CN101179812A - Dynamic baseband assignment based interference band measuring method - Google Patents
Dynamic baseband assignment based interference band measuring method Download PDFInfo
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- CN101179812A CN101179812A CNA2007100775522A CN200710077552A CN101179812A CN 101179812 A CN101179812 A CN 101179812A CN A2007100775522 A CNA2007100775522 A CN A2007100775522A CN 200710077552 A CN200710077552 A CN 200710077552A CN 101179812 A CN101179812 A CN 101179812A
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Abstract
The invention discloses an interference fringe measuring method based on a dynamic baseband distribution, which is applied to the mobile communication field of GSM. The method includes the following steps: within a given time, an interference fringe baseband pool used for measuring the interference fringe is structured by using a free baseband resource in the baseband pool. And a free carrier frequency used for measuring the interference fringe is took out from a base-station carrier frequency list. The free carrier frequency and the baseband resource in the interference fringe baseband pool are bound together, and the free carrier frequency interference fringe is measured. By adopting the method in the invention, a problem that the interference fringe fails to be measured regularly measured regularly owing to the shortage of baseband is solved, and the problem of channel distribution is also solved appropriately.
Description
Technical field
The present invention relates to a kind of interference fringe method of measurement of GSM field of mobile communication, relate in particular to a kind of interference fringe method of measurement of distributing based on dynamic base band.
Background technology
GSM has obtained using widely in worldwide as second generation mobile cellular communication system.In the method for present industry base band traffic assignments, base-band resource and logic carrier frequencies are static configuration, and baseband processing equipment and radio frequency unit are corresponding one by one, all bind same logic carrier frequencies.
In the real network environment, professional distribution in time is very unbalanced, and the traffic peak of a sub-district is likely that the N of average traffic (N is a natural number) doubly.In existing distribution method, will waste base-band resource in the most of the time to the baseband equipment that these cell configuration are fixing, and may form complementation with this sub-district in other cell business volume simultaneously.If adopt dynamic base band method for distributing business, give the sub-district that needs with the base-band resource flexible allocation, base-band resource and radio frequency resource dynamic binding are realized the base-band resource utilization maximization to an area, to saving cost very big benefit are arranged; In addition, when LTE Baseband Processing Unit breaks down, can allocate base-band resource, have good fault-tolerance by baseband pool.
Make the field at communication apparatus of new generation, radio frequency stretch system is caused concern gradually, typical framework is that base transceiver station BTS is divided into two part: BBU (Base Band Unit, Base Band Unit) and RRU (Remote Radio Unit, radio frequency is far put the unit).BBU is made up of GBP (Base BandProcess, LTE Baseband Processing Unit), and a plurality of base-band resources concentrate in together, and primordial band pond can be shared for a plurality of RRU; RRU then provides the radio frequency processing function of signal, adopts optical fiber to connect between the two, constitutes the radio frequency stretch system framework.When the system architecture that radio frequency zooms out having occurred, base-band resource and radio frequency resource separate, and the dynamic assignment of base-band resource just becomes possibility.
But the dynamic assignment of base-band resource has been brought a difficult point, is exactly the measurement problem of radio frequency interference band.Base-band resource and radio frequency resource dynamic binding, radio frequency resource often under the situation more than base-band resource, have determined that some radio frequency unit does not have base-band resource to bind with it at some constantly.Do not have the radio frequency interference band behind the base-band resource just can't normally measure, this has significant impact to the channel allocation strategy, can have influence on system index.
Therefore, prior art awaits improving and development.
Summary of the invention
Problem to be solved by this invention is to provide a kind of interference fringe method of measurement of distributing based on dynamic base band, and this method can solve because of the not enough problem that can't normally measure interference fringe of base-band resource.
In order to solve the problems of the technologies described above, the technical scheme of the inventive method comprises:
A kind of interference fringe method of measurement of distributing based on dynamic base band is used for the carrier frequency interference fringe of measure GSM system, and it comprises the steps:
A, in the time of setting, utilize the idle base-band resource in the baseband pool, construct an interference fringe baseband pool that is used to measure interference fringe;
B, from base station carrier tabulation, take out the idle carrier frequency that is used to measure interference fringe;
C, the base-band resource in described idle carrier frequency and the described interference fringe baseband pool is bound, and idle carrier frequency interference fringe is measured.
Described interference fringe method of measurement wherein, also comprises step before the described steps A:
A0, pre-assigned labels of structure reclaims baseband pool in described baseband pool.
Described interference fringe method of measurement wherein, also comprises the steps: in the described steps A
Whether the base-band resource number that is currently available for the measurement interference fringe in A1, the described baseband pool of inspection is less than measuring the required base-band resource number of interference fringe;
A2 is if then reclaim from described pre-assigned labels and take out several base-band resources the baseband pool;
A3, several base-band resources that take out are added in the described baseband pool, constitute described interference fringe baseband pool, and the total number of current all base-band resources is not less than the base-band resource number that can be used for measuring interference fringe in this interference fringe baseband pool.
Described interference fringe method of measurement wherein, also comprises the idle carrier frequency of checking in the base station carrier tabulation in the described steps A 1.
Described interference fringe method of measurement wherein, comprises the steps: among the described step B
B1, the described interference fringe baseband pool of traversal are taken out and are currently available for the base-band resource of measuring interference fringe;
B2, basis are currently available for the number of the base-band resource of measuring interference fringe, take out several idle carrier frequency from described base station carrier tabulation, and the number of described idle carrier frequency equate with the number of described base-band resource.
Described interference fringe method of measurement, wherein, among the described step B2, the mode of finding out idle carrier frequency from described base station carrier tabulation is that the mode that the repeating query of employing order is searched is carried out.
Described interference fringe method of measurement, wherein, the base-band resource existence of described baseband pool comprises that idle condition, BCCH carrier frequency preassignment state, preassignment state, interference fringe distribution state, distribution state and mark reclaim state.
The inventive method is selected idle base-band resource from baseband pool, form an interference fringe baseband pool, and base-band resource in the interference fringe baseband pool and idle carrier frequency bound together, interference fringe is measured, thereby solved the problem that normally to measure interference fringe because of the base band number deficiency, and the channel allocation problem is properly settled.
Description of drawings
Fig. 1 is base-band resource state transition diagram in the baseband pool of the present invention;
Fig. 2 is the BTS carrier frequency tabulation figure of the inventive method;
Fig. 3 is the realization flow figure of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
Design principle of the present invention: adopt dynamic base band method for distributing business, introduce the notion of baseband pool, construct an interference fringe baseband pool that is used to measure the carrier frequency interference fringe, with base-band resource and the binding of idle logic carrier frequencies, carry out the measurement of idle carrier frequency interference fringe, realize base-band resource utilization maximization an area.
Baseband pool is the summation of base-band resource that all have disposed and available, and as shown in Figure 1, as can be seen, the base-band resource in the baseband pool has the BaseBandSta of 6 kinds of different states to exist, and is respectively:
1, idle condition BASEBAND_IDLE_ST
2, BCCH carrier frequency preassignment state BASEBAND_BCCH_PREASSIGN_ST
With base-band resource of the fixing binding of each BCCH carrier frequency;
3, preassignment state BASEBAND_PREASSIGN_ST
Common carrier frequency and base-band resource are bound in advance;
4, interference fringe distribution state INF_ASSIGN_ST
Base-band resource is used to measure the interference fringe of idle carrier frequency;
5, distribution state BASEBAND_ASSIGN_ST
After receiving that channel activates message, carrier frequency and base-band resource binding;
6, mark reclaims state BASEBAND_RECYCLED_ST
When BTS provides the recyclable signal of base band, only carry out record, base band is masked as the recovery state, do not carry out actual reclaimer operation.
See also accompanying drawing 1, traffic assignments request/traffic assignments reclaims the state transition of message-driven base band, channel activation/channel deexcitation message is that traffic assignments request/traffic assignments reclaims one of them example of message, and they also may be that dynamic service connect message/dynamic service is torn continuous message etc. open.When the BTS system is in initial condition, base-band resource carries out preassignment, is respectively applied for binding BCCH carrier frequency, interference fringe is measured and common carrier frequency preassignment; Correspondingly, base-band resource moves into BCCH carrier frequency preassignment state, interference fringe distribution state and preassignment state respectively from Idle state, and the base band that is used for the interference fringe measurement begins idle carrier frequency is carried out repeating query, and regularly measures the interference fringe of each idle carrier frequency at interval.
After base-band resource is received new activation message, selection algorithm according to the dynamic assignment base-band resource, can select a base band to bind from the base-band resource that is in preassignment state, mark recovery state and interference fringe distribution state, at this moment, the base band state will be moved to distribution state.
Receive the message of channel deexcitation when base-band resource after, the base band state will be moved to mark from distribution state and be reclaimed state; At this moment, base band and carrier frequency are no longer bound.
In order to realize the selection algorithm of dynamic assignment base-band resource, needing a pre-assigned labels recovery baseband pool to come preservation state is the base-band resource that preassignment or mark reclaim, and searches when making things convenient for the dynamic assignment base-band resource.
As shown in Figure 3, the invention provides a kind of interference fringe method of measurement of distributing based on dynamic base band, its realization flow comprises the steps:
310, be in initial condition in the BTS system, the base-band resource in the baseband pool is carried out preassignment, construct a pre-assigned labels and reclaim baseband pool;
When base-band resource is carried out preassignment, suppose in the described baseband pool that the wireless quantity of carrier frequency is M, base band quantity is N, the sub-district number is n, in the present embodiment, the situation of M greater than N only is discussed; Then
The number of idle carrier frequency is M-N in the baseband pool, and in the pre-allocation process, can get different values as required, reclaims baseband pool at pre-assigned labels, reserves different number base-band resources and is used to measure interference fringe; In the present embodiment, the number of reserving base-band resource be at least min ((M-N)/2, n) individual; Wherein (n) represent to get integer value minimum among (M-N)/2 and the n, and this integer value is more than or equal to 1 in (M-N)/2 for min; M, N, n are natural number, and M is not equal to N;
320, in the time T of setting, search and be currently available for the idle base-band resource number of measuring interference fringe and the idle carrier frequency in the tabulation of BTS carrier frequency in the baseband pool; Wherein, described time T is controlled by a timer;
330, check whether ((M-N)/2 n), are then to go to step 340, otherwise go to step 350 the base band number that is used to measure interference fringe in the current baseband pool less than min;
340, reclaim from pre-assigned labels and take out b base-band resource the baseband pool, and it is added in the baseband pool, constitute an interference fringe baseband pool, and in this interference fringe baseband pool the total number of current all base-band resources more than or equal to the number of described idle carrier frequency;
That is, suppose to reclaim from pre-assigned labels and take out a idle base-band resource that is used to measure interference fringe the baseband pool, a the base-band resource that takes out added in the baseband pool, constitute a new interference fringe baseband pool; Simultaneously, suppose that the base-band resource number that pre-assigned labels reclaims in the baseband pool is c, this moment b be min ((min (and (M-N)/2, n)-a), c); It is pointed out that in different time sections T because the difference of traffic carrying capacity, the base band number (b+a) that is used to measure interference fringe may be different; Wherein, in the present embodiment, a, b are natural number;
350, the described interference fringe baseband pool of traversal is taken out the base-band resource that can be used for measuring idle carrier frequency interference fringe, and this base-band resource number is (b+a);
360, according to being currently available for the base band number (b+a) of measuring idle carrier frequency interference fringe, from described base station carrier tabulation, take out (b+a) individual idle carrier frequency;
As shown in Figure 2, from the tabulation of BTS carrier frequency, in the time period,, take out (b+a) individual idle carrier frequency successively by putting in order at T; Simultaneously, at next T in the time period, the individual idle carrier frequency of place sequential search (b+a) of last the idle carrier frequency that finds since the last time, when finding BTS carrier frequency tabulation end, circulation searching from the beginning again, so repeating query;
The individual idle carrier frequency of (b+a) that 370, will take out and current (b+a) individual base-band resource that is used for the interference fringe measurement are bound;
380, carrying out the radio frequency interference band in described setting-up time section T measures;
390, in the next time period T that sets, repeating step 320 to 380.
Wherein, in the step 340, when carrying out dynamic base band traffic assignments, according to service needed, base-band resource in the interference fringe baseband pool may be used to bind carrier frequency resource, after the Business Processing of being correlated with, will no longer carry out interference fringe and measure, the base band of this moment will be deleted from the interference fringe baseband pool.
In sum, the inventive method is selected idle base-band resource from baseband pool, form an interference fringe baseband pool, and base-band resource in the interference fringe baseband pool and idle carrier frequency bound together, interference fringe is measured, thereby solved the problem that normally to measure interference fringe because of the base band number deficiency, and the channel allocation problem is properly settled.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (7)
1. interference fringe method of measurement of distributing based on dynamic base band is used for the carrier frequency interference fringe of measure GSM system, and this method comprises the steps:
A, in the time of setting, utilize the idle base-band resource in the baseband pool, construct an interference fringe baseband pool that is used to measure interference fringe;
B, from base station carrier tabulation, take out the idle carrier frequency that is used to measure interference fringe;
C, the base-band resource in described idle carrier frequency and the described interference fringe baseband pool is bound, and idle carrier frequency interference fringe is measured.
2. interference fringe method of measurement according to claim 1 is characterized in that, also comprises step before the described steps A:
A0, pre-assigned labels of structure reclaims baseband pool in described baseband pool.
3. interference fringe method of measurement according to claim 2 is characterized in that, also comprises the steps: in the described steps A
Whether the base-band resource number that is currently available for the measurement interference fringe in A1, the described baseband pool of inspection is less than measuring the required base-band resource number of interference fringe;
A2 is if then reclaim from described pre-assigned labels and take out several base-band resources the baseband pool;
A3, several base-band resources that take out are added in the described baseband pool, constitute described interference fringe baseband pool, and the total number of current all base-band resources is not less than the base-band resource number that can be used for measuring interference fringe in this interference fringe baseband pool.
4. interference fringe method of measurement according to claim 3 is characterized in that, also comprises the idle carrier frequency of checking in the base station carrier tabulation in the described steps A 1.
5. interference fringe method of measurement according to claim 1 is characterized in that, comprises the steps: among the described step B
B1, the described interference fringe baseband pool of traversal are taken out and are currently available for the base-band resource of measuring interference fringe;
B2, basis are currently available for the number of the base-band resource of measuring interference fringe, take out several idle carrier frequency from described base station carrier tabulation, and the number of described idle carrier frequency equate with the number of described base-band resource.
6. interference fringe method of measurement according to claim 5 is characterized in that, among the described step B2, the mode of finding out idle carrier frequency from described base station carrier tabulation is that the mode that the repeating query of employing order is searched is carried out.
7. according to the arbitrary described interference fringe method of measurement of claim 1 to 6, it is characterized in that the base-band resource existence of described baseband pool comprises that idle condition, BCCH carrier frequency preassignment state, preassignment state, interference fringe distribution state, distribution state and mark reclaim state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100775522A CN101179812B (en) | 2007-11-29 | 2007-11-29 | Dynamic baseband assignment based interference band measuring method |
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| CN2007100775522A CN101179812B (en) | 2007-11-29 | 2007-11-29 | Dynamic baseband assignment based interference band measuring method |
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| CN101179812A true CN101179812A (en) | 2008-05-14 |
| CN101179812B CN101179812B (en) | 2012-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037231A1 (en) * | 2011-09-13 | 2013-03-21 | 中兴通讯股份有限公司 | Method and apparatus for configuring frequency spectrum resource |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070238469A1 (en) * | 2004-12-01 | 2007-10-11 | Matsushita Electric Industrial Co., Ltd. | Radio Network Control Device, Radio Network Control Method, and Communication System |
| CN101051865B (en) * | 2007-03-26 | 2011-10-26 | 中兴通讯股份有限公司 | Broadcasting method on network composed of baseband resource pool and remote end radio frequency unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037231A1 (en) * | 2011-09-13 | 2013-03-21 | 中兴通讯股份有限公司 | Method and apparatus for configuring frequency spectrum resource |
| CN103002451A (en) * | 2011-09-13 | 2013-03-27 | 中兴通讯股份有限公司 | Spectrum resource allocation method and device |
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| CN101179812B (en) | 2012-07-04 |
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