CN106211199A - Base station activation for MISO wireless network accesses combination control method with user - Google Patents

Base station activation for MISO wireless network accesses combination control method with user Download PDF

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Publication number
CN106211199A
CN106211199A CN201610575467.8A CN201610575467A CN106211199A CN 106211199 A CN106211199 A CN 106211199A CN 201610575467 A CN201610575467 A CN 201610575467A CN 106211199 A CN106211199 A CN 106211199A
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matrix
vector
user
base station
row
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CN106211199B (en
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赵睿铭
林静然
廖昌俊
利强
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University of Electronic Science and Technology of China
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University of Electronic Science and Technology of China
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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
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H04W28/0221—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses the base station activation for MISO wireless network and access combination control method with user, including: Parameter setting step, matrix/vector initial value setting procedure, the first beam shaping matrix update step, the second beam shaping matrix update step, Access Control matrix update step, Access Control vector update step, companion matrix updates step, random matrix updates step, decision steps and base station and selects step with user.

Description

Base station activation for MISO wireless network accesses combination control method with user
Technical field
The present invention relates to moving communicating field, base station activation and user particularly for MISO wireless network access connection Combination control method.
Background technology
In MISO (enter more and singly go out) network, a mobile station can be concurrently accessed multiple base station, it may be assumed that same by multiple base stations Shi Weiyi user provides service.
In the case of previously given upper limit of emission power and QoS of customer, might not all of user can Enough it is linked into base station.Prior art is typically in the case of requiring all use to be access in per family to choose the base station set that can activate Close, or it has been determined that in the case of the collection of base stations that can activate, choose the user that can be access in.This all can not hold concurrently simultaneously Turn round and look at quantity and the quantity of base station activation accessing user.
It is therefore desirable to have a kind of new method, it is possible in the case of meeting upper limit of emission power and QoS of customer Have access to user as much as possible, take into account the base station number being activated to provide service simultaneously.
Summary of the invention
It is an object of the invention to provide the base station activation for MISO wireless network and access combination control method with user, To solve above-mentioned technical problem present in prior art.
An embodiment provides the base station activation for MISO wireless network to jointly control with user's access Method, including: Parameter setting step: set the transmission channel vector between each user and base station in MISO wireless networkThe service quality threshold gamma of user mm, m=1,2 ..., M, wherein, M is The sum of user, K is the sum of base station, sets noise power σ2；
Matrix/vector initial value setting procedure: set the first beam shaping matrix of base station Second beam shaping matrix V=W, Access Control vector s=[s1,s2,...,sm], Access Control matrixCompanion matrixFirst random matrixSecond random square Battle array3rd random matrixInitial value；Wherein, T represents the antenna sum of each base station, Diag (s) is the diagonal matrix with the element of s as diagonal element；H For down channel matrix, comprise the channel information between each base station and each user；IMFor the unit square that exponent number is M Battle array；Subscript H represents conjugate transpose；
First beam shaping matrix update step: the first wave beam formed matrix is updated according to equation below:
Wherein, c is in advance The penalty constant set, WkIt is the kth row block of the first wave beam forming matrix W, VkFor the kth row block of V, ZkKth for Z Row block,By the kth row block of the submatrix that remainder after Λ removes last M row is formed,For U being removed last M The kth row block of the submatrix that after row, remainder is formed, λ1Represent the pent weight factor in base station, | |. | |FExpression is asked Frobenius norm,For ΛwConjugate transpose；
Second beam shaping matrix update step: update the second wave beam formed matrix according to equation below:
Wherein, λvIt is that through-put power limitsLagrange multiplier,
λ v = [ 1 2 t r ( ( Z + c W ) ( Z + c W ) H ) P ‾ - c 2 - 1 ] + ,
[x]+=max{x, 0},Represent total power budget；
Access Control matrix update step: according to equation below renewal Access Control matrix:
U = 1 c ( HH H + I ) - 1 ( c [ W ; d i a g ( s ) ] + HΦ u + cHF u - Λ )
Wherein, ΦuRepresent and the 3rd random matrix Φ is removed the submatrix that the remainder of last string is formed, FuTable Show and companion matrix F is removed the submatrix that the remainder of last string is formed, i.e. need not noise power information σ；
Access Control vector updates step: update Access Control according to equation below vectorial:
Wherein, λ2The penalty factor of a user is accessed for refusal,Last M row by Access Control matrix U is formed The m-th diagonal element of submatrix,M-th diagonal angle by the submatrix that the last M row of the second random matrix Λ is formed Unit；
Companion matrix updates step: according to equation below renewal companion matrix F:
It it is the m-th diagonal element of F；It it is the removing in F in m-th row vectorRear remaining elementary composition Vector, fmRow vector for the m row of companion matrix F；ymIt is [HHU, σ 1] the row vector of m row Represent [HHU, σ 1] m-th diagonal element,Represent the m-th diagonal element of the 3rd random matrix Φ,Represent [HHU, σ 1] in m-th row vector removeRear remaining elementary composition vector, i.e. interference for user m and noise portion Point,Represent in the 3rd random matrix Φ and removeRear remaining elementary composition vector, γ represents user set in advance The minimum of service quality QoS；
Random matrix updates step: update the first random matrix, the second random matrix and the 3rd according to equation below random Matrix:
Z=Z+c (W-V)
Λ=Λ+c (U-[W；diag(s)])；
Φ=Φ+c (F-[HHU,σ1])
Decision steps: when completing to take turns renewal to one of all matrix/vector in matrix/vector initial value setting procedure After, it is judged that
||W-V||F+||U-[W；diag(s)]||F+||F-[HHU,σ1]||FWhether≤ε sets up, if set up, then preserves The first beam shaping matrix W after renewal*With Access Control vector s*；Otherwise, in matrix/vector initial value setting procedure All matrix/vector carry out new round renewal, and wherein, ε is iteration ends thresholding set in advance；
Base station and user select step: according to W*The sparse item of row obtain need activate base station setAccording to s*Dilute Thin item draws the user's collection allowing to access
The base station activation for MISO wireless network that the present invention provides and user access combination control method, it is possible to full Access user as much as possible in the case of foot upper limit of emission power and QoS of customer, take into account the base station number being activated simultaneously Amount.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit common for this area Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as the present invention Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.The most in the accompanying drawings, reference number Alphabetic flag afterwards indicates multiple identical parts, when referring to these parts, will omit its last alphabetic flag.Attached In figure:
Fig. 1 is the enforcement that the base station activation user for MISO wireless network of the present invention accesses combination control method The flow chart of example.
In the accompanying drawings, use same or similar label to refer to same or similar element.
Detailed description of the invention
The illustrative embodiments of the present invention is described in detail referring now to accompanying drawing.Should be appreciated that shown in accompanying drawing and The embodiment described is merely exemplary, it is intended that the principle of the explaination present invention and spirit, and and the model of the unrestricted present invention Enclose.
Access and the side of jointly controlling with reference to the base station activation user for MISO wireless network that Fig. 1, Fig. 1 are the present invention The flow chart of one embodiment of method 100.Method 100 can comprise the steps of 101 to 110.
Step 101 is Parameter setting step.
In this step, the transmission channel vector between each user and base station in MISO wireless network can be setSet the service quality threshold gamma of each base station access service user mm,m =1,2 ..., M.Wherein, M is the sum of user, and K is the sum of base station, sets noise power σ2；
Step 102 is matrix/vector initial value setting procedure.
In this step, can be according to the following form multiple matrix/vector of setting:
The first beam shaping matrix of base station can be setSecond beam shaping matrix V=W, Access Control vector s=[s1,s2,...,sm], Access Control matrixAuxiliary MatrixFirst random matrixSecond random matrix3rd Random matrixInitial value.
Wherein, T represents the antenna sum of each base station, and diag (s) is the diagonal matrix with the element of s as diagonal element；H is down channel matrix, comprises each base station with every Channel information between one user；IMIt is the unit matrix of M for exponent number.The element value of three random matrixes can obey normal state Gauss distribution.
Step 103 is the first beam shaping matrix update step.
In this step, according to equation below, the first wave beam formed matrix can be updated:
Wherein, c is penalty constant set in advance, and the value of c can be equal to 10.It it is the first wave beam forming The kth row block of matrix W, it represents the kth base station transmission beam to all users；VkFor the kth row block of V, ZkFor Z's Kth row block,By the kth row block of the submatrix that remainder after Λ removes last M row is formed,For U is removed The kth row block of the submatrix that remainder is formed, λ after last M row1Represent the pent weight factor in base station, λ1It is the biggest, Base station is more likely closed, | |. | |FRepresent and seek Frobenius norm,For ΛwConjugate transpose.
Step 104 is the second beam shaping matrix update step.
In this step, the second wave beam formed matrix can be updated according to equation below:
V = Z + c W 2 + 2 λ v + c
Wherein, λvIt is that through-put power limitsLagrange multiplier,
λ v = [ 1 2 t r ( ( Z + c W ) ( Z + c W ) H ) P ‾ - c 2 - 1 ] + ,
[x]+=max{x, 0},Represent total power budget, the total energy value of the most maximum allowable consumption.
Step 105 is Access Control matrix update step.
In this step, can be according to equation below renewal Access Control matrix:
U = 1 c ( HH H + I ) - 1 ( c [ W ; d i a g ( s ) ] + HΦ u + cHF u - Λ )
Wherein, ΦuRepresent and the 3rd random matrix Φ removed the submatrix that the remainder of last string is formed, it may be assumed that Remove noise power information σ, FuRepresent and companion matrix F is removed the submatrix that the remainder of last string is formed, it may be assumed that go Fall noise power information σ；
Step 106 is that Access Control vector updates step.
In this step, Access Control can be updated according to equation below vectorial:
Wherein, λ2The penalty factor of a user is accessed for refusal,Last M row by Access Control matrix U is formed The m-th diagonal element of submatrix,M-th diagonal angle by the submatrix that the last M row of the second random matrix Λ is formed Unit.
Step 107 is that companion matrix updates step.
Can be according to equation below renewal companion matrix F:
Wherein,It it is the m-th diagonal element of F；It it is the removing in F in m-th row vectorRear remaining element The vector of composition, fmRow vector for the m row of companion matrix F；ymIt is [HHU, σ 1] the row vector of m row Represent [HHU, σ 1] m-th diagonal element,Represent the m-th diagonal element of the 3rd random matrix Φ,Represent [HHU, σ 1] in m-th row vector removeRear remaining elementary composition vector, represents the interference for user m and makes an uproar Sound,Represent in the 3rd random matrix Φ and removeRear remaining elementary composition vector, γ represents user set in advance The minimum of service quality QoS.
Step 108 is that random matrix updates step.
The first random matrix, the second random matrix and the 3rd random matrix can be updated according to equation below:
Z=Z+c (W-V)
Λ=Λ+c (U-[W；diag(s)]).
Φ=Φ+c (F-[HHU,σ1])
It should be understood that above-mentioned step 103 is to 108, it is not necessarily to order and performs, say, that these need The matrix updated and vector, can go to update according at random order.
Step 109 is decision steps.
After completing to take turns renewal to one of all matrix/vector in matrix/vector initial value setting procedure, namely Say, when step 103 to 108 has been performed one take turns after, it can be determined that | | W-V | |F+||U-[W；diag(s)]||F+||F- [HHU,σ1]||FWhether≤ε sets up, if set up, then preserves the first beam shaping matrix W after updating*With Access Control vector s*；Otherwise, all matrix/vector in matrix/vector initial value setting procedure are carried out new round renewal, it may be assumed that repeat and hold Step 103 of row is to 108.
Wherein, ε is iteration ends thresholding set in advance.
Step 110 is that base station selects step with user.
In this step, can be according to W*The sparse item of row obtain need activate base station setAnd according to s*Sparse item Draw the user's collection allowing to accessCheckIf | | Wk||F＜ 1e-4, then it is shut off base station k, otherwise by base The k that stands puts into setCheckIf sm＜ 1e-4, then just access user m, user m is put into setOtherwise Refusal accesses user m.
So far describe the base station activation for MISO wireless network according to embodiments of the present invention to access with user and combine Control method, the method can access use as much as possible in the case of meeting upper limit of emission power and QoS of customer Family, takes into account the base station number being activated simultaneously.

Claims (1)

1. the base station activation for MISO wireless network accesses combination control method with user, it is characterized in that, including:
Parameter setting step: set the transmission channel vector between each user and base station in MISO wireless networkThe service quality threshold gamma of user mm, m=1,2 ..., M, wherein, M is The sum of user, K is the sum of base station, sets noise power σ2；
Matrix/vector initial value setting procedure: set the first beam shaping matrix of base station Second beam shaping matrix V=W, Access Control vector s=[s1,s2,...,sm], Access Control matrix
Companion matrixFirst random matrixSecond random matrix 3rd random matrixInitial value；Wherein, T represents the antenna sum of each base station, and diag (s) is the unit with s Element is the diagonal matrix of diagonal element；H is descending letter Road matrix, comprises the channel information between each base station and each user；IMIt is the unit matrix of M for exponent number；Subscript H table Show conjugate transpose；
First beam shaping matrix update step: the first wave beam formed matrix is updated according to equation below:
Wherein, c is for presetting Penalty constant, WkIt is the kth row block of the first wave beam forming matrix W, VkFor the kth row block of V, ZkKth row for Z Block,By the kth row block of the submatrix that remainder after Λ removes last M row is formed,For U being removed last M row The kth row block of the submatrix that rear remainder is formed, λ1Represent the pent weight factor in base station, | |. | |FExpression is asked Frobenius norm,For ΛwConjugate transpose；
Second beam shaping matrix update step: update the second wave beam formed matrix according to equation below:
Wherein, λvIt is that through-put power limitsLagrange multiplier,
[x]+=max{x, 0},Represent total power budget；
Access Control matrix update step: according to equation below renewal Access Control matrix:
Wherein, ΦuRepresent and the 3rd random matrix Φ is removed the submatrix that the remainder of last string is formed, FuRepresenting will Companion matrix F removes the submatrix that the remainder of last string is formed, and i.e. need not noise power information σ；
Access Control vector updates step: update Access Control according to equation below vectorial:
Wherein, λ2The penalty factor of a user is accessed for refusal,The son formed by the last M row of Access Control matrix U The m-th diagonal element of matrix,M-th diagonal element by the submatrix that the last M row of the second random matrix Λ is formed；
Companion matrix updates step: according to equation below renewal companion matrix F:
It it is the m-th diagonal element of F；It it is the removing in F in m-th row vectorRear remaining elementary composition vector, fmRow vector for the m row of companion matrix F；ymIt is [HHU, σ 1] the row vector of m row Table Show [HHU, σ 1] m-th diagonal element,Represent the m-th diagonal element of the 3rd random matrix Φ,Represent [HHU,σ1] Middle m-th row vector is removedRear remaining elementary composition vector, i.e. interference for user m and noise section, Represent in the 3rd random matrix Φ and removeRear remaining elementary composition vector, γ represents user's Service Quality set in advance The minimum of amount QoS；
Random matrix updates step: update the first random matrix, the second random matrix and the 3rd random matrix according to equation below:
Z=Z+c (W-V)
Λ=Λ+c (U-[W；diag(s)])；
Φ=Φ+c (F-[HHU,σ1])
Decision steps: after completing to take turns renewal to one of all matrix/vector in matrix/vector initial value setting procedure, sentence Disconnected | | W-V | |F+||U-[W；diag(s)]||F+||F-[HHU,σ1]||FWhether≤ε sets up, if set up, then preserves after updating The first beam shaping matrix W*With Access Control vector s*；Otherwise, to all squares in matrix/vector initial value setting procedure Battle array/vector carries out new round renewal, and wherein, ε is iteration ends thresholding set in advance；
Base station and user select step: according to W*The sparse item of row obtain need activate base station setAccording to s*Sparse item obtain Go out the user's collection allowing to access
CN201610575467.8A 2016-07-20 2016-07-20 Combination control method is accessed for the base station activation of MISO wireless network and user Active CN106211199B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107070511A (en) * 2017-06-13 2017-08-18 电子科技大学 A kind of user access control optimization method for the wireless fairness networks of MISO
CN107087279A (en) * 2017-06-13 2017-08-22 电子科技大学 It is a kind of based on the base station activation and beam-forming method of stablizing access relation
CN111182571A (en) * 2020-01-13 2020-05-19 电子科技大学 Long-term joint optimization method for base station activation control and beam forming

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CN104301968A (en) * 2014-10-16 2015-01-21 电子科技大学 Method for selecting access base station cluster for mobile station

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CN101459930A (en) * 2007-12-11 2009-06-17 大唐移动通信设备有限公司 Location measurement information interaction method, system, base station and wireless network controller
CN101753193A (en) * 2008-12-22 2010-06-23 大唐移动通信设备有限公司 Method for dividing multi-user channel estimation and equipment thereof
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107070511A (en) * 2017-06-13 2017-08-18 电子科技大学 A kind of user access control optimization method for the wireless fairness networks of MISO
CN107087279A (en) * 2017-06-13 2017-08-22 电子科技大学 It is a kind of based on the base station activation and beam-forming method of stablizing access relation
CN107087279B (en) * 2017-06-13 2020-02-14 电子科技大学 Base station activation and beam forming method based on stable access relation
CN107070511B (en) * 2017-06-13 2020-04-14 电子科技大学 User access control optimization method for MISO wireless fairness network
CN111182571A (en) * 2020-01-13 2020-05-19 电子科技大学 Long-term joint optimization method for base station activation control and beam forming
CN111182571B (en) * 2020-01-13 2021-02-02 电子科技大学 Long-term joint optimization method for base station activation control and beam forming

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