CN101626580B - Method for determining system information required for establishing cell and base station - Google Patents
Method for determining system information required for establishing cell and base station Download PDFInfo
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- CN101626580B CN101626580B CN2008101162309A CN200810116230A CN101626580B CN 101626580 B CN101626580 B CN 101626580B CN 2008101162309 A CN2008101162309 A CN 2008101162309A CN 200810116230 A CN200810116230 A CN 200810116230A CN 101626580 B CN101626580 B CN 101626580B
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Abstract
The embodiment of the invention discloses a method for determining the system information required for establishing a cell, which comprises the following steps that: A, a base station acquires the distances between neighbor cells to the cell in which the base station exists according to system information on the neighbor cells; B, the base station determines the coverage radius of the cell in which the base station exists according to the distances between the neighbor cells to the cell in which the base station exists; and C, the base station determining the system information required for establishing the cell according to the coverage radius of the cell in which the base station exists. The embodiment of the invention also discloses a base station. The method, the base station can determine the system information required for establishing the cell according to actual application conditions.
Description
Technical field
The present invention relates to wireless communication technology, refer in particular to a kind of method and a kind of base station of determining to set up the required system information in sub-district.
Background technology
In synchronous code division multiple access of existing time-division (TD-SCDMA) system, in order to solve that base station (NodeB) start-up course needs the problem of manual intervention and the NodeB that introduced a kind of self-starting, the NodeB of this self-starting in start-up course can by with radio network controller (RNC, Radio NetworkController)/operation maintenance center (OMC, Operation ﹠amp; Maintenance Center) mutual between obtains the necessary information that this NodeB starts hardware and activating software, thereby need not start-up course is carried out manual intervention.
But, the NodeB of above-mentioned self-starting is after starting, owing to environment is not on every side surveyed, therefore can't know the situation of the surrounding enviroment of self position, for example, the number of contiguous NodeB on every side, and the situation of each adjacent cell (as information such as sub-district setting and cell parameters) etc.So what the NodeB of self-starting can only be by with RNC is mutual, be provided with and cell parameter is set up the sub-district at the NodeB place of this self-starting according to predefined sub-district.Because the complexity of actual application environment, the network parameter when carrying out the network planning and design in more predefined network parameters and the actual application environment may differ greatly.For example, the power of the Primary Common Control Physical Channel (PCCPCH) of the sub-district, NodeB place of above-mentioned self-starting is set according to the predefined network planning by RNC, rather than set according to actual application environment.When the power setting of above-mentioned PCCPCH is excessive, will produces bigger interference to the adjacent cell around the NodeB of this self-starting, thereby the user in the adjacent cell is caused bigger influence; And when the power setting of above-mentioned PCCPCH is too small, then will cause the covering radius of above-mentioned self-starting NodeB too little, make this self-starting NodeB to provide service, thereby reduce the operating efficiency of this self-starting NodeB for more user.In addition, in the prior art, if realize setting up the sub-district, NodeB place of above-mentioned self-starting according to the real network parameter in the actual application environment, then need by manually actual application environment constantly being tested, and according to real network parameter and default network parameter to recently adjusting corresponding network parameter.Because the limitation of network test instrument, often needing repeatedly to repeat above-mentioned test process could reasonably adjust network parameter, has therefore increased the cost of system greatly, also still needs to carry out simultaneously manual intervention.
In summary, in the prior art, the base station is not surveyed environment on every side, therefore can't automatically determine to set up the required system information in sub-district (for example, proper power etc. being set for PCCPCH) according to practical situations.
Summary of the invention
In view of this, the main purpose of the embodiment of the invention is to provide a kind of method and a kind of base station of determining to set up the required system information in sub-district, thereby makes the base station to determine to set up the required system information in sub-district according to practical situations.
For achieving the above object, the technical scheme in the embodiment of the invention is achieved in that
A kind of method of determining to set up the required system information in sub-district, this method comprises:
A, base station obtain the distance of each adjacent cell to this sub-district, place, base station according to the system information of each adjacent cell that is obtained; Wherein, the system information of described each adjacent cell comprises: the transmitting power of the antenna effective height of the signal propagation model of each adjacent cell, the main carrier frequency of each adjacent cell, each adjacent cell, the Primary Common Control Physical Channel PCCPCH of each adjacent cell;
The covering radius of sub-district, place, described base station is determined according to the distance of described each adjacent cell to this sub-district, place, base station in B, described base station;
The required system information in sub-district is determined to set up according to the covering radius of sub-district, place, described base station in C, described base station.
A kind of base station also is provided in the embodiments of the invention, and this base station comprises: receiver module, processing module and sending module;
Described receiver module is used to receive the system information of each adjacent cell, and the system information transmissions of each adjacent cell that will receive is given described processing module;
Described processing module is used for the system information according to described each adjacent cell, obtains the distance of each adjacent cell to this sub-district, place, base station; According to the distance of described each adjacent cell, determine the covering radius of sub-district, place, described base station to this sub-district, place, base station; Determine to set up the required system information in sub-district according to the covering radius of sub-district, place, described base station; Send the described required system information in sub-district of setting up to described sending module; Wherein, the system information of described each adjacent cell comprises: the transmitting power of the antenna effective height of the signal propagation model of each adjacent cell, the main carrier frequency of each adjacent cell, each adjacent cell, the Primary Common Control Physical Channel PCCPCH of each adjacent cell;
Described sending module is used to export the described required system information in sub-district of setting up.
In summary, provide a kind of method and a kind of base station of determining to set up the required system information in sub-district in the embodiments of the invention.In the said method and base station that is provided in embodiments of the present invention, the base station can obtain the distance of each adjacent cell to this sub-district, place, base station according to the system information of each adjacent cell, thereby determine the covering radius of this sub-district, place, base station, and determine to set up the required system information in sub-district according to described covering radius.Thereby make this base station to determine to set up the required system information in sub-district according to practical situations.
Description of drawings
Fig. 1 is the flow chart of the method for building up of sub-district in the embodiment of the invention.
Fig. 2 is the base station in the embodiment of the invention and the schematic diagram of its adjacent cell.
Fig. 3 is the flow chart of distance between the calculation plot in the embodiment of the invention.
Fig. 4 sets up the flow chart of the required system information in sub-district for definite in the embodiment of the invention and transmission.
Fig. 5 is for finishing the flow chart of the foundation of this sub-district, place, base station in the embodiment of the invention.
Fig. 6 is the structural representation of base station in the embodiment of the invention.
Embodiment
Because NodeB has very strong wireless signal reception, transmission and disposal ability, therefore can utilize the These characteristics of NodeB, make NodeB after startup, can survey, and therefore can automatically determine to set up the required system information in sub-district according to practical situations to environment on every side; Then, this NodeB sends to RNC with the determined required system information in sub-district of setting up again, makes RNC to finish the foundation of this sub-district, NodeB place according to the residing real network environment of this NodeB.
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 1 is the flow chart of the method for building up of sub-district in the embodiment of the invention.As shown in Figure 1, the method for building up of sub-district comprises step as described below in the embodiment of the invention:
In an embodiment of the present invention, base station (NodeB) will search for adjacent cell adjacent thereto after finishing startup, and according to the data in the descending pilot frequency time slot (DwPTS) of each adjacent cell that is received, obtain the system information of each adjacent cell; This NodeB can calculate the distance of each adjacent cell to this sub-district, NodeB place according to the system information of each adjacent cell that is obtained then.Wherein, the system information of described each adjacent cell comprises at least: the system informations such as transmitting power of the antenna effective height of the signal propagation model of each adjacent cell, the main carrier frequency of each adjacent cell, each adjacent cell, the PCCPCH of each adjacent cell.
For example, Fig. 2 is the base station in the embodiment of the invention and the schematic diagram of its adjacent cell.As shown in Figure 2, establish center among Fig. 2 and be the above-mentioned NodeB that finishes after the startup, this sub-district, NodeB place is referred to as this sub-district, and a plurality of adjacent cells (being 6 adjacent cells shown in Fig. 2) are arranged around this NodeB.If the covering radius of this sub-district is d
r, this sub-district is d to the distance of i adjacent cell
i(i=1,2 ...), for example, the distance of 4 adjacent cells in this sub-district to the (being adjacent cell 4) is d
4
In embodiments of the present invention, can be by step performing step 101 shown in Figure 3.Fig. 3 is the flow chart of distance between the calculation plot in the embodiment of the invention.As shown in Figure 3, with some adjacent cells of NodeB (for example, adjacent cell 4) be example, this NodeB can obtain the system information of this adjacent cell by step as described below, and calculates the distance of this adjacent cell to this sub-district, NodeB place according to the system information of being obtained:
For example, in an embodiment of the present invention, NodeB can be according to the corresponding relation of the interblock of the SYNC-DL that is obtained and SYNC-DL and uplink synchronous code (SYNC-UL), training sequence (Midamble) sign indicating number, scrambler, obtain the pairing group number of scrambler of this adjacent cell, and by calculating the scrambler that obtains this adjacent cell.
For example, in an embodiment of the present invention, NodeB can detect the phase place of received DwPTS, and obtain the System Frame Number of this DwPTS according to the scrambler of above-mentioned this adjacent cell that obtains, it is synchronous to obtain multi-frame, and obtains the position of broadcast channel (BCH) in PCCPCH synchronously according to described multi-frame; Read the broadcasted content on the BCH, obtain the system information of this adjacent cell, thereby obtain the information such as common signal channel configuration of this adjacent cell.For example, the main carrier operating frequency f of this adjacent cell
cTransmitting power P with PCCPCH
PccpchEtc. information.
For example, in an embodiment of the present invention, NodeB can measure the received signal power RSCP of PCCPCH
PccpchThereby, obtain the measured value of the path loss of PCCPCH according to following formula:
L
pccpch＝P
pccpch-RSCP
pccpch (1)
Then, NodeB determines the signal propagation model of this adjacent cell again according to its residing applied environment or plot planning, and according to the measured value L of the path loss of above-mentioned PCCPCH
Pccpch, the signal propagation model of this adjacent cell, the main carrier frequency f of this adjacent cell
cAntenna effective height H with this adjacent cell
b, this NodeB antenna effective height H
m, calculate between the antenna of the antenna of this adjacent cell and this NodeB apart from d, promptly this adjacent cell is to the distance of this sub-district, NodeB place.
For example, because the employed frequency range of TD-SCDMA system is about 1900 megahertzes (MHz), therefore for the situation of urban macro honeycomb, the signal propagation model of this adjacent cell can use the Okumura-Hata model, at this moment, and signal calculated propagation path loss L
u(dB) formula is:
L
u(dB)＝46.3+33.9log(f
c)-13.82log(H
b)-a(H
m)
+[44.9-6.55log(H
b)]log(d)+C
m (2)
Wherein, f
cThe main carrier operating frequency of representing this adjacent cell; H
bThe effective depth of representing the antenna of this adjacent cell; H
mThe effective depth of representing the antenna of this NodeB; D represents the distance between the antenna of the antenna of this adjacent cell and this NodeB; C
mExpression city correction factor is for medium-sized city C
mGenerally can be made as 0, and to big city C
mGenerally can be made as 3dB; A (H
m) the expression correction factor, be used for carrying out corresponding power back-off, a (H according to the height of the antenna of this NodeB
m) computing formula be:
a(H
m)＝[1.1log(f
c)-0.7]H
m-[1.56log(f
c)-0.8] (3)
For formula (2), when this NodeB is in the suburb, can revise revised suburb signal propagation path loss L accordingly to the signal propagation path loss
Rqo(dB) be:
L
rqo(dB)＝L
u(dB)-4.78[log(f
c)]
2+18.33log(f
c)-35.94 (4)
When this NodeB is in the rural area, also can revise revised rural area signal propagation path loss L accordingly to the signal propagation path loss
Ro(dB) be:
L
ro(dB)＝L
u(dB)-4.78[log(f
c)]
2+18.33log(f
c)-40.94 (5)
In addition, for the situation of city microcellulor, the signal propagation model of this adjacent cell can use COST231 Walfish-Ikegami model, at this moment, and signal calculated propagation path loss L
b(dB) formula is:
L
b(dB)＝42.6+26log(d)+20log(f
c) (6)
By the computing formula of above-mentioned signal propagation path loss, can calculate between the antenna of the antenna of this adjacent cell and this NodeB apart from d.
In like manner, repeat above-mentioned steps 1011～step 1015, obtain the system information of all adjacent cells of this NodeB, by between the antenna that calculates the antenna that can obtain all adjacent cells and this NodeB apart from d
i(wherein, i=1,2 ...), promptly each adjacent cell is to the distance of this sub-district, NodeB place.
In an embodiment of the present invention, NodeB can determine the covering radius d of this sub-district, NodeB place according to the distance between the antenna of the antenna of above-mentioned all adjacent cells and this NodeB
rFor example,
d
r＝min(d
i)*C (7)
Wherein, min represents from all d
iIn get the operation of minimum value; Parameters C is a proportionality coefficient, can set according to actual conditions, for example, can preestablish: C=0.6, perhaps C=0.5 etc.
In an embodiment of the present invention, the determined described recommendation performance number that the required system information in sub-district can be PCCPCH of setting up of NodeB also can be the path loss L of place, base station cell edge
r
For first kind of situation, in embodiments of the present invention, can be by step performing step 103 shown in Figure 4.Fig. 4 sets up the flow chart of the required system information in sub-district for definite in the embodiment of the invention and transmission.As shown in Figure 4, NodeB will be according to the covering radius d of its sub-district, place
r, determine the recommendation performance number of PCCPCH, and send the recommendation performance number of this PCCPCH that concrete performing step is as follows to RNC:
P
r-pccpch＝RSCP
r+L
r (7)
Wherein, in the ordinary course of things, can be with RSCP
rValue be made as-95dBm about, in actual applications, also can be according to practical situations to RSCP
rValue correspondingly adjust.
At above-mentioned transmission P
R-pccpchProcess in, the agreement (being proprietary protocol) that can use this NodeB and RNC to arrange voluntarily also can be used standard agreement.For example, NodeB can utilize the resource status in the standard agreement to indicate (Resource Status Indication) message with above-mentioned P
R-pccpchSend to RNC.At this moment, need in above-mentioned resource status indication, carry the information that PCCPCH recommends performance number, promptly in above-mentioned resource status indication, increase content as described below:
| Cell information (Cell Information) | ? | 0..<maxCellinNode?B> | ? | Information unit type and parameter (IE Type and Reference) | Semantic description (Semantics Description) |
| >>>C-ID | M | ? | ? | ? | ? |
| Recommendation PCCPCH performance number (Recommand PCCPCH Power) | O | ? | ? | INTEGER (-15..+40，...) | P r-pccpch，Unit：dBm Range：-15..+40 dBm?Step：0.1dB |
Table 1
For second kind of situation, NodeB only needs the covering radius d according to its sub-district, place
rDetermine L
r, and with L
rSend to RNC, and by RNC according to received L
rWith hold predefined RSCP at RNC
rCalculate P
R-pccpchDescribed definite L
rMethod and first kind of situation in determine L
rMethod identical; Equally, NodeB also can be with determined L
rInformation be carried in the indication of above-mentioned resource status and send to RNC.
In an embodiment of the present invention, when RNC receive described when setting up the required system information in sub-district and being the recommendation performance number of PCCPCH, the recommendation performance number of the PCCPCH that RNC can report according to NodeB is set this NodeB place system information of subdistricts.
For example, in embodiments of the present invention, can be by step performing step 104 shown in Figure 5.Fig. 5 is for finishing the flow chart of the foundation of this sub-district, place, base station in the embodiment of the invention.As shown in Figure 5, can finish the process of setting up of this sub-district, place, base station by step as described below:
For example, the recommendation performance number of the PCCPCH that sends according to this NodeB and the network planning of this sub-district, NodeB place or network actual conditions calculate common signal channel Secondary Common Control Physical Channel (SCCPCH), Acquisition Indicator Channel channel transmitting power such as (FPACH) fast, and, the code channel information of SCCPCH, FPACH, PRACH is set with reference to the common channel information of the adjacent cell around this sub-district, NodeB place.
In an embodiment of the present invention, the described required system information in sub-district of setting up that receives as RNC is L
rThe time, RNC can be according to the L of this reception
rWith hold predefined RSCP at RNC
rCalculate the performance number of PCCPCH, and then set this NodeB place system information of subdistricts by above-mentioned identical method.
In above-mentioned step 101～104, all be that the situation that searches adjacent cell around it with NodeB is the explanation that example is carried out.Therefore, before step 101, NodeB also needs carrying out the search of adjacent cell around it, and whether promptly search for it has adjacent cell on every side; When this NodeB searches adjacent cell around it, execution in step 101; And when NodeB did not search adjacent cell around it, then this NodeB can correspondingly be provided with a P according to RF capabilities (being main carrier work centre frequency) and the mode of self
R-pccpchValue, and with this P
R-pccpchValue report RNC, RNC will be according to this P
R-pccpchValue, by the method identical this place, base station system information of subdistricts is set with above-mentioned steps 104, finish the process of setting up of this sub-district, place, base station.
In addition, in above-mentioned step 104, RNC also can set up and activate this sub-district, NodeB place according to the described required system information in sub-district of setting up whether the actual conditions decision adopts above-mentioned NodeB to report.When the described required system information in sub-district of setting up that does not adopt NodeB to report, RNC can set up and activate this sub-district, NodeB place according to the predetermined network planning or the system information that self is provided with.
Fig. 6 is the structural representation of base station in the embodiment of the invention.As shown in Figure 6, the base station in the embodiment of the invention comprises: receiver module, processing module and sending module.
Described receiver module is used to receive the system information of each adjacent cell, and the system information transmissions of each adjacent cell that will receive is given described processing module;
Described processing module is used for the system information according to described each adjacent cell, obtains the distance of each adjacent cell to this sub-district, place, base station; According to the distance of described each adjacent cell, determine the covering radius of sub-district, place, described base station to this sub-district, place, base station; Determine to set up the required system information in sub-district according to the covering radius of sub-district, place, described base station; Send the described required system information in sub-district of setting up to described sending module;
Described sending module is used to export the described required system information in sub-district of setting up.
The said method and the base station that are provided among the application of the invention embodiment, the base station can obtain the distance of each adjacent cell to this sub-district, place, base station according to the system information of each adjacent cell, therefore can determine the covering radius of this sub-district, place, base station, and determine to set up the required system information in sub-district; Then, this NodeB can send the above-mentioned required system information in sub-district of setting up to RNC, makes RNC to finish the process of setting up of sub-district, place, described base station according to the above-mentioned required system information in sub-district of setting up.Thereby need not under the situation of manual intervention, the base station also can be automatically according to default parameter (for example, the propagation model of antenna height, sub-district etc.) and the situation of adjacent cell around this base station, by calculating the covering radius of this sub-district, place, base station, and determine to set up the required system information in sub-district according to described covering radius and (for example, be fit to the power of PCCPCH of this sub-district or the path loss L of place, base station cell edge
rDeng), therefore make the base station determine to set up the required system information in sub-district, and can activate the process of setting up this sub-district, place, base station adaptively according to practical situations, do not need manual intervention, thereby can save cost significantly.Simultaneously, also can optimize the initial coverage that the sub-district is set and also can effectively control of the interference of newly-established sub-district existing sub-district.
In addition, by above-mentioned method, also can utilize the detectivity of base station to obtain the system information of the adjacent cell around this base station, thereby can understand the strong and weak situation of coverage condition, signal of each adjacent cell or not have the sub-district to cover situations such as cavity according to these systems, make this base station that the power of a rational covering radius and PCCPCH can be set for this sub-district, place, base station according to above-mentioned situation, thereby can reduce network coverage cavity to greatest extent, the foundation that provides of the optimization of network is provided.
The method that is provided in the embodiment of the invention can be used for the NodeB of self-starting, also can be used for the NodeB of non-self-starting.Before NodeB activates hardware and sets up the sub-district, can use above-mentioned method, and when NodeB activate and operation after, also can use above-mentioned method to trigger NodeB and again adjacent cell be measured, and the reconstruction by the sub-district or reshuffle the adjustment that realizes cell coverage area.
In addition, in Long Term Evolution (LTE) system in the future, RNC will be set no longer, therefore, by the method that is provided in the embodiment of the invention, make that the eNodeB in the system also can be according to the situation of adjacent cell around measuring, thereby realize the application of self adaptation eNodeB.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method of determining to set up the required system information in sub-district is characterized in that, this method comprises:
A, base station obtain the distance of each adjacent cell to this sub-district, place, base station according to the system information of each adjacent cell that is obtained; Wherein, the system information of described each adjacent cell comprises: the transmitting power of the antenna effective height of the signal propagation model of each adjacent cell, the main carrier frequency of each adjacent cell, each adjacent cell, the Primary Common Control Physical Channel PCCPCH of each adjacent cell;
The covering radius of sub-district, place, described base station is determined according to the distance of described each adjacent cell to this sub-district, place, base station in B, described base station;
The required system information in sub-district is determined to set up according to the covering radius of sub-district, place, described base station in C, described base station.
2. method according to claim 1 is characterized in that, also comprises after described step C:
D, described base station send the described required system information in sub-district of setting up to radio network controller (RNC);
E, described RNC set up the required system information in sub-district according to what receive, and place, described base station system information of subdistricts is set, and finish the process of setting up of sub-district, place, described base station.
3. method according to claim 1 is characterized in that, obtaining of the system information of each adjacent cell described in the steps A comprises:
Described base station obtains the system information of each adjacent cell according to the data in the descending pilot frequency time slot that is received.
4. method according to claim 3 is characterized in that, described steps A comprises:
The received signal power of the PCCPCH of A1, described each adjacent cell of base station measurement, and according to the transmitting power of the PCCPCH of resulting measured value and described each adjacent cell obtains the measured value of path loss of the PCCPCH of each adjacent cell;
A2, described base station calculate the distance of each adjacent cell to sub-district, place, described base station according to the measured value of the path loss of the PCCPCH of the signal propagation model of each adjacent cell, each adjacent cell, the main carrier frequency of each adjacent cell, the antenna effective height of each adjacent cell, the antenna effective height of described base station.
5. method according to claim 2 is characterized in that, the described required system information in sub-district of setting up is:
The path loss of the recommendation performance number of PCCPCH or place, described base station cell edge.
6. method according to claim 5 is characterized in that, when setting up the required system information in sub-district and being the recommendation performance number of PCCPCH, described step e comprises when described:
Described RNC sets the power of the common signal channel of sub-district, place, described base station according to the recommendation performance number of described PCCPCH;
Described RNC sets the scrambler of sub-district, place, described base station according to the scrambling code information of described each adjacent cell;
Described RNC sets the parameter of public resource, and generation system message; Initiate the process of setting up of sub-district, place, described base station, set up the sub-district.
7. method according to claim 2 is characterized in that, described step D comprises:
Described base station sends to RNC with the resource status indication; Carry the described required system information in sub-district of setting up in the described resource status indication.
8. method according to claim 2 is characterized in that, also comprises before the described steps A:
Whether described base station search it have adjacent cell on every side;
When described base station search during to adjacent cell, execution in step A; Otherwise the required system information in sub-district is determined to set up according to self RF capabilities and propagation model in described base station, directly execution in step D.
9. a base station is characterized in that, this base station comprises: receiver module, processing module and sending module;
Described receiver module is used to receive the system information of each adjacent cell, and the system information transmissions of each adjacent cell that will receive is given described processing module;
Described processing module is used for the system information according to described each adjacent cell, obtains the distance of each adjacent cell to this sub-district, place, base station; According to the distance of described each adjacent cell, determine the covering radius of sub-district, place, described base station to this sub-district, place, base station; Determine to set up the required system information in sub-district according to the covering radius of sub-district, place, described base station; Send the described required system information in sub-district of setting up to described sending module; Wherein, the system information of described each adjacent cell comprises: the transmitting power of the antenna effective height of the signal propagation model of each adjacent cell, the main carrier frequency of each adjacent cell, each adjacent cell, the Primary Common Control Physical Channel PCCPCH of each adjacent cell;
Described sending module is used to export the described required system information in sub-district of setting up.
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| CN109819500B (en) * | 2017-11-21 | 2021-08-06 | 中国移动通信有限公司研究院 | Cell selection method, terminal, base station and communication equipment |
| CN110708664B (en) * | 2019-10-11 | 2020-11-06 | 同帅科技（天津）有限公司 | Traffic flow sensing method and device, computer storage medium and electronic equipment |
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| CN1233928A (en) * | 1998-03-19 | 1999-11-03 | 朗迅科技公司 | Automatic neighbor identification in cellular system |
| CN1764310A (en) * | 2004-10-20 | 2006-04-26 | 华为技术有限公司 | Method for realizing mobile station positioning in WCDMA system |
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2008
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233928A (en) * | 1998-03-19 | 1999-11-03 | 朗迅科技公司 | Automatic neighbor identification in cellular system |
| CN1764310A (en) * | 2004-10-20 | 2006-04-26 | 华为技术有限公司 | Method for realizing mobile station positioning in WCDMA system |
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