CN102843698A - Base station PN self-adaptive assignment method and base station PN self-adaptive assignment device - Google Patents
Base station PN self-adaptive assignment method and base station PN self-adaptive assignment device Download PDFInfo
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Abstract
The invention relates to a base station PN self-adaptive assignment method. The base station PN self-adaptive assignment method comprises the following steps of searching a cell by a base station according to an optimization roaming list, and sequencing PN searched on a selected forward frequency point according to the signal quality Ec/Io; selecting a PN set of which the signal quality Ec/Io is larger than a signal quality threshold from the searched PN; reading increment factor pilot_inc from a cell system message corresponding to the PN with the strongest signal quality in the searched PN; selecting a section and a sub cluster in a PN distribution pattern which is determined according to a PN distribution rule, the pilot_inc and the PN set, and respectively filling the PN in the PN set in corresponding positions of the PN distribution pattern in the section and the sub cluster; and selecting unused last PN in the section and the sub cluster to carry out the PN assignment of the base station according to a clockwise distribution sequence from inside to outside. The invention also relates to a base station PN self-adaptive assignment device. According to the base station PN self-adaptive assignment method and the base station PN self-adaptive assignment device, disclosed by the invention, the automatic allocation for the PN is realized, the same PN interference is avoided, and thus the PN allocation is more reasonable.
Description
Technical field
The present invention relates to code division multiple access (Code Division Multiple Access is called for short CDMA) technology, relate in particular to a kind of base station PN self adaptation assigning method and device.
Background technology
Home eNodeB Femtocell adopts and works in low-power wireless access point (the Access Point that authorizes frequency range; Be called for short AP); With DSL or other broadband access network as backhaul access mobile core net, for the portable terminal of standard (for example the computer of cell phone, installation data card of surfing Internet etc.) provides voice-and-data professional.
Generally, Femtocell AP is mounted in the little base station of indoor low-power and possesses controller function of base station, is commonly called as Home eNodeB, and it has quick deployment, Fast Installation, to characteristics such as the compatibility of mobile service is good.Mix at the PN of present Home eNodeB branch, mainly be the PN sign indicating number (as 6) of reserving several special uses for Home eNodeB, multiplexing in Home eNodeB.
The special-purpose PN of this Home eNodeB needs professional's manual configuration, and it need carry out suitable PN planning when configuration.PN configuration in the cdma network is at present normally earlier divided cluster and submanifold with PN, will bunch with submanifold in PN dispose to close base station, geographical position.
In CDMA PN planning, available PN number is 512, realizes being spaced apart the available PN number of pilot_inc, for example pilot_inc=4 through the pilot tone increment factor pilot_inc that introduces; Then actual available PN number is 512/4=128, and available PN sequence is { 4,8,12; 16,20 ... }.
In view of generally there are 3 sectors each base station, multiplexing all 128 available PN (pilot_inc=4) are come in about 42 base stations, and Fig. 1 is that 128 PN press the form sketch map of submanifold, sector ordering in the prior art.Then the base station in the whole topology area is divided into different bunch Cluster according to the close degree in geographical position, bunch shape as far as possible near square, utilize identical principle to be divided into different submanifold Sub-Cluster again.
Carrying out PN through submanifold splitting scheme as shown in Figure 2 distributes; Take out the PN data of Sector_0 corresponding under the Sub-Cluster1 among Fig. 1 from left to right respectively; Base station under the Sub_Cluster1 in the corresponding diagram 2; Distribute according to clockwise order from the inside to the outside, successively other submanifold is carried out PN according to this rule and distribute, the PN that accomplishes bunch at last distributes.
The PN of Home eNodeB distributes the following problem that exists at present:
1, the PN that reserves is not necessarily enough;
2, PN needs professional's manual configuration;
3, the PN unreasonable allocation causes disturbing with PN.
Summary of the invention
The objective of the invention is to propose a kind of base station PN self adaptation assigning method and device, can be the adaptive appointment in base station PN sign indicating number, need not manual configuration, and can reduce with PN and disturb.
For realizing above-mentioned purpose, the invention provides a kind of base station PN self adaptation assigning method, comprising:
Cell searching is carried out according to optimum roaming list (Preferred Roaming List is called for short PRL) in the base station, and the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io;
Select-out signal quality Ec/Io is greater than the PN set of signal quality thresholding from the said PN that searches;
Read pilot tone increment factor pilot_inc in the pairing cell system message of PN that signal quality is the strongest from the said PN that searches;
Be integrated into the PN that confirms according to the PN allocation rule according to said pilot tone increment factor and said PN and distribute and select sector and submanifold in the pattern, and the PN that the PN in the said PN set inserts sector and the submanifold of selection is respectively distributed the correspondence position of pattern;
The PN that the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carries out said base station assigns.
For realizing above-mentioned purpose, the invention provides a kind of base station PN self adaptation and assign device, comprising:
Forward direction frequency point selection unit is used for selecting the forward direction frequency and carrying out Cell searching according to the optimum roaming list that preserve the base station;
The PN sequencing unit is used for the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io;
PN gathers selected cell, is used for the PN set greater than the signal quality thresholding from the said PN select-out signal quality Ec/Io that searches;
The Pilot_inc reading unit is used for from the strongest pairing cell system message of PN of the said PN signal quality that searches, reading pilot tone increment factor pilot_inc;
Distribute the pattern reading unit, be used to read the PN that confirms according to the PN allocation rule and distribute pattern;
Sector submanifold selected cell is used for being integrated into definite PN distribution pattern selection sector and submanifold according to said pilot tone increment factor and said PN;
The PN assignment unit; Be used for the correspondence position that PN that PN with said PN set inserts sector and the submanifold of selection respectively distributes pattern, the PN that the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carries out said base station assigns.
Based on technique scheme; The present invention chooses the PN set that conforms to quality requirements among the PN that searches in the forward direction frequency; And distribute the PN that selects the figure not to be used to carry out PN according to the pairing pilot tone increment factor of the strongest PN of signal quality and PN set from the PN that is fit to and assign; Thereby not only realized the automatic configuration of PN, and avoided disturbing, made that the PN configuration is more reasonable with PN.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is that 128 PN data are pressed the form sketch map of submanifold, sector ordering in the prior art.
Fig. 2 is a base station PN data allocations sketch map in the prior art.
Fig. 3 is the schematic flow sheet of an embodiment of base station of the present invention PN self adaptation assigning method.
Fig. 4 is the base station PN data allocations sketch map behind application drawing 3 embodiment.
Fig. 5 is the schematic flow sheet of another embodiment of base station of the present invention PN self adaptation assigning method.
Fig. 6 assigns the structural representation of an embodiment of device for base station of the present invention PN self adaptation.
Fig. 7 assigns the structural representation of another embodiment of device for base station of the present invention PN self adaptation.
Fig. 8 assigns the structural representation of the another embodiment of device for base station of the present invention PN self adaptation.
Fig. 9 assigns the structural representation of an embodiment again of device for base station of the present invention PN self adaptation.
Embodiment
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
As shown in Figure 3, be the schematic flow sheet of an embodiment of base station of the present invention PN self adaptation assigning method.In the present embodiment, the base station is Home eNodeB Femtocell, and the PN self adaptation of Home eNodeB assigns flow process to comprise:
Tabulate according to PRL and carry out Cell searching in step 101, base station, and the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io;
Read pilot tone increment factor pilot_inc in step 103, signal quality is the strongest from the said PN that searches the pairing cell system message of PN;
The PN that step 105, the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carry out said base station assigns.
In the present embodiment, the base station also need have the receiver function that receives the forward direction frequency except having the receiver function that receives reverse frequency, thereby realizes the search to each PN in each forward direction frequency.Owing to possibly have a plurality of frequencies in the PRL tabulation; Therefore when carrying out Cell searching; Can select to disturb less and the lighter forward direction frequency of load to carry out the PN search; Than disturbing, then more likely have enough PN to supply configuration, and then bigger probability is accomplished the PN appointment than big and the heavier forward direction frequency of load.
Can obtain pilot_inc and PN set from step 102 and step 103, just can confirm that with at least a in these two kinds of parameters corresponding PN distributes pattern, the PN distribution pattern here can be with reference to figure 2.Wherein pilot_inc identifies the interval between the adjacent pilot frequencies PN; For instance; The pilot_inc that reads in the pairing cell system message of PN that signal quality is the strongest among the PN that searches is 4, at this moment, is spaced apart 4 between the adjacent pilot frequencies PN; Actual available PN number then is 512/4=128, just can determine PN according to certain PN allocation rule according to this information and distribute pattern.
This PN that confirms according to the PN allocation rule that in some base station, possibly prestore distributes pattern, then directly reads this PN this moment and distributes pattern, carries out the selection of sector, submanifold; And if this type PN that do not prestore in the base station distributes pattern; Perhaps its PN that prestores distributes pattern not meet needs; For example to distribute pattern to be based on pilot_inc be the 3 distribution patterns that construct for its PN; And the pilot_inc that from the pairing cell system message of the strongest PN of signal quality, reads is 4, then can not directly use this PN to distribute pattern, at this moment just can generate PN according to the PN allocation rule and distribute pattern.
The PN allocation rule has provided example in Fig. 1,2, simple declaration is once more here: confirm actual available PN sequence according to pilot_inc earlier, define the multiplexing all available PN in what base stations according to the sector number that each base station had again.In concrete PN distributes; Can make available PN be divided into different groups according to a definite sequence; Again the base station in the whole topology area is divided into different bunches according to the close degree in geographical position, and bunch shape near square, utilize same or analogous rule will bunch further be divided into different submanifolds again; And all available PN data are corresponding to one bunch, and have comprised different PN data in the different submanifold.Mix at branch, can carry out the distribution of PN according to clockwise order from inside to outside.But it should be noted that the PN allocation rule of being introduced is merely example here, also still can use, as space is limited, just introduced no longer one by one here for other feasible PN allocation rule the present invention.
In step 104, several kinds of exercisable modes are selected also to have in sector and submanifold, for example distribute at PN and select the strongest pairing sector of PN and the submanifold of signal quality in the pattern, this selection mode is easy, easy operating; Also can distribute in the pattern at PN and select to comprise in the PN set sector and the submanifold of PN at most, this mode can be selected the better quality of signal immediate area more easily, and avoids selecting good especially but the zone that distance is far away of some PN signal qualitys; Or confirm sector and submanifold according to the several preferably PN of signal in the PN ordering, rather than only maximum according to comprising PN in that sector and the submanifold, also can be comprehensively more than several kinds of selection modes, through testing more suitable a kind of of selection.Concrete selection mode can be configured according to concrete network characteristics.
Present embodiment also can be used in the PN distribution of femto base station Pico or cdma base station except the PN that is applicable to Home eNodeB Femtocell distributes.
As shown in Figure 4, be the base station PN data allocations sketch map behind application drawing 3 embodiment.In this example, the pilot_inc that in step 102 and 103, obtains is 4, and the PN value of strongest signal quality is 84; Signal quality meets the requirements of PN set ordering for { 84; 36,120,116; 164}, this moment, the PN according to strongest signal quality selected the 1st sector and the 1st submanifold from PN distribution pattern.PN in the PN set is inserted the relevant position (to be coated with the numeral of ash) in the 1st sector and the pairing PN distribution of the 1st submanifold pattern respectively; So except the position that these have been inserted; The position of not inserting then belongs to the PN that is not used in sector and the submanifold; At this moment, then abideing by clockwise from inside to outside allocation order selects the last PN (148) that is not used in this sector and the submanifold to carry out the PN appointment of base station.
As shown in Figure 5, be the schematic flow sheet of another embodiment of base station of the present invention PN self adaptation assigning method.Compare with a last embodiment, present embodiment considers that also the sector of selection and the PN in the submanifold all are used, possibly cause PN to assign the processing mode of failing, as follows:
If sector that step 106 is selected and the PN in the submanifold all are used, then reselect the sector and the submanifold that comprise time many PN in the said PN set, carry out the appointment with PN of inserting of PN set according to the sector of reselecting and submanifold.
For the sector of PN more than this time and the situation that submanifold still all has been used, then can consider to change a ventrocephalad frequency, promptly step 107 if all comprise the sector of the PN in the said PN set and the PN in the submanifold all is used, is then reselected the forward direction frequency.Thereby carry out the selection of definite and sector and the submanifold of PN set and pilot_inc again, the PN up to the base station assigns and accomplishes.Can reduce to assign the possibility of failure through step 106 or step 107 because of the PN that reserves causes PN inadequately.
The variation of considering the base station is than very fast; If the untimely PN that carries out upgrades, then possibly cause disturbing or wrong generation, therefore in another embodiment of the invention; Also comprised the activation opportunity of PN self adaptation appointment flow process, just carried out the PN self adaptation when for example powering on and assign flow process in the base station; Also can be according to predetermined period, for example to certain time of every day just carry out the PN self adaptation and assign flow process; Assign flow process if hope to avoid to carry out the PN self adaptation, then also can select free time (for example period in morning etc.) to carry out the PN self adaptation as required and assign flow process in the rush hour.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Structural representation as shown in Figure 6, assign an embodiment of device for base station of the present invention PN self adaptation.PN self adaptation in base station assigns device can be arranged among the Home eNodeB Femtocell in the present embodiment, also can be arranged on outside the Home eNodeB Femtocell, and Femtocell links to each other with Home eNodeB.Equally, base station PN self adaptation assigns device can also be used in femto base station Pico or the cdma base station, or is arranged on outside femto base station Pico or the cdma base station, links to each other with femto base station Pico or cdma base station.This device specifically comprises: forward direction frequency point selection unit 1, PN sequencing unit 2, PN set selected cell 3, Pilot_inc reading unit 4, distribution pattern reading unit 5, sector submanifold selected cell 6 and PN assignment unit 7.
Forward direction frequency point selection unit 1 is responsible for carrying out Cell searching according to the optimum roaming list of preserving in the base station, and selects the forward direction frequency.Specifically, the less and lighter forward direction frequency of load can be selected to disturb in a plurality of frequencies from optimum roaming list in forward direction frequency point selection unit 1.PN sequencing unit 2 is responsible for the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io.
PN set selected cell 3 is responsible for from the said PN that searches select-out signal quality Ec/Io greater than the PN set of signal quality thresholding.Read pilot tone increment factor pilot_inc in the Pilot_inc reading unit 4 responsible pairing cell system messages of PN that signal quality is the strongest from the said PN that searches.Distribute pattern reading unit 5 to be responsible for reading the PN that confirms according to the PN allocation rule and distribute pattern.
Sector submanifold selected cell 6 is responsible for being integrated into selection sector and submanifold in definite PN distribution pattern according to said pilot tone increment factor and said PN.PN assignment unit 7 is responsible for the PN that the PN in the said PN set inserts sector and the submanifold of selection is respectively distributed the correspondence position of pattern, and the PN that the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carries out said base station assigns.
In the present embodiment, the base station also need have the receiver function that receives the forward direction frequency except having the receiver function that receives reverse frequency, thereby realizes the search to each PN in each forward direction frequency.Present embodiment is through choosing the PN set that conforms to quality requirements among the PN that searches in the forward direction frequency; And distribute the PN that selects the figure not to be used to carry out PN according to the pairing pilot tone increment factor of the strongest PN of signal quality and PN set from the PN that is fit to and assign; Thereby not only realized the automatic configuration of PN; And avoided disturbing with PN, make that the PN configuration is more reasonable.
Structural representation as shown in Figure 7, assign another embodiment of device for base station of the present invention PN self adaptation.Compare with a last embodiment, present embodiment can also comprise and distributes the pattern unit 8 that prestores.Wherein distribute pattern to prestore unit 8 responsible preservations according to the definite PN distribution patterns of PN allocation rule.Distribute pattern reading unit 5 to be responsible for reading to distribute the pattern PN that prestores in the unit 8 that prestores to distribute pattern.
Structural representation as shown in Figure 8, assign the another embodiment of device for base station of the present invention PN self adaptation.Compare with Fig. 6 embodiment, present embodiment can also comprise that distributing pattern generation unit 9, this unit to be responsible for generating PN according to said pilot tone increment factor according to the PN allocation rule distributes pattern.
For Fig. 7 and Fig. 8 embodiment; Sector submanifold selected cell 6 can comprise or combination in the following subelement: the first chooser unit is used for distributing pattern to select the strongest pairing sector of PN and the submanifold of said signal quality at the PN that confirms according to the PN allocation rule; The second chooser unit is used for distributing pattern to select to comprise sector and the submanifold of maximum PN in the said PN set at the PN that confirms according to the PN allocation rule.
As shown in Figure 9, be the structural representation of an embodiment again of base station of the present invention PN self adaptation appointment device.Compare with aforementioned each embodiment, present embodiment also comprises submanifold gravity treatment unit, sector 10, and this unit is responsible in the sector of selecting and the PN in the submanifold when all being used, reselects the sector and the submanifold that comprise time many PN in the said PN set.Only show the example that on Fig. 6 embodiment basis, increases submanifold gravity treatment unit, sector 10 among Fig. 9, in order to the connected mode between this unit and other unit to be described, other variant embodiment have just no longer detailed here.
On the basis that increases submanifold gravity treatment unit, sector 10; Can also in device embodiment, further increase forward direction frequency gravity treatment unit 11 (also illustrating among Fig. 9); This unit is responsible for comprising the sector of the PN in the said PN set and the PN in the submanifold all is used at all, then reselects the forward direction frequency.
In above whole device embodiment; Can further include flow process in the device and activate the unit; When be responsible for powering in said base station in this unit, or according to predetermined period, or select free time to carry out the PN self adaptation and assign flow process; Make present embodiment can carry out PN in time and upgrade, thereby more can reflect network condition truly.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (19)
1. base station PN self adaptation assigning method comprises:
Cell searching is carried out according to optimum roaming list in the base station, and the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io;
Select-out signal quality Ec/Io is greater than the PN set of signal quality thresholding from the said PN that searches;
Read pilot tone increment factor pilot_inc in the pairing cell system message of PN that signal quality is the strongest from the said PN that searches;
Be integrated into the PN that confirms according to the PN allocation rule according to said pilot tone increment factor and said PN and distribute and select sector and submanifold in the pattern, and the PN that the PN in the said PN set inserts sector and the submanifold of selection is respectively distributed the correspondence position of pattern;
The PN that the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carries out said base station assigns.
2. base station according to claim 1 PN self adaptation assigning method, wherein said base station have the receiver function that receives forward direction frequency and reverse frequency.
3. base station according to claim 2 PN self adaptation assigning method wherein also comprises the operation of selecting the forward direction frequency, is specially: select to disturb the less and lighter forward direction frequency of load in a plurality of frequencies from said optimum roaming list.
4. base station according to claim 2 PN self adaptation assigning method; Wherein be integrated into according to said pilot tone increment factor and said PN before the PN that confirms according to the PN allocation rule distributes the operation of selecting sector and submanifold in the pattern; Also comprise: read the PN that confirms according to the PN allocation rule that prestores in the said base station and distribute pattern, or generate PN distribution pattern according to the PN allocation rule according to said pilot tone increment factor.
5. base station according to claim 4 PN self adaptation assigning method wherein is integrated into according to selecting the operation of sector and submanifold to be specially in the definite PN distribution pattern of PN allocation rule according to said pilot tone increment factor and said PN:
Distribute the strongest pairing sector of PN and the submanifold of the said signal quality of selection in the pattern at the PN that confirms according to the PN allocation rule, or
Distribute sector and the submanifold of selecting to comprise maximum PN in the said PN set in the pattern at the PN that confirms according to the PN allocation rule.
6. base station according to claim 1 PN self adaptation assigning method if sector of wherein selecting and the PN in the submanifold all are used, is then reselected the sector and the submanifold that comprise time many PN in the said PN set.
7. base station according to claim 6 PN self adaptation assigning method if wherein all comprise the sector of the PN in the said PN set and the PN in the submanifold all is used, is then reselected the forward direction frequency.
8. base station according to claim 1 PN self adaptation assigning method wherein also comprises:
Said base station or according to predetermined period, or is selected free time to carry out the PN self adaptation and is assigned flow process when powering on.
9. according to the arbitrary described base station of claim 1～8 PN self adaptation assigning method, wherein said base station is Home eNodeB Femtocell, femto base station Pico or cdma base station.
10. a base station PN self adaptation is assigned device, comprising:
Forward direction frequency point selection unit, the optimum roaming list that is used for preserving according to the base station carries out Cell searching, and selects the forward direction frequency;
The PN sequencing unit is used for the PN that searches on the forward direction frequency of choosing is sorted according to signal quality Ec/Io;
PN gathers selected cell, is used for the PN set greater than the signal quality thresholding from the said PN select-out signal quality Ec/Io that searches;
The Pilot_inc reading unit is used for from the strongest pairing cell system message of PN of the said PN signal quality that searches, reading pilot tone increment factor pilot_inc;
Distribute the pattern reading unit, be used to read the PN that confirms according to the PN allocation rule and distribute pattern;
Sector submanifold selected cell is used for being integrated into definite PN distribution pattern selection sector and submanifold according to said pilot tone increment factor and said PN;
The PN assignment unit; Be used for the correspondence position that PN that PN with said PN set inserts sector and the submanifold of selection respectively distributes pattern, the PN that the last PN that selects not to be used in said sector and the submanifold according to clockwise allocation order from inside to outside carries out said base station assigns.
11. base station according to claim 10 PN self adaptation is assigned device, wherein said base station has the receiver function that receives forward direction frequency and reverse frequency.
12. base station according to claim 11 PN self adaptation is assigned device, selects to disturb the less and lighter forward direction frequency of load in a plurality of frequencies of wherein said forward direction frequency point selection unit from said optimum roaming list.
13. base station according to claim 11 PN self adaptation is assigned device, wherein also comprises:
Distribute the pattern unit that prestores, be used to preserve the PN that confirms according to the PN allocation rule and distribute pattern.
14. base station according to claim 11 PN self adaptation is assigned device, wherein also comprises:
Distribute the pattern generation unit, be used for generating PN according to the PN allocation rule and distribute pattern according to said pilot tone increment factor.
15. assign device according to claim 13 or 14 described base station PN self adaptations, wherein said sector submanifold selected cell comprises or combination in the following subelement:
The first chooser unit is used for distributing pattern to select the strongest pairing sector of PN and the submanifold of said signal quality at the PN that confirms according to the PN allocation rule;
The second chooser unit is used for distributing pattern to select to comprise sector and the submanifold of maximum PN in the said PN set at the PN that confirms according to the PN allocation rule.
16. base station according to claim 10 PN self adaptation is assigned device, wherein also comprises:
Submanifold gravity treatment unit, sector is used for when the PN of sector of selecting and submanifold all has been used, reselects the sector and the submanifold that comprise time many PN in the said PN set.
17. base station according to claim 16 PN self adaptation is assigned device, wherein also comprises:
Forward direction frequency gravity treatment unit, the sector and the PN in the submanifold that are used for comprising at all PN of said PN set all are used, then reselect the forward direction frequency.
18. base station according to claim 10 PN self adaptation is assigned device, wherein also comprises:
Flow process activates the unit, when being used for powering in said base station, or according to predetermined period, or select free time to carry out the PN self adaptation and assign flow process.
19. assign device according to the arbitrary described base station of claim 10～18 PN self adaptation, wherein said base station is Home eNodeB Femtocell, femto base station Pico or cdma base station.
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