CN105898758B - A jamming coordination method based on jamming protection area - Google Patents

A jamming coordination method based on jamming protection area Download PDF

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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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base station
user
interference
interference protection
radius
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CN105898758A (en
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许方敏
陈宇杨
章坚武
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Shenzhen Xinzhen Intelligent Electronics Co ltd
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Hangzhou Electronic Science and Technology University
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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
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

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

A kind of interference synergic method based on interference protection region
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)

1.一种基于干扰保护区域的干扰协同方法，其特征在于包括如下步骤：1. a kind of interference coordination method based on interference protection area is characterized in that comprising the steps: 步骤1、对每一个需要基站服务的用户，根据用户覆盖概率P大于门限值β来计算用户的干扰保护半径r0，Step 1. For each user who needs the base station service, calculate the user's interference protection radius r 0 according to the user coverage probability P greater than the threshold β, r0＝y-1(β)； 公式(1)r 0 =y -1 (β); formula (1) 其中：Pm和Pf分别为宏基站的发射功率和小型基站的发射功率，r1为用户与其服务的宏基站之间的距离，λ为干扰的小型基站的密度，σ2为噪声功率，T为信干噪比门限，β为系统要求的覆盖概率门限值；θ为小型基站路径损耗指数；α为宏基站路径损耗指数；Where: P m and P f are the transmit power of the macro base station and the transmit power of the small base station, respectively, r 1 is the distance between the user and the macro base station it serves, λ is the density of interfering small base stations, σ 2 is the noise power, T is the signal-to-interference noise ratio threshold, β is the coverage probability threshold required by the system; θ is the path loss index of the small base station; α is the path loss index of the macro base station; 步骤2、以用户为中心，干扰保护半径为半径的圆形区域为用户的干扰保护区域；Step 2. Taking the user as the center, the circular area with the interference protection radius as the radius is the user's interference protection area; 步骤3、将宏基站和所有小型基站的可用无线资源集合记为Ω，如果当前用户干扰保护区域内部的基站已占用的无线资源记为R，其中，则当前用户的可用无线资源只能从无线资源集合Ω\R中选取；如果当前用户已占用的无线资源记为S，其中，则当前用户干扰保护区域内部的基站的可用无线资源只能从无线资源集合Ω\S中选取；即当前用户的干扰保护区域内部的小型基站不能与当前用户共享无线资源。Step 3: Denote the set of available radio resources of the macro base station and all small base stations as Ω, if the current user interferes with the radio resource occupied by the base station inside the protection area, denote R, where, Then the available wireless resources of the current user can only be selected from the wireless resource set Ω\R; if the wireless resources occupied by the current user are denoted as S, where, Then the available radio resources of the base station in the current user's interference protection area can only be selected from the radio resource set Ω\S; that is, the small base station in the current user's interference protection area cannot share radio resources with the current user. 2.根据权利要求1所述的方法，其中步骤1中所述的噪声功率σ2，在干扰受限的系统中取0。2 . The method of claim 1 , wherein the noise power σ 2 in step 1 is 0 in an interference-limited system. 3 .
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