CN105208667B - A kind of distributed transmission scheduling system based on capacity boost - Google Patents
A kind of distributed transmission scheduling system based on capacity boost Download PDFInfo
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- CN105208667B CN105208667B CN201510616891.8A CN201510616891A CN105208667B CN 105208667 B CN105208667 B CN 105208667B CN 201510616891 A CN201510616891 A CN 201510616891A CN 105208667 B CN105208667 B CN 105208667B
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- cell
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
The distributed transmission based on capacity boost of the present invention dispatches system, reporting channel information is carried out in the mobile terminal that business is provided in cell to snr value higher than response lag, the mobile terminal for being less than predetermined value to interference level in business supplementary cell carries out reporting channel information, it can be in the case where bandwidth resources lack and are unstable, substantially reduce the information content of reverse transfer, lifting system capacity increases the efficiency that border cell user participates in distributed transmission.
Description
Technical field
The present invention relates to wireless communication fields more particularly to a kind of distributed transmission based on capacity boost to dispatch system.
Background technology
As sharply increasing for mobile communication subscriber quantity is rapidly growing with wireless broadband business (such as multimedia service),
It is intended that mobile communication system can provide higher data transmission rate (100Mbps or more) and higher spectrum efficiency
(10bps/Hz or more).
It is that one kind configuring multiple antennas in transmitting terminal to enter singly to go out system more, and receiving terminal configures the intelligent antenna technology of single antenna,
It is a kind of effective means for improving spectrum efficiency.And enter singly to go out in systematic difference actually, from cell and adjacent cell. more
Interference can greatly influence system performance, it is therefore desirable to interference is inhibited, simultaneously as border cell user is usually
" starvation " state is in less than scheduling, it is therefore desirable to consider the distributed transmission of border cell user.
For the border cell user for participating in distributed transmission, needs to provide to its business in real time and notify on base station
Channel state information, and participate in the multiuser distributed required information of transmission.However, for the user of border cell, band
Wide resource natively very lack and it is unstable, the information content of above-mentioned transmission crosses the expense that conference greatly increases reverse link, sternly
It can lead to the decline of real system capacity when weight.
Therefore, how rationally and the efficient scheduling for executing distributed transmission system be the present invention research contents.
Invention content
The purpose of the present invention is what is be achieved through the following technical solutions.
According to the embodiment of the present invention, propose that a kind of distributed transmission based on capacity boost dispatches system, the system
System includes：Scheduling processing unit, multiple service districts for participating in distributed transmission, multiple movements in each service district are eventually
End, distributed transmission region are made of M cell, cell AmInterior total mobile terminal number is Km, m=1,2...M；Wherein,
The scheduling processing unit determines that a service district provides cell A as business in distributed transmission region1,
Other cells in addition to providing cell except the business are as business supplementary cell, identifier Am；
The business provides cell A1By cell A1In all K (γth) a response mobile terminal, according to cell Am, m=
2...M DC Vector Groups clusters Ψm{DCm(k) | k=1 ..., K (γth), m=2...M；Then by the cluster Ψm{DCm(k)|
K=1 ..., K (γth) it is transferred to cell Am；
The business supplementary cell AmCluster Ψ is received for working asm{DCm(k) | k=1 ..., K (γth) after, estimate cell
AmThe most suitable distributed coding cluster Φ of middle mobile terminal k 'k′{DCn| n=1 ..., N }, and count each element DC in the clustern
Appear in Ψm{DCm(k) | k=1 ..., K (γth) in frequency zn；By all znValue addition obtains mobile terminal k ' and is carried to business
For cell A1Interference level Lk′；Compare the interference level Lk′With preset value ε, if interference level Lk′Less than preset value ε, then
By cell AmIt is instructed to mobile terminal k ' transmission responses；
The mobile terminal for receiving the response instruction provides cell reporting status information of channel to business.
According to the embodiment of the present invention, the mobile terminal includes response terminal determination unit, non-ideal suitable distribution
Formula encodes (DC) vectorial acquiring unit and reports transmission unit, wherein
The response terminal determination unit calculates cell A1In all mobile terminals (mobile terminal identifier be k, k=
1...K) respective scalarization signal-to-noise ratio (SNR) value, and by the scalarization SNR and response lag γthCompare, determines the mark
Quantify SNR value and is more than response lag γthMobile terminal k；
The vectorial acquiring unit of non-ideal suitable distributed coding (DC) is for obtaining cell AmIt is non-ideal be suitble to point
Cloth encodes (DC) vector DCm(k), m=2...M, k=1...K；
The scalarization SNR value is more than response lag γthMobile terminal k report transmission unit to business provide cell
A1Reporting status information of channel.
According to the embodiment of the present invention, the vectorial acquiring unit of non-ideal suitable distributed coding (DC) obtains cell
AmNon-ideal suitable distributed coding (DC) vector specifically include it is as follows：
It obtains the business and cell A is provided1Mobile terminal k relative to distributed transmission cell Am, m=2...M, point
Cloth transmission interference SNR vectorsIt is describedFor：It is cell A1With movement
Channel fading coefficient matrix between terminal k,For cell AmChannel fading coefficient matrix between mobile terminal k, wjIt is
Business provides cell A1The distributed coding vector used, P is average transmission power, N0It is noise power, w(i)It is assisted for business
Any default distributed coding vector that cell uses；
Each SNR in the distributed transmission interference SNR vectors of gained is risen into arrangement by value size, q points before taking
The identifier of the corresponding distributed coding vectors of cloth transmission interference SNR is the mobile terminal k according to cell AmDC vector.
The distributed transmission based on capacity boost of the present invention dispatches system, is provided in cell to snr value height in business
Reporting channel information is carried out in the mobile terminal of response lag, is less than the movement of predetermined value to interference level in business supplementary cell
Terminal carries out reporting channel information, can substantially reduce the letter of reverse transfer in the case where bandwidth resources lack and is unstable
Breath amount, lifting system capacity increase the efficiency that border cell user participates in distributed transmission.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, 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.In the accompanying drawings：
Attached drawing 1 is shown to be shown according to the distributed transmission scheduling system structure based on capacity boost of embodiment of the present invention
It is intended to.
Specific implementation mode
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to be best understood from the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened completely is communicated to those skilled in the art.
According to the embodiment of the present invention, propose that a kind of distributed transmission based on capacity boost dispatches system, such as attached drawing 1
It is described, the system comprises：Scheduling processing unit, is located in each service district multiple service districts for participating in distributed transmission
Multiple mobile terminals, distributed transmission region is made of M cell, cell AmInterior total mobile terminal number is Km, m=1,
2...M；The mobile terminal include response terminal determination unit, the vectorial acquiring unit of non-ideal suitable distributed coding (DC),
And report transmission unit, wherein
The scheduling processing unit determines that a service district provides cell A as business in distributed transmission region1,
Other cells in addition to providing cell except the business are as business supplementary cell, identifier Am；Wherein, in different scheduling
Cell in distributed transmission region is selected as business and provides cell by time point in turn；
The response terminal determination unit calculates cell A1In all mobile terminals (mobile terminal identifier be k, k=
1...K) respective scalarization signal-to-noise ratio (SNR) value, and by the scalarization SNR and response lag γthCompare, determines the mark
Quantify SNR value and is more than response lag γthMobile terminal k, the γthTake positive integer；The non-ideal suitable distributed coding
(DC) vectorial acquiring unit is for obtaining cell AmNon-ideal suitable distributed coding (DC) vector DCm(k), m=2...M, k
=1...K；The scalarization SNR value is more than response lag γthMobile terminal k report transmission unit to business provide cell
A1Reporting status information of channel；The distributed coding may be, but not limited to, Adaptive Modulation and Coding, based on coding cluster
Distributed coding, wave beam forming coding etc.；
The business provides cell A1By cell A1In all K (γth) a response mobile terminal, according to cell Am, m=
2...M DC Vector Groups clusters Ψm{DCm(k) | k=1 ..., K (γth), m=2...M；Then by the cluster Ψm{DCm(k)|
K=1 ..., K (γth) it is transferred to cell Am；
The business supplementary cell AmCluster Ψ is received for working asm{DCm(k) | k=1 ..., K (γth) after, estimate cell
AmThe most suitable distributed coding cluster Φ of middle mobile terminal k 'k′{DCn| n=1 ..., N }, and count each element DC in the clusternGo out
Present Ψm{DCm(k) | k=1 ..., K (γth) in frequency zn；By all znValue addition obtains mobile terminal k ' and is carried to business
For cell A1Interference level Lk′；Compare the interference level Lk′With preset value ε, if interference level Lk′Less than preset value ε, then
By cell AmIt is instructed to mobile terminal k ' transmission responses；
The mobile terminal for receiving the response instruction reports transmission unit to provide cell reporting channel to business
Status information；The channel state information may include, but be not limited to, such as channel quality instruction and encoder matrix instruction etc..
According to the embodiment of the present invention, the cell A1In all K (γth) a response mobile terminal is according to cell Am, m
The DC vectors of=2...M, the cell A is given by the response mobile terminal reporting1, and by the cell A1By DC vectors
Group cluster Ψm{DCm(k) | k=1 ..., K (γth), m=2...M is transferred to cell Am；
Wherein, cell A1The non-ideal suitable distributed coding of any response mobile terminal in all response mobile terminals
(DC) vectorial acquiring unit obtains cell AmNon-ideal suitable distributed coding (DC) vector specifically include it is as follows：
It obtains the business and cell A is provided1Mobile terminal k relative to distributed transmission cell Am, m=2...M, point
Cloth transmission interference SNR vectorsIt is describedFor：It is cell A1With movement
Channel fading coefficient matrix between terminal k,For cell AmChannel fading coefficient matrix between mobile terminal k, wjIt is
Business provides cell A1The distributed coding vector used, P is average transmission power, N0It is noise power, w(i)It is assisted for business
Any default distributed coding vector that cell uses；
Each SNR in the distributed transmission interference SNR vectors of gained is risen into arrangement by value size, q points before taking
The identifier of the corresponding distributed coding vectors of cloth transmission interference SNR is the mobile terminal k according to cell AmDC vector.
According to the embodiment of the present invention, the business supplementary cell estimation cell AmMiddle mobile terminal k's ' is most suitable for dividing
Cloth encodes cluster Φk′{DCn| n=1 ..., N } it specifically includes：
Obtain represent distributed coding that the previous scheduling time point of each distributed coding vector and mobile terminal k ' uses to
Value o (w (t-1), w of non-correlation between amount(i))；Wherein, o (w (t-1), w(i))=| w (t-1)Hw(i)|2
()HIndicate that the conjugate transposition of vector, w (t-1) are DC of the mobile terminal in a upper scheduled time point, w (i) is to compile
Distributed coding vector in code cluster；
Change the distributed coding vector in coding cluster, the non-correlation value of gained is declined into arrangement by value size；
Take identifier of the distributed coding vector corresponding to the vector top n element in encoding cluster as mobile terminal
The most suitable distributed coding cluster of k '.
According to the embodiment of the present invention, the mobile terminal k ' provides business the interference level L of cell A1k′For：
znIt is the most suitable DC clusters Φ of mobile terminal k 'k′{DCn| n=1 ..., N } in each element DCnAppear in DC clusters Ψm
{DCm(k) | k=1 ..., K (γth) in the frequency, N is the number that mobile terminal is most suitable for DC cluster interior elements.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention answers the protection model with claim
Subject to enclosing.
Claims (2)
1. a kind of distributed transmission based on capacity boost dispatches system, the system comprises：Scheduling processing unit, multiple participations
The service district of distributed transmission, multiple mobile terminals in each service district, distributed transmission region is by M cell group
At total mobile terminal number is K in each cellm, m=1,2...M；Wherein,
The scheduling processing unit determines that a service district provides cell A as business in distributed transmission region1, will remove
The business provides other cells except cell as business supplementary cell, identifier Am；
The business provides cell A1By cell A1In all K (γth) a response mobile terminal, according to cell Am, m=2...M's
DC Vector Groups clusters Ψm{DCm(k) | k=1 ..., K (γth), m=2...M；Then by the cluster Ψm{DCm(k) | k=
1 ..., K (γth) it is transferred to cell Am；
The business supplementary cell AmCluster Ψ is received for working asm{DCm(k) | k=1 ..., K (γth) after, estimate cell AmIn
The most suitable distributed coding cluster Φ of mobile terminal k 'k′{DCn| n=1 ..., N }, n is positive integer, and counts each member in the cluster
Plain DCnAppear in Ψm{DCm(k) | k=1 ..., K (γth) in frequency zn；By all znIt is right that value addition obtains mobile terminal k '
Business provides cell A1Interference level Lk′；Compare the interference level Lk′With preset value ε, if interference level Lk′Less than default
Value ε, then by cell AmIt is instructed to mobile terminal k ' transmission responses；
The mobile terminal for receiving the response instruction provides cell reporting status information of channel to business.
2. a kind of the system as claimed in claim 1, the mobile terminal includes response terminal determination unit, non-ideal is suitble to point
Cloth encodes (DC) vectorial acquiring unit and reports transmission unit, wherein
The response terminal determination unit calculates cell A1In all mobile terminals, mobile terminal identifier be k, k=1...K,
Respective scalarization signal-to-noise ratio (SNR) value, and by the scalarization SNR and response lag γthCompare, determines the scalarization
SNR value is more than response lag γthMobile terminal k；
The vectorial acquiring unit of non-ideal suitable distributed coding (DC) is for obtaining cell AmNon-ideal suitable distributed compile
Code (DC) vector DCm(k), m=2...M, k=1...K；
The scalarization SNR value is more than response lag γthMobile terminal k report the transmission unit to provide cell A to business1On
It notifies channel state information.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800578A (en) * | 2010-01-08 | 2010-08-11 | 西安电子科技大学 | Method for reducing downlink multipoint cooperation implicate feedback overhead |
| CN102440054A (en) * | 2009-05-22 | 2012-05-02 | 高通股份有限公司 | Methods, apparatuses and computer program products for distributed scheduling to facilitate interference management |
| CN104661315A (en) * | 2013-11-25 | 2015-05-27 | 中兴通讯股份有限公司 | Method and user equipment for submitting buffering-state reports |
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| KR101066326B1 (en) * | 2008-04-04 | 2011-09-20 | 서강대학교산학협력단 | Scheduling apparatus and method in distributed antenna systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102440054A (en) * | 2009-05-22 | 2012-05-02 | 高通股份有限公司 | Methods, apparatuses and computer program products for distributed scheduling to facilitate interference management |
| CN101800578A (en) * | 2010-01-08 | 2010-08-11 | 西安电子科技大学 | Method for reducing downlink multipoint cooperation implicate feedback overhead |
| CN104661315A (en) * | 2013-11-25 | 2015-05-27 | 中兴通讯股份有限公司 | Method and user equipment for submitting buffering-state reports |
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