CN105898758B - A kind of interference synergic method based on interference protection region - Google Patents
A kind of interference synergic method based on interference protection region Download PDFInfo
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- CN105898758B CN105898758B CN201610325207.5A CN201610325207A CN105898758B CN 105898758 B CN105898758 B CN 105898758B CN 201610325207 A CN201610325207 A CN 201610325207A CN 105898758 B CN105898758 B CN 105898758B
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- 238000000034 method Methods 0.000 title claims abstract description 16
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- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000010295 mobile communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013468 resource allocation Methods 0.000 description 2
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Classifications
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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
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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
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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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
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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Abstract
The invention discloses a kind of interference synergic methods based on interference protection region.The user that the present invention includes the following steps: step 1, base station is needed to service to each is greater than threshold value according to user's cover probability P to calculate the interference protection radius r of user0；Step 2, customer-centric, interference protection radius are that the border circular areas of radius is the interference protection region of user；The usable radio resources set of macro base station and all small base stations is denoted as Ω by step 3, and the radio resource that the base station inside active user's interference protection region has occupied is denoted as R, whereinThen the usable radio resources of active user can only from set of radio resources Ω choose in R, i.e., the small base station inside the interference protection region of active user cannot share radio resource with the main serving BS of active user.The present invention can effectively inhibit co-channel interference, improve the availability of frequency spectrum, improve system cover probability；The performance of user is improved simultaneously.
Description
Technical field
The present invention relates to field of communication technology, in particular to the interference synergic method of a kind of wireless isomorphism or heterogeneous network.
Its multiple access technique can be frequency division multiple access (Frequency Division Multiple Access:FDMA), orthogonal frequency
Divide multiple access technologies such as multiple access (Orthogonal Frequency Division Multiple Access:OFDMA).
Background technique
In recent years, mobile communications industry is faced with the opportunity significantly developed, and forth generation (4G) system is in the world
Commercialization is gradually obtained, the 5th generation (5G) mobile communication technology also obtains each research tissue, mobile communication carrier, International standardization
The attention of tissue.It obtains employment from the point of view of the vision of bound pair 5G, 5G is by the availability of frequency spectrum and efficiency with superelevation, in transmission rate and money
Source utilization rate etc. improves a magnitude or higher, wireless coverage performance, propagation delay time, system safety compared with 4G mobile communication
It will also be significantly improved with user experience.In order to realize the vision and target of 5G, 5G, will be using more in terms of wireless network
Flexibly, the more intelligent network architecture and networking technology.Wherein, increase various types of base stations on the basis of original macrocellular
Super-intensive heterogeneous network, can effectively improve network capacity, increase system cover probability, have become future mobile communications
One of developing direction of System Network Architecture.In intensive heterogeneous network, the densification of network makes network node more from terminal
Closely, the promotion of power efficiency and spectrum efficiency is brought.But the mode of this shared frequency spectrum causes each node with covering
Between interference problem, especially macro base station is to the big function of the interference of user's downlink reception in small base station and macro base station edge
Interference of the rate terminal user to neighbouring small base station.These interference bring performance damages how are solved, is one and needs deeply
The major issue of research.Interference synergic is one of the effective measures for inhibiting interference.
Therefore, in the present invention, a kind of interference synergic method of customer-centric is proposed.
Summary of the invention
It is an object of the invention to propose a kind of interference synergic method based on interference protection region, wherein carrying out interference association
Same radio resource includes: the one or more dimensions radio resource such as frequency, time slot, space.This method can be according to locating for user
Communication environment, it is dynamic that radio resource is inhibited to share bring interference problem.
The technical solution adopted by the present invention to solve the technical problems includes the following steps:
Step 1, the user for needing base station to service to each are greater than threshold value according to user's cover probability P to calculate use
The interference protection radius r at family0,
r0=y-1(β)；Formula (1)
Wherein: PmAnd PfThe respectively transmission power of the transmission power of macro base station and small base station, r1It is serviced for user with it
The distance between macro base station, λ is the density of the small base station of interference, σ2For noise power, T is Signal to Interference plus Noise Ratio thresholding, and β is to be
The cover probability threshold value that system requires；θ is small base station path loss index；α is macro base station path loss index；
Step 2, customer-centric, interference protection radius are that the border circular areas of radius is the interference protection region of user；
The usable radio resources set of macro base station and all small base stations is denoted as Ω by step 3, if active user interferes
The radio resource that base station inside protection zone has occupied is denoted as R, whereinThe then usable radio resources of active user
Can only from set of radio resources Ω choose in R.If the radio resource that active user has occupied is denoted as S, whereinThen
The usable radio resources of base station inside active user's interference protection region can only from set of radio resources Ω choose in S.Work as
Small base station inside the interference protection region of preceding user cannot share radio resource with active user.
Noise power σ described in step 12, 0 is taken in interference-limited system.
The small-sized base station is also possible to macro base station.
The present invention has the beneficial effect that:
Base station type, transmission power in the present invention can be the same or different, and the coverage area of base station, which can be, appoints
The area of coverage of what shape, including cellular cell.Also, threshold T, the cover probability of system require β can be according to system reality
Demand determines that the threshold value of each user can be the same or different.
The present invention can effectively inhibit co-channel interference, improve the availability of frequency spectrum, improve system cover probability；Use is improved simultaneously
The performance at family.
Detailed description of the invention
Fig. 1 is one embodiment of the invention.
Specifically it is macro base station-Home eNodeB two-tier network system model, has 1 macro base station random with several in figure
The Home eNodeB of distribution, black soft dot indicate that Home eNodeB, two gray areas respectively indicate macro user 1 and macro user 2
Interference protection region.
Specific embodiment
Basic conception according to the present invention, when for user's distributing radio resource, it is first determined the interference protection area of user
Then the base station in interference protection region is found out in domain, allow these base station cooperative transmissions to inhibit co-channel interference.According to the present invention
A kind of interference synergic method based on interference protection region, the specific steps are as follows:
Step 1: the user for needing base station to service each is greater than threshold value according to user's cover probability P to calculate use
The interference protection radius r at family0, i.e. the interference protection region half for meeting cover probability requirement of P (SINR > T) > β calculating user
Diameter r0, wherein SINR by user service base station transmission power Pm, user and its serving BS distance r1, interference base station it is close
The transmission power of degree and interference base station determines.
r0=y-1(β)；Formula (1)
Wherein: PmAnd PfThe respectively transmission power of the transmission power of macro base station and small base station, r1It is serviced for user with it
The distance between macro base station, λ is the density of the small base station of interference, σ2For noise power, T is Signal to Interference plus Noise Ratio thresholding, and β is to be
The cover probability threshold value that system requires.θFor small base station path loss index；αFor macro base station path loss index；
Step 2: customer-centric, r0The interference protection region of user is found out for radius.Wherein, interference protection region by
The Signal to Interference plus Noise Ratio thresholding T of system, the cover probability of system require β, user serving BS transmission power Pm, user takes with it
The distance r of business base station1, the density of interference base station and the transmission power synthesis of interference base station determine.
Step 3: serving BS be user distribute Ω radio resource in R.
Need to illustrate: when only needing to be allocated frequency resource, the present invention is exactly a kind of dynamic frequency distribution side
Case, Ω and R are reduced to frequency sets.When only needing to plan time slot, the present invention is exactly a kind of time slot allocation scheme, Ω
Time slot sets are reduced to R.I.e. the present invention is that the base station in the interference protection region of user carries out interference synergic.
Base station type, transmission power in the present invention can be the same or different, and the coverage area of base station, which can be, appoints
The area of coverage of what shape, including cellular cell.Also, threshold T, the cover probability of system require β can be according to system reality
Demand determines that the threshold value of each user can be the same or different.
Embodiment 1:
Interference protection area is based on reference to the accompanying drawings and in conjunction with the preferred embodiment of the present invention to describe one kind of the invention
The interference synergic method in domain.
Multiplexing distribution only is carried out to frequency resource in the present embodiment, Ω and R is reduced to frequency sets at this time, and Ω is entire system
The usable frequency set of system.
Referring to Fig. 1, the interference protection region partitioning method of the macro user of macro base station-Home eNodeB double layer network in the present invention
And frequency resource allocation method.Interference protection region and the nothing of the user of random layer can be designed according to the proposed method
Line resource allocation, to solve the problems, such as the AF panel of multilayer heterogeneous network.
Step 1: the interference protection zone radius for meeting cover probability requirement of macro user is calculated according to P (SINR > T) > β
r0=y-1(β), whereinPmAnd PfThe respectively hair of macro base station
Penetrate the transmission power of power and Home eNodeB, r1For the distance between the macro base station that user services with it, λ is the small-sized base of interference
The density stood, σ2For noise power, T is Signal to Interference plus Noise Ratio thresholding, and β is the cover probability requirement of system.θFor Home eNodeB path damage
Consume index；αFor macro base station path loss index；
Step 2: customer-centric, r0The interference protection region of user is found out for radius.Wherein, interference protection region by
The Signal to Interference plus Noise Ratio thresholding T of system, the cover probability of system require β, user serving BS transmission power Pm, user takes with it
The distance r of business base station1, the density of interference base station and the transmission power synthesis of interference base station determine.The interference protection of different user
Area size may be different.For example, the interference protection region of macro user 2 is significantly greater than the interference protection region of macro user 1.
Step 3: Home eNodeB 1 (fBS1) is in the interference protection region of macro user 1, and therefore, macro base station and fBS1 are carried out
Interference synergic.
Step 4: macro base station be macro user 1 distribute Ω radio resource in R, R indicates the wireless money that fBS1 is occupied here
Source.
Base station type, transmission power in the present invention can be the same or different, and the coverage area of base station, which can be, appoints
The area of coverage of what shape, including cellular cell.Also, threshold T, the cover probability of system require β can be according to system reality
Demand determines that the threshold value of each user can be the same or different.
Claims (2)
1. a kind of interference synergic method based on interference protection region, it is characterised in that include the following steps:
Step 1, the user for needing base station to service to each are greater than threshold value according to user's cover probability P to calculate user's
Interference protection radius r0,
r0=y-1(β)；Formula (1)
Wherein: PmAnd PfThe respectively transmission power of the transmission power of macro base station and small base station, r1It services for user with it macro
The distance between base station, λ are the density of the small base station of interference, σ2For noise power, T is Signal to Interference plus Noise Ratio thresholding, and β wants for system
The cover probability threshold value asked；θ is small base station path loss index；α is macro base station path loss index；
Step 2, customer-centric, interference protection radius are that the border circular areas of radius is the interference protection region of user；
The usable radio resources set of macro base station and all small base stations is denoted as Ω by step 3, if active user's interference protection
The radio resource that base station inside region has occupied is denoted as R, whereinThen the usable radio resources of active user can only
From set of radio resources Ω choose in R；If the radio resource that active user has occupied is denoted as S, whereinIt is then current
The usable radio resources of base station inside user's interference protection region can only from set of radio resources Ω choose in S；It is i.e. current to use
Small base station inside the interference protection region at family cannot share radio resource with active user.
2. according to the method described in claim 1, wherein noise power σ described in step 12, taken in interference-limited system
0。
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Citations (3)
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| CN101827373A (en) * | 2010-03-02 | 2010-09-08 | 北京邮电大学 | Method and device for acquiring interference margins in OFDM system |
| CN103703806A (en) * | 2013-07-24 | 2014-04-02 | 华为技术有限公司 | Method, apparatus and system for spectrum resources frequency division multiplexing |
| CN103997745A (en) * | 2014-05-30 | 2014-08-20 | 北京邮电大学 | Method for self-organization of low power nodes in LTE-A heterogeneous network |
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| US9918324B2 (en) * | 2012-07-19 | 2018-03-13 | Samsung Electronics Co., Ltd. | Method and system for delivering system information to user equipment in region of co-channel interference |
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| CN101827373A (en) * | 2010-03-02 | 2010-09-08 | 北京邮电大学 | Method and device for acquiring interference margins in OFDM system |
| CN103703806A (en) * | 2013-07-24 | 2014-04-02 | 华为技术有限公司 | Method, apparatus and system for spectrum resources frequency division multiplexing |
| CN103997745A (en) * | 2014-05-30 | 2014-08-20 | 北京邮电大学 | Method for self-organization of low power nodes in LTE-A heterogeneous network |
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Effective date of registration: 20200305 Address after: 518000 Guangdong city of Shenzhen province Baoan District Fuyong street baishixia New Development Zone seventh Patentee after: Shenzhen Xinzhen Intelligent Electronics Co.,Ltd. Address before: 310027 No. 2 street, Xiasha Higher Education Zone, Hangzhou, Zhejiang Patentee before: Hangzhou Electronic Science and Technology Univ |