CN102547718A - Discrete spectrum aggregating method based on preferential maximum space - Google Patents
Discrete spectrum aggregating method based on preferential maximum space Download PDFInfo
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- CN102547718A CN102547718A CN201210018160XA CN201210018160A CN102547718A CN 102547718 A CN102547718 A CN 102547718A CN 201210018160X A CN201210018160X A CN 201210018160XA CN 201210018160 A CN201210018160 A CN 201210018160A CN 102547718 A CN102547718 A CN 102547718A
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Abstract
The invention discloses a discrete spectrum aggregating method based on a preferential maximum space. The discrete spectrum aggregating method comprises the following steps: 1) By sensing a working spectrum, usable spectrum status of the spectrum is obtained; 2) sequent usable frequency bands on the spectrum are marked, and a usable frequency band with the longest length is obtained; 3) the number of the frequency bands used in the data sent by a user is calculated, and a user requiring the largest number of the frequency bands is acquired; 4) the user requiring the largest number of the frequency bands preferentially uses the usable frequency band with the longest length; 5) and the user requiring the largest number of the frequency bands and the usable frequency band with the longest length are upgraded, and then the step 4) is circularly carried out till the number of the frequency bands is zero or all the usable frequency bands can not meet the service demand of a user requiring the littlest number of the frequency bands. According to the invention, the guard interval overhead of the frequency bands is reduced, so that the system spectrum utilization efficiency is improved.
Description
Technical field
The present invention relates to the cognitive radio technology field, relate in particular to a kind of based on the preferential discrete spectrum polymerization of maximum space.
Background technology
Wireless frequency spectrum is a kind of extremely precious resource, and along with the high speed development and the increase of people to the wireless traffic demand of wireless communication technology, the rare problem of frequency spectrum resource is more and more serious, shows that the availability of frequency spectrum of current mandate frequency spectrum is very low and study.Cognitive radio is a kind ofly to carry out the technology that dynamic frequency spectrum resource distributes then through perceived spectral, and its target is to realize the recycling of frequency spectrum resource and share from various dimensions such as time, space and frequencies, thereby has greatly improved spectrum utilization efficiency.
Under the practical communication condition, usable spectrum is discontinuous often, i.e. the discrete spectrum condition.For example; Electric power 230MHz wireless communications mode is called for short 230 private networks; Promptly adopt data radio station, the special-purpose duplexing frequency of 15 couple and the electric power private wireless communication systems of 10 pairs of single power frequency point structures in the 230MHz band limits of national radio committee electric load control approval.
There are not [1991] No. 5 files of pipe according to state; " with the frequency range of 223.025～235.000MHz; wherein 229.0～235.0MHz frequency range is used for radio astronomy service in the Beijing area, and other business must not produce harmful interference to it as professional use such as remote measurement, remote control, transfer of data." band separation is 25kHz, necessary bandwidth is less than 16Khz, and therefore, the protection of between working frequency points, having reserved 9kHz at least is at interval.Ministries and commissions such as this part frequency band available power, oil, army, meteorology, light industry and ham radio etc. also can use this frequency band.
According to this situation, on discrete spectrum (like 230MHz electric power frequency range), can adopt the mode of OFDM, a plurality of subcarriers of design on the frequency band of a 25kHz get up to carry than multi-subcarrier with the frequency band polymerization of a plurality of free time, communicate.Need to prove that a same time of frequency band is used by a user only.In addition, described herein " frequency range " be relevant specification of country property document definition, distribute to a bit of frequency that use at a terminal according to the frequency division mode." frequency band " described herein by after carrying out spectrum aggregating, one or more band frequency that can use frequency range to form continuously.
For compatible original system, need between different frequency bands, reserve protection at interval.This protection gap length meets relevant criterion and requirement, does not have [1991] No. 5 documentation requirements of pipe like state.Fig. 1 has provided frequency range, has protected the relation of interval, subcarrier.User 1,2,3 can use different frequency bands to carry out OFDM respectively, and therefore, different polymerizations exists at interval what problem of quantity of protection, has directly had influence on the frequency spectrum service efficiency.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve is: provide a kind of based on the preferential discrete spectrum polymerization of maximum space, to reduce the protection interval expense between frequency range, improve the system spectrum utilization ratio.
(2) technical scheme
For addressing the above problem, the invention provides a kind ofly based on the preferential discrete spectrum polymerization of maximum space, may further comprise the steps:
S1:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
S2: but continuous service band on the frequency spectrum is identified, but obtain the longest service band of frequency band length;
S3: calculate the user and send the frequency range number that data need, obtain the maximum user of required frequency range number;
S4: but if the frequency range number of all service bands can't satisfy the maximum user's of said required frequency range number business demand; Then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment; But select the bigger user of next required frequency range number to replace the maximum user of said required frequency range number, forward step S5 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band of said frequency band length:
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs more than or equal to the maximum user of said required frequency range number; But corresponding frequency range is designated and is used in then that said frequency band length is the long service band, but and recomputate the length of this service band;
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs less than the maximum user of said required frequency range number; But the service band of then said frequency band length being grown most is designated and is used; But, recomputate the maximum remaining required frequency range number of user of said required frequency range number with the length zero setting of this service band;
S5: but upgrade the maximum user of the required frequency range number service band the longest with frequency band length, forward step S4 to, but up to required frequency range number be 0 or all service bands can't satisfy the user's of required frequency range number minimum business demand.
Preferably, said frequency spectrum upstate includes but not limited to the whether transmission rate that needs to the signal to noise ratio and the user of target BS or gateway of free time, idle probability, average free time length, user of frequency band.
Preferably, single frequency band can only be used by a user simultaneously.
Preferably, during initial phase, establish frequency spectrums of operation and be divided into N sequential frequency band, supply M user to use respectively, said discrete spectrum polymerization specifically comprises following steps:
S101:, obtain the user mode of N sequential frequency band on the frequency spectrum through perception to frequency spectrums of operation;
S102:, set up frequency range and use tabulation { AV according to the frequency spectrum operating position
iThe sign frequency range whether can use, wherein i ∈ [1, N] is the frequency range identifier number;
S103: but to continuous service band FS on the frequency spectrum
k(k>=1) identifies, but obtains the longest service band Max (FS of frequency band length
k);
S104: calculate the frequency range that user under the continuous situation of frequency band sends data and need and count Demand
j, wherein j ∈ [1, M] is a Customs Assigned Number, obtains the maximum user of required frequency range number;
S105: but if all service band FS
kThe frequency range number can't satisfy the maximum user's of said required frequency range number business demand, then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment, forward step S106 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand more than or equal to the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand less than the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, the length of this frequency band is changed to zero, and recomputates the maximum remaining required frequency range number of user of said required frequency range number;
S106: the frequency range that the user of renewal sends data to be needed is counted Demand
jBut with continuous service band FS on the frequency spectrum
k, forward rapid S105 to, be 0 up to required frequency range number, but or all service bands can't satisfy the minimum user's of required frequency range number business demand.
Preferably, when having new service needed to use frequency spectrum the operation phase in system, said discrete spectrum polymerization specifically comprises following steps:
S201:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
S202: but to continuous service band FS on the frequency spectrum
kIdentify, but obtain the longest service band Max (FS of frequency band length
k);
S203: the frequency range that the calculating user sends data to be needed is counted Demand
j
S204: but the user uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand more than or equal to the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand less than the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, the length of this frequency band is changed to zero, and recomputates the remaining required frequency range of user and count Demand
j
S205: the renewal user sends professional required frequency range and counts Demand
j, forward step S204 to, but up to the user send professional required frequency range number be 0 or all service bands can't satisfy user's business demand.
(3) beneficial effect
The present invention according to the required frequency range number of subscriber data traffic what, select idle frequency spectrum.The user priority that demand frequency range number is maximum uses the maximum continuous idle frequency spectrum, owing to reduced the protection interval expense between frequency range, thus improved the system spectrum utilization ratio.
Description of drawings
Fig. 1 is frequency range, the sketch map that concerns of protecting interval, subcarrier;
Fig. 2 is the flow chart of steps according to the embodiment of the invention one discrete spectrum polymerization;
Fig. 3 is the flow chart of steps of discrete spectrum polymerization during according to the embodiment of the invention two initial phases;
Fig. 4 is the flow chart of steps according to the embodiment of the invention three discrete spectrum polymerization when having new service needed to use frequency spectrum.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated as follows.
Embodiment one:
As shown in Figure 2, present embodiment has been put down in writing and a kind ofly it is characterized in that based on the preferential discrete spectrum polymerization of maximum space, may further comprise the steps:
S1:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
Said frequency spectrum upstate includes but not limited to the whether transmission rate that needs to the signal to noise ratio and the user of target BS or gateway of free time, idle probability, average free time length, user of frequency band;
S2: but continuous service band on the frequency spectrum is identified, but obtain the longest service band of frequency band length;
S3: calculate the user and send the frequency range number that data need, obtain the maximum user of required frequency range number;
S4: but if the frequency range number of all service bands can't satisfy the maximum user's of said required frequency range number business demand; Then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment; But select the bigger user of next required frequency range number to replace the maximum user of said required frequency range number, forward step S5 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band of said frequency band length:
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs more than or equal to the maximum user of said required frequency range number; But corresponding frequency range is designated and is used in then that said frequency band length is the long service band, but and recomputate the length of this service band;
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs less than the maximum user of said required frequency range number; But the service band of then said frequency band length being grown most is designated and is used; But, recomputate the maximum remaining required frequency range number of user of said required frequency range number with the length zero setting of this service band;
S5: but upgrade the maximum user of the required frequency range number service band the longest with frequency band length, forward step S4 to, but up to required frequency range number be 0 or all service bands can't satisfy the user's of required frequency range number minimum business demand.
If but all service bands can't satisfy the minimum user's of required frequency range number business demand, then expression distributes failure, and current network can't be carried unallocated business; If required frequency range number is 0, represent that then all bandwidth requirements have all assigned.
Single frequency band can only be used by a user simultaneously.
Embodiment two:
As shown in Figure 3, during initial phase, establish frequency spectrums of operation and be divided into N sequential frequency band, supply M user to use respectively, the discrete spectrum polymerization of present embodiment record specifically comprises following steps:
S101:, obtain the user mode of N sequential frequency band on the frequency spectrum through perception to frequency spectrums of operation;
S102:, set up frequency range and use tabulation { AV according to the frequency spectrum operating position
iThe sign frequency range whether can use, wherein i ∈ [1, N] is the frequency range identifier number;
S103: but to continuous service band FS on the frequency spectrum
k(k>=1) identifies, but obtains the longest service band Max (FS of frequency band length
k);
S104: calculate the frequency range that user under the continuous situation of frequency band sends data and need and count Demand
j, wherein j ∈ [1, M] is a Customs Assigned Number, obtains the maximum user of required frequency range number;
S105: but if all service band FS
kThe frequency range number can't satisfy the maximum user's of said required frequency range number business demand; Then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment; But select the bigger user of next required frequency range number to replace the maximum user of said required frequency range number, forward step S106 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand more than or equal to the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand less than the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, the length of this frequency band is changed to zero, and recomputates the maximum remaining required frequency range number of user of said required frequency range number;
S106: the frequency range that the user of renewal sends data to be needed is counted Demand
jBut with continuous service band FS on the frequency spectrum
k, forward rapid S105 to, but up to required frequency range number be 0 or all service bands can't satisfy the minimum user's of required frequency range number business demand.
If but all service bands can't satisfy the minimum user's of required frequency range number business demand, then expression distributes failure, and current network can't be carried unallocated business; If required frequency range number is 0, represent that then all bandwidth requirements have all assigned.
Embodiment three:
As shown in Figure 4, when having new service needed to use frequency spectrum the operation phase in system, the discrete spectrum polymerization of present embodiment record specifically comprises following steps:
S201:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
S202: but to continuous service band FS on the frequency spectrum
kIdentify, but obtain the longest service band Max (FS of frequency band length
k);
S203: the frequency range that the calculating user sends data to be needed is counted Demand
j
S204: but the user uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand more than or equal to the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand less than the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, the length of this frequency band is changed to zero, and recomputates the remaining required frequency range of user and count Demand
j
S205: the renewal user sends professional required frequency range and counts Demand
j, forward step S204 to, but up to the user send professional required frequency range number be 0 or all service bands can't satisfy user's business demand.
If but all service bands can't satisfy user's business demand, then expression distributes failure, and current network can't be carried unallocated business; If required frequency range number is 0, represent that then all bandwidth requirements have all assigned.
The present invention has been owing to reduced the protection expense at interval between frequency range, thereby improved the system spectrum utilization ratio.
Above execution mode only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (5)
1. one kind based on the preferential discrete spectrum polymerization of maximum space, it is characterized in that, may further comprise the steps:
S1:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
S2: but continuous service band on the frequency spectrum is identified, but obtain the longest service band of frequency band length;
S3: calculate the user and send the frequency range number that data need, obtain the maximum user of required frequency range number;
S4: but if the frequency range number of all service bands can't satisfy the maximum user's of said required frequency range number business demand; Then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment; But select the bigger user of next required frequency range number to replace the maximum user of said required frequency range number, forward step S5 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band of said frequency band length:
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs more than or equal to the maximum user of said required frequency range number; But corresponding frequency range is designated and is used in then that said frequency band length is the long service band, but and recomputate the length of this service band;
But the frequency range number that the frequency range number of the service band the longest as if said frequency band length needs less than the maximum user of said required frequency range number; But the service band of then said frequency band length being grown most is designated and is used; But, recomputate the maximum remaining required frequency range number of user of said required frequency range number with the length zero setting of this service band;
S5: but upgrade the maximum user of the required frequency range number service band the longest with frequency band length, forward step S4 to, but up to required frequency range number be 0 or all service bands can't satisfy the user's of required frequency range number minimum business demand.
2. discrete spectrum polymerization as claimed in claim 1; It is characterized in that said frequency spectrum upstate includes but not limited to the whether transmission rate that needs to the signal to noise ratio and the user of target BS or gateway of free time, idle probability, average free time length, user of frequency band.
3. discrete spectrum polymerization as claimed in claim 1 is characterized in that, single frequency band can only be used by a user simultaneously.
4. discrete spectrum polymerization as claimed in claim 1 is characterized in that, during initial phase, establishes frequency spectrums of operation and is divided into N sequential frequency band, supplies M user to use respectively, and said discrete spectrum polymerization specifically comprises following steps:
S101:, obtain the user mode of N sequential frequency band on the frequency spectrum through perception to frequency spectrums of operation;
S102:, set up frequency range and use tabulation { AV according to the frequency spectrum operating position
iThe sign frequency range whether can use, wherein i ∈ [1, N] is the frequency range identifier number;
S103: but to continuous service band FS on the frequency spectrum
k(k>=1) identifies, but obtains the longest service band Max (FS of frequency band length
k);
S104: calculate the frequency range that user under the continuous situation of frequency band sends data and need and count Demand
j, wherein j ∈ [1, M] is a Customs Assigned Number, obtains the maximum user of required frequency range number;
S105: but if all service band FS
kThe frequency range number can't satisfy the maximum user's of said required frequency range number business demand; Then no longer the maximum customer service of this required frequency range number is carried out bandwidth assignment; But select the bigger user of next required frequency range number to replace the maximum user of said required frequency range number, forward step S106 to;
Otherwise: but the maximum user priority of said required frequency range number uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand more than or equal to the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Max (Demand less than the maximum required frequency range of user of said required frequency range number
i), then use tabulation { AV at frequency band
iIn the sign corresponding frequency band used by the maximum user of said required frequency range number, the length of this frequency band is changed to zero, and recomputates the maximum remaining required frequency range number of user of said required frequency range number;
S106: the frequency range that the user of renewal sends data to be needed is counted Demand
jBut with continuous service band FS on the frequency spectrum
k, forward rapid S105 to, but up to required frequency range number be 0 or all service bands can't satisfy the minimum user's of required frequency range number business demand.
5. discrete spectrum polymerization as claimed in claim 1 is characterized in that, when having new service needed to use frequency spectrum the operation phase in system, said discrete spectrum polymerization specifically comprises following steps:
S201:, obtain the frequency spectrum upstate through perception to frequency spectrums of operation;
S202: but to continuous service band FS on the frequency spectrum
kIdentify, but obtain the longest service band Max (FS of frequency band length
k);
S203: the frequency range that the calculating user sends data to be needed is counted Demand
j
S204: but the user uses the longest service band Max (FS of said frequency band length
k):
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand more than or equal to the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, and recomputate the length of this frequency band;
But if the longest service band Max (FS of said frequency band length
k) the frequency range number count Demand less than the frequency range that the user sends data and needs
j, then identify corresponding frequency band and used by the user, the length of this frequency band is changed to zero, and recomputates the remaining required frequency range of user and count Demand
j
S205: the renewal user sends professional required frequency range and counts Demand
j, forward step S204 to, but up to the user send professional required frequency range number be 0 or all service bands can't satisfy user's business demand.
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Cited By (4)
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| CN102843229A (en) * | 2012-08-24 | 2012-12-26 | 北京邮电大学 | Frequency spectrum aggregation method based on business delay demands |
| CN104995847A (en) * | 2013-02-28 | 2015-10-21 | 西门子公司 | Method and apparatus for communication through power line |
| CN109275190A (en) * | 2017-07-17 | 2019-01-25 | 华为技术有限公司 | A kind of communication means and device |
| CN112367154A (en) * | 2020-12-07 | 2021-02-12 | 国网信息通信产业集团有限公司 | Resource mapping processing method and device based on electric power wireless private network |
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| CN102202028A (en) * | 2010-03-26 | 2011-09-28 | 北京邮电大学 | Method for designing cognitive high-speed wireless communication system under discrete spectrum condition |
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| US20060063500A1 (en) * | 2004-09-22 | 2006-03-23 | Ntt Docomo, Inc. | Frequency band allocation device and method |
| CN102202028A (en) * | 2010-03-26 | 2011-09-28 | 北京邮电大学 | Method for designing cognitive high-speed wireless communication system under discrete spectrum condition |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843229A (en) * | 2012-08-24 | 2012-12-26 | 北京邮电大学 | Frequency spectrum aggregation method based on business delay demands |
| CN102843229B (en) * | 2012-08-24 | 2015-01-14 | 北京邮电大学 | Frequency spectrum aggregation method based on business delay demands |
| CN104995847A (en) * | 2013-02-28 | 2015-10-21 | 西门子公司 | Method and apparatus for communication through power line |
| CN109275190A (en) * | 2017-07-17 | 2019-01-25 | 华为技术有限公司 | A kind of communication means and device |
| CN109275190B (en) * | 2017-07-17 | 2021-10-26 | 华为技术有限公司 | Communication method and device |
| US11490387B2 (en) | 2017-07-17 | 2022-11-01 | Huawei Technologies Co., Ltd. | Communication method and communications apparatus |
| CN112367154A (en) * | 2020-12-07 | 2021-02-12 | 国网信息通信产业集团有限公司 | Resource mapping processing method and device based on electric power wireless private network |
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|---|---|
| CN102547718B (en) | 2016-01-20 |
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