CN102883332A - Method and device for determining base station site - Google Patents

Method and device for determining base station site Download PDF

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Publication number
CN102883332A
CN102883332A CN2011101972011A CN201110197201A CN102883332A CN 102883332 A CN102883332 A CN 102883332A CN 2011101972011 A CN2011101972011 A CN 2011101972011A CN 201110197201 A CN201110197201 A CN 201110197201A CN 102883332 A CN102883332 A CN 102883332A
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wireless network
site
base station
drive test
cell
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CN102883332B (en
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李军
张曙光
马少杰
王磊
王永玲
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China Mobile Group Henan Co Ltd
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China Mobile Group Henan Co Ltd
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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

Method and the device of site, a kind of definite base station
Technical field
The present invention relates to the mobile communication technology field, relate in particular to method and the device of site, a kind of definite base station.
Background technology
In Long Term Evolution (TD-SCDMA Long Term Evolution, TD-LTE) the wireless network stage of TD SDMA, the planning of site, base station is a very important job.Site, the base station planing method of existing TD-LTE wireless network is with prior wireless network, as the candidate BS site, determines the site, base station of TD-LTE wireless network such as the site, base station of GSM or TD-SCDMA from the candidate BS site.
Concrete, as shown in Figure 1, the method for the site, base station of existing definite TD-LTE wireless network may further comprise the steps:
Step 101, set up TD-LTE Internet communication model.
Step 102, utilize the sample testing data, described TD-LTE Internet communication model is proofreaied and correct.
Step 103, from site, candidate BS siting of station part base station.
In step 104, site, the base station importing network planning tool with selection, carry out coverage prediction.
For the propagation model after proofreading and correct, determine path loss, and parameter value corresponding to TD-LTE network traffic characteristics is set, utilize the site, described part base station of selecting, carry out coverage prediction.
Step 105, judge whether the coverage prediction result satisfies and cover requirement.
Cover requirement if the coverage prediction result satisfies, continue execution in step 106, otherwise, redirect execution in step 108.
Step 106, carry out Capacity Simulation.
Step 107, judge whether the Capacity Simulation result satisfies capacity requirement.
If the Capacity Simulation result satisfies capacity requirement, redirect execution in step 109, otherwise, continue execution in step 108.
Step 108, the manual screening of carrying out the site, base station or interpolation, and redirect execution in step 104.
When coverage prediction or Capacity Simulation result can not satisfy requiring of setting, manual screening or interpolation are carried out in the site, base station of selecting, and re-start coverage prediction and Capacity Simulation.
Step 109, site, the base station output that coverage prediction and Capacity Simulation result are met the demands.
The site, base station of output namely can be as the site, base station of the TD-LTE wireless network of determining.
There is following problem in the method for the site, base station of existing definite TD-LTE wireless network:
In the prior art, utilize the sample testing data, described TD-LTE Internet communication model is proofreaied and correct then calculating path loss.Because this path loss is an analogue value of determining according to the Internet communication model, the simulation result that obtains according to this path loss is difficult to truly reflect network coverage situation, when causing thus the site, base station of the TD-LTE wireless network determined according to this simulation result that the base station is set, can not reach the network overlapping effect of expection, that is site, the base station accuracy of the TD-LTE wireless network of, determining is lower.
Summary of the invention
The embodiment of the invention provides method and the device of site, a kind of definite base station, be used for to solve the lower problem of site, base station accuracy of the TD-LTE wireless network that prior art determines.
The method of site, a kind of definite base station, the method comprises:
Acquisition is for drive test data or the frequency sweep data of non-TD SDMA Long Term Evolution TD-LTE wireless network; And
According to the drive test data or the frequency sweep data that obtain, determine the path loss of TD-LTE wireless network;
Select network performance index according to the described path loss of determining;
The network performance index of selecting is satisfied the site, base station that the site, base station of setting requirement is defined as the TD-LTE wireless network.
The device of site, a kind of definite base station, this device comprises:
Data acquisition module is used for acquisition for drive test data or the frequency sweep data of non-TD SDMA Long Term Evolution TD-LTE wireless network;
The path loss determination module is used for determining the path loss of TD-LTE wireless network according to the drive test data or the frequency sweep data that obtain;
Index is selected module, is used for selecting network performance index according to the described path loss of determining;
Site, base station determination module, the network performance index that is used for selecting satisfy sets the site, base station that the site, base station that requires is defined as the TD-LTE wireless network.
The scheme that provides according to the embodiment of the invention, when determining the site, base station of TD-LTE wireless network, the Actual path loss that utilization is determined the TD-LTE wireless network for drive test data or the frequency sweep data of non-TD-LTE wireless network, and determine the network performance index selected according to this Actual path loss, the site, base station that the network performance index of selecting is met the demands is defined as the site, base station of TD-LTE wireless network.With respect to determining path loss according to the TD-LTE Internet communication model after proofreading and correct in the prior art, the path loss of determining owing to the embodiment of the invention has more authenticity, has guaranteed the accuracy of the TD-LTE wireless network base station site determined.
Description of drawings
The flow chart of steps of the method for the site, a kind of definite base station that Fig. 1 provides for prior art;
The flow chart of steps of the method for the site, a kind of definite base station that Fig. 2 provides for the embodiment of the invention one;
The flow chart of steps of the method for the site, a kind of definite base station that Fig. 3 provides for the embodiment of the invention two;
The flow chart of steps of the method for the site, a kind of automatic selection base station that Fig. 4 provides for the embodiment of the invention three;
The structural representation of the device of the site, a kind of definite base station that Fig. 5 provides for the embodiment of the invention four.
Embodiment
For the lower problem of accuracy of the TD-LTE wireless network base station site of determining in the prior art, the embodiment of the invention provides a kind of scheme of determining the site, base station according to the Actual path loss, improves the accuracy of the site, base station of determining.Simultaneously, in prior art, when simulation result can not satisfy requiring of setting, need to carry out manual screening or interpolation to the site, base station of selecting, this screening or interpolation rely on operator's subjective experience, randomness is stronger, and be difficult to determine rapidly the problem of site, base station, the embodiment of the invention further provides for strong service ability residential quarter carries out the screening of corresponding site, base station and the scheme of automatically carrying out the interpolation of site, base station for weak service ability residential quarter automatically, the site, base station of determining to satisfy the network performance index of setting, in the accuracy of the site, base station that raising is determined, improve speed and the efficient of determining the site, base station.
In various embodiments of the present invention, drive test data refers to use test mobile phone, GPS testing equipment, then processed by the metrical information of drive test software read test mobile phone and in conjunction with GPS information, output comprises test point longitude, latitude, receives the field intensity of Serving cell and the data of the field intensity information of a plurality of adjacent cells of receiving.
The frequency sweep data refer to use sweep generator that the frequency of affiliated band limits is carried out one by one sweep test, obtain to comprise longitude, the latitude of test point and the data from the signal strength information of different districts that receive.
Below in conjunction with Figure of description and each embodiment the present invention program is described.
Embodiment one,
The embodiment of the invention one provides the method for site, a kind of definite base station, and the steps flow chart of the method comprises as shown in Figure 2:
Step 201, acquisition are for non-TD-LTE radio network route measuring data or frequency sweep data.
The wireless network of existing comparative maturity has global system for mobile communications (Global System of Mobile communication, GSM), TD SDMA (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA), the multiple types such as code division multiple access (Code Division Multiple Access, CDMA) 2000.When determining the site, base station of TD-LTE wireless network, can come according to the site, base station of a prior wireless network site, base station of Analysis deterrmination TD-LTE wireless network.Because the working frequency range of TD-SCDMA and the working frequency range of TD-LTE approach, and the coverage of TD-SCDMA wireless network in each city begins to take shape, in various embodiments of the present invention, can analyze by means of the TD-SCDMA wireless network that is operated under the 2GHz frequency range.Concrete, in this step, can gather drive test data or frequency sweep data at the TD-SCDMA wireless network.
Step 202, determine the path loss of TD-LTE wireless network.
In this step, after the TD-SCDMA wireless network gathers drive test data or frequency sweep data, can determine the path loss of TD-SCDMA wireless network.Can be pre-conditioned according to what need between the path loss of the path loss of TD-SCDMA wireless network and TD-LTE wireless network to satisfy, determine the path loss of TD-LTE wireless network.Concrete, can be according to the site, base station of TD-LTE wireless network and TD-SCDMA wireless network because the consistent deviation that frequency range difference causes, determine the difference between the path loss of the path loss of TD-LTE wireless network and TD-SCDMA wireless network, thereby according to the drive test data of self or after the frequency sweep data determine the path loss of self, can determine according to described difference the path loss of TD-LTE wireless network at the TD-SCDMA wireless network.
Described difference can be predetermined in the following manner: in the TD-SCDMA wireless network, gather respectively one group of test data in TD-SCDMA frequency range and TD-LTE frequency range, and determine respectively the path loss of TD-SCDMA frequency range and TD-LTE frequency range.The TD-SCDMA wireless network of determining is considered as the path loss of TD-LTE wireless network in the path loss of TD-LTE frequency range, differential loss between the path loss of statistical analysis TD-SCDMA frequency range and TD-LTE frequency range, and this differential loss is defined as difference between the path loss of the path loss of TD-SCDMA wireless network and TD-LTE wireless network.
The described path loss that step 203, basis are determined is determined the network performance index of selecting.
Because network performance index is relevant with path loss, therefore, can after determining path loss, determine the concrete numerical value of each network performance index.Can set according to actual needs needs satisfied network performance index, and concrete, in the present embodiment, described network performance index can comprise Reference Signal Received Power RSRP coverage rate and Reference Signal Received Quality RSRQ coverage rate.
Wherein, among the RSRP from each TD-LTE wireless network cell that described RSRP coverage rate requires to refer to each drive test point is received, requirement greater than the quantity of the RSRP of the first threshold value, among the RSRQ from described each TD-LTE wireless network cell that described RSRQ coverage rate requires to refer to each drive test point is received, greater than the requirement of the quantity of the RSRQ of the second threshold value.
Step 204, determine the site, base station of TD-LTE wireless network.
This step comprises: the network performance index of selecting is satisfied set the site, base station that the site, base station that requires is defined as the TD-LTE wireless network.To the setting requirement of the network performance index selected can for the RSRP coverage rate greater than the first limit value, and the RSRQ coverage rate is greater than the second limit value.
In this step, can according to the site, base station of existing TD-SCDMA wireless network, determine that the network performance index of selecting satisfies the site, base station of setting requirement.
Describe below by the scheme of a concrete example to the embodiment of the invention one.
Embodiment two,
The embodiment of the invention two provides the method for site, a kind of definite base station, and the steps flow chart of the method comprises as shown in Figure 3:
Step 301, a newly-built project file.
Step 302, import relevant data to this project file.
Described relevant data comprise:
Site, the base station information (such as latitude and longitude information) of TD-SCDMA wireless network, the drive test data of TD-SCDMA wireless network or frequency sweep data, the antenna foundation data that TD-SCDMA wireless network and TD-LTE wireless network use.For the ease of showing the site, base station, described relevant data can also comprise numerical map.
Step 303, addressing constraints is set.
Determine in the process of TD-LTE wireless network base station site at the present embodiment, not only can set the requirement of the network performance index selected, can also retrain other conditions.For example, addressing constraints can comprise the maximum of the TD-LTE wireless network base station site quantity of determining, the threshold value of the network performance index that each is set.
Step 304, automatically select the site, base station.
This step comprises: determine the path loss of TD-LTE wireless network according to the path loss of the TD-SCDMA wireless network of determining, and can be according to described path loss, determine to satisfy the site, base station of the TD-LTE wireless network of described constraints.
The TD-LTE wireless network base station site that step 305, output are selected.
In the TD-LTE wireless network base station site that the output of this step is selected, can also export the numerical value of each network performance index, be convenient to the follow-up network coverage situation of checking.
The below provides the method for site, a kind of automatic selection base station to utilize drive test data to determine path loss as example by embodiment three.Among the embodiment three below, can set the drive test data that gathers N drive test point, each drive test point be designated as respectively DT (1), DT (2), DT (3) ..., DT (N).Suppose that each drive test point can receive the signal of M TD-SCDMA wireless network cell, described M can be set as and be not more than 32, each TD-SCDMA wireless network cell be designated as respectively Cell (S1), Cell (S2), Cell (S3) ..., Cell (SM).In the process of determining TD-LTE wireless network base station site, can set each TD-LTE wireless network cell corresponding one by one with each TD-SCDMA wireless network cell, corresponding, each TD-LTE wireless network cell can be designated as respectively Cell (L1), Cell (L2), Cell (L3) ..., Cell (LM).
Embodiment three,
The embodiment of the invention three provides the method for site, a kind of automatic selection base station, is illustrated in figure 4 as the flow chart of steps of the method, comprising:
Step 401, determine the path loss of TD-SCDMA wireless network.
In this step, for each drive test point, can but be not limited to utilize following formula to determine that each TD-SCDMA wireless network cell is to the path loss of this drive test point:
PL DT(n)＝P PccPch?RSCP(Cell(sm))-Gain antenna(TDs)-P PccPch?RSCP(DT(n))
Wherein,
PL DT (n)Path loss when representing signal from m TD-SCDMA wireless network cell Cell (Sm) to n drive test point DT (n);
P PccPch RSCP (Cell (sm))The signal transmission power that represents the Primary Common Control Physical Channel (Primary Common Control Physical Channel, PCCPCH) of m TD-SCDMA wireless network cell Cell (Sm);
Gain Antenna (TDs)The antenna gain that represents n drive test point DT (n) and m TD-SCDMA wireless network cell Cell (Sm) line place;
P PccPch RSCP (DT (n))Represent the received signal code power from m TD-SCDMA wireless network cell Cell (Sm) Primary Common Control Physical Channel (Received Signal Code Power, RSCP) that n drive test point DT (n) locates to receive.
Step 402, determine the path loss of TD-LTE wireless network.
For each drive test point, determine each TD-SCDMA wireless network cell to the path loss of this drive test point, can be according to the fixedly difference between the path loss that produces in the path loss that produces in the TD-SCDMA wireless network and the TD-LTE wireless network, for each drive test point, determine that the corresponding TD-LTE wireless network cell of each TD-SCDMA wireless network cell is to the path loss of this drive test point.In the present embodiment, with step 301 in the PL that determines DT (n)Corresponding, the path loss of n drive test point of m TD-LTE wireless network cell to the can be used PL DT (n)' represent.
Step 403, determine RSRP and RSRQ.
In the present embodiment, RSRP coverage rate and RSRQ coverage rate can be defined as network performance index to be satisfied.
Can determine the RSRP from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRP (DT(n))＝P RS_cell(m)+Gain antenna(LTE)-PL DT(n)’
Wherein,
RSRP (DT (n))Represent the RSRP from m TD-LTE wireless network cell that n drive test point DT (n) receives;
P RS_cell (m)Represent the transmit signal power from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives;
Gain Antenna (LTE)The antenna gain that represents n drive test point DT (n) and m TD-LTE wireless network cell Cell (Lm) line place;
PL DT (n)' path loss of expression signal from n drive test point DT (n) to m TD-LTE wireless network cell Cell (Lm);
Can determine the RSRQ from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRQ (DT(n))＝RSRP (DT(n))-∑RSRP (DT_m)
Wherein,
RSRQ (DT (n))Represent the RSRQ from m TD-LTE wireless network cell that n drive test point DT (n) receives;
RSRP (DT (n))Represent the reference signal RS intensity from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives;
∑ RSRP (DT_m)Represent the RS intensity sum from all non-service cells that n drive test point DT (n) receives, described non-service cell is for except so that n drive test point acquisition TD-LTE wireless network cell the TD-LTE wireless network cell of the strongest RSRP.
Step 404, determine strong service ability residential quarter and weak service ability residential quarter.
Concrete, the present embodiment is when determining the site, base station of TD-LTE wireless network, can be according to the site, base station of existing TD-SCDMA wireless network, carry out the screening of site, base station and carry out the interpolation of site, base station for weak service ability residential quarter for strong service ability residential quarter respectively, described strong service ability residential quarter refers to the drive test point quantity of serving greater than the TD-LTE wireless network cell of threshold value, and described weak service ability residential quarter refers to that the drive test point quantity of serving is not more than the TD-LTE wireless network cell of threshold value.
Therefore, in this step, can determine the drive test point quantity of each TD-LTE wireless network cell service, the drive test point quantity of service is defined as strong service ability residential quarter greater than the TD-LTE wireless network cell of threshold value, service ability residential quarter a little less than the TD-LTE wireless network cell that the drive test point quantity of service is not more than threshold value is defined as.
Step 405, determine the site, screening base station that strong service ability residential quarter is corresponding, and, determine weak site, interpolation base station corresponding to service ability residential quarter.
This step comprises, according to the site, base station of the TD-SCDMA wireless network that pre-enters, determines respectively site, base station corresponding to site, base station and weak service ability residential quarter corresponding to strong service ability residential quarter.
For strong service ability residential quarter, can from the site, base station of TD-SCDMA wireless network corresponding to described strong service ability residential quarter, filter out site, part base station that network performance index that satisfy to set requires as the site, base station of the TD-LTE wireless network of determining.In the present embodiment, can utilize the convergence judgment mode to determine the site, base station that the satisfied network performance index of setting requires.Concrete convergence deterministic process can restrain and judgement for the number of times of foundation RSRP coverage rate desired value, RS RSRQ coverage rate desired value and cyclic search and assessment.When RSRP coverage rate and RS RSRQ coverage rate all satisfy its desired value, and cycle-index is normal convergence when cycle-index is set; At least one discontented foot-eye value in RSRP coverage rate and RSRQ coverage rate, and cycle-index reaches the cycle-index of setting, and restrain for jumping out circulation this moment.
For strong service ability residential quarter, when carrying out the screening of site, base station, not only can set screening and satisfy the network performance index requirement of setting, can also limit its site sum scope that filters out, concrete, can carry out the screening of site, base station by following quantitative evaluation function:
f obj(x)＝C 1*f RS_RSRP(x)+C 2*f RS_RSRQ(x)+C 3*f cost(x)
Wherein,
f Obj (x)The quantitative evaluation function that expression is set;
f RS_RSRP (x)Expression RSRP coverage rate, and the RSRP coverage rate is set as among the RSRP from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRP of the first threshold value and all RSRP that each drive test point receives;
f RS_RSRQ (x)Expression RSRQ coverage rate, and the RSRQ coverage rate is set as among the RSRQ from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRQ of the second threshold value and all RSRQ that each drive test point receives;
f Cost (x)Expression site quantity, and site quantity is set as difference and the ratio of the upper limit is counted in default site, and described difference is counted the poor of the upper limit and selectable site sum for default site, site, the base station sum that described selectable site sum expression is screened;
C iRepresent respectively f RS_RSRP (x), f RS_RSRQ (x)And f Cost (x)Corresponding weights, i=1,2,3.
For weak service ability residential quarter, can be according to the site, base station of TD-SCDMA wireless network corresponding to service ability residential quarter a little less than this and the covering power of TD-LTE base station, automatically determine site, base station to be added, and described site, base station to be added is defined as the site, base station of TD-LTE wireless network.As, can according to the position at place, service ability residential quarter a little less than each and the covering power of TD-LTE base station, automatically determine at least one site, base station to be added.Certainly, the site, base station of TD-SCDMA wireless network corresponding to this weak service ability residential quarter also can be defined as the site, base station of TD-LTE wireless network.
The scheme that provides according to the embodiment of the invention one～embodiment three, when loss improves the accuracy of the site, base station of determining according to Actual path, can also be by the quantitative evaluation function of design automatic addressing, automatically carry out the screening of site, base station, and the interpolation that can automatically carry out the site, base station improves speed and the efficient of determining the site, base station.
Embodiment four,
The embodiment of the invention four provides the device of site, a kind of definite base station, and the structure of this device comprises as shown in Figure 5:
Data acquisition module 11 is used for acquisition for drive test data or the frequency sweep data of non-TD SDMA Long Term Evolution TD-LTE wireless network; Path loss determination module 12 is used for determining the path loss of TD-LTE wireless network according to the drive test data or the frequency sweep data that obtain; Index selects module 13 to be used for determining according to the described path loss of determining the network performance index of selection; The network performance index that site, base station determination module 14 is used for selecting satisfies sets the site, base station that the site, base station that requires is defined as the TD-LTE wireless network.
Path loss determination module 12 concrete drive test data or the frequency sweep data that are used for according to acquisition, determine the path loss of this non-TD-LTE wireless network, path loss according to this non-TD-LTE wireless network, pre-conditioned according to what need between the path loss of the path loss of non-TD-LTE wireless network and TD-LTE wireless network to satisfy, determine the path loss of TD-LTE wireless network.
Path loss determination module 12 is concrete to be used for utilizing following formula to determine the path loss of signal from described each TD-SCDMA wireless network cell to each drive test point when drive test point receives signal from the TD-SCDMA wireless network cell:
PL DT(n)＝P PccPch?RSCP(Cell(sm))-Gain antenna(TDs)-P PccPch?RSCP(DT(n))
Wherein,
PL DT (n)Path loss when representing signal from m TD-SCDMA wireless network cell Cell (Sm) to n drive test point DT (n);
P PccPch RSCP (Cell (sm))The signal transmission power that represents the Primary Common Control Physical Channel PCCPCH of m TD-SCDMA wireless network cell Cell (Sm);
Gain Antenna (TDs)The antenna gain that represents n drive test point DT (n) and m TD-SCDMA wireless network cell Cell (Sm) line place;
P PccPch RSCP (DT (n))Represent the received signal code power RSCP from m TD-SCDMA wireless network cell Cell (Sm) Primary Common Control Physical Channel that n drive test point DT (n) locates to receive.
Site, base station determination module 14 is concrete for determining the RSRP from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRP (DT(n))＝P RS_cell(m)+Gain antenna(LTE)-PL DT(n)’
Wherein, RSRP (DT (n))Represent the RSRP from m TD-LTE wireless network cell that n drive test point DT (n) receives; P RS_cell (m)Represent the transmit signal power from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives; Gain Antenna (LTE)The antenna gain that represents n drive test point DT (n) and m TD-LTE wireless network cell Cell (Lm) line place; PL DT (n)' path loss of expression signal from n drive test point DT (n) to m TD-LTE wireless network cell Cell (Lm);
And, determine the RSRQ from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRQ (DT(n))＝RSRP (DT(n))-∑RSRP (DT_m)
Wherein,
RSRQ (DT (n))Represent the RSRQ from m TD-LTE wireless network cell that n drive test point DT (n) receives; RSRP (DT (n))Represent the reference signal RS intensity from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives; ∑ RSRP (DT_m)Represent the RS intensity sum from all non-service cells that n drive test point DT (n) receives.
Site, the base station determination module 14 concrete drive test point quantity that are used for determining each TD-LTE wireless network cell service, and determine that strong service ability residential quarter reaches weak service ability residential quarter, described strong service ability residential quarter refers to the drive test point quantity of serving greater than the TD-LTE wireless network cell of threshold value, and described weak service ability residential quarter refers to that the drive test point quantity of serving is not more than the TD-LTE wireless network cell of threshold value; Determine strong site, base station corresponding to service ability residential quarter in the TD-SCDMA wireless network, and site, base station corresponding to weak service ability residential quarter; Filter out the site, base station in site, base station corresponding to the strong service ability residential quarter of determining, the network performance index of the selection that the site, base station that wherein filters out is corresponding satisfies sets requirement; According to site, base station corresponding to the weak service ability residential quarter of determining and the covering power of TD-LTE base station, for determining site, base station to be added in the weak service ability residential quarter of determining; With the site, base station that filters out and the site, base station to be added of determining, be defined as the site, base station of TD-LTE wireless network.
Site, base station determination module 14 is concrete in site, base station corresponding to strong service ability residential quarter of determining, and utilizes the convergence judgment mode therefrom to filter out the site, base station.
Site, base station determination module 14 is concrete for restraining judgement according to following quantitative evaluation function:
f obj(x)＝C 1*f RS_RSRP(x)+C 2*f RS_RSRQ(x)+C 3*f cost(x)
Wherein,
f Obj (x)The quantitative evaluation function that expression is set;
f RS_RSRP (x)Expression RSRP coverage rate, and the RSRP coverage rate is set as among the RSRP from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRP of the first threshold value and all RSRP that each drive test point receives;
f RS_RSRQ (x)Expression RSRQ coverage rate, and the RSRQ coverage rate is set as among the RSRQ from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRQ of the second threshold value and all RSRQ that each drive test point receives;
f Cost (x)Expression site quantity, and site quantity is set as difference and the ratio of the upper limit is counted in default site, and described difference is counted the poor of the upper limit and selectable site sum for default site, site, the base station sum that described selectable site sum expression is screened;
C iRepresent respectively f RS_RSRP (x), f RS_RSRQ (x)And f Cost (x)Corresponding weights, i=1,2,3.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (16)

1. the method for site, a definite base station is characterized in that, the method comprises:
Acquisition is for drive test data or the frequency sweep data of non-TD SDMA Long Term Evolution TD-LTE wireless network; And
According to the drive test data or the frequency sweep data that obtain, determine the path loss of TD-LTE wireless network;
Determine the network performance index of selection according to the described path loss of determining;
The network performance index of selecting is satisfied the site, base station that the site, base station of setting requirement is defined as the TD-LTE wireless network.
2. the method for claim 1 is characterized in that, according to the drive test data or the frequency sweep data that obtain, determines the path loss of TD-LTE wireless network, specifically comprises:
According to the drive test data or the frequency sweep data that obtain, determine the path loss of this non-TD-LTE wireless network;
According to the path loss of this non-TD-LTE wireless network, pre-conditioned according to what need between the path loss of the path loss of non-TD-LTE wireless network and TD-LTE wireless network to satisfy, determine the path loss of TD-LTE wireless network.
3. method as claimed in claim 2 is characterized in that, described non-TD-LTE wireless network is TD SDMA TD-SCDMA wireless network.
4. method as claimed in claim 3 is characterized in that, determines the path loss of this non-TD-LTE wireless network according to the drive test data that obtains, and specifically comprises:
When drive test point receives signal from the TD-SCDMA wireless network cell, utilize following formula to determine the path loss of signal from described each TD-SCDMA wireless network cell to each drive test point:
PL DT(n)＝P PccPch?RSCP(Cell(sm))-Gain antenna(TDs)-P PccPch?RSCP(DT(n))
Wherein,
PL DT (n)Path loss when representing signal from m TD-SCDMA wireless network cell Cell (Sm) to n drive test point DT (n);
P PccPch RSCP (Cell (sm))The signal transmission power that represents the Primary Common Control Physical Channel PCCPCH of m TD-SCDMA wireless network cell Cell (Sm);
Gain Antenna (TDs)The antenna gain that represents n drive test point DT (n) and m TD-SCDMA wireless network cell Cell (Sm) line place;
P PccPch RSCP (DT (n))Represent the received signal code power RSCP from m TD-SCDMA wireless network cell Cell (Sm) Primary Common Control Physical Channel that n drive test point DT (n) locates to receive.
5. method as claimed in claim 3 is characterized in that, the network performance index of selection comprises Reference Signal Received Power RSRP coverage rate and Reference Signal Received Quality RSRQ coverage rate;
Wherein, described RSRP coverage rate refers among the RSRP from each TD-LTE wireless network cell that each drive test point receives, greater than the ratio of the quantity of the quantity of the RSRP of the first threshold value and all RSRP that each drive test point receives; Described RSRQ coverage rate requires to refer among the RSRQ from described each TD-LTE wireless network cell that each drive test point receives, greater than the ratio of the quantity of the quantity of the RSRQ of the second threshold value and all RSRQ that each drive test point receives.
6. method as claimed in claim 4 is characterized in that, determines the RSRP from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRP (DT(n))＝P RS_cell(m)+Gain antenna(LTE)-PL DT(n)’
Wherein,
RSRP (DT (n))Represent the RSRP from m TD-LTE wireless network cell that n drive test point DT (n) receives;
P RS_cell (m)Represent the transmit signal power from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives;
Gain Antenna (LTE)The antenna gain that represents n drive test point DT (n) and m TD-LTE wireless network cell Cell (Lm) line place;
PL DT (n)' path loss of expression signal from n drive test point DT (n) to m TD-LTE wireless network cell Cell (Lm);
Determine the RSRQ from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRQ (DT(n))＝RSRP (DT(n))-∑RSRP (DT_m)
Wherein,
RSRQ (DT (n))Represent the RSRQ from m TD-LTE wireless network cell that n drive test point DT (n) receives;
RSRP (DT (n))Represent the reference signal RS intensity from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives;
∑ RSRP (DT_m)Represent the RS intensity sum from all non-service cells that n drive test point DT (n) receives, described non-service cell is for except so that n drive test point acquisition TD-LTE wireless network cell the TD-LTE wireless network cell of the strongest RSRP.
7. method as claimed in claim 3 is characterized in that, the network performance index of selecting is satisfied set the site, base station that the site, base station that requires is defined as the TD-LTE wireless network, specifically comprises:
Determine the drive test point quantity of each TD-LTE wireless network cell service;
Determine strong service ability residential quarter and weak service ability residential quarter, described strong service ability residential quarter refers to the drive test point quantity of serving greater than the TD-LTE wireless network cell of threshold value, and described weak service ability residential quarter refers to that the drive test point quantity of serving is not more than the TD-LTE wireless network cell of threshold value;
Determine strong site, base station corresponding to service ability residential quarter in the TD-SCDMA wireless network, and site, base station corresponding to weak service ability residential quarter;
Filter out the site, base station in site, base station corresponding to the strong service ability residential quarter of determining, the network performance index of the selection that the site, base station that wherein filters out is corresponding satisfies sets requirement;
According to site, base station corresponding to the weak service ability residential quarter of determining and the covering power of TD-LTE base station, for determining site, base station to be added in the weak service ability residential quarter of determining;
With the site, base station that filters out and the site, base station to be added of determining, be defined as the site, base station of TD-LTE wireless network.
8. method as claimed in claim 7 is characterized in that, filters out the site, base station in site, base station corresponding to the strong service ability residential quarter of determining, and specifically comprises:
In site, base station corresponding to the strong service ability residential quarter of determining, utilize the convergence judgment mode therefrom to filter out the site, base station.
9. method as claimed in claim 8 is characterized in that, restrains judgement according to following quantitative evaluation function:
f obj(x)＝C 1*f RS_RSRP(x)+C 2*f RS_RSRQ(x)+C 3*f cost(x)
Wherein,
f Obj (x)The quantitative evaluation function that expression is set;
f RS_RSRP (x)Expression RSRP coverage rate, and the RSRP coverage rate is set as among the RSRP from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRP of the first threshold value and all RSRP that each drive test point receives;
f RS_RSRQ (x)Expression RSRQ coverage rate, and the RSRQ coverage rate is set as among the RSRQ from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRQ of the second threshold value and all RSRQ that each drive test point receives;
f Cost (x)Expression site quantity, and site quantity is set as difference and the ratio of the upper limit is counted in default site, and described difference is counted the poor of the upper limit and selectable site sum for default site, site, the base station sum that described selectable site sum expression is screened;
C iRepresent respectively f RS_RSRP (x), f RS_RSRQ (x)And f Cost (x)Corresponding weights, i=1,2,3.
10. the device of site, a definite base station is characterized in that, this device comprises:
Data acquisition module is used for acquisition for drive test data or the frequency sweep data of non-TD SDMA Long Term Evolution TD-LTE wireless network;
The path loss determination module is used for determining the path loss of TD-LTE wireless network according to the drive test data or the frequency sweep data that obtain;
Index is selected module, is used for determining according to the described path loss of determining the network performance index of selection;
Site, base station determination module, the network performance index that is used for selecting satisfy sets the site, base station that the site, base station that requires is defined as the TD-LTE wireless network.
11. device as claimed in claim 10 is characterized in that,
The path loss determination module, concrete being used for according to the drive test data or the frequency sweep data that obtain, determine the path loss of this non-TD-LTE wireless network, path loss according to this non-TD-LTE wireless network, pre-conditioned according to what need between the path loss of the path loss of non-TD-LTE wireless network and TD-LTE wireless network to satisfy, determine the path loss of TD-LTE wireless network.
12. device as claimed in claim 11, it is characterized in that, the path loss determination module, concrete being used for utilizes following formula to determine the path loss of signal from described each TD-SCDMA wireless network cell to each drive test point when drive test point receives signal from the TD-SCDMA wireless network cell:
PL DT(n)＝P PccPch?RSCP(Cell(sm))-Gain antenna(TDs)-P PccPch?RSCP(DT(n))
Wherein,
PL DT (n)Path loss when representing signal from m TD-SCDMA wireless network cell Cell (Sm) to n drive test point DT (n);
P PccPch RSCP (Cell (sm))The signal transmission power that represents the Primary Common Control Physical Channel PCCPCH of m TD-SCDMA wireless network cell Cell (Sm);
Gain Antenna (TDs)The antenna gain that represents n drive test point DT (n) and m TD-SCDMA wireless network cell Cell (Sm) line place;
P PccPch RSCP (DT (n))Represent the received signal code power RSCP from m TD-SCDMA wireless network cell Cell (Sm) Primary Common Control Physical Channel that n drive test point DT (n) locates to receive.
13. device as claimed in claim 12 is characterized in that, site, base station determination module, and concrete being used for determined the RSRP from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRP (DT(n))＝P RS_cell(m)+Gain antenna(LTE)-PL DT(n)’
Wherein, RSRP (DT (n))Represent the RSRP from m TD-LTE wireless network cell that n drive test point DT (n) receives; P RS_cell (m)Represent the transmit signal power from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives; Gain Antenna (LTE)The antenna gain that represents n drive test point DT (n) and m TD-LTE wireless network cell Cell (Lm) line place; PL DT (n)' path loss of expression signal from n drive test point DT (n) to m TD-LTE wireless network cell Cell (Lm);
And, determine the RSRQ from each TD-LTE wireless network cell that each drive test point receives by following formula:
RSRQ (DT(n))＝RSRP (DT(n))-∑RSRP (DT_m)
Wherein,
RSRQ (DT (n))Represent the RSRQ from m TD-LTE wireless network cell that n drive test point DT (n) receives; RSRP (DT (n))Represent the reference signal RS intensity from m TD-LTE wireless network cell Cell (Lm) that n drive test point DT (n) receives; ∑ RSRP (DT_m)Represent the RS intensity sum from all non-service cells that n drive test point DT (n) receives.
14. device as claimed in claim 12, it is characterized in that, site, base station determination module, the concrete drive test point quantity that is used for determining each TD-LTE wireless network cell service, and determine that strong service ability residential quarter reaches weak service ability residential quarter, described strong service ability residential quarter refers to the drive test point quantity of serving greater than the TD-LTE wireless network cell of threshold value, and described weak service ability residential quarter refers to that the drive test point quantity of serving is not more than the TD-LTE wireless network cell of threshold value; Determine strong site, base station corresponding to service ability residential quarter in the TD-SCDMA wireless network, and site, base station corresponding to weak service ability residential quarter; Filter out the site, base station in site, base station corresponding to the strong service ability residential quarter of determining, the network performance index of the selection that the site, base station that wherein filters out is corresponding satisfies sets requirement; According to site, base station corresponding to the weak service ability residential quarter of determining and the covering power of TD-LTE base station, for determining site, base station to be added in the weak service ability residential quarter of determining; With the site, base station that filters out and the site, base station to be added of determining, be defined as the site, base station of TD-LTE wireless network.
15. device as claimed in claim 14 is characterized in that, site, base station determination module, utilizes the convergence judgment mode therefrom to filter out the site, base station at concrete being used in site, base station corresponding to strong service ability residential quarter of determining.
16. device as claimed in claim 15 is characterized in that, site, base station determination module, and concrete being used for restrained judgement according to following quantitative evaluation function:
f obj(x)＝C 1*f RS_RSRP(x)+C 2*f RS_RSRQ(x)+C 3*f cost(x)
Wherein,
f Obj (x)The quantitative evaluation function that expression is set;
f RS_RSRP (x)Expression RSRP coverage rate, and the RSRP coverage rate is set as among the RSRP from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRP of the first threshold value and all RSRP that each drive test point receives;
f RS_RSRQ (x)Expression RSRQ coverage rate, and the RSRQ coverage rate is set as among the RSRQ from each TD-LTE wireless network cell that each drive test point receives is greater than the ratio of the quantity of the quantity of the RSRQ of the second threshold value and all RSRQ that each drive test point receives;
f Cost (x)Expression site quantity, and site quantity is set as difference and the ratio of the upper limit is counted in default site, and described difference is counted the poor of the upper limit and selectable site sum for default site, site, the base station sum that described selectable site sum expression is screened;
C iRepresent respectively f RS_RSRP (x), f RS_RSRQ (x)And f Cost (x)Corresponding weights, i=1,2,3.
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