CN103733667A - Method and apparatus for allocating frequency resources - Google Patents

Method and apparatus for allocating frequency resources Download PDF

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Publication number
CN103733667A
CN103733667A CN201180072735.XA CN201180072735A CN103733667A CN 103733667 A CN103733667 A CN 103733667A CN 201180072735 A CN201180072735 A CN 201180072735A CN 103733667 A CN103733667 A CN 103733667A
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China
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frequency resource
user
auxiliary
fru
affiliated subdistrict
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张翼
周华
吴建明
曲桦
孟京
唐睿
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Fujitsu Ltd
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Fujitsu Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Abstract

A method and an apparatus for allocating frequency resources are provided by the embodiments of the invention. The method comprises: frequency divide step, for dividing frequency resources of each cell into main frequency resources, secondary frequency resources and frequency resources in the dynamic buffer according to the predetermined rules; user classification step, for dividing users in each cell into center users and edge users according to the interference of the frequency resources in the center region and edge region of each cell; frequency allocation step, for allocating frequency resources for the request users according to user type of the request users, service priority and channel quality index. With the method and apparatus of the embodiments of the invention, the waiting time of users during the period of resources allocation is reduced, the service quality of users is insured, the impartiality that the resources in the dynamic buffer are used in the each cell is guaranteed, and the utilization of the system frequency resources is enhanced.

Description

Method and apparatus for allocating frequency resources
A kind of frequency resource allocation method and engineering device technique field
The present invention relates to the communications field, more particularly to a kind of frequency resource allocation method and device.Background technology
LTE (Long Term Evolution, Long Term Evolution）Using OFDMA (Orthogonal Frequency Division Multiple Access, OFDM）Access mode, it is 1 that can realize frequency duplex factor as one.In OFDM (Orthogonal Frequency Division Multiplexing, OFDM）In system, the orthogonality between each subchannel has strict requirements.Although the factors such as the skew due to carrier frequency and phase can cause ICI (inter-carrier interference, inter-sub-carrier interference）, but it is available with this interference of correct algorithm reduction of carrier wave and phase.Therefore, the ICI in the cell in LTE system is smaller, and influences ICI of the main interference from minizone of systematic function.In order to solve LTE system the problem of cell edge serious interference, it has been proposed that a variety of solutions, including interference coordination, interference randomization and interference cancellation techniques etc..Interference randomization is that coloured interference is regarded as into white noise sonication, and interference is suppressed using the statistical property of interference, is actually different due to disturbing the statistical property with white noise, this mode is likely to result in larger error.Interference coordination is realized relatively simple, can apply to the business of various bandwidth, and have better effects for AF panel.
The core concept of the interference coordination technique of LTE systems is, using channeling technology, so that the distance of interference source as far as possible, so as to suppress the interference of neighbor cell, improves data rate and the covering of signal to noise ratio and cell edge of the neighbor cell in these resources between neighbor cell.Current interference coordination technique can be divided into three kinds of static coordination, semi-static coordination and full dynamic coordinate.The major advantage of static coordination is that signaling consumption is small, but underaction;Semi-static coordination can then be adjusted according to the change of load, make system optimization in pre-distribution scheme；Full dynamic coordinate is more flexible, but signaling consumption is larger.
Inventor has found that in existing interference coordination technique, most of soft-frequency reuse schemes all have many defects in terms of frequency resource allocation, there is to be solved during the present invention is realized.
It should be noted that the introduction to technical background is intended merely to the convenient explanation clear, complete to technical scheme progress above, and facilitates the understanding of those skilled in the art and illustrate.Can not be merely because these schemes be set forth in the background section of the present invention and think that above-mentioned technical proposal is known to those skilled in the art. The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of frequency resource allocation method and device, to solve deficiency of the current soft-frequency reuse scheme in terms of resource allocation.
One side according to embodiments of the present invention there is provided a kind of frequency resource allocation method, wherein, methods described includes：
The frequency resource of each cell, the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer is divided into according to pre-defined rule by frequency partition step；
User's classifying step, according to the interference of the central area of each cell and the frequency resource of fringe region, is divided into central user and edge customer by the user in each cell；
Frequency allocation step, is request user's dividing frequency resource according to user type, service priority and the quality index of a channel of request user.
Other side according to embodiments of the present invention is there is provided a kind of base station, and the base station is used to carry out frequency resource allocation, wherein, the base station includes：
Frequency partition unit, the frequency resource of each cell is divided into the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer according to pre-defined rule by it；
User's taxon, the user in each cell is divided into central user and edge customer by it according to the interference of the central area of each cell and the frequency resource of fringe region；
Frequency assigning units, it, according to user type, service priority and the quality index of a channel of request user, is request user's dividing frequency resource.
Another aspect according to embodiments of the present invention is there is provided a kind of computer-readable program, wherein when performing the program in a base station, the program causes computer to perform foregoing frequency resource allocation method in the base station.
Another aspect according to embodiments of the present invention causes computer to perform foregoing frequency resource allocation method in a base station there is provided a kind of storage medium for the computer-readable program that is stored with, the wherein computer-readable program.
The beneficial effect of the embodiment of the present invention is：By by user type and service priority size（Or quality index of a channel height）As the benchmark of frequency resource allocation, frequency resource allocation is carried out in the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer, the stand-by period of user is reduced, it is ensured that the service quality of user；By carrying out FRU saltus steps to the user of the frequency resource using dynamic buffer when meeting condition, it is ensured that each cell improves the utilization rate of system frequency resource using the fairness of the resource of dynamic buffer.
With reference to explanation hereinafter and accompanying drawing, only certain exemplary embodiments of this invention is disclose in detail, the original of the present invention is specified Reason can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In the range of the spirit and terms of appended claims, embodiments of the present invention include many changes, modifications and equivalent.
Described for a kind of embodiment and/or the feature that shows can be used in same or similar mode in one or more other embodiments, it is combined with feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term " include/include " refers to the presence of feature, one integral piece, step or component when being used herein, but it is not precluded from the presence or additional of one or more further features, one integral piece, step or component.Brief description of the drawings
Many aspects of the present invention may be better understood with reference to following accompanying drawing.Part in accompanying drawing is not proportional drafting, and is intended merely to show the principle of the present invention.For the ease of showing and describing some parts of the present invention, may to be exaggerated Huo Shrink small for corresponding part in accompanying drawing.The element and feature that element and feature described in a kind of accompanying drawing or embodiment of the present invention can be shown in one or more other accompanying drawings or embodiment are combined.In addition, in the accompanying drawings, similar label represents corresponding part in several accompanying drawings, and may be used to indicate the corresponding component used in more than one embodiment.In the accompanying drawings：
Fig. 1 is the frequency resource allocation method flow chart of the embodiment of the present invention；
Fig. 2 is an implementation method flow chart of the step 101 of embodiment illustrated in fig. 1；
Fig. 3 is an implementation method flow chart of the step 103 of embodiment illustrated in fig. 1；
Fig. 4 is an implementation method flow chart of the step 304 of embodiment illustrated in fig. 3；
Fig. 5 is an implementation method flow chart of the step 305 of embodiment illustrated in fig. 3；
Fig. 6 is an implementation method flow chart of the step 306 of embodiment illustrated in fig. 3；
Fig. 7 is an implementation method flow chart of the step 605 of embodiment illustrated in fig. 6；
Fig. 8 is an implementation method flow chart of the step 702 of embodiment illustrated in fig. 7；
Fig. 9 is an implementation method flow chart of the step 703 of embodiment described in Fig. 7；
Figure 10 is the base station composition schematic diagram of the embodiment of the present invention.Embodiment
Referring to the drawings, by following specification, the foregoing and further feature of the embodiment of the present invention will be apparent.These embodiments are exemplary, are not limitations of the present invention. Embodiment 1
The embodiments of the invention provide a kind of frequency resource allocation method.Fig. 1 is the method flow diagram of the embodiment of the present invention, this method is applied to carry out the base station of frequency resource allocation, and base station here can refer to the macro base station in LTE system, such as eNB, small base station is may also mean that, such as RRH, Pico, Relay HeNB.Fig. 1 is refer to, this method includes：
The frequency resource of each cell, the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer is divided into according to pre-defined rule by frequency partition step 101；
User's classifying step 102, according to the interference of the central area of each cell and the frequency resource of fringe region, is divided into central user and edge customer by the user in each cell；
Frequency allocation step 103, is request user's dividing frequency resource according to user type, service priority and the quality index of a channel of request user.
Fig. 1 is refer to, in a step 101, frequency resource unit can be used（FRU, Frequency resource unit) it is used as the basic allocation unit block in the division of initial static frequency resource, rather than be allocated originally in units of subcarrier, overhead during for management frequency resource is so considerably reduced, is that the adjustment of dynamic frequency resource remains surplus.Simultaneously in the division of frequency resource, in addition to basic frequency resource and auxiliary frequency resource, dynamic buffer is also introduced（DB, Dynamic Buffer), high-quality service is provided the user as far as possible, while also ensureing that system has higher frequency efficiency.
Fig. 2 is the flow chart of an embodiment of the step 101 of the present embodiment, refer to Fig. 2, the frequency resource of each cell is divided into the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer, be may comprise steps of：
Step 201:Sum frequency resource is divided based on FRU granularities, the FRU numbers that sum frequency resource is included are determined；
Wherein, FRU English full name is Frequency resource unit, i.e. frequency resource unit.It is the elementary cell of frequency distribution in method provided in an embodiment of the present invention.Its size can be modified according to actual conditions, in one embodiment, once after FRU sizes are determined, operations all thereafter will be operated according to the FRU determined before, halfway without change.
Wherein, the present embodiment determines continuous subcarrier number inside FRU according to business need, and according to known total bandwidth value, namely total frequency resource, sum frequency resource is divided into several continuous FRU.
Step 202:The FRU numbers and cell number included according to sum frequency resource determines dynamic buffer Initial capacity；
Wherein, dynamic buffer DB is the dynamic capacity pond of resource allocation fine setting, and it also acts as the decision device of dynamically distributes adjustment.In the whole assigning process of frequency resource, when basic frequency resource and auxiliary frequency resource can not all meet the resource allocation request of user, the frequency resource that will be called in DB.
In one embodiment, can be according to below equation（1) the FRU numbers included in the initial appearance ma π/total frequency bands of ^ for determining the frequency resource of dynamic buffer
In the first mouth paddy of DB=1 ( 1 )
Cell sum+1 in enclosing
Wherein, DB capacity can change as base station is adjusted.If the DB initial capacities obtained by above-mentioned formula are not integers, the initial capacity as DB is rounded downwards to obtained value.
Step 203:The grade of each cell is determined according to each cell load amount；
Wherein, the load capacity of cell can be determined according to the distribution of each Zone, Zone QoS grades and community user number in base station range, then the cell grade distribution model proposed according to embodiments of the present invention determines the frequency allocation level of all cells in scope by cell classification thresholds.
In one embodiment, for the different priority factor of the traffic assignments of different Q os grades, the unified load capacity of each cell, the division for the major-minor frequency resource for finally unifying load capacity using this to determine each cell are determined further according to the number of users for ordering each business.
In one embodiment, the load capacity that load weighting obtains unique user can be carried out according to the business QOS grades of each user, the load capacity of all users in cell is added the load capacity as cell.In one embodiment, can be according to below equation（2) cell classification thresholds are determined：
Gain for threshold value value=Fan Wei Sui little Hidden amounts and (2)
(in the range of number of cells）
Below by way of illustration cell grade assigning process：
Assuming that the load capacity that the load capacity that the load capacity that the load capacity that the load capacity that the load capacity that the load capacity of cell 1 is 540, cell 2 is 510, cell 3 is 380 cells 4 is 370, cell 5 is 240, cell 6 is 210, cell 7 is 200.The total load amount of cell is 2450 in base station range, determines that formula obtains gain for threshold value value as 50 according to using upper threshold value.It assign load capacity is minimum in 7 cells 200 as threshold reference, namely the threshold value of grade 1 is 200, then the threshold value for having grade 2 is that 200+50=250, the threshold value of grade 3 are that 250+50=300, the threshold value of class 4 are that 300+50=350, the threshold value of class 5 are that 350+50=400, threshold value of class 6 is that 400+50=450, the threshold value of grade 7 are 450+50=500.It can be seen that, the higher cell of grade point, its load capacity is bigger, and the FRU numbers of the basic frequency resource allocation of the corresponding cell can be more.Therefore, cell 12 is that grade 7, cell 34 are Class 4, cell 5,6,7 are grade 1.
Step 204:Determine the frequency resource of dynamic buffer according to the initial capacity of the dynamic buffer, and according to the grade of cell number and each cell in remaining frequency resource, it is determined that the basic frequency resource and auxiliary frequency resource of each cell.
Wherein, the present embodiment calculates the DB initial capacities obtained according to aforementioned formula, the division of DB frequency ranges is carried out accordingly, determine DB frequency resource, then, allocation level according to cell, number of cells, discrete FRU distribution is carried out to the primary band of all cells in scope, obtain the basic frequency resource of each cell, the frequency resource in addition to DB frequency resource and the basic frequency resource of each cell as each cell auxiliary frequency resource.
80 FRU are included with sum frequency resource below, 7 cells are had, cell 1,2 is that grade 7, cell 3,4 are that the frequency partition to the present embodiment is illustrated exemplified by class 4, cell 5,6,7 are grade 1.
First, according to formula（1) initial capacity for determining dynamic buffer is 10, according to an embodiment, it is determined that numbering 71-80 FRU is the frequency resource of dynamic buffer.
Then, for remaining numbering 1-70 FRU, the basic frequency resource to each cell carries out discrete FRU distribution.
Table 1 divides a citing of distribution for the FRU of main frequency resource：
Table 1
As shown in table 1, due to having three classes according to the interior cell of cell allocation level, base station range, namely：The density highest of first kind cell 1,2, resource, row dividing frequency 3/3 can be all taken per sub-distribution;Occupy row 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16.Secondly, often the density of Equations of The Second Kind cell 3,4 distribute three meetings and be allocated resource, row dividing frequency 2/3 twice;Occupy bad IJ 1,2,4,5,7,8,10,11,13,14,16.3rd class cell 5,6,7 density are minimum, often distribute three meetings and are allocated first resource, row dividing frequency 1/3;Occupy row 1,4,7,10,13, (16).
It is distributed according to the FRU of table 1, it is known that, numbering 71-80 FRU is the frequency resource in dynamic buffer, For cell 1, the FRU of numbering 01,08,12,14,21,25,27,34,38,40,47,51,53,60,64,66 be cell 1 basic frequency resource, numbering 02-07,09-11,13,15-20,22-24,26,28-33,
35- 37,39,41-46,48-50,52,54-59,61-63,65, the auxiliary frequency resource that 67-70 is cell 1；For cell 2, numbering 02,09,13,15,22,26,28,35,39,41,48,52,54,61,65,67 be cell 2 basic frequency resource, numbering 01,03-08,10-12,14,16-21,23-25,27,29-34,
36- 38,40,42-47,49-51,53,55-60,62-64,66, the auxiliary frequency resource that 68-70 is cell 2.The respective basic frequency resource of cell 3- cells 7 and auxiliary frequency resource are obtained by that analogy.Numbering 71-80 is the frequency resource of dynamic buffer.
In the present embodiment, the distribution method of frequency resource is unrelated with the specific relative degrees size of cell, table 2 is that cell 1,2 is that class 6, cell 3,4 are that grade 3, cell 5,6,7 are grade 1, and the FRU of basic frequency resource divides the citing of distribution：
Table 2
As shown in table 2, it is contemplated that the relative distribution of minizone is respectively allocated 7 FRU than row, every 25 FRU, cell 1,2, and cell 3,4 is respectively allocated 4 FRU, and cell 5,6,7 is respectively allocated 1 FRU.
Table 3 divides another citing of distribution for the FRU of main frequency resource, in this citing, is with the shared 60FRU frequency resources in addition to DB frequency resource, and cell 1,2,3 be class 5, cell 4,5,6 be grade 3, and cell 7 is exemplified by grade 1：
1 2 3 4 5 6 7 8 9 10 11 60
The cells 1 of FRU 01 08 14 17 24 30 33 40 46 49 56
Patrol 02 09 15 18 25 31 34 41 47 50 57 cells 2
03 10 16 19 26 32 35 42 48 51 58 cells 3
04 11 20 27 36 43 52 59 cells 4
Sequence
05 12 21 28 37 44 53 60 cells 5
Number 06 13 22 29 38 45 54 cells 6
07 23 39 55 cells 7 Table 3
As shown in table 3, every 16 FRU, cell 1,2,3 is respectively allocated 3 FRU, and cell 4,5,6 is respectively allocated 2 FRU, and cell 7 is allocated 1 FRU.Distribution method is identical with Tables 1 and 2.
Three above table is the citing to FRU frequency resource allocations, and the present embodiment is not in this, as limitation, as long as ensureing that the basic frequency resource of all cells in base station range is distributed for discrete FRU.
Pass through the resource allocation methods shown in Fig. 2, based on FRU granularities, the frequency resource of each cell in base station range is divided for the frequency resource of basic frequency resource, auxiliary frequency resource and dynamic buffer, overhead during for management frequency resource is reduced, is that the adjustment of dynamic frequency resource remains surplus.Because the basic frequency to all cells in base station range has carried out discrete FRU distribution so that request user is reduced by the interference of other cells by scattered.Due to refer to dynamic buffer as the shared frequency resource of the user of all cells, high-quality service can be provided the user, while also ensure that the frequency efficiency of system.
It refer to Fig. 1, in a step 102, base station can be according to center of housing estate region and the annoyance level of the frequency resource of fringe region, user is classified, user is divided into central user and edge customer, for central user, due to nearer from base station, it is smaller by outer area interference, it is possible to be carried out data transmission using low-power, and it is then just the opposite for edge customer.Therefore, for central user, typically carried out data transmission using auxiliary frequency resource；It is general to be carried out data transmission using basic frequency resource for edge customer.In embodiments of the present invention, the resource of dynamic buffer is also refer to, cell is without idle auxiliary frequency resource where central user, and its basic frequency resource can not be in use, can call the resource of dynamic buffer to carry out data transmission；Cell is without idle basic frequency resource where edge customer, and its auxiliary frequency resource can not be in use, can also call the resource of dynamic buffer to carry out data transmission.The embodiment of the present invention determines to distribute to the frequency resource of user by classifying to user, while providing the user high-quality service, also ensure that the frequency efficiency of system.
Fig. 1 is refer to, in step 103, how to call basic frequency resource or auxiliary frequency resource or the frequency resource of dynamic buffer used in request user, can be realized by the method shown in Fig. 3, refer to Fig. 3, this method includes：
Step 301:Customer service application has been detected whether, if customer service application, then step 302 has been performed, has otherwise continued to detect；
Step 302:Obtain the distribution condition of the attribute information of request user and the major-minor frequency resource of request user affiliated subdistrict；
Step 303:Judge that user type is central user or edge customer according to the attribute information of request user, such as Fruit is central user, then performs step 304, if edge customer, then performs step 305;Step 304:Judge that the request user affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets, if it is present distributing the auxiliary frequency resource of its affiliated subdistrict for the request user, otherwise perform step 306;
Step 305:Judge that the request user affiliated subdistrict whether there is the basic frequency resource for the condition that meets, if it is present distributing the basic frequency resource of its affiliated subdistrict for the request user, otherwise perform step 306;
Step 306:Dynamic buffer is judged with the presence or absence of idle frequency resource, if it is present distributing the frequency resource of dynamic buffer for request user, the frequency resource of dynamic buffer is otherwise monitored in the given time.
In one embodiment, step 304 can specifically be realized by the method shown in Fig. 4, refer to Fig. 4, and this method includes：
Step 401:Detection request user affiliated subdistrict whether there is the auxiliary frequency resource of the first kind, and the auxiliary frequency resource of the first kind refers to：It is the idle auxiliary frequency resource of this cell, and the auxiliary frequency resource of the free time does not correspond to the basic frequency resource of neighbor cell around, if there is and meet customer service demand, then be judged as existing and meet the auxiliary frequency resource of condition, step 404 is performed, step 402 is otherwise performed;
Wherein, for central user, cell first where detection targeted customer is with the presence or absence of idle auxiliary frequency resource, and this portion of secondary frequency resource is not the around corresponding basic frequency resource in neighbor cell, if there is and meet customer service demand, then it is assumed that there is the auxiliary frequency resource of the condition of satisfaction.
Step 402:Detection request user affiliated subdistrict whether there is the auxiliary frequency resource of Equations of The Second Kind, and the auxiliary frequency resource of Equations of The Second Kind refers to：It is the idle auxiliary frequency resource of this cell, and the auxiliary frequency resource of the free time corresponds to the basic frequency resource of neighbor cell around, but the part resource is not used in the surrounding neighbor cell, if there is and meet customer service needs, then it is judged as there is the auxiliary frequency resource for the condition that meets, step 404 is performed, step 403 is otherwise performed;Wherein, if the resource that step 401 is detected has been used up, or this part resource can not meet customer service needs, then base station obtains the situation that edge customer in the neighbor cell for asking user affiliated subdistrict distributes basic frequency resource, with the presence or absence of idle auxiliary frequency resource in detection request user affiliated subdistrict, and this portion of secondary frequency resource exactly corresponds to the unappropriated basic frequency resource in neighbor cell, if there is and meet customer service demand, then be also considered as existing and meet the auxiliary frequency resource of condition.
Step 403:Detection request user affiliated subdistrict whether there is the 3rd auxiliary frequency resource of class, and the auxiliary frequency resource of the 3rd class refers to：It is the idle auxiliary frequency resource in addition to both the above situation of this cell, if there is and meet customer service demand, then it is judged as there is the auxiliary frequency resource for the condition that meets, performs step 404, is otherwise judged as being not present the auxiliary frequency resource for the condition that meets； Wherein, if the resource that step 402 is detected has been used up, or the part resource can not meet customer service demand, then the base station detection remaining idle auxiliary frequency resource of cell, if there is the auxiliary frequency resource for being then also considered as having the condition that meets.
Step 404:It is that user distributes above-mentioned auxiliary frequency resource according to the order of customer service priority from high to low.If customer service priority is identical, according to the order of quality index of a channel from big to small, it is that user distributes above-mentioned auxiliary frequency resource, then updates the frequency resource information of request user affiliated subdistrict.
In one embodiment, step 305 can specifically be realized by the method shown in Fig. 5, refer to Fig. 5, and this method includes：
Step 501:Detection request user affiliated subdistrict whether there is first kind basic frequency resource, and the first kind basic frequency resource refers to：It is the idle basic frequency resource of this cell, and the idle basic frequency resource is not used by corresponding to the auxiliary frequency resource of surrounding neighbor cell, if there is and meet customer service needs, then it is judged as there is the basic frequency resource for the condition that meets, step 503 is performed, step 502 is otherwise performed;
Wherein, for edge customer, the basic frequency resource with the presence or absence of the free time in this cell is detected first, and the idle basic frequency resource is used corresponding to the auxiliary frequency resource of surrounding neighbor cell.If there is and meet the demand of customer service, then it is assumed that there is the basic frequency resource of the condition of satisfaction.
Step 502:Detection request user affiliated subdistrict whether there is Equations of The Second Kind basic frequency resource, and the Equations of The Second Kind basic frequency resource refers to：The idle basic frequency resource in addition to case above of this cell, if there is and meet customer service demand, then be judged as existing and meet the basic frequency resource of condition, perform step 503, be otherwise judged as being not present the basic frequency resource for the condition that meets；
Wherein, if the resource that step 501 is detected has been used up, or the part basic frequency resource can not meet customer service demand, then detect the remaining basic frequency resource of cell, if there is and meet the demand of customer service and then think to exist and meet the basic frequency resource of condition.
Step 503:It is that user distributes above-mentioned basic frequency resource according to the order of customer service priority from high to low.If customer service priority is identical, according to the order of quality index of a channel from big to small, it is that user distributes above-mentioned basic frequency resource, then updates the frequency resource information of request user affiliated subdistrict.
Wherein, during Fig. 4 and Fig. 5 frequency resource allocation, all it is to be allocated according to the order of customer service priority from high to low, if there is customer service priority identical situation, then the distribution of frequency resource is carried out according to the quality index of a channel value order from big to small of reporting of user.In one embodiment, after frequency resource allocation is completed, the frequency resource information for the request user affiliated subdistrict that to upgrade in time carries out frequency resource allocation and tune after being It is whole to preserve necessary data.
In one embodiment, step 306 can be realized by the method shown in Fig. 6, refer to Fig. 6, and this method includes：
Step 601:Dynamic buffer is monitored with the presence or absence of idle frequency resource；
Step 602:If it is present being the frequency resource in the request user distribution dynamic buffer, and update the frequency resource information of the dynamic buffer according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small；
Step 603:If it does not exist, then judging whether to have exceeded default time threshold, if it is, terminating, step 601 is otherwise performed.
Wherein, default time threshold be one can with the amount of adjusting and optimizing, its selection have of both consider：On the one hand this threshold value can not be too small, is otherwise unable to reach the purpose of fully detection frequency resource；On the other hand it also can not be too big, if it exceeds the limit that user can wait until but user's on-hook, then can cause the waste of overhead.Therefore need that above-mentioned two aspects are weighed and optimized in practice, twice of average time that this initial time threshold value taken in the embodiment of the present invention for needed for user's distribution obtains frequency resource.
According to embodiments of the present invention, the service priority size and quality index of a channel height of application user have been taken into full account in dynamic frequency resource allocation, the frequency resource of central area and fringe region is classified according to annoyance level, is gone to detect the frequency resource for meeting user's request successively by base station.If the frequency resource for meeting business demand can not be obtained in this cell, user can apply for the frequency resource using dynamic buffer to base station, in this process, base station carries out the distribution of frequency resource still according to service priority size and the quality index of a channel height of application user.
But, frequency resource in dynamic buffer is limited after all, according to the method for the present embodiment, base station combines feedback adjustment link and dynamic buffer, if it find that frequency resource utilization exceedes after initial fixed proportion in dynamic buffer, then by using FRU Hop (FRU saltus steps）Technology carries out feedback regulation to the service condition in DB.It is described in detail below in conjunction with accompanying drawing.
In one embodiment, Fig. 6 is continued referring to, after it have updated the frequency resource of dynamic buffer, this method is further comprising the steps of：
Step 604:Judge whether the utilization rate of frequency resource in dynamic buffer exceedes preset ratio, if it is, performing step 605, otherwise continue to detect whether new application；
Step 605:FRU saltus steps are carried out to the user of the frequency resource using dynamic buffer according to preset rules, the frequency resource information of dynamic buffer is then updated. Wherein, if the frequency resource utilization rate in dynamic buffer exceedes the fixed proportion initially set, then illustrate that base station needs to carry out the utilization rate that FRU Hop carry out optimization frequency resource, so that the original user using dynamic buffer frequency resource of a part transfers to use the corresponding frequency in its affiliated subdistrict by appropriate handoff technique, so as to reach the purpose for fully excavating either own cell frequency resource；Otherwise base station proceeds detection.
Wherein, complete base station after FRU Hop need also exist for upgrading in time cell frequency resource information and dynamic buffer in frequency resource information, to be used for other users applied.
To make the FRU saltus steps process of step 605 more clear understandable, illustrated below in conjunction with Fig. 7.Fig. 7 is refer to, this method includes：
Step 701:It is determined that needing the user type for carrying out FRU saltus steps, if central user, then perform step 702, if edge customer, then step 703 is performed;
Wherein, when frequency resource utilization exceedes the ratio initially set in dynamic buffer, base station first looks at frequency resource allocation record, the cell label and customer attribute information for the frequency resource for being assigned to most dynamic buffers are obtained, this certain customers is defined as to the user for needing to carry out FRU saltus steps.
Wherein, initial setting ratio above is not an invariable value, this ratio can be appropriate in practical operation adjustment, so as to ensure the utilization rate for ensureing system frequency while user's interference is optimized, but if setting is too small, the utilization rate of frequency resource in DB, effect on the contrary then that system call interception can be reduced can then be reduced, it is impossible to fully demonstrate the advantage of DB designs.
Wherein, the user type that can be determined to need to carry out the user of FRU saltus steps according to the customer attribute information got is central user or edge customer；
Step 702:Judge the auxiliary frequency resource for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets, if it is present being the auxiliary frequency resource for needing the user for carrying out FRU saltus steps to distribute its affiliated subdistrict, otherwise perform step 704;
Step 703:Judge the basic frequency resource for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets, if it is present being the basic frequency resource for needing the user for carrying out FRU saltus steps to distribute its affiliated subdistrict, otherwise perform step 704;
Step 704:Update the frequency resource information in dynamic buffer.
In one embodiment, step 702 can be realized by the method shown in Fig. 8, refer to Fig. 8, and this method includes：
Step 801:Detection needs the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the auxiliary frequency resource of the first kind, The auxiliary frequency resource of the first kind refers to：It is the idle auxiliary frequency resource of this cell, and the auxiliary frequency resource does not correspond to the basic frequency resource of neighbor cell around, if there is and meet customer service demand, then be judged as existing and meet the auxiliary frequency resource of condition, step 805 is performed, step 802 is otherwise performed;
Wherein, if the central user of certain cell is assigned to frequency resource in DB at most, then checked whether that user can be with FRU Hop according to following orders are as much as possible:First the cell where detection targeted customer is with the presence or absence of idle auxiliary frequency resource, and be not the around corresponding basic frequency resource in neighbor cell, if there is and meet customer service demand, then think there is the auxiliary frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU saltus steps.
Step 802:Detection needs the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the auxiliary frequency resource of Equations of The Second Kind, and the auxiliary frequency resource of Equations of The Second Kind refers to：It is the idle auxiliary frequency resource of this cell, and the auxiliary frequency resource corresponds to the basic frequency resource of neighbor cell around, but the part resource is not used in the surrounding neighbor cell, if there is and meet customer service demand, then it is judged as there is the auxiliary frequency resource for the condition that meets, step 805 is performed, step 803 is otherwise performed;
Wherein, if the business demand of user is used up or can not met to the frequency resource that step 801 is detected, base station obtains edge customer in the neighbor cell of the user affiliated subdistrict for needing to carry out FRU saltus steps and distributes the situation of basic frequency resource immediately, detect in the user affiliated subdistrict with the presence or absence of idle auxiliary frequency resource, and this portion of secondary frequency resource exactly corresponds to the unappropriated basic frequency resource in neighbor cell, if there is and meet customer service demand, then think there is the auxiliary frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU saltus steps.
Step 803:Detection needs the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the 3rd auxiliary frequency resource of class, and the auxiliary frequency resource of the 3rd class refers to：The idle auxiliary frequency resource in addition to both the above situation of this cell, if there is and meet customer service demand, then be judged as existing and meet the auxiliary frequency resource of condition, perform step 805, otherwise perform step 804;
Wherein, if customer service demand is used up or be unable to reach to the frequency resource that step 802 is detected, then go to detect the remaining idle auxiliary frequency resource of cell, if there is and meet customer service demand, then think there is the auxiliary frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU saltus steps.
Step 804:Detection needs to carry out the user affiliated subdistrict of FRU saltus steps with the presence or absence of idle basic frequency resource, if there is and meet customer service demand, then by auxiliary frequency resource of the basic frequency resource conversion for its affiliated subdistrict, and it is judged as the auxiliary frequency resource in the presence of the condition that meets, step 805 is performed, is otherwise judged as being not present the auxiliary frequency resource for the condition that meets； Wherein, if customer service demand is used up or be unable to reach to the frequency resource that step 803 is detected, then go to detect the basic frequency resource that cell is idle, if there is and meet customer service demand, then the auxiliary frequency resource that the basic frequency resource conversion is the cell, then think there is the auxiliary frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU saltus steps.
Wherein, if the business demand of user is used up or can not met to the frequency resource that step 804 is detected, illustrate that such user can not carry out FRU Hop, the frequency resource information returned in step 704 renewal DB.
Step 805:It is that user distributes above-mentioned auxiliary frequency resource according to the order of customer service priority from high to low.If customer service priority is identical, according to the order of quality index of a channel from big to small, it is that user distributes above-mentioned auxiliary frequency resource, then updates the frequency resource information of request user affiliated subdistrict.
In one embodiment, step 703 can be realized by the method shown in Fig. 9, refer to Fig. 9, and this method includes：
Step 901:Detection needs the user affiliated subdistrict for carrying out FRU saltus steps to whether there is first kind basic frequency resource, and the first kind basic frequency resource refers to：It is the idle basic frequency resource of this cell, and the basic frequency resource corresponds to the auxiliary frequency resource of surrounding neighbor cell and is not used by, if there is and meet customer service demand, then be judged as existing and meet the basic frequency resource of condition, step 904 is performed, step 902 is otherwise performed;
Wherein, if the edge customer of certain cell is assigned to frequency resource in DB at most, checked whether that user can be with FRU Hop according to following orders are as much as possible:First detect in the cell with the presence or absence of idle basic frequency resource, and they are not used corresponding to the auxiliary frequency resource of surrounding neighbor cell, if there is and meet the requirement of customer service, then think there is the basic frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU Hop.
Step 902:Detection needs the user affiliated subdistrict for carrying out FRU saltus steps to whether there is Equations of The Second Kind basic frequency resource, and the Equations of The Second Kind basic frequency resource refers to：The idle basic frequency resource in addition to case above of this cell, if there is and meet customer service demand, then be judged as existing and meet the basic frequency resource of condition, perform step 904, otherwise perform step 903;
Wherein, if the business demand of user is used up or can not met to the frequency resource that step 901 is detected, then go to detect the remaining idle basic frequency resource of cell, if there is and meet the requirement of customer service, then think there is the basic frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU Hop.
Step 903:Detection needs to carry out the user affiliated subdistricts of FRU saltus steps with the presence or absence of idle auxiliary frequency resource, if there is and meet user's request, then the auxiliary frequency rate resource conversion is the basic frequency resource of its affiliated subdistrict, and sentence Break to have the basic frequency resource for the condition that meets, perform step 904, be otherwise judged as being not present the basic frequency resource for the condition that meets；
Wherein, if the business demand of user is used up or can not met to the frequency resource that step 902 is detected, then go to detect the auxiliary frequency resource that cell is idle, if there is and meet the requirement of customer service, then the basic frequency resource that the auxiliary frequency rate resource conversion is the cell, now think there is the basic frequency resource for the condition that meets, can be to this certain customers according to step 805 progress FRU Hop.
Wherein, if the business demand of user is used up or can not met to the frequency resource that step 903 is detected, illustrate that such user can not carry out FRU Hop, the frequency resource information returned in step 704 renewal DB.
Step 904:It is the user's distribution basic frequency resource for needing to carry out FRU saltus steps, and update the frequency resource information of its affiliated subdistrict according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small.
In the present embodiment, in FRU Hop frequency adjustment process, the frequency resource information for the respective cell that to be upgraded in time if adjusting successfully；Frequency resource information in going to update DB again after the completion of some cell FRU Hop are detected and are adjusted.
In the present embodiment, if it find that using the most cell more than one of DB number of resources, the time interval that FRU Hop adjustment is so carried out according to respective cell before carries out FRU Hop adjustment from big to small, it is assumed herein that default time is at intervals of infinity if FRU Hop adjustment was not carried out before such user, if these cells did not carried out FRU Hop adjustment before, the order of adjustment is determined according to information such as cell sequence number or cell frequency resources.
In the present embodiment, the part used in DB exceedes after some fixed proportion of total DB resources, why it is since being used the most cell of DB frequency resources, on the one hand it is because community user is relatively low in all many probability of center and peripheral, on the other hand if since being used the minimum cell of DB frequency resources, DB can be caused to use the further deterioration of distribution, so that using the cell more than DB resources obtain it is more, using the few cell of DB resources obtain it is less, so as to produce the unjustness used for DB.
In the present embodiment, the trigger condition that base station carries out FRU saltus steps is that utilization rate exceedes the ratio initially set in DB frequency resources, rather than in DB resources all using complete situation.Such set leaves certain surplus to the adjustment of system, avoid using up the new user for appearance between system FRU transition detections in DB frequency resources and produce bottleneck effect, then the expense that system repeatedly inquires about idle frequence resource is reduced, while being also user optimization stand-by period and service quality. By the FRU jump techniques of the embodiment of the present invention, the stand-by period of user is on the one hand reduced, it is ensured that the service quality of user；On the other hand fairness of each cell using the frequency resource of dynamic buffer is also ensure that, the utilization rate of system frequency resource is improved.
Pass through the method for the embodiment of the present invention, user is classified according to the annoyance level in center of housing estate region and the frequency resource of fringe region base station, according to service priority size and the quality index of a channel height of application user, go to detect that targeted customer affiliated subdistrict whether there is the frequency resource for meeting user's request successively.If user can not obtain frequency resource, the frequency resource of dynamic buffer can be applied for base station according to identical principle.In addition, the utilization rate of resource in DB is detected in base station in real time, if it find that when it exceedes initial setting ratio, then carrying out FRU Hop to adjust frequency resource allocation, optimizing base station frequency utilization rate.
In a word, the resource allocation methods of the embodiment of the present invention, basic allocation unit block is used as using frequency resource module FRU in the division of initial static frequency resource first, rather than be allocated originally in units of subcarrier, overhead during for management frequency resource is so considerably reduced, is that the adjustment of dynamic frequency resource remains surplus.Secondly it is original to introduce dynamic buffer, high-quality service is provided the user as far as possible, while also ensureing that base station has higher frequency efficiency.Again, the present invention is proposed as the different priority factor of the traffic assignments of different Q os grades, the unified load of each cell, the division for the major-minor sub-carrier resources for finally unifying load using this to determine each cell are determined further according to the number of users for ordering each business.In addition, the present invention uniquely employs discrete frequency allocation method so that targeted customer is reduced by the interference of other cells by scattered；The service priority size and quality index of a channel height of application user have been taken into full account in dynamic frequency resource allocation, the frequency resource of central area and fringe region is classified according to annoyance level, is gone to detect the frequency resource for meeting user's request successively by base station.If the frequency resource for meeting business demand can not be obtained in this cell, the frequency resource using dynamic buffer can be applied for base station, the service priority size still according to application user and quality index of a channel height are allocated in this process.But the frequency resource in DB is limited after all, base station combines feedback adjustment link and dynamic buffer above-mentioned, if it find that frequency resource utilization exceedes after initial fixed proportion in DB, base station carries out feedback regulation by using FRU Hop technologies to the service condition in DB.So as on the one hand reduce the stand-by period of user, it is ensured that the service quality of user；On the other hand it also ensure that each cell uses the fairness of DB resources, improve the utilization rate of base station frequency resource.
The embodiment of the present invention additionally provides a kind of base station, as described in the following examples 2, because the principle that the present embodiment solves problem is same as Example 1, and its specific implementation may be referred to the implementation of embodiment 1, repeats part and repeats no more. Embodiment 2
The embodiments of the invention provide a kind of base station, the base station is used to carry out frequency resource allocation.Figure 10 is the composition schematic diagram of base station provided in an embodiment of the present invention, refer to Figure 10, the base station includes：
Frequency partition unit 11, the frequency resource of each cell is divided into the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer according to pre-defined rule by it；
User's taxon 12, the user in each cell is divided into central user and edge customer by it according to the interference of the central area of each cell and the frequency resource of fringe region；
Frequency assigning units 13, it, according to user type, service priority and the quality index of a channel of request user, is request user's dividing frequency resource.
In one embodiment, frequency partition unit 11 includes：
First determining module 111, it is divided based on FRU granularities to sum frequency resource, determines the FRU numbers that sum frequency resource is included；
Second determining module 112, its FRU number included according to sum frequency resource and cell number determine the initial capacity of dynamic buffer；
3rd determining module 113, it determines the grade of each cell according to each cell load amount；
4th determining module 114, it determines the frequency resource of dynamic buffer according to the initial capacity of the dynamic buffer, and according to the grade of cell number and each cell in remaining frequency resource, it is determined that the basic frequency resource and auxiliary frequency resource of each cell.
In one embodiment, frequency assigning units 13 include：
5th determining module 131, it determines to ask the type of user according to the attribute information of request user；First distribute module 132, it is when asking user-center user, judge that request user affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets, in the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, auxiliary frequency resource is distributed for the request user, and updates the frequency resource information of request user affiliated subdistrict；It is the frequency resource that the request user distributes dynamic buffer when being judged as being not present.
Wherein, first distribute module 132 specifically for：
When the auxiliary frequency resource of the auxiliary frequency resource that meets customer service demand of the request user affiliated subdistrict in the presence of the free time, and the free time does not correspond to the basic frequency resource of neighbor cell around, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise There is the idle auxiliary frequency resource for meeting customer service demand in request user affiliated subdistrict, and the auxiliary frequency resource of the free time corresponds to the basic frequency resource of neighbor cell around, but when the part resource is not used in the surrounding neighbor cell, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
When asking user affiliated subdistrict to there is the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets.
In another embodiment, frequency assigning units 13 also include：
Second distribute module 133, it is when it is edge customer to ask user, judge that request user affiliated subdistrict whether there is the basic frequency resource for the condition that meets, in the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, basic frequency resource is distributed for the request user, and updates the frequency resource information of request user affiliated subdistrict；It is the frequency resource that the request user distributes dynamic buffer when being judged as being not present.
Wherein, second distribute module 133 specifically for：
When being not used by request user affiliated subdistrict in the presence of the idle basic frequency resource for meeting customer service demand, and the idle basic frequency resource corresponding to the auxiliary frequency resource of surrounding neighbor cell, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
When asking user affiliated subdistrict to there is the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets.
In one embodiment, the first distribute module 132 and the second distribute module 133 include respectively：
First judging submodule 1321,1331, it judges dynamic buffer with the presence or absence of idle frequency resource；Distribution sub module 1322,1332, it is in the presence of first judging submodule 1321,1331 is judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, auxiliary frequency resource or basic frequency resource are distributed for the request user, and updates the frequency resource information of the dynamic buffer；First processing module 1323,1333, it is judged as being not present in first judging submodule 1321,1331, and during more than default time threshold, terminates, and otherwise continues to monitor dynamic buffer with the presence or absence of idle frequency resource.
Wherein, first distribute module 132 and second distribute module 133 are respectively further comprised：
Second judging submodule 1324,1334, it judges whether the utilization rate of frequency resource in dynamic buffer exceedes preset ratio after the frequency resource information that the distribution sub module 1322,1332 updates the dynamic buffer；Second processing submodule 1325,1335, it carries out FRU saltus steps to the user of the frequency resource using dynamic buffer according to preset rules, then updates dynamic slow when second judging submodule 1324,1334 is judged as YES Rush the frequency resource information in area；
3rd processing submodule 1326,1336, it continues to detect whether new application when second judging submodule 1324,1334 is judged as not being.
In one embodiment, second processing submodule 1325,1335 includes respectively：
Judging part 13251,13351, it judges the user type for needing to carry out FRU saltus steps；
First switching part 13252,13352, it is when needing to carry out the user-center user of FRU saltus steps, judge the auxiliary frequency resource for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets, in the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the auxiliary frequency resource to be described, and update the frequency resource information for the user affiliated subdistrict for needing to carry out FRU saltus steps；When being judged as being not present, the frequency resource of dynamic buffer is updated.
Wherein, first switching part 13252,13352 specifically for：
When needing the user affiliated subdistrict for carrying out FRU saltus steps not correspond to the basic frequency resource of neighbor cell around in the presence of the idle auxiliary frequency resource for meeting customer service demand, and the auxiliary frequency resource, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
There is the idle auxiliary frequency resource for meeting customer service demand needing the user affiliated subdistrict for carrying out FRU saltus steps, and the auxiliary frequency resource corresponds to the basic frequency resource of neighbor cell around, but when the part resource is not used in the surrounding neighbor cell, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
When needing the user affiliated subdistrict for carrying out FRU saltus steps to there is the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
There is when meeting the basic frequency resource of customer service demand of free time needing the user affiliated subdistrict for carrying out FRU saltus steps, it is the auxiliary frequency resource for needing to carry out the user affiliated subdistrict of FRU saltus steps by the basic frequency resource conversion, and is judged as the auxiliary frequency resource in the presence of the condition that meets.
In one embodiment, the second processing submodule 1325,1335 also includes：
Second switching part 13253,13353, it judges the basic frequency money for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets；In the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the basic frequency resource to be described, and update the frequency resource information of its affiliated subdistrict；When being judged as being not present, the frequency resource of dynamic buffer is updated.
Wherein, second switching part 13253,13353 specifically for： When needing the user affiliated subdistrict for carrying out FRU saltus steps to be not used by the presence of the idle basic frequency resource for meeting customer service demand, and the basic frequency resource corresponding to the auxiliary frequency resource of surrounding neighbor cell, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
When needing the user affiliated subdistrict for carrying out FRU saltus steps to there is the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
There is when meeting the auxiliary frequency resource of customer service demand of free time needing the user affiliated subdistrict for carrying out FRU saltus steps, it is the basic frequency resource for needing to carry out the user affiliated subdistrict of FRU saltus steps by the auxiliary frequency rate resource conversion, and is judged as the basic frequency resource in the presence of the condition that meets.
Pass through the base station of the embodiment of the present invention, basic allocation unit block is used as using frequency resource module FRU in the division of initial static frequency resource first, rather than be allocated originally in units of subcarrier, overhead during for management frequency resource is so considerably reduced, is that the adjustment of dynamic frequency resource remains surplus.Secondly it is original to introduce dynamic buffer, high-quality service is provided the user as far as possible, while also ensureing that base station has higher frequency efficiency.Again, the present invention is proposed as the different priority factor of the traffic assignments of different Q os grades, the unified load of each cell, the division for the major-minor sub-carrier resources for finally unifying load using this to determine each cell are determined further according to the number of users for ordering each business.In addition, the present invention uniquely employs discrete frequency allocation method so that targeted customer is reduced by the interference of other cells by scattered；The service priority size and quality index of a channel height of application user have been taken into full account in dynamic frequency resource allocation, the frequency resource of central area and fringe region is classified according to annoyance level, is gone to detect the frequency resource for meeting user's request successively by base station.If the frequency resource for meeting business demand can not be obtained in this cell, the frequency resource using dynamic buffer can be applied for base station, the service priority size still according to application user and quality index of a channel height are allocated in this process.But the frequency resource in DB is limited after all, base station combines feedback adjustment link and dynamic buffer above-mentioned, if it find that frequency resource utilization exceedes after initial fixed proportion in DB, base station carries out feedback regulation by using FRU Hop technologies to the service condition in DB.So as on the one hand reduce the stand-by period of user, it is ensured that the service quality of user；On the other hand it also ensure that each cell uses the fairness of DB resources, improve the utilization rate of base station frequency resource.
The embodiment of the present invention additionally provides a kind of computer-readable program, wherein when performing the program in a base station, the program causes computer to perform the frequency resource allocation method described in embodiment 1 in the base station.
The embodiment of the present invention additionally provides a kind of storage medium for the computer-readable program that is stored with, and the wherein computer-readable program causes computer to perform the frequency resource allocation method described in embodiment 1 in a base station. Apparatus and method more than of the invention can be realized by hardware, can also be realized by combination of hardware software.The present invention relates to such computer-readable program, when the program is performed by logical block, the logical block can be made to realize devices described above or component parts, or the logical block is realized various methods or step described above.Logical block is such as the processor used in field programmable logic part, microprocessor, computer.The invention further relates to the storage medium for storing procedure above, such as hard disk, disk, CD, DVD, flash memory.
Above in association with specific embodiment, invention has been described, it will be appreciated by those skilled in the art that these descriptions are all exemplary, it is not limiting the scope of the invention.Those skilled in the art can make various variants and modifications to the present invention according to spirit and principles of the present invention, and these variants and modifications are also within the scope of the invention.

Claims (25)

  1. Claims
    1st, a kind of frequency resource allocation method, wherein, methods described includes：
    The frequency resource of each cell, the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer is divided into according to pre-defined rule by frequency partition step；
    User's classifying step, according to the interference of the central area of each cell and the frequency resource of fringe region, is divided into central user and edge customer by the user in each cell；
    Frequency allocation step, is request user's dividing frequency resource according to user type, service priority and the quality index of a channel of request user.
    2nd, according to the method described in claim 1, wherein, the frequency partition step includes：
    Sum frequency resource is divided based on FRU granularities, the FRU numbers that sum frequency resource is included are determined；The FRU numbers and cell number that are included according to sum frequency resource determine the initial capacity of dynamic buffer；The grade of each cell is determined according to each cell load amount；
    Determine the frequency resource of dynamic buffer according to the initial capacity of the dynamic buffer, and according to the grade of cell number and each cell in remaining frequency resource, it is determined that the basic frequency resource and auxiliary frequency resource of each cell.
    3rd, according to the method described in claim 1, wherein, the frequency allocation step includes：
    The type of request user is determined according to the attribute information of request user；
    If asking user-center user, judge that its affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets；If it is present being that the request user distributes auxiliary frequency resource, and update the frequency resource information of its affiliated subdistrict according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small；If it does not exist, then being the frequency resource in the request user distribution dynamic buffer when dynamic buffer has idle frequency resource.
    4th, method according to claim 3, wherein, judge that its affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets, including：
    If its affiliated subdistrict has an idle auxiliary frequency resource for meeting customer service demand, and the auxiliary frequency resource of free time does not correspond to the basic frequency resource of neighbor cell around, then is judged as the auxiliary frequency resource in the presence of the condition that meets;Otherwise
    If its affiliated subdistrict has an idle auxiliary frequency resource for meeting customer service demand, and the auxiliary frequency resource of the free time corresponds to the basic frequency resource of neighbor cell around, but the part resource is not used in the surrounding neighbor cell, Then it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets.
    5th, method according to claim 3, wherein：
    If request user is edge customer, judge that its affiliated subdistrict whether there is the basic frequency resource for the condition that meets；If it is present being the request user distribution basic frequency resource, and update the frequency resource information of its affiliated subdistrict according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small；If it does not exist, then being the frequency resource in the request user distribution dynamic buffer when dynamic buffer has idle frequency resource.
    6th, method according to claim 5, wherein, judge that its affiliated subdistrict whether there is the basic frequency resource for the condition that meets, including：
    If its affiliated subdistrict has the idle basic frequency resource for meeting customer service demand, and the idle basic frequency resource is not used by corresponding to the auxiliary frequency resource of surrounding neighbor cell, then is judged as there is the basic frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets.
    7th, the method according to claim 3 or 5, wherein, it is the frequency resource in the request user distribution dynamic buffer when dynamic buffer has idle frequency resource, including：
    Judge dynamic buffer with the presence or absence of idle frequency resource；
    If it is present being the frequency resource in the request user distribution dynamic buffer, and update the frequency resource information of the dynamic buffer according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small；
    If it does not, and more than default time threshold, then terminate, otherwise continue to monitor dynamic buffer with the presence or absence of idle frequency resource.
    8th, method according to claim 7, wherein, after the frequency resource information for updating the dynamic buffer, methods described also includes：
    Judge whether the utilization rate of frequency resource in dynamic buffer exceedes preset ratio；
    If it is, carrying out FRU saltus steps to the user of the frequency resource using dynamic buffer according to preset rules, the frequency resource information of dynamic buffer is then updated； If it is not, then continuing to detect whether new application.
    9th, method according to claim 8, FRU saltus steps are carried out according to preset rules to the user of the frequency resource using dynamic buffer, including：
    Judge the user type for needing to carry out FRU saltus steps；
    If necessary to carry out the user-center user of FRU saltus steps, then judge that its affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets；
    If there is, then according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the auxiliary frequency resource to be described, and update the frequency resource information of its affiliated subdistrict；
    If it does not exist, then updating the frequency resource of dynamic buffer.
    10th, method according to claim 9, wherein, judge that its affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets, including：
    If its affiliated subdistrict has an idle auxiliary frequency resource for meeting customer service demand, and the auxiliary frequency resource of free time does not correspond to the basic frequency resource of neighbor cell around, then is judged as the auxiliary frequency resource in the presence of the condition that meets;Otherwise
    If there is the idle auxiliary frequency resource for meeting customer service demand in its affiliated subdistrict, and the auxiliary frequency resource of the free time corresponds to the basic frequency resource of neighbor cell around, but the part resource is not used in the surrounding neighbor cell, then it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle basic frequency resource for meeting customer service demand, the basic frequency resource conversion is the auxiliary frequency resource of its affiliated subdistrict, and be judged as the auxiliary frequency resource in the presence of the condition that meets.
    11st, method according to claim 9, wherein：
    User if necessary to carry out FRU saltus steps is edge customer, then judges that its affiliated subdistrict whether there is the basic frequency resource for the condition that meets；
    If there is, then according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the basic frequency resource to be described, and update the frequency resource information of its affiliated subdistrict；
    If it does not exist, then updating the frequency resource of dynamic buffer. 12nd, the method according to claim 11, wherein, judge that its affiliated subdistrict whether there is the basic frequency resource for the condition that meets, including：
    If its affiliated subdistrict has the idle basic frequency resource for meeting customer service demand, and the basic frequency resource is not used by corresponding to the auxiliary frequency resource of surrounding neighbor cell, then is judged as there is the basic frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
    If its affiliated subdistrict has the idle auxiliary frequency resource for meeting customer service demand, the auxiliary frequency rate resource conversion is the basic frequency resource of its affiliated subdistrict, and be judged as the basic frequency resource in the presence of the condition that meets.
    13rd, a kind of base station, the base station is used to carry out frequency resource allocation, wherein, the base station includes：Frequency partition unit, the frequency resource of each cell is divided into the frequency resource in basic frequency resource, auxiliary frequency resource and dynamic buffer according to pre-defined rule by it；
    User's taxon, the user in each cell is divided into central user and edge customer by it according to the interference of the central area of each cell and the frequency resource of fringe region；
    Frequency assigning units, it, according to user type, service priority and the quality index of a channel of request user, is request user's dividing frequency resource.
    14th, base station according to claim 13, wherein, the frequency partition unit includes：
    First determining module, it is divided based on FRU granularities to sum frequency resource, determines the FRU numbers that sum frequency resource is included；
    Second determining module, its FRU number included according to sum frequency resource and cell number determine the initial capacity of dynamic buffer；
    3rd determining module, it determines the grade of each cell according to each cell load amount；
    4th determining module, it determines the frequency resource of dynamic buffer according to the initial capacity of the dynamic buffer, and according to the grade of cell number and each cell in remaining frequency resource, it is determined that the basic frequency resource and auxiliary frequency resource of each cell.
    15th, base station according to claim 13, wherein, the frequency assigning units include：
    5th determining module, it determines to ask the type of user according to the attribute information of request user；
    First distribute module, it judges that request user affiliated subdistrict whether there is the auxiliary frequency resource for the condition that meets when asking user-center user, in the presence of being judged as, according to customer service priority order from high to low or presses It is that the request user distributes auxiliary frequency resource, and update the frequency resource information of request user affiliated subdistrict according to the order of quality index of a channel from big to small；It is the frequency resource that the request user distributes dynamic buffer when being judged as being not present.
    16th, base station according to claim 15, wherein, first distribute module specifically for：When the auxiliary frequency resource of the auxiliary frequency resource that meets customer service demand of the request user affiliated subdistrict in the presence of the free time, and the free time does not correspond to the basic frequency resource of neighbor cell around, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    There is the idle auxiliary frequency resource for meeting customer service demand in request user affiliated subdistrict, and the auxiliary frequency resource of the free time corresponds to the basic frequency resource of neighbor cell around, but when the part resource is not used in the surrounding neighbor cell, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    When asking user affiliated subdistrict to there is the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets.
    17th, base station according to claim 15, wherein, the frequency assigning units also include：Second distribute module, it is when it is edge customer to ask user, judge that request user affiliated subdistrict whether there is the basic frequency resource for the condition that meets, in the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, basic frequency resource is distributed for the request user, and updates the frequency resource information of request user affiliated subdistrict；It is the frequency resource that the request user distributes dynamic buffer when being judged as being not present.
    18th, base station according to claim 17, wherein, second distribute module specifically for：When being not used by request user affiliated subdistrict in the presence of the idle basic frequency resource for meeting customer service demand, and the idle basic frequency resource corresponding to the auxiliary frequency resource of surrounding neighbor cell, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
    When asking user affiliated subdistrict to there is the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets.
    19th, the base station according to claim 15 or 17, wherein, first distribute module and second distribute module include respectively：
    First judging submodule, it judges dynamic buffer with the presence or absence of idle frequency resource；
    Distribution sub module, it is in the presence of first judging submodule is judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, is that the request user distributes auxiliary frequency resource Or basic frequency resource, and update the frequency resource information of the dynamic buffer；
    First processing module, it is judged as being not present in first judging submodule, and during more than default time threshold, terminates, and otherwise continues to monitor dynamic buffer with the presence or absence of idle frequency resource.
    20th, base station according to claim 19, wherein, first distribute module and second distribute module are respectively further comprised：
    Second judging submodule, it judges whether the utilization rate of frequency resource in dynamic buffer exceedes preset ratio after the frequency resource information that the distribution sub module updates the dynamic buffer；
    Second processing submodule, it carries out FRU saltus steps to the user of the frequency resource using dynamic buffer according to preset rules, then updates the frequency resource information of dynamic buffer when second judging submodule is judged as YES；3rd processing submodule, it continues to detect whether new application when second judging submodule is judged as not being.
    21st, base station according to claim 20, the second processing submodule includes：
    Judging part, it judges the user type for needing to carry out FRU saltus steps；
    First switching part, it is when needing to carry out the user-center user of FRU saltus steps, judge the auxiliary frequency resource for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets, in the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the auxiliary frequency resource to be described, and update the frequency resource information for the user affiliated subdistrict for needing to carry out FRU saltus steps；When being judged as being not present, the frequency resource of dynamic buffer is updated.
    22nd, base station according to claim 21, wherein, first switching part specifically for：
    When needing the user affiliated subdistrict for carrying out FRU saltus steps not correspond to the basic frequency resource of neighbor cell around in the presence of the idle auxiliary frequency resource for meeting customer service demand, and the auxiliary frequency resource, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    There is the idle auxiliary frequency resource for meeting customer service demand needing the user affiliated subdistrict for carrying out FRU saltus steps, and the auxiliary frequency resource corresponds to the basic frequency resource of neighbor cell around, but when the part resource is not used in the surrounding neighbor cell, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    When needing the user affiliated subdistrict for carrying out FRU saltus steps to there is the idle auxiliary frequency resource for meeting customer service demand in addition to both the above situation, it is judged as there is the auxiliary frequency resource for the condition that meets；Otherwise
    Needing the user affiliated subdistrict for carrying out FRU saltus steps to there is when meeting the basic frequency resource of customer service demand of free time, be the auxiliary frequency resource for needing to carry out the user affiliated subdistrict of FRU saltus steps by the basic frequency resource conversion, and It is judged as there is the auxiliary frequency resource for the condition that meets.
    23rd, base station according to claim 21, wherein, the second processing submodule also includes：Second switching part, it judges the basic frequency money for needing the user affiliated subdistrict for carrying out FRU saltus steps to whether there is the condition that meets；In the presence of being judged as, according to the order of customer service priority from high to low or the order according to quality index of a channel from big to small, need the user for carrying out FRU saltus steps to distribute the basic frequency resource to be described, and update the frequency resource information of its affiliated subdistrict；When being judged as being not present, the frequency resource of dynamic buffer is updated.
    24th, base station according to claim 23, wherein, second switching part specifically for：When needing the user affiliated subdistrict for carrying out FRU saltus steps to be not used by the presence of the idle basic frequency resource for meeting customer service demand, and the basic frequency resource corresponding to the auxiliary frequency resource of surrounding neighbor cell, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
    When needing the user affiliated subdistrict for carrying out FRU saltus steps to there is the idle basic frequency resource for meeting customer service demand in addition to case above, it is judged as there is the basic frequency resource for the condition that meets；Otherwise
    There is when meeting the auxiliary frequency resource of customer service demand of free time needing the user affiliated subdistrict for carrying out FRU saltus steps, it is the basic frequency resource for needing to carry out the user affiliated subdistrict of FRU saltus steps by the auxiliary frequency rate resource conversion, and is judged as the basic frequency resource in the presence of the condition that meets.
    25th, a kind of computer-readable program, wherein when performing the program in a base station, the program causes frequency resource allocation method of the computer in the base station described in perform claim requirement 1 to any one of claim 12.
    26th, a kind of storage medium for the computer-readable program that is stored with, the wherein computer-readable program cause frequency resource allocation method of the computer in a base station described in perform claim requirement 1 to any one of claim 12.
CN201180072735.XA 2011-09-29 2011-09-29 Method and apparatus for allocating frequency resources Pending CN103733667A (en)

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