CN104994559B - A kind of method that multiple mobile stations are carried out with access control - Google Patents
A kind of method that multiple mobile stations are carried out with access control Download PDFInfo
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- CN104994559B CN104994559B CN201510492718.1A CN201510492718A CN104994559B CN 104994559 B CN104994559 B CN 104994559B CN 201510492718 A CN201510492718 A CN 201510492718A CN 104994559 B CN104994559 B CN 104994559B
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- vector
- mobile station
- represent
- transmission power
- access control
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The invention discloses a kind of method that multiple mobile stations are carried out with access control, this method includes：Initial setting step, transmission power vector update step, access control instruction vector update step, Lagrangian vector update step and output step.
Description
Technical field
The present invention relates to moving communicating field more particularly to a kind of methods that multiple mobile stations are carried out with access control.
Background technology
In mobile communication process, when mobile station (mobile phone) will be linked into network, it should establish between corresponding base station
Connection.In practical applications, it is possible that following application scenarios：
Currently share N number of mobile station, N number of base station, the access relation between these mobile stations and these base stations be in advance
Through what is determined, for example, mobile station n is only possible to access base station m, that is to say, that the access relation between mobile station and base station is
The one-to-one relationship known.
In above application scene, this N number of mobile station is carried out when access controls, it is necessary to the technical issues of of solution when simultaneously
It is：The transmission power of N number of mobile station be no more than the preset upper limit and to the service quality of N number of mobile station (such as：It can
To be weighed with signal interference ratio) be not less than preset lower limit when, which mobile station is allowed to be linked into their corresponding base stations
And refuse other mobile stations and be linked into base station corresponding to them.
The content of the invention
It is an object of the invention to provide a kind of method that multiple mobile stations are carried out with access control, to solve above-mentioned skill
Art problem.
An embodiment provides it is a kind of to multiple mobile stations carry out access control method, including：Initially
Setting procedure：
Set the transmitting channel information [h between multiple mobile stations and multiple base stations1,h2,...,hN], multiple mobile stations
Service quality lower limiting value [γ1,γ2,...,γN], the received noise power σ of multiple base stations2, multiple mobile stations transmission power
Upper limit value P=[P1,P2,...,PN], the initial value of the transmission power vectors of multiple mobile stationsIt is multiple
The initial value of the access control instruction vector of mobile stationThe initial value of Lagrangian vectorWith iteration convergence control parameter τ, wherein, hn=[h1,n,h2,n,...,hN,n]T, hnRepresent mobile station
Transmission channel between n and the multiple a base station, N represent the sum of multiple mobile stations, also are indicated as multiple mobile stations and provide
The sum of the base station of access service；
Transmission power vector updates step：According to formula
To in transmission power vector
N element is updated, wherein,Represent mobile station n in l updated transmission power level, d=[γ1σ2,γ2
σ2,...,γNσ2], c represents preset cost coefficient, θ(l-1)Represent the Lagrange arrow obtained after the l-1 times update
Amount, s(l-1)Represent the access obtained after the l-1 times update control instruction vector,Represent mobile station n in the l-1 times update
The transmission power level obtained afterwards,
bnRepresent B
Column vector,Represent the row vector of B, T represents transposition；
Access control instruction vector update step：According to formulaTo access
Nth elements in control instruction vector are updated, wherein,Represent that mobile station n refers in l updated access control
Indicating value,Represent mobile station n in l-1 updated access control indicated value, λnRepresent that preset mobile station n's is flat
Weigh parameter, p(l)Represent the l times updated transmission power vector, dnRepresent the nth elements in d；
Lagrangian vector updates step：According to formulaTo Lagrangian vector
In nth elements be updated, wherein,Represent the lagrangian values that mobile station n is obtained after the l times update,
Represent the lagrangian values that mobile station n is obtained after the l-1 times update；
Export step：When the update times to transmission power vector, access control instruction vector sum Lagrange vector reach
During to the preset number upper limit, access is allowed to control the mobile station corresponding to the element that the element value in instruction vector is zero
It is linked into the base station determined by preset access relation.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will be apparent understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.Wherein in the accompanying drawings, reference number
Alphabetic flag afterwards indicates multiple identical components, when referring to these components, will omit its last alphabetic flag.Attached
In figure：
Fig. 1 show the flow chart of one embodiment of the method that multiple mobile stations are carried out with access control of the present invention；
Fig. 2 show the flow of another embodiment of the method that multiple mobile stations are carried out with access control of the present invention
Figure.
In the accompanying drawings, same or similar element is referred to using same or similar label.
Specific embodiment
Carry out detailed description of the present invention illustrative embodiments with reference to the drawings.It should be appreciated that shown in attached drawing and
What the embodiment of description was merely exemplary, it is intended that illustrate the principle and spirit of the invention, and not limit the model of the present invention
It encloses.
With reference to figure 1, Fig. 1 show one embodiment of the method that multiple mobile stations are carried out with access control of the present invention
100 flow chart.Embodiment 100 shown in FIG. 1 can comprise the following steps 101 to 105.
Step 101 is initial setting step：Set the transmitting channel information [h between multiple mobile stations and multiple base stations1,
h2,...,hN], the service quality lower limiting value [γ of multiple mobile stations1,γ2,...,γN], the received noise power σ of base station2, it is more
The upper limit of emission power value P=[P of a mobile station1,P2,...,PN], the initial value of the transmission power vectors of multiple mobile stationsThe initial value of the access control instruction vector of multiple mobile stationsGlug is bright
The initial value of day vectorWith iteration convergence control parameter τ, wherein, hn=[h1,n,h2,n,...,hN,n
]T, hnRepresent the transmission channel between mobile station n and multiple base stations, N represents the sum of multiple mobile stations, and N also is indicated as multiple shiftings
Dynamic platform provides the sum of the base station of access service.
In one embodiment of the invention, iteration convergence control parameter τ can take the value more than or equal to N-1.
Step 102 updates step for transmission power vector：According to formula
To in transmission power vector
N element is updated.
Wherein,Represent mobile station n in l updated transmission power level, d=[γ1σ2,γ2σ2,...,γNσ2], c
Represent preset cost coefficient, in one embodiment of the invention, c can take the integer more than zero, such as：C=1,
θ(l-1)Represent the Lagrangian vector obtained after the l-1 times update, s(l-1)Represent the access obtained after the l-1 times update
Control instruction vector,Represent the transmission power level that mobile station n is obtained after the l-1 times update,
B be N × N complex matrix, bnRepresent the column vector of B,Represent the row vector of B, T represents transposition.
In one embodiment of the invention, the update calculating of the transmission power level of N number of mobile station can be individually placed to
It is concurrently completed in corresponding base station, without centralized calculation.The update of an any of which transmission power level is also disobeyed
The updated value of the other any transmission power levels of Lai Yu.
Step 103 updates step for access control instruction vector：According to formula
The nth elements in instruction vector is controlled access to be updated.
Wherein,Represent that the access that mobile station n is obtained after the l times update controls indicated value,Represent that mobile station n exists
The access control indicated value obtained after the l-1 times update, λnThe balance parameters of preset mobile station n are represented, in the present invention
One embodiment in, λn=50, p(l)Represent the transmission power vector obtained after the l times update, dnRepresent n-th yuan in d
Element.
In one embodiment of the invention, the update calculating of the access control indicated value of N number of mobile station can be distinguished
It is placed in corresponding base station and concurrently completes, without centralized calculation.Any of which access control indicated value is more
Newly also not dependent on the updated value of other any access control indicated values.
Step 104 is that Lagrangian vector updates step：According to formulaTo glug
Nth elements in bright day vector are updated.
Wherein,Represent the lagrangian values that mobile station n is obtained after the l times update,Represent mobile station n the
The lagrangian values obtained after l-1 update.
In one embodiment of the invention, corresponding base can be individually placed to the update calculating of N number of lagrangian values
It is concurrently completed in standing, without centralized calculation.The update of any of which lagrangian values is also not dependent on other
The updated value of any lagrangian values.
Step 105 is output step：Vector sum Lagrange vector is indicated when controlling transmission power vector, access more
When new number reaches the preset number upper limit, access is allowed to control corresponding to the element that the element value in instruction vector is zero
Mobile station be linked into the base station determined by preset access relation.
Above-mentioned change can be used to the update times of transmission power vector, access control instruction vector sum Lagrange vector
L is measured to represent, after all completing once to update to transmission power vector, access control instruction vector sum Lagrange vector, l
1 can be added.
In one embodiment of the invention, the access control that last time update obtains can be indicated to the member in vector
The mobile station corresponding to element that plain value is zero is linked into the base station determined by preset access relation, such as：IfIt can will then be moved using the nth elements value in the transmission power vector updated for the last time as transmission power
Dynamic platform n is linked into the base station determined by preset access relation.
With reference to figure 2, Fig. 2 show one embodiment of the method that multiple mobile stations are carried out with access control of the present invention
200 flow chart.Embodiment 200 shown in Fig. 2 can comprise the following steps 201 to 214.Step 201 to 205 respectively with it is above-mentioned
Step 101 to 105 similar, which is not described herein again.
In step 206, the transmission power level for the mobile station n that update obtains is judgedWhether zero is less than, if less than
Zero, then enter step 208；If it is greater than zero, then enter step 207.
In step 207, the transmission power level for the mobile station n that update obtains is judgedWhether preset hair is more than
Penetrate upper limit of the power value Pn, if it is, entering step 209, otherwise enter step 203.
In a step 208, by the transmission power level of mobile station nIt is updated to zero and enters step 203.
In step 209, willValue be updated to PnAnd enter step 203.
In step 210, the access control indicated value for the mobile station n that update obtains is judgedWhether zero is less than, if so,
211 are then entered step, otherwise enters step 204.
In step 211, the access of mobile station n control indicated value is updated to zero and enters step 204.
In the step 212, the update time to transmission power vector, access control instruction vector sum Lagrange vector is judged
Whether number reaches the preset number upper limit, if reached, enters step 205, otherwise enters step 213.
In step 213, difference, the access control instruction vector of the transmission power vector updated twice recently are judged
Difference and the sum of the difference of Lagrangian vector whether be less than preset threshold value, if it is, enter step 214,
Otherwise return to step 202 after can l being added 1.
It in one embodiment of the invention, can be by judging whether lower inequality such as judges recently twice more into Rob Roy
Whether the sum of difference of the difference of the transmission power vector newly obtained, the difference of access control instruction vector and Lagrangian vector
Less than preset threshold value：
Wherein, ε is preset threshold value.
In step 214, the difference when the transmission power vector updated twice recently, access control indicate vector
When the sum of difference and the difference of Lagrangian vector are less than preset threshold value, allow the member in access control instruction vector
The mobile station corresponding to element that plain value is zero is linked into the base station determined by preset access relation.
In one embodiment of the invention, the access control that last time update obtains can be indicated to the member in vector
The mobile station corresponding to element that plain value is zero is linked into the base station determined by preset access relation, such as：IfIt can will then be moved using the nth elements value in the transmission power vector updated for the last time as transmission power
Dynamic platform n is linked into the base station determined by preset access relation.
So far the method according to embodiments of the present invention that multiple mobile stations are carried out with access control is described.
The method of the present invention can select a part in multiple mobile stations allows it to access by preset access relation
Identified base station and the access for refusing remaining mobile station, so that it is guaranteed that the transmission power of the mobile station of access is no more than in advance
The upper limit of setting and preset lower limit is not less than to the service quality of the mobile station of access.It is in addition, more in this method
In a step, the computing for each mobile station independent can be carried out with full parellel, i.e.,：It can be incited somebody to action in a manner of a kind of full parellel
Corresponding computing is assigned in each base station to be performed parallel.Therefore, it is possible to reduce the number in calculating process between base station and base station
According to exchange capacity, this network larger to number of users is especially suitable.
Claims (5)
1. a kind of method that multiple mobile stations are carried out with access control, it is characterized in that, including：
Initial setting step：Set the transmitting channel information [h between the multiple mobile station and multiple base stations1,h2,...,hN]、
Service quality lower limiting value [the γ of the multiple mobile station1,γ2,...,γN], the received noise power σ of the multiple base station2、
The upper limit of emission power value P=[P of the multiple mobile station1,P2,...,PN], the transmission power vector of the multiple mobile station
Initial valueThe initial value of the access control instruction vector of the multiple mobile stationThe initial value of Lagrangian vectorWith iteration convergence control parameter τ,
In, hn=[h1,n,h2,n,...,hN,n]T, hnRepresent the transmission channel between mobile station n and the multiple a base station, N represents institute
The sum of multiple mobile stations is stated, also is indicated as the sum that the multiple mobile station provides the base station of access service；
Transmission power vector updates step：According to formulaTo n-th yuan in transmission power vector
Element is updated, wherein,Represent mobile station n in l updated transmission power level, d=[γ1σ2,γ2σ2,...,γN
σ2], c represents preset cost coefficient, θ(l-1)Represent the Lagrangian vector obtained after the l-1 times update, s(l-1)Table
Show the access control instruction vector obtained after the l-1 times update,Represent what mobile station n was obtained after the l-1 times update
Transmission power level,bnRepresent the row of B
Vector,Represent the row vector of B, T represents transposition, and m represents m stylobates station, bmFor matrix B m arrange column vector,Table
Show the transmission power level that m-th of mobile station obtains after the l-1 times update, ∈ CN×NIt is for illustrating that matrix B is the multiple square of N × N
Battle array；
Access control instruction vector update step：According to formulaAccess is controlled
Indicate that the nth elements in vector are updated, wherein,Represent that mobile station n controls indicated value in l updated access,Represent mobile station n in l-1 updated access control indicated value, λnRepresent the balance ginseng of preset mobile station n
Number, p(l)Represent the l times updated transmission power vector, dnRepresent the nth elements in d, θnRepresent Lagrangian vector
Nth elements；
Lagrangian vector updates step：According to formulaTo in Lagrangian vector
Nth elements are updated, wherein,Represent the lagrangian values that mobile station n is obtained after the l times update,It represents to move
The lagrangian values that dynamic platform n is obtained after the l-1 times update；
Export step：Indicate that Lagrangian vector is more described in vector sum when controlling the transmission power vector, the access
When new number reaches the preset number upper limit, the access is allowed to control the element institute that the element value in instruction vector is zero
Corresponding mobile station is linked into the base station determined by preset access relation.
2. according to the method described in claim 1, it is characterized in that, it is described output step further comprise：It is updated twice when recently
The difference of the difference of the obtained transmission power vector, the difference of the access control instruction vector and the Lagrangian vector
It is the sum of different be less than preset threshold value when, allow it is described access control indicate vector in element value it is right by zero element
The mobile station answered is linked into the base station determined by preset access relation.
3. according to the method described in claim 1, it is characterized in that, transmission power vector update step further comprises：
When the transmission power level for the mobile station n that update obtains is less than zero, the transmission power level of mobile station n is updated to zero；With
And
When the transmission power level for the mobile station n that update obtains is more than the upper limit of emission power value, by the transmitting work(of mobile station n
Rate value is updated to the upper limit of emission power value.
4. according to the method described in claim 1, it is characterized in that, it is described access control instruction vector update step further wrap
It includes：
When the access control indicated value for the mobile station n that update obtains is less than zero, by the access control indicated value update of mobile station n
It is zero.
5. according to the method described in claim 1, it is characterized in that, the iteration convergence control parameter τ >=N-1.
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Citations (3)
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| US7613145B2 (en) * | 2004-12-22 | 2009-11-03 | Alcatel Lucent | Method for fast resource scheduling in base station and the base station |
| CN104301968A (en) * | 2014-10-16 | 2015-01-21 | 电子科技大学 | Method for selecting access base station cluster for mobile station |
| CN104333885A (en) * | 2014-09-29 | 2015-02-04 | 电子科技大学 | Method for accessing mobile station to base station and device thereof |
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2015
- 2015-08-12 CN CN201510492718.1A patent/CN104994559B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7613145B2 (en) * | 2004-12-22 | 2009-11-03 | Alcatel Lucent | Method for fast resource scheduling in base station and the base station |
| CN104333885A (en) * | 2014-09-29 | 2015-02-04 | 电子科技大学 | Method for accessing mobile station to base station and device thereof |
| CN104301968A (en) * | 2014-10-16 | 2015-01-21 | 电子科技大学 | Method for selecting access base station cluster for mobile station |
Non-Patent Citations (1)
| Title |
|---|
| Joint base station selection and beamforming in uplink SIMO networks with per-user power constraints;changxu jiang;《IEEE》;20150512;963 - 967 * |
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