CN108810907A - A kind of merging method of virtual subdistrict, device and network system - Google Patents

A kind of merging method of virtual subdistrict, device and network system Download PDF

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Publication number
CN108810907A
CN108810907A CN201710284143.3A CN201710284143A CN108810907A CN 108810907 A CN108810907 A CN 108810907A CN 201710284143 A CN201710284143 A CN 201710284143A CN 108810907 A CN108810907 A CN 108810907A
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virtual subdistrict
cell
rrh
virtual
subdistrict cell
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CN108810907B (en
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刘珊
刘琪
陈露
夏海轮
陈祎
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

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

Abstract

The embodiment provides a kind of merging method of virtual subdistrict, device and network systems, it is related to network communication technology field, strong jamming will be will produce between the virtual subdistrict being overlapped in the prior art by solving, so that the rate of the signal transmission between RRH and user reduces, the problem for causing the user rate of the whole network relatively low.This method includes dividing the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area；When the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 meet merging condition, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region are merged into new virtual subdistrict Mu-Cell.The embodiment of the present invention is for providing a kind of merging method of the virtual subdistrict of overlapping.

Description

A kind of merging method of virtual subdistrict, device and network system
Technical field
The present invention relates to a kind of network communication technology field more particularly to merging method of virtual subdistrict, device and networks System.
Background technology
Data traffic demand towards the year two thousand twenty and following thousands of times of growths, the 5th third-generation mobile communication technology (full name in English： 5th-Generation, referred to as：5G) system, which will be built, accesses with extensive antenna, super-intensive networking, entire spectrum as core Technical system on；In hot spot high power capacity scene, power system capacity is improved by increasing the quantity of low power nodes, makes low work( Rate node density may reach present base station deployment density ten times are even higher, to form super-intensive network.
In order to reduce the interference under super-intensive on-premise network between communication cell, the virtualization of customer-centric can be passed through Cellular technology solves the problems, such as this；Wherein, cell (full name in English is virtualized：Virtual Cell) technology refer to break it is virtual small Area boundary limits, and provides the wireless access of non-boundary, establishes covering around user, provides service, virtual subdistrict with user's Mobile and Network status quickly updates；By forming virtual subdistrict, edge customer can be eliminated, while ensureing virtual subdistrict and end Always there is preferable link-quality between end so that user moves anyway in super-intensive deployment region, can obtain Consistent high quality-of-service (full name in English：Quality of Service, referred to as：QoS)/Quality of experience (full name in English： Quality of Experience, referred to as：QoE)；Therefore the virtualization cellular technology of customer-centric is increasingly by people Concern.
However, being found in the research to the virtualization cellular technology of customer-centric, super-intensive cooperation or cloud are wireless It is electrically accessed network (full name in English：Cooperative or Cloud Radio Access Network, referred to as：C-RAN under) not One or more identical remote radio head (full name in English may be selected with user：Remote Radio Head, referred to as： RRH), it is overlapped so as to cause virtual subdistrict, strong jamming will be will produce between the virtual subdistrict of overlapping so that between RRH and user Signal transmission rate reduce, cause the user rate of the whole network relatively low.
It can be seen from the above, strong jamming will be will produce between the virtual subdistrict being overlapped in the prior art so that RRH and user it Between signal transmission rate reduce, cause the user rate of the whole network relatively low.
Invention content
The embodiment of the present invention provides a kind of merging method of virtual subdistrict, device and network system, solves existing skill Strong jamming will be will produce between the virtual subdistrict being overlapped in art so that the rate of the signal transmission between RRH and user reduces, and leads The problem for causing the user rate of the whole network relatively low.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
First aspect, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, including：
Divide the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area；
When the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 meet merging condition, will weigh Meet in folded region merging condition the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 be merged into it is new virtual small Area Mu-Cell；
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are belonging respectively at least two virtual subdistrict One in Cell, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is different, the first virtual subdistrict Cell-1 At least 1 the first UE provides service, and the second virtual subdistrict Cell-2 is at least 1 the 2nd UE and provides service, and new is virtual small Area Mu-Cell is at least 1 the first UE provides service and at least 1 the 2nd UE provides service, and virtual subdistrict Cell is extremely Include a remote radio head RRH less.
Preferably, before determining the interior overlapping region being made of at least two virtual subdistrict Cell of predeterminable area, further include：
The Reference Signal Received Power RSRP values that UE is measured by the remote radio head RRH-1 in predeterminable area are obtained, Middle remote radio head RRH-1 is any one remote radio head RRH in predeterminable area；
Compare the size of RSRP values and RSRP threshold values；
When RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, is formed as the virtual of UE services Cell Cell.
Preferably, the merging condition, including：
It is pre- that the region of first virtual subdistrict Cell-1 coverings and the region of the second virtual subdistrict Cell-2 coverings meet first If it is default that the UE sums of the condition of merging, the first virtual subdistrict Cell-1 and the UE sums of the second virtual subdistrict Cell-2 meet second Merging condition, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet third and preset merging condition；
The the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that meet merging condition in overlapping region are merged The virtual subdistrict Mu-Cell of Cheng Xin, including：
When the region of the first virtual subdistrict Cell-1 coverings and the region of the second virtual subdistrict Cell-2 coverings meet first The UE sums of preset condition, the UE sums of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet the second default conjunction And condition and deposit the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet third preset merging condition when, will weigh The first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is merged into new virtual subdistrict Mu-Cell in folded region.
Preferably, the first default merging condition includes：
RRH numbers shared first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are more than 0.
Preferably, the second default merging condition includes：
The UE sums of first virtual subdistrict are less than or equal to the first pre-set user threshold value, and the UE sums of the second virtual subdistrict are small In equal to the second pre-set user threshold value.
Preferably, the default merging condition of third includes：The antenna sum of the RRH of first virtual subdistrict and the first virtual subdistrict The ratio of antenna sum of UE be more than or equal to 1, and the UE of the antenna sum and the second virtual subdistrict of the RRH of the second virtual subdistrict Antenna sum ratio be more than or equal to 1.
Preferably, the first virtual subdistrict Cell-1 and the second virtual subdistrict of merging condition will be met in overlapping region Cell-2 is merged into new virtual subdistrict Mu-Cell, including：
The first virtual subdistrict Cell-1 different in overlapping region is obtained to share from the second different virtual subdistrict Cell-2 RRH numbers；
To the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 share RRH numbers according to from Small sequence is arrived greatly to be ranked up；
According to the sequence of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 RRH numbers shared, by first Virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are merged into new virtual subdistrict Mu-Cell.
Preferably, this method further includes：
It is right when the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 are unsatisfactory for merging condition Whether there is the same shared RRH than third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4；Wherein, third is virtual Cell Cell-3 and the 4th virtual subdistrict Cell-4 belongs at least two virtual subdistrict Cell and new virtual subdistrict Mu-Cell In one, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 are different.
Preferably, the first virtual subdistrict Cell-1 and the second virtual subdistrict of merging condition will be met in overlapping region After Cell-2 is merged into new virtual subdistrict Mu-Cell, further include：
When third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 are unsatisfactory for merging condition, comparison third is virtual Whether cell Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, wherein third virtual subdistrict Cell-3 Belong to one at least two virtual subdistrict Cell and new virtual subdistrict Mu-Cell with the 4th virtual subdistrict Cell-4, And third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
Preferably, whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has same shared RRH includes：
Obtain RRH and the 4th virtual subdistrict Cell-4 packets that the third virtual subdistrict Cell-3 in overlapping region includes The RRH contained；
Whether RRH and the 4th virtual subdistrict Cell-4 RRH for including that comparison third virtual subdistrict Cell-3 includes have The same shared RRH；
When third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, according to RRH Biasing link is allocated the same shared RRH.
Preferably, RRH biasings link includes：
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is more than or equal to 1, and the 4th virtual subdistrict Cell-4 After removing the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the 4th virtual subdistrict Cell-4's The ratio of the antenna sum of UE is more than or equal to 1, when the summation of the RSRP values of third virtual subdistrict Cell-3 is virtual more than the 4th small The same shared RRH is incorporated into third virtual subdistrict Cell-3 by the summation of the RSRP values of area Cell-4；
Or
When the summation of the RSRP values of third virtual subdistrict Cell-3 is total less than the RSRP values of the 4th virtual subdistrict Cell-4 With the same shared RRH is incorporated into the 4th virtual subdistrict Cell-4.
Preferably, RRH biasings link includes：
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is more than or equal to 1, and the 4th virtual subdistrict Cell-4 After removing the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the 4th virtual subdistrict Cell-4's The ratio of the antenna sum of UE is less than 1, and the same shared RRH is incorporated into the 4th virtual subdistrict Cell-4；
Or
After determining that third virtual subdistrict Cell-3 removes the same shared RRH, the RRH's of third virtual subdistrict Cell-3 Antenna sum and the ratio of the antenna sum of the UE of third virtual subdistrict Cell-3 are less than 1, and the 4th virtual subdistrict Cell-4 is removed After removing the same shared RRH, the UE of the antenna sum and the 4th virtual subdistrict Cell-4 of the RRH of the 4th virtual subdistrict Cell-4 Antenna sum ratio be more than or equal to 1, the same shared RRH is incorporated into third virtual subdistrict Cell-3.
Preferably, RRH biasings link includes：
Obtain the RSRP values that UE is measured by silent RRH in third virtual subdistrict Cell-3；
The RSRP values that UE is measured by silent RRH in the 4th virtual subdistrict Cell-4 are obtained, wherein silent RRH packets It includes：The RRH not selected by third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 in overlapping region；
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is less than the 1, the 4th virtual subdistrict Cell-4 and removes together After one shared RRH, the day of the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the UE of the 4th virtual subdistrict Cell-4 The ratio of line sum is less than 1, and UE all in the Cell-3 of third virtual subdistrict passes through the total of the silent RRH RSRP values measured It, will when with more than or equal to UE all in the 4th virtual subdistrict Cell-4 by the summations of the silent RRH RSRP values measured The RRH of the maximum silence of reference value of RSRP values is incorporated into third virtual subdistrict Cell-3, and the same shared RRH is incorporated into 4th virtual subdistrict Cell-4；
Or
All UE are less than the 4th void by the summation of the silent RRH RSRP values measured in the Cell-3 of third virtual subdistrict It is when intending summations of the UE all in cell Cell-4 by the silent RRH RSRP values measured, the reference value of RSRP values is maximum Silent RRH be incorporated into the 4th virtual subdistrict Cell-4, the same shared RRH is incorporated into third virtual subdistrict Cell- 3。
Preferably, this method further includes：
When third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 does not have the same shared RRH, according to Precoding algorithms carry out the whole network UE rates to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of overlapping region It optimizes.
Preferably, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, After being allocated to the same shared RRH according to RRH biasings link, further include：
The third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of overlapping region are carried out according to precoding algorithms The optimization of the whole network UE rates.
Preferably, the third virtual subdistrict Cell-3 according to precoding algorithms to overlapping region and the 4th virtual subdistrict The optimization that Cell-4 carries out the whole network UE rates includes：
Obtain precoding direction vector Ws of the UE in the first multi-user virtual cell；
Obtain the initial value D0 of the power control factor of any one UE the first multi-user virtual cell Nei；
Obtain the shared channel matrix L of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell；
According to the shared channel matrix L of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell, The first calculation formula, the second calculation formula and third for constructing the diagonal vector maximization the whole network user rate of power calculate public affairs Formula；
The initial value D0 of power control factor is brought into and iteratively solves the initial of power control factor in third calculation formula Value D；
The initial value D of power control factor is brought into the second calculation formula, geometric programming solves Dq, wherein whenWhen, iteration stopping obtains diagonal matrix D=Dq；
It brings diagonal matrix D=Dq into first calculation formula, finds out the whole network maximum user rate；Wherein, first public affairs are calculated Formula includes：
Wherein, JK indicates the same of multi-user interference and the first multi-user virtual minizone in the first multi-user virtual minizone Frequency interferes, σk 2For the additive white Gaussian noise of user k；
Second calculation formula includes：
Wherein,
Third calculation formula includes：
gm,k'(D|Dq-1), q is the integer more than or equal to 1；
Wherein,For power control factor initial value；DqFor in iterative algorithm The current value of power control factor, Dq-1For the value at the preceding iteration moment of power control factor in iterative algorithm, R (Dq) it is power control Factor D processedqUnder the total rate of user；ε is the error amount of default, judgement user rate convergence；It is user k empty in multi-user Channel vector (including large scale channel vector and small scale channel vector) in quasi- cell m；It is small in multi-user virtual for user k Normalization precoding vectors in area m； For large scale channel vectors of the user k in multi-user virtual cell t.
Second aspect, the embodiment of the present invention provide a kind of merging device of virtual subdistrict, including：
Area division unit, for dividing the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area；
Processing unit, for when the void of the first virtual subdistrict Cell-1 and second in the overlapping region that area division unit divides When quasi- cell Cell-2 meets merging condition, the first virtual subdistrict Cell-1 and second of merging condition will be met in overlapping region Virtual subdistrict Cell-2 is merged into new virtual subdistrict Mu-Cell；
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are belonging respectively at least two virtual subdistrict One in Cell, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is different, the first virtual subdistrict Cell-1 At least 1 the first UE provides service, and the second virtual subdistrict Cell-2 is at least 1 the 2nd UE and provides service, and new is virtual small Area Mu-Cell is at least 1 the first UE provides service and at least 1 the 2nd UE provides service, and virtual subdistrict Cell is extremely Include a remote radio head RRH less.
Preferably, which further includes：Data capture unit；
Data capture unit, the reference signal measured by the remote radio head RRH-1 in predeterminable area for obtaining UE Power RSRP values are received, wherein remote radio head RRH-1 is any one remote radio head RRH in predeterminable area；
Processing unit, the size of RSRP values and RSRP threshold values specifically for comparing data capture unit acquisition；
Area division unit, specifically for when processing unit determines RSRP values >=RSRP threshold values, the first radio frequency is drawn Remote head RRH is repartitioned, and is formed as the virtual subdistrict Cell of UE services.
Preferably, processing unit is specifically used for when the first virtual subdistrict Cell-1 and the second virtual subdistrict in overlapping region When Cell-2 is unsatisfactory for merging condition, it is same whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have A shared RRH；Wherein, third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong at least two virtual subdistrict One in Cell and new virtual subdistrict Mu-Cell, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 It is different.
Preferably, processing unit is specifically used for when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is discontented When foot merges condition, it is same shared whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have RRH, wherein third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong at least two virtual subdistrict Cell, Yi Jixin Virtual subdistrict Mu-Cell in one, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 are different.
Preferably,
Data capture unit is additionally operable to obtain RRH, Yi Ji that the third virtual subdistrict Cell-3 in overlapping region includes The RRH that four virtual subdistrict Cell-4 include；
Processing unit, the third virtual subdistrict Cell-3 RRH that include obtained specifically for correction data acquiring unit with Whether the RRH that the 4th virtual subdistrict Cell-4 includes has the same shared RRH；
Area division unit is specifically used for when processing unit comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict When Cell-4 has the same shared RRH, the same shared RRH is allocated according to RRH biasings link.
Preferably, processing unit does not have specifically for working as third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 It is virtual to the third virtual subdistrict Cell-3 of overlapping region and the 4th small according to precoding algorithms when having the same shared RRH Area Cell-4 carries out the optimization of the whole network UE rates.
Preferably, processing unit is specifically used for biasing link to same shared according to RRH when area division unit After RRH is allocated, according to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell- of overlapping region 4 carry out the optimization of the whole network UE rates.
The third aspect, the embodiment of the present invention provide a kind of network system, including：The conjunction of UE, RRH, BBU, virtual subdistrict And device, MME, SGW, PGW and IMS；The merging device of wherein virtual subdistrict belongs to BBU.
Merging method, device and the network system of virtual subdistrict provided in an embodiment of the present invention, by dividing virtual subdistrict Overlapping region, due to may be simultaneously present multiple virtual subdistricts in overlapping region, and between virtual subdistrict and virtual subdistrict Strong jamming may be formed, it is therefore desirable to by the way that the first virtual subdistrict Cell-1 and of merging condition will be met in overlapping region Two virtual subdistrict Cell-2 are merged into new virtual subdistrict Mu-Cell, to be carried out to the virtual subdistrict for meeting merging condition Merge so that the strong jamming between original virtual subdistrict is eliminated, and is improved the rate of the signal transmission between RRH and user, is carried The high user rate of the whole network will will produce strong jamming between the virtual subdistrict being overlapped in the prior art to solve so that The rate of signal transmission between RRH and user reduces；Again since the same RRH may service multiple users simultaneously, to lead The problem for causing the user rate of the whole network relatively low.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow chart of the merging method for virtual subdistrict that the embodiment of the present invention provides；
Fig. 2-a- Fig. 2-d are a kind of another flow of the merging method for virtual subdistrict that the embodiment of the present invention provides Figure；
Fig. 3-a and Fig. 3-b are a kind of logical flow chart of the merging method for virtual subdistrict that the embodiment of the present invention provides；
Fig. 4-a- Fig. 4-e are that a kind of merging method for the virtual subdistrict of the present invention provided is merged void in practical applications The schematic diagram of quasi- cell；
Fig. 5 is a kind of structural schematic diagram of the merging device for virtual subdistrict that the embodiment of the present invention provides；
Fig. 6 is a kind of another structural schematic diagram of the merging device for virtual subdistrict that the embodiment of the present invention provides；
Fig. 7-a and Fig. 7-b are a kind of structural schematic diagram for network system that the embodiment of the present invention provides.
Reference numeral：
The merging device -10 of virtual subdistrict；
Area division unit -101；
Processing unit -102；
Data capture unit -103.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The technical solution that the embodiment of the present invention provides substantially the part that contributes to existing technology in other words, or The all or part of the technical solution can be realized by software program, hardware, firmware or its arbitrary combination.When using soft When part program is realized, can entirely or partly it realize in the form of a computer program product.The computer program product includes One or more computer instructions.When loading and execute on computers the computer instruction, entirely or partly generate according to Flow in the embodiment of the present invention or function.The computer can be all-purpose computer, special purpose computer, computer network or Other programmable devices.The computer instruction can store in a computer-readable storage medium, or can from a computer Read storage medium to another computer readable storage medium transmit, for example, the computer instruction can from a web-site, Computer, server or data center pass through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (digital Subscriber line, DSL)) mode or wireless (such as infrared, wireless, microwave etc.) mode be to another web-site, meter Calculation machine, server or data center's transmission.It is any available can be that computer can access for the computer readable storage medium Medium is either including data storage devices such as one or more usable mediums integrated server, data centers.Available Jie Matter can be magnetic medium (for example, floppy disk, disk, tape), optical medium (for example, digital video disk (digital video Disc, DVD)) or semiconductor medium (such as solid state disk (solid state drives, SSD)) etc..
Embodiment one, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, include as shown in Figure 1：
S101, the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area is divided.
S102, meet merging condition as the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 When, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region are merged into new Virtual subdistrict Mu-Cell.
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are belonging respectively at least two virtual subdistrict Cel In one, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are different, and the first virtual subdistrict Cell-1 is at least Service is provided for 1 the first UE, the second virtual subdistrict Cell-2 is at least 1 the 2nd UE and provides service, new virtual subdistrict Mu- For at least 1 the first UE provides service and at least 1 the 2nd UE provides service, virtual subdistrict Cell is included at least Cell One remote radio head RRH.
The merging method of virtual subdistrict provided in an embodiment of the present invention, by dividing the overlapping region of virtual subdistrict, due to It may be simultaneously present multiple virtual subdistricts in overlapping region, and may be formed between virtual subdistrict and virtual subdistrict capable and experienced It disturbs, it is therefore desirable to by the way that the first virtual subdistrict Cell-1 and the second virtual subdistrict of merging condition will be met in overlapping region Cell-2 is merged into new virtual subdistrict Mu-Cell, to be merged to the virtual subdistrict for meeting merging condition so that former Strong jamming between some virtual subdistricts is eliminated, and is improved the rate of the signal transmission between RRH and user, is improved the use of the whole network Family rate will will produce strong jamming between the virtual subdistrict being overlapped in the prior art so that between RRH and user to solve Signal transmission rate reduce；Again since the same RRH may service multiple users simultaneously, so as to cause user's speed of the whole network The relatively low problem of rate.
Embodiment two, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, are wrapped as shown in Fig. 2-a-Fig. 2-d It includes：
Scene one, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, include as shown in Fig. 2-a：
S1010, the Reference Signal Received Power RSRP that UE is measured by the remote radio head RRH-1 in predeterminable area is obtained Value, wherein remote radio head RRH-1 are any one remote radio head RRH in predeterminable area.
S1020, the size for comparing RSRP values and RSRP threshold values.
It should be noted that RSRP threshold values refer to the minimum RSRP of UE settings；Illustratively, as RSRP threshold values be- 130dBm, and UE is -100dBm by the RSRP values that RRH-a is measured, the RSRP values -100dBm measured at this time is more than RSRP thresholdings Value -130dBm, therefore the RRH-a can be as the RRH for providing service for UE；If UE is small by the RSRP values that RRH-b is measured When RSRP threshold values, UE is received by RRH-b at this time signal can not demodulate come therefore RRH-b cannot function as UE The RRH of service is provided.
S1030, when RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, be formed as UE service Virtual subdistrict Cell.
S1040, the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area is divided.
S1050, when the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 be unsatisfactory for merge item When part, whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have the same shared RRH；Wherein, Third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belongs at least two virtual subdistrict Cell, and newly virtual small One in area Mu-Cell, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
Preferably, the merging condition, including：
It is pre- that the region of first virtual subdistrict Cell-1 coverings and the region of the second virtual subdistrict Cell-2 coverings meet first If it is default that the UE sums of the condition of merging, the first virtual subdistrict Cell-1 and the UE sums of the second virtual subdistrict Cell-2 meet second Merging condition, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet third and preset merging condition；
The the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that meet merging condition in overlapping region are merged The virtual subdistrict Mu-Cell of Cheng Xin, including：
When the region of the first virtual subdistrict Cell-1 coverings and the region of the second virtual subdistrict Cell-2 coverings meet first The UE sums of preset condition, the UE sums of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet the second default conjunction And condition and deposit the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet third preset merging condition when, will weigh The first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is merged into new virtual subdistrict Mu-Cell in folded region.
Preferably, the first default merging condition includes：
RRH numbers shared first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are more than 0.
Preferably, the second default merging condition includes：
The UE sums of first virtual subdistrict are less than or equal to the first pre-set user threshold value, and the UE sums of the second virtual subdistrict are small In equal to the second pre-set user threshold value.
It should be noted that in actual application, the first pre-set user threshold value can be identical with the second predetermined threshold value It can be different.
Preferably, the default merging condition of third includes：The antenna sum of the RRH of first virtual subdistrict and the first virtual subdistrict The ratio of antenna sum of UE be more than or equal to 1, and the UE of the antenna sum and the second virtual subdistrict of the RRH of the second virtual subdistrict Antenna sum ratio be more than or equal to 1.
S1060, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 do not have the same shared RRH When, the whole network UE is carried out to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of overlapping region according to precoding algorithms The optimization of rate.
The merging method of virtual subdistrict provided in an embodiment of the present invention, by dividing the overlapping region of virtual subdistrict, due to It may be simultaneously present multiple virtual subdistricts in overlapping region, and may be formed between virtual subdistrict and virtual subdistrict capable and experienced It disturbs, when the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 is unsatisfactory for merging condition, weighs at this time There may be there is the case where overlapping between two virtual subdistricts due to being unsatisfactory for merging condition in folded region, it is therefore desirable to compare Whether third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, when third virtual subdistrict When Cell-3 and the 4th virtual subdistrict Cell-4 does not have the same shared RRH, in order to improve the speed of surfing the Internet of UE to most It is excellent；Therefore, it is also desirable to by optimizing to improve RRH and user to the virtual subdistrict after merging according to precoding algorithms Between signal transmission rate, improve the user rate of the whole network, solve between the virtual subdistrict being overlapped in the prior art Strong jamming will be will produce so that the problem of rate of the signal transmission between RRH and user reduces.
Scene two, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, include as shown in Fig. 2-b：
S1011, the Reference Signal Received Power RSRP that UE is measured by the remote radio head RRH-1 in predeterminable area is obtained Value, wherein remote radio head RRH-1 are any one remote radio head RRH in predeterminable area.
It should be noted that the ginseng that UE is measured by the remote radio head RRH-1 in predeterminable area in actual application It examines signal reception power RSRP values and includes at least the following two kinds situation：
One, the Reference Signal Received Power RSRP values that UE is measured by the remote radio head RRH-1 in predeterminable area, wherein Here UE be by measuring all RSRP values after, then in the size for comparing each RSRP values and RSRP threshold values, this Sample can the detailed RSRP values for measuring each RRH, it is more convenient to distribute RRH for UE.
Two, RSRP reference values are set, when UE there are multiple RRH to select, be ranked up according to RRH signals, find out RSRP values More than or equal to the RRH of RSRP threshold values, so as to shorten times of the UE by RRH measurement RSRP values is calculated.
S1021, the size for comparing RSRP values and RSRP threshold values.
S1031, when RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, be formed as UE service Virtual subdistrict Cell.
S1041, the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area is divided.
S1051, when the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 be unsatisfactory for merge item When part, whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have the same shared RRH；Wherein, Third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belongs at least two virtual subdistrict Cell, and newly virtual small One in area Mu-Cell, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
S1061, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, The same shared RRH is allocated according to RRH biasings link.
S1071, according to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell- of overlapping region 4 carry out the optimization of the whole network UE rates.
The merging method of virtual subdistrict provided in an embodiment of the present invention, by dividing the overlapping region of virtual subdistrict, due to It may be simultaneously present multiple virtual subdistricts in overlapping region, and may be formed between virtual subdistrict and virtual subdistrict capable and experienced It disturbs, when the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 is unsatisfactory for merging condition, weighs at this time There may be there is the case where overlapping between two virtual subdistricts due to being unsatisfactory for merging condition in folded region, it is therefore desirable to compare Whether third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, when third virtual subdistrict When Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, need to bias link to overlapping according to RRH RRH is redistributed；In order to improve the speed of surfing the Internet for distributing the UE of virtual subdistrict to optimal；Therefore, it is also desirable to pass through Optimize to improve the speed of the signal transmission between RRH and user to the virtual subdistrict after merging according to precoding algorithms Rate improves the user rate of the whole network, and strong jamming will be will produce between the virtual subdistrict being overlapped in the prior art by solving so that The problem of rate of signal transmission between RRH and user reduces.
Scene three, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, include as shown in fig. 2-c：
S1012, the Reference Signal Received Power RSRP that UE is measured by the remote radio head RRH-1 in predeterminable area is obtained Value, wherein remote radio head RRH-1 are any one remote radio head RRH in predeterminable area.
S1022, the size for comparing RSRP values and RSRP threshold values.
S1032, when RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, be formed as UE service Virtual subdistrict Cell.
S1042, the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area is divided.
S1052, meet merging condition as the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 When, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region are merged into new Virtual subdistrict Mu-Cell.
It should be noted that in actual application, need to repeat to merge the first virtual subdistrict Cell-1 and second Virtual subdistrict Cell-2, after forming new virtual subdistrict Mu-Cell, new virtual subdistrict Mu-Cell is virtual small as first Area Cell-1 or the second virtual subdistrict Cell-2 continue to merge, until the first virtual subdistrict Cell-1 and the second virtual subdistrict Merging condition is unsatisfactory between Cell-2.
Preferably, the first virtual subdistrict Cell-1 and the second virtual subdistrict of merging condition will be met in overlapping region Cell-2 is merged into new virtual subdistrict Mu-Cell, including：
The first virtual subdistrict Cell-1 different in overlapping region is obtained to share from the second different virtual subdistrict Cell-2 RRH numbers；
To the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 share RRH numbers according to from Small sequence is arrived greatly to be ranked up；
According to the sequence of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 RRH numbers shared, by first Virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are merged into new virtual subdistrict Mu-Cell.
S1062, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, The same shared RRH is allocated according to RRH biasings link.
Preferably, RRH biasings link includes：
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is more than or equal to 1, and the 4th virtual subdistrict Cell-4 After removing the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the 4th virtual subdistrict Cell-4's The ratio of the antenna sum of UE is more than or equal to 1, when the summation of the RSRP values of third virtual subdistrict Cell-3 is virtual more than the 4th small The same shared RRH is incorporated into third virtual subdistrict Cell-3 by the summation of the RSRP values of area Cell-4；
Or
When the summation of the RSRP values of third virtual subdistrict Cell-3 is total less than the RSRP values of the 4th virtual subdistrict Cell-4 With the same shared RRH is incorporated into the 4th virtual subdistrict Cell-4.
Preferably, RRH biasings link includes：
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is more than or equal to 1, and the 4th virtual subdistrict Cell-4 After removing the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the 4th virtual subdistrict Cell-4's The ratio of the antenna sum of UE is less than 1, and the same shared RRH is incorporated into the 4th virtual subdistrict Cell-4；
Or
After determining that third virtual subdistrict Cell-3 removes the same shared RRH, the RRH's of third virtual subdistrict Cell-3 Antenna sum and the ratio of the antenna sum of the UE of third virtual subdistrict Cell-3 are less than 1, and the 4th virtual subdistrict Cell-4 is removed After removing the same shared RRH, the UE of the antenna sum and the 4th virtual subdistrict Cell-4 of the RRH of the 4th virtual subdistrict Cell-4 Antenna sum ratio be more than or equal to 1, the same shared RRH is incorporated into third virtual subdistrict Cell-3.
Preferably, RRH biasings link includes：
Obtain the RSRP values that UE is measured by silent RRH in third virtual subdistrict Cell-3；
The RSRP values that UE is measured by silent RRH in the 4th virtual subdistrict Cell-4 are obtained, wherein silent RRH packets It includes：The RRH not selected by third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 in overlapping region；
After when third virtual subdistrict, Cell-3 removes the same shared RRH, the day of the RRH of third virtual subdistrict Cell-3 The ratio of line sum and the antenna sum of the UE of third virtual subdistrict Cell-3 is less than the 1, the 4th virtual subdistrict Cell-4 and removes together After one shared RRH, the day of the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and the UE of the 4th virtual subdistrict Cell-4 The ratio of line sum is less than 1, and UE all in the Cell-3 of third virtual subdistrict passes through the total of the silent RRH RSRP values measured It, will when with more than or equal to UE all in the 4th virtual subdistrict Cell-4 by the summations of the silent RRH RSRP values measured The RRH of the maximum silence of reference value of RSRP values is incorporated into third virtual subdistrict Cell-3, and the same shared RRH is incorporated into 4th virtual subdistrict Cell-4；
Or
All UE are less than the 4th void by the summation of the silent RRH RSRP values measured in the Cell-3 of third virtual subdistrict It is when intending summations of the UE all in cell Cell-4 by the silent RRH RSRP values measured, the reference value of RSRP values is maximum Silent RRH be incorporated into the 4th virtual subdistrict Cell-4, the same shared RRH is incorporated into third virtual subdistrict Cell- 3。
S1072, according to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell- of overlapping region 4 carry out the optimization of the whole network UE rates.
The merging method of virtual subdistrict provided in an embodiment of the present invention, by dividing the overlapping region of virtual subdistrict, due to It may be simultaneously present multiple virtual subdistricts in overlapping region, and may be formed between virtual subdistrict and virtual subdistrict capable and experienced It disturbs, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region is merged into new Virtual subdistrict Mu-Cell；There may be exist between two virtual subdistricts due to being unsatisfactory for merging condition in overlapping region at this time The case where overlapping, it is therefore desirable to whether compare third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 with same total RRH, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, need by The RRH of overlapping is redistributed according to RRH biasings link；In order to by the speed of surfing the Internet for distributing the UE of virtual subdistrict improve to It is optimal；Therefore, it is also desirable to by optimizing to improve RRH and use to the virtual subdistrict after merging according to precoding algorithms The rate of signal transmission between family improves the user rate of the whole network, solve the virtual subdistrict that is overlapped in the prior art it Between will will produce strong jamming so that the problem of rate of the signal transmission between RRH and user reduces.
Scene four, the embodiment of the present invention provide a kind of merging method of virtual subdistrict, include as shown in Fig. 2-d：
S1013, the Reference Signal Received Power RSRP that UE is measured by the remote radio head RRH-1 in predeterminable area is obtained Value, wherein remote radio head RRH-1 are any one remote radio head RRH in predeterminable area.
S1023, the size for comparing RSRP values and RSRP threshold values.
S1033, when RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, be formed as UE service Virtual subdistrict Cell.
S1043, the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area is divided.
S1053, meet merging condition as the first virtual subdistrict Cell-1 in overlapping region and the second virtual subdistrict Cell-2 When, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region are merged into new Virtual subdistrict Mu-Cell.
S1063, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 do not have the same shared RRH When, the whole network UE is carried out to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of overlapping region according to precoding algorithms The optimization of rate.
Preferably, the third virtual subdistrict Cell-3 according to precoding algorithms to overlapping region and the 4th virtual subdistrict The optimization that Cell-4 carries out the whole network UE rates includes：
Obtain precoding direction vector Ws of the UE in the first multi-user virtual cell；
Obtain the initial value D0 of the power control factor of any one UE the first multi-user virtual cell Nei；
Obtain the shared channel matrix L of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell；
According to the shared channel matrix L of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell, The first calculation formula, the second calculation formula and third for constructing the diagonal vector maximization the whole network user rate of power calculate public affairs Formula；
The initial value D0 of power control factor is brought into and iteratively solves the initial of power control factor in third calculation formula Value D；
The initial value D of power control factor is brought into the second calculation formula, geometric programming solves Dq, wherein whenWhen, iteration stopping obtains diagonal matrix D=Dq；
It brings diagonal matrix D=Dq into first calculation formula, finds out the whole network maximum user rate；Wherein, first public affairs are calculated Formula includes：
Wherein, JK indicates the same of multi-user interference and the first multi-user virtual minizone in the first multi-user virtual minizone Frequency interferes, σk 2For the additive white Gaussian noise of user k；
Second calculation formula includes：
Wherein,
Third calculation formula includes：
gm,k'(D|Dq-1), q is the integer more than or equal to 1；
Wherein,For power control factor initial value；DqFor in iterative algorithm The current value of power control factor, Dq-1For the value at the preceding iteration moment of power control factor in iterative algorithm, R (Dq) it is work( Rate controlling elements DqUnder the total rate of user；ε is the error amount of default, judgement user rate convergence；Exist for user k Channel vector (including large scale channel vector and small scale channel vector) in multi-user virtual cell m；It is that user k is being mostly used Normalization precoding vectors in the m of family virtual subdistrict； For large scale channel vectors of the user k in multi-user virtual cell t.
The merging method of virtual subdistrict provided in an embodiment of the present invention, by dividing the overlapping region of virtual subdistrict, due to It may be simultaneously present multiple virtual subdistricts in overlapping region, and may be formed between virtual subdistrict and virtual subdistrict capable and experienced It disturbs, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 that merging condition is met in overlapping region is merged into new Virtual subdistrict Mu-Cell；There may be exist between two virtual subdistricts due to being unsatisfactory for merging condition in overlapping region at this time The case where overlapping, it is therefore desirable to whether compare third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 with same total RRH, when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 does not have the same shared RRH, explanation Situation non-overlapping between each virtual subdistrict in overlapping region improves to distribute the speed of surfing the Internet of UE of virtual subdistrict It is extremely optimal；Therefore, it is also desirable to by according to precoding algorithms to the virtual subdistrict after merging optimize to improve RRH with The rate of signal transmission between user improves the user rate of the whole network, solves the virtual subdistrict being overlapped in the prior art Between will will produce strong jamming so that the problem of rate of the signal transmission between RRH and user reduces.
Embodiment three, the embodiment of the present invention provide a kind of realization side of the merging method of virtual subdistrict in practical applications Formula includes as shown in Fig. 3-a, Fig. 3-b and Fig. 4-a- Fig. 4-e：
It is applied in super-intensive C-RAN it should be noted that embodiment three is intended to provide a kind of merging method of virtual subdistrict Under the conditions of downlink multiple antennas RRH (embodiment RRH uses 2 transmitting antennas, user's single antenna) is with frequency, solve unified Interference it will be converted into multi-user interference in virtual subdistrict between virtual subdistrict under the conditions of channeling, in conjunction with layered pre-encoding algorithm, The problem of promoting average user spectrum efficiency and the whole network user rate.
Step S1 forms the initial virtual cell of customer-centric according to RSRP threshold values.
It should be noted that step S1 is comprised the following steps in actual application：
Step S11, according to Reference Signal Received Power RSRP maximum principles, RSRP threshold values are set, selection is maximum with user RRH of the RSRP differences in threshold value forms the virtual subdistrict of customer-centric；
Step S12, be the virtual subdistrict of each customer-centric number, as depicted in fig. 4-a, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, V14, V15, initial virtual cell number are number of users 15；
Step S13, the silences of the RRH in virtual subdistrict are not selected by user in the whole network.
It illustrates：
As depicted in fig. 4-a, according to RSRP maximum principles, 15 users select successively closes on strong signal RRH formation with user Centered on virtual subdistrict, according to user's serial number virtual subdistrict number, i.e. user U1 formed virtual subdistrict VC1, by RRH-P3, RRH-P5, RRH-P6 service for it, other virtual subdistricts are as shown in the figure successively；It will finally not be selected into the RRH- of virtual subdistrict The processing of P1, RRH-P2, RRH-P7, RRH-P7, RRH-15 silence.
Step S2 counts overlapping RRH numbers between virtual subdistrict, descending sequence.
It should be noted that step S2 is comprised the following steps in actual application：
Step S21, the overlapping RRH numbers between virtual subdistrict two-by-two are counted；
Step S22 is sorted from big to small by overlapping region.
It illustrates：
As depicted in fig. 4-a, according to the small Division of initial virtual, the whole network can be divided into 5 overlapping regions, and overlapping region 1 includes VC1, VC2, VC3, Maximum overlap number are overlapped 3 between VC1 and VC2,；Folded region 2 includes VC4, VC5, and Maximum overlap number is It is 1；Overlapping region 3 includes VC6, VC7, VC8, VC9, VC10, and Maximum overlap number is overlapped 5 between VC7 and VC8；Overlapping Region 4 includes VC11, VC12, and Maximum overlap number is 2；Overlapping region 5 includes VC13, VC14, VC15, and Maximum overlap number exists Between VC14 and VC15, it is overlapped 3.
Step S3 merges virtual subdistrict according to the condition of merging.
It should be noted that step S3 is comprised the following steps in actual application：
Step S31 sorts as shown in Fig. 3-a according to the overlapping RRH numbers of step S22 differences overlapping region, each overlapping region Judge whether Maximum overlap number is more than 0 successively.If each overlapping region Maximum overlap number is equal to 0, all conditions that meet are indicated Merging is completed, and goes to step S4.
Step S32 judges there is Maximum overlap RRH numbers if there is overlapping region Maximum overlap number to be more than 0 as shown in Fig. 3-a Two virtual subdistricts user and whether exceed user's threshold value.If exceeding threshold value, it is unsatisfactory for merging condition, the Maximum overlap Number is set to 0, and goes to step S2, is resequenced.
Step S33, if two virtual subdistricts with Maximum overlap RRH numbers as shown in Fig. 3-a meet user's threshold value, according to ZF precoding antenna conditions judge two virtual subdistricts RRH and with user and antenna ratio whether be more than or equal to 1.If antenna ratio Less than 1, then it is unsatisfactory for merging condition, which sets to 0, and goes to step S2, rearrangement.
Step S34 after meeting merging condition as shown in Fig. 3-a, merges two virtual subdistricts, and virtual subdistrict sum subtracts 1, virtually Cell renumbers, and goes to step S2, recalculates virtual subdistrict overlapping number.
It illustrates：
As depicted in fig. 4-a, when multi-user threshold value V=3 is arranged in system, size sequence is overlapped according to the subregions step S2, Meet user's threshold value and antenna ratio condition between each overlapping region Maximum overlap virtual subdistrict, carries out first time merging, overlapping region 1 In, VC1 merges to form new VC1 with VC2, wherein including：U1,U2；RRH-P2,RRH-P3,RRH-P4,RRH-P5,RRH-P6；Weight In folded region 2, VC4 merges to form VC4 with VC5, wherein including：U4,U5；RRH-P9；In overlapping region 3, VC7 merges with VC8 New VC7 is formed, wherein including：U7,U8；RRH-P8,RRH-P10,RRH-P11,RRH-P12,RRH-P13；In overlapping region 4, VC11 merges to form new VC11 with VC12, wherein including：U11,U12；RRH-P17,RRH-P19,RRH-P20；Overlapping region 5 In, VC14 merges to form new VC14 with VC15, wherein including：U14,U15；RRH-P14,RRH-P16,RRH-P18；It is empty after merging Quasi- cell sum subtracts 1, renumbers VC1, VC2, VC3, VC4, VC5, VC6, VC7, VC8, VC9, VC110, amalgamation result is as schemed Shown in 4-b.
S2 is gone to step, again statistics overlapping RRH numbers, overlapping region 2 is 0 with 4 Maximum overlap number of overlapping region, in overlay region Domain 1,3,5 carries out second and merges, according to user's threshold value and antenna ratio condition, after second of merging, renumber to be formed VC1, VC2, VC3, VC4, VC5, VC6, VC7, amalgamation result is as shown in Fig. 4-c.
S2 is gone to step, statistics overlapping RRH numbers, 1,2,4,5 Maximum overlap number of overlapping region are 0 again as shown in Fig. 3-a, Overlapping region 3 carries out third time merging, and according to user's threshold value, VC3 has been unsatisfactory for merging condition, and VC4, VC5 meet user's threshold value It renumbers to form VC1, VC2, VC3, VC4, VC5, VC6, amalgamation result such as Fig. 4-c after third time merges with antenna ratio condition It is shown.So far, all overlapping regions all no longer meet merging condition, and all overlapping numbers are set to 0, and go to step S4.
Step S4, cycle compare whether two virtual subdistricts share the same RRH.
It should be noted that step S4 is comprised the following steps in actual application：
After the condition of step S3 merges, there may be the overlapping RRH for being unsatisfactory for condition merging between virtual subdistrict.Successively Cycle compares two virtual subdistricts, is recycled successively in cycle and compares whether two virtual subdistricts share the same RRH；If not same One RRH recycles next RRH and is compared to each other, until all RRH have been recycled in virtual subdistrict；If the same RRH, turn Link is biased to RRH.Compare completion when all virtual subdistricts recycle two-by-two, then the non-overlapping virtual subdistrict of multi-user, which divides, completes, Terminate entire program.
Step S5, if after overlapping RRH is disconnected, two virtual subdistricts all meet precoding antenna ratio, overlapping RRH awards Virtual subdistrict larger RSRP.
It should be noted that step S5 is comprised the following steps in actual application：
Overlapping RRH after merging to condition, if after two overlapping virtual cells are disconnected with Chong Die RRH, base station and use Family antenna ratio all meets ρ >=1, then is overlapped RRH and awards virtual subdistrict larger RSRP, and judgement is completed to return again to the next void of cycle Quasi- cell compares.
Step S6 is overlapped RRH if after overlapping RRH is disconnected, only there are one virtual subdistricts all to meet precoding antenna ratio It awards and is unsatisfactory for the virtual subdistrict of antenna ratio.
It should be noted that step S6 is comprised the following steps in actual application：
Overlapping RRH after merging to condition, if after two overlapping virtual cells are disconnected with Chong Die RRH, there are one RRH and the user antenna ratio of virtual subdistrict meet ρ >=1, then are overlapped RRH and award and be unsatisfactory for the virtual subdistrict of antenna ratio, have adjudicated Compare at the next virtual subdistrict of cycle is returned again to.
Step S7, if after overlapping RRH is disconnected, two virtual subdistricts are all unsatisfactory for precoding antenna ratio, are wherein one Silence RRH is added in a virtual subdistrict, and overlapping RRH awards, and the virtual subdistrict of silent RRH is not added.
It should be noted that step S7 is comprised the following steps in actual application：
Overlapping RRH after merging to condition, if after two overlapping virtual cells are disconnected with Chong Die RRH, two virtual RRH and the user antenna ratio of cell are all unsatisfactory for ρ >=1, then the maximum RRH selections additions of RSRP are chosen from silent RRH should Virtual subdistrict, overlapping RRH awards, and the virtual subdistrict of silent RRH is not added, and judgement is completed to return again to the next virtual subdistrict of cycle Compare.
It illustrates：
Condition amalgamation result is as shown in Fig. 4-d, and VC3 still has 4 to be unsatisfactory for the weight that condition merges with VC4 in overlapping region 3 Folded RRH, the comparison loop since RRH serial numbers, it is clear that after being disconnected with P10, two virtual subdistricts all meet antenna ratio, because This P10 awards virtual subdistrict VC3 larger RSRP, and successively, P11 awards virtual subdistrict VC3, and P12 awards virtual subdistrict VC4, P13 Award virtual subdistrict VC4, and biasing result is as shown in Fig. 4-e.
In order to enable solve the problems, such as that overlapping virtual inter-cell interference and share expenditure are big, after having merged virtual subdistrict, It needs to carry out cell as shown in Fig. 3-b using layered pre-encoding technology, include the following steps：
Step S8 calculates ZF precoding direction vectors W in virtual subdistrict.
It should be noted that step S8 is comprised the following steps in actual application：
It recycles each multi-user virtual cell, shares user data and complete in each virtual subdistrict between base station Channel state information H=SL includes the small scale channel matrix S of slowly varying large scale channel matrix L and rapid fading, virtually It is eliminated in virtual subdistrict and is interfered using ZF precodings in cell, therefore, user's precoding direction vectorWhen single data stream transmits, to represent j-th of user pre- in the m of virtual subdistrict for the jth row of vector W Encode direction vector Wj, the 2nd (i-1)~2i-1 rows represent the precoding direction vector W of i-th of RRH couples of j-th of useri,j。
Step S9 calculates power control factor initial value D0。
It should be noted that step S9 is comprised the following steps in actual application：
It is limited according to the transmission power of each RRH：WhereinIt indicates in the m of virtual subdistrict All UmA user, dm,jIndicate the power Diagonal Factor of j-th of user in the m of virtual subdistrict.Can solve power control because The initial value of son：
Step S10, iteration find out power control factor optimal solution D.
It should be noted that step S10 is comprised the following steps in actual application：
Large scale channel matrix L is shared according to RRH between virtual subdistrict, is formed and solves the diagonal vector maximization the whole network use of power The optimization problem of family rate：
Wherein,It is virtual small Co-channel interference between multi-user interference and virtual subdistrict in area；σk 2For the additive white Gaussian noise of user k.
WhenAccording to inequalityIt converts problem to：
Wherein,
According to initial D0, iterate to calculate gm,k'(D|Dq-1), q=1,2 ..., according to above formula two, geometric programming solves update Dq, whenIteration stopping, D=Dq。
Step S11 finds out the whole network maximum user rate, i.e. throughput of system according to known W and D.
It should be noted that step S11 is comprised the following steps in actual application：
By diagonal matrix D=DqIt brings above formula one into, solves the whole network user rate.So far, under multi-user virtual cell The whole network user rate optimization is completed.
The merging method of virtual subdistrict provided in an embodiment of the present invention, lead to obtain predeterminable area in formed centered on UE Default virtual subdistrict, due to may be simultaneously present multiple default virtual subdistricts by centered on UE in predeterminable area, at this time Strong jamming can be formed between default virtual subdistrict；Therefore, it is necessary to judge the first virtual subdistrict with the second virtual subdistrict with the presence or absence of weight Folded phenomenon needs to continue the first virtual subdistrict of differentiation and the when judging that the first virtual subdistrict is Chong Die with the second virtual subdistrict Whether two virtual subdistricts meet the condition of merging, and the first virtual subdistrict for meeting merging condition is merged with the second virtual subdistrict At multi-user virtual cell, to which the default virtual subdistrict of overlapping be merged so that between original default virtual subdistrict Strong jamming eliminate, by using layered pre-encoding algorithm to the virtual subdistrict after merging optimize to improve RRH with The rate of signal transmission between user improves the user rate of the whole network, to solve be overlapped in the prior art it is virtual Strong jamming will be will produce between cell so that the rate of the signal transmission between RRH and user reduces；Again due to the same RRH Multiple users may be serviced simultaneously, so as to cause the relatively low problem of the user rate of the whole network.
Example IV, the embodiment of the present invention provide a kind of merging device 10 of virtual subdistrict, include as shown in Figure 5：
Area division unit 101, for dividing the overlay region being made of at least two virtual subdistrict Cell in predeterminable area Domain；
Processing unit 102, for when area division unit 101 divide overlapping region in the first virtual subdistrict Cell-1 and When second virtual subdistrict Cell-2 meets merging condition, the first virtual subdistrict Cell-1 of merging condition will be met in overlapping region It is merged into new virtual subdistrict Mu-Cell with the second virtual subdistrict Cell-2.
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 are belonging respectively at least two virtual subdistrict One in Cell, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is different, the first virtual subdistrict Cell-1 At least 1 the first UE provides service, and the second virtual subdistrict Cell-2 is at least 1 the 2nd UE and provides service, and new is virtual small Area Mu-Cell is at least 1 the first UE provides service and at least 1 the 2nd UE provides service, and virtual subdistrict Cell is extremely Include a remote radio head RRH less.
The merging device of virtual subdistrict provided in an embodiment of the present invention divides the weight of virtual subdistrict by area division unit Folded region, due to may be simultaneously present multiple virtual subdistricts in overlapping region, and may between virtual subdistrict and virtual subdistrict Strong jamming can be formed, it is therefore desirable to the first virtual subdistrict Cell-1 of merging condition will be met in overlapping region through the processing unit Be merged into new virtual subdistrict Mu-Cell with the second virtual subdistrict Cell-2, to meet the virtual subdistrict of merging condition into Merging is gone so that the strong jamming between original virtual subdistrict is eliminated, and the speed of the signal transmission between RRH and user is improved Rate improves the user rate of the whole network, will will produce strong jamming between the virtual subdistrict being overlapped in the prior art to solve, So that the rate of the signal transmission between RRH and user reduces；Again since the same RRH may service multiple users simultaneously, from And the problem for causing the user rate of the whole network relatively low.
Embodiment five, the embodiment of the present invention provide a kind of merging device 10 of virtual subdistrict, include as shown in Figure 6：
Data capture unit 103 is believed for obtaining UE by the references measured of the remote radio head RRH-1 in predeterminable area Number power RSRP values are received, wherein remote radio head RRH-1 is any one remote radio head RRH in predeterminable area；
Processing unit 102, the size of RSRP values and RSRP threshold values for comparing the acquisition of data capture unit 101；
Area division unit 101 is used for when processing unit 102 determines RSRP values >=RSRP threshold values, by the first radio frequency It zooms out a RRH to repartition, is formed as the virtual subdistrict Cell of UE services.
Area division unit 101 is additionally operable to divide the overlay region being made of at least two virtual subdistrict Cell in predeterminable area Domain；
Processing unit 102 is additionally operable to as the first virtual subdistrict Cell-1 in the overlapping region that area division unit 101 divides When meeting merging condition with the second virtual subdistrict Cell-2, the first virtual subdistrict of merging condition will be met in overlapping region Cell-1 and the second virtual subdistrict Cell-2 are merged into new virtual subdistrict Mu-Cell.
Preferably, processing unit is specifically used for when the first virtual subdistrict Cell-1 and the second virtual subdistrict in overlapping region When Cell-2 is unsatisfactory for merging condition, it is same whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have A shared RRH；Wherein, third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong at least two virtual subdistrict One in Cell and new virtual subdistrict Mu-Cell, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 It is different.
Preferably, processing unit is specifically used for when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is discontented When foot merges condition, it is same shared whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have RRH, wherein third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong at least two virtual subdistrict Cell, Yi Jixin Virtual subdistrict Mu-Cell in one, and third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 are different.
Preferably,
Data capture unit is additionally operable to obtain RRH, Yi Ji that the third virtual subdistrict Cell-3 in overlapping region includes The RRH that four virtual subdistrict Cell-4 include；
Processing unit, the third virtual subdistrict Cell-3 RRH that include obtained specifically for correction data acquiring unit with Whether the RRH that the 4th virtual subdistrict Cell-4 includes has the same shared RRH；
Area division unit is specifically used for when processing unit comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict When Cell-4 has the same shared RRH, the same shared RRH is allocated according to RRH biasings link.
Preferably, processing unit does not have specifically for working as third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 It is virtual to the third virtual subdistrict Cell-3 of overlapping region and the 4th small according to precoding algorithms when having the same shared RRH Area Cell-4 carries out the optimization of the whole network UE rates.
Preferably, processing unit is specifically used for biasing link to same shared according to RRH when area division unit After RRH is allocated, according to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell- of overlapping region 4 carry out the optimization of the whole network UE rates.
The merging device of virtual subdistrict provided in an embodiment of the present invention divides the weight of virtual subdistrict by area division unit Folded region, due to may be simultaneously present multiple virtual subdistricts in overlapping region, and may between virtual subdistrict and virtual subdistrict Strong jamming can be formed, it is therefore desirable to the first virtual subdistrict Cell-1 of merging condition will be met in overlapping region through the processing unit Be merged into new virtual subdistrict Mu-Cell with the second virtual subdistrict Cell-2, to meet the virtual subdistrict of merging condition into Merging is gone so that the strong jamming between original virtual subdistrict is eliminated, and the speed of the signal transmission between RRH and user is improved Rate improves the user rate of the whole network, will will produce strong jamming between the virtual subdistrict being overlapped in the prior art to solve, So that the rate of the signal transmission between RRH and user reduces；Again since the same RRH may service multiple users simultaneously, from And the problem for causing the user rate of the whole network relatively low.
Embodiment six, the embodiment of the present invention provide a kind of network system, include as shown in Fig. 7-a and Fig. 7-b：UE, RRH, BBU, virtual subdistrict merging device, MME, SGW, PGW and IMS；The merging device of wherein virtual subdistrict belongs to BBU.
It should be noted that base station (the full name in English in actual application：Evolved Node B, referred to as：eNodeB) In baseband processing unit (full name in English：Building Base band Unit, referred to as：BBU) at least one is connected by optical fiber A remote radio head (full name in English：Remote Radio Head, referred to as：RRH), user equipment (full name in English：User Equipment, referred to as：UE) power (full name in English can be received come measuring reference signals by RRH：Received Signal Code Power, referred to as：RSRP) and on be sent to eNodeB, as eNodeB provide service foundation；Base station passes through network node (full name in English：Mobility Management Entity, referred to as：MME), gateway (full name in English：Serving GateWay, referred to as：SGW), public data network gateway (full name in English：Public Data Network GateWay, referred to as： ) and network protocol multi-media sub-system (full name in English PGW：Internet Protocol Multimedia Subsystem, Referred to as：IMS the data exchange of user) is realized.
In the prior art, the communication cell under eNodeB is made of multiple RRH, after UE enters the covering of communication cell, ENodeB can be serviced according to the RSRP values distribution RRH that UE is uploaded for UE；Since an eNodeB includes multiple communication cells, and lead to The region of MPS process is believed there may be overlapping, leads between communication cell that there are strong interference；Since the embodiment of the present invention carries The merging device of the virtual subdistrict of confession belongs to eNodeB, therefore can be by being that the RRH of UE services carries out weight under eNodeB New distribution so that the RSRP values that can be uploaded according to UE without boundary, eNodeB between original communication cell, distribution RRH are UE provide service, to improve the rate of the signal transmission between RRH and user, solve be overlapped in the prior art it is virtual Strong jamming will be will produce between cell so that the problem of rate of the signal transmission between RRH and user reduces.
Illustratively, as shown in Fig. 7-a, the RRH that eNodeB provides service for UE-1 distribution includes：RRH-1, RRH-2 with And RRH-3, eNodeB provide the RRH of service for UE-2 distribution and include：RRH-4, RRH-5 and RRH-6；RRH-1, RRH-2 with And RRH-3 forms the virtual subdistrict that service is provided for UE-1, RRH-4, RRH-5 and RRH-6 form provides clothes for UE-2 The virtual subdistrict of business；Due to provided for UE-1 service virtual subdistrict and for UE-2 provide service virtual subdistrict covering region There are overlappings, it is therefore desirable to be merged to two virtual subdistricts；At this point, the eNodeB as shown in Fig. 7-b can be reclassified as UE- 1 and UE-2 provides the RRH of service, virtual subdistrict after redistributing include RRH-1, RRH-2, RRH-3, RRH-4, RRH-5 with And RRH-6, and simultaneously service is provided for UE-1 and UE-2.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (24)

1. a kind of merging method of virtual subdistrict, which is characterized in that including：
Divide the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area；
When the first virtual subdistrict Cell-1 in the overlapping region and the second virtual subdistrict Cell-2 meet merging condition, by institute State the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 for meeting the merging condition in overlapping region It is merged into new virtual subdistrict Mu-Cell；
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is belonging respectively at least two institute One in the Cell of virtual subdistrict is stated, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is different, The first virtual subdistrict Cell-1 is at least 1 the first UE and provides service, and the second virtual subdistrict Cell-2 is at least 1 2nd UE provides service, and the new virtual subdistrict Mu-Cell provides service at least 1 the first UE and is at least 1 the 2nd UE provides service, and the virtual subdistrict Cell includes at least a remote radio head RRH.
2. the merging method of virtual subdistrict according to claim 1, which is characterized in that in the determination predeterminable area Before the overlapping region that virtual subdistrict Cell is formed described at least two, further include：
Obtain the Reference Signal Received Power RSRP values that UE is measured by the remote radio head RRH-1 in predeterminable area, wherein institute It is any one remote radio head RRH in the predeterminable area to state remote radio head RRH-1；
Compare the size of the RSRP values and RSRP threshold values；
When the RSRP values >=RSRP threshold values, the first remote radio head RRH is repartitioned, is formed as described The virtual subdistrict Cell of UE services.
3. the merging method of virtual subdistrict according to claim 1, which is characterized in that the merging condition, including：
The region of first virtual subdistrict Cell-1 covering and the region of the second virtual subdistrict Cell-2 coverings meet the The UE sums of one default merging condition, the UE sums of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 Meet the second default merging condition, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 meet third Default merging condition；
It is described that the first virtual subdistrict Cell-1 and described second that meet the merging condition in overlapping region is virtually small Area Cell-2 is merged into new virtual subdistrict Mu-Cell, including：
When the region of the first virtual subdistrict Cell-1 coverings and the region of the second virtual subdistrict Cell-2 coverings meet The UE of first preset condition, the UE sums of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is total Number meets the second default merging condition and deposits the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 and meets When the third presets merging condition, by the first virtual subdistrict Cell-1 in overlapping region and second virtual subdistrict Cell-2 is merged into new virtual subdistrict Mu-Cell.
4. the merging method of virtual subdistrict according to claim 3, which is characterized in that the first default merging condition packet It includes：
The RRH numbers that the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is shared are more than 0.
5. the merging method of virtual subdistrict according to claim 3, which is characterized in that the second default merging condition packet It includes：
The UE sums of first virtual subdistrict are less than or equal to the first pre-set user threshold value, and the UE of second virtual subdistrict is total Number is less than or equal to the second pre-set user threshold value.
6. the merging method of virtual subdistrict according to claim 3, which is characterized in that the third presets merging condition packet It includes：The ratio of the antenna sum of the antenna sum of the RRH of first virtual subdistrict and the UE of first virtual subdistrict is more than Equal to 1, and the ratio of the antenna sum of the antenna sum of the RRH of second virtual subdistrict and the UE of second virtual subdistrict More than or equal to 1.
7. the merging method of virtual subdistrict according to claim 4, which is characterized in that described to meet institute in overlapping region The the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 for stating merging condition are merged into new virtual subdistrict Mu-Cell, including：
Obtain the first virtual subdistrict Cell-1 different in the overlapping region and different second virtual subdistricts RRH numbers shared Cell-2；
The RRH numbers that the first virtual subdistrict Cell-1 in the overlapping region and the second virtual subdistrict Cell-2 is shared Mesh is ranked up according to sequence from big to small；
It, will according to the sequence of the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 RRH numbers shared The first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is merged into new virtual subdistrict Mu-Cell.
8. the merging method of virtual subdistrict according to claim 1, which is characterized in that the method further includes：
When the first virtual subdistrict Cell-1 in the overlapping region and the second virtual subdistrict Cell-2 are unsatisfactory for merging When condition, whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have the same shared RRH；Its In, the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong to virtual subdistrict Cell described in described at least two, And one in the new virtual subdistrict Mu-Cell, and the third virtual subdistrict Cell-3 and the described 4th is virtually small Area Cell-4 is different.
9. the merging method of virtual subdistrict according to claim 1, which is characterized in that described to meet institute in overlapping region The the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 for stating merging condition are merged into new virtual subdistrict After Mu-Cell, further include：
When third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 are unsatisfactory for merging condition, it is virtual to compare the third Whether cell Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, wherein the third is virtually small Area Cell-3 and the 4th virtual subdistrict Cell-4 belongs to virtual subdistrict Cell described in described at least two and described new virtual One in cell Mu-Cell, and the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
10. the merging method of virtual subdistrict according to claim 8 or claim 9, which is characterized in that the comparison third is empty Whether quasi- cell Cell-3 and the 4th virtual subdistrict Cell-4 there is the same shared RRH to include：
Obtain the RRH and the 4th virtual subdistrict that the third virtual subdistrict Cell-3 in the overlapping region includes The RRH that Cell-4 includes；
Whether compare RRH that RRH that the third virtual subdistrict Cell-3 includes and the 4th virtual subdistrict Cell-4 includes With the same shared RRH；
When the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, press The same shared RRH is allocated according to RRH biasings link.
11. the merging method of virtual subdistrict according to claim 10, which is characterized in that the RRH biases link and includes：
After the third virtual subdistrict Cell-3 removes the same shared RRH, the third virtual subdistrict Cell-3 RRH antenna sum and the third virtual subdistrict Cell-3 UE antenna sum ratio more than or equal to 1, and described the After four virtual subdistrict Cell-4 remove the same shared RRH, the antenna of the RRH of the 4th virtual subdistrict Cell-4 is total The ratio of number and the antenna sum of the UE of the 4th virtual subdistrict Cell-4 is more than or equal to 1, when the third virtual subdistrict The summation of RSRP value of the summation of the RSRP values of Cell-3 more than the 4th virtual subdistrict Cell-4, will be described same shared RRH be incorporated into the third virtual subdistrict Cell-3；
Or
When the summation of the RSRP values of the third virtual subdistrict Cell-3 is less than the RSRP values of the 4th virtual subdistrict Cell-4 Summation, the same shared RRH is incorporated into the 4th virtual subdistrict Cell-4.
12. the merging method of virtual subdistrict according to claim 10, which is characterized in that the RRH biases link and includes：
After the third virtual subdistrict Cell-3 removes the same shared RRH, the third virtual subdistrict Cell-3 RRH antenna sum and the third virtual subdistrict Cell-3 UE antenna sum ratio more than or equal to 1, and described the After four virtual subdistrict Cell-4 remove the same shared RRH, the antenna of the RRH of the 4th virtual subdistrict Cell-4 is total The ratio of number and the antenna sum of the UE of the 4th virtual subdistrict Cell-4 is less than 1, and the same shared RRH is merged To the 4th virtual subdistrict Cell-4；
Or
After determining that the third virtual subdistrict Cell-3 removes the same shared RRH, the third virtual subdistrict Cell- The antenna sum of 3 RRH and the ratio of the antenna sum of the UE of the third virtual subdistrict Cell-3 are less than the 1, and the described 4th After virtual subdistrict Cell-4 removes the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 It is more than or equal to 1 with the ratio of the antenna sum of the UE of the 4th virtual subdistrict Cell-4, the same shared RRH is closed And the extremely third virtual subdistrict Cell-3.
13. the merging method of virtual subdistrict according to claim 10, which is characterized in that the RRH biases link and includes：
Obtain the RSRP values that UE is measured by silent RRH in the third virtual subdistrict Cell-3；
The RSRP values that UE is measured by silent RRH in the 4th virtual subdistrict Cell-4 are obtained, wherein silent RRH packets It includes：It is not selected by the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 in the overlapping region RRH；
After the third virtual subdistrict Cell-3 removes the same shared RRH, the third virtual subdistrict Cell-3 The ratio of antenna sum of UE of antenna sum and the third virtual subdistrict Cell-3 of RRH be less than the 1, the described 4th virtually After cell Cell-4 removes the same shared RRH, the antenna sum of the RRH of the 4th virtual subdistrict Cell-4 and institute The ratio for stating the antenna sum of the UE of the 4th virtual subdistrict Cell-4 is less than 1, and owns in the third virtual subdistrict Cell-3 UE by the summation of the silent RRH RSRP values measured to be more than or equal to UE all in the 4th virtual subdistrict Cell-4 logical When crossing the summation for the RSRP values that silent RRH is measured, the RRH of the maximum silence of the reference value of the RSRP values is incorporated into described The same shared RRH is incorporated into the 4th virtual subdistrict Cell-4 by third virtual subdistrict Cell-3；
Or
All UE are less than described the by the summation of the silent RRH RSRP values measured in the third virtual subdistrict Cell-3 When all UE are by the summations of the silent RRH RSRP values measured in four virtual subdistrict Cell-4, by the ginseng of the RSRP values The RRH for examining the maximum silence of value is incorporated into the 4th virtual subdistrict Cell-4, and the same shared RRH is incorporated into institute State third virtual subdistrict Cell-3.
14. the merging method of virtual subdistrict according to claim 9, which is characterized in that the method further includes：
When the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 does not have the same shared RRH, According to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of the overlapping region Carry out the optimization of the whole network UE rates.
15. the merging method of virtual subdistrict according to claim 10, which is characterized in that the method further includes：
The third virtual subdistrict Cell-3 to the overlapping region and the 4th virtual subdistrict according to precoding algorithms Cell-4 carries out the optimization of the whole network UE rates.
16. the merging method of the virtual subdistrict according to claims 14 or 15, which is characterized in that described to be calculated according to precoding Method carries out the whole network UE speed to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of the overlapping region The optimization of rate includes：
Obtain precoding direction vector Ws of the UE in the first multi-user virtual cell；
Obtain the initial value D0 of the power control factor of any one UE the first multi-user virtual cell Nei；
Obtain the shared channel square of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell Battle array L；
According to the shared channel square of the RRH of the first multi-user virtual cell and the RRH of the second multi-user virtual cell Battle array L, the first calculation formula, the second calculation formula and third for constructing the diagonal vector maximization the whole network user rate of power calculate Formula；
The initial value D0 of the power control factor is brought into and iteratively solves power control factor in the third calculation formula Initial value D；
The initial value D of the power control factor is brought into second calculation formula, geometric programming solves Dq, wherein whenWhen, iteration stopping obtains diagonal matrix D=Dq；
It brings the diagonal matrix D=Dq into first calculation formula, finds out the whole network maximum user rate；Wherein, described One calculation formula includes：
Wherein, JK indicates multi-user interference and first multi-user virtual minizone in first multi-user virtual minizone Co-channel interference, σk 2For the additive white Gaussian noise of user k；
Second calculation formula includes：
Wherein,
The third calculation formula includes：
gm,k'(D|Dq-1), q is the integer more than or equal to 1；
Wherein,For power control factor initial value；DqFor work(in iterative algorithm The current value of rate controlling elements, Dq-1For the value at the preceding iteration moment of power control factor in iterative algorithm, R (Dq) it is power Controlling elements DqUnder the total rate of user；ε is the error amount of default, judgement user rate convergence；It is user k more Channel vector (including large scale channel vector and small scale channel vector) in the m of user virtual subdistrict；It is user k more Normalization precoding vectors in the m of user virtual subdistrict； For large scale channel vectors of the user k in multi-user virtual cell t.
17. a kind of merging device of virtual subdistrict, which is characterized in that including：
Area division unit, for dividing the overlapping region being made of at least two virtual subdistrict Cell in predeterminable area；
Processing unit, for as the first virtual subdistrict Cell-1 and the in the overlapping region that the area division unit divides When two virtual subdistrict Cell-2 meet merging condition, the described first virtual of the merging condition will be met in the overlapping region Cell Cell-1 and the second virtual subdistrict Cell-2 are merged into new virtual subdistrict Mu-Cell；
Wherein, the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is belonging respectively at least two institute One in the Cell of virtual subdistrict is stated, and the first virtual subdistrict Cell-1 and the second virtual subdistrict Cell-2 is different, The first virtual subdistrict Cell-1 is at least 1 the first UE and provides service, and the second virtual subdistrict Cell-2 is at least 1 2nd UE provides service, and the new virtual subdistrict Mu-Cell provides service at least 1 the first UE and is at least 1 the 2nd UE provides service, and the virtual subdistrict Cell includes at least a remote radio head RRH.
18. the merging device of virtual subdistrict according to claim 17, which is characterized in that described device further includes：Data Acquiring unit；
The data capture unit, the reference signal measured by the remote radio head RRH-1 in predeterminable area for obtaining UE Power RSRP values are received, wherein the remote radio head RRH-1 is any one remote radio head RRH in the predeterminable area；
The processing unit is specifically used for the big of the RSRP values and the RSRP threshold values that the data capture unit obtains It is small；
The area division unit, specifically for when the processing unit determines the RSRP values >=RSRP threshold values, The area division unit repartitions the first remote radio head RRH, is formed as the virtual subdistrict of the UE services Cell。
19. the merging device of virtual subdistrict according to claim 17, which is characterized in that the processing unit, it is specific to use It is unsatisfactory for merging item in as the first virtual subdistrict Cell-1 in the overlapping region and the second virtual subdistrict Cell-2 When part, whether comparison third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 have the same shared RRH；Wherein, The third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belong to virtual subdistrict Cell described in described at least two, with And one in the new virtual subdistrict Mu-Cell, and the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
20. the merging device of virtual subdistrict according to claim 17, which is characterized in that the processing unit, it is specific to use In when third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is unsatisfactory for merging condition, it is virtually small to compare the third Whether area Cell-3 and the 4th virtual subdistrict Cell-4 has the same shared RRH, wherein the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 belongs to virtual subdistrict Cell described in described at least two and described new virtual small One in area Mu-Cell, and the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 is different.
21. the merging device of the virtual subdistrict according to claim 19 or 20, which is characterized in that
The data capture unit, being additionally operable to obtain the third virtual subdistrict Cell-3 in the overlapping region includes The RRH that RRH and the 4th virtual subdistrict Cell-4 include；
The processing unit, the third virtual subdistrict Cell-3 specifically for comparing the data capture unit acquisition include RRH and the 4th virtual subdistrict Cell-4 RRH that includes whether there is the same shared RRH；
The area division unit is specifically used for comparing the third virtual subdistrict Cell-3 and described the when the processing unit When four virtual subdistrict Cell-4 have the same shared RRH, according to RRH bias link to the same shared RRH into Row distribution.
22. the merging device of virtual subdistrict according to claim 19, which is characterized in that the processing unit, it is specific to use In when the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 does not have the same shared RRH, press According to precoding algorithms to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of the overlapping region into The optimization of row the whole network UE rates.
23. the merging device of virtual subdistrict according to claim 21, which is characterized in that the processing unit, it is specific to use In when the area division unit according to RRH biasing link the same shared RRH is allocated after, according to precoding Algorithm carries out the whole network UE to the third virtual subdistrict Cell-3 and the 4th virtual subdistrict Cell-4 of the overlapping region The optimization of rate.
24. a kind of network system, which is characterized in that including：UE, RRH, BBU, virtual subdistrict merging device, MME, SGW, PGW And IMS；The merging device of the wherein described virtual subdistrict belongs to the BBU.
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