CN106454851A - Frequency spectrum auction method of femto cellular base stations in double-layer heterogeneous network - Google Patents
Frequency spectrum auction method of femto cellular base stations in double-layer heterogeneous network Download PDFInfo
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- CN106454851A CN106454851A CN201610944184.6A CN201610944184A CN106454851A CN 106454851 A CN106454851 A CN 106454851A CN 201610944184 A CN201610944184 A CN 201610944184A CN 106454851 A CN106454851 A CN 106454851A
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- base station
- femto base
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
Abstract
The invention discloses a frequency spectrum auction method of femto cellular base stations in a double-layer heterogeneous network. The frequency spectrum auction method comprises the following steps: 1) a frequency spectrum auction model is established; 2) femto base stations are deployed, and the double-layer heterogeneous network is constructed; 3) an authorized user puts m idle frequency bands in a frequency spectrum pool of a secondary frequency spectrum market; 4) a macro base station serves as an auctioneer to bid for the idle frequency bands, wherein the initial price is not smaller than the base price of the authorized user; 5) the femto base stations send competitive bidding requests to the macro base station, and accept the bid of the macro base station; 6) the macro base station counts the number n of the femto base stations sending the competitive bidding requests; and 7) the macro base station performs judgment. By adoption of the method, the problem of low utilization rate of macro cellular spectrum resources can be solved, the advantages of small power, higher network coverage and the like of the femto base stations can also be brought into full play, the spectrum efficiency is improved, the effective sharing and dynamic management of spectrum resources are realized, and the problems of indoor coverage, hotspot coverage, depth coverage and the like of a mobile communication network are solved.
Description
Technical field
The present invention relates to wireless communication technology field and in particular to a kind of bilayer heterogeneous network in femtocell frequency
Spectrum auction system.
Background technology
With the high speed development of wireless communication technology and mobile Internet, wireless data service amount is violent with surprising rapidity
Increase.Investigation display:Voice service more than 60% and 90% data service occur indoors, and this ratio also continue
It is constantly increasing.Therefore, the voice-and-data business for indoor user provides two-forty and high-quality covering service to become to get over
Come more important.Femtocell (Femtocell BS) can effectively strengthen in-door covering and lifting network capacity as one kind
Wireless access technology, receive the concern of communication industry height, and become the research in different systems mobile communications network
Focus.Femtocell is a kind of low transmitting power, the base station equipment of small range covering, as the benefit of 3/4G macrocellular
Fill, have the advantages that flexibly, rapid deployment, can effectively solve focus absorption, blind spot, the network coverage of weak covering scene are asked
Topic, can make operator provide the user more preferable WiMAX voice and data service with lower cost, realize network no
Place does not exist.
The introducing of femto base station makes up the deficiency of macrocellular well, lifts spectrum efficiency, improves network capacity, meets
The growth requirement of future mobile communications business and lifting Consumer's Experience.But because rare frequency spectrum resource was located within the most of the time
In idle condition, cause substantial amounts of frequency spectrum resource and waste, lead to distribute to the frequency spectrum resource of the femto base station of secondary market
Extremely limited, the features such as do not give full play of femto base station optimizing network coverage.The frequency of the step-by-step movement auction based on competitive bidding
Spectrum distribution method is considered as to solve having of frequency spectrum resource assignment problem with its less information requirement and good distribution effects
Efficacious prescriptions method, it can make full use of the idle frequency spectrum in spectrum interposition, realize the effectively shared and dynamic of frequency spectrum resource and manage, from
Fundamentally solve the problems, such as that spectrum efficiency is low.
Content of the invention
The purpose of the present invention is for the deficiencies in the prior art, and provides femtocell in a kind of bilayer heterogeneous network
Spectrum auction method, idle frequency spectrum resource method by inch of candle is distributed to the femto base station of with no authorized frequency band.
This method can solve the problems, such as that macrocellular frequency spectrum resource utilization rate is not high, can give full play of femto base again
Stand small-power, the higher network coverage the advantages of, thus further improve the availability of frequency spectrum, realize the effectively shared of frequency spectrum resource
Manage with dynamic, solve the in-door covering of mobile communications network, the problems such as focus covers, depth covers, provide the user at a high speed
Wireless service.
The technical scheme realizing the object of the invention is：
In a kind of bilayer heterogeneous network, the spectrum auction method of femtocell, comprises the steps：
1) set up spectrum auction model：Described spectrum auction model is the system model based on double-deck heterogeneous network, Mai Fangwei
Have multiple non-overlapping copies and multiple authorized users of not subdivisible idle frequency band, and the property of these frequency bands is bandwidth, tune
Mode processed is identical, and their idle frequency band is put in the spectrum pool of secondary market the seller, with no authorized frequency band
Buyer be by competitive bidding obtain idle grants frequency spectrum and as wireless link for unauthorized user provide communication service femto
Base station, each femto base station is only concerned either with or without which section frequency the frequency spectrum in acquisition spectrum pool is without be concerned about acquisition
Spectrum, each femto base station only need to use an idle frequency band in a length of auction；
2) deployment femto base station, the double-deck heterogeneous network of construction：In this heterogeneous network, if multiple authorized user is in secondary city
Have m idle authorized frequency bands in the spectrum pool of field, be designated as M={ 1,2 ..., m }, be seller for authorized user, definition letter
Road reserve price, this reserve price mainly comprises that authoring system buys cost during frequency spectrum and femto base station is potential dry to authorized user
Disturb, be the reservation price to channel i for the seller, be designated as vi, i ∈ M, this reserve price with authoring system be subject to from femto base station across
Layer interference is modeled；There is n femto base station to gather as buyer, be designated as N={ 1,2 ..., n }；For femto base station
I.e. buyer, defines the income obtaining when channel is evaluated for wireless link using this channel, with channel capacity and signal quality SINR
Relevant, auction theory serves primarily in the data transfer of interior, has required for transfer rate and handling capacity, therefore can be by channel
Appraisal is modeled as the function of channel capacity, and note femto base station j is c to the appraisal of idle frequency spectrum iji, j ∈ N, i ∈ M, n millimicro
Micro-base station makes appraisal matrix to authorized frequency bands, is designated as：
Cj={ cji}M×N, j ∈ N, i ∈ M
3) authorized user puts into m idle frequency band in the spectrum pool in secondary spectrum market；
4) macro base station serves as auctioneer is idle frequency band asked price, and initial prices are not less than the reserve price of authorized user；
5) femto base station sends competitive bidding request to macro base station, agrees to the asked price of macro base station：Macro base station exists as auctioner
Each wheel auction carries out asked price when starting, and its initial asked price is not less than channel reserve price vi, i ∈ M, femto base station receives asked price
After information, by determining to send competitive bidding request with oneself comparing to the appraisal of frequency band, if its asked price is less than femto base
During the appraisal standing to channel, femto base station sends competitive bidding request, and macro base station statistics initiates the millimicro of request of vying for purchase in real time simultaneously
Quantity n of micro-base station；
6) macro base station statistics sends quantity n of the femto base station of competitive bidding request：N is to initiate the millimicro of request of vying for purchase in real time
The quantity of micro-base station；
7) macro base station judges：Macro base station judges to send femto base station number n and the idle frequency band quantity m ratio of competitive bidding request
Relatively, if m please be more than n, in order to reach steady statue, macro base station carries out next round asked price and raises one than last round of price
Individual step-length ε；If n is less than or equal to m, macro base station is thought and is reached steady statue, End of Auction, and authorized user is cried with last wheel
Valency sells idle frequency band.
Authorized user concedes frequency spectrum with the price of last wheel asked price after the End of Auction of every wheel, if the valency of last wheel
Lattice are pi, cjiPiAnd cjiVi,piVi, i ∈ M.Result according to distribution defines the 0-1 allocation matrix F=of a N*M
{fji}N*M, fji∈{0,1}.Wherein when femto base station j has bought one section of frequency spectrum i as wireless link access point from authoring system
When, then fji=1, otherwise fji=0.
When a) setting End of Auction, it is p that the idle frequency band in spectrum pool sells asked pricei, receive such that it is able to calculate authoring system i
Benefit is：
b)Ζi=pi-vi(1)
The income of femto base station j is：
Sj=cj-pi(2)
I.e. system total revenue is authoring system income and femto base station income sum, is expressed as：
M=Zi+Sj=cj-vi(3)
From system overall situation angle it is considered to the income being also contemplated for wireless link while loss of authoring system, permissible
List the object function of system benefit.It is defined as femto base station dry with suffered by authoring system as the obtained income of wireless link
The difference disturbed is global gain, is designated as：
Rational channel distribution will meet two constraints：It is each femto base station
A channel can only be used within the same time：It is that each channel can only be to one within the same time
Individual femto base station.
Optimization problem can be expressed as：
The definition of the system utility value in model is in a length of auction, whole auction mould in an auction process
The total revenue that type obtains, system utility value is higher represent auction algorithm frequency spectrum allocative efficiency higher.
This method had both solved the problems, such as that macrocellular frequency spectrum resource utilization rate was not high, had given full play to femto base again
Stand small-power, the higher network coverage the advantages of, thus further increase the availability of frequency spectrum it is achieved that frequency spectrum resource effective
Shared and dynamic manage, solve the in-door covering of mobile communications network, the problems such as focus covers, depth covers, be that user carries
High-speed wireless services are supplied.
Brief description
Fig. 1 is embodiment method flow schematic diagram；
Fig. 2 is embodiment femto base station spectrum auction system model schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples present invention is further elaborated, but is not limitation of the invention.
Embodiment：
With reference to Fig. 1, in a kind of bilayer heterogeneous network, the spectrum auction method of femtocell, comprises the steps：
1) set up spectrum auction model：As shown in Fig. 2 described spectrum auction model is the system mould based on double-deck heterogeneous network
Type, the seller is the multiple authorized users having multiple non-overlapping copies and not subdivisible idle frequency band, and the property of these frequency bands
I.e. bandwidth, modulation system are identical, and their idle frequency band is put in the spectrum pool of secondary market the seller, does not award
The buyer of power frequency band is to obtain idle grants frequency spectrum by competitive bidding and be used as wireless link for unauthorized user offer communication service
Femto base station, it is which that each femto base station is only concerned either with or without the frequency spectrum obtaining in spectrum pool without being concerned about obtain
One section of frequency spectrum, each femto base station only need to use an idle frequency band in a length of auction；
2) deployment femto base station, the double-deck heterogeneous network of construction：In this heterogeneous network, if multiple authorized user is in secondary city
Have m idle authorized frequency bands in the spectrum pool of field, be designated as M={ 1,2 ..., m }, be seller for authorized user, definition letter
Road reserve price, this reserve price mainly comprises that authoring system buys cost during frequency spectrum and femto base station is potential dry to authorized user
Disturb, be the reservation price to channel i for the seller, be designated as vi, i ∈ M, this reserve price with authoring system be subject to from femto base station across
Layer interference is modeled；There is n femto base station to gather as buyer, be designated as N={ 1,2 ..., n }；For femto base station
I.e. buyer, defines the income obtaining when channel is evaluated for wireless link using this channel, with channel capacity and signal quality SINR
Relevant, auction theory serves primarily in the data transfer of interior, has required for transfer rate and handling capacity, therefore can be by channel
Appraisal is modeled as the function of channel capacity, and note femto base station j is c to the appraisal of idle frequency spectrum iji, j ∈ N, i ∈ M, n millimicro
Micro-base station makes appraisal matrix to authorized frequency bands, is designated as：
Cj={ cji}M×N, j ∈ N, i ∈ M
3) authorized user puts into m idle frequency band in the spectrum pool in secondary spectrum market；
4) macro base station serves as auctioneer is idle frequency band asked price, and initial prices are not less than the reserve price of authorized user；
5) femto base station sends competitive bidding request to macro base station, agrees to the asked price of macro base station：Macro base station exists as auctioner
Each wheel auction carries out asked price when starting, and its initial asked price is not less than channel reserve price vi, i ∈ M, femto base station receives asked price
After information, by determining to send competitive bidding request with oneself comparing to the appraisal of frequency band, if its asked price is less than femto base
During the appraisal standing to channel, femto base station sends competitive bidding request, and macro base station statistics initiates the millimicro of request of vying for purchase in real time simultaneously
Quantity n of micro-base station；
6) macro base station statistics sends quantity n of the femto base station of competitive bidding request：N is to initiate the millimicro of request of vying for purchase in real time
The quantity of micro-base station；
7) macro base station judges：Macro base station judges to send femto base station number n and the idle frequency band quantity m ratio of competitive bidding request
Relatively, if m please be more than n, in order to reach steady statue, macro base station carries out next round asked price and raises one than last round of price
Individual step-length ε；If n is less than or equal to m, macro base station is thought and is reached steady statue, End of Auction, and authorized user is cried with last wheel
Valency sells idle frequency band.
Authorized user concedes frequency spectrum with the price of last wheel asked price after the End of Auction of every wheel, if the valency of last wheel
Lattice are pi, cjiPiAnd cjiVi,piVi, i ∈ M.Result according to distribution defines the 0-1 allocation matrix F=of a N*M
{fji}N*M, fji∈{0,1}.Wherein when femto base station j has bought one section of frequency spectrum i as wireless link access point from authoring system
When, then fji=1, otherwise fji=0.
When a) setting End of Auction, it is p that the idle frequency band in spectrum pool sells asked pricei, receive such that it is able to calculate authoring system i
Benefit is：
b)Ζi=pi-vi(1)
The income of femto base station j is：
Sj=cj-pi(2)
I.e. system total revenue is authoring system income and femto base station income sum, is expressed as：
M=Zi+Sj=cj-vi(3)
From system overall situation angle it is considered to the income being also contemplated for wireless link while loss of authoring system, permissible
List the object function of system benefit.It is defined as femto base station dry with suffered by authoring system as the obtained income of wireless link
The difference disturbed is global gain, is designated as：
Rational channel distribution will meet two constraints：It is each femto base station
A channel can only be used within the same time：It is that each channel can only be to one within the same time
Individual femto base station.
Optimization problem can be expressed as：
The definition of the system utility value in model is in a length of auction, whole auction mould in an auction process
The total revenue that type obtains, system utility value is higher represent auction algorithm frequency spectrum allocative efficiency higher.
Claims (1)
1. a kind of bilayer heterogeneous network in femtocell spectrum auction method, it is characterized in that, comprise the steps：
1) set up spectrum auction model：Described spectrum auction model is the system model based on double-deck heterogeneous network, and the seller is to have
Multiple non-overlapping copies and multiple authorized users of not subdivisible idle frequency band, and the property of these frequency bands is bandwidth, modulation methods
Formula is identical, and their idle frequency band is put in the spectrum pool of secondary market the seller, the buyer of with no authorized frequency band
Be by competitive bidding obtain idle grants frequency spectrum and as wireless link for unauthorized user provide communication service femto base station,
Each femto base station is only concerned either with or without which section frequency spectrum the frequency spectrum in acquisition spectrum pool is without be concerned about acquisition, each
Femto base station only need to use an idle frequency band in a length of auction；
2) deployment femto base station, the double-deck heterogeneous network of construction：In this heterogeneous network, if multiple authorized user is in secondary market
Have m idle authorized frequency bands in spectrum pool, be designated as M={ 1,2 ..., m }, be seller for authorized user, define channel bottom
Valency, this reserve price mainly comprises authoring system and buys potential interference to authorized user of cost and femto base station during frequency spectrum, is
The reservation price to channel i for the seller, is designated as vi, i ∈ M, this reserve price is subject to the cross-layer from femto base station to do with authoring system
Disturb and be modeled；There is n femto base station to gather as buyer, be designated as N={ 1,2 ..., n }；Femto base station is bought
Family, defines the income obtaining when channel is evaluated for wireless link using this channel, relevant with channel capacity and signal quality SINR,
Auction theory serves primarily in the data transfer of interior, has for transfer rate and handling capacity required, therefore can evaluate channel
It is modeled as the function of channel capacity, note femto base station j is c to the appraisal of idle frequency spectrum iji, j ∈ N, i ∈ M, n femto base
Stand and appraisal matrix is made to authorized frequency bands, be designated as：
Cj={ cji}M×N, j ∈ N, i ∈ M；
3) authorized user puts into m idle frequency band in the spectrum pool in secondary spectrum market；
4) macro base station serves as auctioneer is idle frequency band asked price, and initial prices are not less than the reserve price of authorized user；
5) femto base station sends competitive bidding request to macro base station, agrees to the asked price of macro base station：Macro base station is as auctioner each
Wheel auction carries out asked price when starting, and its initial asked price is not less than channel reserve price vi, i ∈ M, femto base station receives asked price information
Afterwards, by determining to send competitive bidding request with oneself comparing to the appraisal of frequency band, if its asked price is less than femto base station pair
During the appraisal of channel, femto base station sends competitive bidding request, and macro base station statistics initiates the femto base of request of vying for purchase in real time simultaneously
Quantity n stood；
6) macro base station statistics sends quantity n of the femto base station of competitive bidding request：N is to initiate the femto base of request of vying for purchase in real time
The quantity stood；
7) macro base station judges：Macro base station judges that the femto base station number n sending competitive bidding request is compared with idle frequency band quantity m, if
Please be more than m by n, then in order to reach steady statue, macro base station carries out next round asked price and raises a step than last round of price
Long ε；If n is less than or equal to m, macro base station is thought and is reached steady statue, End of Auction, and authorized user is gone out with last wheel asked price
Sell idle frequency band.
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Cited By (1)
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| CN114900842A (en) * | 2022-04-01 | 2022-08-12 | 上海海事大学 | Network architecture for expanding maritime communication range based on D2D communication |
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