CN102547768B - The implementation method of SON and device in distributed Femto base station system - Google Patents
The implementation method of SON and device in distributed Femto base station system Download PDFInfo
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Abstract
The invention provides the implementation method of the SON in a kind of distributed Femto base station system, device and a kind of Femto base station system, after the method comprises the steps: that Femto base station powers on, radio frequency is set to listen mode, intercept the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community, Femto base station cell; According to the information of each adjacent cell listened to, obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE.Method of the present invention and device make Femto base station according to network environment adaptive allocating cell parameter when powering on, can achieve automatically normal work, and in the course of the work without any need for manual intervention, and can reduce to disturb.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the implement device of SON in the implementation method of SON in a kind of distributed Femto base station system, a kind of distributed Femto base station system and a kind of Femto base station system.
Background technology
The main commercial technology of current mobile communication just changes from 2G, 2.5G to 3G, type of service improving constantly also along with wireless access rate, change from simple voice and short message service to abundant data service gradually, the ratio that mobile data services account for total business volume is also more and more higher.A large amount of high-speed datas and multimedia service, as the business such as visual telephone, Streaming Media, game, all occur in indoor environment, these business all need larger power system capacity and good network quality.
Compare with traditional second generation GSM900 frequency range, 3-G (Generation Three mobile communication system) signal attenuation is faster, poorer to the through characteristic of building, and the in-door covering how improving 3-G (Generation Three mobile communication system) is a great problem of pendulum in face of each operator always; In addition due to the cell breath of 3G network, when the traffic loads of macro base station community increases the weight of, the coverage of macro base station community will diminish thereupon.Mode in the market by introducing Femto base station solves the problems referred to above, introduces the telephone traffic that macro base station community greatly will be shunted in Femto base station, thus can provide better speech quality for user.
Femto base station is towards the lower communication base station of the transmitting power of indoor scene, provides personal user and enterprise customer's fast access into network, for domestic consumer provides the efficient communication service comprising the multiple business such as voice, data, video.The Femto base station of indoor application, due to One's name is legion, the uncertainty of switching on and shutting down, make the intervention being subject to user and operator that the deployment of Femto base station should be as far as possible few, Femto base station is needed to possess SON (Self-OrganizingNetworks, self-organizing network) function, reach plug and play, and periodically can carry out the parameter optimization of Femto base station cell.
The station mode of opening of current macro base station is by the network planning, and cell parameter is by the unified configuration of network, and in network operation process, these cell parameters generally can not change.If existing cell configuration mode is applied in distributed Femto base station system, very large defect can be there is: Femto base station range is little, quantity is many, can not be configured base station from home one by one by Operation and Maintenance; And existing collocation method is also unfavorable for the realization of plug and play, therefore the collocation method of existing macro base station cell parameter is not suitable for Femto base station.
In centralized Femto network, there is following technology in addition: Femto is detected by down link base station, configure preliminary frequency, scrambler and transmitting power, then the cell parameter of configuration is sent to network controller and registers, and revise scrambler allocation list.The method is the scrambler allocation list of the adjacent cell issued according to network when configuring preliminary scrambler, and therefrom the scrambler of the community that this community of chosen distance is far away is as the scrambler of this community.In the method, the configuration of scrambler needs network real-time servicing scrambler allocation list, the method is simple frequency in addition, the configuration of scrambler and transmitting power (in fact also needs the good Neighboring Cell List of network configuration and UE maximum transmission power to be then handed down to Femto base station, such guarantee Femto base station normally works), therefore said method can only be applicable in centralized Femto network, because in distributed Femto base station system, network can not be responsible for the parameter configuration of community, also can not preserve the information of adjacent cell in real time and be handed down to the Femto base station newly powered on.
Because Femto base station is installed and the uncertainty of switching on and shutting down, in distributed Femto base station system, for making Femto base station normally work, SON function is indispensable.Relative to the centralized Femto network architecture, distributed Femto system is a kind of more intelligent network configuration, therefore, in distributed Femto network, how to allow Femto base station normally work, and reduce manual intervention in the course of the work as far as possible, become this area problem demanding prompt solution.
Summary of the invention
For solving the problem, the invention provides the implementation method of the SON in a kind of distributed Femto base station system, device and a kind of Femto base station system, can adaptive allocating cell parameter, realize normal work automatically, and in the course of the work without any need for manual intervention.
For achieving the above object, the present invention adopts following technical scheme:
An implementation method of SON in distributed Femto base station system, comprises the steps:
After Femto base station powers on, radio frequency is set to listen mode, intercepts the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell;
According to the information of each adjacent cell listened to, obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, and complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE.
An implement device of SON in distributed Femto base station system, comprising:
Intercept module, for after Femto base station powers on, radio frequency is set to listen mode, intercept the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell;
Self-configuring module, for the information according to each adjacent cell listened to, obtain the Neighboring Cell List of this Femto base station, working frequency points, scrambler, the maximum transmission power of Femto base station and the maximum transmission power of UE, and complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE.
The present invention also provides a kind of distributed Femto base station system in addition, comprises the Femto base station described in implement device of SON at least one above-mentioned distributed Femto base station system.
As can be seen from above scheme, the implementation method of the SON in a kind of distributed Femto base station system of the present invention, device and a kind of Femto base station system, Femto base station has automatic listening functions, when Femto base station has just added network, Femto base station is by intercepting the information of each adjacent cell in network and obtaining according to the information of the adjacent cell listened to and complete the automatic configuration of every cell parameter, Femto base station system is only needed just can automatic operation by IP port access Internet network, do not need webmaster and extraneous intervention, achieve the object of the plug and play of Femto base station, use method of the present invention and device without the need to terminal to report measured value, without the need to Signalling exchange, the interference of this Femto base station to other base station in network can be reduced adaptively, further increasing network performance.
Accompanying drawing explanation
Fig. 1 is the network diagram that after introducing Femto base station, macro base station and Femto base station cover jointly;
Fig. 2 is the automatic configuration flow schematic diagram of the implementation method of SON in a kind of distributed Femto base station system in embodiment one;
Fig. 3 is this Femto base station and the tangent schematic diagram of intercepting PCCPCHRSCP largest cell in community;
Fig. 4 is the Automatic Optimal schematic flow sheet of the implementation method of SON in a kind of distributed Femto base station system in embodiment two;
Fig. 5 is the whole implementation frame diagram of SON in the embodiment of the present invention three;
Fig. 6 is the synchronous schematic flow sheet in SON cyclic cell in the embodiment of the present invention three;
Fig. 7 is the structural representation of the implement device of SON in a kind of distributed Femto base station system in embodiment four.
Embodiment
The invention provides the implementation method of SON in a kind of distributed Femto base station system, device and a kind of Femto base station system, cannot allocating cell parameter and need the problem of manual intervention automatically to solve in prior art.Below in conjunction with accompanying drawing, the specific embodiment of the implementation method of SON in a kind of distributed Femto base station system of the present invention, device and a kind of Femto base station system is further described.
Embodiment one
The description of embodiments of the invention, mainly based on TD-SCDMA mobile communication system, is equally also applicable to WCDMA and CDMA2000 system certainly.As shown in Figure 1, in certain scope, multiple macro base station community and multiple Femto base station cell is comprised to meet the wireless coverage of user mobile phone (UE).Macro base station community maximum downstream transmitting power is fixed, and system provides Femto base station reference maximum transmission power, but this maximum transmission power can according to network environment self-adaptative adjustment.The mode that in Femto system, other cell parameter adopts Femto base station to intercept as the configuration of the cell parameters such as Neighboring Cell List, working frequency points, scrambler, is obtained by the mode of SON self-configuring and self-optimizing.As shown in Figure 2, in a kind of distributed Femto base station system, the implementation method of SON, comprises the steps:
After step S1, Femto base station powers on, radio frequency is set to listen mode, intercepts the information of each adjacent cell in network; Specifically comprise: scope radio frequency being set to each adjacent cell working frequency range in network, and the community in whole band limits is intercepted.Described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell.Not only take into account the configuration of macro base station in method of the present invention when considering the interference between base station, have also contemplated that the configuring condition of contiguous Femto base station simultaneously, is one more reasonably collocation method.
The information of the above-mentioned each adjacent cell listened to comprises: the working frequency points of each adjacent cell, scrambler, PCCPCHRSCP (PrimaryCommonControlPhysicalChannelReceivedSignalCodePow er, Primary Common Control Physical Channel received signal code power) information such as received signal strength value on value, SNR (Signal/Noise, signal to noise ratio) value and each carrier wave.
Step S2, according to the information of each adjacent cell listened to, obtains the Neighboring Cell List of this Femto base station, and completes the automatic configuration of the Neighboring Cell List of this Femto base station.
Step S3, according to the information of each adjacent cell listened to, obtains the working frequency points of this Femto base station, and completes the automatic configuration of the working frequency points of this Femto base station.
Step S4, according to the information of each adjacent cell listened to, obtains the scrambler of this Femto base station, and completes the automatic configuration of the scrambler of this Femto base station.
Step S5, according to the information of each adjacent cell listened to, obtains the maximum transmission power of this Femto base station and the maximum transmission power of UE, and completes the automatic configuration of the maximum transmission power of this Femto base station and the maximum transmission power of UE.
Preferably, specifically can comprise as follows according to the process of the Neighboring Cell List of this Femto of acquisition of information base station of each adjacent cell listened in described step S2: the PCCPCHRSCP value of Femto base station to adjacent cell each in the network listened to sorts, the community of the predetermined number that described PCCPCHRSCP value is larger is selected to form the Neighboring Cell List of Femto base station, that is: according to the size of described PCCPCHRSCP value, the community of descending selection predetermined number forms the Neighboring Cell List of Femto base station.
Preferably, specifically can comprise as follows according to the process of the working frequency points of this Femto of acquisition of information base station of each adjacent cell listened in described step S3:
Step S301, Femto base station obtains the working frequency points of each adjacent cell in the network that listens to, scrambler, PCCPCHRSCP value and carrier received signal intensity level;
Step S302, Femto base station obtains the list of this Femto operable candidate's frequency;
The frequency that other community listened in step S303, Femto base station acquisition network has used, is formed and intercepts frequency list;
Step S304, Femto base station judges whether there is the frequency not belonging to and intercept frequency list in the list of candidate's frequency, if exist, then calculate the absolute value sum of this frequency and the difference of all frequencies to have listened to respectively, select wherein with the available frequency of minimum frequency as this Femto base station;
Step S305, if the list of described candidate's frequency is empty or frequency in the list of described candidate's frequency all belongs to and intercepts frequency list, intercept the carrier received signal intensity level of each frequency in frequency list described in then obtaining, choose the working frequency points of the minimum frequency of carrier received signal intensity level as this Femto base station.
In the present embodiment, Femto base station is the listening functions of utilization itself, by to the disturbed condition on each carrier wave of peripheral cell, the carrier wave selecting interference minimum, as the working frequency points of this Femto base station, does not need webmaster to carry out frequency configuration, effectively can reduce manual intervention.
Preferably, specifically can comprise as follows according to the process of the scrambler of this Femto of acquisition of information base station of each adjacent cell listened in described step S4:
Step S401, Femto base station obtain and this Femto base station with the frequency point allocation information of the frequency of all communities frequently, scrambler, PCCPCHRSCP value and this community;
Step S402, adopts alternative scrambling code distribution method, carries out base scrambler component and join;
Step S403, carries out descending pilot frequency code assign ment;
Step S404, joins according to described base scrambler component the scrambler determining this Femto base station with descending pilot frequency code assign ment.
Join due to above-mentioned base scrambler component and be known technology with descending pilot frequency code assign ment, therefore to not repeating both this in the present embodiment.In the present embodiment, Femto base station does not need webmaster to carry out scrambler configuration equally, but adopt a kind of scrambling code planning algorithm of alternative, first the correlation of scrambler according to compound key is divided into groups, then obtain the scrambler of this Femto base station according to the cross correlation of compound key interblock.Above-mentioned way can reduce manual intervention further.
Preferably, specifically can comprise as follows according to the maximum transmission power of this Femto of acquisition of information base station of each adjacent cell listened to and the process of the maximum transmission power of UE in described step S5:
Step S501, Femto base station obtains the working frequency points of the working frequency points of each adjacent cell in the network that listens to, scrambler, PCCPCHRSCP value and this community;
Step S502, searches the community that PCCPCHRSCP value is maximum in the adjacent cell listened to;
Step S503, obtains the transmitting power (PCCPCHTxPower) of PCCPCH channel corresponding to the maximum community of PCCPCHRSCP value;
Step S504, arranges the minimum intensity of cell-edge according to the requirement of actual overwrite procedure small area cell-edge;
Step S505, adopts propagation model and link budget, calculates the distance d1 between the base station of the maximum community of PCCPCHRSCP value and this Femto base station, and calculates base station self the covering radius d2 of the maximum community of PCCPCHRSCP value;
Step S506, in conjunction with propagation model and link budget, adopts the principle of wireless coverage, and the community making the scope of this Femto base station coverage maximum with the PCCPCHRSCP value listened to is tangent, as shown in Figure 6.For reducing interference, the coverage d3 arranging this community is above-mentioned distance and the difference (i.e. d3=d1-d2) of radius, and obtains this Femto base station PCCPCH transmitting power;
Step S507, the basis of this Femto base station PCCPCH transmitting power arranges a power bias value, and then obtains the maximum transmission power of Femto base station;
Step S508, the maximum transmission power arranging described UE is identical with described PCCPCH transmitting power.
The scope that in the present embodiment, the transmitting power of Femto base station covers is reasonable, both seamless coverage was realized, make again this Femto base station to the interference reduction of other base station to minimum, adopting relative in existing power self-configuring technology the mode being directly defaulted as maximum transmission power, is that one more reasonably configures.
Embodiment two
Describe the process of cell parameter being carried out to configuration automatically in embodiment one in detail, as a good embodiment, the present embodiment additionally provides and carries out Automatic Optimal to cell parameter, and this Automatic Optimal is the process reconfiguring cell parameter.As shown in Figure 4, after described automatic configuration completes, can also comprise the steps:
Step S6, arranges and periodically optimizes timer;
Step S7, when described periodicity optimizes timer to after date, carries out Automatic Optimal operation; Specifically comprise:
Step 701, radio frequency is set to listen mode by Femto base station, again intercepts the information of each adjacent cell in network;
Step 702, according to the information of the up-to-date each adjacent cell listened to, again obtains the Neighboring Cell List of this Femto base station, and completes the Automatic Optimal of the Neighboring Cell List of this Femto base station;
Step S703, according to the information of the up-to-date each adjacent cell listened to, again obtains the working frequency points of this Femto base station, and completes the Automatic Optimal of the working frequency points of this Femto base station;
Step S704, according to the information of the up-to-date each adjacent cell listened to, again obtains the scrambler of this Femto base station, and completes the Automatic Optimal of the scrambler of this Femto base station;
Step S705, according to the information of the up-to-date each adjacent cell listened to, again obtains the maximum transmission power of this Femto base station and the maximum transmission power of UE, and completes the Automatic Optimal of the maximum transmission power of this Femto base station and the maximum transmission power of UE.
Again the process obtaining the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE in the present embodiment according to the information of the up-to-date each adjacent cell listened to is identical with the method in embodiment one, and it will not go into details herein.
Embodiment three
In above-described embodiment one with embodiment two, we describe the automatic configuration of SON and the process of Automatic Optimal, the present embodiment, on the basis of the former two, also provides the function of cell synchronous, to realize the overall implementation of SON.
As shown in Figure 5, in the overall implementation of SON, Neighboring Cell List in described this Femto of acquisition base station and automatically configure or after Automatic Optimal, obtain this Femto base station working frequency points and automatically configure or before Automatic Optimal, also comprise step S21: the reference synchronization community obtaining this Femto base station; And in the normal course of operation of Femto base station, clock synchronous is periodically carried out to keep the synchronous of minizone with described reference synchronization community in Femto base station.
Preferably, above-mentioned process of carrying out cell synchronous specifically can comprise the steps:
Step S211, according to the information of each adjacent cell listened to, obtains the reference synchronization community of this Femto base station;
Step S212, selects free timeslot execution cycle property intercell synchronous;
Step S213, if the synchronous success in cyclic cell, returns step S212, if the synchronous success failure in cyclic cell, then checks whether also there is candidate synchronization reference cell, if exist, then continues to perform intercell synchronous to next reference synchronization community; If do not exist, then directly perform SON self-configuring flow process.
Preferably, the process obtaining reference synchronization community in above-mentioned steps S211 specifically can comprise the steps:
Step S2111, Femto base station obtains the working frequency points of adjacent cell in the Neighboring Cell List of this community and Neighboring Cell List, scrambler, SNR value and PCCPCHRSCP value;
Step S2112, selects SNR value and PCCPCHRSCP value in described Neighboring Cell List all to exceed the community of predetermined threshold, forms the list of candidate synchronization reference cell;
Step S2113, if described candidate synchronization reference cell list is not empty, then the community that prioritizing selection SNR value is maximum from this candidate synchronization reference cell list is as reference synchronization community;
Step S2114, if described candidate synchronization reference cell list is empty, then re-start intercepting adjacent cell in network, and then obtain frequency, scrambler, the information such as SNR value and PCCPCHRSCP value of each adjacent cell in the Neighboring Cell List of this community and Neighboring Cell List, re-start the judgement of candidate synchronization reference cell.If described candidate synchronization reference cell list is still for empty after repeatedly intercepting, then arranging this community is isolated island community, Femto base station processes according to isolated island community, namely configures the working frequency points of Femto base station, scrambler, the maximum transmission power of Femto base station and the maximum transmission power of UE according to isolated island community.
After Femto base station obtains reference synchronization community, the physical layer of Femto base station needs periodically to carry out synchronously, Femto base station also needs the signal strength signal intensity of the idle moment monitoring reference synchronization community in periodic synchronous simultaneously, when detecting that the signal of reference synchronization community is deteriorated, the reference synchronization community more renewed in time, makes Femto base station keep synchronous better with other community in network.
Embodiment four
Corresponding with the implementation method of SON in a kind of distributed Femto base station system of the present invention, the present invention also provides the implement device of SON in a kind of distributed Femto base station system, as shown in Figure 7, comprising:
Intercept module, for after Femto base station powers on, radio frequency is set to listen mode, intercept the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell;
Self-configuring module, for the information according to each adjacent cell listened to, obtain the Neighboring Cell List of this Femto base station, working frequency points, scrambler, the maximum transmission power of Femto base station and the maximum transmission power of UE, and complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE.
Preferably, as shown in Figure 7, the implement device of the SON in the distributed Femto base station system in the present embodiment, can also comprise:
Set timer module, periodically optimizes timer for arranging;
Self-optimizing module, for optimizing timer to after date when described periodicity, carries out Automatic Optimal operation; Specifically comprise: radio frequency is set to listen mode by Femto base station, again intercept the information of each adjacent cell in network; According to the information of the up-to-date each adjacent cell listened to, again obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, and complete the Automatic Optimal of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE.
Preferably, as shown in Figure 7, the implement device of the SON in the present embodiment in distributed Femto base station system, can also comprise:
The reference synchronization community acquisition module be connected respectively with described self-configuring module, self-optimizing module, for after the Neighboring Cell List obtaining this Femto base station, before the working frequency points that obtains this Femto base station, according to the information of each adjacent cell listened to, obtain the reference synchronization community of this Femto base station;
Cell synchronous module, for selecting free timeslot execution cycle property intercell synchronous;
Judge module, for when cyclic cell synchronization failure, checks whether also there is candidate synchronization reference cell, if exist, then continues to perform intercell synchronous to next reference synchronization community; If do not exist, then directly perform SON self-configuring flow process.
Other technical characteristic in the implement device of the SON in a kind of distributed Femto base station system in the present embodiment is identical with the implementation method of the SON in a kind of distributed Femto base station system in embodiment one, and it will not go into details herein.
Embodiment five
The present invention also provides a kind of distributed Femto base station system, and it comprises at least one the Femto base station mentioned in the implementation method of the SON in the distributed Femto base station system in above-mentioned several embodiment and device.
Can be found out by above several embodiment, the present invention proposes the implementation method of the SON in a kind of distributed Femto base station system completely newly, device and a kind of Femto base station, Femto base station has automatic listening functions, when Femto base station has just added network, Femto base station is by intercepting the information of each adjacent cell in network and obtaining according to the information of each adjacent cell listened to and complete the automatic configuration of every cell parameter, Femto base station system is only needed just can automatic operation by IP port access Internet network, when not needing webmaster and extraneous intervention, Femto base station just can obtain cell parameter and Automatic Optimal cell parameter automatically, no longer need to carry out the network planning and the network optimization just can normally work, achieve the object of the plug and play of Femto base station, and method of the present invention and device, without the need to terminal to report measured value, without the need to Signalling exchange, can reduce the interference of this Femto base station to other base station in network adaptively, further increasing network performance.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (7)
1. an implementation method of the SON in distributed Femto base station system, is characterized in that, comprise the steps:
After Femto base station powers on, radio frequency is set to listen mode, intercepts the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell; The information of the described each adjacent cell listened to comprises: the received signal strength value on the working frequency points of each adjacent cell, scrambler, PCCPCHRSCP value, SNR value and each carrier wave;
According to the information of each adjacent cell listened to, obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, and complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE;
Also step is comprised after described automatic configuration completes:
Arrange and periodically optimize timer;
When described periodicity optimizes timer to after date, carry out Automatic Optimal operation; Specifically comprise: radio frequency is set to listen mode by Femto base station, again intercept the information of each adjacent cell in network; According to the information of the up-to-date each adjacent cell listened to, again obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, and complete the Automatic Optimal of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE;
After the Neighboring Cell List of described this Femto of acquisition base station, before the working frequency points that obtains this Femto base station, also comprise step: the reference synchronization community obtaining this Femto base station; And in the normal course of operation of Femto base station, clock synchronous is periodically carried out to keep the synchronous of minizone with described reference synchronization community in Femto base station, specifically comprises:
According to the information of each adjacent cell listened to, obtain the reference synchronization community of this Femto base station;
Select free timeslot execution cycle property intercell synchronous;
When cyclic cell synchronization failure, check whether also there is candidate synchronization reference cell, if exist, then continue to perform intercell synchronous to next reference synchronization community; If do not exist, then directly perform SON self-configuring flow process;
The process of the reference synchronization community of this Femto of acquisition of information base station of each adjacent cell that described basis listens to specifically comprises:
Femto base station obtains the working frequency points of each adjacent cell in the Neighboring Cell List of this community and Neighboring Cell List, scrambler, SNR value and PCCPCHRSCP value;
Select SNR value and PCCPCHRSCP value in described Neighboring Cell List all to exceed the community of predetermined threshold, form the list of candidate synchronization reference cell;
If described candidate synchronization reference cell list is not empty, then the community that prioritizing selection SNR value is maximum from this candidate synchronization reference cell list is as reference synchronization community;
If described candidate synchronization reference cell list is empty, then re-start intercepting adjacent cell in network; If described candidate synchronization reference cell list is still for empty after repeatedly intercepting, then arranging this community is isolated island community, and Femto base station processes according to isolated island community.
2. the implementation method of the SON in distributed Femto base station system according to claim 1, it is characterized in that, the process of the Neighboring Cell List of this Femto of acquisition of information base station of the adjacent cell that described basis listens to specifically comprises: the PCCPCHRSCP value of Femto base station to adjacent cell each in the network listened to sorts, according to the size of described PCCPCHRSCP value, the community of descending selection predetermined number forms the Neighboring Cell List of Femto base station.
3. the implementation method of the SON in distributed Femto base station system according to claim 1, is characterized in that, the process of the working frequency points of this Femto of acquisition of information base station of each adjacent cell that described basis listens to specifically comprises:
Femto base station obtains the working frequency points of each adjacent cell in the network that listens to, scrambler, PCCPCHRSCP value and carrier received signal intensity level;
Femto base station obtains the list of this Femto operable candidate's frequency;
The frequency that other community listened in Femto base station acquisition network has used, is formed and intercepts frequency list;
Femto base station judges whether there is the frequency not belonging to and intercept frequency list in the list of candidate's frequency, if exist, then calculate the absolute value sum of this frequency and the difference of all frequencies to have listened to respectively, select wherein with the available frequency of minimum frequency as this Femto base station;
If the list of described candidate's frequency is empty or frequency in the list of described candidate's frequency all belongs to and intercepts frequency list, intercept the carrier received signal intensity level of each frequency in frequency list described in then obtaining, choose the working frequency points of the minimum frequency of carrier received signal intensity level as this Femto base station.
4. the implementation method of the SON in distributed Femto base station system according to claim 1, is characterized in that, the process of the scrambler of this Femto of acquisition of information base station of each adjacent cell that described basis listens to specifically comprises:
Femto base station obtain and this Femto base station with the frequency point allocation information of the frequency of all communities frequently, scrambler, PCCPCHRSCP value and this community;
Adopt alternative scrambling code distribution method, carry out base scrambler component and join;
Carry out descending pilot frequency code assign ment;
The scrambler determining this Femto base station with descending pilot frequency code assign ment is joined according to described base scrambler component.
5. the implementation method of the SON in distributed Femto base station system according to claim 1, it is characterized in that, the maximum transmission power of this Femto of acquisition of information base station of each adjacent cell that described basis listens to and the process of the maximum transmission power of UE specifically comprise:
Femto base station obtains the working frequency points of the working frequency points of each adjacent cell in the network that listens to, scrambler, PCCPCHRSCP value and this community;
The community that PCCPCHRSCP value is maximum is searched in the adjacent cell listened to;
Obtain the transmitting power of PCCPCH channel corresponding to the maximum community of PCCPCHRSCP value;
The minimum intensity of cell-edge is set according to the requirement of actual overwrite procedure small area cell-edge;
Adopt propagation model and link budget, calculate the distance between the base station of the maximum community of PCCPCHRSCP value and this Femto base station, and calculate base station self covering radius of the maximum community of PCCPCHRSCP value;
In conjunction with propagation model and link budget, adopt the principle of wireless coverage, the coverage arranging this community is above-mentioned distance and the difference of radius, and obtains this Femto base station PCCPCH transmitting power;
The basis of this Femto base station PCCPCH transmitting power arranges a power bias value, and then obtains the maximum transmission power of Femto base station;
The maximum transmission power arranging described UE is identical with described PCCPCH transmitting power.
6. an implement device of SON in distributed Femto base station system, is characterized in that, comprising:
Intercept module, for after Femto base station powers on, radio frequency is set to listen mode, intercept the information of each adjacent cell in network, described adjacent cell comprises contiguous macro base station community and contiguous Femto base station cell; The information of the described each adjacent cell listened to comprises: the received signal strength value on the working frequency points of each adjacent cell, scrambler, PCCPCHRSCP value, SNR value and each carrier wave; Described module of intercepting is further used for:
Femto base station obtains the working frequency points of each adjacent cell in the Neighboring Cell List of this community and Neighboring Cell List, scrambler, SNR value and PCCPCHRSCP value;
Select SNR value and PCCPCHRSCP value in described Neighboring Cell List all to exceed the community of predetermined threshold, form the list of candidate synchronization reference cell;
If described candidate synchronization reference cell list is not empty, then the community that prioritizing selection SNR value is maximum from this candidate synchronization reference cell list is as reference synchronization community;
If described candidate synchronization reference cell list is empty, then re-start intercepting adjacent cell in network; If described candidate synchronization reference cell list is still for empty after repeatedly intercepting, then arranging this community is isolated island community, and Femto base station processes according to isolated island community;
Self-configuring module, for the information according to each adjacent cell listened to, obtain the Neighboring Cell List of this Femto base station, working frequency points, scrambler, the maximum transmission power of Femto base station and the maximum transmission power of UE, and complete the automatic configuration of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE;
Set timer module, periodically optimizes timer for arranging;
Self-optimizing module, for optimizing timer to after date when described periodicity, carries out Automatic Optimal operation; Specifically comprise: radio frequency is set to listen mode by Femto base station, again intercept the information of each adjacent cell in network; According to the information of the up-to-date each adjacent cell listened to, again obtain the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE, and complete the Automatic Optimal of the maximum transmission power of the Neighboring Cell List of this Femto base station, working frequency points, scrambler, maximum transmission power and UE;
The reference synchronization community acquisition module be connected respectively with described self-configuring module, self-optimizing module, for after the Neighboring Cell List obtaining this Femto base station, before the working frequency points that obtains this Femto base station, according to the information of each adjacent cell listened to, obtain the reference synchronization community of this Femto base station;
Cell synchronous module, for selecting free timeslot execution cycle property intercell synchronous;
Judge module, for when cyclic cell synchronization failure, checks whether also there is candidate synchronization reference cell, if exist, then continues to perform intercell synchronous to next reference synchronization community; If do not exist, then directly perform SON self-configuring flow process.
7. a distributed Femto base station system, is characterized in that, comprises the implement device of SON at least one distributed Femto base station system as claimed in claim 6.
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| CN103763756B (en) * | 2014-01-03 | 2016-09-14 | 南京熊猫电子股份有限公司 | A kind of Femtocell quick start method |
| CN103796275B (en) * | 2014-01-13 | 2017-11-03 | 山东闻远通信技术有限公司 | A kind of method and system that self-organization network is built based on Cellular Networks |
| CN103945398B (en) * | 2014-04-03 | 2017-07-28 | 北京邮电大学 | The network coverage and capacity optimization system and optimization method based on fuzzy neural network |
| CN103945403A (en) * | 2014-04-29 | 2014-07-23 | 京信通信***（中国）有限公司 | Frequency point configuration method and equipment |
| CN104113854B (en) * | 2014-07-08 | 2018-03-27 | 京信通信***（中国）有限公司 | A kind of method and device for intercepting the subframe comprising common down channel |
| CN105592508A (en) * | 2014-10-29 | 2016-05-18 | 中兴通讯股份有限公司 | Method and apparatus for establishing radio access network node adjacent cell relations |
| CN105228168B (en) * | 2015-10-27 | 2019-04-12 | 京信通信***（中国）有限公司 | Smallcell scale group network system and method and Smallcell, centralized-control center |
| CN109413677B (en) * | 2018-12-19 | 2022-06-07 | 京信网络***股份有限公司 | Cell parameter configuration method and device, base station and parameter management system |
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