CN102883332B - Method and device for determining base station site - Google Patents
Method and device for determining base station site Download PDFInfo
- Publication number
- CN102883332B CN102883332B CN201110197201.1A CN201110197201A CN102883332B CN 102883332 B CN102883332 B CN 102883332B CN 201110197201 A CN201110197201 A CN 201110197201A CN 102883332 B CN102883332 B CN 102883332B
- Authority
- CN
- China
- Prior art keywords
- wireless network
- base station
- cell
- lte wireless
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 91
- 238000005259 measurement Methods 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 15
- 238000011158 quantitative evaluation Methods 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000007774 longterm Effects 0.000 claims description 6
- 238000004088 simulation Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a method and device for determining a base station site. The method comprises the steps that during the course of determining the base station site of a TD-LTE (time division-long term evolution) wireless network, drive test data or frequency sweep data for a non-TD-LTE wireless network are utilized to determine practical path loss of the TD-LTE wireless network; a selective network performance index is determined according to the practical path loss; and the base station site meeting the requirement of the selective network performance index is determined as the base station site of the TD-LTE wireless network. Compared with the path loss determined according to a corrected TD-LTE network communication mode in the prior art, the path loss determined according to the method and the device is more authentic, and the accuracy of the determined base station site of the TD-LTE wireless network is ensured.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for determining a base station address.
Background
In the design stage of a time division synchronous code division multiple access (TD-SCDMA Long Term Evolution, TD-LTE) wireless network, base station site planning is a very important work. The existing base station site planning method of the TD-LTE wireless network takes the base station site of the existing wireless network, such as GSM or TD-SCDMA, as an alternative base station site, and determines the base station site of the TD-LTE wireless network from the alternative base station site.
Specifically, as shown in fig. 1, the existing method for determining the base station address of the TD-LTE wireless network includes the following steps:
step 101, establishing a TD-LTE network propagation model.
And 102, correcting the TD-LTE network propagation model by using the sampling test data.
And 103, selecting partial base station sites from the alternative base station sites.
And 104, importing the selected base station address into a network planning tool to perform coverage prediction.
And determining the path loss according to the corrected propagation model, setting a parameter value corresponding to the service characteristic of the TD-LTE network, and performing coverage prediction by using the selected partial base station site.
And 105, judging whether the coverage prediction result meets the coverage requirement.
If the coverage prediction result meets the coverage requirement, the step 106 is continuously executed, otherwise, the step 108 is executed.
And 106, carrying out capacity simulation.
And step 107, judging whether the capacity simulation result meets the capacity requirement.
And if the capacity simulation result meets the capacity requirement, skipping to execute the step 109, otherwise, continuing to execute the step 108.
And 108, manually screening or adding the base station address, and skipping to execute the step 104.
And when the result of the coverage prediction or the capacity simulation cannot meet the set requirement, manually screening or adding the selected base station address, and performing the coverage prediction and the capacity simulation again.
And step 109, outputting the base station site with the coverage prediction and capacity simulation results meeting the requirements.
The output base station address can be used as the determined base station address of the TD-LTE wireless network.
The existing method for determining the base station address of the TD-LTE wireless network has the following problems:
in the prior art, the TD-LTE network propagation model is corrected by using sampling test data, and then the path loss is calculated. Because the path loss is an analog value determined according to the network propagation model, a simulation result obtained according to the path loss is difficult to truly reflect the network coverage condition, and therefore, when the base station is set according to the base station address of the TD-LTE wireless network determined according to the simulation result, the expected network coverage effect cannot be achieved, namely, the accuracy of the determined base station address of the TD-LTE wireless network is low.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining a base station site, which are used for solving the problem of low accuracy of the base station site of a TD-LTE wireless network determined in the prior art.
A method of determining a base station site, the method comprising:
acquiring drive test data or frequency sweep data aiming at a non-time division synchronous code division multiple access long term evolution TD-LTE wireless network; and are
Determining the path loss of the TD-LTE wireless network according to the obtained drive test data or sweep frequency data;
selecting a network performance index according to the determined path loss;
and determining the base station address of the TD-LTE wireless network as the base station address of the selected network performance index meeting the set requirement.
An apparatus for determining a base station site, the apparatus comprising:
the data acquisition module is used for acquiring drive test data or frequency sweep data aiming at a non-time division synchronous code division multiple access long term evolution TD-LTE wireless network;
the path loss determining module is used for determining the path loss of the TD-LTE wireless network according to the obtained drive test data or sweep frequency data;
the index selection module is used for selecting a network performance index according to the determined path loss;
and the base station site determining module is used for determining the base station site of which the selected network performance index meets the set requirement as the base station site of the TD-LTE wireless network.
According to the scheme provided by the embodiment of the invention, when the base station address of the TD-LTE wireless network is determined, the actual path loss of the TD-LTE wireless network is determined by utilizing the drive test data or the sweep frequency data aiming at the non-TD-LTE wireless network, the selected network performance index is determined according to the actual path loss, and the base station address meeting the requirement of the selected network performance index is determined as the base station address of the TD-LTE wireless network. Compared with the prior art that the path loss is determined according to the corrected TD-LTE network propagation model, the path loss determined by the embodiment of the invention has more authenticity, and the accuracy of the determined TD-LTE wireless network base station address is ensured.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for determining a base station site according to the prior art;
fig. 2 is a flowchart illustrating steps of a method for determining a base station site according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating steps of a method for determining a base station address according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating steps of a method for automatically selecting a base station address according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for determining a base station address according to a fourth embodiment of the present invention.
Detailed Description
Aiming at the problem that the accuracy of the determined TD-LTE wireless network base station address in the prior art is low, the embodiment of the invention provides a scheme for determining the base station address according to the actual path loss, and the accuracy of the determined base station address is improved. Meanwhile, aiming at the problems that in the prior art, when the simulation result cannot meet the set requirement, manual screening or adding needs to be carried out on the selected base station address, the screening or adding depends on the subjective experience of an operator, the randomness is strong, and the base station address is difficult to rapidly determine.
In each embodiment of the present invention, the drive test data refers to data that is obtained by performing a test using a test handset and GPS equipment, reading measurement information of the test handset through drive test software, processing the measurement information in combination with the GPS information, and outputting the data including longitude and latitude of a test point, field intensity of a received serving cell, and field intensity information of a plurality of received neighboring cells.
The frequency sweep data refers to that a frequency scanner is used for scanning and testing frequency points in a frequency band range one by one to obtain data including longitude and latitude of a test point and received signal strength information from different cells.
The scheme of the invention is explained by combining the drawings and various embodiments in the specification.
The first embodiment,
An embodiment of the present invention provides a method for determining a base station address, where a flow of the steps of the method is shown in fig. 2, and the method includes:
step 201, drive test data or frequency sweep data for a non-TD-LTE wireless network is obtained.
Existing more mature wireless networks include various systems such as Global System for mobile communications (GSM), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), and Code Division Multiple Access (CDMA) 2000. When the base station address of the TD-LTE wireless network is determined, the base station address of the TD-LTE wireless network can be analyzed and determined according to the base station address of the existing wireless network. Because the working frequency band of TD-SCDMA is close to that of TD-LTE, and the coverage range of TD-SCDMA wireless network in each city is of initial scale, in each embodiment of the invention, the TD-SCDMA wireless network working under 2GHz frequency band can be used for analysis. Specifically, in this step, drive test data or frequency sweep data may be collected in the TD-SCDMA wireless network.
Step 202, determining the path loss of the TD-LTE wireless network.
In this step, after the TD-SCDMA wireless network collects the drive test data or the frequency sweep data, the path loss of the TD-SCDMA wireless network can be determined. The path loss of the TD-LTE wireless network can be determined according to a preset condition to be met between the path loss of the TD-SCDMA wireless network and the path loss of the TD-LTE wireless network. Specifically, the difference between the path loss of the TD-LTE wireless network and the path loss of the TD-SCDMA wireless network can be determined according to the consistent deviation of the base station sites of the TD-LTE wireless network and the TD-SCDMA wireless network caused by the frequency band difference, so that after the TD-SCDMA wireless network determines the path loss of the TD-LTE wireless network according to the drive test data or the sweep frequency data of the TD-SCDMA wireless network, the path loss of the TD-LTE wireless network can be determined according to the difference.
The difference may be predetermined by: in the TD-SCDMA wireless network, a group of test data is respectively collected in the TD-SCDMA frequency band and the TD-LTE frequency band, and the path loss of the TD-SCDMA frequency band and the TD-LTE frequency band is respectively determined. And taking the determined path loss of the TD-SCDMA wireless network in the TD-LTE frequency band as the path loss of the TD-LTE wireless network, statistically analyzing the loss difference between the path loss of the TD-SCDMA frequency band and the path loss of the TD-LTE frequency band, and determining the loss difference as the difference between the path loss of the TD-SCDMA wireless network and the path loss of the TD-LTE wireless network.
And 203, determining the selected network performance index according to the determined path loss.
Since the network performance indicators are related to path loss, the specific values of the network performance indicators can be determined after the path loss is determined. The network performance index that needs to be satisfied may be set according to actual needs, and specifically, in this embodiment, the network performance index may include a reference signal received power RSRP coverage rate and a reference signal received quality RSRQ coverage rate.
The RSRP coverage requirement refers to the requirement for the number of RSRPs larger than a first threshold value in the RSRPs from each TD-LTE wireless network cell received by each route point, and the RSRQ coverage requirement refers to the requirement for the number of RSRQs larger than a second threshold value in the RSRQs from each TD-LTE wireless network cell received by each route point.
And step 204, determining the base station address of the TD-LTE wireless network.
The method comprises the following steps: and determining the base station address of the TD-LTE wireless network as the base station address of the selected network performance index meeting the set requirement. The setting requirement for the selected network performance indicator may be that RSRP coverage is greater than a first limit value and RSRQ coverage is greater than a second limit value.
In this step, the base station address with the selected network performance index meeting the setting requirement can be determined according to the base station address of the existing TD-SCDMA wireless network.
The first embodiment of the present invention is described below with reference to a specific example.
Example II,
A second embodiment of the present invention provides a method for determining a base station address, where the flow of the steps of the method is shown in fig. 3, and the method includes:
step 301, a new project file is created.
Step 302, importing relevant data into the project file.
The relevant data includes:
base station address information (such as longitude and latitude information) of the TD-SCDMA wireless network, drive test data or frequency sweep data of the TD-SCDMA wireless network, and antenna basic data used by the TD-SCDMA wireless network and the TD-LTE wireless network. The associated data may also include a digital map for ease of displaying the base station site.
And step 303, setting address selection constraint conditions.
In the process of determining the base station address of the TD-LTE wireless network in this embodiment, not only the requirement of the selected network performance index can be set, but also other conditions can be constrained. For example, the site selection constraint condition may include a maximum value of the determined number of base stations of the TD-LTE wireless network, and a threshold value of each set network performance index.
Step 304, automatically selecting the base station address.
The method comprises the following steps: and determining the path loss of the TD-LTE wireless network according to the determined path loss of the TD-SCDMA wireless network, and determining the base station address of the TD-LTE wireless network meeting the constraint condition according to the path loss.
And 305, outputting the selected TD-LTE wireless network base station address.
The selected TD-LTE wireless network base station address is output in the step, and meanwhile, the numerical value of each network performance index can be output, so that the network coverage condition can be conveniently checked subsequently.
Taking the determination of the path loss by using the drive test data as an example, a method for automatically selecting a base station address is provided through the third embodiment. In the third embodiment below, it may be set to collect road test data of N road test points, where each road test point is denoted as DT (1), DT (2), and DT (3). Assuming that each drive test point can receive signals of M TD-SCDMA wireless network cells, M may be set to be not greater than 32, each TD-SCDMA wireless network Cell is respectively denoted as Cell (S1), Cell (S2), Cell (S3),....... and Cell (sm). In the process of determining the base station address of the TD-LTE wireless network, each TD-LTE wireless network Cell may be set to correspond to each TD-SCDMA wireless network Cell one to one, and each TD-LTE wireless network Cell may be respectively denoted as Cell (L1), Cell (L2), Cell (L3),.
Example III,
A third embodiment of the present invention provides a method for automatically selecting a base station address, where as shown in fig. 4, a flowchart of steps of the method is provided, and the method includes:
step 401, determining the path loss of the TD-SCDMA wireless network.
In this step, for each route point, the path loss from each TD-SCDMA wireless network cell to the route point can be determined by, but not limited to, the following formula:
PLDT(n)＝PPccPch RSCP(Cell(sm))-Gainantenna(TDs)-PPccPch RSCP(DT(n))
wherein,
PLDT(n)representing the path loss of the signal from the mth TD-SCDMA wireless network cell (Sm) to the nth routing point DT (n);
PPccPch RSCP(Cell(sm))signal transmission power of a Primary Common Control Physical Channel (PCCPCH) representing an mth TD-SCDMA wireless network cell (sm);
Gainantenna(TDs)the antenna gain at the connection of the nth drive test point DT (n) and the mth TD-SCDMA wireless network cell (Sm) is represented;
PPccPch RSCP(DT(n))represents the Received Signal Code Power (RSCP) from the mth TD-SCDMA wireless network cell (sm) Received at the nth drive test point dt (n).
Step 402, determining the path loss of the TD-LTE wireless network.
After the path loss from each TD-SCDMA wireless network cell to the road measurement point is determined for each road measurement point, the path loss from the TD-LTE wireless network cell corresponding to each TD-SCDMA wireless network cell to the road measurement point can be determined for each road measurement point according to the fixed difference between the path loss generated in the TD-SCDMA wireless network and the path loss generated in the TD-LTE wireless network. In the present embodiment, the PL determined in step 301 is compared withDT(n)Correspondingly, the path loss from the mth TD-LTE wireless network cell to the nth routing point can be represented by PLDT(n)' to indicate.
And step 403, determining RSRP and RSRQ.
In this embodiment, RSRP coverage and RSRQ coverage may be determined as network performance indicators to be met.
The RSRP received by each drive test point from each TD-LTE wireless network cell may be determined by the following formula:
RSRP(DT(n))＝PRS_cell(m)+Gainantenna(LTE)-PLDT(n)’
wherein,
RSRP(DT(n))indicating the RSRP received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell;
PRS_cell(m)represents the power of a transmitting signal received by the nth drive test point DT (n) from the mth TD-LTE wireless network cell (Lm);
Gainantenna(LTE)the antenna gain at the connection between the nth drive test point DT (n) and the mth TD-LTE wireless network cell (Lm) is represented;
PLDT(n)' represents the path loss of a signal from the nth drive test point DT (n) to the mth TD-LTE wireless network cell (Lm);
the RSRQ received by each drive test point from each TD-LTE wireless network cell may be determined by the following formula:
RSRQ(DT(n))＝RSRP(DT(n))-∑RSRP(DT_m)
wherein,
RSRQ(DT(n))the RSRQ received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell is represented;
RSRP(DT(n))indicating the strength of a reference signal RS received by an nth drive test point DT (n) from an mth TD-LTE wireless network cell (Lm);
∑RSRP(DT_m)represents the sum of the RS strengths received by the nth drive test point dt (n) from all non-serving cells, which are TD-LTE wireless network cells other than the TD-LTE wireless network cell that causes the nth drive test point to obtain the strongest RSRP.
Step 404, determine the strong service capability cell and the weak service capability cell.
Specifically, when determining the base station address of the TD-LTE wireless network, the embodiment may respectively perform base station address screening for a cell with strong service capability and base station address adding for a cell with weak service capability according to the base station address of the existing TD-SCDMA wireless network, where the cell with strong service capability refers to the TD-LTE wireless network cell whose number of served drive test points is greater than a threshold, and the cell with weak service capability refers to the TD-LTE wireless network cell whose number of served drive test points is not greater than the threshold.
Therefore, in this step, the number of route measurement points served by each TD-LTE wireless network cell may be determined, a TD-LTE wireless network cell whose number of route measurement points served is greater than a threshold is determined as a cell with strong service capability, and a TD-LTE wireless network cell whose number of route measurement points served is not greater than the threshold is determined as a cell with weak service capability.
Step 405, determining a screening base station site corresponding to the cell with strong service capability, and determining an adding base station site corresponding to the cell with weak service capability.
The method comprises the steps of respectively determining a base station site corresponding to a cell with strong service capability and a base station site corresponding to a cell with weak service capability according to a base station site of a TD-SCDMA wireless network which is input in advance.
Aiming at the cell with strong service capability, partial base station addresses meeting the set network performance index requirement can be screened from the base station addresses of the TD-SCDMA wireless network corresponding to the cell with strong service capability to serve as the determined base station addresses of the TD-LTE wireless network. In this embodiment, the base station address meeting the set network performance index requirement may be determined by using a convergence determination method. The specific convergence determination process may be to perform convergence and determination according to the RSRP coverage target value, the RS RSRQ coverage target value, and the number of times of the cyclic search and evaluation. When the RSRP coverage rate and the RS RSRQ coverage rate both meet the target values, and the cycle number is smaller than the set cycle number, the normal convergence is realized; when at least one of the RSRP coverage rate and the RSRQ coverage rate does not meet the target value and the cycle number reaches the set cycle number, the cycle is skipped and converged.
For a cell with strong service capability, when the base station site is screened, not only can the screening be set to meet the set network performance index requirement, but also the total range of the screened site can be limited, specifically, the base station site can be screened through the following quantitative evaluation function:
fobj(x)＝C1*fRS_RSRP(x)+C2*fRS_RSRQ(x)+C3*fcost(x)
wherein,
fobj(x)representing a set quantitative evaluation function;
fRS_RSRP(x)the RSRP coverage rate is represented, and is set as the ratio of the number of the RSRPs which are larger than a first threshold value in the RSRPs which are received by each route point and come from each TD-LTE wireless network cell to the number of all the RSRPs received by each route point;
fRS_RSRQ(x)the RSRQ coverage rate is represented, and the RSRQ coverage rate is set as the ratio of the number of the RSRQ which is larger than a second threshold value in the RSRQ received by each route point from each TD-LTE wireless network cell to the number of all the RSRQ received by each route point;
fcost(x)the number of the station addresses is represented, the number of the station addresses is set as the ratio of a difference value and a preset upper limit of the number of the station addresses, the difference value is the difference between the preset upper limit of the number of the station addresses and the total number of the selectable station addresses, and the total number of the selectable station addresses represents the number of the station addressesThe total number of the screened base station sites;
Cirespectively represents fRS_RSRP(x)、fRS_RSRQ(x)And fcost(x)The corresponding weight, i, is 1, 2, 3.
Aiming at the weak service capacity cell, the base station address to be added can be automatically determined according to the base station address of the TD-SCDMA wireless network corresponding to the weak service capacity cell and the coverage capacity of the TD-LTE base station, and the base station address to be added is determined as the base station address of the TD-LTE wireless network. For example, at least one base station site to be added can be automatically determined according to the position of each weak service capability cell and the coverage capability of the TD-LTE base station. Certainly, the base station address of the TD-SCDMA wireless network corresponding to the weak service capability cell may also be determined as the base station address of the TD-LTE wireless network.
According to the schemes provided by the first embodiment to the third embodiment of the invention, the accuracy of the determined base station site is improved according to the actual path loss, meanwhile, the base station site can be automatically screened by designing a quantitative evaluation function for automatic site selection, and the speed and the efficiency of determining the base station site can be improved by automatically adding the base station site.
Example four,
A fourth embodiment of the present invention provides a device for determining a base station address, where the structure of the device is shown in fig. 5, and the device includes:
the data acquisition module 11 is used for acquiring drive test data or frequency sweep data for a non-time division synchronous code division multiple access long term evolution (TD-LTE) wireless network; the path loss determining module 12 is configured to determine the path loss of the TD-LTE wireless network according to the obtained drive test data or sweep frequency data; the index selection module 13 is configured to determine a selected network performance index according to the determined path loss; the base station site determining module 14 is configured to determine a base station site where the selected network performance index meets the set requirement as a base station site of the TD-LTE wireless network.
The path loss determining module 12 is specifically configured to determine the path loss of the non-TD-LTE wireless network according to the obtained drive test data or sweep frequency data, and determine the path loss of the TD-LTE wireless network according to the path loss of the non-TD-LTE wireless network and a preset condition that needs to be met between the path loss of the non-TD-LTE wireless network and the path loss of the TD-LTE wireless network.
The path loss determining module 12 is specifically configured to determine, when receiving a signal from a TD-SCDMA wireless network cell at a route measurement point, a path loss of the signal from each TD-SCDMA wireless network cell to each route measurement point by using the following formula:
PLDT(n)＝PPccPch RSCP(Cell(sm))-Gainantenna(TDs)-PPccPch RSCP(DT(n))
wherein,
PLDT(n)representing the path loss of the signal from the mth TD-SCDMA wireless network cell (Sm) to the nth routing point DT (n);
PPccPch RSCP(Cell(sm))the signal transmitting power of a main common control physical channel PCCPCH of the mth TD-SCDMA wireless network cell (Sm) is represented;
Gainantenna(TDs)the antenna gain at the connection of the nth drive test point DT (n) and the mth TD-SCDMA wireless network cell (Sm) is represented;
PPccPch RSCP(DT(n))represents the received signal code power RSCP received at the nth drive test point DT (n) from the mth TD-SCDMA wireless network cell (Sm) main common control physical channel.
The base station site determining module 14 is specifically configured to determine RSRP received by each drive test point from each TD-LTE wireless network cell according to the following formula:
RSRP(DT(n))＝PRS_cell(m)+Gainantenna(LTE)-PLDT(n)’
wherein, RSRP(DT(n))Indicating the RSRP received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell; pRS_cell(m)Represents the power of a transmitting signal received by the nth drive test point DT (n) from the mth TD-LTE wireless network cell (Lm); gainantenna(LTE)The antenna gain at the connection between the nth drive test point DT (n) and the mth TD-LTE wireless network cell (Lm) is represented; PLDT(n)' represents the path loss of a signal from the nth drive test point DT (n) to the mth TD-LTE wireless network cell (Lm);
and determining the RSRQ received by each drive test point from each TD-LTE wireless network cell by the following formula:
RSRQ(DT(n))＝RSRP(DT(n))-∑RSRP(DT_m)
wherein,
RSRQ(DT(n))the RSRQ received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell is represented; RSRP(DT(n))Indicating the strength of a reference signal RS received by an nth drive test point DT (n) from an mth TD-LTE wireless network cell (Lm); sigma RSRP(DT_m)Represents the sum of the RS strengths received from all non-serving cells by the nth drive test point dt (n).
The base station site determining module 14 is specifically configured to determine the number of drive test points served by each TD-LTE wireless network cell, and determine a strong service capability cell and a weak service capability cell, where the strong service capability cell is the TD-LTE wireless network cell whose number of drive test points is greater than a threshold, and the weak service capability cell is the TD-LTE wireless network cell whose number of drive test points is not greater than the threshold; determining a base station site corresponding to a cell with strong service capability in a TD-SCDMA wireless network and a base station site corresponding to a cell with weak service capability; screening out base station sites from the base station sites corresponding to the determined cells with strong service capacity, wherein the selected network performance indexes corresponding to the screened base station sites meet the set requirements; determining a base station address to be added for the determined weak service capacity cell according to the base station address corresponding to the determined weak service capacity cell and the coverage capacity of the TD-LTE base station; and determining the screened base station address and the determined base station address to be added as the base station address of the TD-LTE wireless network.
The base station site determining module 14 is specifically configured to screen out a base station site from the base station sites corresponding to the determined cells with strong service capabilities by using a convergence determination manner.
The base station site determining module 14 is specifically configured to perform convergence judgment according to the following quantitative evaluation function:
fobj(x)＝C1*fRS_RSRP(x)+C2*fRS_RSRQ(x)+C3*fcost(x)
wherein,
fobj(x)representing a set quantitative evaluation function;
fRS_RSRP(x)the RSRP coverage rate is represented, and is set as the ratio of the number of the RSRPs which are larger than a first threshold value in the RSRPs which are received by each route point and come from each TD-LTE wireless network cell to the number of all the RSRPs received by each route point;
fRS_RSRQ(x)the RSRQ coverage rate is represented, and the RSRQ coverage rate is set as the ratio of the number of the RSRQ which is larger than a second threshold value in the RSRQ received by each route point from each TD-LTE wireless network cell to the number of all the RSRQ received by each route point;
fcost(x)representing the number of the station addresses, wherein the number of the station addresses is set as the ratio of a difference value to the upper limit of the number of the preset station addresses, the difference value is the difference between the upper limit of the number of the preset station addresses and the total number of the selectable station addresses, and the total number of the selectable station addresses represents the total number of the station addresses of the base station for screening;
Cirespectively represents fRS_RSRP(x)、fRS_RSRQ(x)And fcost(x)The corresponding weight, i, is 1, 2, 3.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A method for determining a site of a base station, the method comprising:
acquiring drive test data or frequency sweep data aiming at a non-time division synchronous code division multiple access long term evolution TD-LTE wireless network; and are
Determining the path loss of the TD-LTE wireless network according to the obtained drive test data or sweep frequency data;
determining the path loss of the non-TD-LTE wireless network according to the obtained drive test data or frequency sweep data, which specifically comprises the following steps: when receiving signals from TD-SCDMA wireless network cells at the route measurement points, determining the path loss of the signals from each TD-SCDMA wireless network cell to each route measurement point by using the following formula:
PLDT(n)＝PPccPch RSCP(Cell(sm))－Gainantenna(TDs)－PPccPch RSCP(DT(n))
wherein PLDT(n)Representing the path loss of the signal from the mth TD-SCDMA wireless network cell (Sm) to the nth routing point DT (n); pPccPch RSCP(Cell(sm))The signal transmitting power of a main common control physical channel PCCPCH of the mth TD-SCDMA wireless network cell (Sm) is represented; gainantenna(TDs)The antenna gain at the connection of the nth drive test point DT (n) and the mth TD-SCDMA wireless network cell (Sm) is represented; pPccPch RSCP(DT(n))The received signal code power RSCP received at the nth drive test point DT (n) from the mth TD-SCDMA wireless network cell (Sm) main common control physical channel;
determining the path loss of the TD-LTE wireless network according to the path loss of the non-TD-LTE wireless network and a preset condition required to be met between the path loss of the non-TD-LTE wireless network and the path loss of the TD-LTE wireless network; the non-TD-LTE wireless network is a time division synchronous code division multiple access TD-SCDMA wireless network;
determining a selected network performance index according to the determined path loss;
and determining the base station address of the TD-LTE wireless network as the base station address of the selected network performance index meeting the set requirement.
2. The method of claim 1, wherein the selected network performance metrics include reference signal received power, RSRP, coverage and reference signal received quality, RSRQ, coverage;
the RSRP coverage rate refers to the ratio of the number of the RSRPs which are larger than a first threshold value in the RSRPs received by each route point from each TD-LTE wireless network cell to the number of all the RSRPs received by each route point; the RSRQ coverage requirement refers to the ratio of the number of the RSRQs which are larger than a second threshold value in the RSRQs received by each route point from each TD-LTE wireless network cell to the number of all the RSRQs received by each route point.
3. The method of claim 1, wherein the RSRP received by each drive test point from each TD-LTE wireless network cell is determined by the formula:
RSRP(DT(n))＝PRS_cell(m)+Gainantenna(LTE)-PLDT(n)’
wherein,
RSRP(DT(n))indicating the RSRP received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell;
PRS_cell(m)represents the power of a transmitting signal received by the nth drive test point DT (n) from the mth TD-LTE wireless network cell (Lm);
Gainantenna(LTE)the antenna gain at the connection between the nth drive test point DT (n) and the mth TD-LTE wireless network cell (Lm) is represented;
PLDT(n)' represents the path loss of a signal from the nth drive test point DT (n) to the mth TD-LTE wireless network cell (Lm);
determining the RSRQ received by each drive test point from each TD-LTE wireless network cell by the following formula:
RSRQ(DT(n))＝RSRP(DT(n))－∑RSRP(DT_m)
wherein,
RSRQ(DT(n))the RSRQ received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell is represented;
RSRP(DT(n))indicating the strength of a reference signal RS received by an nth drive test point DT (n) from an mth TD-LTE wireless network cell (Lm);
∑RSRP(DT_m)represents the sum of the RS strengths received by the nth drive test point dt (n) from all non-serving cells, which are TD-LTE wireless network cells other than the TD-LTE wireless network cell that causes the nth drive test point to obtain the strongest RSRP.
4. The method of claim 1, wherein determining a base station site with a selected network performance index meeting a set requirement as a base station site of the TD-LTE wireless network specifically comprises:
determining the number of route measuring points served by each TD-LTE wireless network cell;
determining a strong service capability cell and a weak service capability cell, wherein the strong service capability cell is a TD-LTE wireless network cell with the service drive test point number larger than a threshold value, and the weak service capability cell is a TD-LTE wireless network cell with the service drive test point number not larger than the threshold value;
determining a base station site corresponding to a cell with strong service capability in a TD-SCDMA wireless network and a base station site corresponding to a cell with weak service capability;
screening out base station sites from the base station sites corresponding to the determined cells with strong service capacity, wherein the selected network performance indexes corresponding to the screened base station sites meet the set requirements;
determining a base station address to be added for the determined weak service capacity cell according to the base station address corresponding to the determined weak service capacity cell and the coverage capacity of the TD-LTE base station;
and determining the screened base station address and the determined base station address to be added as the base station address of the TD-LTE wireless network.
5. The method of claim 4, wherein the step of screening the base station site corresponding to the determined cell with strong service capability comprises:
and screening the base station address from the base station address corresponding to the determined cell with strong service capacity by using a convergence judgment mode.
6. The method of claim 5, wherein the convergence determination is made according to the following quantitative evaluation function:
fobj(x)＝C1*fRS_RSRP(x)+C2*fRS_RSRQ(x)+C3*fcost(x)
wherein,
fobj(x)representing a set quantitative evaluation function;
fRS_RSRP(x)the RSRP coverage rate is represented, and is set as the ratio of the number of the RSRPs which are larger than a first threshold value in the RSRPs which are received by each route point and come from each TD-LTE wireless network cell to the number of all the RSRPs received by each route point;
fRS_RSRQ(x)the RSRQ coverage rate is represented, and the RSRQ coverage rate is set as the ratio of the number of the RSRQ which is larger than a second threshold value in the RSRQ received by each route point from each TD-LTE wireless network cell to the number of all the RSRQ received by each route point;
fcost(x)representing the number of the station addresses, wherein the number of the station addresses is set as the ratio of a difference value to the upper limit of the number of the preset station addresses, the difference value is the difference between the upper limit of the number of the preset station addresses and the total number of the selectable station addresses, and the total number of the selectable station addresses represents the total number of the station addresses of the base station for screening;
Cirespectively represents fRS_RSRP(x)、fRS_RSRQ(x)And fcost(x)The corresponding weight, i, is 1, 2, 3.
7. An apparatus for determining a site of a base station, the apparatus comprising:
the data acquisition module is used for acquiring drive test data or frequency sweep data aiming at a non-time division synchronous code division multiple access long term evolution TD-LTE wireless network;
the path loss determining module is used for determining the path loss of the TD-LTE wireless network according to the obtained drive test data or sweep frequency data; determining the path loss of the non-TD-LTE wireless network according to the obtained drive test data or frequency sweep data, which specifically comprises the following steps: when receiving signals from TD-SCDMA wireless network cells at the route measurement points, determining the path loss of the signals from each TD-SCDMA wireless network cell to each route measurement point by using the following formula: PLDT(n)＝PPccPch RSCP(Cell(sm))－Gainantenna(TDs)－PPccPch RSCP(DT(n))
Wherein PLDT(n)Representing the path loss of the signal from the mth TD-SCDMA wireless network cell (Sm) to the nth routing point DT (n); pPccPch RSCP(Cell(sm))The signal transmitting power of a main common control physical channel PCCPCH of the mth TD-SCDMA wireless network cell (Sm) is represented; gainantenna(TDs)The antenna gain at the connection of the nth drive test point DT (n) and the mth TD-SCDMA wireless network cell (Sm) is represented; pPccPch RSCP(DT(n))The received signal code power RSCP received at the nth drive test point DT (n) from the mth TD-SCDMA wireless network cell (Sm) main common control physical channel; determining the path loss of the TD-LTE wireless network according to the path loss of the non-TD-LTE wireless network and a preset condition required to be met between the path loss of the non-TD-LTE wireless network and the path loss of the TD-LTE wireless network;
the index selection module is used for determining the selected network performance index according to the determined path loss;
and the base station site determining module is used for determining the base station site of which the selected network performance index meets the set requirement as the base station site of the TD-LTE wireless network.
8. The apparatus of claim 7, wherein the base station site determining module is specifically configured to determine the RSRP received by each drive test point from each TD-LTE wireless network cell by:
RSRP(DT(n))＝PRS_cell(m)+Gainantenna(LTE)-PLDT(n)’
wherein, RSRP(DT(n))Indicating the RSRP received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell; pRS_cell(m)Represents the power of a transmitting signal received by the nth drive test point DT (n) from the mth TD-LTE wireless network cell (Lm); gainantenna(LTE)The antenna gain at the connection between the nth drive test point DT (n) and the mth TD-LTE wireless network cell (Lm) is represented; PLDT(n)' represents the path loss of a signal from the nth drive test point DT (n) to the mth TD-LTE wireless network cell (Lm);
and determining the RSRQ received by each drive test point from each TD-LTE wireless network cell by the following formula:
RSRQ(DT(n))＝RSRP(DT(n))－∑RSRP(DT_m)
wherein,
RSRQ(DT(n))the RSRQ received by the nth driving test point DT (n) from the mth TD-LTE wireless network cell is represented; RSRP(DT(n))Indicating the strength of a reference signal RS received by an nth drive test point DT (n) from an mth TD-LTE wireless network cell (Lm); sigma RSRP(DT_m)Represents the sum of the RS strengths received from all non-serving cells by the nth drive test point dt (n).
9. The apparatus of claim 7, wherein the base station site determining module is specifically configured to determine a number of drive test points served by each TD-LTE wireless network cell, and determine a strong service capability cell and a weak service capability cell, where the strong service capability cell is the TD-LTE wireless network cell whose number of drive test points served is greater than a threshold, and the weak service capability cell is the TD-LTE wireless network cell whose number of drive test points served is not greater than the threshold; determining a base station site corresponding to a cell with strong service capability in a TD-SCDMA wireless network and a base station site corresponding to a cell with weak service capability; screening out base station sites from the base station sites corresponding to the determined cells with strong service capacity, wherein the selected network performance indexes corresponding to the screened base station sites meet the set requirements; determining a base station address to be added for the determined weak service capacity cell according to the base station address corresponding to the determined weak service capacity cell and the coverage capacity of the TD-LTE base station; and determining the screened base station address and the determined base station address to be added as the base station address of the TD-LTE wireless network.
10. The apparatus of claim 9, wherein the base station address determining module is specifically configured to use a convergence determination method to screen out the base station address from the base station addresses corresponding to the determined cells with strong service capabilities.
11. The apparatus of claim 10, wherein the base station site determining module is specifically configured to perform convergence determination according to the following quantitative evaluation function:
fobj(x)＝C1*fRS_RSRP(x)+C2*fRS_RSRQ(x)+C3*fcost(x)
wherein,
fobj(x)representing a set quantitative evaluation function;
fRS_RSRP(x)the RSRP coverage rate is represented, and is set as the ratio of the number of the RSRPs which are larger than a first threshold value in the RSRPs which are received by each route point and come from each TD-LTE wireless network cell to the number of all the RSRPs received by each route point;
fRS_RSRQ(x)the RSRQ coverage rate is represented, and the RSRQ coverage rate is set as the ratio of the number of the RSRQ which is larger than a second threshold value in the RSRQ received by each route point from each TD-LTE wireless network cell to the number of all the RSRQ received by each route point;
fcost(x)representing the number of the station addresses, wherein the number of the station addresses is set as the ratio of a difference value to the upper limit of the number of the preset station addresses, the difference value is the difference between the upper limit of the number of the preset station addresses and the total number of the selectable station addresses, and the total number of the selectable station addresses represents the total number of the station addresses of the base station for screening;
Cirespectively represents fRS_RSRP(x)、fRS_RSRQ(x)And fcost(x)The corresponding weight, i, is 1, 2, 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197201.1A CN102883332B (en) | 2011-07-14 | 2011-07-14 | Method and device for determining base station site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197201.1A CN102883332B (en) | 2011-07-14 | 2011-07-14 | Method and device for determining base station site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102883332A CN102883332A (en) | 2013-01-16 |
| CN102883332B true CN102883332B (en) | 2015-03-11 |
Family
ID=47484434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110197201.1A Active CN102883332B (en) | 2011-07-14 | 2011-07-14 | Method and device for determining base station site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102883332B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301993B (en) * | 2013-07-15 | 2018-02-23 | 中国移动通信集团设计院有限公司 | A kind of method and device of base station site positioning |
| CN104486770B (en) * | 2014-12-04 | 2018-10-19 | 中国联合网络通信集团有限公司 | A kind of selection method and device of long-term evolving network cell to be disposed |
| CN105072640B (en) * | 2015-07-02 | 2018-09-25 | 中国联合网络通信集团有限公司 | Determine the method and device of antenna-feed parameter |
| CN106454859B (en) * | 2016-09-19 | 2019-10-08 | 广东省电信规划设计院有限公司 | Access layer network dispositions method and system |
| CN106851674B (en) * | 2017-03-10 | 2019-10-25 | 广州杰赛科技股份有限公司 | Wireless Network Simulation method and system |
| CN109982333B (en) * | 2017-12-27 | 2021-12-28 | 中国移动通信集团广东有限公司 | TD-LTE (time division-long term evolution) deep coverage blind-repairing site selection method and system |
| CN112020072B (en) * | 2019-05-31 | 2023-04-07 | 中国移动通信集团河南有限公司 | Base station site selection method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845631A (en) * | 2005-04-06 | 2006-10-11 | 华为技术有限公司 | Method for realizing wireless communication system network planning |
| CN101715200A (en) * | 2009-11-04 | 2010-05-26 | 武汉虹翼信息有限公司 | Method for analyzing situation of mobile network by drive test data of sweep signal generator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7787891B2 (en) * | 2006-12-20 | 2010-08-31 | Intel Corporation | Mobile station localization apparatus, systems, and methods |
| KR20090080723A (en) * | 2008-01-22 | 2009-07-27 | 삼성전자주식회사 | Apparatus and method for plannig wireless network |
-
2011
- 2011-07-14 CN CN201110197201.1A patent/CN102883332B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845631A (en) * | 2005-04-06 | 2006-10-11 | 华为技术有限公司 | Method for realizing wireless communication system network planning |
| CN101715200A (en) * | 2009-11-04 | 2010-05-26 | 武汉虹翼信息有限公司 | Method for analyzing situation of mobile network by drive test data of sweep signal generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102883332A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102883332B (en) | Method and device for determining base station site | |
| EP2938115B1 (en) | Network coverage planning method and device of evolution communication system | |
| CN108260075B (en) | Addressing method and device for deployment position of base station | |
| CN101060689B (en) | A method and equipment for planning the communication system network | |
| US7136638B2 (en) | Method and system for analyzing a network environment and network parameters | |
| US11405800B2 (en) | System and method for 3D propagation modelling for planning of a radio network | |
| CN103906104B (en) | A kind of method and device for positioning covering cavity | |
| CN106879017B (en) | Method and device for judging coverage quality of LTE (Long term evolution) network | |
| CN106937306B (en) | A kind of network quality appraisal procedure and device | |
| CN105828365A (en) | LTE cell overlapping coverage analysis method based on MR data | |
| CN105744553B (en) | Network association analysis method and device | |
| CN111901750B (en) | Positioning method, positioning device, electronic equipment and storage medium | |
| US20190163846A1 (en) | Method and apparatus of using drive test data for propagation model calibration | |
| CN106535114A (en) | Method and system for positioning terminal on high-speed railway and the monitoring method and system for high-speed railway network | |
| CN102457872A (en) | Method and device for automatically optimizing adjacent cell | |
| CN101621808B (en) | Method and device for confirming cell coverage area | |
| CN103581957A (en) | Interference detection method, device and system | |
| CN101959169B (en) | Method and device for optimizing neighboring cells | |
| CN110620626B (en) | Automatic frequency selection method and device | |
| CN112351435B (en) | Method and device for evaluating different network coverage based on network positioning | |
| CN203136175U (en) | Public mobile communication base station testing system | |
| CN109982333B (en) | TD-LTE (time division-long term evolution) deep coverage blind-repairing site selection method and system | |
| Upadhyay et al. | Performance analysis of GSM network | |
| CN102857933B (en) | Testing method and equipment of indoor covering | |
| Sati et al. | A review on drive test and site selection for Mobile Radio Communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |