CN106211199B - Combination control method is accessed for the base station activation of MISO wireless network and user - Google Patents

Combination control method is accessed for the base station activation of MISO wireless network and user Download PDF

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CN106211199B
CN106211199B CN201610575467.8A CN201610575467A CN106211199B CN 106211199 B CN106211199 B CN 106211199B CN 201610575467 A CN201610575467 A CN 201610575467A CN 106211199 B CN106211199 B CN 106211199B
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matrix
vector
row
user
base station
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CN106211199A (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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    • 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 activations and user's access combination control method for MISO wireless network, comprising: Parameter setting step, matrix/vector initial value setting procedure, the first beam shaping matrix update step, the second beam shaping matrix update step, access controls matrix update step, access dominant vector updates step, companion matrix update step, random matrix update step, decision steps and base station and user's selection step.

Description

Combination control method is accessed for the base station activation of MISO wireless network and user
Technical field
The present invention relates to mobile communication fields, and more particularly, to the base station activation of MISO wireless network and user, which access, joins Combination control method.
Background technique
(enter singly to go out) in network in MISO, a mobile station can access multiple base stations simultaneously, it may be assumed that same by multiple base stations more Shi Weiyi user provides service.
In the case where previously given upper limit of emission power and QoS of customer, user that might not be all can Enough it is linked into base station.The prior art is usually to choose the base station sets that can be activated in the case where requiring all use to be accessed per family It closes, or in the case where having determined the collection of base stations that can be activated, chooses the user that can be accessed.This all cannot be simultaneous simultaneously Care for the quantity of accessing user and the quantity of base station activation.
It is therefore desirable to have a kind of new method, it can be in the case where meeting upper limit of emission power and QoS of customer User as much as possible is had access to, combines and is activated to provide the base station number of service.
Summary of the invention
The purpose of the present invention is to provide the base station activations for MISO wireless network to access combination control method with user, To solve the above-mentioned technical problems in the prior art.
An embodiment provides the base station activations for MISO wireless network to jointly control with user's access Method, comprising: Parameter setting step: the transmission channel vector in setting MISO wireless network between each user and base stationThe service quality threshold gamma of user mm, m=1,2 ..., M, wherein M is The sum of user, K are the sum of base station, set noise power σ2；
Matrix/vector initial value setting procedure: the first beam shaping matrix of base station is setSecond beam shaping matrix V=W, access dominant vector s=[s1,s2,...,sm], access Control matrixCompanion matrixFirst random matrixSecond random matrixThird random matrixInitial value；Wherein, T is indicated The antenna sum of each base station, diag (s) is using the element of s as the diagonal matrix of diagonal element；H is down channel matrix, comprising each base station and often Channel information between one user；IMThe unit matrix for being M for order；Subscript H indicates conjugate transposition；
First beam shaping matrix update step: the first wave beam formed matrix is updated according to following formula:
Wherein, c is preparatory The penalty constant of setting, WkFor k-th of row block of the first wave beam forming matrix W, VkFor k-th of row block of V, ZkIt is k-th of Z Row block,For k-th of row block that Λ is removed to submatrix composed by remainder after last M row,For U is removed finally K-th of row block of submatrix composed by remainder, λ after M row1Indicate the pent weight factor in base station, | | | |FExpression is asked Frobenius norm,For ΛwConjugate transposition；
Second beam shaping matrix update step: the second wave beam formed matrix is updated according to following formula:
Wherein, λvIt is transimission power limitationLagrange multiplier,
[x]+=max { x, 0 },Indicate total power budget；
Access control matrix update step: access control matrix is updated according to following formula:
Wherein, ΦuIt indicates to remove third random matrix Φ into submatrix composed by the remainder of last column, FuTable Show and companion matrix F is removed into submatrix composed by the remainder of last column, that is, does not need noise power information σ；
It accesses dominant vector and updates step: updating access dominant vector according to the following formula:
Wherein, λ2The penalty factor of a user is accessed for refusal,It is formed by the last M row of access control matrix U Submatrix m-th of diagonal element,M-th of submatrix composed by last M row for the second random matrix Λ is diagonal Member；
Companion matrix updates step: companion matrix F is updated according to the following formula:
It is m-th of diagonal element of F；It is the removing in F in m-th of row vectorRemaining element forms afterwards Vector, fmFor the row vector of the m row of auxiliary matrix F；ymIt is [HHU, σ 1] m row row vector Indicate [HHU, σ 1] m-th of diagonal element,Indicate m-th of diagonal element of third random matrix Φ,It indicates [HHU, σ 1] in m-th of row vector removeThe vector of remaining element composition afterwards, the i.e. interference for user m and noise portion Point,It indicates to remove in third random matrix ΦThe vector of remaining element composition, γ indicate preset user afterwards The minimum of service quality QoS；
Random matrix updates step: it is random to update the first random matrix, the second random matrix and third according to the following formula Matrix:
Decision steps: it is updated when completing the wheel to all matrix/vectors in matrix/vector initial value setting procedure Afterwards, judge
||W-V||F+||U-[W；diag(s)]||F+||F-[HHU,σ1]||FWhether≤ε is true, if set up, saves Updated first beam shaping matrix W*With access dominant vector s*；Otherwise, in matrix/vector initial value setting procedure All matrix/vectors carry out new round update, wherein ε is preset iteration ends thresholding；
Base station and user select step: according to W*The sparse item of row obtain needing the base station set that activatesAccording to s*It is sparse Item obtains the user's collection for allowing to access
Base station activation and user provided by the present invention for MISO wireless network access combination control method, can be full User as much as possible is accessed in the case where sufficient upper limit of emission power and QoS of customer, combines the base station number being activated Amount.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field Technical staff will become clear.The drawings are only for the purpose of illustrating a 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 later indicates that multiple identical components will omit its last alphabetic flag when referring to these components.Attached In figure:
Fig. 1 is the implementation that the base station activation user for MISO wireless network of the invention accesses combination control method The flow chart of example.
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 The embodiment of description is only exemplary, it is intended that is illustrated the principle and spirit of the invention, and is not limited model of the invention It encloses.
With reference to Fig. 1, Fig. 1 accesses for the base station activation user for MISO wireless network of the invention and combination control method The flow chart of 100 one embodiment.Method 100 may include following steps 101 to 110.
Step 101 is Parameter setting step.
In this step, the transmission channel vector in MISO wireless network between each user and base station 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, multiple matrix/vectors can be set according to following form:
The first beam shaping matrix of base station can be setSecond beam shaping matrix V=W, access dominant vector s=[s1,s2,...,sm], access control matrixAuxiliary moment Battle arrayFirst random matrixSecond random matrixThird with Machine matrixInitial value.
Wherein, T indicates the antenna sum of each base station, and diag (s) is using the element of s as the diagonal matrix of diagonal element；H is down channel matrix, comprising each base station and often Channel information between one user；IMThe unit matrix for being M for order.The element value of three random matrixes can obey normal state Gaussian Profile.
Step 103 is the first beam shaping matrix update step.
In this step, the first wave beam formed matrix can be updated according to following formula:
Wherein, c is preset penalty constant, and the value of c can be equal to 10.For the first wave beam forming K-th of row block of matrix W represents k-th of base station to the transmission beam of all users；VkFor k-th of row block of V, ZkFor Z's K-th of row block,For k-th of row block that Λ is removed to submatrix composed by remainder after last M row,For U is gone Fall k-th of row block of submatrix composed by remainder after last M row, λ1Indicate the pent weight factor in base station, λ1More Greatly, base station is more possible to be closed, | | | |FFrobenius norm is sought in expression,For ΛwConjugate transposition.
Step 104 is the second beam shaping matrix update step.
In this step, the second wave beam formed matrix can be updated according to following formula:
Wherein, λvIt is transimission power limitationLagrange multiplier,
[x]+=max { x, 0 },Indicate total power budget, i.e., the total energy value of maximum allowable consumption.
Step 105 is access control matrix update step.
In this step, access control matrix can be updated according to following formula:
Wherein, ΦuIt indicates to remove third random matrix Φ into submatrix composed by the remainder of last column, it may be assumed that Remove noise power information σ, FuIt indicates to remove companion matrix F into submatrix composed by the remainder of last column, it may be assumed that go Fall noise power information σ；
Step 106 is that access dominant vector updates step.
In this step, access dominant vector can be updated according to the following formula:
Wherein, λ2The penalty factor of a user is accessed for refusal,It is formed by the last M row of access control matrix U Submatrix m-th of diagonal element,M-th of submatrix composed by last M row for the second random matrix Λ is diagonal Member.
Step 107 is that companion matrix updates step.
Companion matrix F can be updated according to the following formula:
Wherein,It is m-th of diagonal element of F；It is the removing in F in m-th of row vectorRemaining element afterwards The vector of composition, fmFor the row vector of the m row of auxiliary matrix F；ymIt is [HHU, σ 1] m row row vector Indicate [HHU, σ 1] m-th of diagonal element,Indicate m-th pair of third random matrix Φ Angle element,Indicate [HHU, σ 1] in m-th of row vector removeThe vector of remaining element composition afterwards, indicates to user m For interference and noise,It indicates to remove in third random matrix ΦThe vector of remaining element composition, γ are indicated afterwards The minimum of preset QoS of customer QoS.
Step 108 is that random matrix updates step.
The first random matrix, the second random matrix and third random matrix can be updated according to the following formula:
It should be understood that above-mentioned step 103 is not necessarily to sequence and executes to 108, that is to say, that these needs The matrix and vector of update, can be according to arbitrarily sequentially going to update.
Step 109 is decision steps.
After completing the wheel update to all matrix/vectors in matrix/vector initial value setting procedure, that is, It says, after having executed a wheel to step 103 to 108, it can be determined that | | W-V | |F+||U-[W；diag(s)]||F+||F- [HHU,σ1]||FWhether≤ε is true, if set up, saves updated first beam shaping matrix W*With access dominant vector s*；Otherwise, new round update is carried out to all matrix/vectors in matrix/vector initial value setting procedure, it may be assumed that repeat and hold Step 103 of row is to 108.
Wherein, ε is preset iteration ends thresholding.
Step 110 is that base station and user select step.
It in this step, can be according to W*The sparse item of row obtain needing the base station set that activatesAnd according to s*It is sparse Item obtains the user's collection for allowing to accessCheck Wk,If | | Wk||F< 1e-4, then being shut off base station k, otherwise will Base station k is put into setCheck sm,If sm< 1e-4, then user m is put into set with regard to accessing user mIt is no Then refuse accessing user m.
So far the base station activation according to an embodiment of the present invention for MISO wireless network is described to combine with user's access Control method, this method can access use as much as possible in the case where meeting upper limit of emission power and QoS of customer Family combines the base station number being activated.

Claims (1)

1. accessing combination control method for the base station activation of MISO wireless network and user, characterized in that include:
Parameter setting step: the transmission channel vector in setting MISO wireless network between each user and base stationThe service quality threshold gamma of user mm, m=1,2 ..., M, wherein M is The sum of user, K are the sum of base station, set noise power σ2,Indicate complex matrix；
Matrix/vector initial value setting procedure: the first beam shaping matrix of base station is set Second beam shaping matrix V=W, access dominant vector s=[s1,s2,...,sm], access control matrixCompanion matrixFirst random matrix Second random matrixThird random matrixInitial value；Wherein, T indicates each base station Antenna sum, diag (s) is using the element of s as the diagonal matrix of diagonal element；H is down channel matrix, comprising each base station and often Channel information between one user；IMThe unit matrix for being M for order；Subscript H indicates conjugate transposition；σ 1, which is one, to be hadMRow Column vector, each of vector element is noise power σ2；
First beam shaping matrix update step: the first wave beam formed matrix is updated according to following formula:Wherein, c is preset Penalty constant, WkFor k-th of row block of the first wave beam forming matrix W, VkFor k-th of row block of V, ZkFor k-th of row block of Z,For k-th of row block that Λ is removed to submatrix composed by remainder after last M row,After U is removed last M row K-th of row block of submatrix composed by remainder, λ1Indicate the pent weight factor in base station, | | | |FExpression is asked Frobenius norm,For ΛwConjugate transposition；
Second beam shaping matrix update step: the second wave beam formed matrix is updated according to following formula: Wherein, λvIt is transimission power limitationLagrange multiplier,
[x]+=max { x, 0 },Indicate total power budget；
Access control matrix update step: access control matrix is updated according to following formula:
Wherein, ΦuIt indicates to remove third random matrix Φ into submatrix composed by the remainder of last column, FuIndicating will Companion matrix F removes submatrix composed by the remainder of last column, that is, does not need noise power information σ；
It accesses dominant vector and updates step: updating access dominant vector according to the following formula:
Wherein, λ2The penalty factor of a user is accessed for refusal,Son composed by last M row for access control matrix U M-th of diagonal element of matrix,M-th of diagonal element of submatrix composed by the last M row for the second random matrix Λ；
Companion matrix updates step: companion matrix F is updated according to the following formula:
It is m-th of diagonal element of F；It is the removing in F in m-th of row vectorAfterwards remaining element composition to Amount, fmFor the row vector of the m row of auxiliary matrix F；ymIt is [HHU, σ 1] m row row vector Indicate [HHU, σ 1] m-th of diagonal element,Indicate m-th of diagonal element of third random matrix Φ,Indicate [HHU, σ 1] in m-th of row vector removeThe vector of remaining element composition, the i.e. interference for user m and noise section afterwards,It indicates to remove in third random matrix ΦThe vector of remaining element composition, γ indicate preset user service afterwards The minimum of quality Q oS；
Random matrix updates step: the first random matrix, the second random matrix and third random matrix are updated according to the following formula:
Z=Z+c (W-V)
Λ=Λ+c (U- [W；diag(s)])；
Φ=Φ+c (F- [HHU,σ1])
Decision steps: after completing the wheel update to all matrix/vectors in matrix/vector initial value setting procedure, sentence It is disconnected
||W-V||F+||U-[W；diag(s)]||F+||F-[HHU,σ1]||FWhether≤ε is true, if set up, saves update The first beam shaping matrix W afterwards*With access dominant vector s*；Otherwise, to all in matrix/vector initial value setting procedure Matrix/vector carries out new round update, wherein ε is preset iteration ends thresholding；
Base station and user select step: according to W*The sparse item of row obtain needing the base station set that activatesAccording to s*Sparse item obtain The user's collection for allowing to access out
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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
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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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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