CN101686553A - Resource adapting method, device and system - Google Patents
Resource adapting method, device and system Download PDFInfo
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- CN101686553A CN101686553A CN200810222973A CN200810222973A CN101686553A CN 101686553 A CN101686553 A CN 101686553A CN 200810222973 A CN200810222973 A CN 200810222973A CN 200810222973 A CN200810222973 A CN 200810222973A CN 101686553 A CN101686553 A CN 101686553A
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Abstract
The invention discloses a resource adapting method, a device and a system. The method comprises the following steps: acquiring characteristic parameters of a short-time frequency spectrum resource; when the current load of a communication cell exceeds the preset threshold, acquiring service characteristics of a terminal bearing a service in the communication cell, and selecting a terminal to be switched to; and according to the characteristic parameters of the short-time frequency spectrum resource, adapting the terminal to be switched to a short-time frequency spectrum resource matching the service characteristics of the terminal to be switched to. The invention considers the short-term availability of the short-time frequency spectrum resource when switching the frequency, and can adaptthe service to the frequency spectrum resource matching the frequency spectrum characteristics, thereby increasing the success ratio of switching and ensuring the QoS characteristic of the service. The invention can overcome the defects of failure to ensure that the service characteristics of the service borne by the terminal match the frequency characteristics of the switched frequency band whenswitching the terminal, failure to ensure the QoS characteristic of the switched service, and the like in the prior art.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to resource adaptation method, Apparatus and system that a kind of network side is initiated.
Background technology
The radio communication frequency spectrum is a kind of preciousness, Limited resources, is distributed, is licensed by unification of the motherland.A frequency range is generally only for independent long-term use of a wireless communication system, and different wireless communication systems uses different frequency ranges, does not disturb mutually.Along with developing rapidly of radio communication, particularly owing to recent service and equipment based on frequency spectrum significantly increases, people are increasing to the demand of frequency spectrum resource, and frequency spectrum resource is deficient day by day.
Current authoring system frequency spectrum resource is a fixed allocation, and power system capacity is fixed and be limited, and along with increasing of terminal number, the system overload situation frequently takes place, and causes the decline of network service performance, reduces user satisfaction, and this is a great problem that present operator faces.And above-mentionedly allocate in advance, static spectrum management mode that long grant is used, make some frequency range loaded service amount very big, and other frequency ranges do not have the user to use in the most of the time, wasted frequency spectrum resource.
Cognitive radio technology (Cognitive Radio, abbreviation CR) appearance, greatly improved the availability of frequency spectrum, alleviated the contradiction between growing wireless traffic demand and the day by day deficient frequency spectrum resource, generally believed it is the preferred plan that solves the low problem of present wireless frequency spectrum utilance.Cognitive radio technology and reconfiguration technology make the frequency spectrum dynamic assignment become possibility.System can obtain the short-term lease frequency spectrum by negotiation mode between network on the one hand, can obtain the detection frequency spectrum resource by cognitive radio technology on the other hand, and the chance formula inserts, thereby the native system capacity is replenished.
In the prior art scheme, take acceptance controlling method to carry out resource allocation for the calling of new initiation, then take switching mode to carry out the heavily distribution of resource for the session that connects, described switching comprises that intra-cell is changed, switch in the base station controller (being BSC), switch between the different B SC of identical mobile switching centre (being MSC), switch between different MS C and different system switching etc.Number of patent application provides alien frequencies blind switching method in a kind of WCDMA system for 200410048779.0 patent application document, in the said method, be each communication cell configuration alien frequencies adjacent area of universal mobile telecommunications system (UMTS) network in advance, and the priority of appointment alien frequencies neighboring interval, according to the communication cell loading condition, trigger urgent the switching, use some better quality of signal to constitute with reference to Candidate Set with the frequency communication cell; Get with reference to all constitute alien frequencies switching target communication cell collection with the common factor of the alien frequencies adjacent area of frequency communication cell in the Candidate Set.In addition, also have the part technical scheme to adopt in the prior art type of service and channel supporting rate are mated the method for carrying out resource allocation.
According to (the European Telecommunications StandardsInstitute of ETSI, be called for short ETSI) related specifications, the description of channel capacity is had only parameters such as frequency information, zero-time, permission transmitting power, the short-time characteristic feature to frequency spectrum resource is not described.
For existing system, most user terminal hardwares or software are not supported the use of other frequency ranges.In addition, even the hardware/software capabilities of terminal, rate travel, bandwidth demand etc. satisfy the condition that alien frequencies switches, because the factors such as temporary and unsteadiness of frequecy characteristic, some type of service is for the requirement of service quality (Quality of Service, be called for short QoS) and be not suitable for being carried on this temporary intersexuality instability frequency.If this type of business of direct-cut operation will produce a series of serious consequences such as call drop by force.
In the Resource Allocation Formula of the prior art, frequency spectrum resource all is long-term available, and for cognitive radio system, secondary user as frequency spectrum resource, the frequency spectrum resource that distributes or use all has ageing, especially for detecting frequency spectrum resource, when authoring system occurs, cognitive radio system this frequency range of must unconditionally soaring, so there is the uncertainty of using duration in the short-term spectrum resource.In sum, the use of the use of short-term spectrum resource and original fixedly long-term allocation frequency spectrum resource has tangible difference.
In realizing process of the present invention, the inventor finds to have following defective in the existing resources method of salary distribution: the short-term availability of 1. not considering the short-term spectrum resource when terminal is switched; 2. can not guarantee terminal loaded service and the frequency characteristic coupling of switching frequency range, handover success rate variance; 3. can not guarantee the QoS characteristic of service switchover, cause user satisfaction to reduce; 4. the phenomenon of transshipping takes place frequently, and throughput of system is limited; 5. do not consider that the short-term spectrum resource expires or unavailable after, the switching problem of institute's bearer service.
Summary of the invention
The objective of the invention is in the resource adaptation method at prior art, when terminal is switched, can not guarantee terminal loaded service and the frequency characteristic coupling of switching frequency range and the defectives such as QoS characteristic of service switchover, propose a kind of resource adaptation method, Apparatus and system.
For achieving the above object, according to an aspect of the present invention, provide a kind of resource adaptation method, having comprised: the characteristic parameter that obtains the short-term spectrum resource; When communication cell present load amount surpass to be set thresholding, just at the service feature of the terminal of bearer service, select to be switched terminal in the obtaining communication sub-district; According to the characteristic parameter of short-term spectrum resource, to be switched terminal is fitted to the short-term spectrum resource that the service feature with to be switched terminal is complementary.
In the technique scheme, the short-term spectrum resource comprises: lease frequency spectrum resource and detection frequency spectrum resource.
In the technique scheme, according to the characteristic parameter of short-term spectrum resource, the step that to be switched terminal is fitted to the short-term spectrum resource that is complementary with service feature specifically can comprise: set service delay and require thresholding; When the service delay of to be switched terminal requires greater than service delay requirement thresholding, to be switched terminal is fitted to the detection frequency spectrum resource; Otherwise, to be switched terminal is fitted to the lease frequency spectrum resource.
In the technique scheme, to be switched terminal is fitted to the step that detects frequency spectrum resource can also comprises afterwards: to be switched terminal is fitted to the longest detection frequency spectrum resource of up duration according to the professional duration order of the expectation of to be switched terminal; When the longest detection frequency spectrum resource full load of up duration, the to be switched terminal of residue is fitted in proper order up duration vice-minister's detection frequency spectrum resource by the professional duration of expectation; Reshuffle the execution base station.
In the technique scheme, the step that to be switched terminal is fitted to the lease frequency spectrum resource can also comprise afterwards: select and the professional duration of expectation of to be switched terminal and/or the lease frequency spectrum resource that service bandwidth is complementary; Obtain the lease frequency spectrum resource that is complementary; To be switched terminal is fitted to the lease frequency spectrum resource that is complementary; Reshuffle the execution base station.
Preferably, can also comprise: detect the short-term spectrum resource and be about to when unavailable, other frequency spectrum resource of selecting the service feature with short-term spectrum resource bearing business to be complementary; The business of short-term spectrum resource bearing is fitted to other frequency spectrum resource.
Preferably, in the technique scheme, the load capacity when the setting thresholding is system's optimum performance.
Preferably, in the technique scheme, select the step of to be switched terminal specifically to comprise: according to the present load amount, set thresholding, in the service feature of the ability of reshuffling of terminal, the translational speed of terminal and terminal one or multinomially obtain to be switched load capacity; According to one in the ability of reshuffling, translational speed, service feature and the to be switched load capacity of terminal or the to be switched terminal of multinomial selection.
For achieving the above object, according to another aspect of the present invention, also provide a kind of resource adaptive device, having comprised: the frequency spectrum sort module is used to obtain the characteristic parameter of short-term spectrum resource; Terminal is selected module, is used in the obtaining communication sub-district selecting to be switched terminal just at the service feature of bearer service terminal; Adaptation module selects module to link to each other with frequency spectrum sort module and terminal, is used for to be switched terminal is fitted to the short-term spectrum resource that is complementary with service feature.
Preferably, the frequency spectrum sort module can comprise: the up duration statistic unit is used to obtain the statistics up duration of detection frequency spectrum resource under specific stability requirement.
Preferably, the frequency spectrum sort module can also comprise: the classification and ordination submodule is used for frequency spectrum resource is classified according to lease frequency spectrum resource and detection frequency spectrum resource, and sorts according to up duration; The Resources list submodule, be used for according to the characteristic parameter of frequency spectrum resource generate the frequency spectrum resource tabulation and to frequency spectrum resource tabulation upgrade.
Preferably, in the technique scheme, terminal selects module to comprise: judge submodule, be used for selecting the to be switched terminal of candidate according to reshuffling ability and/or translational speed; The ordering submodule is used for service feature and/or to be switched load capacity according to the to be switched terminal of candidate, selects to be switched terminal from the to be switched terminal of candidate, and to be switched terminal is required to sort according to service delay.
Preferably, the ordering submodule can also comprise: estimate professional duration unit, be used to estimate to be switched terminal institute's lasting time of bearer service.
For achieving the above object, according to another aspect of the present invention, also provide a kind of resource adaption system, comprised above-mentioned arbitrary resource adaptive device, also comprise: frequency spectrum lease module, the frequency spectrum sort module that is used to obtain the characteristic parameter of lease frequency spectrum resource and is sent to the resource adaptive device; The frequency spectrum detection module is used to obtain characteristic parameter that detects frequency spectrum resource and the frequency spectrum sort module that is sent to the resource adaptive device.
Preferably, above-mentioned resource adaption system can also comprise: load capacity is measured judge module, is used to measure the present load amount of communication cell, when the present load amount surpasses the setting thresholding, initiates resource allocation request to the resource adaptive device; To be switched load capacity computing module is used for according to the present load amount, sets thresholding, the ability of reshuffling of terminal, the translational speed of terminal, and/or the service feature of terminal calculates to be switched traffic carrying capacity.
The resource adaptation method of various embodiments of the present invention, Apparatus and system, owing to when frequency is switched, considered the short-term availability of short-term spectrum resource, business can be fitted to the frequency spectrum resource that is complementary with its service feature, thereby improved success rate for switching, guaranteed professional QoS characteristic, various embodiments of the present invention can also effectively be eliminated the overload phenomenon, increase throughput of system; And some embodiment has considered that also the short-term spectrum resource expires or unavailable situation, thereby has strengthened adaptive integrality of resource of the present invention and exploitativeness.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawing:
Fig. 1 is the flow chart of resource adaptation method embodiment one of the present invention;
Fig. 2 is the schematic diagram of communication cell frequency spectrum resource classification among the resource adaptation method embodiment two of the present invention;
Fig. 3 is the flow chart of resource adaptation method embodiment two intermediate frequency spectrum tagsorts of the present invention;
Fig. 4 is for determining the schematic diagram of to be switched load capacity among the resource adaptation method embodiment three of the present invention;
The flow chart that Fig. 5 selects and sorts for to be switched terminal among the resource adaptation method embodiment three of the present invention;
Fig. 6 is the adaptive schematic diagram of resource among the resource adaptation method embodiment four of the present invention;
The adaptive flow chart of resource that Fig. 7 initiates for network side among the resource adaptation method embodiment four of the present invention;
Fig. 8 analogous diagram of throughput of system when tradition spectrum allocation may and dynamic frequency spectrum deployment when arriving 300 users among the resource adaptation method embodiment four of the present invention 1 hour;
Fig. 9 arrived 300 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=200ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput;
Figure 10 arrived 300 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=80ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput;
Figure 11 arrived 150 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=80ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput;
Among Figure 12 resource adaptation method embodiment four of the present invention, φ=80ms switches to the terminal that detects frequency spectrum resource, when the dynamic spectrum resource allocation methods that uses the present invention to exemplify and traditional frequency spectrum distributing method of not using dynamic adaptation, and the analogous diagram of switching rate;
Figure 13 is among the resource adaptation method embodiment four of the present invention, φ=80ms, switch to the terminal that detects frequency spectrum resource, when the dynamic spectrum resource allocation methods that uses the present invention to exemplify and traditional frequency spectrum distributing method of not using dynamic adaptation, with the analogous diagram of authoring system collision rate;
Figure 14 is among the resource adaptation method embodiment five of the present invention, the flow chart of system when the lease frequency spectrum resource is about to expire;
Figure 15 is among the resource adaptation method embodiment five of the present invention, the flow chart of system when detecting the reproduction of resource authorization system;
Figure 16 is the schematic diagram of resource adaptive device embodiment of the present invention;
Figure 17 is the schematic diagram of resource adaption system embodiment of the present invention.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
601-frequency spectrum sort module; The 603-terminal is selected module; The 605-adaptation module;
701-the Resources list submodule; 703-classification and ordination submodule; 705-judges submodule;
The 707-submodule that sorts; 709-up duration statistic unit;
711-estimates professional duration unit; 803-frequency spectrum lease module; 805-frequency spectrum detection submodule;
The 901-load capacity is measured judge module; The to be switched load capacity computing module of 903-.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Embodiment one
Fig. 1 is the flow chart of resource adaptation method embodiment one of the present invention, and as shown in Figure 1, present embodiment comprises:
Step S101: obtain the characteristic parameter of short-term spectrum resource, execution in step S103;
Step S103: judge whether the current load capacity of communication cell surpasses and set thresholding, be execution in step S105 then, otherwise continue execution in step S103;
Step S105: just at the service feature of the terminal of bearer service, select to be switched terminal, execution in step S107 in the obtaining communication sub-district;
Step S107:, to be switched terminal is fitted to the short-term spectrum resource of mating with its service feature according to the characteristic parameter of short-term spectrum resource.
In the resource adaptation method that present embodiment proposes, consider the coupling of the frequency spectrum resource of terminal loaded service feature and short-term spectrum resource, can guarantee the QoS of terminal bearer service, improved success rate for switching.
Embodiment two
In the present embodiment, under the single communication cell scenario, suppose that communication cell itself has the frequency that extended immobilization is distributed, base station and part terminal support frequency to reshuffle function, and when the communication cell load surpasses under certain thresholding situation, terminal is obtained the detection frequency spectrum resource by the CR technology, or by consulting the lease frequency spectrum resource between network, thereby obtain short-term usable spectrum resource, thereby can alleviate system pressure, replenishment system capacity, realize the dynamic assignment of frequency spectrum resource and the expansion of power system capacity.
Be illustrated as the short-term spectrum resource with detecting frequency spectrum resource with the lease frequency spectrum resource in the present embodiment, its spectrum signature can adopt the statistical nature parameter characterization, and main statistical nature parameter can comprise: availability, up duration and stability.In the above-mentioned parameter:
Availability: represent with A, characterize resource current state whether available (free time).Whether available available as: A=0 representative, the A=1 representative is unavailable, represent state with the different value of A.For the frequency spectrum resource that lease obtains, allowing to use A=0 in the duration, be unsettled owing to detect frequency spectrum resource, therefore, the value that detects frequency spectrum resource A is uncertain.
Up duration: use T
RExpression, the up duration of sign short-term spectrum resource is the lease time for the lease frequency spectrum resource; For detecting frequency spectrum resource, be the statistics up duration under the particular probability, for hereinafter explanation is convenient, the statistics up duration is represented with Δ t.
Stability: represent with S, characterize the continual and steady degree of resource status.For lease frequency spectrum resource, S=P
Transferase 10-0(t, t+T
R)=1; For detecting frequency spectrum resource, stable S is the function of statistics up duration Δ t, can be represented by the two condition Markov process, as shown in Equation (1): S=P
Transferase 10-0(t, t+ Δ t)=1-P
Transferase 10-1(t, t+ Δ t)=1-P{A
T+ Δ t=1|A
t=0} ... (1)
Wherein, A
tBe illustrated in the t availability of frequency spectrum resource constantly, P
Transferase 10-0The implication of (t, t+ Δ t) is continuing the still available probability of frequency in the Δ t time, promptly for identical P
Transferase 10-0(t, t+ Δ t), Δ t large resource stability more is high more.
Detect frequency spectrum resource for certain section, use different statistics up duration Δ t to add up, can obtain different stability.Wherein, stability P
Transferase 10-0Probability is represented, when current state is " 0 " (being that current state is idle or available), the statistics up duration is long more, the easy more appearance of authoring system, state is easy more to be transferred to unavailablely, and state still is that the probability of available (i.e. " 0 ") is just more little, therefore, t is long more for statistics up duration Δ, and stability is more little.For all detection frequency spectrum resources, ask for unified stability value, that is, under identical stability, t is long more for statistics up duration Δ, and the duration of frequency spectrum free time is long more.Because the less stable of detection frequency spectrum resource and uncertain, so relatively be fit to the less demanding type of service of carrying delay sensitive.
Except above-mentioned statistical nature parameter, the short-term spectrum resource can also with resource capacity characterize the maximum traffic bandwidth that can carry.
In various embodiments of the present invention, the short-term spectrum resource comprises: lease frequency spectrum resource and detection frequency spectrum resource.Fig. 2 is the schematic diagram of communication cell frequency spectrum resource classification among the resource adaptation method embodiment two of the present invention.As shown in Figure 2, the frequency spectrum resource in the communication cell comprises:
1. intrinsic long-term frequency spectrum resource, this type of frequency spectrum resource fixed allocation, steady in a long-term available, among Fig. 2, intrinsic long-term frequency spectrum resource has f
11-f
14
2. lease frequency spectrum resource, by the resource of usable spectrum in short-term that dealing lease or network negotiate obtain, this type of frequency spectrum resource dynamic assignment, stable S=1, short-term can be used, and up duration is T
R, among Fig. 2, the lease frequency spectrum resource has f
21-f
23
3. detection frequency spectrum resource, by the usable spectrum resource that frequency spectrum detection obtains, this type of frequency spectrum resource chance formula dynamic assignment, short-term can be used, and as shown in Figure 2, detecting frequency spectrum resource has f
31-f
34, detect the availability of frequency spectrum resource and represent that with A availability is uncertain, as shown in Figure 2, detect frequency spectrum resource f
33A=1, detect frequency spectrum resource f
34A=0; Detect frequency spectrum resource f is arranged
31-f
34The statistics up duration be respectively Δ t
1-Δ t
4, stability is respectively S1-S4.
Fig. 3 is the flow chart of resource adaptation method embodiment two intermediate frequency spectrum tagsorts of the present invention.As shown in Figure 3, present embodiment comprises:
Step S201: flow process begins, execution in step S203;
Step S203: obtain the characteristic parameter of short-term spectrum resource, execution in step S205;
Step S205: the short-term spectrum resource is classified execution in step S207 according to lease frequency spectrum resource and detection frequency spectrum resource;
Step S207: the short-term spectrum resource is sorted execution in step S209 according to up duration;
Step S209: generate short-term spectrum the Resources list.
In the present embodiment, defined the characteristic parameter that characterizes the short-term spectrum resource, proposed the short-term spectrum resource according to the lease frequency spectrum resource with detect frequency spectrum resource and classify, and the technical scheme that sorts according to up duration.
In present embodiment and the subsequent embodiment, can also be according to the characteristic parameter of short-term spectrum resource, generate short-term spectrum the Resources list, carrying out frequency spectrum resource when adaptive, can from short-term spectrum the Resources list, directly obtain the characteristic parameter of short-term spectrum resource.
The spectrum signature sorting technique of present embodiment has overcome the defective that in the prior art short-term availability of short-term spectrum resource is characterized difficulty, adopt statistical method to define to it, help comprehensive statement of short-term spectrum resource, and lay the first stone for frequency spectrum resource and the adaptive of terminal traffic.
Embodiment three
Fig. 4 is for determining the schematic diagram of to be switched load capacity among the resource adaptation method embodiment three of the present invention.As shown in Figure 4, wherein,
T: the overload threshold load capacity, even load capacity surpasses this thresholding, and then system is in overload;
T ': the historical statistics experience is set the thresholding load capacity, and system is in the optimal performance state under this thresholding;
L: the present load amount can characterize by dedicated bandwidth herein;
N:(L-T ') load capacity;
M: changeable load capacity, take all factors into consideration the various information of terminal, comprise that terminal reshuffles information such as ability, translational speed, delay requirement, bandwidth demand, the preferential low to be switched terminal of conduct of delay sensitive requirement of selecting in all terminals.So-called changeable, refer to that this user satisfies the reconfigurable Fundamentals of terminal, the aforesaid in addition factor of taking all factors into consideration comprises that delay sensitive is lower, translational speed waits more slowly;
K: expectation switch load amount, wherein, K=min (N, M).
In the above-mentioned schematic diagram, system is not the ultimate load with self, and promptly T is as the thresholding that switches, but the load capacity when being in the optimum performance state with system, be T ' as handoff threshold, the handoff threshold of choosing like this can make communication system be in optimum Working all the time.System can also take all factors into consideration the ability of reshuffling, translational speed and the service feature of terminal when selecting to be switched load capacity.
In present embodiment and following each embodiment, each parameter all can load capacity characterize, and in the middle of engineering practice, also can adopt number of users to characterize each parameter, and the number of users in the time of can also representing overload threshold as T, L are represented current number of users etc.
The flow chart that Fig. 5 selects and sorts for to be switched terminal among the resource adaptation method embodiment three of the present invention.As shown in Figure 5, present embodiment comprises:
Step S301: flow process begins;
Step S303: load measure;
Step S305: judge whether the current load capacity of system has surpassed the thresholding of setting, and is execution in step S307, otherwise execution in step S303;
Step S307: obtain to be switched load capacity;
Step S309: the ability of reshuffling and the translational speed of obtaining terminal;
Step S311: the service feature that obtains terminal;
Step S313:, select the to be switched terminal of candidate according to the ability of reshuffling and the translational speed of terminal;
Step S315: take all factors into consideration the service feature of to be switched load capacity and terminal, from the to be switched terminal of candidate, select to be switched terminal;
Step S317: to be switched terminal is required to sort according to service delay.
In the present embodiment, considered the ability of reshuffling of terminal, for the terminal of not supporting to reshuffle function, even dynamic assignment frequency spectrum resource can not well utilize; Secondly, also considered the translational speed of terminal, terminal also is not suitable for carrying out reshuffling of resource when translational speed is too high, if switching can cause serious consequences such as call drop by force.
In the present embodiment, will have the most important condition of the terminal of the ability of reshuffling and suitable translational speed as to be switched terminal.In addition, need also to consider whether terminal institute loaded service is fit to switch to short-term spectrum resource and the load capacity switched of needs altogether, therefore, need take all factors into consideration the each side factor, thereby select to be switched terminal.Certainly, also can be only according to the foundation of the part in above-mentioned each factor as the to be switched terminal of selection.The succession of step S307-S309 is not unique, can carry out priority arrangement according to actual needs.
The delay requirement of different service types also is not quite similar, and (for hereinafter explanation is convenient, below uses DL
iExpression type of service DL
iDelay requirement (ms of unit), DL
iThe reflection type of service is to the requirement of frequency spectrum resource stability.After having selected to be switched terminal, it need be required to sort according to service delay, as: with DL
iBig terminal comes forward position.
The beginning that present embodiment uses at new resources, need not to wait for the arrival of new session, it is adaptive that the reconfigurable portable terminal of selecting to carry in original frequency range session carries out resource, and switch to new frequency spectrum resource, thereby can increase handover success rate, make system remain on optimum Working for a long time, original mandate frequency range can be admitted more non-reconfigurable common mobile terminal, increases power system capacity and throughput.
Present embodiment can effectively overcome the defective that lacks the comprehensive statement of service feature in the prior art, can select to be switched terminal according to the ability of reshuffling, according to delay requirement terminal is classified, and sort by professional duration, solved the problem of terminal traffic feature statement difficulty in the prior art, for the adaptive of to be switched terminal and system resource laid a good foundation.
Embodiment four
Must can take all factors into consideration multiple factor when resource is adaptive, these factors comprise: service delay and short-term spectrum stability features be adaptive, estimate professional duration and the short-term spectrum up duration is adaptive, service bandwidth requirement and short-term spectrum resource capacity are adaptive etc.
Carrying out resource when adaptive,, the terminal of bearer service is directed on the dissimilar short-term spectrum resources at first according to different delay requirement select target switchable resources.Definition φ: delay requirement thresholding/frequency stability requirement thresholding (unit: ms), the φ value is adjustable, and concrete numerical value is stipulated by system:
Work as DL
iDuring＜φ, during switching such business is fitted to the lease frequency spectrum resource;
Work as DL
iDuring 〉=φ, during switching such business is fitted to the detection frequency spectrum resource.
Fig. 6 is the adaptive schematic diagram of resource among the resource adaptation method embodiment four of the present invention.As shown in Figure 6, with the professional Y1 of delay requirement less than the delay requirement thresholding, Y2, Y3 are fitted to the lease frequency spectrum resource, and delay requirement is fitted to the detection frequency spectrum resource greater than the professional Y4-Y7 of delay requirement thresholding.
For different types of service, calculate and estimate professional duration T
u, and according to this parameter to be switched terminal is sorted.Determine that the method for estimating professional duration includes but not limited to following two kinds:
1. for some data services that sends continuously, can be according to transmitted data amount, the bandwidth of distribution, thus estimate that its transmission duration obtains T
u
2. for speech class business, can estimate this professional duration that uses, thereby obtain T according to the professional duration that uses of historical statistics
u
In addition, for different business, its service bandwidth requires different, also needs to consider the problem of short-term spectrum resource capacity and service bandwidth coupling when resource is adaptive.
For the terminal of target switchable resource for the lease frequency spectrum resource, professional at first on the estimation duration and required bandwidth are selected to satisfy the lease frequency spectrum resource of leasing duration and bandwidth demand, then initiate frequency spectrum lease and handoff procedure.As shown in Figure 6, professional Y1 is fitted to lease frequency spectrum resource f
22, professional Y2, Y3 are fitted to lease frequency spectrum resource f
21(lease frequency spectrum resource f
22Satisfy the bandwidth of professional Y1 and estimate professional duration; Lease frequency spectrum resource f
21Satisfy the bandwidth of professional Y2 and Y3 and estimate professional duration).
Obtain frequency spectrum resource for detecting, carry non-delay sensitive class business more, as far as possible with T
uLong terminal switches to the long target carrier frequency of statistics up duration Δ t, up to this carrier frequency more service bandwidth of can not reallocating, promptly satisfies formula (2):
Wherein, b
iBe the bandwidth of i terminal bearer service, B
FjJ carrier frequency f for base station configuration
jCapacity, C is the detection frequency spectrum resource carrier frequency number (abundant with respect to amount of switched) of base station configuration.
The adaptive the longest detection frequency spectrum resource f of up duration that puts of long professional Y4-Y6 during as shown in Figure 6, with the expectation business
31, until detecting frequency spectrum resource f
31Bearer service again, and will estimate that the long professional Y7 of professional duration is fitted to up duration vice-minister's detection frequency spectrum resource f
32
Because there is the link of consulting between economic interests or network in frequency spectrum lease process, if but the frequency spectrum resource that has the chance formula to insert generally speaking can be used, and changeable terminal traffic type is to time delay and when insensitive, do not carry out frequency spectrum lease link, and directly use frequency spectrum resource by frequency spectrum detection obtained.
Whole switching flow mainly is divided into three parts:
1. the adaptive handoff procedure of resource that network side was initiated when load capacity surpassed thresholding T ';
2. the handoff procedure that the short-term spectrum resource expires or network side is initiated when unavailable;
3. only on intrinsic long-term frequency spectrum resource, carry out and admit newly arrived session.
The adaptive flow chart of resource that Fig. 7 initiates for network side among the resource adaptation method embodiment four of the present invention.Reference example two and embodiment three, present embodiment comprises:
Step S401: load measure;
Step S403: judge whether eigenfrequency spectrum resource bearing capacity surpasses thresholding T ' in the communication cell, is, then execution in step S405; Not, then execution in step S401 proceeds load measure;
Step S405: network side is according to the present load amount and set thresholding, determines expectation switch load amount K, according to the method among the embodiment two, selects F the to be switched terminal of carry load amount K, execution in step S407;
Step S407: judge whether the bearer service type has the part delay requirement less than setting thresholding, i.e. DL in F the to be switched terminal
i＜φ is, then execution in step S409; Deny, then execution in step S417;
Step S409: judge to rent in the frequency spectrum resource tabulation whether enough usable spectrum resources are arranged, be, then execution in step S411; Deny, then execution in step S413;
Step S411: select business that the high terminal of frequency spectrum stability requirement is switched to lease frequency spectrum resource, execution in step S421;
Step S413: network side is initiated frequency spectrum lease process, execution in step S415;
Step S415: network side obtains the lease frequency spectrum resource that short-term can be used, and carries out the base station and reshuffles execution in step S417;
Step S417: network side is selected preceding C high frequency spectrum resource group of priority from detect the frequency spectrum resource aggregate list, carries out the base station and reshuffles execution in step S419;
Step S419: network side initiates that alien frequencies switches in the communication cell, and it is adaptive that F to be switched terminal carried out the target detection frequency spectrum, execution in step S421;
Step S421: upgrade the frequency spectrum resource tabulation, execution in step S423;
Step S423: flow process finishes.
After step S423 flow process finished, system can restart, and comes back to step S401, carries out load measure.
Present embodiment is described in detail the matching process of the characteristic parameter of the service feature of terminal and short-term spectrum resource on the basis of embodiment two and embodiment three.Fig. 8-Figure 15 is the analog simulation result of the various embodiments described above of the present invention.
The scene of Fig. 8-Figure 15 analog simulation once is described below: single communication cell scenario, the user terminal in the communication cell comprise two kinds at reconfigurable terminal and not reconfigurable terminal, and the frequency spectrum resource amount that detects acquisition is much larger than user's request.Table 1 is the characteristic parameter table of all kinds of frequency spectrum resources, and table 2 is the service feature table of terminal.Table 1 and table 2 are each parameter that adopts in Fig. 8-Figure 15 analog simulation scene.
The characteristic parameter table of all kinds of frequency spectrum resources of table 1
| Title | Capacity (Kbps) | Duration (minute) |
| Fixed frequency spectrum | ??1000 | Unrestrictedly |
| The |
100/ | ??20 |
| Detect frequency spectrum | 50-100/ | ??S＝e -aΔt |
In table 1:
1) a is a random number, and each detects frequency spectrum all a S (Δ t) curve, and the Δ t when this emulation is got S=0.8 when coupling is as estimating professional duration;
2) according to the historical statistics experience, the load capacity when systematic function reaches optimum state is 1000Kbps, and therefore setting thresholding is 1000Kbps, and the carry load amount promptly triggers handoff procedure above this thresholding on the fixed frequency spectrum resource.
The service feature table of table 2 terminal
| Type | Speed (kbps) | Time delay sensitivity (ms) | Account for total number of users ratio |
| One class business | ??64 | ??50 | ??0.1 |
| Two class business | ??16 | ??50 | ??0.4 |
| Three class business | ??16/32/64 | ??50-500 | ??0.4 |
| Four class business | ??16/32/64 | ??50-500 | ??0.1 |
Wherein: class business is the time delay sensitivity height, and the business that speed is high is as mobile TV; Two classes business is the time delay sensitivity height, and the business that speed is low is as speech business; Three classes business is the low business of time delay sensitivity, as data service; Four classes business is that time delay sensitivity is low, and the business that professional duration is minimum is as webpage.
According to the scene of foregoing description, following Fig. 8-Figure 15 is for using the result that Matlab carries out emulation.Fig. 8 analogous diagram of throughput of system when tradition spectrum allocation may and dynamic frequency spectrum deployment when arriving 300 users among the resource adaptation method embodiment four of the present invention 1 hour.As shown in Figure 8, when customer volume is big, tradition frequency spectrum distributing method throughput on intrinsic long-term frequency spectrum resource reaches the upper limit, and adopt the dynamic frequency spectrum deployment method to make full use of the short-term spectrum resource, system load is dynamically shared on lease and the detection frequency spectrum resource, make throughput of system obviously increase.
Fig. 9 arrived 300 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=200ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput.Figure 10 arrived 300 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=80ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput.The time delay thresholding of setting as can be seen from Fig. 9 and Figure 10 is to being fitted to the lease frequency spectrum resource and detecting the influence of the traffic carrying capacity of frequency spectrum resource: when the delay requirement thresholding step-down set, the traffic carrying capacity that is assigned to the lease frequency spectrum resource obviously becomes many, diminish and be assigned to the traffic carrying capacity that detects frequency spectrum resource, and the load capacity on the intrinsic long-term frequency spectrum resource is also less relatively, can there be more capacity to admit non-reconfigurable terminal, therefore, from the correctness of Fig. 9-Figure 10 also provable resource adaptation method of the present invention.
Figure 11 arrived 150 users among the resource adaptation method embodiment four of the present invention 1 hour, dynamic frequency spectrum deployment, and during φ=80ms, total throughout, fixed frequency spectrum throughput, lease frequency spectrum throughput and detect the emulation schematic diagram of frequency spectrum throughput.Can find out that by Figure 11 contrast as can be known with Figure 10, when the user was fewer, needed lease frequency spectrum resource tailed off,, need the frequency spectrum resource of lease also to increase thereupon when user's quantitative change is big.
Among Figure 12 resource adaptation method embodiment four of the present invention, φ=80ms switches to the terminal that detects frequency spectrum resource, when the dynamic spectrum resource allocation methods that uses the present invention to exemplify and traditional frequency spectrum distributing method of not using dynamic adaptation, and the analogous diagram of switching rate.Switching rate is defined as total switching times of all users divided by total number of users, promptly average every user's switching times.For being fitted to the terminal that detects frequency spectrum resource, use the switching rate of adaptation method little more a lot of than the terminal switching rate that does not use adaptation method.
Figure 13 is among the resource adaptation method embodiment four of the present invention, φ=80ms, switch to the terminal that detects frequency spectrum resource, when the dynamic spectrum resource allocation methods that uses the present invention to exemplify and traditional frequency spectrum distributing method of not using dynamic adaptation, with the analogous diagram of authoring system collision rate.Collision refers to carry out in the process authoring system user's unexpected appearance on detecting frequency spectrum resource; Collision rate is defined as the ratio of total detection spectrum number of detection spectrum number that collision occurs and use.As can be known from Fig. 13, for being fitted to the terminal that detects frequency spectrum resource, carry out adaptive method by the statistics up duration of estimating professional duration and frequency spectrum resource, itself and authoring system collision rate are starkly lower than the collision rate of traditional spectrum allocation may.
Present embodiment has carried out refinement to the matching process of the characteristic parameter of the service feature of terminal and short-term spectrum resource.Can find out by simulation result, present embodiment can be eliminated the overload phenomenon effectively, increase throughput of system, allow more session to insert (comprising reconfigurable terminal carrying session and not reconfigurable terminal carrying session), reduce blocking rate, guarantee professional QoS, improve handover success rate and user's satisfaction, and reduce the switching rate and the collision rate of system simultaneously.
Embodiment five
For the lease frequency spectrum resource with detect frequency spectrum resource, in taking process, all can run into inevitably and expire or disabled situation, in this case, just need network side to initiate to switch, uncompleted business is switched in the middle of other frequency spectrum resources.
Figure 14 is according to the present invention among the resource adaptation method embodiment five, the flow chart of system when the lease frequency spectrum resource is about to expire.This flow chart comprises:
Step S501: when short-term can be about to expire with the lease frequency spectrum resource after testing, execution in step S503;
Step S503: judge whether bearer service does not finish as yet, is, the expression bearer service is also continuing, then execution in step S505; , the expression bearer service does not finish execution in step S515;
Step S505: judge in the tabulation of short-term lease frequency spectrum resource whether other available resources are arranged, be, then execution in step S507; Deny, then execution in step S509;
Step S507: can be with other still undue short-terms that unclosed session still switches in the tabulation of lease frequency spectrum resource with on the lease frequency spectrum resource, execution in step S515;
Step S509: judge in the intrinsic long run frequency tabulation whether enough available resources are arranged, be, then execution in step S511; Deny, then execution in step S513;
Step S511: unclosed session is still switched back on the intrinsic long-term frequency spectrum resource execution in step S515;
Step S513: network side is initiated frequency spectrum lease process, execution in step S515;
Step S515: upgrade the resource collection tabulation, reshuffle the base station.
Step S515 comes back to step S501 in this flow process after upgrading the resource collection tabulation, and whether continue to detect has the short-term spectrum resource to use duration to be about to expire, and promptly becomes unavailable resource near the phase.
Figure 15 is according to the present invention among the resource adaptation method embodiment five, the flow chart when detecting the resource authorization system and reproducing.Present embodiment comprises:
Step S551: detect the frequency spectrum resource frequency range, reproduce execution in step S553 if detect the frequency spectrum authoring system that is inserted;
Step S553: judge whether bearer service does not finish as yet, is, show that bearer service is also continuing, then execution in step S555; , do not show that bearer service finishes, then execution in step S557;
Step S555: terminal is vacated channel immediately, and network side switches on other usable spectrum resources of base station configuration execution in step S557 with the session of this terminal;
Step S557: upgrade the resource collection tabulation, reshuffle the base station.
This process step S557 after reshuffle the base station, comes back to step S551 upgrading the resource collection tabulation, has judged whether that the frequency spectrum authoring system reproduces.
In the present embodiment, whether the short-term spectrum resource that the detection of system cycle is being used expires or is unavailable, and when it expires or be unavailable, initiates the resource adapting operation, with other professional adaptive usable spectrum resources of above-mentioned short-term spectrum resource bearing.Present embodiment is further perfect terminal traffic and network spectrum resource adaptive improved adaptive integrality and the exploitativeness of resource.
Embodiment six
Figure 16 is the schematic diagram of resource adaptive device embodiment of the present invention.As shown in figure 16, this device comprises: frequency spectrum sort module 601 is used to obtain the characteristic parameter of short-term spectrum resource; Terminal is selected module 603, just is used in the obtaining communication sub-district service feature in the terminal of bearer service, selects to be switched terminal; Adaptation module 605 selects module to link to each other with spectrum signature sort module and terminal, is used for to be switched terminal is fitted to the available short-term spectrum resource that is complementary with its service feature.
The resource adaptive device can be positioned in base station controller (Base StationController is called for short BSC) or the radio network controller (Radio Network Controller is called for short RNC) in the present embodiment.Device in the present embodiment can be classified short-term spectrum resource and to be switched terminal or sort, and to be switched terminal is fitted to the short-term spectrum resource that is complementary with its service feature.The device of present embodiment can improve success rate for switching, guarantees the QoS of terminal bearer service, has whole beneficial effects of said method embodiment one, no longer identical content is repeated in this description herein.
Embodiment seven
Present embodiment carries out refinement to each functional module on the basis of embodiment six.As shown in figure 16, frequency spectrum sort module 601 can further include: up duration statistic unit 709 is used to obtain the statistics up duration of detection frequency spectrum resource in specific stability requirement; The Resources list submodule 701 be used for generating the frequency spectrum resource tabulation according to the characteristic parameter of frequency spectrum resource, and tabulation is upgraded to frequency spectrum resource; Classification and ordination submodule 703 is used for the frequency spectrum resource of above-mentioned usable spectrum the Resources list is classified according to lease frequency spectrum resource and detection frequency spectrum resource, and sorts according to up duration.
Terminal selects module 603 may further include: judge submodule 705, be used for selecting selecting the to be switched terminal of candidate according to reshuffling ability and translational speed; Ordering submodule 707 is used for selecting to be switched terminal according to the service feature and the to be switched load capacity of the to be switched terminal of candidate, and to be switched terminal is required to sort according to service delay.
Wherein, the ordering submodule can also comprise: estimate professional duration unit 711, be used to estimate to be switched terminal institute's lasting time of bearer service.
Present embodiment has carried out refinement with each functional module among the embodiment six, has whole beneficial effects of embodiment six, no longer identical content is carried out repeat specification herein.In addition, each functional module of present embodiment with concrete, more helps the enforcement of technical scheme more in detail.
Embodiment eight
Figure 17 is the schematic diagram of resource adaption system embodiment of the present invention.As shown in figure 17, the resource adaptive device in embodiment six, the resource adaption system also comprises: frequency spectrum lease module 803 is used to obtain the characteristic parameter of renting frequency spectrum resource and is sent to the frequency spectrum sort module 601 of resource adaptive device; Frequency spectrum detection module 805 is used to obtain characteristic parameter that detects frequency spectrum resource and the frequency spectrum sort module 601 that is sent to the resource adaptive device.
Present embodiment intermediate frequency spectrum lease module 803 and frequency spectrum detection module 805 can be positioned at base station controller (Base Station Controller is called for short BSC) or radio network controller (RadioNetwork Controller is called for short RNC).Frequency spectrum lease module 803 links to each other with frequency spectrum sort module 601 with frequency spectrum detection module 805, is used to obtain and send the characteristic parameter of frequency spectrum resource, creates conditions for carrying out the adaptive of frequency spectrum resource and terminal traffic.
The resource adaption system that present embodiment provides, the characteristic parameter by obtaining the short-term spectrum resource and the service feature of to be switched terminal, to be switched terminal is fitted to the available short-term spectrum resource that service feature is complementary, concrete beneficial effect can be referring to the related description of said method embodiment, at this, no longer identical or content corresponding are repeated in this description.
Embodiment nine
As shown in figure 17, the resource adaption system also comprises: load capacity is measured judge module 901, is used to measure the present load amount of communication cell, and when the present load amount surpasses the setting thresholding, initiates the resource distribution action to the resource adaptive device; To be switched load capacity computing module 903 is used for according to the present load amount, sets thresholding, the ability of reshuffling of terminal, the translational speed of terminal, and/or the service feature of terminal calculates to be switched traffic carrying capacity.
Native system embodiment has increased load capacity and has measured judge module and to be switched load capacity computing module, can be when communication cell present load amount surpasses the setting thresholding, automatically open the frequency spectrum adaptation procedure, and according to a plurality of factors, take all factors into consideration the service switchover amount, specifically can be referring to the related description of said method embodiment.The setting thresholding of present embodiment also has the advantage that can make system be in optimum Working all the time, helps whole resource adaption system optimization in Properties, has strengthened its exploitativeness.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc, CD, switch, base station equipment.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. a resource adaptation method is characterized in that, comprising:
Obtain the characteristic parameter of short-term spectrum resource;
When communication cell present load amount surpass to be set thresholding, just obtain in the described communication cell service feature in the terminal of bearer service, select to be switched terminal;
According to the characteristic parameter of described short-term spectrum resource, described to be switched terminal is fitted to the short-term spectrum resource that the service feature with described to be switched terminal is complementary.
2. resource adaptation method according to claim 1 is characterized in that, described short-term spectrum resource comprises: lease frequency spectrum resource and detection frequency spectrum resource.
3. resource adaptation method according to claim 2, it is characterized in that, described characteristic parameter according to described short-term spectrum resource, the step that described to be switched terminal is fitted to the short-term spectrum resource that the service feature with described to be switched terminal is complementary specifically comprises:
Set service delay and require thresholding;
When the service delay requirement of described to be switched terminal requires thresholding greater than described service delay, described to be switched terminal is fitted to the detection frequency spectrum resource, otherwise, described to be switched terminal is fitted to the lease frequency spectrum resource.
4. resource adaptation method according to claim 3 is characterized in that, describedly also comprises after described to be switched terminal is fitted to the step that detects frequency spectrum resource:
In proper order described to be switched terminal is fitted to the longest detection frequency spectrum resource of up duration according to the professional duration of the expectation of described to be switched terminal;
When the longest detection frequency spectrum resource full load of described up duration, the to be switched terminal of residue is fitted in proper order up duration vice-minister's detection frequency spectrum resource by the professional duration of expectation;
Reshuffle the execution base station.
5. resource adaptation method according to claim 3 is characterized in that, described with described to be switched terminal be fitted to the lease frequency spectrum resource step after also comprise:
Select and the professional duration of expectation of described to be switched terminal and/or the lease frequency spectrum resource that service bandwidth is complementary;
Obtain the described lease frequency spectrum resource that is complementary;
Described to be switched terminal is fitted to the described lease frequency spectrum resource that is complementary;
Reshuffle the execution base station.
6. resource adaptation method according to claim 3 is characterized in that, also comprises:
Detect described short-term spectrum resource and be about to when unavailable, other frequency spectrum resource of selecting the service feature with described short-term spectrum resource bearing business to be complementary is fitted to described other frequency spectrum resource with the business of described short-term spectrum resource bearing.
7. according to each described resource adaptation method among the claim 1-6, it is characterized in that the characteristic parameter that obtains the short-term spectrum resource also comprises afterwards:
Described short-term spectrum resource is classified according to described characteristic parameter and sort, generate short-term spectrum the Resources list;
After described to be switched terminal is fitted to the short-term spectrum resource that the service feature with described to be switched terminal is complementary, upgrade described frequency spectrum resource tabulation.
8. resource adaptation method according to claim 7 is characterized in that, the described step of the short-term spectrum resource being classified according to characteristic parameter and sorting specifically comprises:
Described short-term spectrum resource is classified according to lease frequency spectrum resource and detection frequency spectrum resource;
Described short-term spectrum resource is sorted according to up duration.
9. resource adaptation method according to claim 8 is characterized in that:
The up duration of described detection frequency spectrum resource is the statistics up duration under the specific stability requirement.
10. according to each described resource adaptation method among the claim 1-6, it is characterized in that: the load capacity when described setting thresholding is system's optimum performance.
11., it is characterized in that the step of the to be switched terminal of described selection specifically comprises according to each described resource adaptation method among the claim 1-6:
According to one in the service feature of described present load amount, the translational speed of setting thresholding, the ability of reshuffling of described terminal, described terminal and described terminal or multinomially obtain to be switched load capacity;
According to the ability of reshuffling of described terminal, the translational speed of terminal, the service feature of terminal and or the described to be switched terminal of multinomial selection in the described to be switched load capacity.
12. a resource adaptive device is characterized in that, comprising:
The frequency spectrum sort module is used to obtain the characteristic parameter of short-term spectrum resource;
Terminal is selected module, just is used in the obtaining communication sub-district service feature in the terminal of bearer service, selects to be switched terminal;
Adaptation module selects module to link to each other with described frequency spectrum sort module and terminal, is used for described to be switched terminal is fitted to the short-term spectrum resource that is complementary with described service feature.
13. resource adaptive device according to claim 12 is characterized in that, described frequency spectrum sort module comprises:
The up duration statistic unit is used to obtain the statistics up duration of detection frequency spectrum resource under specific stability requirement.
14. resource adaptive device according to claim 12 is characterized in that, described frequency spectrum sort module also comprises:
The classification and ordination submodule is used for frequency spectrum resource is classified according to lease frequency spectrum resource and detection frequency spectrum resource, and sorts according to up duration;
The Resources list submodule is used for upgrading according to the characteristic parameter generation frequency spectrum resource tabulation of described frequency spectrum resource and to described frequency spectrum resource tabulation.
15., it is characterized in that described terminal selects module further to comprise according to each described resource adaptive device among the claim 12-14:
Judge submodule, be used for selecting the to be switched terminal of candidate according to the ability of reshuffling and/or the translational speed of described terminal;
The ordering submodule be used for the service feature according to the to be switched terminal of described candidate, and/or to be switched load capacity is selected to be switched terminal from the to be switched terminal of described candidate, and described to be switched terminal is sorted according to the service delay requirement.
16. resource adaptive device according to claim 15 is characterized in that, described ordering submodule further comprises:
Estimate professional duration unit, be used to estimate the duration of described to be switched terminal institute bearer service.
17. a resource adaption system is characterized in that, comprises each described resource adaptive device among the claim 12-14, also comprises:
Frequency spectrum lease module, the frequency spectrum sort module that is used to obtain the characteristic parameter of lease frequency spectrum resource and is sent to described resource adaptive device;
The frequency spectrum detection module is used to obtain characteristic parameter that detects frequency spectrum resource and the frequency spectrum sort module that is sent to described resource adaptive device.
18. resource adaption system according to claim 17 is characterized in that, also comprises:
Load capacity is measured judge module, is used to measure the present load amount of communication cell, when described present load amount surpasses described setting thresholding, initiates the adaptive request of resource to described resource adaptive device;
To be switched load capacity computing module is used for according to described present load amount, sets thresholding, the ability of reshuffling of terminal, the translational speed of terminal, and/or the service feature of terminal calculates to be switched traffic carrying capacity.
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