongs; the high overlapping traffic ratio is The ratio of the sum of the traffic of the three-dimensional spatial grid whose overlapping coverage degree to which the problem cell belongs to is greater than the coverage threshold to all the traffic of the three-dimensional spatial grid to which the problem cell belongs, F1 and F2 are the weight values of the proportion of weak coverage traffic and The weight value of the proportion of high overlapping traffic, indicating the degree of attention to weak coverage traffic and high overlapping coverage traffic.

In some embodiments, a genetic algorithm may be used to set the candidate reference signal transmission power of the problematic cell. After determining the adjustment scheme for the reference signal transmission power of the problematic cell, the method for adjusting the reference signal transmission power of one or more cells according to the embodiment of the present invention may further include: Step S110 (not shown in the figure), the The adjustment scheme for the reference signal transmission power of the problematic cell is sent to the base station serving the problematic cell, so that the base station adjusts the reference signal transmission power for the problematic cell based on the adjustment scheme.

Compared with the traditional method of adjusting the reference signal transmission power of one or more cells, the method according to the embodiment of the present invention has at least the following advantages: First, the calculation and analysis of the correlation index of the network structure are completed online in real time, and the problem cell is located , generate a corresponding optimization plan for the problematic cell, and complete the implementation of the optimization plan, so as to better adapt to the dynamic changes of the wireless network; secondly, when judging and locating the problematic cell, a simple and effective problematic cell search mechanism is adopted, and the efficiency is much better than that of manual investigation .

The method for adjusting the reference signal transmission power of one or more cells according to the embodiment of the present invention has been described in detail above in conjunction with FIGS. A device that emits power.

As shown in FIG. 4 , an apparatus 400 for adjusting reference signal transmission power of one or more cells according to an embodiment of the present invention includes a parameter acquisition unit 402, a cell determination unit 404, a grid determination unit 406, a scheme determination unit 408, and a scheme The sending unit 410, wherein: the parameter obtaining unit 402 is configured to obtain the measurement report, cell flow, and reference signal received power of each cell in the target geographic space area (that is, execute step S102); the cell determining unit 404 is configured to determine One or more cells whose reference signal received power in the target geographic space area is less than the power threshold (that is, step S104 is performed); the grid determination unit 406 is configured to determine the one or more cells based on the measurement report of the one or more cells The three-dimensional spatial grids to which multiple cells belong (that is, step S106 is performed); the scheme determination unit 408 is configured to, for any one of the one or more cells, based on the signal of each three-dimensional spatial grid to which the cell belongs Coverage situation and traffic coverage situation, determine the adjustment scheme for the reference signal transmission power of the cell (that is, perform step S108); the scheme sending unit 410 is configured to send the adjustment scheme for the reference signal transmission power of the cell to the A base station serving a cell. Wherein, for any three-dimensional spatial grid to which the cell belongs, the signal coverage of the three-dimensional spatial grid is associated with the measurement report and reference signal received power of each cell belonging to the three-dimensional spatial grid, and the three-dimensional spatial grid The traffic coverage of the grid is associated with the cell traffic of each cell belonging to the three-dimensional spatial grid.

Similarly, below, for convenience of description, one or more cells in the target geospatial region whose received reference signal power is lower than the power threshold are collectively referred to as problem cells, and specific processing of adjusting reference signal received power is described for a single problem cell.

In some embodiments, the scheme determination unit 408 may further include a candidate transmission power setting unit 4082, a cell coverage determination unit 4084, and a transmission power adjustment determination unit 4086, wherein: the candidate transmission power setting unit 4082 is configured to set The candidate reference signal transmission power of the problem cell (that is, step S1082 is performed); the cell coverage judging unit 4084 is configured to judge when the reference signal transmission power of the problem cell is adjusted to the candidate reference signal transmission power, the signal coverage of the problem cell and Whether the traffic coverage situation meets the predetermined condition (that is, step S1084 is executed); the transmission power adjustment determination unit 4086 is configured to determine that the reference signal transmission power of the problem cell is adjusted if the judgment result of the cell coverage situation judgment unit 4084 is affirmative. Transmit power for the candidate reference signal (ie, perform step S1086). Here, when the determination result of the cell coverage situation determination unit 4084 is negative, the scheme determination unit 408 repeats the above processing.

Other details of the apparatus for adjusting reference signal transmit power of one or more cells according to the embodiment of the present invention are the same as the corresponding methods described above in conjunction with FIGS. 1 to 3 , and will not be repeated here.

The device for adjusting the reference signal transmission power of one or more cells according to the embodiment of the present invention can determine the signal coverage and traffic coverage of the problematic cell at the granularity of the three-dimensional space grid, so as to finely adjust the reference signal transmission power of the problematic cell , to ensure the adjustment effect.

At least a part of the method and apparatus for adjusting reference signal transmission power of one or more cells described in conjunction with FIG. 1 to FIG. 4 may be implemented by a computing device. Fig. 5 is a structural diagram illustrating an exemplary hardware architecture of a computing device capable of implementing a method and an apparatus for adjusting reference signal transmission power of one or more cells according to an embodiment of the present invention. As shown in FIG. 5 , the computing device 500 includes an input device 501 , an input interface 502 , a central processing unit 503 , a memory 604 , an output interface 505 , and an output device 506 . Wherein, the input interface 502, the central processing unit 503, the memory 504, and the output interface 505 are connected to each other through the bus 510, and the input device 501 and the output device 506 are respectively connected to the bus 510 through the input interface 502 and the output interface 505, and then connected to the computing device 500 other component connections. Specifically, the input device 501 receives input information from the outside (for example, sensors installed on the vehicle), and transmits the input information to the central processing unit 503 through the input interface 502; The instruction processes the input information to generate output information, temporarily or permanently stores the output information in the memory 504, and then transmits the output information to the output device 506 through the output interface 505; the output device 506 outputs the output information to the computing device 500 External for user use.

That is to say, the device shown in FIG. 4 can also be implemented as including: a memory storing computer-executable instructions; and a processor, which can implement the processes described in conjunction with FIGS. 1 to 3 when executing the computer-executable instructions. A method of adjusting reference signal transmit power for one or more cells. Here, the processor may execute computer-executable instructions based on input information from, for example, a base station, thereby realizing the method and apparatus for adjusting reference signal transmission power of one or more cells described in conjunction with FIG. 1 to FIG. 4 .

It is to be understood that the invention is not limited to the specific arrangements and processes described above and shown in the drawings. For conciseness, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the sequence of steps after understanding the spirit of the present invention.

The functional blocks shown in the structural block diagrams described above may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments employed to perform the required tasks. Programs or code segments can be stored in machine-readable media, or transmitted over transmission media or communication links by data signals carried in carrier waves. "Machine-readable medium" may include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and the like. Code segments may be downloaded via a computer network such as the Internet, an Intranet, or the like.

The present invention may be embodied in other specific forms without departing from its spirit and essential characteristics. For example, the algorithms described in certain embodiments may be modified without departing from the basic spirit of the invention in terms of system architecture. Therefore, the present embodiments are to be considered in all respects as illustrative rather than restrictive, the scope of the present invention is defined by the appended claims rather than the above description, and, within the meaning and equivalents of the claims, All changes in scope are thereby embraced within the scope of the invention.

Claims (20)

1. a kind of method for the reference signal transmission power for adjusting one or more cells, including：

Measurement report, cell flow and the Reference Signal Received Power of each cell in target geographic area of space are obtained, Wherein, the target geographic area of space is divided into multiple three dimensions grids；

Determine that the Reference Signal Received Power in the target geographic area of space is less than one or more cells of power threshold；

Based on the measurement report of one or more of cells, the three dimensions grid that one or more of cells are belonged to are determined Lattice；And

For any one in one or more of cells, each three dimensions grid for being belonged to based on the cell Signal coverage condition and flow coverage condition determine the Adjusted Option of the reference signal transmission power for the cell, wherein

For any one three dimensions grid that the cell is belonged to, the signal coverage condition of the three dimensions grid with The measurement report and Reference Signal Received Power for belonging to each cell of the three dimensions grid are associated, the three-dimensional space Between grid each cell of the flow coverage condition with belonging to the three dimensions grid cell flow it is associated.

2. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 1, wherein it is determined that Include for the processing of the Adjusted Option of the reference signal transmission power of the cell：

Set the candidate reference signals transmission power of the cell；

Judge when the reference signal transmission power of the cell is adjusted to the candidate reference signals transmission power, the cell Signal coverage condition and flow coverage condition whether meet predetermined condition；

If a determination be made that certainly, it is determined that the reference signal transmission power of the cell is adjusted to the candidate reference Otherwise signal transmission power repeats the above, wherein

Each three dimensions grid that the signal coverage condition and flow coverage condition of the cell are belonged to the cell Signal coverage condition and flow coverage condition are associated.

3. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 2, wherein, judge When the reference signal transmission power of the cell is adjusted to the candidate reference signals transmission power, the signal of the cell covers The processing whether lid situation and flow coverage condition meet predetermined condition includes：

It is to belong to the three dimensions grid in the cell for any one three dimensions grid that the cell is belonged to In the case of one main plot of lattice,

Cell flow based on the cell and belong to the three dimensions grid other each main plots cell stream Amount determines the flow of the three dimensions grid,

Based on the received signal code power included in the measurement report for belonging to each cell of the three dimensions grid, determine The overlapping coverage of the three dimensions grid,

Power is received based on the candidate reference signals corresponding to the candidate reference signals transmission power of the cell and is belonged to The Reference Signal Received Power of other each main plots of the three dimensions grid determines the covering of the three dimensions grid Field strength；

Flow, covering field strength and overlapping coverage based on each three dimensions grid that the cell is belonged to, determine institute State flow-signal coverage condition characterization value of cell；And

Judge whether flow-signal coverage condition characterization value of the cell is more than characterization value threshold value,

Wherein, if the flow of the cell-signal coverage condition characterization value is more than the characterization value threshold value, judge described small The signal coverage condition and flow coverage condition in area meet the predetermined condition.

4. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 3, wherein, it is described The covering field strength of three dimensions grid receives power with the candidate reference signals of the cell and belongs to the three dimensions grid The average value of the Reference Signal Received Power of other each main plots of lattice is related,

Of adjacent cell of the overlapping coverage of the three dimensions grid with meeting the following conditions in the three dimensions grid Number is related：For any one grid sampled point in the three dimensions grid, adjacent cell at the grid sampled point Difference between received signal code power and the received signal code power of main plot is more than preset difference value threshold value.

5. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 3, wherein, it is based on Flow, covering field strength and the overlapping coverage for each three dimensions grid that the cell is belonged to, determine the cell The processing of flow-signal coverage condition characterization value includes：

The covering field strength of each three dimensions grid and overlapping coverage belonged to based on the cell, calculates the cell Three-dimensional coverage evaluating functional value；

Flow based on each three dimensions grid that the cell is belonged to calculates the flow coverage evaluating function of the cell Value；And

Three-dimensional coverage evaluating functional value and flow coverage evaluating functional value based on the cell, calculate the flow of the cell- Signal coverage condition characterization value.

6. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 5, wherein, it is based on The covering field strength for each three dimensions grid that the cell is belonged to and overlapping coverage calculate the three-dimensional covering of the cell The processing of valuation functions value includes：

The covering field strength that the cell is belonged to is returned less than the number of the three dimensions grid of field strength threshold value with the cell The ratio between total number of three dimensions grid of category is multiplied with the first weighted value, obtains the first product；

The overlapping coverage that the cell is belonged to is more than the number of the three dimensions grid of coverage threshold value and the cell The ratio between total number of three dimensions grid belonged to is multiplied with the second weighted value, obtains the second product；

By the second product addition described in first sum of products, the three-dimensional coverage evaluating functional value of the cell is obtained.

7. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 5, wherein, it is based on The flow for each three dimensions grid that the cell is belonged to calculates the processing of the flow coverage evaluating functional value of the cell Including：

By the covering field strength that the cell is belonged to less than the sum of flow of three dimensions grid of field strength threshold value and the cell The ratio between all flows of three dimensions grid belonged to are multiplied with the 3rd weighted value, obtain the 3rd product；

The overlapping coverage that the cell is belonged to be more than the sum of flow of three dimensions grid of coverage threshold value with it is described The ratio between all flows of three dimensions grid that cell is belonged to are multiplied with the 4th weighted value, obtain the 4th product；

By the 4th product addition described in the 3rd sum of products, the flow coverage evaluating functional value of the cell is obtained.

8. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 1, further includes：

The base station that service is provided for the cell will be sent to for the Adjusted Option of the reference signal transmission power of the cell.

9. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 2, wherein, it utilizes Genetic algorithm sets the candidate reference signals transmission power of the cell.

10. the method for the reference signal transmission power of the one or more cells of adjustment according to claim 1, wherein, profit The three dimensions grid that one or more of cells are belonged to is determined with fingerprint base location algorithm.

11. a kind of device for the reference signal transmission power for adjusting one or more cells, including：

Parameter acquiring unit, be configured as obtaining the measurement report of each cell in target geographic area of space, cell flow, And Reference Signal Received Power, wherein, the target geographic area of space is divided into multiple three dimensions grids；

Cell determination unit, the Reference Signal Received Power being configured to determine that in the target geographic area of space are less than power One or more cells of threshold value；

Grid determination unit is configured as the measurement report based on one or more of cells, determines one or more of The three dimensions grid that cell is belonged to；And

Scheme determination unit is configured as, for any one in one or more of cells, based on the cell being returned The signal coverage condition of each three dimensions grid and flow coverage condition belonged to determines to send out for the reference signal of the cell The Adjusted Option of power is penetrated, wherein

For any one three dimensions grid that the cell is belonged to, the signal coverage condition of the three dimensions grid with The measurement report and Reference Signal Received Power for belonging to each cell of the three dimensions grid are associated, the three-dimensional space Between grid each cell of the flow coverage condition with belonging to the three dimensions grid cell flow it is associated.

12. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 11, wherein, institute Stating scheme determination unit includes：

Candidate transmitting power setting unit is configured as setting the candidate reference signals transmission power of the cell；

MPS process situation judging unit is configured as judging that the reference signal transmission power in the cell is adjusted to the time When selecting reference signal transmission power, whether the signal coverage condition and flow coverage condition of the cell meet predetermined condition；

Transmission power adjusts determination unit, and the judging result being configured as in the MPS process situation judging unit is affirmative In the case of, it determines the reference signal transmission power of the cell being adjusted to the candidate reference signals transmission power, wherein

In the case where the judging result of the MPS process situation judging unit is negative, in the scheme determination unit repetition State processing,

Each three dimensions grid that the signal coverage condition and flow coverage condition of the cell are belonged to the cell Signal coverage condition and flow coverage condition are associated.

13. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 12, wherein, institute MPS process situation judging unit is stated to be further configured to：

It is to belong to the three dimensions grid in the cell for any one three dimensions grid that the cell is belonged to In the case of one main plot of lattice,

Cell flow based on the cell and belong to the three dimensions grid other each main plots cell stream Amount determines the flow of the three dimensions grid,

Based on the received signal code power included in the measurement report for belonging to each cell of the three dimensions grid, determine The overlapping coverage of the three dimensions grid,

Power is received based on the candidate reference signals corresponding to the candidate reference signals transmission power of the cell and is belonged to The Reference Signal Received Power of other each main plots of the three dimensions grid determines the covering of the three dimensions grid Field strength；

Flow, covering field strength and overlapping coverage based on each three dimensions grid that the cell is belonged to, determine institute State flow-signal coverage condition characterization value of cell；And

Judge whether flow-signal coverage condition characterization value of the cell is more than characterization value threshold value,

Wherein, if the flow of the cell-signal coverage condition characterization value is more than the characterization value threshold value, judge described small The signal coverage condition and flow coverage condition in area meet the predetermined condition.

14. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 13, wherein, institute The candidate reference signals of the covering field strength and the cell of stating three dimensions grid receive power and belong to the three dimensions The average value of the Reference Signal Received Power of other each main plots of grid is related,

Of adjacent cell of the overlapping coverage of the three dimensions grid with meeting the following conditions in the three dimensions grid Number is related：For any one grid sampled point in the three dimensions grid, adjacent cell at the grid sampled point Difference between received signal code power and the received signal code power of main plot is more than preset difference value threshold value.

15. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 13, wherein, institute MPS process situation judging unit is stated to be further configured to：

The covering field strength of each three dimensions grid and overlapping coverage belonged to based on the cell, calculates the cell Three-dimensional coverage evaluating functional value；

Flow based on each three dimensions grid that the cell is belonged to calculates the flow coverage evaluating function of the cell Value；And

Three-dimensional coverage evaluating functional value and flow coverage evaluating functional value based on the cell, calculate the flow of the cell- Signal coverage condition characterization value.

16. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 15, wherein, institute MPS process situation judging unit is stated to be further configured to：

The covering field strength that the cell is belonged to is returned less than the number of the three dimensions grid of field strength threshold value with the cell The ratio between total number of three dimensions grid of category is multiplied with the first weighted value, obtains the first product；

The overlapping coverage that the cell is belonged to is more than the number of the three dimensions grid of coverage threshold value and the cell The ratio between total number of three dimensions grid belonged to is multiplied with the second weighted value, obtains the second product；

By the second product addition described in first sum of products, the three-dimensional coverage evaluating functional value of the cell is obtained.

17. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 15, wherein, institute MPS process situation judging unit is stated to be further configured to：

By the covering field strength that the cell is belonged to less than the sum of flow of three dimensions grid of field strength threshold value and the cell The ratio between all flows of three dimensions grid belonged to are multiplied with the 3rd weighted value, obtain the 3rd product；

The overlapping coverage that the cell is belonged to be more than the sum of flow of three dimensions grid of coverage threshold value with it is described The ratio between all flows of three dimensions grid that cell is belonged to are multiplied with the 4th weighted value, obtain the 4th product；

By the 4th product addition described in the 3rd sum of products, the flow coverage evaluating functional value of the cell is obtained.

18. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 11, further includes：

Scheme transmitting element is configured as to be sent to as institute for the Adjusted Option of the reference signal transmission power of the cell State the base station that cell provides service.

19. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 12, wherein, institute State the candidate reference signals transmission power that candidate transmitting power setting unit is configured as setting the cell using genetic algorithm.

20. the device of the reference signal transmission power of the one or more cells of adjustment according to claim 11, wherein, institute Cell determination unit is stated to be configured as determining three-dimensional space that one or more of cells are belonged to using fingerprint base location algorithm Between grid.